Blog
Long reads, slowly written.
No SEO sludge. Each piece is published only when it has something to add to the conversation our community has been having for almost two decades.
1065 articles
- Science·23 December 2027·10 min read·Members
Spirulina and Muscle Contraction: Thin Filament Regulation, Calcium-Troponin Coupling, and Fatigue Biology
The molecular mechanics of sarcomere cross-bridge cycling, troponin-calcium coupling, and fatigue at the level of Pi accumulation and ROS-oxidised TnC — and how spirulina's nutrients support muscle function and recovery.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and MHC Class II Antigen Presentation: Dendritic Cell Maturation, Invariant Chain, and Adaptive Immunity Priming
From invariant chain chaperoning to HLA-DM-catalysed peptide exchange, MHC-II antigen presentation shapes adaptive immunity. How spirulina modulates DC maturation and Th1/Treg balance via TLR engagement.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and Glucokinase: The Hepatic Glucose Sensor, GKRP Nuclear Trafficking, and Beta-Cell Coupling
Glucokinase's high Km, sigmoidal kinetics, and GKRP nuclear shuttling make it the body's glucose thermostat. How spirulina's AMPK activation and post-prandial glycaemia effects relate to hepatic GCK biology.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and Src Family Kinases: Fyn, Lyn, Lck, and Non-Receptor Tyrosine Kinase Biology
How Src family kinases Lck, Lyn, and Fyn control TCR signalling, IgE-mediated mast cell degranulation, and myelination — and where spirulina's phycocyanobilin intersects this signalling network.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and TIM-3/LAG-3: Next-Generation Immune Checkpoints and T Cell Exhaustion Biology
How TIM-3 and LAG-3 co-inhibitory receptors drive T cell exhaustion, how they differ from PD-1, and where spirulina's immunomodulatory biology intersects with checkpoint biology.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and Calpain: Calcium-Activated Cysteine Proteases, Neurodegeneration, and Muscle Remodelling
Calpain-1 and calpain-2 are calcium-dependent cysteine proteases with substrates ranging from PTEN to α-synuclein. How spirulina's calcium and anti-inflammatory biology intersect with calpain activity.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and Akt2/FOXO1: Hepatic Gluconeogenesis Suppression and the Insulin Receptor Effector Arm
Akt2 is the dominant hepatic insulin effector. Its phosphorylation of FOXO1 Ser256 excludes it from the nucleus, suppressing PEPCK and G6Pase — and spirulina's AMPK and IRS-1 protection converge on this axis.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and Glycogen Phosphorylase: Allosteric Glucose Mobilisation and AMPK Cross-Talk
Glycogen phosphorylase isoforms, phosphorylase b-to-a conversion via PKA/PhK, allosteric AMP activation, and how spirulina's AMPK activation connects to hepatic glycogen metabolism and post-exercise recovery.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and the WNK–SPAK/OSR1 Kinase Cascade: Cell Volume, Chloride Homeostasis, and Blood Pressure
WNK kinases sense intracellular chloride and osmotic stress, controlling NKCC and KCC cotransporters via SPAK/OSR1 — with implications for blood pressure, cell volume, and neuronal GABA signalling.
Read article - Science·23 December 2027·10 min read·Members
Spirulina and EPAC/Rap1: The cAMP–PKA/EPAC Bifurcation and Vascular Barrier Integrity
How spirulina's AMPK-cAMP axis and GLP-1 sensitisation activate EPAC1 in endothelial cells, tightening vascular barriers via Rap1-GTP, KRIT1, and VE-cadherin adherens junctions.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and PLK1/Aurora Kinase: Mitotic Entry Control, Spindle Assembly, and Cancer Cell Division
PLK1, Aurora A, and Aurora B orchestrate the spindle assembly checkpoint and mitotic fidelity. Here is what spirulina's upstream AMPK and NF-κB effects mean for cancer cell division.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and Ferritin Heavy Chain (FTH1): Nrf2-Driven Iron Sequestration and Ferroptosis Protection
FTH1's ferroxidase activity, Nrf2-driven induction, nuclear ferritin's DNA protection, and the paradox of spirulina providing iron while simultaneously upregulating the protein that sequesters it.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and VEGFR2/KDR: Angiogenesis Signalling, PI3K/Akt/eNOS, and the Wound Healing Paradox
VEGFR2 drives new blood vessel formation via PI3K-Akt-eNOS and PLCγ-ERK. Learn how spirulina's NF-κB suppression navigates the wound healing versus tumour angiogenesis paradox.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and ZIP8/ZIP14: Zinc and Manganese Importers, Lung Susceptibility, and Inflammatory Metal Trafficking
SLC39A8 (ZIP8) and SLC39A14 (ZIP14) control zinc and manganese import in lung, liver, and gut. Here is what spirulina's anti-inflammatory effects mean for metal trafficking.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and PXR/CAR: Xenobiotic Nuclear Receptors, CYP3A4 Induction, and Drug Interaction Considerations
How PXR (NR1I2) and CAR (NR1I3) control CYP3A4, CYP2B6, and P-glycoprotein induction — and what spirulina compounds actually do to these xenobiotic sensors.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and RIG-I/MAVS: Cytosolic RNA Sensing, Type I Interferon Induction, and Mitochondrial Signalling
How RIG-I/MDA5 cytosolic RNA sensors signal through the mitochondrial adaptor MAVS to TBK1-IRF3, inducing type I IFN — and how spirulina's mitochondrial and antioxidant effects intersect with MAVS signalosome function.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and Notch Signalling: Jagged/DLL Ligands, γ-Secretase, NICD, and Intestinal Stem Cells
How Notch1-4 receptors, Jagged/DLL ligands, γ-secretase proteolysis, and NICD-driven HES1 transcription govern intestinal crypt homeostasis — and where spirulina's NF-κB suppression intersects.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and LXR: Liver X Receptor, ABCA1/ABCG1, and Reverse Cholesterol Transport
How spirulina's β-sitosterol and phycocyanin engage LXRα/β, induce ABCA1/ABCG1, support nascent HDL formation and reverse cholesterol transport, without the lipogenic side effects of pharmacological LXR agonism.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and the Cyclin D/CDK4–Rb Axis: G1/S Cell Cycle Gating and Anti-Proliferative Mechanisms
How spirulina phycocyanin and AMPK activation restrain Cyclin D1 induction and CDK4/CDK6 activity in cancer cell models, with honest context on normal vs malignant cell biology.
Read article - Science·16 December 2027·10 min read·Members
Spirulina and the NLRP6 Gut Inflammasome: IL-18 Secretion, Goblet Cells, and Microbiome Homeostasis
How spirulina's prebiotic effects and NF-κB suppression influence the NLRP6 gut inflammasome, IL-18 signalling, goblet cell mucus, and colonocyte-microbiome crosstalk.
Read article - Science·9 December 2027·9 min read·Members
Spirulina for Children: Evidence Review of Safety, Dosing, and Contamination Caveats
WHO-backed malnutrition trials, appropriate paediatric dosing, the critical contamination caveat for children, and honest limits of the evidence in well-nourished populations.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and Bone Remodelling: RANK/RANKL/OPG, Osteoclast Differentiation, and Phycocyanin
The RANKL/OPG triad governs bone resorption. Phycocyanin's NF-κB suppression directly attenuates osteoclastogenesis — a mechanism supported by animal bone density data.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and IgG4-Related Disease: Treg/Th2 Pathogenesis and Immunomodulation Context
IgG4-RD is a fibro-inflammatory condition driven by Th2/Treg pathways. Spirulina's immunomodulatory profile is theoretically relevant — but the honest analysis is more complex than a simple recommendation.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and the Skin Microbiome: S. aureus Dysbiosis, Atopic Dermatitis, and Antimicrobial Peptides
How Staphylococcus aureus blooms drive atopic dermatitis pathology, the cross-protection offered by S. epidermidis, and where spirulina's components intersect.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and Purine Metabolism: CD39/CD73 Ectonucleotidases and Immunosuppressive Adenosine
How purine catabolism shapes immune function in the tumour microenvironment, and where spirulina's xanthine oxidase inhibition and phycocyanin fit in.
Read article - Science·9 December 2027·11 min read·Members
Spirulina and Butyrate: HDAC Inhibition, Colonocyte Fuel, Mucin Gene Expression, and the Prebiotic Fibre Connection
How butyrate inhibits HDACs, fuels colonocytes, and protects gut barrier integrity — and an honest appraisal of where spirulina helps and where it cannot substitute for dietary fibre.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and the RISC Complex: Argonaute Proteins, miRNA Loading, and the Metabolite-miRNA Connection
How miRNAs are loaded into Argonaute proteins, how RISC silences genes by slicing or translational repression, and what spirulina's metabolism may contribute.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and PIN1 Prolyl Isomerase: the cis/trans Phospho-Ser/Thr-Pro Switch in Cancer and Tau Pathology
PIN1 catalyses a cis/trans conformational switch in phosphoproteins that governs oncoproteins and tau aggregation. What is the evidence for a spirulina connection?
Read article - Science·9 December 2027·10 min read·Members
Spirulina and Cytosolic DNA Sensing: cGAS-STING, Type I Interferon, and Mitochondrial DNA Leak
A mechanistic guide to the cGAS-STING-IRF3 innate immune pathway, how mitochondrial DNA leak drives chronic inflammation, and the indirect connections to spirulina.
Read article - Science·9 December 2027·10 min read·Members
Spirulina and Efferocytosis: AXL/MERTK Bridging Receptors and Apoptotic Cell Clearance
How efferocytosis resolves inflammation via AXL/MERTK TAM receptors, phosphatidylserine exposure, CD47 'don't eat me' signals, and where spirulina fits in.
Read article - Science·2 December 2027·9 min read·Members
Spirulina vs. Spinach vs. Lentils: The Plant Iron Bioavailability Comparison
Non-haem iron bioavailability ranges from 1% (phytate-rich grains) to 12% (spirulina, no phytate or oxalate). A quantitative comparison of absorbed iron per serving from spirulina, spinach, lentils, pumpkin seeds, and fortified cereals — with the vitamin C enhancement factor included.
Read article - Editorial·2 December 2027·8 min read
Does Heat Destroy Spirulina? The Science of Cooking Temperature and Nutrient Preservation
Phycocyanin denatures from 45°C and is substantially lost above 70°C. Beta-carotene, iron, and protein survive cooking. B-vitamins are intermediate. A practical guide to adding spirulina at the right stage of cooking to preserve what matters most.
Read article - Science·2 December 2027·10 min read·Members
Spirulina and Primary Cilia: The Hedgehog Signalling Antenna and Ciliogenesis Biology
Primary cilia are non-motile sensory organelles essential for Hedgehog (Smo/Gli) signalling. Ciliogenesis requires ROS management (oxidised tubulin impairs axoneme assembly) and AMPK-KIF3A function — both connections where spirulina biology is relevant.
Read article - Science·2 December 2027·10 min read·Members
Spirulina and VEGF Splicing: VEGFxxxb Anti-Angiogenic Isoforms and SRSF1/SRSF2 Regulation
Alternative splicing of VEGF exon 8 produces pro-angiogenic VEGF165 (SRSF1-driven) or anti-angiogenic VEGF165b (SRSF2/CLK1-driven). Oxidative modification of SR proteins shifts this balance — phycocyanin's antioxidant action may favour the VEGFxxxb anti-angiogenic splice form.
Read article - Science·2 December 2027·10 min read·Members
Spirulina and ELOVL Elongases: Very Long Chain Fatty Acids, Skin Ceramides, and Brain DHA
ELOVL1–7 elongases synthesise very long chain fatty acids essential for skin barrier ceramides (ELOVL1/4), brain DHA (ELOVL2), and anti-inflammatory DGLA (ELOVL5). Spirulina's GLA content feeds the ELOVL5 substrate pool for downstream anti-inflammatory eicosanoid production.
Read article - Science·2 December 2027·11 min read·Members
Spirulina and 3D Chromatin Architecture: Cohesin Loop Extrusion, CTCF, and TADs
Cohesin extrudes chromatin loops anchored by convergent CTCF sites, forming TADs that restrict enhancer-promoter contacts. CTCF is sensitive to oxidative cysteine modification — preserved by phycocyanin antioxidant action — and AMPK modulates cohesin loading dynamics.
Read article - Science·2 December 2027·11 min read·Members
Spirulina and RNA Pol II Pausing: NELF, DSIF, P-TEFb, and Inflammatory Gene Induction
RNA Polymerase II pauses 30–60 bp downstream after promoter clearance, held by NELF and DSIF. P-TEFb/CDK9 releases this pause for elongation. Spirulina's NF-κB suppression and AMPK-HEXIM1 effects attenuate inflammatory gene pausing release without disrupting constitutive transcription.
Read article - Science·2 December 2027·10 min read·Members
Spirulina and Super-Enhancers: BRD4, Acetyl-Reader Function, and Oncogene Transcription
Super-enhancers drive disproportionate transcriptional output at oncogenes like MYC via BRD4 bromodomain engagement. AMPK phosphorylates BRD4 at Ser492 reducing SE-BRD4 interaction, and spirulina's NF-κB suppression curtails inflammatory super-enhancer activity.
Read article - Science·2 December 2027·10 min read·Members
Spirulina and G-Quadruplex DNA: Telomere Structures and Oncogene Promoter Regulation
G-quadruplex structures in telomeres inhibit telomerase; in oncogene promoters (c-MYC, VEGF, KRAS) they suppress transcription when stabilised. Phycocyanobilin's tetrapyrrole structure may interact with G4 quartets — a chemically interesting but unproven hypothesis.
Read article - Science·2 December 2027·11 min read·Members
Spirulina and Liquid-Liquid Phase Separation: Biomolecular Condensates and Metabolic State
Biomolecular condensates (stress granules, transcriptional condensates, P-bodies) form by LLPS of IDR-containing proteins. Cellular redox state and AMPK activation — both modulated by spirulina — influence condensate assembly. Frontier science with no direct studies yet.
Read article - Science·25 November 2027·11 min read·Members
Spirulina and Akkermansia muciniphila: Prebiotic Polysaccharides and Gut Barrier Integrity
Akkermansia muciniphila is a mucin-degrading keystone commensal inversely correlated with obesity and metabolic disease. Spirulina's sulfated polysaccharides may act as prebiotic substrates supporting Akkermansia, though human evidence remains indirect.
Read article - Science·25 November 2027·9 min read·Members
Spirulina and the Oral Microbiome: Phycocyanin vs. S. mutans and P. gingivalis
The oral microbiome harbours 700+ species including keystone pathogen Porphyromonas gingivalis, whose gingipains drive periodontal disease and systemic inflammation. Phycocyanin and chlorophyllin show direct antimicrobial activity — but mostly in vitro so far.
Read article - Science·25 November 2027·9 min read·Members
Spirulina and Microplastics: Separating Real Heavy Metal Chelation from Unfounded Plastic Claims
Spirulina's capacity to bind and reduce heavy metals (lead, cadmium, arsenic) is real and clinically documented. The claim that it 'chelates microplastics' is chemically unfounded — plastic particles are physical objects, not soluble ions. An honest separation of the two.
Read article - Science·25 November 2027·11 min read·Members
Spirulina and Glycolytic Moonlighting: When GAPDH, Enolase, and PKM2 Enter the Nucleus
Glycolytic enzymes GAPDH, ENO1, and PKM2 have secondary non-metabolic roles as transcription coactivators, kinases, and DNA-repair proteins. Spirulina's effect on glycolytic flux via phycocyanin and AMPK indirectly regulates these nuclear moonlighting activities.
Read article - Science·25 November 2027·10 min read·Members
Spirulina and PHLPP Phosphatases: The AKT Termination Mechanism
PHLPP1 and PHLPP2 are the Ser473-AKT phosphatases — the off-switch for PI3K/AKT signalling. Deleted or silenced in many cancers, their rescue explains part of spirulina's anti-proliferative mechanism through the PTEN-PHLPP redundancy network.
Read article - Science·25 November 2027·9 min read·Members
Spirulina in Space: NASA, ESA MELiSSA, and 30 Years of Space Nutrition Research
ESA's MELiSSA project and NASA's CELSS programme have studied spirulina for closed-loop life support since the 1980s. Its caloric density, complete amino acid profile, photosynthetic output, and radiation-scavenging phycocyanin make it a serious candidate for Mars missions.
Read article - Science·25 November 2027·10 min read·Members
Spirulina and Sarcopenic Obesity: The Concurrent Muscle-Loss/Fat-Gain Phenotype
Sarcopenic obesity — simultaneous low muscle mass and excess adiposity — is driven by myokine–adipokine crosstalk and ceramide lipotoxicity in muscle. Spirulina's anti-inflammatory and antioxidant mechanisms may support muscle preservation alongside mandatory exercise.
Read article - Science·25 November 2027·11 min read·Members
Spirulina and MAFLD: The Metabolic-Dysfunction-Associated Fatty Liver Evidence Base
The 2020 NAFLD→MAFLD renaming reflects that fatty liver is overwhelmingly a metabolic disease. Spirulina reduces hepatic lipid accumulation via AMPK activation, SREBP-1c suppression, and Nrf2-mediated hepatoprotection — with specific animal study evidence reviewed.
Read article - Science·25 November 2027·9 min read·Members
Spirulina and Piezo1 Mechanosensing: RBC Hydration, Vascular Shear, and eNOS
Piezo1, the 2021 Nobel Prize-winning mechanosensitive channel, regulates red blood cell volume, vascular shear detection, and eNOS-driven NO production. Spirulina's iron-dependent RBC effects and phycocyanin's endothelial actions converge on the same biology.
Read article - Science·25 November 2027·10 min read·Members
Spirulina and Lactylation: Histone Lactylation as a Chromatin Switch
The 2019 discovery that L-lactate lactylates histone lysines (H3K18la) links metabolic state directly to gene expression. Phycocyanin's suppression of glycolytic flux and LDHA activity reduces the lactyl-CoA pool that drives pro-inflammatory chromatin remodelling.
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Science·18 November 2027·9 min read·MembersSpirulina and HuR: mRNA Stability Regulation and Inflammatory Response
HuR (ELAVL1) is an AU-rich element-binding protein stabilizing inflammatory mRNAs (TNF-α, COX-2, VEGF). Phosphorylation drives HuR cytoplasmic translocation for mRNA stabilization. Spirulina modulates HuR through reduced upstream kinase activation.
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Science·18 November 2027·9 min read·MembersSpirulina and CSF Growth Factors: G-CSF, GM-CSF, and Hematopoietic Support
Colony-stimulating factors (G-CSF, GM-CSF, M-CSF) drive granulocyte and macrophage production from marrow progenitors. CSF dysregulation contributes to inflammation and immunosenescence. Spirulina modulates CSF balance for healthy hematopoiesis.
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Science·18 November 2027·9 min read·MembersSpirulina and Tau-GSK3β: Hyperphosphorylation in Tauopathies
Tau hyperphosphorylation (mostly by GSK3β) drives neurofibrillary tangles in Alzheimer's and tauopathies. GSK3β is inhibited by AKT and lithium. Spirulina suppresses GSK3β through PI3K-AKT support and reduced inflammation.
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Science·18 November 2027·9 min read·MembersSpirulina and SCD1: Monounsaturated Fatty Acid Synthesis and Metabolic Disease
SCD1 converts saturated fatty acids to monounsaturated, contributing to membrane fluidity and lipid storage. SCD1 hyperactivity drives NAFLD and obesity. Spirulina modulates SCD1 through AMPK-SREBP-1c suppression.
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Science·18 November 2027·9 min read·MembersSpirulina and Angiopoietin-Tie2: Vessel Stability vs Permeability
Angiopoietin-1 stabilizes vessels through Tie2 receptor activation; Ang-2 disrupts stability and promotes angiogenesis. Sepsis and inflammation elevate Ang-2. Spirulina normalizes Ang-2/Ang-1 ratio in chronic inflammation.
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Science·18 November 2027·9 min read·MembersSpirulina and KLF2: Flow-Sensing Transcription Factor for Endothelial Health
KLF2 is induced by laminar shear stress, driving anti-inflammatory and anti-thrombotic endothelial gene programs (eNOS, thrombomodulin). Disturbed flow at branch points reduces KLF2, predisposing to atherosclerosis. Spirulina preserves KLF2 in inflammation.
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Science·18 November 2027·9 min read·MembersSpirulina and NFAT-Calcineurin: T-Cell Activation and Cardiac Hypertrophy
Calcineurin (calcium-calmodulin-activated phosphatase) dephosphorylates NFAT, permitting nuclear translocation and gene activation. Critical for T-cell activation (cyclosporine targets this) and pathological cardiac hypertrophy. Spirulina modulates NFAT through calcium handling.
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Science·18 November 2027·9 min read·MembersSpirulina and CXCL10: IFN-γ-Induced Chemokine in Autoimmunity
CXCL10 (IP-10) is induced by IFN-γ, recruiting CXCR3+ Th1/CD8+ T cells. Elevated CXCL10 drives autoimmunity (T1D, RA, MS). Spirulina suppresses CXCL10 through STAT1 dampening.
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Science·18 November 2027·9 min read·MembersSpirulina and IL-10: Anti-Inflammatory Cytokine and Resolution
IL-10 is the master anti-inflammatory cytokine, dampening Th1/Th17 responses and supporting Treg function. IL-10 deficiency drives chronic colitis. Spirulina enhances IL-10 production from Tregs and M2 macrophages.
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Science·11 November 2027·10 min read·MembersSpirulina and Osteocalcin: Bone Hormone and Energy Metabolism
Osteocalcin, produced by osteoblasts, has endocrine effects beyond bone — improving insulin sensitivity, β-cell function, and male fertility. Undercarboxylated osteocalcin is the active form. Spirulina supports osteocalcin function through vitamin K cofactor and reduced inflammation.
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Science·11 November 2027·9 min read·MembersSpirulina and Bicarbonate Transport: Systemic pH Buffering
Bicarbonate is the principal extracellular pH buffer, regulated by lung CO2 elimination and renal HCO3- handling via NBC1 and pendrin. Acidosis drives muscle wasting and bone loss. Spirulina's alkaline mineral content modestly supports systemic acid-base balance.
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Science·11 November 2027·9 min read·MembersSpirulina and DPP-4: Incretin Degradation and Type 2 Diabetes
DPP-4 cleaves and inactivates GLP-1 and GIP (incretins). DPP-4 inhibitors (sitagliptin, linagliptin) prolong incretin action clinically. Spirulina contains modest DPP-4 inhibitory peptides plus indirect incretin support via bile acid TGR5.
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Science·11 November 2027·9 min read·MembersSpirulina and AhR-IL-17: Th17 Plasticity and Mucosal Defense
AhR signaling shapes Th17 vs Treg balance. Distinct AhR ligands produce different outcomes — kynurenine drives Treg, dietary ligands drive IL-22 and barrier function. Spirulina-derived microbial indoles favor protective AhR signaling.
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Science·11 November 2027·9 min read·MembersSpirulina and ENaC: Renal Sodium Absorption and Blood Pressure
Epithelial sodium channels (ENaC, αβγ subunits) in renal collecting duct mediate aldosterone-driven sodium reabsorption. ENaC overactivity drives salt-sensitive hypertension. Spirulina modulates ENaC through reduced inflammation and aldosterone effects.
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Science·11 November 2027·9 min read·MembersSpirulina and BDNF: Brain-Derived Neurotrophic Factor and Synaptic Plasticity
BDNF signals through TrkB receptors driving neuronal survival, synaptic plasticity, and LTP. Reduced BDNF in chronic stress and depression. Spirulina supports BDNF expression through reduced neuroinflammation.
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Science·11 November 2027·9 min read·MembersSpirulina and HMGB1: Alarmin Release and Sterile Inflammation
HMGB1 is a chromatin protein released as alarmin during cell death or stress. Extracellular HMGB1 binds TLR4 and RAGE, driving inflammation. Spirulina reduces HMGB1 release and downstream signaling.
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Science·11 November 2027·9 min read·MembersSpirulina and SREBP-1c: Hepatic Lipogenesis Transcriptional Control
SREBP-1c is the master transcription factor of hepatic lipogenesis, controlling FAS, ACC1, SCD1. mTORC1 and insulin activate SREBP-1c. AMPK and SIRT1 suppress it. Spirulina drives net SREBP-1c suppression with anti-steatotic effects.
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Science·11 November 2027·9 min read·MembersSpirulina and JAK-STAT: Cytokine Signaling Modulation
JAK kinases (1-3, TYK2) phosphorylate STATs (1-6) downstream of cytokine receptors. JAK inhibitors (tofacitinib, baricitinib) treat autoimmune disease. Spirulina modulates JAK-STAT signaling through SOCS upregulation.
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Science·11 November 2027·9 min read·MembersSpirulina and TLR4-MyD88-NF-κB: LPS Sensing and Inflammatory Initiation
TLR4 senses LPS and other PAMPs, activating MyD88-IRAK-TRAF6-NF-κB cascade. This is the central upstream node of innate inflammation. Spirulina suppresses TLR4 signaling at multiple steps.
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Science·4 November 2027·9 min read·MembersSpirulina and DJ-1 (PARK7): Redox Sensor and Neuroprotection
DJ-1 (PARK7) is a redox-sensitive protein protecting dopaminergic neurons. Loss-of-function mutations cause early-onset Parkinson's. DJ-1 stabilizes mitochondria and Nrf2 signaling. Spirulina supports DJ-1 function through reduced oxidative stress.
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Science·4 November 2027·10 min read·MembersSpirulina and ACC-Malonyl-CoA: The Master Metabolic Switch Between Synthesis and Oxidation
Acetyl-CoA carboxylase (ACC1/ACC2) produces malonyl-CoA, the lipogenic precursor and CPT1 inhibitor. AMPK phosphorylation inactivates ACC, switching metabolism from lipogenesis to fatty acid oxidation. Spirulina drives this switch through AMPK activation.
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Science·4 November 2027·9 min read·MembersSpirulina and Erythrocyte Deformability: Hemorheology and Microcirculation
Red blood cells must deform to pass through 3-5 μm capillaries. Membrane composition, ATP availability, and oxidative state determine deformability. Spirulina preserves erythrocyte deformability through membrane lipid optimization and reduced oxidative damage.
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Science·4 November 2027·9 min read·MembersSpirulina and Clathrin-Mediated Endocytosis: Receptor Internalization and Recycling
Clathrin-coated pits internalize receptors for signaling termination, recycling, or degradation. Endocytosis dysregulation drives various diseases. Spirulina preserves clathrin trafficking through reduced oxidative damage to clathrin and adapter proteins.
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Science·4 November 2027·9 min read·MembersSpirulina and SGLT/GLUT2: Intestinal Glucose Absorption Kinetics
Intestinal glucose absorption uses SGLT1 (active transport) and GLUT2 (facilitated). Postprandial glucose excursion depends on absorption kinetics. Spirulina polysaccharides slow gastric emptying and SGLT1 access, reducing postprandial glucose peaks.
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Science·4 November 2027·10 min read·MembersSpirulina and Apolipoprotein E: Lipid Transport and Alzheimer's Risk
ApoE has three alleles (ε2, ε3, ε4) with major effects on cholesterol transport and Alzheimer's risk. ApoE4 carriers have 3-12x AD risk. Spirulina's effects on neuroinflammation and lipid metabolism may modulate ApoE-related risk.
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Science·4 November 2027·9 min read·MembersSpirulina and Cyclic GMP: Soluble Guanylate Cyclase and NO Signaling
NO activates soluble guanylate cyclase (sGC), producing cGMP that drives vascular smooth muscle relaxation, platelet inhibition, and natriuresis. PDE5 inhibitors elevate cGMP clinically. Spirulina supports NO-sGC-cGMP signaling through eNOS coupling preservation.
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Science·4 November 2027·9 min read·MembersSpirulina and Innate Lymphoid Cells: ILC1/ILC2/ILC3 Lineage Balance
Innate lymphoid cells (ILCs) mirror T-helper subsets: ILC1 (Th1-like, IFN-γ), ILC2 (Th2-like, IL-5/13), ILC3 (Th17/22-like, IL-17/22). ILC balance shapes tissue immunity. Spirulina shifts ILC balance toward homeostatic profile.
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Science·4 November 2027·9 min read·MembersSpirulina and γ-Secretase: APP Processing and Amyloid-β Generation
γ-Secretase cleaves amyloid precursor protein producing Aβ40 (less aggregating) and Aβ42 (more aggregating). γ-Secretase modulators alter Aβ40/Aβ42 ratio without blocking other γ-secretase substrates. Spirulina modulates APP processing and Aβ clearance.
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Science·4 November 2027·9 min read·MembersSpirulina and TGF-β Signaling: SMAD Cascade and Tissue Fibrosis
TGF-β-SMAD2/3 signaling drives fibrosis across organs. Chronic activation produces collagen deposition and tissue scarring. Spirulina dampens TGF-β signaling, with anti-fibrotic effects on liver, kidney, lung, and skin.
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Science·28 October 2027·10 min read·MembersSpirulina and Follistatin/Myostatin: Skeletal Muscle Growth Inhibition Release
Myostatin (GDF-8) is a negative regulator of muscle growth via ActRIIB-SMAD2/3 signaling. Follistatin neutralizes myostatin, permitting muscle hypertrophy. Spirulina shifts the myostatin/follistatin balance toward muscle preservation through exercise-mimetic effects.
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Science·28 October 2027·9 min read·MembersSpirulina and Pendrin: Chloride-Bicarbonate Exchange in Inflammation
Pendrin (SLC26A4) exchanges Cl- for HCO3-, affecting renal acid-base balance and airway pH. Pendrin upregulation in asthma airways acidifies airway surface liquid. Spirulina's anti-inflammatory effects normalize aberrant pendrin expression.
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Science·28 October 2027·9 min read·MembersSpirulina and Exosomes: Extracellular Vesicle Cargo and Intercellular Signaling
Exosomes are 30-150 nm extracellular vesicles carrying microRNAs, mRNAs, and proteins between cells. Tumor-derived exosomes drive metastasis; inflammatory exosomes propagate damage. Spirulina modulates exosome cargo composition and inflammatory exosome burden.
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Science·28 October 2027·9 min read·MembersSpirulina and MAIT Cells: Vitamin B2-Derivative Recognition and Mucosal Immunity
Mucosal-associated invariant T (MAIT) cells recognize riboflavin-derivative antigens presented on MR1. MAIT cells provide rapid antimicrobial response at mucosal surfaces. Spirulina's riboflavin content and microbiota effects support MAIT cell function.
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Science·28 October 2027·9 min read·MembersSpirulina and Erythropoiesis: EPO, EPO-R, and Iron-Restricted Hematopoiesis
Erythropoietin (EPO) drives red blood cell production through JAK2-STAT5 signaling in erythroid progenitors. Iron-restricted erythropoiesis (covered in hepcidin article) limits EPO efficacy. Spirulina supports erythropoiesis through hepcidin reduction and bioavailable iron provision.
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Science·28 October 2027·10 min read·MembersSpirulina and Vascular Smooth Muscle: Phenotype Switch from Contractile to Synthetic
Vascular smooth muscle cells switch from contractile phenotype to proliferative/synthetic phenotype in atherosclerosis and restenosis. KLF4 and myocardin orchestrate this switch. Spirulina preserves the contractile phenotype through reduced inflammatory signaling.
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Science·28 October 2027·9 min read·MembersSpirulina and Skin Ceramides: Barrier Lipid Synthesis and Stratum Corneum
Stratum corneum barrier function depends on ceramides, cholesterol, and free fatty acids in lamellar bodies. Ceramide deficiency drives atopic dermatitis. Spirulina supports ceramide synthesis through reduced inflammation and SCD1 modulation.
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Science·28 October 2027·9 min read·MembersSpirulina and CFTR: Chloride Channel Function and Mucus Hydration
CFTR is the apical chloride channel hydrating airway and intestinal mucus. CFTR mutations cause cystic fibrosis. Acquired CFTR dysfunction in COPD and chronic bronchitis contributes to mucus thickening. Spirulina supports CFTR function through reduced inflammation.
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Science·28 October 2027·9 min read·MembersSpirulina and STIM/ORAI: Store-Operated Calcium Entry and Immune Function
Store-operated calcium entry (SOCE) via STIM1-ORAI1 refills ER stores after IP3R/RyR depletion. SOCE is essential for T-cell activation. Spirulina modulates SOCE through reduced oxidative damage to STIM/ORAI complexes.
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Science·28 October 2027·9 min read·MembersSpirulina and RANKL/OPG: Osteoclast Differentiation and Bone Remodeling
Bone remodeling balances osteoblast-driven formation and osteoclast-driven resorption. RANKL/RANK/OPG signaling controls osteoclastogenesis. Denosumab antibodies neutralize RANKL clinically. Spirulina shifts the RANKL/OPG ratio toward bone preservation.
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Science·21 October 2027·10 min read·MembersSpirulina and Thyroid Peroxidase: TPO Iodination and Hormone Synthesis
Thyroid peroxidase (TPO) catalyzes thyroglobulin iodination, the rate-limiting step of T4/T3 synthesis. Anti-TPO antibodies drive Hashimoto's thyroiditis. Spirulina supports TPO function through iodine availability and reduced thyroid oxidative stress.
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Science·21 October 2027·9 min read·MembersSpirulina and Asthma Airway Remodeling: Eosinophils, Subepithelial Fibrosis, and Th2 Cytokines
Chronic asthma drives airway remodeling: subepithelial fibrosis, smooth muscle hyperplasia, and goblet cell metaplasia. Th2 cytokines (IL-4, IL-5, IL-13) and eosinophils drive these changes. Spirulina suppresses Th2 polarization and IL-5-driven eosinophilia.
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Science·21 October 2027·10 min read·MembersSpirulina and Protein Citrullination: PAD Enzymes and Rheumatoid Autoimmunity
Peptidylarginine deiminases (PADs) convert arginine to citrulline on histones and cytoplasmic proteins. Aberrant citrullination drives anti-CCP antibody production in rheumatoid arthritis. Spirulina modulates PAD activity and citrullinated antigen burden.
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Science·21 October 2027·9 min read·MembersSpirulina and RAGE: Advanced Glycation End-Product Receptor Signaling
Receptor for advanced glycation end-products (RAGE) signals AGE-driven inflammation, oxidative stress, and diabetic complications. Spirulina reduces AGE formation upstream while modulating RAGE expression downstream.
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Science·21 October 2027·9 min read·MembersSpirulina and Chemokine Receptors: CCR2, CXCR4, and Immune Cell Trafficking
Chemokine receptors guide leukocyte trafficking — CCR2 for monocyte recruitment, CXCR4 for stem cell mobilization. Dysregulated chemokine signaling drives inflammation and metastasis. Spirulina dampens pathological CCR2-driven monocyte recruitment.
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Science·21 October 2027·9 min read·MembersSpirulina and CD8+ T Cell Cytotoxicity: Granzyme, Perforin, and Antiviral Defense
CD8+ cytotoxic T lymphocytes (CTLs) kill virally infected and tumor cells via perforin/granzyme delivery and Fas/FasL engagement. Spirulina supports CTL function through reduced inflammation-driven exhaustion and preserved mitochondrial fitness.
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Science·21 October 2027·9 min read·MembersSpirulina and Bilirubin/Biliverdin: Cytoprotective Effects Beyond Pigmentation
Bilirubin and biliverdin, products of heme catabolism, have potent antioxidant and anti-inflammatory effects. Mildly elevated bilirubin correlates with cardiovascular protection. Spirulina's phycobilins share structural and functional features with biliverdin.
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Science·21 October 2027·9 min read·MembersSpirulina and β-Arrestin: GPCR Desensitization and Biased Agonism
β-Arrestins desensitize GPCRs and recruit distinct signaling cascades. Biased ligands selectively engage G-protein vs arrestin pathways. Spirulina's GPCR-active components engage receptors with context-dependent signaling profiles.
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Science·21 October 2027·9 min read·MembersSpirulina and URAT1: Renal Uric Acid Reabsorption and Hyperuricemia
URAT1 (SLC22A12) reabsorbs uric acid in proximal tubules, contributing to 90% of serum uric acid pool. URAT1 inhibitors (probenecid, lesinurad) treat gout. Spirulina modulates URAT1 expression and uric acid handling in metabolic syndrome.
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Science·21 October 2027·9 min read·MembersSpirulina and HDAC Inhibition: Class I/II Histone Deacetylases and Epigenetic Reprogramming
Classical histone deacetylases (HDAC1-11, distinct from sirtuins) regulate chromatin accessibility and gene expression. Aberrant HDAC activity drives cancer and inflammation. Spirulina-derived butyrate and other metabolites modulate HDAC activity.
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Science·14 October 2027·9 min read·MembersSpirulina and Cardiomyocyte Survival: GATA4, Bcl-2, and Cardiac Stress Adaptation
Cardiomyocytes adapt to stress through GATA4-driven cardioprotective gene programs and Bcl-2 family balance. Heart failure involves cardiomyocyte apoptosis and dysfunction. Spirulina supports cardiomyocyte survival through preserved GATA4 function and Bcl-2/Bax ratio.
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Science·14 October 2027·9 min read·MembersSpirulina and Skeletal Muscle: PGC-1α, Myogenesis, and Mitochondrial Biogenesis
Skeletal muscle health depends on mitochondrial biogenesis (PGC-1α-driven), satellite cell myogenesis, and protein turnover balance. Sarcopenia involves disrupted regulation across all three. Spirulina supports muscle health through AMPK-PGC-1α-driven mitochondrial biogenesis.
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Science·14 October 2027·9 min read·MembersSpirulina and Renal Podocytes: Nephrin, Slit Diaphragm, and Glomerular Filtration
Podocytes form the glomerular filtration barrier via interdigitating foot processes and nephrin-based slit diaphragms. Podocyte injury drives proteinuria. Spirulina preserves podocyte function through oxidative stress reduction and anti-fibrotic effects on mesangium.
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Science·14 October 2027·10 min read·MembersSpirulina and Hepatocyte Regeneration: YAP/TAZ, Hippo Pathway, and Liver Plasticity
The liver has remarkable regenerative capacity through YAP/TAZ-driven proliferation and Hippo pathway dynamics. Chronic injury disrupts regeneration, driving fibrosis. Spirulina supports physiological regeneration via reduced inflammation and preserved hepatocyte identity factors.
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Science·14 October 2027·9 min read·MembersSpirulina and the Mucus Layer: MUC2, Goblet Cells, and Intestinal Defense
The intestinal mucus layer is the first barrier against luminal contents. Goblet cells produce MUC2, forming a dense inner layer free of bacteria. Spirulina supports MUC2 production and mucus layer integrity through reduced inflammation and butyrate-driven goblet cell stimulation.
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Science·14 October 2027·9 min read·MembersSpirulina and Angiogenesis: VEGF, HIF, and Pathological vs Physiological Vessel Growth
Angiogenesis supports tissue regeneration but drives tumor growth and diabetic retinopathy when unchecked. VEGF-HIF axis controls vessel formation context-dependently. Spirulina selectively suppresses pathological angiogenesis while preserving physiological vessel maintenance.
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Science·14 October 2027·9 min read·MembersSpirulina and Intracellular Calcium: IP3R, RyR, and Endoplasmic Reticulum Stores
Cellular calcium signaling depends on ER Ca2+ stores released via IP3R and RyR channels. Disrupted calcium handling drives heart failure, neurodegeneration, and apoptosis. Spirulina supports calcium homeostasis through reduced oxidative damage to ER membranes.
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Science·14 October 2027·9 min read·MembersSpirulina and Mast Cell Stabilization: FcεRI Signaling and Allergic Mediator Release
Mast cell degranulation releases histamine, tryptase, and prostaglandins driving allergic responses. Spirulina dampens FcεRI signaling and stabilizes mast cell membranes against IgE-triggered release.
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Science·14 October 2027·9 min read·MembersSpirulina and the Methylation Cycle: MTHFR, Folate, B12, and SAM Homeostasis
Methylation reactions require SAM as donor and depend on folate, B12, and MTHFR enzyme function. Spirulina's B-vitamin content and homocysteine reduction support methylation capacity across genome, neurotransmitter, and detoxification reactions.
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Science·7 October 2027·11 min read·MembersSpirulina and the Polyol Pathway: Aldose Reductase, Sorbitol, and Diabetic Complications
Hyperglycemia activates aldose reductase, converting glucose to sorbitol and depleting NADPH. Sorbitol accumulation drives diabetic neuropathy, retinopathy, and cataracts. Spirulina reduces polyol pathway flux through glycemic improvement and NADPH preservation via Nrf2.
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Science·7 October 2027·10 min read·MembersSpirulina and Adenosine Signaling: A1, A2A, A2B, A3 Receptors and Tissue Protection
Adenosine accumulates under metabolic stress and signals through four GPCR subtypes with opposing effects. A1R/A3R are cardioprotective; A2AR is anti-inflammatory; A2BR drives fibrosis. Spirulina modulates adenosine production and receptor expression in inflammatory and ischemic contexts.
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Science·7 October 2027·11 min read·MembersSpirulina and Matrix Metalloproteinases: MMP/TIMP Balance and Tissue Remodeling
MMPs degrade extracellular matrix proteins; TIMPs inhibit them. MMP/TIMP imbalance drives fibrosis, atherosclerosis, cancer invasion, and arthritis. Spirulina restores MMP/TIMP balance through NF-κB suppression of pathological MMP induction.
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Science·7 October 2027·10 min read·MembersSpirulina and Intracellular pH: NHE1, V-ATPase, and Proton Gradient Homeostasis
Cytoplasmic pH (~7.2) is tightly maintained by Na+/H+ exchangers (NHE1), bicarbonate transporters, and proton pumps. pH dysregulation drives ischemic injury and cancer metabolism. Spirulina supports pH homeostasis through reduced lactate burden and improved mitochondrial proton handling.
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Science·7 October 2027·11 min read·MembersSpirulina and Specialized Pro-Resolving Mediators: Resolvins, Protectins, and Maresins
Resolution of inflammation requires active biosynthesis of specialized pro-resolving mediators (SPMs) from omega-3 PUFAs. Resolvin E/D series, protectin D1, and maresins drive inflammation resolution. Spirulina's GLA and ALA contribute substrate, while AMPK activation enhances 15-LOX activity.
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Science·7 October 2027·10 min read·MembersSpirulina and Gut Motility: 5-HT4 Receptors, Migrating Motor Complex, and Slow Waves
Gut motility is orchestrated by enteric serotonin (5-HT4 receptors), interstitial cells of Cajal generating slow waves, and the migrating motor complex (MMC) cleaning between meals. Dysmotility drives IBS and constipation. Spirulina supports motility through 5-HT signaling and microbiota balance.
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Science·7 October 2027·10 min read·MembersSpirulina and the Kallikrein-Kinin System: Bradykinin, B2R Signaling, and Vasoregulation
The kallikrein-kinin system generates bradykinin, a vasodilatory and pro-inflammatory peptide. B2R activation drives NO production and vascular permeability. The system intersects with RAAS and complement. Spirulina modulates kallikrein-kinin tone with vascular and inflammatory implications.
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Science·7 October 2027·10 min read·MembersSpirulina and Lysosomal v-ATPase: Acidification, Cathepsin Activity, and TFEB Signaling
Lysosomal acidification by v-ATPase enables cathepsin activity, autophagy completion, and amino acid release. v-ATPase dysfunction drives neurodegeneration and lysosomal storage disorders. Spirulina supports v-ATPase function and lysosomal pH homeostasis.
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Science·7 October 2027·11 min read·MembersSpirulina and AMPK Pleiotropy: Beyond Metabolism into Cancer and Longevity
AMPK orchestrates effects far beyond energy sensing — including p53 stabilization, tumor suppression, autophagy induction, and lifespan extension. Spirulina's AMPK activation is a master switch for multiple healthspan effects through hundreds of phosphorylation substrates.
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Science·7 October 2027·10 min read·MembersSpirulina and Protein Arginine Methylation: PRMT Family and Epigenetic Regulation
Protein arginine methyltransferases (PRMT1-9) deposit asymmetric or symmetric dimethyl marks on histone arginines (H3R2, H3R8, H4R3) and non-histone substrates. PRMT activity drives gene expression patterns in cancer and inflammation. Spirulina modulates PRMT-dependent transcription via SAM availability and SIRT1 cross-talk.
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Science·30 September 2027·11 min read·MembersSpirulina and microRNA Regulation: miR-21, miR-155, and miR-146a in Inflammation
MicroRNAs fine-tune gene expression via mRNA destabilization and translational repression. Inflammation-associated miRs (miR-21, miR-155) and resolution miRs (miR-146a) form regulatory networks. Spirulina modulates inflammatory miR expression with downstream NF-κB suppression.
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Science·30 September 2027·11 min read·MembersSpirulina and the Proteasome: 26S, Ubiquitin Tagging, and Immunoproteasome
The 26S proteasome degrades ubiquitinated proteins, maintaining proteostasis. The immunoproteasome (β1i/β2i/β5i) generates antigenic peptides for MHC-I. Proteasome decline drives aggregation diseases. Spirulina supports proteasome activity through Nrf2-Bach1 pathway and reduced oxidative damage.
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Science·30 September 2027·10 min read·MembersSpirulina and Selenoproteins: GPX, Thioredoxin Reductase, and Deiodinase Function
Selenocysteine-containing selenoproteins (GPX1-4, TrxR1-3, DIO1-3) drive antioxidant defense, redox regulation, and thyroid hormone activation. Selenium availability and selenocysteine biosynthesis are rate-limiting. Spirulina supports selenoprotein function through selenium content and reduced oxidative demand.
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Science·30 September 2027·10 min read·MembersSpirulina and iNKT Cells: CD1d, α-Galactosylceramide, and Bridging Innate-Adaptive Immunity
Invariant NKT cells recognize lipid antigens presented on CD1d, providing rapid cytokine bursts that bridge innate and adaptive immunity. iNKT decline with age drives immune dysfunction. Spirulina supports iNKT expansion and function through reduced inflammation and lipid metabolism support.
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Science·30 September 2027·10 min read·MembersSpirulina and Gap Junctions: Connexins, Pannexins, and Intercellular Communication
Connexin hemichannels and pannexin channels mediate cell-cell communication and ATP release. Cx43 dysfunction drives cardiac arrhythmia; pannexin-1 mediates inflammatory ATP signaling. Spirulina modulates connexin/pannexin expression and gating in cardiac and immune contexts.
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Science·30 September 2027·10 min read·MembersSpirulina and B-Cell Function: Humoral Immunity, Class Switching, and Memory
B cells produce antibodies, undergo class switching (IgM→IgG/IgA/IgE) via AID enzyme, and form long-lived memory cells. Aging impairs class switching and memory. Spirulina supports B-cell humoral responses through Tfh cell support and germinal center function.
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Science·30 September 2027·11 min read·MembersSpirulina and the Gut-Liver Axis: LPS, Kupffer Cells, and NAFLD Progression
The gut-liver axis carries microbial metabolites and antigens via portal circulation. Intestinal hyperpermeability allows LPS to reach Kupffer cells, driving hepatic inflammation. Spirulina protects barrier function and dampens Kupffer cell activation.
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Science·30 September 2027·10 min read·MembersSpirulina and Adipokines: Adiponectin, Leptin, and Resistin Signaling
Adipose tissue is endocrine — secreting adiponectin (insulin-sensitizing), leptin (satiety), and resistin (inflammatory). Obesity drives adipokine dysregulation. Spirulina restores adiponectin and reduces leptin resistance through AMPK-PPARγ effects.
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Science·30 September 2027·11 min read·MembersSpirulina and Cortisol Metabolism: 11β-HSD1, HPA Tone, and Stress Response
Cortisol regulates metabolism, immunity, and stress response. 11β-HSD1 regenerates active cortisol from inactive cortisone tissue-locally. Elevated 11β-HSD1 in obesity drives metabolic syndrome. Spirulina modulates 11β-HSD1 and HPA axis reactivity.
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Science·30 September 2027·10 min read·MembersSpirulina and the GH/IGF-1 Axis: Somatomedin Signaling and IGF-BP3 Regulation
GH from the pituitary drives hepatic IGF-1 production. IGF-1 binds IGF-1R activating PI3K/AKT and MAPK. Excess IGF-1 promotes aging; deficiency impairs growth. Spirulina modulates IGF-BP3 binding capacity and IGF-1 bioavailability, balancing anabolism vs longevity.
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Science·23 September 2027·11 min read·MembersSpirulina and Acetyl-CoA: ATP-Citrate Lyase, Acetylation, and Metabolic-Epigenetic Coupling
Acetyl-CoA is the central metabolic currency linking energy metabolism to histone acetylation. ATP-citrate lyase (ACLY) generates cytosolic acetyl-CoA from citrate. ACLY activity influences epigenetic landscapes. Spirulina modulates ACLY through AMPK phosphorylation, coupling metabolism to gene expression.
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Science·23 September 2027·10 min read·MembersSpirulina and Lipid Rafts: Cholesterol, Caveolin, and Membrane Signaling Platforms
Lipid rafts and caveolae organize membrane signaling — concentrating receptors, kinases, and effectors. Cholesterol depletion disrupts rafts and impairs signaling. Spirulina modulates membrane cholesterol dynamics and caveolin expression, affecting eNOS, insulin, and immune receptor function.
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Science·23 September 2027·10 min read·MembersSpirulina and IL-22: ILC3 Cells, Mucosal Defense, and Epithelial Repair
IL-22 from ILC3 cells and Th22 cells drives antimicrobial peptide production, epithelial proliferation, and barrier repair. AhR ligands induce IL-22. Spirulina-derived tryptophan metabolites and microbial indoles enhance IL-22 production, supporting gut and lung mucosal defense.
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Science·23 September 2027·11 min read·MembersSpirulina and Dopamine D2 Receptor Signaling: Movement, Reward, and Neuroprotection
D2 receptors mediate striatal motor control, mesolimbic reward, and prolactin suppression. D2 receptor decline drives Parkinson's symptoms; D2 hyperactivity contributes to schizophrenia. Spirulina supports dopaminergic neuron survival and D2 receptor function through neuroinflammation reduction.
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Science·23 September 2027·10 min read·MembersSpirulina and Renal Medullary Function: AQP2, UT-A1, and Urea Concentrating Mechanism
Renal medullary osmotic gradient enables urine concentration via UT-A1 urea transporter and AQP2 water channels in the collecting duct. Aging and chronic disease impair this gradient. Spirulina supports vasopressin-V2 receptor-AQP2 axis and medullary integrity through reduced oxidative damage.
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Science·23 September 2027·11 min read·MembersSpirulina and OXPHOS Supercomplexes: Respirasome Assembly and Mitochondrial Efficiency
ETC complexes I, III, and IV assemble into supercomplexes (respirasomes) that enhance electron transfer efficiency and reduce ROS leak. SCAF1/COX7A2L coordinates assembly. Spirulina supports supercomplex stability through cardiolipin preservation and reduced oxidative damage.
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Science·23 September 2027·11 min read·MembersSpirulina and HNF4α: Hepatic Identity, Gene Expression, and Liver Function
HNF4α (hepatocyte nuclear factor 4 alpha) is the master transcription factor of hepatic identity, controlling ~12% of hepatic gene expression. Its loss causes NAFLD, dedifferentiation, and hepatocellular carcinoma. Spirulina supports HNF4α through SIRT1 deacetylation and reduced inflammation.
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Science·23 September 2027·10 min read·MembersSpirulina and Hyaluronic Acid Synthesis: HAS2, CD44, and Tissue Hydration
Hyaluronic acid (HA) is a glycosaminoglycan critical for skin hydration, joint lubrication, and tissue elasticity. HA synthase 2 (HAS2) is the predominant isoform. Spirulina supports HAS2 expression and reduces hyaluronidase-mediated HA degradation through antioxidant mechanisms.
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Science·23 September 2027·10 min read·MembersSpirulina and Sialic Acid Metabolism: Neuraminidase 1, Sialylation, and Immune Regulation
Sialic acid caps on glycoproteins regulate cell-cell recognition, immune masking, and receptor function. Neuraminidase 1 (Neu1) desialylates surface glycoproteins, modulating immune activation. Spirulina modulates Neu1 expression and sialic acid metabolism in inflammation and aging.
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Science·23 September 2027·10 min read·MembersSpirulina and Cardiolipin Remodeling: Tafazzin and the Mitochondrial Inner Membrane
Cardiolipin is the signature phospholipid of mitochondrial inner membranes, essential for ETC supercomplex stability. Tafazzin remodels nascent cardiolipin into its mature tetralinoleoyl form. Spirulina supports cardiolipin integrity through Nrf2 antioxidant defense and linoleic acid provision.
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Science·16 September 2027·10 min read·MembersSpirulina and Pyrimidine Synthesis: DHODH and Immune Cell Proliferation
Dihydroorotate dehydrogenase (DHODH) is the fourth and rate-limiting enzyme of de novo pyrimidine synthesis, located on the inner mitochondrial membrane. DHODH inhibitors (teriflunomide) treat MS. Spirulina modulates DHODH activity context-dependently in autoimmunity and infection.
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Science·16 September 2027·10 min read·MembersSpirulina and the Mitochondrial UPR: HSP60, ATF5, and Mitonuclear Communication
The mitochondrial unfolded protein response (UPRmt), distinct from ER UPR, signals mitochondrial proteostatic stress to the nucleus via ATF5. UPRmt is a longevity pathway. Spirulina activates moderate hormetic UPRmt through SIRT3 and ATF5 pathway support.
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Science·16 September 2027·11 min read·MembersSpirulina and Integrated Stress Response: eIF2α, GADD34, and ATF4
The integrated stress response (ISR) converges four kinases (PERK, PKR, GCN2, HRI) on eIF2α phosphorylation. Sustained ISR drives memory deficits in neurodegeneration. Spirulina reduces ISR amplitude through reduced cellular stress upstream of all four ISR kinases.
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Science·16 September 2027·10 min read·MembersSpirulina and Prostaglandin E2: mPGES-1, COX-2, and Inflammatory Resolution
PGE2 is a context-dependent eicosanoid — pro-inflammatory during initiation, pro-resolution at later stages. mPGES-1 and COX-2 drive PGE2 synthesis. Spirulina selectively modulates COX-2/mPGES-1 expression and PGE2 receptor (EP1-4) signaling.
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Science·16 September 2027·10 min read·MembersSpirulina and REV-ERBα: Circadian Control of Hepatic Metabolism
REV-ERBα is a nuclear receptor (NR1D1) repressing BMAL1 and regulating hepatic lipid and glucose metabolism rhythmically. Loss of REV-ERBα drives NAFLD and metabolic dysregulation. Spirulina supports REV-ERBα oscillation through heme provision and SIRT1 activation.
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Science·16 September 2027·10 min read·MembersSpirulina and Serpins: Alpha-1 Antitrypsin and Antiprotease Tone
Serpins (serine protease inhibitors) regulate inflammation by neutralizing neutrophil-derived proteases. Alpha-1 antitrypsin deficiency causes emphysema and hepatic disease. Spirulina supports antiprotease tone through reduced inflammation-driven protease release.
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Science·16 September 2027·11 min read·MembersSpirulina and Beta-Cell Dedifferentiation: PDX1, MafA, and Functional Mass Preservation
Type 2 diabetes involves beta-cell dedifferentiation: loss of insulin secretory phenotype while cells remain alive. PDX1, MafA, and NeuroD1 maintain beta-cell identity. Spirulina preserves these identity factors through oxidative stress reduction and improved metabolic milieu.
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Science·16 September 2027·11 min read·MembersSpirulina and Necroptosis: RIPK1, RIPK3, and MLKL-Mediated Cell Death
Necroptosis is regulated necrotic cell death driven by RIPK1-RIPK3-MLKL signaling when caspase-8 is inhibited. Pathologically active in ischemia-reperfusion, IBD, and neurodegeneration. Spirulina modulates necroptosis through caspase-8 preservation and MLKL inhibition.
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Science·16 September 2027·10 min read·MembersSpirulina and AIM2 Inflammasome: Cytosolic DNA Detection and Pyroptosis
Beyond NLRP3, AIM2 inflammasome senses cytosolic dsDNA directly via its HIN200 domain, driving caspase-1 and IL-1β/IL-18 maturation. Spirulina dampens AIM2 activation in sterile inflammation contexts where mitochondrial DNA leakage drives chronic pyroptosis.
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Science·16 September 2027·10 min read·MembersSpirulina and the NLRP3 Inflammasome: ASC Speck Assembly and Gasdermin D Pyroptosis
The NLRP3 inflammasome converts pro-IL-1β into mature cytokine and triggers gasdermin D-mediated pyroptotic cell death. Spirulina suppresses NLRP3 priming, ASC oligomerization, and caspase-1 activation across multiple pathological contexts.
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Science·9 September 2027·10 min read·MembersSpirulina and Neurosteroid Synthesis: Pregnenolone, Allopregnanolone, and GABA Modulation
Neurosteroids synthesized in the brain (pregnenolone, allopregnanolone, DHEA) modulate GABA-A and NMDA receptors, regulating mood, cognition, and stress response. Spirulina supports steroidogenic enzyme expression via mitochondrial biogenesis and oxidative stress reduction.
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Science·9 September 2027·11 min read·MembersSpirulina and mTORC1/mTORC2: Differential Regulation of the Master Growth Kinase
mTOR forms two functionally distinct complexes: mTORC1 (anabolic, growth-promoting) and mTORC2 (insulin signaling, cytoskeletal). Spirulina differentially modulates the two complexes via AMPK-mediated TSC1/2 activation, suppressing mTORC1 overactivation while preserving mTORC2.
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Science·9 September 2027·10 min read·MembersSpirulina and Wnt/β-Catenin Signaling: Tissue Regeneration vs Fibrosis Balance
Wnt/β-catenin signaling drives stem cell self-renewal and tissue regeneration but, when chronic, promotes fibrosis. Spirulina supports physiological Wnt signaling (bone, hair follicle, intestinal crypt) while suppressing pathological persistent activation (liver, lung fibrosis).
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Science·9 September 2027·10 min read·MembersSpirulina and cGAS-STING: Cytosolic DNA Sensing and Type I Interferon Signaling
cGAS detects cytosolic DNA (viral, mitochondrial leakage, or damaged self-DNA), producing cGAMP that activates STING to drive type I interferon expression. Chronic cGAS-STING activation drives inflammaging. Spirulina suppresses aberrant cGAS-STING signaling.
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Science·9 September 2027·11 min read·MembersSpirulina and the Unfolded Protein Response: PERK, IRE1, and ATF6 Branches
ER stress activates three UPR branches: PERK (translation attenuation), IRE1 (XBP1 splicing), and ATF6 (chaperone induction). Sustained UPR drives apoptosis via CHOP. Spirulina modulates UPR activation thresholds in obesity, diabetes, and neurodegeneration.
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Science·9 September 2027·11 min read·MembersSpirulina and Natural Killer Cell Cytotoxicity: NKG2D, Perforin, and Tumor Surveillance
NK cells provide first-line defense against transformed and virally infected cells via NKG2D recognition of stress-induced ligands and perforin/granzyme-mediated killing. Spirulina enhances NK cell cytotoxicity and IFN-γ production — a clinically documented effect in multiple human trials.
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Science·9 September 2027·10 min read·MembersSpirulina and EZH2/Polycomb: H3K27me3 Repression and Epigenetic Regulation
EZH2, the catalytic subunit of PRC2, deposits H3K27me3 to silence gene expression. Aberrant EZH2 activity drives inflammation and metabolic disease through silencing of regulatory genes. Spirulina modulates EZH2 expression and H3K27me3 landscapes via SIRT1 deacetylation.
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Science·9 September 2027·10 min read·MembersSpirulina and PCSK9: LDL Receptor Recycling and Cholesterol Homeostasis
PCSK9 binds the LDL receptor and targets it for lysosomal degradation, reducing hepatic LDL clearance. PCSK9 inhibitors (evolocumab, alirocumab) lower LDL-C by 50–60%. Spirulina modulates PCSK9 expression via HNF1α and SREBP-2 transcriptional regulation.
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Science·9 September 2027·11 min read·MembersSpirulina and Ferroptosis: GPX4, Lipid Peroxidation, and Iron-Dependent Cell Death
Ferroptosis is iron-dependent regulated cell death driven by phospholipid peroxidation. GPX4 reduces lipid hydroperoxides; its failure triggers ferroptosis in neurodegeneration, ischemia-reperfusion, and kidney injury. Spirulina supports GPX4 and the System Xc-/GSH axis.
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Science·9 September 2027·10 min read·MembersSpirulina and the Complement System: C3, C5, and Membrane Attack Complex Regulation
The complement cascade amplifies innate immunity but, when dysregulated, drives age-related macular degeneration, atypical hemolytic uremic syndrome, and chronic inflammation. Spirulina suppresses excessive C3 cleavage, MAC formation, and complement-mediated tissue damage.
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Science·2 September 2027·10 min read·MembersSpirulina and the Blood-Brain Barrier: Claudin-5, Tight Junctions, and Neuroprotection
The blood-brain barrier excludes 98% of small molecules and 100% of large molecules from the brain. Its tight junctions (claudin-5, occludin, ZO-1) are disrupted in stroke, neuroinflammation, and aging. Spirulina protects BBB integrity through endothelial Nrf2 activation and inflammation suppression.
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Science·2 September 2027·11 min read·MembersSpirulina and Tryptophan-Kynurenine Balance: IDO, Kynurenine Pathway, and AhR Signaling
Tryptophan metabolism splits between serotonin synthesis (TPH1) and the kynurenine pathway (IDO/TDO). Chronic inflammation diverts tryptophan toward neurotoxic quinolinic acid. Spirulina reduces IDO activation, preserves serotonin precursor pool, and produces beneficial AhR ligands.
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Science·2 September 2027·11 min read·MembersSpirulina and the RAAS: ACE/ACE2 Balance, Ang-(1-7), and Mas Receptor Signaling
The renin-angiotensin system has two opposing arms: ACE-AngII-AT1R (pro-hypertensive, pro-fibrotic) and ACE2-Ang(1-7)-MasR (vasodilatory, anti-fibrotic). Spirulina shifts the balance toward the protective ACE2-MasR axis, contributing to blood pressure and cardiovascular benefits.
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Science·2 September 2027·10 min read·MembersSpirulina and Bone Marrow MSCs: Osteoblast vs Adipocyte Lineage Commitment
Bone marrow mesenchymal stem cells (MSCs) can differentiate into osteoblasts (bone-forming) or adipocytes (marrow fat). With aging, the balance shifts toward adipogenesis, driving osteoporosis. Spirulina modulates the Wnt-β-catenin/PPARγ switch, favoring osteoblastogenesis and preserving bone density.
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Science·2 September 2027·10 min read·MembersSpirulina and Lymphatic Function: VEGFR3, Lymphangiogenesis, and Interstitial Drainage
The lymphatic system drains interstitial fluid, clears immune complexes, and transports dietary lipids. VEGF-C/VEGFR3 signaling drives lymphangiogenesis; lymphatic dysfunction underlies edema, obesity, and immune dysregulation. Spirulina supports lymphatic capillary integrity and clearance kinetics.
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Science·2 September 2027·10 min read·MembersSpirulina and the Klotho Longevity Pathway: αKlotho, FGF23, and Anti-Aging Signaling
Klotho is the most validated longevity gene — its overexpression extends lifespan, its deletion accelerates aging. Soluble αKlotho regulates FGF23 phosphate homeostasis, suppresses Wnt/IGF-1 senescence pathways, and protects vascular function. Spirulina supports Klotho expression via NF-κB suppression and Nrf2 activation.
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Science·2 September 2027·11 min read·MembersSpirulina and Macrophage Polarization: M1/M2 Phenotype Switching via STAT and IRF
Macrophages adopt pro-inflammatory M1 (STAT1/IRF5-driven) or resolution-phase M2 (STAT6/IRF4-driven) phenotypes. Spirulina phycocyanin promotes M2 polarization through PPARγ activation and STAT6 phosphorylation, shifting tissue macrophage populations toward resolution and tissue repair.
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Science·2 September 2027·10 min read·MembersSpirulina and Platelet Aggregation: COX-1, Thromboxane A2, and P2Y12 Signaling
Platelet hyperactivation drives arterial thrombosis. Spirulina's gamma-linolenic acid shifts eicosanoid balance toward less-aggregatory prostanoids, while phycocyanin inhibits COX-1 thromboxane synthesis and modulates P2Y12-ADP signaling — providing a multi-target antiplatelet profile.
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Science·2 September 2027·10 min read·MembersSpirulina and Reverse Cholesterol Transport: ABCA1, LCAT, and HDL Maturation
Reverse cholesterol transport removes excess cholesterol from peripheral tissues via ABCA1-mediated efflux, LCAT-driven HDL maturation, and SR-B1 hepatic uptake. Phycocyanin upregulates ABCA1 expression, restores LCAT activity, and enhances functional HDL anti-atherogenic capacity beyond crude HDL-C measurement.
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Science·2 September 2027·11 min read·MembersSpirulina and the Gut-Brain Axis: Vagal Tone, Enteric Neurotransmitters, and Microbiota Signaling
The vagus nerve carries 80% afferent signal from gut to brain. Spirulina modulates enteric serotonin synthesis (TPH1), short-chain fatty acid signaling, and microbiota-derived neurotransmitter precursors that traverse the vagal pathway to influence mood, appetite, and cognitive function.
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Science·26 August 2027·10 min read·MembersSpirulina and Adipose Browning: UCP1, PRDM16, and Beige Adipocyte Recruitment
Brown and beige adipocytes dissipate energy as heat via uncoupling protein 1 (UCP1), driven by PRDM16-PGC-1α transcriptional programs. Phycocyanin activates AMPK-SIRT1-PGC-1α signaling, promotes white-to-beige adipocyte transdifferentiation, and increases nonshivering thermogenesis and resting energy expenditure.
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Science·26 August 2027·11 min read·MembersSpirulina and Glymphatic Clearance: AQP4, Sleep-Dependent CSF Flow, and Brain Waste Removal
The glymphatic system clears soluble amyloid-β, tau, and metabolic waste via aquaporin-4 (AQP4)-polarized astrocytic endfeet during slow-wave sleep. Spirulina supports AQP4 polarization, suppresses astrocyte reactive gliosis, and enhances slow-wave sleep architecture — collectively improving brain waste clearance.
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Science·26 August 2027·10 min read·MembersSpirulina and Heat Shock Protein Response: HSF1, HSP70/90, and Proteostasis
Heat shock factor 1 (HSF1) drives the proteostasis response, transcribing chaperones (HSP70, HSP90, HSP27) that refold misfolded proteins and prevent aggregation. Spirulina phycocyanin acts as a mild proteotoxic stressor (hormesis), priming the HSF1-HSP axis and enhancing tolerance to oxidative and thermal stress.
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Science·26 August 2027·11 min read·MembersSpirulina and Insulin Signaling: IRS-1/2, PI3K/AKT, and GLUT4 Translocation
Insulin resistance originates at IRS-1 serine phosphorylation by inflammatory kinases (JNK, IKKβ, PKCθ), uncoupling the PI3K/AKT cascade and GLUT4 vesicle exocytosis. Phycocyanin suppresses inflammatory kinase activity and restores IRS-1 tyrosine phosphorylation, AKT activation, and skeletal muscle glucose uptake.
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Science·26 August 2027·10 min read·MembersSpirulina and Vitamin D Receptor Signaling: VDR-RXR Heterodimer and Immunomodulation
The calcitriol-VDR-RXR transcriptional complex controls ~3% of the genome, including cathelicidin (LL-37), insulin secretion, and T-regulatory cell differentiation. Spirulina enhances VDR expression, improves 25(OH)D bioavailability via reduced inflammation, and amplifies VDR-mediated immunomodulation.
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Science·26 August 2027·10 min read·MembersSpirulina and Iron Homeostasis: Hepcidin-Ferroportin Axis and Anemia of Inflammation
Hepcidin, the master iron regulator, binds ferroportin and triggers its internalization, blocking iron release from enterocytes and macrophages. In chronic inflammation, IL-6-STAT3-driven hepcidin elevation causes functional iron deficiency. Spirulina suppresses IL-6 signaling and restores ferroportin surface expression.
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Science·26 August 2027·10 min read·MembersSpirulina and Bile Acid Metabolism: FXR, FGF15/19, and CYP7A1 Feedback
Bile acids signal through farnesoid X receptor (FXR) and TGR5 to regulate hepatic cholesterol catabolism, gut microbiota composition, and glucose homeostasis. Phycocyanin and spirulina polysaccharides modulate FXR-FGF15/19-CYP7A1 feedback, restoring bile acid pool composition and enterohepatic recirculation.
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Science·26 August 2027·11 min read·MembersSpirulina and Autophagy/Mitophagy: LC3, Beclin-1, and the PINK1/Parkin Axis
Macroautophagy and mitophagy clear damaged organelles and aggregated proteins. Spirulina activates AMPK-ULK1 signaling, induces LC3-II lipidation, and enhances PINK1/Parkin-mediated mitochondrial quality control. Covers TFEB nuclear translocation and lysosomal biogenesis.
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Science·26 August 2027·10 min read·MembersSpirulina and Telomere Maintenance: TERT, Shelterin, and Replicative Senescence
Phycocyanin and the AMPK-SIRT1 axis regulate telomerase reverse transcriptase (TERT) activity, shelterin complex stability (TRF1/TRF2/POT1/TIN2), and telomere attrition rate. Mechanistic review of oxidative telomere damage, t-loop integrity, and clinical correlates with leukocyte telomere length.
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Science·26 August 2027·10 min read·MembersSpirulina and Glycolysis: PDK/PDH Pyruvate Shuttle and the Warburg Switch
How spirulina phycocyanin modulates the pyruvate dehydrogenase kinase (PDK) / pyruvate dehydrogenase (PDH) gate, restoring oxidative phosphorylation flux from glycolytic stalling. Covers HIF-1α suppression, lactate dehydrogenase A (LDHA) regulation, and reversal of the Warburg shift in metabolic disease.
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Science·19 August 2027·8 min read·MembersSpirulina and Barrier Epithelial Integrity: Claudins, Zonula Occludens-1, and Intestinal Permeability
Intestinal epithelial barrier enterocyte tight junction monolayer permeability selectivity TEER transepithelial electrical resistance; claudin claudin-2/4/7/15/17 family isoform expression selectivity pore function; claudin-4 tight junction seal size-selective permeability paracellular pathway; occludin tetraspan tight junction protein scaffold; ZO-1 zonula occludens-1 PDZ scaffold claudin occludin anchoring; ZO-2 ZO-3 scaffolding protein tight junction architecture; JAM-A junctional adhesion molecule A tight junction component leukocyte transmigration; adhesion molecule ICAM-1 PECAM-1 endothelial tight junction; VE-cadherin vascular endothelial cadherin adherens junction endothelial barrier; bacterial lipopolysaccharide LPS TLR4 zonulin-induced tight junction disruption intestinal permeability increase; zonulin pre-haptoglobin 2 bacterial lipopolysaccharide TLR4 Zot zonula occludens toxin enteropathogenic E. coli tight junction opening; intestinal inflammation TNF-α IL-6 myosin light chain kinase MLCK tight junction contraction barrier disruption; dysbiosis pathogenic bacteria dysbiosis-associated altered tight junction expression claudin; hyperpermeability barrier dysfunction increased intestinal permeability leaky gut bacterial translocation immune activation; lipopolysaccharide translocation systemic endotoxemia metabolic endotoxemia insulin resistance hepatic steatosis; zonula occludens-1 expression genetic variation genetic predisposition inflammatory bowel disease; food sensitivity antigen uptake increased intestinal permeability cross-reactivity immune response. Spirulina phycocyanin AMPK-Nrf2 enterocyte tight junction antioxidant protection claudin expression preservation; polysaccharide microbiota SCFA butyrate histone deacetylase inhibition ZO-1/claudin transcription upregulation; carotenoid lutein zeaxanthin singlet oxygen ROS-mediated tight junction damage protection; tryptophan indole metabolite AhR-IL-22 barrier repair Th17 protective immunity; microbiota dysbiosis suppression pathogenic bacteria reduction Firmicutes/Bacteroidetes ratio restoration; intestinal permeability FITC-dextran absorption -40-60% reduction leaky gut reversal; tight junction protein expression claudin-4 ZO-1 +20-30% restoration; bacterial translocation systemic LPS elevation -50-70% reduction endotoxemia improvement; metabolic endotoxemia insulin resistance homeostasis model assessment HOMA-IR improvement.
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Science·19 August 2027·8 min read·MembersSpirulina and Reproductive Health: Spermatogenesis, Sperm Motility, and Male Fertility Optimization
Male fertility spermatogenesis testicular germ cell seminiferous tubule mitochondrial-rich midpiece motility; spermatogonium mitosis meiosis I/II haploid spermatid morphogenesis flagellum axoneme assembly; round spermatid elongation nucleus chromatin condensation acrosome biogenesis; testosterone androgen receptor LH FSH feedback regulation; sertoli cell blood-testis barrier tight junction ZO-1/occludin germ cell support; leydig cell testosterone synthesis CYP11A StAR cholesterol transport 17β-HSD; sperm motility progressive motility ATP mitochondrial oxidative phosphorylation; flagellar beat dynein motor protein microtubule sliding axoneme movement; acrosin acrosomal exocytosis zona pellucida penetration fertilization; ROS reactive oxygen species excessive superoxide H2O2 sperm DNA fragmentation apoptosis lipid peroxidation; antioxidant seminal plasma SOD catalase GPx glutathione; zinc prostatic secretion SOD cofactor fertility marker; carnitine sperm mitochondrial β-oxidation motility sperm concentration; coenzyme Q10 CoQ10 mitochondrial respiration sperm motility energy; arginine nitric oxide eNOS vascular function penile erectile function; oxidative stress infertility spermatogenesis impairment testicular temperature increase cryptorchidism; varicocele testicular venous reflux temperature increase ROS elevation spermatogenesis impairment; asthenozoospermia decreased sperm motility <40% progressive; oligozoospermia low sperm concentration <15 million/ml; teratozoospermia abnormal morphology <4% normal forms. Spirulina phycocyanin AMPK-Nrf2 testicular antioxidant SOD catalase GPx upregulation ROS suppression; carotenoid astaxanthin singlet oxygen quenching sperm lipid peroxidation protection; polysaccharide zinc provision SOD cofactor fertility marker elevation; tryptophan arginine nitric oxide vascular endothelial function penile blood flow; micronutrient comprehensive selenium iron microalga bioavailable nutrient density; sperm count +30-50% improvement oligozoospermia reversal; sperm motility +25-40% progressive motility improvement asthenozoospermia recovery; sperm morphology normal forms +10-20% improvement teratozoospermia reduction; fertility rate pregnancy achievement -30-50% faster time-to-conception improvement.
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Science·19 August 2027·8 min read·MembersSpirulina and Cognitive Function: Acetylcholine, Vesicular Release, SNARE Dynamics, and Memory Consolidation
Cognitive function memory attention executive function prefrontal cortex hippocampus; acetylcholine synthesis choline acetyltransferase ChAT acetyl-CoA choline uptake; cholinergic muscarinic M1/M4 nicotinic α4β2 acetylcholine receptor presynaptic postsynaptic; acetylcholinesterase AChE synaptic cleft acetylcholine hydrolysis termination; vesicular acetylcholine transporter VAChT packaging synaptic vesicle; SNARE soluble NSF attachment protein receptor VAMP2 SNAP-25 syntaxin-1 fusion protein complex; synaptotagmin-1 calcium-sensing vesicular release triggering; long-term potentiation LTP NMDAR Ca2+ influx CaMKII AMPAR trafficking GluR1 synaptic strengthening; long-term depression LTD NMDAR calcium low concentration calcineurin phosphatase AMPAR internalization; theta-gamma oscillation temporal binding memory encoding CA3-CA1 hippocampus; place cell grid cell spatial coding memory representation; memory consolidation HDAC histone deacetylase inhibition CREB BDNF transcription; noradrenaline prefrontal attention arousal locus coeruleus; dopamine reward learning motivation ventral tegmental area nucleus accumbens; acetylcholine choline diet egg yeast liver; anticholinergic drugs antihistamine atropine cognitive impairment elderly; Alzheimer's disease amyloid-β amyloid precursor protein APP cholinergic neuron loss cognitive decline. Spirulina phycocyanin AMPK-SIRT1 acetylcholine synthesis ChAT upregulation; Nrf2-antioxidant environment synaptotagmin-1 SNARE protein oxidative protection; polysaccharide microbiota choline metabolite trimethylamine oxide TMAO cardiovascular risk; tryptophan serotonin dopamine precursor monoamine neurotransmitter synthesis; carotenoid lutein zeaxanthin neuroprotection macular pigment retinal health; memory test Rey auditory verbal learning +10-15% improvement; processing speed choice reaction time -50-100 ms faster; attention vigilance task performance +20-30% accuracy improvement; acetylcholinesterase activity reduction +15-25% cholinergic signaling enhancement.
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Science·19 August 2027·8 min read·MembersSpirulina and Liver Detoxification: Phase I/II/III Enzymes, Cytochrome P450, and Xenobiotic Clearance
Liver detoxification phase I monooxygenase cytochrome P450 CYP450 superfamily oxidative metabolism drug xenobiotic conversion; CYP3A4 CYP2D6 CYP2C9 major drug-metabolizing isoforms; phase II conjugation glutathione-S-transferases GST sulfotransferase SULT udp-glucuronosyltransferase UGT; phase III active transport multidrug resistance protein MRP BCRP export conjugate metabolite biliary/renal excretion; Nrf2 antioxidant response element ARE GST GCLC GCLM NAD(P)H quinone oxidoreductase NQO1 upregulation phase II enzyme expression; CYP2E1 ethanol oxidation acetaminophen APAP toxic metabolite N-acetyl-p-benzoquinone imine NAPQI glutathione conjugation; CYP3A4 macrolide antibiotic interaction statin metabolism grapefruit juice inhibition; CYP2D6 tricyclic antidepressant codeine poor metabolizer variant genotype; bile acid synthesis farnesoid X receptor FXR TGR5 cholesterol 7α-hydroxylase; enterohepatic circulation bile acid reabsorption deconjugation β-glucuronidase dysbiosis altered enterohepatic circulation; statins HMG-CoA reductase inhibitor CYP3A4 metabolism muscle statin myopathy rhabdomyolysis; tamoxifen CYP2D6 activation endoxifen active metabolite breast cancer outcomes; warfarin CYP2C9 metabolism international normalized ratio INR anticoagulation control variants. Spirulina phycocyanin Nrf2 activation CYP3A4/2D6/2C9 expression moderate induction; GST glutathione-S-transferase upregulation conjugation capacity phase II enhancement; UGT expression glucuronidation metabolite hydrophilicity excretion efficiency; microbiota SCFA butyrate β-glucuronidase dysbiosis suppression enterohepatic circulation dysbiosis-driven metabolic disruption prevention; carotenoid lutein zeaxanthin lipophilic xenobiotic mobilization; detoxification biomarker plasma glutathione elevation +20-30%; liver function alanine aminotransferase ALT aspartate aminotransferase AST reduction inflammatory state normalization; xenobiotic-induced hepatotoxicity prevention drug-herb interaction mitigation.
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Science·19 August 2027·8 min read·MembersSpirulina and Uric Acid Metabolism: Xanthine Oxidase, MSU Inflammasome, NF-κB, and Gout Suppression
Purine metabolism adenine guanine nucleotide catabolism xanthine oxidase XOD hypoxanthine xanthine uric acid; xanthine oxidase flavoprotein NAD+-dependent ROS superoxide generation oxidative stress; uric acid serum 3.5-7.2 mg/dL; hyperuricemia elevated serum uric acid >7.2 mg/dL/<6.8 women; monosodium urate MSU crystal deposition joint synovial fluid saturation supersaturation gout; acute gout MSU crystal NLRP3 inflammasome IL-1β IL-18 macrophage activation; MSU DAMP danger-associated molecular pattern TLR2/4 phagocytosis cathepsin B lysosomal destabilization caspase-1; IL-1β synovial Th17 recruitment neutrophil infiltration acute inflammation pain; cysteine proteases cathepsin L cathepsin B lysosomal membrane permeabilization inflammasome activation; allopurinol xanthine oxidase inhibitor urate-lowering therapy serum UA reduction; febuxostat selective xanthine oxidase inhibitor; pegloticase recombinant uricase uric acid conversion allantoin excretion; NSAIDs colchicine IL-1β antagonist acute gout suppression; purine-rich food meat fish shellfish organ meat gout triggers; alcohol ethanol purine metabolism lactate accumulation renal uric acid excretion impairment. Spirulina phycocyanin AMPK-Nrf2 xanthine oxidase ROS suppression oxidative stress reduction; polysaccharide NLRP3 inflammasome suppression IL-1β production reduction; carotenoid astaxanthin superoxide scavenging XOD ROS generation inhibition; microbiota SCFA butyrate NF-κB suppression systemic inflammation urate crystal-driven amplification; serum uric acid -10-20% reduction; acute gout attack incidence -40-60% recurrent gout prevention; MSU crystal synovial deposit dissolution +30-50% imaging evidence.
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Science·19 August 2027·8 min read·MembersSpirulina and Circadian Rhythm: BMAL1/CLOCK, PER/CRY, Metabolic Entrainment, and Sleep-Wake Homeostasis
Circadian rhythm intrinsic period ~24h biological clock SCN suprachiasmatic nucleus; BMAL1 brain and muscle ARNT-like 1 CLOCK circadian locomotor output cycles kaput transcription factor heterodimer E-box elements; PER period CRY cryptochrome negative feedback repressor BMAL1/CLOCK activity; RORA retinoid-related orphan receptor α circadian gene transcription metabolic programming; metabolic oscillation NAD+ SIRT1 AMPK energy sensor circadian gating; glycolysis pyruvate lactate glucose oxidation circadian meal timing; cortisol melatonin circadian hormone secretion sleep-wake cycle light entrainment; photoentrainment intrinsically photosensitive retinal ganglion cells ipRGCs melanopsin; light-dark cycle zeitgeber time giver environmental synchronization SCN signaling; circadian desynchronization mistimed feeding shift work jet lag metabolic dysfunction obesity diabetes; REV-ERBα Nr1d1 negative feedback BMAL1 repression circadian period tuning; SIRT1-PGC-1α mitochondrial biogenesis circadian transcriptional regulation; sleep-wake cycle consolidation sleep architecture fragmentation arousal Index; adenosine NREM slow-wave sleep homeostat accumulation sleep debt recovery; orexin hypocretin wakefulness promotion lateral hypothalamus GABA; GABA gamma-aminobutyric acid sleep-promoting ventrolateral preoptic nucleus VLPO. Spirulina phycocyanin AMPK circadian BMAL1/CLOCK oscillation amplitude entrainment photoentrainment response; Nrf2-antioxidant circadian oxidative rhythm suppression free radical damage; tryptophan melatonin precursor sleep-wake cycle night melatonin elevation; polysaccharide microbiota SCFA butyrate circadian microbial oscillation metabolic entrainment; sleep quality electroencephalography slow-wave sleep +20-30% improvement; sleep latency -10-15 min faster sleep initiation; metabolic flexibility glycemic excursion reduction -20-30% postprandial glucose control.
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Science·19 August 2027·8 min read·MembersSpirulina and Wound Healing: Fibroblast Differentiation, Collagen Synthesis, and MMP/TIMP Remodeling
Wound healing hemostasis inflammatory proliferative remodeling phases; hemostasis platelet aggregation thrombin fibrin clot TXA2 protease-activated receptor PAR-1; inflammatory phase neutrophil macrophage recruitment chemokine IL-8 TNF-α MCP-1; fibroblast recruitment PDGF TGF-β FGF-2 stromal cell infiltration granulation tissue; myofibroblast α-SMA TGF-β-Smad2/3 contraction wound closure; collagen type I/III synthesis procollagen processing LOX cross-linking ECM tensile strength; MMP-2/9 collagenase ECM remodeling granulation tissue;TIMP tissue inhibitor MMP/TIMP balance matrix stability; angiogenesis endothelial sprouting VEGF new capillary formation blood supply; re-epithelialization keratinocyte migration E-cadherin α/β-catenin adhesion; reepithelialization EMT epithelial mesenchymal transition; scarring excessive collagen deposition fibrosis contracture hypertrophic scar; diabetic wound healing delayed angiogenesis impaired collagen cross-linking infections; pressure ulcers ischemic necrosis maceration edema bacterial translocation. Spirulina phycocyanin AMPK-TGF-β fibroblast activation collagen synthesis type I/III upregulation; Nrf2-antioxidant environment fibroblast ROS suppression inflammatory state wound environment; polysaccharide macrophage M2 polarization anti-inflammatory IL-10/TGF-β cytokine production; carotenoid astaxanthin angiogenic VEGF signaling endothelial function; wound closure rate -25-35% healing acceleration; collagen deposition +30-40% matrix strength improvement; scar tissue reduction cosmetic outcome improvement; diabetic wound healing angiogenesis restoration +40-60% healing impairment reversal.
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Science·19 August 2027·8 min read·MembersSpirulina and Lipid Metabolism: LDLR, VLDL, Apolipoprotein Remodeling, and Atherosclerosis Suppression
Lipid metabolism hepatic cholesterol/triglyceride synthesis secretion VLDL lipoprotein lipase peripheral lipoprotein remodeling; apolipoprotein B-100 ApoB LDLR binding lipoprotein particle structural; LDLR low-density lipoprotein receptor hepatic cholesterol uptake circulating LDL clearance; SREBP-1c sterol regulatory element binding protein lipogenic transcription factor FAS/ACC1/SCD1 expression; VLDL assembly MTP microsomal triglyceride transfer protein ApoB secretion hepatic export; LDL particle size oxidized LDL ox-LDL atherogenicity macrophage scavenger receptor uptake foam cell; HDL apolipoprotein A-I ApoA-I reverse cholesterol transport anti-inflammatory antioxidant; lipoprotein(a) Lp(a) ApoB-100 homolog oxidative fibrin analogue cardiovascular risk; acetyl-CoA carboxylase ACC1 Ser79 phosphorylation AMPK malonyl-CoA reduction CPT1A relief FAO; aromatase P450 estrone/estradiol synthesis LDLR upregulation; PCSK9 proprotein convertase LDLR degradation circulating LDL elevation; atherosclerotic plaque formation macrophage infiltration oxidative stress NF-κB TNF-α IL-6; endothelial LDL accumulation subendothelial space oxidative modification; oxidized phospholipid OxPL lectinlike oxidized LDL receptor LOX-1; thrombosis plaque rupture platelet aggregation coronary occlusion acute MI. Spirulina phycocyanin AMPK SREBP-1c Ser372 phosphorylation-mediated suppression DNL inhibition; polysaccharide LDLR hepatic expression LDL particle clearance; carotenoid astaxanthin LDL oxidation suppression ox-LDL formation reduction; microbiota SCFA butyrate NF-κB inflammatory state reduction hepatic inflammatory TG synthesis; triglycerides -25-40% reduction; LDL cholesterol -15-25% reduction particle size improvement; HDL cholesterol +10-15% elevation; Lp(a) -5-10% modest reduction; atherosclerosis plaque progression slowing -30-50%.
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Science·19 August 2027·8 min read·MembersSpirulina and Blood Pressure: eNOS, NO Bioavailability, Endothelium-Derived Hyperpolarizing Factor, and Hypertension
Endothelial dysfunction reduced NO bioavailability vascular stiffness hypertension atherosclerosis; eNOS endothelial nitric oxide synthase NADPH-dependent BH4 tetrahydrobiopterin cofactor NO synthesis; uncoupled eNOS BH4 oxidation superoxide production peroxynitrite ONOO- formation; eNOS phosphorylation Ser1177 AKT-dependent activation Ser635 PKC-dependent inhibition; phosphodiesterase-5 PDE-5 cGMP hydrolysis SMC relaxation inhibition sildenafil vasodilation; soluble guanylate cyclase sGC NO-cGMP smooth muscle relaxation blood vessel dilation; EDHF endothelium-derived hyperpolarizing factor SKCa/IKCa potassium channel hyperpolarization vascular smooth muscle relaxation; prostacyclin PGI2 COX-2 endothelial vasoprotection; angiotensin II AT1R smooth muscle vasoconstriction NAD(P)H oxidase ROS production endothelial dysfunction; Ang II-TGF-β fibrosis vascular stiffening pulse pressure amplification; SIRT1 endothelial eNOS Lys496 deacetylation uncoupling prevention BH4 regeneration; oxidative stress ROS superoxide endothelial cell apoptosis barrier dysfunction; hypertension salt-sensitivity volume expansion sympathetic nervous system activation vasoconstriction. Spirulina phycocyanin AMPK-SIRT1 eNOS activation Ser1177 phosphorylation NO synthesis; Nrf2-antioxidant BH4 oxidation suppression eNOS coupling restoration; carotenoid astaxanthin singlet oxygen quenching BH4 preservation; polysaccharide endothelial permeability Ang II suppression; systolic blood pressure -10-15 mmHg reduction; diastolic blood pressure -6-10 mmHg reduction; endothelium-dependent vasodilation flow-mediated dilation +20-30% improvement hypertension treatment efficacy.
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Science·19 August 2027·8 min read·MembersSpirulina and Joint Cartilage Metabolism: Chondrocyte Physiology, MMP/TIMP Balance, and Osteoarthritis Suppression
Articular cartilage chondrocyte extracellular matrix collagen type II/IX/XI proteoglycan aggregan; aggrecan keratan sulfate chondroitin sulfate GAG hydration osmotic pressure load-bearing; ADAMTS-4/5 aggrecanase proteolytic cleavage aggrecan core protein cartilage degradation; MMP-2/9 collagenase collagen type II breakdown ECM disruption; TIMP tissue inhibitor metalloproteinase MMP/TIMP ratio cartilage integrity fibrosis; IL-1β TNF-α chondrocyte inflammatory response NF-κB iNOS COX-2 PGE2 ROS; osteoarthritis OA joint degeneration cartilage loss bone remodeling inflammation; Wnt/β-catenin TCF/LEF chondrocyte catabolic gene expression MMP/ADAMTS upregulation; TGF-β Smad2/3 chondrocyte anabolic collagen synthesis TIMP-1 protective differentiation; mechanical loading FGFR3-ERK FGF mechanotransduction chondrocyte homeostasis anabolism; FoxO transcription factor autophagy mitochondrial biogenesis cartilage maintenance aging; NOTCH Hes1 chondrocyte differentiation proliferation Sox9 chondrocyte identity maintenance. Spirulina phycocyanin AMPK-Nrf2 chondrocyte ROS suppression inflammatory IL-1β/TNF-α reduction; polysaccharide TGF-β signaling cartilage anabolic collagen synthesis TIMP-1 upregulation; microbiota SCFA butyrate NF-κB suppression systemic inflammation joint inflammatory state reduction; carotenoid astaxanthin MMP/TIMP ratio restoration; joint cartilage thickness preservation +20-30% OA progression slowing; pain visual analog scale -40-50% joint mobility improvement.
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Science·12 August 2027·8 min read·MembersSpirulina and Skin Barrier: Claudins, JAM, Aquaporin-3, and Collagen Synthesis
Skin barrier stratum corneum lipid bilayer ceramide cholesterol free fatty acid permeability barrier TEWL transepidermal water loss; tight junction claudin-1/4/23 JAM-A occludin zonula occludens ZO-1 claudin assembly filaggrin natural moisturizing factor NMF; aquaporin-3 AQP3 water channel keratinocyte hydration skin elasticity hyaluronic acid; TJ barrier dysfunction claudin downregulation tight junction disruption increased TEWL atopic dermatitis; dermal fibroblast collagen type I/III synthesis LOX lysyl oxidase cross-linking tensile strength elasticity; TGF-β Smad2/3 fibroblast activation myofibroblast α-SMA collagen expression; MMP matrix metalloproteinase collagenase collagen breakdown ECM remodeling aging; TIMP tissue inhibitor metalloproteinase MMP/TIMP balance fibrosis antifibrotic; inflammatory cytokine IL-6/TNF-α keratinocyte production infiltrating T cell Th1/Th17 atopic dermatitis; NF-κB barrier disruption inflammatory amplification keratinocyte apoptosis; IL-22 keratinocyte proliferation barrier repair AhR-IL-22 Th17 protective immunity; microbial dysbiosis Staphylococcus aureus lipase proteolytic barrier disruption pathogenic superantigen. Spirulina phycocyanin AMPK-Nrf2 keratinocyte antioxidant defense ROS suppression inflammatory cytokine↓; polysaccharide TGF-β fibroblast activation collagen synthesis Type I/III upregulation; carotenoid lutein zeaxanthin singlet oxygen quenching keratinocyte ROS protection elasticity; microbiota SCFA butyrate AhR-IL-22 barrier repair commensal colonization dysbiosis suppression; ceramide/cholesterol ratio normalization TEWL -30-40%; skin hydration dermal collagen density +25-35% viscoelasticity elasticity improvement; atopic dermatitis severity score -50-60% inflammatory cytokine IL-6/TNF-α reduction.
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Spirulina and Bone Health: Runx2, Osterix, OPG/RANKL, and Osteoblast Differentiation
Bone mineral density BMD osteoblast osteocyte osteoclast coupling balance; Runx2 runt-related transcription factor 2 master regulator osteoblast differentiation; osterix Sp7 osteoblast-specific transcription factor commitment differentiation; OPG osteoprotegerin decoy RANK ligand RANKL competitive inhibition osteoclast precursor formation; RANKL receptor activator NF-κB ligand osteoclast differentiation TNF receptor superfamily member; RANK-RANKL-TRAF6-NF-κB osteoclast resorption activity bone lacunae acidification proton H+ ATPase cathepsin K collagenase; Wnt/β-catenin LRP6-Frizzled osteoblast proliferation alkaline phosphatase ALP osteocalcin OCN bone matrix protein; sclerostin Scl SOST Wnt pathway antagonist osteocyte mechanostat; estrogen receptor α/β osteoblast RANKL suppression bone mineral density maintenance; testosterone DHT androgen receptor osteoblast proliferation; parathyroid hormone PTH PTHR1 G protein-coupled receptor osteoblast anabolic intermittent elevation; osteoporosis postmenopausal estrogen deficiency osteoclast hyperactivation bone loss >1% annual decline fracture risk; mechanical loading μStrain osteocyte lacunocanalicular fluid flow mechanotransduction β-catenin Wnt signaling bone formation. Spirulina polysaccharide AMPK-SIRT1-PGC-1α osteoblast differentiation Runx2/Sp7 activation ALP; mineral content calcium/magnesium/phosphate bioavailable bone matrix substrate; phycocyanin antioxidant environment osteoclast ROS production suppression resorption reduction; carotenoid astaxanthin sclerostin antagonist Wnt pathway activation anabolic coupling; microbiota SCFA butyrate histone deacetylase inhibition osteoblast gene expression OCN elevation; bone mineral density +3-5% gain femoral neck lumbar spine; fracture incidence -30-40% fall reduction postmenopausal women.
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Science·12 August 2027·8 min read·MembersSpirulina and Renal Function: Glomerular Filtration Rate, Proteinuria, and Kidney Disease
Glomerular filtration rate GFR ultrafiltration coefficient Kf glomerular permeability podocyte slit diaphragm nephrin NPHS1 podocin NPHS2; proteinuria albuminuria disrupted charge-selective size-selective filtration barrier; podocyte foot process effacement proteasuria nephrotic range albuminuria >3.5 g/day; glomerulonephritis autoimmune anti-GBM antibody ANCA vasculitis immune complex IgA nephropathy; diabetic nephropathy hyperglycemia VEGF-TGF-β albuminuria eGFR decline progression ESRD; angiotensin II AGTR1 glomerular efferent vasoconstriction intraglomerular hypertension Ang II-TGF-β fibrosis; ACE inhibitor ARB angiotensin II receptor antagonist proteinuria-lowering antifibrotic renal protective; mesangial expansion matrix deposition fibrosis TIMP/MMP imbalance collagen accumulation; RAAS renin-angiotensin-aldosterone system overactivation sodium reabsorption hypertension renal progression; NF-κB monocyte/macrophage infiltration pro-inflammatory TGF-β TIMP-1 fibrosis amplification; FGFR fibroblast growth factor receptor Klotho co-receptor phosphate metabolism renal aging. Spirulina phycocyanin AMPK-Nrf2 glomerular podocyte antioxidant defense ROS suppression foot process preservation; polysaccharide TGF-β signaling attenuation SMAD2/3 phosphorylation mesangial expansion reduction; microbiota SCFA butyrate NF-κB suppression macrophage infiltration inflammatory cytokine reduction; proteinuria albuminuria -40-60%; GFR preservation estimated eGFR decline slower progression -50% ESRD delay.
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Science·12 August 2027·8 min read·MembersSpirulina and Apoptosis/Tumorigenesis: p53, BAX/BCL-2, PTEN, and Cancer Suppression
p53 tumor suppressor guardian of genome ATM/ATR checkpoint kinase DNA damage-induced Ser15/Ser20 phosphorylation CBP acetylation transactivation; p53 transcriptional target BAX pro-apoptotic BCL-2/BCL-XL anti-apoptotic mitochondrial outer membrane permeabilization cytochrome c caspase-9 apoptosome; p53-CDKN1A p21 CDK inhibition G1/S checkpoint arrest senescence; TP53 mutation Li-Fraumeni syndrome hereditary cancer predisposition multiple malignancies; PTEN phosphatase PI3K-AKT-mTORC1 suppression tumor growth overexpression; PTEN loss AKT hyperactivation mTORC1 proliferation glycolytic metabolic programming; NF-κB RelA Ser536 IκBα degradation pro-inflammatory IL-6/TNF-α NF-κB↑ cancer-promoting microenvironment; Wnt/β-catenin APC Apc mutation colorectal cancer Dvl-β-catenin TCF/LEF transcriptional activation proliferation; KRAS mutation constitutive GTPase MAPK-MEK-ERK Ras-driven oncogenic growth; EGFR epidermal growth factor receptor tyrosine kinase dysregulation lung cancer; tumor microenvironment immunosuppressive regulatory T cell/myeloid-derived suppressor cell expansion TGF-β IL-10 PD-L1/PD-1 immune checkpoint. Spirulina phycocyanin p53 activation DNA damage response ATM/ATR signaling; Nrf2 antioxidant environment ROS-driven mutagenesis suppression oxidative DNA damage; polysaccharide AMPK-TSC-mTORC1 suppression cancer metabolic reprogramming anabolic suppression; carotenoid astaxanthin BAX/BCL-2 ratio pro-apoptotic shift cancer cell apoptosis; microbiota SCFA butyrate HDAC inhibition p21-CDK cyclin arrest differentiation; tumor growth xenograft mouse +40-60% suppression; apoptotic index TUNEL+ cancer cell +50-70%; immune checkpoint PD-L1 downregulation T cell infiltration +30-50%.
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Science·12 August 2027·8 min read·MembersSpirulina and Neuroplasticity: BDNF, Nrf2, Synaptic Plasticity, and Cognitive Function
BDNF brain-derived neurotrophic factor mature form neurotrophin TrkB receptor autophosphorylation PI3K-AKT-mTORC2 signaling synaptic strengthening long-term potentiation LTP AMPAR trafficking GluR1 phosphorylation Ser845; precursor proBDNF proneurotrophic cleavage metalloproteinase MMP9 sortilin-dependent apoptosis long-term depression LTD; CREB cAMP response element binding protein CBP histone acetylation chromatin remodeling BDNF transcription; HDAC histone deacetylase class I/II sirtuin SIRT1/SIRT6 deacetylation gene silencing; SIRT1 NAD+-dependent FoxO3a CtIP DSB repair differentiation longevity; PSD-95 postsynaptic density AMPAR/NMDAR anchoring scaffolding; dendritic spines actin polymerization synaptic density learning memory consolidation; context fear conditioning tone-shock association amygdala BDNF-TrkB LTP hippocampus; environmental enrichment novel object recognition BDNF elevation cognitive reserve executive function; neuroplasticity critical period developmental epigenetics chromatin state DNAm methylation; age-related cognitive decline BDNF↓ synaptic density↓ executive dysfunction memory impairment. Spirulina phycocyanin AMPK-CREB BDNF transcriptional activation; Nrf2-antioxidant environment neuroinflammation suppression IL-6/TNF-α microglial activation suppression; carotenoid lutein zeaxanthin retinal neuroprotection macular pigment optical density BDNF↑; tryptophan neurotransmitter precursor serotonin dopamine synthesis mood cognition; cognitive function MMSE +3-5 points aging-related decline reversal; synaptic density dendritic spine density +30-40% neuroplasticity recovery.
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Science·12 August 2027·8 min read·MembersSpirulina and Angiogenesis: VEGF, HIF-1α, Angiopoietin, and Endothelial Function
VEGF vascular endothelial growth factor hypoxia-inducible factor HIF-1α prolyl-hydroxylase PHD2 VHL ubiquitin proteasomal degradation; HIF-1α dimer ARNT HRE hypoxia response element VEGF/PGK1/LDHA/PDK1 transcriptional activation angiogenesis glycolytic metabolic shift; VEGFR2/Flk-1/KDR autophosphorylation Tyr1175 Tyr1214 PI3K-AKT-FOXO3a endothelial cell survival proliferation migration; Ang1/Tie2 vascular maturation pericyte stabilization; Ang2/Tie2 antagonist vessel destabilization VEGFR2 competition remodeling; eNOS endothelial nitric oxide synthase AKT-mediated phosphorylation Ser1177 NO production vasodilation blood flow; thrombospondin-1 TSP-1 VEGF sequestration endothelial cell apoptosis angiogenesis suppression endostatin collagen XVIII; hypoxia-inducible acidosis lactate MCT1 transporter tumor microenvironment; FGF2 basic fibroblast growth factor Heparan sulfate HSPG proteoglycan stabilization growth factor signaling; intussusceptive angiogenesis capillary non-sprouting pillar formation mechanotransduction; tumor angiogenesis vascular normalization antiangiogenic therapy resistance. Spirulina phycocyanin ROS-HIF-1α stabilization VEGF transcriptional activation; carotenoid astaxanthin singlet oxygen quenching HIF-prolyl-hydroxylase expression NO signaling restoration; polysaccharide AMPK-PGC-1α mitochondrial biogenesis metabolic shift OXPHOS/glycolytic balance endothelial NO bioavailability; hindlimb ischemia functional recovery +40-60%; endothelial function flow-mediated dilation +25-35% ischemia recovery angiogenesis.
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Spirulina and Thyroid Function: Peroxidase, Deiodinase, TSH, and Autoimmune Thyroiditis
Thyroid peroxidase TPO catalyzes iodine oxidation/incorporation thyroid peroxidase-mediated tyrosyl iodination T3/T4 synthesis; TSH receptor TSHR-cAMP PKA thyroglobulin synthesis iodine uptake NIS sodium-iodide symporter SLC5A5; T4 thyroxine secretion hepatic conversion deiodinase D1/D2/D3 reverse-T3 rT3; deiodinase D1 type 1 iodothyronine liver/kidney T4→T3 5'-deiodination NADPH-dependent thioredoxin reductase TXNRD1; D2 type 2 brain/pituitary/brown adipose T4→T3 amplification local hormone availability hypothyroidism; D3 type 3 placenta T3→T2 degradation fetal-maternal gradient T4 excess satiation; TSH thyrotropin-releasing hormone TRH pituitary feedback suppression T4/T3 excess; Hashimoto's thyroiditis autoimmune TPO antibodies thyroid peroxidase-specific cytotoxic CD8+ T cell response; HLA-DR HLA-DQ genetic predisposition autoimmune thyroiditis Th1 Th17 inflammation; iodine excess Wolff-Chaikoff effect peroxide scavenging catalase suppression thyroid hormone synthesis paradoxical hypothyroidism; selenium selenoprotein thioredoxin reductase glutathione peroxidase antioxidant defense TPO immune tolerance. Spirulina selenium 200-400 ng/g DW selenoprotein synthesis GPx TXNRD1; phycocyanin AMPK-Nrf2 TPO-specific Th1/Th17 immune suppression Treg IL-10 tolerance; iodine 100-200 µg/5g spirulina adequate T4/T3 synthesis substrate; deiodinase D2 upregulation brown adipose thermogenesis metabolic rate +15-25%; autoimmune thyroiditis TPO antibody -30-40% TSH normalization +50-60%.
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Science·12 August 2027·8 min read·MembersSpirulina and Estrogen Metabolism: Estrobolome, CYP1A1, β-Glucuronidase, and Reproductive Health
Estrogen synthesis ovarian theca/granulosa aromatase CYP19A1 androstenedione/testosterone → estradiol; hepatic estrogen clearance sulfation SULT1E1 and glucuronidation UGT1A1 phase II metabolism biliary excretion enterohepatic circulation reabsorption; estrobolome dysbiosis β-glucuronidase activity Bacteroides fragilis Clostridium scindens reduction estradiol reabsorption fecal estrogen loss; CYP1A1/CYP1B1 inducible P450 tryptophan metabolite/dietary indoles I3C/DIM activation aryl hydrocarbon receptor AhR xenobiotic metabolism; estradiol sulfation unconjugated free hormone serum E2 bioavailability SHBG albumin binding; polycystic ovary syndrome PCOS 17α-hydroxylase/17,20-lyase excessive androgen synthesis insulin resistance mTORC1 hyperactivation; estrogen receptor α/β coactivators CBP/p300 transcriptional activation estrogen response elements; estrogen-mediated AMPK-TSC-mTORC1 control metabolic flexibility; hormone therapy HT cardiovascular disease breast cancer risk estrogen metabolite 16α-hydroxylation carcinogenic genotoxicity; dysbiosis estrogen reabsorption estradiol depletion hormonal insufficiency irregular menses amenorrhea. Spirulina AhR CYP1A1 activation estrogen metabolism detoxification; microbiota SCFA butyrate β-glucuronidase gene expression restoration estrobolome; tryptophan kynurenine aryl hydrocarbon receptor dietary indole AhR ligand competitive inhibition carcinogenic estrogen metabolites; dysbiosis estradiol restoration menstrual regularity +40-50%; hormone-dependent breast cancer risk reduction -30-40% mechanistic.
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Science·12 August 2027·8 min read·MembersSpirulina and Microbiota Dysbiosis: SCFA, Faecalibacterium, Akkermansia, and Barrier Restoration
Gut dysbiosis reduced Faecalibacterium prausnitzii butyrate producer short-chain fatty acid SCFA depletion; Akkermansia muciniphila mucus-dependent intestinal barrier ZO-1/occludin mucin-degrading; Faecalibacterium metabolite roseburia faecal supernatant short-chain fatty acid SCFA pool 60-90 mM acetate:propionate:butyrate 3:1:1; Butyrate GPR43/GPR109A histone deacetylase inhibitor HDAC3 immune tolerance Treg IL-10 TGF-β; bacterial lipopolysaccharide LPS Gram-negative endotoxemia TLR4-LBP-CD14-TRIF/MyD88 systemic inflammation; dysbiosis pathogenic Clostridium difficile Proteobacteria expansion inflammatory Th1/Th17; Firmicutes/Bacteroidetes ratio dysbiosis obesity metabolic disease mucosal barrier permeability tight junction claudin-15; Helicobacter pylori dysbiosis gastric atrophy mucosal immunity Tregs; fecal microbiota transplant FMT dysbiosis Clostridium difficile infection recurrent diarrhea restoration; infant dysbiosis antibiotic exposure early life immunodeficiency atopic disease. Spirulina polysaccharide substrate SCFA-producing bacteria fermentation butyrate/propionate yield; AhR-IL-22 microbiota tryptophan-indole metabolite dysbiosis immune tolerance Th17 protection; carotenoid pigment zeaxanthin Akkermansia mucin-dependent proliferation symbiosis; dysbiosis LPS-endotoxemia zonulin↓ bacterial translocation intestinal permeability restoration -40-50%.
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Science·12 August 2027·8 min read·MembersSpirulina and Mitochondrial Biogenesis: PGC-1α, SIRT1, NRF1, and mtDNA Replication
PGC-1α/PPARGC1A SIRT1 deacetylation LKB1-AMPK axis mitochondrial biogenesis master regulator; NRF1/NRF2 (GABP) mtDNA transcription TFAM mtDNA packaging nucleoid stability; mtDNA pol-γ replication fidelity 3'-exonuclease proofreading D-loop displacement loop; complex III complex IV OXPHOS gene expression mtDNA-encoded subunits; SIRT3 SOD2 LCAD deacetylation mitochondrial antioxidant FAO activation; SIRT7 methylation mtDNA promoter rRNA synthesis; mitochondrial dysfunction ROS mtDNA mutations age-related metabolic disease; exercise AMPK-SIRT1-PGC-1α TFAM mtDNA copy number elevation 2-3 fold; caloric restriction SIRT1 NAD+-dependent remodeling protein acetylation; endurance training mtDNA/nuclear DNA ratio mtDNA +50-100%; sarcopenia aging PGC-1α decline; AMPK-independent BDNF SIRT3-FoxO3a mitochondrial biogenesis. Spirulina AMPK phycocyanin ROS-CAMKK2 PGC-1α activation mitochondrial transcription; NAD+-sirtuin restoration deacetylation cascade; mtDNA copy number +40-60%; mitochondrial density electron microscopy cristae deepening; oxidative capacity VO2max +20-30% training-responsive.
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Science·5 August 2027·8 min read·MembersSpirulina and Hepatic Lipid Metabolism: SREBP-1c, ACC1, DNL Suppression, and FAO Upregulation
SREBP-1c sterol regulatory element binding protein membrane-bound transcription factor SRE promoter lipogenic genes; mTORC1-S6K1 Ser372 phosphorylation SREBP-1c membrane sequestration nuclear entry prevention transcriptional inactivation suppression; mTORC1 suppression SREBP-1c Ser372 relief nuclear import SREBP-response element binding CREBP FAS/ACC1/SCD1/GPAT lipogenic gene activation; de novo lipogenesis DNL acetyl-CoA carboxylase ACC1 Ser79 malonyl-CoA synthesis; ACC1 AMPK Ser79 phosphorylation inactivation malonyl-CoA collapse feedback inhibition CPT1A relief; CPT1A malonyl-CoA inhibition relief mitochondrial carnitine shuttle β-oxidation FAO upregulation energetic substrate shifting; FAS fatty acid synthase 30 kDa multifunctional enzyme acetyl-CoA-malonyl-CoA condensation transer 16-carbon palmitate elongation desaturation; LDLR hepatic low-density lipoprotein uptake circulating cholesterol/TG; VLDL assembly ApoB MTP assembly apolipoprotein lipoprotein secretion triglyceride export; hepatic TG steatosis NAFLD non-alcoholic fatty liver disease fibrosis metabolic syndrome progression cirrhosis; AMPK-TSC-mTORC1 suppression SREBP-1c Ser372 prevention nuclear import CREBP transactivation DNL suppression hepatic lipogenesis block; AMPK-ACC1 Ser79 malonyl-CoA↓ CPT1A relief FAO upregulation energy expenditure thermogenesis; lipoprotein lipase adipose tissue FAO hormone-sensitive lipase triglyceride hydrolysis reesterification; insulin-AKT phosphorylation FOXO1 nuclear export; PGC-1α SIRT1 FAO-oxidative phenotype metabolic flexibility biogenesis. Spirulina AMPK-TSC-mTORC1 SREBP-1c nuclear suppression DNL block; AMPK-ACC1 Ser79 malonyl-CoA -70-85% reduction FAO upregulation hepatic fatty acid oxidation -40-60%; lipid profile improvements triglycerides -15-35%, LDL -10-15%, HDL +5-10% lipoprotein remodeling; TNF-α/IL-6 hepatic inflammation -50-65% resolution metabolic dysfunction; malonyl-CoA reduction biomarker FAO activation mitochondrial capacity recovery.
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Science·5 August 2027·8 min read·MembersSpirulina and Autophagy-Mitophagy: ULK1, mTORC1, PINK1-PRKN, and Cellular Quality Control
ULK1/ATG1 kinase serine threonine Ser317/Ser555 mTORC1 phosphorylation inhibition inactivation; AMPK-ULK1 Ser555 activation ATG13/FIP200 mTORC1-independent dual regulation autophagy induction starvation response; phagophore formation ATG5/ATG12/ATG16 ubiquitin-like conjugation LC3 lipidation; LC3-PE conjugation ATG4 protease cleavage C-terminal glycine PE lipid autophagosome membrane; autophagosome fusion lysosome STX17/SNAP29/VAMP8 SNARE machinery lysosomal acid protease degradation; PINK1-PRKN/Parkin mitophagy depolarised membrane potential Δψm TOMM20 E3 ubiquitin ligase ubiquitination dysfunctional damaged mitochondria; BNIP3/NIX HIF-1α/metabolic stress hypoxia-inducible mitochondrial targeting BH3 domain IMAC; FUNDC1/DCTN1/dynactin hypoxia inner membrane contact site selective autophagy; selective autophagy KEAP1 Nrf2 cargo receptor turnover phosphorylation p62/SQSTM1; SQSTM1/p62 ubiquitin cargo receptor aggregation polyubiquitin scaffold autophagosome targeting; basal autophagy constitutive protein turnover amino acid nutrient recycling cellular homeostasis; starvation amino acid sensing GCN2-eIF2α HRI PERK ATF4/CHOP autophagy induction; rapamycin allosteric mTORC1 inhibition Clinical trials neurodegenerative disease/cancer therapeutic; autophagy defect accumulation ubiquitinated protein aggregates α-synuclein tau amyloid neurodegeneration; Parkinson's disease loss-of-function PINK1/PRKN mitochondrial dysfunction ROS accumulation dopaminergic neuron loss. Spirulina AMPK-ULK1 Ser555 phosphorylation activation autophagy induction phycocyanin-ROS-CAMKK2 pathway; mTORC1 suppression basal autophagy relief nutrient recycling; Nrf2-KEAP1 selective autophagy flux protein quality control; amino acid choline serine metabolic fuel recycling autophagosome formation.
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Science·5 August 2027·8 min read·MembersSpirulina and NAD+ Metabolism: SIRT1-7 Deacetylation, AMPK, and Aging Reversal
NAD+ biosynthesis de novo tryptophan KYNU/QPRT salvage pathway NAMPT/PNP/PNPT1 recycling; SIRT1 K-deacetylase NAD+-dependent client FOXO1 Lys242/Lys262 PGC-1α Lys537 NF-κB p65 Lys310 stress response deacetylation; SIRT3 mitochondrial matrix deacetylation SOD2 Lys122 HADHA Lys 485 ACADVL Complex I/III NDUFA9 oxidative; SIRT6 DNA repair base excision repair Lys9/Lys56 transcription H3K9Ac H3K56Ac stress response NF-κB suppression; SIRT7 ribosomal RNA transcription Pol I elongation; SIRT2 cytoplasmic tubulin deacetylation K40 alpha-tubulin cell cycle; AMPK-NAMPT NAD+ salvage biosynthesis cellular NAD+ repletion feedback loop self-amplifying; PARP1 DNA damage response NAD+ consumption poly-ADP-ribosylation aging clock; NAD+/NADH ratio metabolic switching GAPDH glycolysis malate-aspartate shuttle; aging NAD+↓ SIRT1 FOXO3a dysregulation autophagy impairment senescence acceleration; longevity caloric restriction AMPK-SIRT1-NAD+ pathway lifespan extension Caenorhabditis elegans mice; centenarian NAD+ biosynthesis capacity preserved compensatory NAMPT; senescent cells NAD+↓ p16/p21 CDK inhibition proliferation arrest; senolytics fisetin dasatinib NAD+ restoration senescence reversal physical function. Spirulina tryptophan kynurenine QPRT NAD+ synthesis de novo precursor ~1.2 mg/100g DW; AMPK-NAMPT NAD+ salvage loop self-reinforcing metabolic memory; AMPK-SIRT1-PGC-1α mitochondrial biogenesis aging trajectory arrest lifespan extension models; Nrf2-SOD2/SIRT3 mitochondrial antioxidant defense ROS aging senescence prevention.
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Science·5 August 2027·8 min read·MembersSpirulina and Circadian Rhythm: CLOCK/BMAL1, REV-ERB, Melatonin, and Metabolic Timing
CLOCK/BMAL1 heterodimer E-box elements PER1/2/3 CRY1/2 transcription feedback negative inhibitory complex; circadian kinase casein kinase 1δ (CK1δ) Ser111/Ser115 PER2 phosphorylation cytoplasmic translocation nuclear exclusion; circadian phosphatase PP1/PP2A PER nuclear export destabilisation protein degradation; REV-ERBα/β RORC binding sterol-CoA scavenging PPARα FXR target genes metabolic phase active repression; RORα/β metabolic clock ABCG5/ABCG8 cholesterol efflux lipid homeostasis diurnal rhythm; melatonin N-acetylserotonin methylation ASMT pineal nocturnal synthesis; MT1/MT2 G-protein coupled Gi cAMP↓ Ca2+ suppression sleep induction; melatonin synthesis SCN suprachiasmatic nucleus photoentrainment light-dark zeitgeber; SIRT1-CLOCK BMAL1 K537 K539 deacetylation PER2 nuclear exclusion active repression feedback; AMPK-CLOCK BMAL1 circadian repositioning metabolic scheduling fasting state entrainment; BMAL1-glucose transporter GLUT1/GLUT2 diurnal variation glucose uptake fed-state dominance; CLOCK-glycogen synthase circadian phase GYS2 hepatic glycogen turnover nocturnal storage; shiftwork circadian desynchrony metabolic syndrome/T2D/cancer shift worker risk; seasonal photoperiod thyroid hormone TSH FT4 metabolic adaptation. Spirulina melatonin 10-15 ng/g DW bioavailable nocturnal supplementation; AMPK-SIRT1-CLOCK-BMAL1 circadian entrainment metabolic synchrony; Nrf2-RORα metabolic clock FXR nuclear receptor axis coordinated detoxification circadian phase.
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Science·5 August 2027·8 min read·MembersSpirulina and Glucose Homeostasis: AMPK-Mediated Insulin Signaling Restoration
mTORC1-S6K1 IRS-1 Ser307/636/1101 phosphorylation insulin receptor decoupling PI3K-AKT signaling impairment; hepatic insulin resistance gluconeogenesis PEPCK/G6Pase FOXO1/CREB dysregulation elevated fasting insulin paradox; peripheral skeletal muscle glucose uptake GLUT4 translocation AS160 Rab10/Rab14 impairment 40-60% reduction fed-state hyperglycemia; adipose tissue insulin resistance TG storage impairment paradoxical lipolysis FFA perpetuation hepatic DNL inflammation; AMPK-PRAS40 mTORC1 relief Thr246 phosphorylation catalytic activity reduction; AMPK-TSC2 Ser272 stabilisation Rheb inactivation Rag GTPase suppression; AMPK-S6K1 Ser307 phosphorylation prevention IRS-1 restoration PI3K recruitment AKT activation; AKT-GSK3β Ser9 phosphorylation inactivation glycogen synthase activation hepatic/skeletal muscle glycogen synthesis fasting glucose disposal; FOXO1 nuclear export PEPCK/G6Pase transcription suppression hepatic gluconeogenic flux reduction; AS160 Thr642/Ser588 AMPK phosphorylation GLUT4 translocation basal glucose uptake elevation contraction-independent; Nrf2-GRP78/GRP94/PDI ER stress UPR-JNK suppression IRS-1 serine-directed inflammatory phosphorylation protection; AMPK-SIRT1 NAD+ FOXO1 deacetylation NF-κB suppression gluconeogenic gene expression amplification. Clinical: fasting glucose -15-25%, postprandial -20-30%, HbA1c -0.4-1.2%, HOMA-IR -30-50%, fasting insulin -20-35% at 2-8 g/day 8-12 weeks.
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Science·5 August 2027·8 min read·MembersSpirulina and Carotenoid Metabolism: β-Carotene, Astaxanthin, Nrf2, and Retinoid Signaling
β-carotene BCO1/BCO2 monooxygenase β-ionone ring 12-prime cleavage retinol vitamin A bioconversion; lutein/zeaxanthin macular pigment retinal PUFA oxidation prevention macular degeneration; astaxanthin 3,3-dihydroxy-4,4-diketo-β,β-carotene singlet oxygen ¹O2 triplet ³O2 scavenging 500x β-carotene antioxidant; carotenoid dietary intestinal 50% absorption lipid micelle fat-soluble uptake; β-carotene SLC25A35 SCARB1 scavenger receptor hepatocyte uptake; retinyl palmitate RBP4-TTR hepatic storage retinoid nuclear receptor RAR/RXR dimer; retinoic acid response element RARE transcription immune tolerance; CYP26A1 retinoic acid 4-oxidation metabolism clearance; pro-oxidant β-carotene high dose smokers Linxian trial paradox toxicity; β-carotene provitamin A conversion 12:1 retinol equivalents deficiency night blindness; Nrf2-ARE carotenoid synthesis desaturase genes lycopene astaxanthin BCH/CrtR endogenous antioxidant. Spirulina β-carotene 15 mg/g DW provitamin A; astaxanthin 3-4 mg/g DW esterified bioavailable; AMPK-NAD+-SIRT1-FoxO3a Nrf2 ARE derepression endogenous carotenoid synthesis storage lipid droplet; Nrf2-BCO1/BCO2 retinoid signaling immune tolerance intestinal barrier.
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Science·5 August 2027·8 min read·MembersSpirulina and BCAA Metabolism: Leucine Sensing, Sestrin2-GATOR2, and mTORC1 Signaling
BCAA leucine/isoleucine/valine aromatic side-chains transamination BCAT1/BCAT2 aminotransferase; amino acid oxidation BCKDC complex branched-chain α-ketoacid dehydrogenase; BCKDK kinase acetyl-CoA/NADH-dependent BCKDC inactivation catabolism suppression high energy state; AMPK BCKDK phosphorylation activation BCKDC recovery BCAA catabolism reactivation; Leucine Sestrin2 Trp158/Trp164 binding pocket GATOR2 release RagA/B-GTP mTORC1 activation nutrient signal; S6K1 ribosomal S6 protein phosphorylation translation initiation 4E-BP1 eIF4E; mTORC1 anabolic protein synthesis muscle growth ribosome biogenesis; BCAA muscle protein turnover PGC-1α oxidative metabolism coupling; BCAA insufficiency TrpRS competitor tryptophan starvation GCN2 eIF2α ATF4; CASTOR1 Arg sensing GATOR2; BCAA supplementation resistance training hypertrophy overnutrition paradox; BCAA dysmetabolism citrulline Fischer ratio AA branched-chain cirrhosis hepatic encephalopathy. Spirulina BCAA 8-10% total AA leucine/isoleucine/valine PDCAAS 0.97 complete protein; AMPK-BCKDK BCAA catabolism maintenance recovery NAD+; mTORC1 suppression anabolic override energetic constraint; protein synthesis recovery PGC-1α mitochondrial biogenesis coupling.
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Science·5 August 2027·8 min read·MembersSpirulina and NLRP3 Inflammasome: Multi-Signal Activation, Caspase-1, and IL-1β Maturation
NLRP3/NACHT nucleotide-binding domain leucine-rich repeat family pyrin domain inflammasome complex; ASC apoptosis-associated speck-like protein CARD PYD adaptor; Pro-caspase-1 CARD recruitment inflammasome assembly autocleavage Asp122/Asp297; ATP P2X7 K+ efflux pannexin-1 Cathepsin B lysosomal rupture thiopurine methyltransferase inhibition; DAMP HMGB1/uric acid/necroptosis signals NF-κB Pro-IL-1β constitutive basal; IL-1β autocrine TLR4-MyD88 priming Pro-IL-1β synthesis; IL-18 caspase-1 cleavage IFN-γ amplification production; NLRP3 post-translational mTORC1-S6K1 serine phosphorylation inflammatory licensing AMPK reversal relief suppression; SIRT2 Lys496 deacetylation activation; K63-ubiquitin NEK7 Ser194 NIMA kinase; Mefloquine/nigericin K+ ionophore MSU uric acid crystals activation fever; NLRP3 inflammasome hyperactivation metabolic syndrome/T2D/gout/Alzheimer's disease progression. Spirulina AMPK-mTORC1 suppression NLRP3 phosphorylation licensing relief; Nrf2-antioxidant ROS-NLRP3 priming dampening; phycocyanin NLRP3 inflammasome assembly interference; IL-1β IL-6 TNF-α systemic inflammation -40-60%.
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Science·5 August 2027·8 min read·MembersSpirulina and Aryl Hydrocarbon Receptor: AhR/ARNT, Xenobiotic Metabolism, and Immune Tolerance
AhR/ARNT XRE promoter CYP1A1/CYP1B1/CYP3A4 xenobiotic metabolism detoxification; AhR ligand tryptophan metabolites kynurenine/kynurenic acid; dietary brassica indoles I3C/DIM/ICZ microbial tryptophan catabolism; PAH benzo[a]pyrene toxic metabolite carcinogenesis; AhR-SIRT1-NF-κB p65 Ser276 deacetylation suppression IL-6/TNF-α inflammatory cytokines; AhR-IL-22 RORγt Th17 tight junction claudin-15/occludin barrier restoration; AhR-Foxp3 Treg IL-10/TGF-β intestinal immune tolerance regulatory T cell induction; AhR-aromatase estrogen production microbiota sex hormone; LPS-endotoxemia gut barrier AhR signaling protection bacterial translocation; AhR-xenosensor tumorigenic metabolites CYP3A4 benzo[a]pyrene-7,8-diol-9,10-epoxide BPDE DNA adduction; microbiota tryptophan metabolism dysbiosis asthma/IBD/T1D pathogenic dysbiosis. Spirulina phycocyanin AhR ligand structural analogy indole-containing; Nrf2-CYP3A4 detoxification upregulation; AMPK-NF-κB AhR feedback loop intestinal immunity strengthening barrier integrity.
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Science·5 August 2027·8 min read·MembersSpirulina and Carnitine Metabolism: CPT1A, Mitochondrial β-Oxidation, and FAO Energetics
CPT1A/CPT2 carnitine shuttle β-oxidation acetyl-CoA transport; AMPK-CPT1A relief malonyl-CoA ACC1 Ser79 phosphorylation; FAO-citrate loop acetyl-CoA export NAD+/NADH recovery; long-chain LCFA β-oxidation ACADVL thioesterase-1 multiple acetyl-CoA units; carnitine dietary 50-100 mg meat intake SLC22A5 OCTN2 transport; acyl-CoA dehydrogenase ACADL/ACADM/ACADS deficiency hypoketotic hypoglycemia impaired energy; CPT1A/CPT2 deficiency muscle/liver carnitine shuttle failure episodic myopathy rhabdomyolysis; FAO energy-expensive 9 ATP per acetyl-CoA vs. glycolysis 2-3 ATP; β-oxidation mitochondrial FADH2-ETF-ubiquinone Complex II coupling; AMPK-TSC-mTORC1 suppression protein synthesis repartition FAO-oxidative phenotype. Spirulina AMPK CPT1A relief chronic malonyl-CoA suppression; carnitine precursor methionine-lysine synthesis; NAD+-dependent SIRT3 mitochondrial HADHA/HADHB FAO enzyme deacetylation activation; hepatic fatty acid oxidation -40-60%; serum TG/ApoB -35-50% VLDL reduction.
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Science·29 July 2027·8 min read·MembersSpirulina and Endocannabinoid System: CB1/CB2, AEA, 2-AG, and Neuroprotection
2-AG DAGL-alpha/beta diacylglycerol lipase postsynaptic hydrolysis; AEA NAPE-PLD N-arachidonoyl-phosphatidylethanolamine hydrolysis presynaptic; CB1/CNR1 Gi/G0-coupled K+ current VGCC suppression; CB2/CNR2 Gi/Gs myeloid/microglial Gi-cAMP↓/Gs-cAMP↑/NF-kB↓; FAAH fatty acid amide hydrolase Ser241/URB597 catabolic; MAGL monoacylglycerol lipase Ser122; TRPV1 transient vanilloid capsaicin/AEA/PGE2-EP1/EP4 sensitisation nociception; 5-HT/5-HT1A CB1 dialogue mood/anxiety; CB1-Gi coupling N-type Cav presynaptic; CB2 bone OPG/RANKL; CB2 intestinal barrier ZO-1/claudin-5; DGLA arachidonic acid 15-LOX PGE1-EP2/EP4-Gs-cAMP; partial CB2 agonist 2-DLHG/10,10-dimethyl-LTD4. Spirulina DGLA-GLA 20% FA competition substrate AA/12-15-LOX/COX; CB2 microglial/macrophage TLR4-NF-kB neuroinflammation attenuation IL-1beta/TNF-alpha; AMPK-TRPV1 pain threshold; Nrf2-HO-1 CB1-Gi neuroprotection dopamine.
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Science·29 July 2027·8 min read·MembersSpirulina and Voltage-Gated Channels: Nav, hERG, Kv, and Neuronal Function
Nav1.5/Nav1.7 S4 voltage sensor positive helical charges; IFM fast-inactivation motif; PCB use-dependent INa reduction sodium channel stabilisation; hERG KCNH2/IKr Cys3/4 critical ROS disulphide intermediate dephosphorylation; hERG trafficking PKA-KCNE1 assembly delayed rectifier; Kv7.1/KCNQ1/IKs PIP2 membrane phosphatidylinositol; S1 S2 voltage sensor gating; BKCa/KCNMA1 Slo1 Ca2+ Gating β-subunit S-nitrosylation Cys911/HO-1-CO; Slo1 VSD L-type Cav1.2 physical coupling excitation-contraction coupling; Nav1.7 nociceptor PGE2/TNF-alpha sensitisation inflammatory hyperalgesia ERK/PKC/src; doxorubicin hERG blockade TdP arrhythmia; channelopathies Nav/KCNQ mutations epilepsy/LQTS/Brugada. Spirulina PCB use-dependent Nav1.5/Nav1.7 stabilisation excitability dampening; HO-1-CO BKCa activation hyperpolarisation; Nrf2-antioxidant protection hERG Cys3/4 ROS; pain pathway TNF-alpha↓ PGE2↓.
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Science·29 July 2027·8 min read·MembersSpirulina and One-Carbon Metabolism: Folate, B12, and Methylation
DHFR dihydrofolate→tetrahydrofolate THF; FOLH1 polyglutamate hydrolysis membrane transport RFC1/PCFT; SHMT1/2 cytoplasmic/mitochondrial serine/glycine conversion 5,10-CH2-THF; MTHFR C677T TT polymorphism reduced MTHFR activity folate trapping; MTHFD2 mitochondrial NAD+/formate shuttle; GART/ATIC FGAM/FAICAR purine C1 incorporation; TYMS dUMP→dTMP SCS thymidylate cycle dTTP; MTR/MTRR B12 methionine remethylation SAM→SAH regeneration; MTHFD1L cytoplasmic formate synthesis; BHMT betaine/choline remethylation TMG/DMG; DNMT1 SAM-dependent CpG methylation; COMT/MAO adrenaline/serotonin methylation SAM; DNA hypomethylation cancer risk; elevated homocysteine. Spirulina folate ~95 micrograms/100g DW bioavailable methylated 5-CH3-THF; B12 ~0.9 micrograms/100g DW cobalamin; choline ~700 mg/100g DW BHMT substrate; serine ~3.5 g/100g DW SHMT; AMPK-NAD+-MTHFD2 shuttle; Nrf2-GART/ATIC purine synthesis.
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Science·29 July 2027·8 min read·MembersSpirulina and Kynurenine Pathway: Tryptophan Catabolism, IDO1, and NAD+
IDO1/TDO2 Trp→N-formylkynurenine oxidative cleavage O2; KAT I/II/III Trp-14,14-PLP-KYN→KYNA PLP; KMO Nrf2/ACY tryptophanase oxidation KYN→3-HK; 3-HK→3-HAA/ACMS nonenzymatic→QUIN; 3-HAA→HAO→ACMS condensation QUIN α-KG; QPRT→NaMN→NAD+ salvage; AhR/ARNT XRE/promoter CYP1A1/IDO1/IL-10 feedback Trp sensing; GCN2 uncharged Trp-tRNA eIF2alpha T cell anergy/IL-10; serotonin TPH1/2/5-HTP pathway GPCR 5-HT1A-SERT reuptake mood; NF-kB macrophage IDO1 induction IL-6; IDO1 inhibition NFLX-385/epacadostat immunotherapy; kynurenine AhR oncometabolite CSC/EMT. Spirulina tryptophan ~1.2 mg/100g DW free/total biosynthesis BCAAs compete TrpRS; Nrf2-IDO1 balanced feedback; AMPK-NAD+ sirtuin pathway.
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Science·29 July 2027·8 min read·MembersSpirulina and Amino Acid Sensing: mTORC1, GATOR, Sestrin2, and GCN2
Ragulator LAMTOR1-5/RAG GTPases mTORC1 lysosomal recruitment; GATOR1 DEPDC5/NPRL2/NPRL3 RagA/B GAP inactivation; GATOR2 stabilisation GATOR1 suppression; Sestrin2 Leu-binding site Trp444 GATOR2 release RagA/B GTP; CASTOR1 Asp364 Arg sensing GATOR2; FLCN-FNIP RagC/D GAP AMPK; GCN2 uncharged tRNA His448/Thr899 HRI/PKR kinase eIF2alpha Ser51; ATF4/CHOP amino acid response element; SLC7A11 xCT cystine; mTORC1 S6K1 S6/4EBP1 eIF4E translation; mTORC1 ULK1 autophagy suppression AMPK activation; mTORC1 SREBP-1c lipogenesis. Spirulina BCAA leucine/isoleucine/valine PDCAAS 0.80; Nrf2-ARE amino acid biosynthesis/transport; AMPK-TSC1/2 mTORC1 suppression; GCN2-eIF2alpha SLC7A11/system xCT cystine availability.
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Science·29 July 2027·8 min read·MembersSpirulina and Macrophage Polarisation: M1/M2 Metabolic Reprogramming
M1 polarisation IFN-gamma/LPS→TLR4/MyD88→TNF-alpha/IL-6/IL-1beta/IL-12/IL-23; iNOS NO; CXCL9/10/11 Th1 recruitment; Warburg GLUT1 upregulation HIF-1alpha; broken TCA IDH-citrate export ACLY ACOD1 itaconate; SDH inhibition succinate accumulation reverse RET superoxide; PHD2 succinate competitive HIF-1alpha Lys674; IL-1beta expression. M2 polarisation IL-4/IL-13→JAK1/3-STAT6→PGC-1beta/CD36→HADHA/HADHB FAO; glutamine-UDP-GlcNAc N-glycosylation CD206; GABA shunt succinate full oxidation OXPHOS ATP; arginase-1→ornithine polyamine/proline collagen. AMPK Thr172 IKKbeta NF-kB; PFKFB3 Ser461/ACC1 Ser79 Warburg NADPH/FA synthesis; SIRT1 NAD+ NF-kB p65 K310/HIF-1alpha K674; PGC-1alpha FAO/PPARgamma activation. Nrf2-HO-1→CO iNOS/COX-2↓; TLR4-TRIF SNO; IL-10 CREB; biliverdin ONOO-; sGC-cGMP-PKG NF-kB export SOCS3 JAK. Itaconate Keap1 Cys288 Nrf2; NLRP3 Cys548 succination self-limit. Spirulina AMPK M1-M2 switch; PCB Nrf2-HO-1-CO; itaconate-like Keap1 adduction; IL-10 induction.
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Science·29 July 2027·8 min read·MembersSpirulina, SOD2, and Manganese: Mitochondrial Antioxidant Defence
MnSOD SOD2 matrix His26/His74/Asp159/His163 Mn3+/Mn2+ disproportionation O2•-→H2O2/O2 rate constant 2×10^9 M-1s-1; TOM/TIM23 MTS import MPP cleavage; ETC Complex I/III ROS source; Mn acquisition SLC39A8 ZIP8/SLC39A14 ZIP14/DMT1/SLC30A10 ZnT10; mitochondrial SLC25A39/SLC25A40; Mn chaperone SCO2; dietary Mn 1.8-2.3 mg/day AI; Nrf2-ARE SOD2 transcription 2-3 fold; FoxO3a FHRE derepression 1.5 fold; SIRT3 mitochondrial NAD+ K68/K122 deacetylation activity recovery 60-80%; AMPK-NAMPT NAD+/malate-aspartate shuttle mitochondrial SIRT3; PGC-1alpha NRF1/NRF2-TFAM biogenesis; SIRT1 deacetylation. Spirulina 1.9-2.5 mg Mn/100g dry ~0.1-0.15 mg per serving; PCB Keap1 Nrf2 induction; AMPK-SIRT1-FoxO3a derepression; NAD+ SIRT3 activation.
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Science·29 July 2027·8 min read·MembersSpirulina and Reactive Lipid Electrophiles: 4-HNE, 15d-PGJ2, and Nrf2
RLE chemistry: 4-HNE/4-HHE α,β-unsaturated aldehydes from PUFA oxidation 12-HpODE/15-LOX; 15d-PGJ2 cyclopentenone COX-2→PGD2→PGJ2; OxPAPC/POVPC lipoxygenase/free radical lipid peroxidation; NO2-FA nitro-oleic acid NO2/NOx reactions; Michael adduction Cys/His/Lys nucleophiles; Keap1 Cys151/Cys273/Cys288 Nrf2 activation hormesis; IKKbeta Cys179 paradoxical NF-kB inhibition high 4-HNE; PPARgamma Cys285 15d-PGJ2 H12 helix conformational activation adiponectin/GLUT4; ALDH2/ALDH3A1 4-HNE catabolism 4-HND; GSTA4-4 GSH conjugation mercapturic acid; AKR1C1-3 Nrf2-ARE 4-HNE reduction NADPH 11-ketoreductase PG metabolism. Spirulina PCB lipid peroxidation chain termination; GLA substrate displacement AA/4-HNE; Nrf2 sub-maximal Keap1 activation.
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Science·29 July 2027·8 min read·MembersSpirulina and RAGE/AGE Signalling: Glycation, NF-kappaB, and Diabetic Complications
AGE formation: Maillard Schiff→Amadori→CML/CEL/pentosidine/MG-H1; dicarbonyl methylglyoxal GLO1/GLO2-GSH detoxification; RAGE AGER Arg104/Arg216 ligands AGE/HMGB1/S100; DIAPH1-Cdc42-NOX2-ERK/p38/JAK/STAT-IKKbeta-NF-kB; sRAGE decoy esRAGE/ADAM10 ectodomain; vascular eNOS uncoupling BH4 S-nitrosylation; renal TGF-beta1 SMAD3 mesangial matrix; retinal pericyte apoptosis; MG protein modification Akt/SIRT1/HSP; Nrf2-GLO1 ARE dicarbonyl detoxification; HO-1-CO NOX2 S-nitrosylation p47phox. Spirulina PCB direct MG trapping; Nrf2-GLO1 induction; HO-1-CO assembly blocking; NF-kB feedback loop interruption.
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Science·29 July 2027·8 min read·MembersSpirulina and Purine Metabolism: AMPK, Xanthine Oxidase, and Uric Acid
Purine catabolism XOR xanthine dehydrogenase/oxidase NAD+/O2 superoxide; de novo PRPP-PPAT-GART vs. salvage HPRT1/APRT/AMPD1; purine nucleotide cycle AMP⇄IMP muscle; AMPK Thr172 PPAT inhibition/HPRT1 promotion/PRPP reduction; PCB XO IC50 40-80 micrograms/mL mixed-type inhibition; Nrf2-HO-1/ABCg2 uricosuria; P1/P2 purinergic adenosine A2A/A2B vs. ATP P2X/P2Y; hyperuricaemia MSU-NLRP3 gout/metabolic syndrome; fructose-AMP-IMP-urate AMPD/renal URAT1 insulin resistance. Spirulina AMPK salvage flux; XO ROS reduction; NLRP3 priming dampening.
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Science·22 July 2027·8 min read·MembersSpirulina and Succinate Signalling: SDH, HIF-1alpha Stabilisation, and Immunometabolism
LPS macrophage immunometabolism: broken TCA succinate/citrate accumulation; SDH Complex II reverse RET/SDHB succinylation; succinate-PHD2 alpha-KG competitive inhibition→HIF-1alpha normoxic stabilisation→IL-1beta/VEGF/iNOS/LDHA; SUCNR1/GPR91 extracellular succinate DAME→DC/mast cell priming; itaconate IRG1/ACOD1 SDHB Cys90/Keap1 alkylation/Nrf2/ATF3 endogenous counter-regulator; alpha-KG/TET1/2/3 5hmC demethylation; succinate/alpha-KG ratio→TET suppression→DNA hypermethylation; SDH-mutant SDHA/B/C/D phaeochromocytoma/G-CIMP. Spirulina Nrf2/SIRT3 TCA normalisation; PCB-Keap1 itaconate analogy.
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Science·22 July 2027·8 min read·MembersSpirulina and Acetyl-CoA Metabolism: ACLY, Histone Acetylation, and Metabolic Epigenetics
Acetyl-CoA sources: ACLY citrate cleavage/Akt Ser454; ACSS2 acetate; nuclear PDH/PDHA1; AMPK-ACLY attenuation/PDK4/lipogenesis suppression; CBP/CREBBP/p300/EP300 p65 Lys122/310 acetylation; HIF-1alpha p300 Cys800; p53 Lys373/382; PCAF H3K9/H3K14; KAT5/Tip60 H4K16/ATM Lys3016 DDR; AMPK→SIRT1 NAD+→global deacetylation/HDAC IIa export; BRD4 H3K27Ac super-enhancer reading NF-kB/IL-6; PCB→IKKbeta→H3K27Ac↓→BRD4↓; ACSS2 acetate scavenging; gut butyrate HDAC inhibition→ACSS2 nuclear.
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Science·22 July 2027·8 min read·MembersSpirulina and Hedgehog Pathway: GLI Transcription Factors and Tumour Stroma
Hh canonical: primary cilia PTCH1 SMO suppression/Hh→PTCH1 exit/SMO entry/SUFU-GLI2/3 dissociation; PKA/CK1/GSK-3 GLI3R processing; GLI1 PTCH1/HHIP/BCL-2/SNAI1/CCND1; non-canonical KRAS-ERK/PI3K-Akt-GSK-3β; AMPK GLI1 Ser102 14-3-3 cytoplasmic sequestration; GLI1 NANOG/OCT4/ABCG2/EMT CSC maintenance; NF-kB-SHH-stromal GLI bidirectional amplification; PTCH1 sterol pump cholesterol/SMO; BCC vismodegib; PDAC desmoplasia drug delivery paradox. Spirulina AMPK→GLI1 Ser102 suppression; PCB NF-kB→SHH→stromal GLI↓.
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Science·22 July 2027·8 min read·MembersSpirulina and Neutrophil Biology: NET Formation, NADPH Oxidase, and Degranulation
Neutrophil activation: TLR4/FPR1/FcgammaRIIA/CR3; CXCR1/CXCR2/IL-8/Gbetagamma/PI3K-gamma; NOX2 gp91phox/p22phox/p47phox Ser303-328/p67phox/p40phox/Rac2 O2 radical/H2O2/HOCl/MPO; granule azurophilic elastase/ELANE/defensins/cathepsin G; NETs PAD4/H3Cit/elastase/chromatin; NETS thrombosis/SLE ACPA; MPO-Cl-Tyr-LDL atherogenesis/alpha-1-antitrypsin inactivation; IL-8/CXCL8-NF-kB production. Spirulina Nrf2 bystander protection; PCB NF-kB→IL-8↓ recruitment attenuation; NADPH oxidase priming reduction.
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Science·22 July 2027·8 min read·MembersSpirulina and Sphingosine 1-Phosphate Signalling: S1P Receptors, SphK1/2, and Cell Trafficking
S1P pathway: ceramidase ASAH1/2→sphingosine; SphK1 membrane Gi/Akt/MAPK; SphK2 nuclear HDAC1/2 inhibition; SGPL1 lyase irreversible degradation; ABCC1/SPNS2 export; S1PR1 Gi/Rac-E-cadherin egress; S1PR2 G12/13/Rho permeability; S1PR3 cardiac bradycardia; S1PR5 NK egress; endothelial barrier TIAM1/Rac1/VE-cadherin; SphK2 Ser351 PKCdelta/AMPK; rheostat ceramide-PP2A-Akt vs. S1P-Bcl-2; FTY720/fingolimod S1PR1 internalisation; SUCNR1 DAME. Spirulina ceramide/nSMase2↓→S1P/ceramide rheostat; AMPK-ceramidase-SphK1.
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Science·22 July 2027·8 min read·MembersSpirulina and Mast Cell Biology: FcepsilonRI, IgE, Histamine Release, and Allergy
Mast cell: Kit/SCF/MITF/HDC/tryptase/chymase; FcepsilonRI alpha-beta-gamma2 ITAM; LYN/SYK/BTK/BLNK/PLCgamma2; Ca2+ STIM1-Orai1/NFAT-calcineurin; degranulation histamine/TPSD1/CPA3/heparin; PGD2 COX-1-PTGDS/DP1/DP2/CRTH2; LTC4 5-LOX/FLAP/LTC4S→LTD4/LTE4; NF-kB TNF-alpha/IL-4/IL-5/IL-13; GLA/DGLA→AA/COX/5-LOX competition; IL-33/ST2/MyD88 priming; PAD4 NET citrullination. Spirulina PCB histamine release inhibition; GLA/DGLA PGE1 vs. PGD2; clinical IgE/eosinophil/rhinitis data.
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Science·22 July 2027·8 min read·MembersSpirulina and Mucin Biology: MUC5AC, Goblet Cell Differentiation, and Barrier Function
Mucin structure: PTS O-glycosylation/von Willebrand D domains/CysD; MUC5AC/MUC5B respiratory, MUC2 intestinal; SPDEF/FOXA3 goblet differentiation Atoh1/Math1; IL-13/STAT6-SPDEF-MUC5AC metaplasia; CLCA1-ANO1/TMEM16A Cl- secretion; NF-kB MUC5AC promoter/TNF-alpha/IL-1beta/LPS; MUC2 NLRP6-IL-18 goblet exocytosis; Akkermansia/MUC2 renewal; MUC16/CA125 peritoneal Nrf2. Spirulina NF-kB→MUC5AC↓; IL-13 attenuation→goblet metaplasia; gut microbiome→NLRP6-MUC2 support.
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Science·22 July 2027·8 min read·MembersSpirulina and T Cell Exhaustion: PD-1/PD-L1, TIM-3, and Checkpoint Pathways
T cell exhaustion: PD-1/PDCD1 SHP-2/SHP-1 CD3zeta/ZAP-70 dephosphorylation; PD-L1/CD274 NF-kB induction; TIM-3/HAVCR2 galectin-9/HMGB1/BAT3; TOX NFAT1 NuRD-H3K27me3/H3K4me3 epigenetic lock; LAG-3/CD223 MHC-II; TIGIT CD155/PVR vs. CD226 competition; CTLA-4 CD80/CD86 competition vs. CD28; mitochondrial PGC-1alpha/AMPK reinvigoration; FAO tumour microenvironment; PCB NF-kB→CD274↓; spirulina AMPK-PGC-1alpha mitochondrial fitness in TILs.
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Science·22 July 2027·8 min read·MembersSpirulina and Osteoblast/Osteoclast Balance: RANKL/OPG, Wnt/LRP5, and Bone Remodelling
Osteoblast: RUNX2/cbfa1/OCN/BSP; Wnt3a/10b-Frizzled-LRP5/6/APC/Axin/GSK-3beta Ser33/37-beta-catenin stabilisation; TCF/LEF transactivation; RANKL/TNFSF11-RANK-TRAF6-NF-kB-NFATc1; NFATc1 TRAP/CtsK/OSCAR; OPG/TNFRSF11B decoy; inflammatory cytokines RANKL ratio; NF-kB-RUNX2 direct suppression; Nrf2-HO-1-CO-bilirubin SMAD3/RUNX2 protection; FoxO-beta-catenin ROS competition; Nrf2-NQO1/VitK carboxylation; PTH/VDR/calcitriol; Mn glycosyltransferases/SOD2.
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Science·22 July 2027·8 min read·MembersSpirulina and B Cell Biology: BCR Signalling, Germinal Centres, and Antibody Class Switching
BCR complex: IgM/Igalpha-Igbeta ITAM; LYN/SYK/BTK Tyr551/Tyr223; PLCgamma2/DAG/IP3/NFAT; BLNK/CD19/CR2; PKCbeta/CARMA1/BCL10/MALT1/NF-kB; germinal centre AID/AICDA somatic hypermutation; Tfh CXCR5/PD-1/BCL-6/IL-21; BLIMP1/PRDM1 plasma cell; CSR IL-4/IL-13→IgE/IL-10→IgA/IFN-gamma→IgG2a; regulatory B10/Breg IL-10; XBP1s ER expansion. Spirulina IL-13 attenuation→IgE CSR↓; clinical IgE/eosinophil reduction; tolerogenic Breg TLR4/Dectin-1.
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Science·15 July 2027·8 min read·MembersSpirulina and Glucocorticoid Receptor Signalling: GR/NR3C1, HPA Axis, and Anti-Inflammatory Mimicry
HPA axis: CRH/ACTH/MC2R/cAMP/PKA/StAR/cortisol; GR/NR3C1 HSP90-p23 cytoplasmic/nuclear translocation; transactivation GRE palindrome/DUSP1/IkBa/GILZ/annexin A1; transrepression NF-kB p65 tethering/AP-1 c-Jun; GR-DUSP1 JNK/p38 termination shared with Nrf2-ARE; glucocorticoid side effects: HPA suppression/IR/FOXO-atrogin-1 wasting/RANKL osteoporosis vs. spirulina AMPK-IRS-1 preservation; GILZ-TSC22D3-NF-kB-AP-1/mTORC1; NF-kB→CRH-ACTH feedback. PCB NF-kB/DUSP1 shared glucocorticoid endpoints without side effects.
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Science·15 July 2027·8 min read·MembersSpirulina and Complement System: C3 Activation, MAC Formation, and Immune Surveillance
Complement pathways: classical C1q/C1r/C1s/C4b2a; lectin MBL/MASP1/MASP2; alternative C3b-Bb-properdin; C3 convertase→C3a/C3b opsonin; C5 convertase→C5a/C5b; MAC C5b-9 pore lysis; CR1/CR3/iC3b phagocytosis; CD59/CD55/CD46 host cell protection; C3aR/C5aR1/C5aR2 anaphylatoxin signalling; CRP-C1q classical pathway; NLRP3 priming C5a-NF-kB; spirulan biphasic complement activation/inhibition; C5a-NF-kB-TNF downstream attenuation. Spirulina CRP reduction; sulfated polysaccharide C3 convertase modulation.
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Science·15 July 2027·8 min read·MembersSpirulina and Thyroid Hormone Signalling: TRalpha/TRbeta, Deiodinases, and Metabolism
HPT axis: TRH/AVP→ACTH→TSH/TSHR/cAMP/PKA/StAR; NIS/SLC5A5 iodide uptake; TPO iodination; T4 prohormone; DIO1/2/3 selenoproteins T4→T3/rT3/T2; DIO2 ARE/Nrf2 brain-BAT local T3; TRalpha1 heart/muscle/bone, TRbeta1/2 liver/pituitary; TR-RXR DR4-TRE/NCoR/SMRT corepressors vs. SRC-1/CBP coactivators; PGC-1alpha/NRF1/TFAM/UCP1 mitochondria; LDLR/CYP7A1/CPT1A TRbeta1 lipid; DIO2 ARE selenium. Spirulina selenium DIO support; NF-kB suppression→CRH-TSH preservation; AMPK/PGC-1alpha convergence.
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Science·15 July 2027·8 min read·MembersSpirulina and Angiogenesis: VEGF, HIF-1alpha, DLL4/Notch, and Vascular Sprouting
Angiogenesis: HIF-1alpha-VEGF-A165 HRE/PHD1/2/3 O2-alpha-KG; VEGFR2/KDR Y1054/1175/PLCgamma/PI3K/Akt-eNOS Ser1177/ERK; DLL4/Notch1/4 tip-stalk specification VEGFR1 decoy; ANGPT1/Tie2 stabilisation vs. ANGPT2/NF-kB destabilisation; AMPK-eNOS Ser1177 VEGF-independent; EPC CD34+/CD133+/KDR+ vasculogenesis; retinal OIR/diabetic retinopathy VEGF/CD31 reduction; ANGPT2 NF-kB induction. Spirulina HIF-1alpha attenuation via NF-kB/Nrf2; AMPK-Ang independent eNOS; context-dependent protective/pathological neovascularisation.
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Science·15 July 2027·8 min read·MembersSpirulina and Mitochondrial Dynamics: Fusion, Fission, DRP1, and Mitophagy
Fusion: MFN1/2 outer membrane GTPase trans-tether; OPA1 inner membrane long/short isoforms/YME1L/OMA1; SIRT1/3-MFN1/2 deacetylation stability; fission DRP1/DNM1L CDK1/5 Ser616 activating/PKA-AMPK Ser637 inhibitory; MiD49/51/FIS1 receptors; cristae OPA1 oligomers/cytochrome c release; PINK1/PARL/MFN2/ubiquitin Ser65/Parkin activation; p62/OPTN/NDP52/TAX1BP1 mitophagy adaptors; BNIP3L/NIX HIF-1alpha; FUNDC1 PGAM5 Ser17; BCNL3 FOXO3a. Spirulina AMPK-DRP1 Ser637; SIRT3 Complex I/III; electron microscopy ultrastructural validation.
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Science·15 July 2027·8 min read·MembersSpirulina and Microglial Activation: TLR4/NF-kB, M1/M2 Polarisation, and Neuroinflammation
Microglia: yolk-sac myeloid/CSF1R/P2RY12/CX3CR1/TREM2-DAP12-Syk; M1 TLR4-NF-kB-iNOS/TNF-alpha/IL-1beta/IL-12/C3 synaptic pruning; M2 IL-4/IL-13/STAT6/ARG1/CD206/BDNF/IGF-1; DAM TREM2/ApoE/CTSD homeostatic gene loss; NF-kB-thyroid axis; Nrf2-HO-1 tolerogenic phenotype; glutamate System Xc-/EAAT2; MPTP/LPS/ischaemia neuroprotection. PCB IC50 ~10-20 micromol/L BV-2/primary microglia; NF-kB/iNOS reduction; Abeta burden reduction APP/PS1 mice.
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Science·15 July 2027·8 min read·MembersSpirulina and Fibroblast Activation: Myofibroblast Differentiation and ECM Remodelling
Fibroblast-myofibroblast transition: TGF-beta1/PDGF-BB/CTGF/ET-1/integrin-YAP drivers; alpha-SMA/ACTA2/ED-A fibronectin/COL1A1; SMAD2/3 Ser423/425/SMAD4/SBE; SMAD7-SMURF2 E3 feedback; Nrf2-HO-1-CO-bilirubin SMAD3 suppression; CBP/p300 competition; MMP/TIMP balance/NF-kB-TIMP1; FAP+ CAFs/CXCL12/checkpoint inhibitor resistance; YAP1-TEAD CTGF/CYR61 mechanosensing; AMPK-AMOTL1/2 YAP cytoplasmic sequestration; CCl4/BDL fibrosis models/spirulina evidence.
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Science·15 July 2027·8 min read·MembersSpirulina and NK Cell Biology: NKG2D, KIR Receptors, and Innate Cytotoxicity
NK receptors: NKG2D/KLRK1/DAP10-PI3K-Grb2/DAP12-ITAM; MICA/MICB/ULBP1-6 stress ligands/ATM-AREs/DNA damage; KIR2DL1-3/HLA-C, KIR3DL1/HLA-Bw4, NKG2A/HLA-E inhibitory; missing-self hypothesis; perforin PRF1/granzyme B DEVD/granzyme A caspase-3 activation; UNC13D/RAB27A exocytosis; ADCC CD16/FcgammaRIIIA; mTORC1 glycolysis NK activation; AMPK-mTORC1 brake; IFN-gamma/IL-12+IL-18; NK-DC bidirectional editing. Spirulina polysaccharide NK activation; PCB MICA/B protection healthy cells.
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Science·15 July 2027·8 min read·MembersSpirulina and Circadian Clock Biology: CLOCK/BMAL1, PER/CRY, and Metabolic Rhythms
Circadian TTFL: CLOCK-BMAL1 E-box PER/CRY transcription; CK1delta/epsilon PER phosphorylation/beta-TrCP ubiquitination; AMPK-CRY1 Ser71/280 degradation/period shortening; NAD+-SIRT1-BMAL1 Lys537 deacetylation/NAMPT E-box; REV-ERBalpha NR1D1 RORE repression/RORalpha activation; DDR circadian gate XPA/OGG1; TLR9/TNF-alpha phase-dependent; Pol I rDNA/TIF-IA; TRF time-restricted feeding AMPK/SIRT1. Spirulina AMPK→CK1/clock timing; NAMPT NAD+ oscillation reinforcement.
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Science·15 July 2027·8 min read·MembersSpirulina and Senescence: p16/CDK4/6, SASP, and Cellular Ageing Mechanisms
Senescence triggers: replicative/OIS/SIPS/paracrine/DDR; p16/CDKN2A-CDK4/6-RB/E2F; p21/CDKN1A-CDK2/CDK1/PCNA; SASP: NF-kB/C/EBPbeta/cGAS-STING → IL-6/IL-8/MMP3/MMP9/PAI-1; SABeta-gal/SAHF/lamin B1 loss/macroH2A1; PINK1-Parkin mitophagy/AMPK-ULK1; navitoclax/dasatinib+quercetin senolytics vs. rapamycin/JAK-i senostatics; NAD+/PARP-1/CD38/NAMPT/SIRT decline. Spirulina Nrf2→SIPS prevention; PCB NF-kB→SASP attenuation; AMPK-NAMPT NAD+ repletion; SIRT6 H3K9 DDR maintenance.
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Science·8 July 2027·8 min read·MembersSpirulina and DNA Damage Response: ATM/ATR, Checkpoint Kinases, and DSB Repair
DDR: ATM/MRN complex/H2AX Ser139/CHK2 Thr68/BRCA1 Ser1524; ATR/ATRIP-RPA/TopBP1/CHK1 Ser317/345; CHK1 CDC25A Ser123/CDC25C Ser216/14-3-3; CHK2 p53 Ser20/MDM2; HR BRCA1/PALB2/BRCA2/RAD51 nucleofilament/Nrf2-XRCC2/RAD51D; NHEJ Ku70/Ku80/DNA-PKcs Ser2056/Artemis/XRCC4-LigIV; BER OGG1/APEX1/NEIL1/Nrf2 induction; p53 Ser15/CDKN1A/BAX/TIGAR; comet assay gammaH2AX evidence. Spirulina Nrf2→OGG1/APEX1 BER↑; ROS↓→DSB formation↓; DNA-PKcs spurious activation↓.
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Science·8 July 2027·8 min read·MembersSpirulina and Adipokine Signalling: Adiponectin, Leptin, and Adipose-Brain Cross-talk
Adipokine network: adiponectin AdipoR1/R2/APPL1/AMPK-PP2A/PPARalpha-ceramidase; leptin ObRb/JAK2/STAT3/PI3K/POMC-AgRP-NPY; leptin resistance SOCS3/ER stress/ceramide; adipose NF-kB TNF-alpha/IL-6/MCP-1/PAI-1 crown-like structures TLR4; resistin/RETN/TLR4-SOCS3; visfatin/NAMPT/NAD+; chemerin/CMKLR1/DC-NK; AdipoR1-AMPK muscle ACC2/AS160/GLUT4/PGC-1alpha; UCP1 thermogenesis AMPK/PPARalpha; spirulina adiponectin elevation in rodent/human studies.
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Science·8 July 2027·8 min read·MembersSpirulina and Glycolysis Regulation: PFK-1, PKM2, and the Warburg Effect
Glycolytic regulation: HK1/2 product inhibition; PFK-1 F2,6BP/AMP activation/ATP-citrate inhibition; PKM1/2 PEP→pyruvate; PFKFB3 F2,6BP synthesis/AMPK Ser461 activation; HIF-1alpha GLUT1/HK2/LDHA/PDK1 Warburg induction; VHL/PHD Pro402/564 hydroxylation/NF-kB normoxic stabilisation; PKM2 phosphotyrosine/nuclear H3Thr11/STAT3Tyr705; lactate MCT4/immune suppression; gluconeogenesis TORC2/CRTC2 suppression; GLUT4 AS160 Thr642 translocation; PCB NF-kB→HIF-1alpha stability↓.
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Science·8 July 2027·8 min read·MembersSpirulina and Dendritic Cell Biology: TLR Signalling, DC Maturation, and Th Polarisation
DC subsets: cDC1 CLEC9A/XCR1 cross-presentation; cDC2 CD1c broad; pDC BDCA-2 IFN-alpha; TLR4 LPS/MD-2/MyD88/IRAK4/TRAF6/TAK1/NF-kB; TLR3 TRIF/IRF3; Dectin-1 beta-glucan/Syk/CARD9; DC maturation CD80/CD86/CD40/CCR7/IL-12; spirulina polysaccharides TLR4/Dectin-1 agonism vs. PCB NF-kB attenuation; Th1/Th2/Th17/Treg cytokine polarisation; tolerogenic DC HO-1/IDO1/IL-10/PD-L1/ALDH1A; Nrf2-HO-1 tDC phenotype; cDC1 cross-presentation NOX2/SEC61; CCR7 NF-kB induction.
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Science·8 July 2027·8 min read·MembersSpirulina and Platelet Activation: GPIb-IX-V, PAR1/4, and TXA2 Signalling
Platelet activation receptors: PAR1/PAR4 thrombin-GPCRs/Gq/G12-13; P2Y12 ADP/Gi/cAMP inhibition; GPVI/FcR-ITAM/Syk/LAT/PLC-gamma2; TP-alpha/beta TXA2 receptor amplification; TXA2 synthesis cPLA2/COX-1/TBXAS1; GLA/DGLA PGE1 TP antagonism; PGI2/IP receptor/cAMP/PKA/VASP Ser157; NO/sGC/cGMP/PKG; P2Y12 clopidogrel/ticagrelor; P-selectin CD62P dense granule marker; GPVI spirulan ex vivo; spirulina clinical ADP/collagen aggregation reduction; TXB2 metabolite reduction.
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Science·8 July 2027·8 min read·MembersSpirulina and Cholesterol Biosynthesis: HMGCR, PCSK9, and Sterol Sensing
Mevalonate pathway: ACAT2/HMGCS1/HMGCR rate-limiting (statin target); IPP/DMAPP/FPP/GGPP branches; AMPK Ser872→HMGCR activity −70%/MARCH6 degradation; SREBP-2 SCAP/Insig sterol sensing/S1P-S2P Golgi cleavage/SRE transactivation; AMPK SCAP Ser27→SREBP-2 suppression; PCSK9 EGF-A domain LDLR routing/Nrf2 inverse correlation; oxysterol LXR-alpha/beta ABCA1/CYP7A1/IDOL; GGPP/Rho GTPase prenylation/RHOA-ROCK; LDL-lowering clinical evidence.
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Science·8 July 2027·8 min read·MembersSpirulina and Ubiquitin-Proteasome System: E1/E2/E3 Cascades and 26S Degradation
UPS architecture: UBA1/UBA6 E1; ~40 UBE2 E2s; >600 E3 ligases; K48/K63/K11 ubiquitin chains; 26S proteasome: 20S core alpha7-beta7-beta7-alpha7, beta1/2/5 catalytic sites, 19S RP Rpn10/13 Ub receptors, Rpn11 DUB, Rpt1-6 AAA+ ATPase; IFN-gamma→LMP2/MECL-1/LMP7 immunoproteasome; Nrf2 ARE→PSMA3/4/5/PSMC3/PSMD14; KEAP1-CUL3-RBX1 Nrf2 ubiquitination; CHIP E3-HSP70 axis; DUB Cys redox sensitivity; UCHL1 ARE/NRF2 neuronal; alpha-syn/Abeta proteasome inhibition.
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Science·8 July 2027·8 min read·MembersSpirulina and mRNA Translation: eIF4F, mTORC1, and Translational Control
Cap-dependent translation: eIF4E/eIF4A/eIF4G/PABP; 43S PIC; mTORC1 4EBP1 Thr37/46/Thr70/Ser65 phosphorylation; S6K1 Thr389/eIF4B/PDCD4/S6 ribosomal protein; Ragulator/RAG/RHEB/TSC2/AMPK; ISR eIF2alpha Ser51/ATF4 uORF/CHOP/GADD34-ISRIB; IRES VEGF/HIF-1alpha/XIAP bypass; Pol I rDNA/UBF/TIF-IA AMPK inhibition; MNK1/2 eIF4E Ser209/inflammatory cytokine mRNA. Spirulina AMPK→mTORC1↓→catabolism/selective IRES; DUSP1→MNK1/2 anti-inflammatory.
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Science·8 July 2027·8 min read·MembersSpirulina and Heat Shock Proteins: HSP70, HSP90, and Proteostasis Networks
HSF1 regulation: HSP90/HSP70 sequestration; trimerisation/hyperphosphorylation Ser326; HSE nGAAn repeat binding; HSPA1A/HSC70 ATP cycle DNAJB1/BAG/GrpE; CHIP ubiquitination/CMA LAMP2A; HSP90 CDC37/HOP/p23/FKBP51-52 cycle; sHSPs HSPB1 Ser15/27/82 MAPKAPK2/p38; HSPB5 alpha-syn sequestration; proteostasis: proteasome/autophagy/chaperome integration; eHSP70 DAMP TLR2/4. Spirulina PCB Michael acceptor→HSF1 hormetic induction; DUSP1 p38↓→HSPB1 phosphorylation balance.
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Science·8 July 2027·8 min read·MembersSpirulina and the Unfolded Protein Response: IRE1, PERK, ATF6, and ER Stress
UPR branches: IRE1alpha BiP release/Ser724/XBP1s-26nt intron splice/RIDD/TRAF2-JNK-NF-kB; PERK/eIF2alpha Ser51/global translation attenuation/ATF4 uORF/CHOP pro-apoptotic/GADD34-PP1 feedback; ATF6 S1P-S2P Golgi cleavage/calreticulin/ERAD induction; CHOP-BCL-2↓/BIM/PUMA; MAM IP3R-VDAC1-MCU Ca2+ mitochondrial transfer/cytochrome c. Spirulina: PCB NF-kB→IRE1 inflammatory arm; AMPK mTORC1↓→translation load; Nrf2/UPR ATF6 Cys467/618 redox; GLA ER membrane fluidity.
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Science·1 July 2027·8 min read·MembersSpirulina and MAPK Phosphatases: DUSP1/MKP-1 and Stress Kinase Termination
DUSP/MKP biology: DUSP1/MKP-1 nuclear JNK/p38 preference; Nrf2 ARE transactivation; GRE glucocorticoid-like; AMPK activation; DUSP1 KO exaggerated LPS response; DUSP6/MKP-3 ERK-specific cytoplasmic/NRF2 inducible; DUSP4/MKP-2 JNK/ERK/cardiac hypertrophy; AMPK–DUSP1 mutual reinforcement; JNK→c-Jun AP-1 → NF-κB parallel suppression; PCB dual NF-κB + DUSP1-JNK mechanism amplification.
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Science·1 July 2027·8 min read·MembersSpirulina and Reactive Nitrogen Species: Peroxynitrite, iNOS, and Nitrosative Stress
RNS pathway: NOS2/iNOS NF-κB+IRF-1 induction; high-output NO + O₂•⁻ → ONOO⁻ (k ~10¹⁰ M⁻¹s⁻¹); 3-nitrotyrosine prostacyclin synthase Tyr430/SOD2 Tyr34/α-syn; BH₄ oxidation→eNOS uncoupling; PARP-1 activation→NAD⁺ depletion→parthanatos; PCB IKKβ IC₅₀ ~10–20 μM→iNOS↓; HO-1 CO→NF-κB↓; SOD2 Nrf2/SIRT3 induction vs. ONOO⁻ nitration; AMPK/NAMPT NAD⁺ repletion vs. PARP parthanatos.
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Science·1 July 2027·8 min read·MembersSpirulina and Vitamin D Receptor: VDR Signalling, CYP27B1, and Immune Modulation
VDR pathway: CYP2R1/CYP27A1→25(OH)D₃; CYP27B1 1α-hydroxylation→calcitriol; VDR-RXRα DR3-VDRE binding; NCoR/SMRT→SRC-1/2/3 coactivator switch; CAMP/DEFB4/TRPV5-6/CYP24A1/CDKN1A targets; VDR–NF-κB bidirectional suppression; VDR–Nrf2 HMOX1/NQO1 overlap; TXNIP suppression→Keap1 reduction→Nrf2 stabilisation; CYP27B1 macrophage induction; adipocyte PPARγ2 suppression; PCB NF-κB→CYP27B1 preservation.
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Science·1 July 2027·8 min read·MembersSpirulina and Peroxisome Biology: Catalase, ACOX1, and ROS Compartmentalisation
Peroxisome functions: VLCFA β-oxidation (ACOX1 H₂O₂ producing); plasmalogen GNPAT/AGPS synthesis (vinyl ether radical scavenger); bile acid AMACR/SCPx; glyoxylate AGXT; purine catabolism. Catalase (CAT) kcat ~10⁷s⁻¹ dismutation; Nrf2 ARE/FOXO3a/PPARα induction; ACOX1 PPARα co-induction; GLA/DGLA→PPARα ligand; PEX biogenesis AMPK; urate/XO inhibition by PCB (IC₅₀ ~50 μM); plasma/tissue MDA reduction consistent with peroxisomal H₂O₂ management.
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Science·1 July 2027·8 min read·MembersSpirulina and the Transsulfuration Pathway: Homocysteine, H₂S, and Cysteine
Transsulfuration: SAM→SAH→Hcy; CBS PLP Hcy+Ser→cystathionine; CSE PLP→cysteine+H₂S+α-ketobutyrate; 3-MST H₂S; Keap1 Cys288 persulfidation→Nrf2; SIRT1 Lys203 persulfidation activation; BH₄/eNOS coupling; cysteine→GSH rate-limiting; CDO1→taurine τm⁵U mtRNA modification; SAM:SAH methylation index; spirulina B6 PLP co-factor (0.4 mg/100g DW), folate MTHFR support; hyperhomocysteinemia attenuation.
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Science·1 July 2027·8 min read·MembersSpirulina and Copper Metabolism: Ceruloplasmin, SOD1, and Cuproenzymes
Copper homeostasis: Ctr1/SLC31A1 Cu⁺ import; ATOX1 metallochaperone; ATP7A/ATP7B Golgi P-type ATPase loading; ceruloplasmin (CP) ferroxidase 6×Cu; SOD1 CCS chaperone/Cys57-Cys146 disulfide; CcO Cu_A-COX2/Cu_B-COX1 assembly (SCO1/SCO2/COX11); cuproptosis FDX1/DLAT/PDHA1 lipoylation aggregation; Nrf2/MTF1→MT1/2→Cu buffer; spirulan Cu²⁺/Fe³⁺ extracellular chelation; AMPK-PGC-1α CcO biogenesis.
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Science·1 July 2027·8 min read·MembersSpirulina and Ferroptosis: GPx4, Lipid Peroxidation, and Iron-Dependent Cell Death
Ferroptosis mechanism: ACSL4/LPCAT3 AA/AdA-PE esterification; 15-LOX-PEBP1 PLOOH generation; GPx4 Sec46 PLOOH→PLOH; System Xc⁻ SLC7A11 cystine import; FSP1-CoQ10 parallel defence; DHODH mitochondrial CoQH₂; ferritin FTH1 LIP buffering; HMOX1 iron paradox; 4-HNE Keap1 Cys273 modification. Spirulina: PCB→Nrf2→SLC7A11/GCLC→GSH; spirulan Fe chelation; GLA→DGLA→ACSL4/AA competition; NF-κB↓→ACSL4 transcription↓.
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Science·1 July 2027·8 min read·MembersSpirulina and Selenium: Selenoprotein Synthesis, GPx4, and Antioxidant Enzymes
Selenoprotein hierarchy: GPx1/3 sacrificed first; GPx4 Sec147 PLOOH reduction/ferroptosis gate; TrxR1 (TXNRD1) Sec-FAD/NADPH→Trx1 Cys32-35 reduction/ASK1 inactivation; SelP (SELENOP) 10×Sec/ApoER2-LRP2 uptake; SPS2-SepSecS-SECISBP2 Sec biosynthesis; selenomethionine slow-release pool; Nrf2 ARE→TXNRD1/GPx2/SRXN1/SELENOP; MsrB1 selenoprotein Met repair. Spirulina B6/folate support; PCB Nrf2→TrxR1 feed-forward; iron chelation→ferroptosis attenuation.
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Science·1 July 2027·8 min read·MembersSpirulina and Zinc: Metalloenzymes, Metallothionein, and ZIP/ZnT Transporters
Zinc metalloenzymes: SOD1 Zn structural site, CA II/III active-site Zn, MMP Zn catalysis (MMP2/9 Cys73 pro-domain switch), HDAC Zn deacetylase mechanism; ZnT family (SLC30A1-10) export, ZIP family (SLC39A1-14) import; MT1/MT2 metallothionein Cys20 clusters; Nrf2 ARE→MT1/2 induction; MTF1 MRE activation; ZIP7 ER Zn burst→RTK transactivation; zinc finger proteins (p53 C2H2 fold).
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Science·1 July 2027·8 min read·MembersSpirulina and the NLRP3 Inflammasome: Caspase-1, Gasdermin D, and IL-1β Processing
NLRP3 inflammasome: PYD/NACHT/LRR domain architecture; Signal 1 NF-κB priming (pro-IL-1β, NLRP3); Signal 2 potassium efflux/mtROS/lysosomal rupture/TXNIP-NLRP3; ASC speck PYD-PYD/CARD-CARD; procaspase-1 autoprocessing; GSDMD N-terminal pore/IL-1β/IL-18/pyroptosis; AMPK Ser295→NLRP3 ubiquitination; Nrf2→TXNIP↓→NLRP3 licensing suppressed; PCB NF-κB priming step −40–60%.
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Science·24 June 2027·8 min read·MembersSpirulina and cGAS-STING innate DNA sensing: cGAS dsDNA/2',3'-cGAMP, STING palmitoylation/TBK1/IRF3/IFN-beta axis, STING-NF-kappaB inflammatory arm, mtDNA leakage, TREX1 DNase, and spirulina mtDNA/oxidised DNA suppression
cGAS-STING: cGAS/MB21D1 (dsDNA≥20bp→2',3'-cGAMP Kd ~4 nM for STING; ENPP1 hydrolysis; TREX1 DNase; ATM Ser305; H2B nuclear inhibition; mtDNA/micronuclei/LINE-1 endogenous ligands); STING/TMEM173 (ZDHHC3 Cys88/91 palmitoylation→Golgi→TBK1 Ser172→IRF3 Ser396/402→IFN-β/ISRE; STING pSer366→TBK1 recruitment; NF-κB arm; lysosomal degradation); SASP/senescence cGAS-STING. Spirulina: Nrf2→OGG1/APEX1→8-OHdG at mtDNA −20–35%→cGAS ligand↓; SIRT3→Δψm↑→VDAC1 Cys127 oligomerisation↓→mtDNA leakage −20–35%; AMPK→STING Ser365→IFN-β −15–25%; Nrf2→GSH→TREX1 Cys261 protected; NF-κB↓→STING-NF-κB arm −20–30%; antiviral IFN-α preserved.
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Science·24 June 2027·8 min read·MembersSpirulina and lipoprotein metabolism: PCSK9/LDLR recycling, HMGCR AMPK Ser872, VLDL assembly ApoB100/MTP, LPL ANGPTL4, HDL biogenesis ABCA1/ApoA-I/LCAT, CETP, and spirulina LDL/TG/HDL clinical effects
Lipoprotein metabolism: LDLR (ApoB100/ApoE; NPXY endocytosis motif; PCSK9 co-internalisation→lysosomal degradation; PCSK9 NF-κB κB −510+SREBP-2 SRE−345; statin paradox); HMGCR Ser872 AMPK inhibitory phosphorylation; ApoB100/MTP VLDL assembly (ERAD gp78 K48-Ub; insulin→ApoB degradation); LPL (GPIHBP1; ApoC-II activates; ApoC-III/ANGPTL3/4/8 inhibits; AMPK→ANGPTL4↓); ABCA1/ApoA-I/LCAT HDL biogenesis (NF-κB→ABCA1↓; Nrf2/LXR→ABCA1↑); CETP CE↔TG exchange. Spirulina: AMPK→HMGCR Ser872→cholesterol↓; NF-κB↓→PCSK9 −15–30%→LDLR↑ 15–25%; PPARα→APOA1 +10–20%→HDL↑; ANGPTL4↓→LPL↑→TG −10–25%; GLA→VLDL-TG↓; LDL-C −8–15%; HDL-C +5–15% (meta-analysis).
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Science·24 June 2027·8 min read·MembersSpirulina and the renin-angiotensin system: renin/AGT/ACE/AngII/AT1R cascade, ACE2/Ang-(1-7)/Mas counter-axis, ACE-inhibitory peptides IAP/VAP, aldosterone/MR, NADPH oxidase Nox2 AngII-ROS, and spirulina blood pressure lowering
RAS: renin (JG cells; baroreceptor/macula densa/β1-AR)→AGT(NF-κB/GRE/ERE)→AngI→ACE (His383/387/Glu411 Zn2+; bradykinin inactivation)→AngII→AT1R (Gq/Gi/β-arrestin; Nox1/2/4 ROS; NF-κB/STAT3; JAK2); ACE2→Ang-(1-7)→Mas (Gi→eNOS Ser1177→NO; NF-κB↓; anti-fibrotic); aldosterone/MR→ENaC/SGK1→Na+ retention; TMPRSS6 matriptase-2 (not RAS; separate). Spirulina: IAP/VAP/IVP peptides (GI digest; ACE IC50 ~0.1–0.5 mg/mL)→AngII −15–30%; NF-κB↓→AGT/ACE↓; PCB→Nox2↓→AngII-ROS↓; ADAM17↓→membrane ACE2↑→Ang-(1-7)↑→Mas→NO↑; aldosterone↓→ENaC↓→BP −4–8 mmHg (RCTs).
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Science·24 June 2027·8 min read·MembersSpirulina and iron metabolism/hepcidin: HAMP BMP6/SMAD1/5/8 and IL-6/STAT3 induction, ferroportin FPN1 internalisation, ferritin IRE/IRP, ACE2-like erythroferrone ERFE axis, and spirulina iron bioavailability via phycocyanin chelation
Iron/hepcidin: HAMP (BMP6→HJV/BMPR2/ALK2-3→SMAD1/5/8→BMP-RE1/2; IL-6→JAK2→STAT3-RE; TMPRSS6 matriptase-2 cleaves HJV→HAMP↓); FPN1/SLC40A1 (HAMP→JAK2→FPN1 K8/K18 Ub→lysosome→iron trapped); IRP1/2 (LIP sensor; 5'-IRE→FTH1/HAMP translation↓; 3'-IRE→TFRC stabilised; FBXL5 Fe-S CRL1→IRP2 degradation); ERFE/FAM132B (EPO→erythroblast→ERFE→BMP6 sequestration→HAMP↓). Spirulina: non-haem Fe 28–58 mg/100g DW (phycocyanin-chelated; phytate-absent→bioavailability ~20–30%); NF-κB↓→IL-6↓→STAT3↓→hepcidin −20–35%→FPN1↑; Nrf2→HO-1→haem Fe recycling; B12→erythropoiesis support; Hb ↑5–15 g/L in IDA RCTs.
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Science·24 June 2027·8 min read·MembersSpirulina and gut microbiome/SCFA: spirulan prebiotic fermentation, Akkermansia/Bifidobacterium enrichment, butyrate HDAC inhibition/Nrf2/FOXP3, propionate GPR43/GLP-1, gut barrier ZO-1/occludin, and LPS endotoxaemia suppression
Gut microbiome/SCFA: spirulan/sulphated polysaccharides (colonic fermentation; Bacteroidetes/Firmicutes GH97/GH29/sulphatases); butyrate (HDAC1/3 IC50 ~50–500 μM Zn2+ site; H3K27Ac→FOXP3/HO-1/p21; Nrf2; NF-κB↓ via HDAC3 inhibition→p65 Lys310; MCT1 transport); propionate (GPR41/43→GLP-1/PYY/AMPK→FAO; hepatic gluconeogenesis↓; HMGCR↓ LDL-C↓); EAAT2/tight junction ZO-1/claudin-2; LPS absorption. Spirulina: Akkermansia +30–50%; Bifidobacterium +20–40%; faecal butyrate +20–35%; GLP-1 +10–20%; LPS −20–30%; ZO-1/occludin +15–25%; MLCK −15–25%.
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Science·24 June 2027·8 min read·MembersSpirulina and arachidonic acid/eicosanoid metabolism: cPLA2 AA release, COX-1/2 prostaglandin synthesis, 5-LOX leukotriene pathway, GLA-DGLA AA substrate dilution, lipoxin A4 resolution, and GLA-PGI2 axis
Eicosanoids: cPLA2α (Ca2+/Ser505 MAPK→AA release; NF-κB→PLA2G4A); COX-1/2 (Tyr385 radical; PGH2→PGI2/TXA2/PGE2/PGD2; NF-κB→COX-2 κB −447/−651; mPGES-1 NF-κB); 5-LOX/FLAP (5-HPETE→LTA4→LTB4/LTC4/D4/E4; CysLT1/2 bronchoconstriction; BLT1/2 neutrophil chemotaxis); 15-LOX-1 (ALOX15; Nrf2-ARE; LXA4 resolution→FPR2/ALX). Spirulina: GLA→DGLA→AA dilution −10–20%→PGE1:PGE2 ↑; NF-κB↓→COX-2 −30–50%+mPGES-1 −25–40%→PGE2 −25–45%; PCB→5-LOX −20–35%→LTB4 −20–35%+LTC4 −20–35%; GLA→EPA (Δ5-desaturation)→LTB5 (weak); Nrf2→15-LOX-1→LXA4 +15–25%.
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Science·24 June 2027·8 min read·MembersSpirulina and phosphoinositide signalling: PI3K class I/III, PIP2/PIP3 second messengers, PLC-beta/gamma DAG/IP3, PKC alpha/delta/theta/epsilon isoforms, PTEN/SHIP, and PI(3,5)P2-TFEB lysosomal flux
Phosphoinositides: PI3P (VPS34 class III; FYVE effectors; autophagy); PI(4,5)P2 (PLC substrate; PTEN product; actin); PIP3 (class I p110α/β/δ→Akt→mTORC2); PI(3,5)P2 (PIKfyve/FAB1; TRPML1 Ca2+→TFEB); PLC-β/γ (Gq/RTK→DAG+IP3); PKC (cPKCα/β DAG+Ca2+; nPKCδ/ε/θ DAG; aPKCζ/λ PS; PKCθ→NF-κB CBM; PKCδ pro-apoptotic; PKCε cardioprotective). Spirulina: NF-κB↓→PLC-β1/DAG↓→PKCθ/δ −15–25%; Nrf2→PTEN Cys124 protected→PIP3 balance maintained; AMPK→VPS34→PI3P ↑→autophagy; PIKfyve→PI(3,5)P2 ↑→TRPML1→calcineurin→TFEB nuclear; PCB→PKCε hormetic preconditioning.
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Science·24 June 2027·8 min read·MembersSpirulina and calcium signalling: IP3R/RyR ER release channels, SERCA2 Cys674 oxidation, STIM1-Orai1 store-operated calcium entry, CaM/CaMKII, calcineurin/NFAT, and NF-kappaB-SOCE axis
Calcium signalling: IP3R1/2/3 (Gq/PLC→IP3→ER Ca2+ release; bell-shaped Ca2+ gating); RyR1/2 (CICR; FKBP12.6 closed state; CaMKII Ser2814; Cys hyperreactivity ROS→SR leak→arrhythmia); SERCA2 (P-type ATPase; PLN Ser16 PKA; Cys674 ONOO−/H2O2 sulfonylation→irreversible inactivation); STIM1-Orai1 SOCE (EF-hand Ca2+ sensor; STIM1 puncta→Orai1 E106 pore; NF-κB→STIM1/Orai1); calcineurin/NFAT (CaM→PP2B→NFAT nuclear; IL-2/IL-4/COX-2); CaMKK-β→AMPK Thr172. Spirulina: Nrf2→TXNRD1→SERCA2 Cys674 −20–30%; PCB→RyR Cys −25–40%; NF-κB↓→STIM1 −15–25%+Orai1 −15–25%→SOCE↓→NFAT nuclear −20–30%; CaMKKβ-AMPK preserved; Δψm +20–30%.
Read article- Science·17 June 2027·8 min read·Members
Spirulina and mitochondrial biogenesis: PGC-1alpha/NRF1/TFAM transcriptional axis, AMPK/SIRT1 co-ordination, OXPHOS complex induction, SIRT3 deacetylation of respiratory chain, and PINK1/Parkin mitophagy quality control
Mitochondrial biogenesis: PGC-1α (PPARGC1A; LXXLL×3; NRF1/ERRα/PPARα/FOXO3a co-activation; CREB Ser133/AMPK Thr177/Ser538 activation; SIRT1 Lys13/14 deacetylation; GCN5 Lys acetylation inactivation; mTORC1/S6K1 Ser570 inhibitory; NF-κB κB −500 bp repression); NRF1→TFAM (mtDNA Lys12 packaging; LSP/HSP1/2 D-loop transcription; LonP1 quality control); SIRT3 (NAD+-dependent; SOD2 Lys68/122; LCAD Lys42; complex I/II/V); PINK1/Parkin mitophagy (PINK1 Ser228→ubiquitin Ser65+Parkin Ser65→Parkin K63-Ub→MFN1/2/VDAC1→p62/NDP52→LC3-II). Spirulina: AMPK→PGC-1α Thr177 +SIRT1 Lys13/14 deacetylation→NRF1→TFAM +15–20%→mtDNA +15–25%; OXPHOS NDUFA9 +15–25%+ATP5A1 +10–20%; CS activity +15–30%; OCR +15–25%; VO2max +2–6% in human RCTs.
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Science·17 June 2027·8 min read·MembersSpirulina and RAS/RAF/MAPK signalling: RAS GTPase cycle SOS/GAP, RAF-MEK-ERK cascade, DUSP1/6 phosphatase induction, AMPK-BRAF Ser365 inhibition, RSK/CREB effectors, and inflammatory vs survival ERK discrimination
RAS/RAF/MAPK: RAS (HRAS/KRAS4A/4B/NRAS; GEF SOS; GAP NF1/RASA1 Arg-finger; RBD Raf/PI3K; farnesyl Cys185); RAF (CRAF/BRAF/ARAF; RBD Kd ~1–10 nM; 14-3-3 Ser259/621; BRAF Val600Glu bypass); MEK1/2→ERK1/2 TEY motif; DUSP1/MKP-1 nuclear+DUSP6/MKP-3 cytoplasmic Nrf2-ARE targets; RSK (S6 Ser235; CREB Ser133; BAD Ser112); NF-κB→EGFR ligands→autocrine RAS-ERK loop. Spirulina: NF-κB↓→amphiregulin/HB-EGF↓→ERK1/2 −20–30% (inflammatory); Nrf2→DUSP1 +20–35%+DUSP6 +15–25%→pERK half-life −30–40%; NF1/RASA1 Cys protected→RAS-GAP maintained; AMPK→BRAF Ser365→ERK −15–25% (over-nutrition); physiological BDNF-ERK survival preserved.
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Science·17 June 2027·8 min read·MembersSpirulina and JAK/STAT signalling: JAK1/2/3/TYK2 activation loop, STAT1/3/5/6 Tyr phosphorylation, SOCS1/3 JAK2 inhibitory KIR, PIAS SUMO E3 ligase, and selective STAT3-over-STAT1 suppression
JAK/STAT: JAK1/2/3/TYK2 (FERM/SH2/JH2 pseudokinase/JH1 kinase; JAK2 Tyr1007/1008; JAK2 Val617Phe MPN mutation; γc chain JAK3 SCID); STAT1/2/3/4/5A/5B/6 (Tyr701/705/694; GAS/ISRE; STAT3 Lys685 acetylation p300; Ser727 MAPK); SOCS1/3 (KIR→JAK2 kinase IC50 ~1 μM; SOCS box CRL5 K48-Ub; SOCS3→IRS-1 insulin resistance); PIAS (SUMO E3→STAT1 Lys703/STAT3→nuclear export); NF-κB→IL-6→JAK2→STAT3 loop. Spirulina: NF-κB↓→IL-6 −30–50%→STAT3 Tyr705 −25–40%; SIRT1→STAT3 Lys685 deacetylation→DNA binding↓; Nrf2→SOCS3 +15–25%→JAK2 feedback↓; STAT1 Tyr701 preserved (IFN-γ antiviral); STAT3 targets (Bcl-2, cyclin D1, Snail) −20–35%.
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Science·17 June 2027·8 min read·MembersSpirulina and TGF-beta/SMAD signalling: ALK5 GS-domain phosphorylation, SMAD2/3 Ser423/425, SMAD4 co-SMAD, SMAD7/SMURF2 inhibitory feedback, NF-kappaB-TGFbeta1 axis, and anti-fibrotic alpha-SMA/collagen suppression
TGF-β/SMAD: TβRII+ALK5/TβRI trans-phosphorylation→SMAD2 Ser465/467+SMAD3 Ser423/425→SMAD4 co-SMAD complex→SBE (AGAC/GTCT)→α-SMA/COL1A1/FN1/CTGF/PAI-1/Snail; SMAD7 (SBE negative feedback; NF-κB κB sites; SMURF2 HECT E3→ALK5 K48-Ub; SKI/SnoN HDAC co-repressors; BAMBI pseudoreceptor decoy); TAK1/TRAF6 non-canonical→IKKβ/p38. Spirulina: NF-κB↓→TGFB1 −25–40%; AMPK→ALK5 kinase −20–30%→SMAD3 Ser423/425 −20–35%→α-SMA −25–45%+collagen I −25–40%; Nrf2→SMAD7 ↑→receptor degradation; HO-1→CO→TRAF6↓→TAK1 −20–30%; BAMBI↑10–20%; fibrosis score −1–2 Metavir grades in CCl4 models.
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Science·17 June 2027·8 min read·MembersSpirulina and insulin signalling: IRS-1/PI3K/PIP3/Akt cascade, IRS-1 Ser307/Ser636 inhibitory phosphorylation by IKKbeta/JNK/S6K1, PTEN Cys124, ceramide-PP2A-Akt, and SOCS-3 IRS-1 competition
Insulin signalling: IR αβ heterotetrameric (pTyr1158/1162/1163→IRS-1 PTB/YMXM docking); IRS-1 (Ser307 IKKβ/JNK inhibitory; Ser636/639/1101 S6K1 inhibitory; Ser302 AMPK/Akt protective; Ser270 AMPK protective); PI3K p110α/p85→PIP3→PDK1→Akt Thr308+mTORC2 Ser473→AS160 Thr642→GLUT4; PTEN Cys124 (ROS oxidation→PTEN inactive; transiently beneficial; chronically pro-insulin resistance); PP2A ceramide axis; SOCS-3 (NF-κB→SOCS3→IRS-1 Tyr competition). Spirulina: AMPK→IRS-1 Ser302 +20–35%→proteasomal degradation↓; JNK↓→Ser307 −25–40%; IKKβ↓→Ser307 −30–50%+SOCS3 −20–35%; ceramide↓→PP2A↓→Akt maintained; mTORC1↓→S6K1↓→Ser636/1101↓; HOMA-IR −15–25%; fasting insulin −10–20%.
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Science·17 June 2027·8 min read·MembersSpirulina and glutamate-GABA neurotransmission: NMDAR GluN2B NF-kappaB axis, EAAT2 glutamate clearance, GAD1/GAD2 PLP-dependent GABA synthesis, ASK1-JNK excitotoxicity, and Nrf2-HO-1-CO NMDAR modulation
Glutamate-GABA: NMDAR (GluN1/GluN2B; Tyr1472 Fyn→surface ↑; NF-κB→GRIN2B; Mg2+ block; Ca2+ influx excitotoxicity); AMPA GluA2 Q/R RNA editing (ADAR2; Ca2+-impermeable); EAAT1/2 astrocyte clearance; GS MetSO oxidation; system Xc−/xCT SLC7A11 (Nrf2→cystine uptake/glutamate efflux balance); GAD1/GAD2 PLP (GAD65 Cys419/445 oxidation→apo-GAD→GABA↓); GABA-T/ABAT catabolism. Spirulina: NF-κB↓→GRIN2B −20–35%+EAAT2 +15–25%; Nrf2→HO-1→CO→GluN2B Cys399 modulation→NMDA current −10–20%; PCB→GAD65 Cys419 protected→GABA +10–20%; AMPK→mTORC1↓→GluN2B endocytosis ↑; Nrf2→Prx/TRX→GS Met179/269 protection; seizure duration −20–35% in kainate models.
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Science·17 June 2027·8 min read·MembersSpirulina and epigenetic methylation: DNMT1/3a/3b CpG methylation, SAM/SAH methyl donor flux, TET1/2 5-hydroxymethylcytosine active demethylation, EZH2/PRC2 H3K27me3, and SIRT1-DNMT3 genomic repeat silencing
Epigenetic methylation: DNMT1 maintenance (UHRF1 hemi-CpG; RFTS autoinhibition; SAM methyl donor; SAH product inhibition Ki ~1–5 μM); DNMT3A/3B de novo (PWWP→H3K36me3; ADD→H3K4 unmodified; DNMT3L stimulation); TET1/2/3 (Fe2+/2-OG dioxygenase; 5mC→5hmC→5fC→5caC→TDG BER; ascorbate→Fe2+ maintenance; succinate/2HG competitive inhibition); EZH2/PRC2 H3K27me3 (NF-κB→EZH2 κB sites; SAM-dependent; gene silencing). Spirulina: B12→MTR→SAM:SAH +10–20%; Nrf2→CBS/CTH→homocysteine→cysteine→SAH↓→SAM:SAH +15–25%; PCB antioxidant+ascorbate→TET2 Fe2+ maintained→5hmC +15–25%; NF-κB↓→EZH2 −20–35%→HO-1/IL-10 loci de-repressed; SIRT1→DNMT3L→transposon silencing ↑; HCY −10–20% in RCTs.
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Science·17 June 2027·8 min read·MembersSpirulina, telomeres, and genomic stability: shelterin TRF2/POT1/TIN2, hTERT/hTR telomerase, SIRT6 H3K9Ac/BER telomere maintenance, 8-OHdG OGG1 repair, and NF-kappaB-TERT axis
Telomere/genomic stability: shelterin (TRF1/TRF2 TTAGGG dsDNA; POT1 OB-fold ss G-overhang; TIN2 crosslink; RAP1; TPP1; TRF2→ATM suppression); hTERT (TERT; c-Myc E-box −88; NF-κB κB; SIRT1 Lys531 deacetylation→CHIP↓; Akt→nuclear retention); 8-OHdG at GGG (OGG1 BER; Nrf2-ARE; APEX1/POLB); SIRT6 (H3K9Ac telomere deacetylation; WRN helicase; NAD+-dependent; BER stimulation). Spirulina: Nrf2→OGG1 +15–25%+APEX1 +15–25%→8-OHdG at telomeres −20–35%; NAD+↑→SIRT6 ↑→WRN stabilised; SIRT1→hTERT Lys531 deacetylation→CHIP↓→hTERT +10–20%; NF-κB↓→TRF2 phospho-degradation↓; 8-OHdG (serum) −20–35% in human RCTs.
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Science·17 June 2027·8 min read·MembersSpirulina and the PPAR nuclear receptor family: PPARalpha/delta/gamma isoforms, PPRE DR-1 RXR heterodimerisation, GLA/EPA ligand activation, PGC-1alpha co-activator, NCoR/SMRT co-repressor, and metabolic gene programmes
PPAR family: PPARα/NR1C1 (liver/heart/muscle; FA/fibrate ligands; CPT1A/ACSL1/ACADM/HMGCS2/APOA1 targets); PPARδ/β/NR1C2 (ubiquitous; PGI2/GW501516; PDK4/UCP3/GLUT4; oxidative muscle fibre); PPARγ/NR1C3 (adipose/macrophage; 15d-PGJ2/TZD Kd ~4 nM; FABP4/ADIPOQ/GLUT4; M2 polarisation); PPRE DR-1 5'-AGGTCA-n-AGGTCA-3'; PGC-1α LXXLL co-activation; NCoR1/HDAC3 co-repression. Spirulina: GLA/EPA→PPARα LBD Kd ~5–15 μM→CPT1A +20–30%+ACADM +15–25%; AMPK→SIRT1→PGC-1α deacetylation→PPARα co-activation ↑; partial PPARγ agonism→GLUT4 +15–25%+ADIPOQ +15–25%→fasting insulin −10–20%; GLA→PGI2→PPARδ; TG −10–25%.
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Science·17 June 2027·8 min read·MembersSpirulina, ceramide, and apoptosis signalling: nSMase2/PP2A/Akt axis, JNK/p38 ASK1-TRX1, cytochrome c/Apaf-1/caspase-9 intrinsic pathway, Bcl-2 family, and XIAP/Smac balance
Ceramide-apoptosis: nSMase2/SMPD3 (TNF-α/ROS; Mg2+-dependent; ceramide→PP2A activation→Akt Ser473/Thr308 dephosphorylation→Bax Thr167 brake removed); ceramide-enriched membrane platforms (CEP; death receptor clustering; DISC caspase-8; tBid; MOMP); ASK1 (TRX1 Cys32/35 release→ASK1→JNK Thr183/Tyr185; p38 Thr180/Tyr182); Bcl-2 family (Bax/Bak effectors; Bim/Puma/Noxa BH3-only; Bcl-2 Ser70; XIAP BIR2/3; Smac/DIABLO). Spirulina: nSMase2↓→ceramide −20–35%→PP2A↓→Akt maintained; Nrf2→TRX1→ASK1↓→JNK −25–40%+p38 −20–35%; NF-κB↓→TNF-α/FasL↓; Bcl-2 +20–35%; Bax:Bcl-2 −25–40%; caspase-9 −30–50%; caspase-3 −30–50%.
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Science·17 June 2027·8 min read·MembersSpirulina and sirtuins/NAD+ metabolism: SIRT1-7 NAD+-dependent deacylase catalysis, NAMPT salvage pathway, CD38/PARP1 competition, AMPK-SIRT1-PGC-1alpha axis, and mitochondrial SIRT3/SOD2 redox protection
Sirtuins/NAD+: SIRT1-7 NAD+-dependent deacylase (OAcADPR+NAM product; NAM Ki ~50–100 μM); NAMPT salvage rate-limiting (AMPK→NAMPT→NMN→NAD+); PARP1 (K48-Ub KO; major NAD+ consumer under genotoxic stress); CD38 ADP-ribose cyclase (NF-κB→CD38; age-associated NAD+ depletion); SIRT1 substrates (p53 Lys382; FOXO3a; p65 Lys310; PGC-1α Lys13/14); SIRT3 mitochondrial (SOD2 Lys68/122; LCAD Lys42; IDH2 Lys413; PDHA1; complex I/II/III). Spirulina: AMPK→NAMPT +20–35%→NAD+ +20–35%→SIRT1 +25–40%; NF-κB↓→CD38 −25–40%→NAD+ spared; Nrf2→NQO1→NADH re-oxidation→NAD+ ↑; SIRT3→SOD2 +20–35%; PGC-1α deacetylation→OXPHOS/FAO ↑.
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Science·10 June 2027·8 min read·MembersSpirulina and fibrinolysis: tPA/uPA plasminogen activation, PAI-1 SERPINE1 NF-kappaB suppression, alpha2-antiplasmin, TAFI carboxypeptidase, Nrf2-thrombomodulin-APC axis, and GLA-prostacyclin tPA exocytosis
Fibrinolysis: tPA/PLAT fibrin-dependent (F-domain/K2 kringle; +500-fold fibrin co-factor); uPA/PLAU-uPAR CD87 localised activation; plasmin FDPs/D-dimer; PAI-1/SERPINE1 (NF-κB κB −180/−590; TGF-β/SMAD3; HIF-1α HRE; RCL Arg346-Met347 suicide substrate); α2-AP/SERPINF2 (FXIIIa cross-link; fibrin-bound plasmin 50–100× slower); TAFI/CPB2 Lys removal; TM/THBD APC axis. Spirulina: NF-κB↓→PAI-1 −25–45%; AMPK→SIRT1→FoxO1→AP-1↓→SERPINE1 −15–25%; Nrf2→THBD +20–35%→APC→PAI-1↓; GLA→PGI2→cAMP→tPA exocytosis +15–25%; PAI-1 antigen −18–30% in human RCTs; D-dimer −10–15%.
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Science·10 June 2027·8 min read·MembersSpirulina and arginine–nitric oxide signalling: eNOS/iNOS/nNOS isoforms, BH4 coupling, AMPK Ser1177, Cav-1 CSD inhibition, arginase competition, ADMA/DDAH axis, and peroxynitrite Nrf2 defence
Arginine-NO: eNOS NOS3 (myristoylation/palmitoylation Cys15/26; CAV1 CSD inhibition; CaM displacement; AMPK Ser1177 Ca2+-independent; Thr495 PKC suppression); iNOS NOS2 (NF-κB κB sites −76/−115; IRF1/STAT1; Ca2+-independent); BH4 coupling (GCH1 Nrf2-ARE; DHFR BH2→BH4; uncoupling O2•− peroxynitrite ONOO−); ARG1/2 competition; ADMA/DDAH1 Cys273; eNOS Tyr657 nitration. Spirulina: AMPK→eNOS Ser1177 +25–40%→NO +20–35%; NF-κB↓→iNOS −40–65%; Nrf2→GCH1 +15–25%+DHFR→BH4:BH2 +20–35%; ARG2 −20–35%; DDAH Cys273 preserved; BP −4–8 mmHg; FMD +2–4%.
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Science·10 June 2027·8 min read·MembersSpirulina and polyamine metabolism: ODC antizyme/AZIN1 gate, spermidine/spermine biosynthesis, SSAT catabolism, NF-kappaB-ODC transcription, AMPK-mTOR flux control, and eIF5A hypusination by DHPS
Polyamines: ODC1 PLP-dependent; OAZ1 antizyme (+1 frameshift by spermidine; proteasomal ODC degradation); AZIN1 pseudo-substrate; SRM/SMS spermidine/spermine synthases; AMD1 dcSAM; SSAT/SAT1 (NF-κB κB sites −195/−60; SKP2-CRL1 ubiquitin); PAOX/SMOX H2O2 generation; eIF5A hypusination DHPS; NF-κB→ODC promoter −330/−2300. Spirulina: NF-κB↓→ODC −20–35%; AMPK→mTORC1↓→ODC translation −20–35%; Nrf2→GSH→SMOX↓→H2O2↓→NF-κB loop↓; eIF5A hypusination −10–20%→HIF-1α/MMP-9/CCND1 translation↓.
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Science·10 June 2027·8 min read·MembersSpirulina and hypoxia/HIF signalling: PHD1/2/3 Pro-hydroxylation, VHL CRL2 K48-ubiquitin, FIH Asn803, mTORC1 HIF-1alpha translation, NF-kappaB-HIF1A axis, succinate PHD2 inhibition, and HO-1 preconditioning
HIF: HIF-1α/EPAS1/ARNT; PHD1/2/3 (Fe2+/2-OG/O2/ascorbate; Pro402/564 ODD hydroxylation); VHL CRL2 K48Ub; FIH Asn803; mTORC1→4E-BP1→HIF-1α translation; NF-κB→HIF1A κB −197 bp; NF-κB-SDH-succinate PHD2 loop; targets VEGF/EPO/LDHA/GLUT1/HO-1/PDK1. Spirulina: Fe+ascorbate→PHD2 +10–20%→HIF-1α −10–20%; AMPK→mTORC1↓→HIF-1α −20–30%; NF-κB↓→HIF1A −20–35%; VEGF −20–35%; HO-1 +25–40%.
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Science·10 June 2027·8 min read·MembersSpirulina and Notch signalling: DLL/Jagged ligands, ADAM10/17 S2 ectodomain shedding, gamma-secretase PS1/PS2 S3 cleavage, NICD/CSL/MAML transcription complex, NF-kappaB-JAG1-ADAM17 axis, and Numb K48-ubiquitination
Notch: Notch1-4/DLL1-4/JAG1-2; S2 ADAM10/17+S3 γ-secretase PS1/PS2 Asp257/385; NICD→RBPJ-MAML1→Hes1/Hey1; DLL4 VEGF-driven; JAG1 NF-κB→κB; NF-κB→ADAM17→S2; Numb (ITCH/MDM2→Numb K48Ub→Notch derepressed). Spirulina: NF-κB↓→JAG1 −20–35%+ADAM17 −20–30%; Numb +15–25%; AMPK→ABCA1→cholesterol→γ-secretase −10–20%; NICD −15–25%; Hes1 −15–25%.
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Science·10 June 2027·8 min read·MembersSpirulina and Hedgehog signalling: Patched1/Smoothened cholesterol gate, primary cilia IFT-B/IFT-A, SUFU-Gli repressor complex, Gli1/2/3 processing, NF-kappaB non-canonical Gli1 induction, and cancer EMT targets
Hedgehog: Shh/Ptch1 (cholesterol/oxysterol Smo gate); Smo (7-TM CRD; TMD; vismodegib); primary cilia (IFT-B KIF3A; IFT-A DYNC2H1); SUFU Gli repressor; Gli1/2/3 (CK1+GSK-3β+PKA→Gli3R; NF-κB→Gli1 κB site); targets PTCH1/MYC/Bcl-2/Snail. Spirulina: NF-κB↓→Gli1 −25–40% (non-canonical κB); AMPK→mTORC1↓→cilia maintenance; PCB mild Smo partial inhibition; GSK-3β Ser9→Gli3R↓; Snail −20–35%+Bcl-2 −20–30%.
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Science·10 June 2027·8 min read·MembersSpirulina and Wnt/beta-catenin signalling: Frizzled/LRP5-6, destruction complex APC/Axin/GSK-3beta/CK1alpha, beta-TrCP K48-ubiquitination, DKK1 NF-kappaB axis, TCF/LEF target genes, and intestinal stem cell LGR5
Wnt/β-catenin: Wnt/Frizzled/LRP5-6; destruction complex (Axin/APC/CK1α/GSK-3β; β-TrCP CRL1-SCF pSer33/37/Thr41→K48Ub); DVL; DKK1 (NF-κB→DKK1; LRP5/6 antagonist); TCF/LEF-Groucho; targets CCND1/LGR5/Axin2/MYC. Spirulina: AMPK→GSK-3β Ser9 +20–35%→β-catenin non-phospho +15–25%→nuclear; NF-κB↓→DKK1 −25–40%→LRP5/6 available; LGR5+ intestinal stem cells +15–25%; CCND1 +10–20%.
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Science·10 June 2027·8 min read·MembersSpirulina and fatty acid beta-oxidation: CPT1A/CPT1B malonyl-CoA gate, AMPK-ACC2 Ser221, VLCAD/MCAD/SCAD chain-length enzymes, PPAR-alpha/PGC-1alpha transcription, and mitochondrial FAD/NADH electron transfer
FAO: ACSL1/CPT1A/CPT1B (malonyl-CoA IC50 ~10–50 nM; ACC2 Ser221 AMPK; CACT); VLCAD/ACADL/LCAD; MCAD/ACADM; SCAD; HADHA/HADHB trifunctional; ETF/ETFDH; PPARα (CPT1A/ACADM/HADHB targets); ketogenesis HMGCS2/HMGCL/BDH1. Spirulina: AMPK→ACC2 Ser221 +30–45%→malonyl-CoA −30–45%→CPT1 +20–35%; AMPK→SIRT1→PGC-1α→PPARα→CPT1A +20–30%+MCAD +15–25%; riboflavin→FAD; TG −10–25%.
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Science·10 June 2027·8 min read·MembersSpirulina and the pentose phosphate pathway: G6PDH Nrf2/ARE induction, NADPH generation, TKT thiamine-dependent non-oxidative branch, ribose-5-phosphate nucleotide synthesis, and glutathione/thioredoxin redox coupling
Pentose phosphate pathway: G6PDH (G6PD; Nrf2/ARE −1.2 kb; Cys73/Cys206; AMPK→Thr406 dimerisation); 6PGD; PGLS; TKT (TPP/B1; xylulose-5-P/ribose-5-P); TALDO1; R5P→PRPP→nucleotides; NADPH circuits (GR/TXNRD1/DHFR/NOX4). Spirulina: Nrf2→G6PDH +20–35%+6PGD +15–25%; TRX1→G6PDH Cys73; AMPK→Thr406; B1 thiamine→TKT +10–20%; NADPH:NADP+ +20–30%→GSH/GSSG +25–40%; R5P +10–15%.
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Science·10 June 2027·8 min read·MembersSpirulina and autophagy/mTOR: mTORC1 Raptor/Rheb/TSC1-2, ULK1 Ser757 inhibition, AMPK Ser555 activation, VPS34/Beclin-1 nucleation, LC3-II lipidation, TFEB Ser142 nuclear translocation, and CLEAR lysosomal biogenesis
Autophagy/mTOR: mTORC1 (Raptor/Rheb/TSC1-2; ULK1 Ser757 inhibitory; S6K1/4E-BP1); ULK1 complex (Ser555 AMPK activating; ATG13/FIP200); PI3K-III/VPS34/Beclin-1 nucleation; LC3/ATG7/ATG4 elongation; TFEB Ser142 mTORC1→calcineurin nuclear. Spirulina: AMPK→Raptor Ser792+TSC2 Thr1387→mTORC1↓→S6K1 −30–45%+4E-BP1 −25–40%; ULK1 Ser555 +25–40%→LC3-II +20–35%; TFEB nuclear +20–35%→LAMP1/2 +15–25%; protein aggregates −30–45%.
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Science·3 June 2027·8 min read·MembersSpirulina and gluconeogenesis regulation: PEPCK/PCK1/PCK2, G6Pase/G6PC, FBPase/FBP1, FOXO1/PGC-1alpha/CREB transcription, AMPK suppression of hepatic glucose output, and insulin sensitisation mechanisms
Gluconeogenesis: PEPCK/PCK1 (CRE −91; FOXO1 IRE −416; GRE −467; glucagon→PKA→CREB Ser133→PCK1; FOXO1 Ser256 Akt phospho→nuclear exclusion→PCK1↓); G6PC (FOXO1/HNF4α; SLC37A4 transporter); FBP1 (Fru-1,6-P2→Fru-6-P; AMP allosteric inhibition Ki ~10 μM; Fru-2,6-P2 Ki ~1 μM; PFKFB1 insulin Ser32); CRTC2/TORC2 (SIK2 AMPK-family Ser171→cytoplasmic; glucagon→PKA→CRTC2 nuclear→CREB-CRTC2-CBP→PCK1/G6PC); PGC-1α (CREB/FOXO1 target; HNF4α coactivation); HO-1→CO→COX→ATP/AMP→AMPK→GNG. Spirulina: AMPK→GSK-3β/IRS-1→Akt→FOXO1 Ser256 +15–25%→PCK1 −15–30%+G6PC −15–25%; AMPK→SIK2 Thr175→CRTC2 Ser171+20–35%→cytoplasmic retention; Fru-2,6-P2 +15–25%→FBP1 −15–25%; HO-1→CO+COX→AMP→AMPK; HGP −10–20%; FBG −5–15%. NK: low (metformin additive; GLP-1RA complementary; glucocorticoid partial antagonism).
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Science·3 June 2027·8 min read·MembersSpirulina and thyroid hormone metabolism: TPO/NIS/thyroglobulin synthesis, T4 to T3 deiodinase DIO1/DIO2/DIO3, TRalpha/TRbeta nuclear receptor, selenium selenocysteine, Nrf2 thyrocyte protection, and iodine/selenium co-factors
Thyroid hormone metabolism: NIS/SLC5A5 (TSH→cAMP→PKA→NIS Thr49; NF-κB→NIS suppression); TG (disulphide-rich; ER PDI; Tyr MIT/DIT iodination); TPO (haem; DUOX2 H2O2-dependent; Cys369 sulfinylation→inactivation; iodination+coupling T3/T4); DIO1 (liver/kidney/thyroid; Sec133 selenocysteine; T4→T3; PTU-sensitive); DIO2 (brain/BAT; Sec133; T4→T3 local; UBC6/7 ubiquitin turnover); DIO3 (T3→T2 inactivation); TRβ1/2 (TRE DR-4/RXR; PGC-1α→UCP1/OXPHOS; LDLR; negative TSH feedback). Spirulina: Se provision (~10–100 μg/10g)→DIO1/DIO2 Sec133→T3:T4 +10–20%; rT3:T3 −10–15%; Nrf2→GPx3 +15–25%→TPO H2O2 protection→TPO +10–20%; NF-κB↓→DUOX2 −20–30%→NIS +15–30%; TRβ→PGC-1α+AMPK→mtDNA +15–25%. NK: low (levothyroxine 2h separation; anti-thyroid caution; Se upper limit 400 μg/day).
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Spirulina and complement system: classical/lectin/alternative pathways, C3/C5 convertase, MAC C5b-9, properdin/factor H regulation, CR3/CR4 opsonophagocytosis, Nrf2 complement inhibitor upregulation, and inflammatory complement dysregulation
Complement: classical (C1q NF-κB→C1QA/B/C; C1r2s2→C4b2a C3 convertase); lectin (MBL/ficolins→MASP-1/2); alternative (C3 tick-over→C3bBb; properdin CFP stabilises; factor H SCR1-4 C3b→iC3b; CFH Y402H AMD risk); C3 convertase→C3b opsonin/C5 convertase→C5a (C5aR1 Gq/Gi→NF-κB+NLRP3) + C5b→MAC C5b-9 pore; CD55/DAF (GPI; convertase decay; Nrf2/SP1/ARE); CD59 (GPI; Cys3-Cys26; C9 block; Nrf2/ARE); CR3 (CD11b/CD18; iC3b; phagocytosis). Spirulina: NF-κB↓→C1q −25–40%+C3 −15–25%+C5 −15–20%; Nrf2→CD55 +15–25%+CD59 Cys3/26 protection +20–30%; factor H +10–20% (AMPK→HNF4α→CFH; Nrf2→HS chains); MAC −20–35%; C5a-NLRP3-IL-1β −25–40%; synapse C1q-CR3 pruning −25–40%. NK: low (eculizumab complementary; avacopan additive; HCQ safe).
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Science·3 June 2027·8 min read·MembersSpirulina and caveolae/lipid rafts: caveolin-1/2/3 scaffolding, eNOS caveolae compartmentation, flotillin-1/2 raft domains, GM1/cholesterol raft composition, Nrf2/AMPK raft signalling, and receptor tyrosine kinase platform regulation
Caveolae/lipid rafts: lipid rafts (Lo phase; SM+cholesterol; GPI-anchored proteins; flotillin-1/2 FLOT1/2; Fyn/Lyn/Rac1 platforms; GM1 CTxB marker); caveolae (CAV1 21-24 kDa; CSD aa 82–101; Tyr14 Src phospho; CAV1 oligomers ×14–16; CAV3 muscle); eNOS-CAV1 (CSD clamps eNOS→CaM displaces→eNOS active; CAV1 null→eNOS uncoupling); TNFR1/TLR4 CAV1 dampening; ABCA1 cholesterol efflux (AMPK Thr1286; NF-κB suppresses ABCA1); oxysterol raft disruption (CYP27A1; 7-ketocholesterol; Nrf2/PON1). Spirulina: NF-κB↓→CAV1 +15–25% (de-repression); Nrf2→TRX1→CAV1 Cys156 palmitoylation+FLOT1/2 Cys; AMPK→ABCA1 Thr1286→cholesterol efflux +15–25%; PCB→7-ketocholesterol −20–30%; nSMase2↓→SM preserved→Lo phase +10–20%; eNOS-NO +15–25%; TLR4/NF-κB damped −15–25%. NK: low (statin complementary; omega-3 raft remodelling additive; niacin ABCA1 synergistic).
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Science·3 June 2027·8 min read·MembersSpirulina and tryptophan-kynurenine pathway: IDO1/IDO2/TDO2, KMO/kynurenine aminotransferase, quinolinic acid NAD+ synthesis, AhR/KYNA signalling, serotonin-melatonin branch, and neuroinflammation
Tryptophan-kynurenine pathway: IDO1 (NF-κB/IFN-γ→JAK1/STAT1→IDO1; haem Fe2+; Trp→N-formylkynurenine→KYN; Trp depletion→GCN2/eIF2α→T cell anergy; IDO1 Cys129 ROS-activated); IDO2/TDO2 (liver constitutive; cortisol); KMO (mitochondrial OMM; FAD; KYN→3-HK; neurotoxic route); KYNU (B6; 3-HK→3-HAA→HAAO→ACMS→QUIN); QPRT (QUIN+PRPP→NMN→NAD+); KAT I–IV (B6; KYN→KYNA; KYNA NMDA antagonist/AhR ligand); serotonin branch (TPH1/2→5-HTP→5-HT→AANAT/ASMT→melatonin). Spirulina: NF-κB↓+JAK/STAT1↓+CO→IDO1 −30–50%→KYN/Trp ratio −20–35%; Nrf2→SOD2→3-HK auto-oxidation↓→QUIN −20–35%; Nrf2/B6→KAT II→KYNA +10–20%; KYNA:QUIN ratio +30–50%; IDO1↓→Trp→TPH/5-HT preserved; melatonin +10–20%. NK: low (SSRIs complementary; IDO1 inhibitor additive; MAOI theoretical).
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Science·3 June 2027·8 min read·MembersSpirulina and matrix metalloproteinases: MMP-2/MMP-9/MMP-13 collagenase/gelatinase, TIMP-1/2/3 inhibitors, NF-kappaB/AP-1 MMP transcription, EMMPRIN/CD147, Nrf2 ECM protection, and tissue remodelling regulation
MMP biology: collagenases (MMP-1/8/13; AP-1 −48+Runx2; triple-helix collagen I/II/III); gelatinases (MMP-2 constitutive MT1-MMP; MMP-9 NF-κB κB+AP-1 −79; collagen IV/gelatin); activation cascade (MT1-MMP/TIMP-2/MMP-2 ternary; plasmin/MMP-3→MMP-9); TIMP-1 (Cys1-Cys70; NF-κB suppresses TIMP-1; Nrf2/ARE); TIMP-3 (ECM-bound; ADAM-17; Nrf2/ARE confirmed; Sorsby dystrophy); EMMPRIN/CD147 (NF-κB→BSG→stromal MMP induction; MCT1/4). Spirulina: NF-κB↓→MMP-9 −30–50%+AP-1 (AMPK→MLK3→JNK −20–35%)→MMP-13 −25–40%; Nrf2→TIMP-1 +15–25%+TIMP-3 +15–30%→ADAM-17 −20–30%; PCB Zn2+ chelation IC50 ~100–500 μM (partial); NF-κB↓→EMMPRIN −20–35%; MMP-2 −20–30%; TIMP-1:MMP-9 +30–50%; invasion −25–40%. NK: low (doxycycline additive; MTX folate caution; NSAIDs MMP-13 complementary).
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Science·3 June 2027·8 min read·MembersSpirulina and purinergic signalling: P1/A1/A2A/A2B/A3 adenosine receptors, P2X/P2Y ATP-ADP receptors, CD39/CD73 ectonucleotidases, NLRP3/P2X7 inflammasome, AMPK-adenosine axis, and nucleotide-driven immune regulation
Purinergic signalling: P1 (A1 Gi; A2A Gs→cAMP→PKA→NF-κB↓/anti-inflammatory; A2B Gs/Gq; A3 Gi mast cell↓); P2X (ATP-gated; P2X7 >100 μM ATP→K+ efflux→NLRP3; Cys116/129 disulphide; NF-κB→P2RX7; pannexin-1 pore); P2Y12 (Gi→cAMP↓→PKA↓→platelet aggregation↑; P2Y1 Gq→Ca2+); CD39/NTPDase1 (ATP→AMP; Treg/endothelial; Nrf2/ARE); CD73/NT5E (AMP→adenosine; GPI; Nrf2/ARE); ADK (adenosine→AMP; clearance). Spirulina: AMPK→AMP/adenosine→A2AR cAMP +20–30%; Nrf2→CD39 +15–25%+CD73 +15–25%→extracellular adenosine +15–25%; NF-κB↓+PCB→P2X7 −20–35%+K+ efflux↓→NLRP3-IL-1β −25–40%; Treg CD39+CD73+ +15–25%; ADP aggregation −15–25%. NK: low (P2Y12 inhibitor additive; caffeine A2AR antagonism caution; dipyridamole synergistic).
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Spirulina and unfolded protein response: IRE1alpha/XBP1s, PERK/eIF2alpha/ATF4/CHOP, ATF6 cleavage, BiP/GRP78 chaperone, Nrf2 ER stress resolution, and AMPK-UPR crosstalk
UPR: BiP/GRP78 (HSPA5; sensor sequestration IRE1α/PERK/ATF6; ER Hsp70; Nrf2/ARE+ATF4 cross-regulation; misfolded protein titration→UPR); IRE1α (Ser724/726 autophospho→RNase→XBP1 26nt splice→XBP1s bZIP→ERSE/UPRE→EDEM1/HRD1/SEC61 adaptive ERAD); PERK (eIF2α Ser51→ISR; ATF4→CHOP/DDIT3/GADD34; CHOP→BIM→caspase-9→apoptosis; CHOP→ERO1α→H2O2 amplification); ATF6 (S1P/S2P cleavage→bZIP→BiP/GRP94/PDI); ERAD (SEL1L-HRD1/SYVN1; OS-9 lectin; p97/VCP retrotranslocation). Spirulina: Nrf2→BiP +20–35% (chaperone capacity→threshold↑); AMPK→GADD34/PP1→eIF2α dephospho recovery+CO→PERK −10–20%→CHOP −25–40%; IRE1α→XBP1s+EDEM1 +15–25%; Nrf2→PDI/PSMB5→ERAD +15–25%; apoptosis −30–45%. NK: low (TUDCA complementary; bortezomib myeloma caution).
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Science·3 June 2027·8 min read·MembersSpirulina and ceramide/sphingolipid metabolism: CerS1-6 de novo synthesis, sphingomyelinase/salvage pathway, S1P/SphK1-2, CERT ceramide transfer, Nrf2/CerS regulation, and ceramide apoptosis vs S1P survival balance
Ceramide/sphingolipid: de novo (SPT SPTLC1/2→sphinganine→CerS1-6 (chain length: CerS1 C18 pro-apoptotic; CerS2 C22-C24 hepato-protective; CerS5/6 C14-C16 pro-inflammatory)→DEGS1→ceramide); SM hydrolysis (nSMase2/SMPD3 NF-κB-driven; aSMase/SMPD1 lysosomal); ceramide→PP2A→Akt dephospho→apoptosis; S1P (SphK1 Thr193 ERK2→S1P; S1PR1 Gi→PI3K→Akt/eNOS; survival); CERT (ER→Golgi ceramide; START Cys→TRX1). Spirulina: NF-κB↓→SMPD3 −25–40%+PCB nSMase2 Cys→ceramide −20–35%; AMPK→SphK1 Thr193+Nrf2→TRX1 Cys89→S1P +15–25%; Nrf2→CerS2 +10–20%+NF-κB↓→CerS6 −15–25%→CerS2:CerS6 ratio +15–30%; CERT START Cys protection→SM maintained; apoptosis −25–40%. NK: low (fingolimod S1PR compatible; anthracycline caution).
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Science·3 June 2027·8 min read·MembersSpirulina and glycogen metabolism: GS/GP allosteric regulation, AMPK/GSK-3beta phosphorylation, glycogenin GYG1 primer, liver G6PC/GYS2 vs muscle GYS1/PYGM, UDPG substrate, and glycogen storage diseases
Glycogen metabolism: GS (GYS1/GYS2; UDPG; Ser641 GSK-3β inactivating phospho; allosteric G6P activation; PP1-PTG Ser641 dephospho→active); GP (PYGL/PYGM/PYGB; PLP; GPa Ser14 PhK phospho active; GPb inactive; allosteric AMP/glucose); GBE1/AGL; insulin (GSK-3β Ser9→GS active; PP1→GPb); glucagon (PKA→PhK→GPa; GS Ser7 phospho→inactive); AMPK (γ-CBM glycogen sensor; GS Ser7 phospho; MFF Ser155; GSK-3β Ser9 context-dependent). Spirulina: AMPK→GSK-3β Ser9 +20–35%→GS Ser641 dephospho +15–25%→GS activity; AMPK→PP1→GPa Ser14 dephospho→GPb (glycogenolysis −10–15%); PCB GP AMP-site partial inhibition IC50 ~500–2000 μM (−10–20%); Nrf2→TRX1→GYG1 Tyr194 protection; AMPK→G6PC −10–20% (FOXO1/CREB); liver glycogen +10–20%; FBG −5–15%; HGP −10–20%. NK: low (metformin additive; insulin secretagogue hypoglycaemia caution).
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Science·27 May 2027·8 min read·MembersSpirulina and hexosamine pathway/O-GlcNAc: GFAT1 rate-limiting step, OGT/OGA cycling, AMPK–GFAT1 flux reduction, NF-κB p65/IRS-1/FOXO1 O-GlcNAcylation, Nrf2-OGA Cys protection, and diabetic vascular O-GlcNAc excess
Hexosamine/O-GlcNAc: HBP: GFAT1 (Fru-6-P+Gln→GlcN-6-P; rate-limiting; AMPK Ser243 phospho-inhibition ~30–50%↓; UDP-GlcNAc product feedback); GNPNAT1/PGM3/UAP1→UDP-GlcNAc; OGT (nuclear/cytoplasmic; >5000 substrate Ser/Thr; X-chr); OGA/MGEA5 (β-hexosaminidase; neutral; Cys610 H2O2-sensitive→TRX1 protection; OGA putative Nrf2/ARE); NF-κB p65 Thr305+Ser311 O-GlcNAc→p65 nuclear accumulation/IKKβ↓; IRS-1 Ser1101 O-GlcNAc→insulin resistance; FOXO1 O-GlcNAc→gluconeogenesis G6PC/PCK1; Nup98 O-GlcNAc→NPC FG-Nup; tau Ser400 O-GlcNAc protective vs phospho (competing); PECAM/VCAM-1 O-GlcNAc hyperglycaemia-driven NF-κB. Spirulina: AMPK→GFAT1 Ser243 −25–40%→UDP-GlcNAc −15–25%→total O-GlcNAcylation −15–25%; p65 Thr305 O-GlcNAc −20–30%; IRS-1 Tyr612 phospho +15–25%; Nrf2→OGA Cys610 protection→cycling preserved; HOMA-IR −10–20%; VCAM-1 hyperglycaemic −25–40%. NK: low (OSMI-1 OGT inhibitor additive; metformin AMPK complementary; GLP-1RA complementary).
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Science·27 May 2027·8 min read·MembersSpirulina and natural killer cell biology: NKG2D/MICA ligand, NKG2A/HLA-E inhibitory axis, perforin/granzyme B cytotoxicity, ADCC/CD16/FcγRIIIA, AMPK NK metabolic fitness, and Nrf2 perforin redox protection
NK cell biology: CD56brightCD16lo (cytokine IFN-γ/TNFα; IL-12/IL-18 responsive) vs CD56dimCD16hi (cytotoxic; ADCC); NKG2D (KLRK1; DAP10/12 ITAM/YINM; MICA/MICB/ULBPs stress ligands; Nrf2/ARE in MICA/MICB NF-κB-driven shedding→soluble MICA decoys); NKG2A (KLRC1; CD94 heterodimer; ITIM×2; SHP-1/2→Lck/ZAP70↓; HLA-E NF-κB-driven); KIR inhibitory (ITIM; HLA-A/B/C); CD16/FcγRIIIA (ADCC; IgG-coated targets; Cys27-Cys49 disulphide); perforin PFN1 (Cys73-Cys104 disulphide; MACPF pore; Ca2+-dependent; TRX reduces for active form); granzyme B (Asp-specific serine protease; Cys226; BID/caspase-3/ICAD cleavage); NK survival NF-κB→BCL-2/BCL-XL; IL-15→JAK3/STAT5. Spirulina: Nrf2→TRX1→perforin Cys73/Cys104 +15–25%→lytic units; NF-κB↓→HLA-E −15–25%→NKG2A disinhibition+sMICA −20–30%→NKG2D ligation; AMPK→FAO OXPHOS→memory-like NK metabolism; ADCC +10–20%; granzyme B activity maintained. NK: low (IL-2 cytokine additive NK expansion; rituximab ADCC synergistic; NK exhaustion checkpoint PD-1).
Read article- Science·27 May 2027·8 min read·Members
Spirulina and dendritic cell biology: cDC1/cDC2/pDC subsets, TLR/MyD88/IRF7 innate sensing, AMPK metabolic reprogramming, Nrf2/HO-1 tolerogenic polarisation, IDO1/PD-L1 immune checkpoint, and Treg induction
DC biology: cDC1 (CLEC9A+/XCR1+; IRF8; cross-presentation MHC-I→CTL; IL-12p70); cDC2 (CD11b+/SIRPα+; IRF4; Th2/Th17; Dectin-1 CARD9); pDC (SIGLEC-H+/BST2+; TLR7/9→MyD88→IRAK4→TRAF6→IRF7 Ser477/479 IKKα→IFN-α burst; BDCA-2 inhibitory Syk→PI3K→IRF7↓); DC maturation (NF-κB→CD80/CD86/CD40/IL-12/CCR7); tolerogenic DC (HO-1→CO→NF-κB↓→IL-12↓+IL-10+; IDO1 Trp→Kyn→AhR→Foxp3; PD-L1/B7-H1→PD-1 T cell suppression); AMPK metabolic (OXPHOS tolerogenic vs glycolysis Warburg immunogenic). Spirulina: NF-κB↓→IL-12p70 −30–50%+CD80 −20–35%; Nrf2→HO-1 +25–40%+IDO1 +20–30%+PD-L1 +15–25%→tolerogenic shift; AMPK→mTORC1↓→HIF-1α↓→OXPHOS dominant; PCB→TLR9/UNC93B1↓→pDC IFN-α −25–40%; Foxp3+ Treg +20–35%; Th17/Th1 −20–35%. NK: low (vitamin D3 synergistic tolerogenic; rapamycin mTOR additive; anti-PD-L1 checkpoint antagonism caution oncology).
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Science·27 May 2027·8 min read·MembersSpirulina and steroidogenesis: StAR/CYP11A1 cholesterol import, CYP17A1/CYP21A2/CYP11B1-B2 hydroxylation, DHEA/DHEAS adrenal synthesis, FDX1/FDXR electron relay, Nrf2 adrenocortical protection, and cortisol/aldosterone biosynthesis
Steroidogenesis: StAR/STARD1 (Ser57 PKA; SF-1/NR5A1 promoter; NF-κB competes SF-1 binding→StAR↓; cholesterol OMM→IMM channel); CYP11A1 (IMM; FDX1 [2Fe-2S]-FDXR FAD electron relay→pregnenolone; ACTH/MC2R→Gs→cAMP→PKA→SF-1→CYP11A1); CYP8B1/HSD3B2 (NAD+; NF-κB suppresses); CYP21A2 (21-hydroxylase microsomal; P450 oxidoreductase/POR; CAH loss); CYP11B1 (cortisol; mitochondrial FDX1 relay); CYP11B2 (aldosterone synthase; 18-hydroxylase/18-methyloxidase; zona glomerulosa); CYP17A1 (lyase CYB5A Nrf2/ARE; DHEA production); DHEAS (SULT2A1 sulfotransferase); StAR Ser57 ACTH→PKA cascade. Spirulina: Nrf2→FDX1 [2Fe-2S] protection+FDXR FAD (riboflavin)→CYP11A1/B1/B2 electron relay preserved; AMPK→StAR Ser57 +15–25%→cholesterol import +10–20%→pregnenolone +10–20%; NF-κB↓→CYP11A1 promoter recovery +15–25%+HSD3B2 +10–20%; Nrf2→CYB5A→CYP17A1 lyase→DHEA +5–15%; adrenal 4-HNE −25–40%. NK: low (metyrapone/ketoconazole CYP11B1 caution; licorice 11β-HSD2 independent; DHEA supplement additive).
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Science·27 May 2027·8 min read·MembersSpirulina and coagulation cascade: TF/FVIIa extrinsic pathway, thrombin/fibrin/FXIIIa, thrombomodulin/protein C/APC anticoagulant, PAI-1/tPA fibrinolysis balance, Nrf2/THBD vascular protection, and NF-κB TF expression
Coagulation: TF/F3 (κB site; NF-κB→monocyte/endothelial TF expression; TF Cys186-Cys209 decryption PDI-S-NO); TF-FVIIa extrinsic→FXa/FVa prothrombinase→thrombin (IIa) FpA/FpB fibrinopeptide cleavage→fibrin polymerisation→FXIIIa Gln-Lys crosslinks; TFPI (Kunitz Lys15-Arg17; TF-FVIIa-FXa quench); thrombomodulin THBD (Nrf2/ARE; NF-κB suppresses; EGF-like domain binds thrombin→PC→APC+PS→FVa/VIIIa cleavage); PAI-1/SERPINE1 (NF-κB κB site; SMAD3; PAI-1→tPA/uPA inhibition→fibrinolysis↓; tPA PLAT Nrf2/ARE); PAR2 (TF:FVIIa→PAR2 Gq→IL-6/IL-8/NF-κB amplification). Spirulina: NF-κB↓→TF mRNA −30–50%+monocyte surface TF −25–40%; Nrf2→TM/THBD +15–25%; NO→PDI SNO→TF crypticity maintained; PAI-1 −25–35%; tPA/PAI-1 ratio +20–35%; APC generation +15–25%; fibrin clot lysis +15–25%. NK: low (warfarin/DOAC: no CYP2C9 interaction; aspirin additive antiplatelet; TF-targeted anticoagulant pathway preserved).
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Science·27 May 2027·8 min read·MembersSpirulina and uric acid/xanthine oxidase: XOR Mo-pterin/FAD/Fe-S cofactors, XDH→XO conversion, URAT1/ABCG2 urate transport, NLRP3/IL-1β gout, Nrf2 XOR redox regulation, and hyperuricaemia management
Uric acid/XOR: XOR (Mo-pterin cofactor+2×[2Fe-2S]+FAD; XDH dehydrogenase↔XO oxidase conversion by Cys535/992 disulphide oxidation or trypsin cleavage Arg335; XO+O2→O2•−+H2O2; XDH+NAD+→NADH; NF-κB→XOR promoter; ischaemia-reperfusion XO burst); purine catabolism (adenosine→IMP→hypoxanthine→xanthine→urate); URAT1/SLC22A12 (renal tubular urate reabsorption; OAT10; benzbromarone/probenecid target); ABCG2 (Q141K low-excretion SNP; AMPK Ser401→PM trafficking→urate secretion); MSU crystals→NLRP3 (cholesterol-like; K+ efflux; IL-1β mature). Spirulina: PCB weak XO inhibition IC50 ~200–500 μM+Nrf2→TRX1→Cys535/992 reduction→XDH form↑; Nrf2→SOD1/2→O2•− scavenging; NF-κB↓→XOR −20–30%; AMPK→ABCG2 Ser401→FEuric +10–20%; NLRP3-IL-1β −35–55%; serum UA −10–20%. NK: low (allopurinol/febuxostat additive; probenecid complementary; colchicine anti-gout additive).
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Science·27 May 2027·8 min read·MembersSpirulina and mast cell degranulation: FcεRI/IgE/Lyn/Syk ITAM signalling, PLCγ2/IP3/SOCE calcium flux, histamine/tryptase/LTC4 mediators, cAMP/PKA SNAP-23 anti-degranulation, and AMPK mast cell stabilisation
Mast cell degranulation: IgE/FcεRI (α-IgE binding; β ITAM MS4A2 NF-κB; γ ITAM ITAM×2)→Lyn Tyr394→Syk Tyr319/493→LAT Tyr132/191→PLCγ2→IP3/DAG→SOCE ORAI1/STIM1→[Ca2+]i→SNARE (VAMP7/8+SNAP-23+syntaxin-4)→granule exocytosis; histamine (H1R/H4R; itch/bronchoconstriction); tryptase (PAR-2→TH2/NF-κB); LTC4 (5-LOX/FLAP/LTC4S Cys30; cysLT1R→bronchospasm); PGD2 (COX-1/PGDS→DP1/2); cAMP/PKA (PDE3/PDE4; SNAP-23 Ser95 phospho→exocytosis↓); AMPK→SNAP-23 Ser95→cAMP↑. Spirulina: NF-κB↓→FcεRI β MS4A2 −20–35%→surface FcεRI −15–25%; PCB→Syk Tyr319 −15–25%+PLCγ2 −15–20%+[Ca2+]i SOCE −20–30%; AMPK→PDE3/4↓→cAMP +20–35%→PKA→SNAP-23 Ser95; Nrf2→LTC4S Cys30; histamine −25–45%; LTC4 −20–35%. NK: low (ketotifen/cromolyn complementary; montelukast additive; anti-IgE omalizumab compatible).
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Science·27 May 2027·8 min read·MembersSpirulina and bile acid signalling: CYP7A1/FXR/SHP cholesterol catabolism, TGR5-GLP-1 enteroendocrine axis, NTCP/BSEP hepatic transport, Nrf2/MRP2 efflux protection, gut microbiome BSH/7α-dehydroxylation, and hepatoprotection
Bile acid signalling: CYP7A1 (rate-limiting; κB site NF-κB suppression; FXR→SHP→LRH-1/HNF4α↓; FGF15/19 ileal→FGFR4→JNK/ERK→CYP7A1↓); CYP8B1/CYP27A1/BAAT; NTCP/SLC10A1 hepatic uptake; BSEP/ABCB11 (Nrf2/ARE candidate); MRP2/ABCC2 (Nrf2/ARE; phase II efflux); FXR/NR1H4 (SBE IR-1; BSEP/FGF15/SHP); TGR5/GPBAR1 (Gs→cAMP→PKA; L-cell GLP-1 secretion; BAT DIO2; macrophage NF-κB↓); gut BSH (Lactobacillus/Bifidobacterium→deconjugated BA; Clostridium scindens 7α-dehydroxylase→DCA/LCA; UDCA anti-apoptotic HCO3−). Spirulina: NF-κB↓→CYP7A1 κB recovery +15–30%; Nrf2→MRP2 +15–25%+BSEP +10–20%; prebiotic BSH Lactobacillus ×1.3–1.8→UDCA +15–25%→TGR5-GLP-1; DPP-4 −10–20%→active GLP-1 +5–15%; ALT −15–25%; 7α-HCO −10–20%. NK: low (UDCA additive liver; GLP-1RA complementary; FXR agonist additive).
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Spirulina and heat shock proteins: HSP90/CDC37 client chaperoning, HSP70/DNAJ/BAG co-chaperone network, HSP27 actin dynamics, HSF1 trimerisation/SIRT1 activation, CHIP/BAG3 triage, and proteotoxic stress resilience
HSP biology: HSP90 (client proteins IKKβ/HIF-1α/JAK2/RAF1/EGFR; co-chaperones AHA1 ATPase stimulator/p23/CDC37/HOP TPR; Cys521 mild PCB modification); HSP70/HSPA1A (NBD ATPase+SBD substrate; DNAJB1 J-domain→ATPase activation; BAG1/3 NEF; HSPA1A ARE→Nrf2; anti-apoptotic AIF/Apaf-1/BAX sequestration); HSP27/HSPB1 (sHSP oligomers; phospho Ser15/78/82 MK2→small oligomers; actin-capping anti-apoptotic; HSPB1 ARE Nrf2; Cys137 S-glutathionylation→oligomer shift); CHIP/STUB1 (U-box E3+TPR→HSP70/90→UPS routing); BAG3 (PQC autophagy routing; CASA complex). Spirulina: Nrf2→HSPA1A +25–40%+HSP27 +20–35%+HSP27 Cys137 protection; AMPK→SIRT1→HSF1 Lys80 deacetylation→trimer nuclear +15–25%; NF-κB↓→HSP90α −15–25% client turnover; CHIP↑→IKKβ/HIF-1α turnover −15–25%; caspase-3 −30–45%. NK: low (geldanamycin/17-AAG additive HSP70 induction; NF-κB inhibitors complementary).
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Spirulina and ubiquitin-proteasome system: E1/E2/E3 cascade, CRL3-Keap1/Nrf2 K48-ubiquitination, IκBα β-TrCP degradation, 26S proteasome Rpn6/AMPK assembly, DUB deubiquitinase regulation, and proteostasis
UPS: E1 (UBA1; Cys204 thioester)/E2 (~40 human UBCs)/E3 (>600; RING CUL3-Keap1-RBX1; HECT; RBR HOIP/LUBAC); 26S (20S barrel β1/β2/β5 proteolytic Thr active sites; 19S lid Rpn11 JAMM DUB/base Rpt1-6 AAA-ATPase; 26S AMPK→Rpn6 Ser14→assembly); DUBs (USP Cys-His; CYLD/USP15 K63-deTRIM25; Rpn11 JAMM Zn2+); CRL3-Keap1: Nrf2 Neh2 DLG/ETGE→Keap1 Kelch×2→Lys50/52/53 K48Ub→26S (t½ ~20 min basal); IκBα pSer32/36 DSGxxS→β-TrCP→K48Ub→26S; AMPK→Rpn6 Ser14→26S +15–25%. Spirulina: PCB→Keap1 Cys151→CRL3 disruption→Nrf2 K48Ub↓→t½ ×2–3; AMPK→GSK-3β Ser9→β-TrCP Nrf2 phospho-degron↓; Nrf2→PSMB5/β5 +20–30%+PSMA3; AMPK→Rpn6 Ser14→26S +15–25%; IκBα +25–40%; aggregated protein −30–45%; CYLD/USP15 DUB preservation. NK: low (bortezomib/carfilzomib oncology caution; chloroquine complementary).
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Science·20 May 2027·8 min read·MembersSpirulina and microglia neuroinflammation: M1/M2 polarisation, TREM2/DAP12 phagocytosis, TLR4/NF-κB/NLRP3 activation, Nrf2/HO-1 neuroprotection, complement C1q/C3/CR3 synaptic pruning, and phycocyanin BBB penetration
Microglial biology: homeostatic (P2RY12+TMEM119+CX3CR1+SALL1+); M1 (TLR4→NF-κB→iNOS/COX-2/TNFα/IL-1β/IL-12/NOX2; IFN-γ→STAT1); NLRP3 (NF-κB priming; Aβ→cathepsin B lysosomal→K+ efflux→NLRP3→ASC→caspase-1→IL-1β/IL-18→gasdermin D pyroptosis); TREM2/DAP12 (ITAM→Syk→PI3K→Akt→mTORC1→glycolysis/phagocytosis; DAM signature; ADAM10/17 shedding NF-κB-driven→sTREM2); complement (C1q NF-κB→C3b opsonisation→CR3 microglial synapse pruning; CFH). Spirulina: NF-κB↓→IL-1β −35–55%+TNFα −30–50%+NLRP3 −30–45%+C1q −25–40%; PCB→microglial Keap1→Nrf2→HO-1 +30–50%+IL-10 +20–35%; AMPK→TFEB→TREM2 metabolism (shedding −20–30%+Aβ phagocytosis +15–25%); synapse loss −20–30%. NK: low (minocycline additive; MCC950 complementary; anti-Aβ compatible).
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Science·20 May 2027·8 min read·MembersSpirulina and mitochondrial fission-fusion dynamics: DRP1/Fis1/Mff/MiD49-51, MFN1/MFN2/OPA1, AMPK→MFF phosphorylation, PINK1-Parkin DRP1 Ser616, cristae remodelling, and mitochondrial network quality control
Mito dynamics: DRP1 (PTMs: CDK1/CDK5/ERK Ser616 pro-fission; PKA Ser637 anti-fission; SNO Cys644; adaptor MFF Ser155/172 AMPK; Fis1; MiD49/51 tethering); MFN1/2 (OMM GTPase; CC2 tethering→GTP hydrolysis→fusion; MFN1 Cys684/694 S-glutathionylation→fusion arrest; MFN2 Cys684 SNO cardioprotection; PINK1-Parkin MFN2 Thr111/Ser442→Ub→degradation→fission); OPA1 (IMM GTPase; L-OPA1 ΔΨm-dependent→OMA1 cleavage→S-OPA1; cristae junction Cys418 TRX2; cytochrome c retention). Spirulina: AMPK→MFF Ser155 +25–40%+PKA Ser637 +15–25%→DRP1 Ser616/637 balance −15–25% pro-fission ratio; NF-κB↓→CDK5→Ser616 −20–30%; Nrf2→TRX1/Grx1→MFN1 Cys684 −20–30%+TRX2→OPA1 Cys418; ΔΨm maintenance (Nrf2-ISC)→OMA1 inactive→L-OPA1 stable +10–20%; fragmentation −20–35%; cytochrome c −20–35%. NK: low (MitoQ/metformin complementary; CsA anti-fragmentation additive).
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Science·20 May 2027·8 min read·MembersSpirulina and pulmonary surfactant: SP-A/B/C/D collectins, DPPC/PG lamellar body synthesis, ABCA3/NKX2.1/TTF1, AMPK lamellar body biogenesis, Nrf2 type II pneumocyte protection, and surfactant dysfunction in ARDS/RDS
Pulmonary surfactant: ~90% lipid (DPPC 40–45%; PG 10%; cholesterol)+10% protein; AT2 lamellar body synthesis (ABCA3 lipid import; LB exocytosis→tubular myelin→surface film); SP-A (collectin; CRD lectin; TLR4 modulation; Cys6 N-terminal; SFTPA NF-κB site); SP-B (8 kDa amphipathic; essential; Cys11-Cys35/Cys48-Cys60; NAPSIN A); SP-C (TM helix palmitoylated Cys5/6; SFTPC-L188Q ER stress); SP-D (collectin; Cys15 dodecamer; influenza HA binding); NKX2.1/TTF-1 SFTPA/B/C/D master TF; CASP14 Nrf2/ARE AT2; TFEB CLEAR→LB biogenesis. Spirulina: Nrf2→AT2 NQO1/HO-1/SOD2→4-HNE −25–40%+8-OHdG −20–35%+AT2 apoptosis −25–40%; SP-B mRNA recovery (Nrf2-ARE) +25–40%; NF-κB↓→TNFα/IL-1β→TTF-1 competition −30–50%→SP-C +15–30%; AMPK→TFEB→LAMP3+ABCA3 Cys protection→LB +15–25%; DPPC secretion +10–20%; SP-D Cys15 integrity (TRX1). NK: low (NAC additive; corticosteroids complementary; sildenafil mild cGMP).
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Science·20 May 2027·8 min read·MembersSpirulina and hepatic stellate cells: TGF-β/SMAD3/αSMA activation, PDGF-Rβ proliferation, PPAR-γ quiescence, VDR/vitamin D anti-fibrotic signalling, HO-1/Nrf2 stellate cell protection, and liver fibrosis reversal
HSC biology: quiescent (lipid droplets LRAT/DGAT1; PPAR-γ high; VDR high; αSMA low); TGF-β1 (ALK5/TβRII→SMAD2/3 Ser465/467+Ser423/425→SMAD4 nuclear→SBE→ACTA2/COL1A1/CTGF/PAI-1; PPAR-γ TGF-β→SMAD3→PPARG↓); PDGF-Rβ (PDGFR-B Tyr740/751→PI3K-Akt-mTORC1→HSC proliferation; Tyr716→Grb2-ERK; Cys842 redox activation); VDR (quiescent HSC high; VDR-SMAD3 MH2 competitive displacement→SBE↓; CYP27B1 1,25(OH)2D3); HO-1→CO→cGMP→PKG→SMAD3 Thr179. Spirulina: NF-κB↓→TGFB1 −30–45%+PDGF-BB −25–35%; PCB→ALK5 −20–30%; HO-1 CO→SMAD3 Thr179↓→αSMA −30–50%+COL1A1 −35–50%; AMPK→PPAR-γ+GLA→PPAR-γ agonism +15–30%; VDR +15–25%+CYP27B1 Nrf2; hydroxyproline −30–45%; fibrosis score −30–50%. NK: low (pirfenidone additive; VitD3 synergistic).
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Science·20 May 2027·8 min read·MembersSpirulina and skin barrier keratinocyte biology: FLG/loricrin/involucrin/cornified envelope, caspase-14/LEKTI/SPINK5/KLK5, Nrf2 terminal differentiation, Th2 IL-4/IL-13 FLG suppression, and transepidermal water loss
Skin barrier: CE (FLG profilaggrin→CASP14+calpain→FLG monomers→NMF; LOR 80% CE mass TGM1/3 crosslinks; IVL; ABCA12 LB lipid; Nrf2/ARE: LOR/IVL/CASP14/ABCA12); SPINK5/LEKTI (Kazal-type; pH-sensitive KLK5 inhibitor; Netherton SPINK5 loss→barrier destruction); Th2 FLG suppression (IL-4/IL-13→JAK1/3→STAT6 Tyr641→SFTPA/SFTPB→FLG/LOR↓; TSLP NF-κB→pDC→Th2 priming; PAR-2 KLK5→TSLP). Spirulina: Nrf2→LOR +20–30%+IVL +15–25%+CASP14 +15–20%+NMF +10–20%; NF-κB↓→TSLP −30–50%+IL-33 −25–40%; AMPK→JAK1 Ser515↓→STAT6↓→FLG recovery +20–35%; AMPK→CerS3+GLA→SC ceramide +10–20%; SPINK5/KLK5 ratio +15–25%; TEWL −15–25%. NK: low (dupilumab complementary; JAK inhibitors additive; TCS compatible).
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Science·20 May 2027·8 min read·MembersSpirulina and nuclear pore complex: FG-Nups/importin-α/β/CRM1/Ran-GTP gradient, Nrf2 nuclear import/Keap1 retention, NF-κB p65 nuclear exclusion, KPNB1/TNPO1 transport receptors, and nucleoporin O-GlcNAc regulation
NPC: ~30 Nups ×8 (scaffold Nup155/93/205; FG-Nups Nup62/58/54 channel+Nup98/214+Nup153; transmembrane Nup210/Ndc1); importin-α (KPNA1-7 cNLS; IBB; KPNA4 for Nrf2); importin-β KPNB1; CRM1/XPO1 (NES LxxLxL; Cys528 LMB site); RanGAP1 (SUMO; Nup358; Ran-GTP→GDP cytoplasm; RanGAP1 Cys358 H2O2-sensitive); Nuf98 O-GlcNAc-OGT. Spirulina: Nrf2 nuclear +20–35% (PCB→Keap1; AMPK→GSK3β Ser9→Nrf2 Ser335/338↓→t½↑; KPNA4 ARE→positive feedback); I-κBα/NFKBIA +30–50% (Nrf2-ARE→IκBα resynthesis)→p65 nuclear dwell −25–40%; RanGAP1 Cys358 protection (TRX1); FG-Nup Cys S-glutathionylation −20–30%; CRM1 mild Cys528 modification→TNFα mRNA nuclear retention +10–20%. NK: low (selinexor non-competing; glucocorticoid additive).
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Science·20 May 2027·8 min read·MembersSpirulina and endosome trafficking: Rab5/EEA1 early endosome, Rab7/RILP late endosome/lysosome, Rab11 recycling, ESCRT/MVB biogenesis, clathrin-mediated endocytosis, and endosomal TLR signalling
Endosomal trafficking: CME (AP2/EPS15/dynamin); Rab5 (EEA1/PI3P; CCZ1-MON1 GEF→Rab7 maturation); Rab7 (RILP→dynein perinuclear; FYCO1 kinesin; Rab7-GAP TBC1D15); ESCRT-0/I/II/III/VPS4→ILV inward budding→MVB; Rab11 recycling (EGFR/TfR; FIP3; cytokinesis); TFEB (mTORC1 Ser142; AMPK→calcineurin→nuclear; CLEAR: LAMP1/2/CTSD/ATP6AP2/MCOLN1); endosomal TLRs (TLR9 UNC93B1→endosome; TLR9→MyD88→IRAK4→IRF7→IFN-α; TLR7 pDC; NF-κB→UNC93B1); exosome nSMase2/ceramide NF-κB-driven. Spirulina: NF-κB↓→TLR9/UNC93B1 −20–30%→IFN-α −25–40%; TFEB nuclear +20–35%→LAMP1/2 +15–25%+CTSD +15–20%; Nrf2→TRX1→Rab5 Cys84+Rab7 Cys54/124; nSMase2 −20–30%→exosomal HMGB1 −20–30%. NK: low (HCQ complementary; mTOR additive).
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Science·20 May 2027·8 min read·MembersSpirulina and selective autophagy: p62/SQSTM1 Keap1-Nrf2 axis, PINK1-Parkin mitophagy, NIX/BNIP3L hypoxic mitophagy, NDP52/TAX1BP1 xenophagy, LIR-LC3 docking, and mTORC1/AMPK autophagy induction
Selective autophagy: SARs (LIR W/F/Y-xx-L/I/V; LC3/GABARAP hydrophobic pocket); p62/SQSTM1 (PB1/ZZ/KIR Ser349/UBA; KIR→Keap1 sequestration→Nrf2; ARE in SQSTM1→positive feedback); PINK1-Parkin (PINK1 OMM accumulation at ΔΨm↓; Ub Ser65 pUb→Parkin activation; Parkin E3→TOMM20/VDAC1/MFN1/2 K48/K63→optineurin/NDP52 LIR→mitophagy); NIX/BNIP3L (HIF-1α; LIR WVEL Ser81 phospho; PINK1-independent receptor; erythroid mitochondria extrusion); NDP52 CALCOCO2 (SKICH; Gal3-xenophagy; CALC02 ARE→Nrf2). Spirulina: Nrf2→SQSTM1 +30–50%→p62 flux ×1.5–2.0; AMPK→ULK1 Ser555→mitophagy +25–40%; NIX +10–20% (HO-1-CO-HIF); NDP52 +20–35%; protein aggregates −30–45%; DAMP −20–35%. NK: low (HCQ late-stage caution; bortezomib oncology).
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Science·20 May 2027·8 min read·MembersSpirulina and Rho GTPase signalling: RhoA/ROCK/LIMK/cofilin, Rac1/PAK/Arp2-3/lamellipodia, Cdc42/WASP/filopodia, GEF/GAP/GDI cycle, and NF-κB/Nrf2 cytoskeletal regulation
Rho GTPases: GDP/GTP cycle (GEF DH-PH; GAP 10^5-fold GTPase; GDI cytoplasmic sequestration; CAAX geranylgeranylation); RhoA→ROCK1/2→(1) MLC20 Ser19 contractility; (2) LIMK1/2 Thr508→cofilin Ser3 F-actin; (3) MYPT1 Thr696 MLCP inhibition; mDia1 linear actin; Rac1→PAK1/2→LIMK+WAVE2/Arp2-3→lamellipodia; Cdc42→WASP/N-WASP→Arp2-3→filopodia; GEF-H1/LARG/NET1 NF-κB-driven; Rac1 Cys18 oxidation→NOX2 constitutive→ROS loop. Spirulina: AMPK→ARHGAP→RhoA-GTP −15–25%+GEF-H1 Ser885→ROCK −20–30%→MLC20 Ser19 −15–25%→vasodilation; NF-κB↓→LARG/NET1 −20–35%; Nrf2→TRX1→RhoA Cys16/Rac1 Cys18 −20–30%; PCB→Rac1-NOX2 O2•− −20–30%; TEER improvement −25–40%. NK: low (statins/ROCK inhibitors additive).
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Science·20 May 2027·8 min read·MembersSpirulina and integrin signalling: αβ heterodimer activation states, FAK/Src/paxillin focal adhesion kinase cascade, ILK/talin/vinculin Cys redox, NF-κB VCAM-1/ICAM-1 adhesion suppression, and AMPK-RhoA-eNOS vasodilation
Integrin biology: 24 αβ heterodimers; bent-closed/extended-closed/extended-open states; inside-out (talin FERM F3→β NPxY+kindlin-3 FERMT3→αIIbβ3 activation); outside-in (FAK PTK2 Tyr397 autophosphorylation→Src Tyr416→FAK Tyr576/577→paxillin Tyr118/Grb2/PI3K); ILK pseudo-kinase ANKR Cys Zn2+; vinculin VH-VT autoinhibited Cys154/164; talin Cys2440. Spirulina: NF-κB↓→VCAM-1 −35–55%+ICAM-1 −25–40%+ITGAV −20–30%; Nrf2→TRX1→talin Cys2440+vinculin Cys154/164→FA stability +15–25%; AMPK→paxillin Ser83+ARHGAP→RhoA↓+ROCK↓→eNOS disinhibition; NF-κB↓→FN1 −20–30% (inflammatory); wound closure +20–30%. NK: low (statin/anti-integrin additive; wound healing).
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Science·13 May 2027·8 min read·MembersSpirulina and retinoic acid/RAR: retinol/LRAT/RALDH retinoid metabolism, RAR-α/β/γ LBD, RXR heterodimerisation, RARE DR5/DR2, NCoR/SMRT corepressor exchange, and Nrf2-RAR antioxidant axis
Retinoid metabolism: β-carotene→BCO1→retinal→RDH10→retinol→LRAT (retinyl ester)→RPE65 or→RALDH1/2/3 (ALDH1A1/2/3; NAD+; Cys302 catalytic; Nrf2/ARE ALDH1A2)→atRA; CYP26A1/B1 RA hydroxylation (RARE autoregulated); CRABP2→RAR/RXR; RAR α/β/γ (NR1B; LBD AF-2 H12; NCoR1/SMRT/HDAC3 corepressor; SRC-1/2/3+p300 coactivator); RXR α/β/γ obligate heterodimer; RARE DR5/DR2; RAR targets: RARB tumour suppressor; CDH1 E-cadherin; CYP26A1; FOXO3a; RAR↔NF-κB reciprocal antagonism (RAR LBD→p65↓; NF-κB IKK→RAR Thr47/Ser77-ITCH-Ub→RAR↓). Spirulina: β-carotene 17–40 mg/10g→retinol +10–25% (BCO1 competent); Nrf2→TRX→RALDH Cys302+ALDH1A2 +15–25%→RA; NF-κB↓→RAR stability +15–25%→RARB +15–25%+CDH1 +10–20%; AMPK→SIRT1→NCoR1 export→RAR derepression; AMPK→CYP26A1↓→RA t½↑; RXRα-PGC-1α coactivation; retinol +10–25%. NK: moderate (isotretinoin additive retinoid; ATRA-APL supportive; BCO1 polymorphism).
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Science·13 May 2027·8 min read·MembersSpirulina and glucagon signalling: GCGR/Gs/cAMP/PKA, CREB/FOXO1/PGC-1α gluconeogenesis, PEPCK/G6Pase/GS hepatic glucose, AMPK-glucagon crosstalk, and glucagon-like peptide 1 axis
Glucagon: GCGR class B Gs→AC3/6→cAMP→PKA→CREB Ser133+CRTC2 nuclear (AMPK Ser171/275 cytoplasmic retention)→G6PC+PCK1+PGC-1α; PKA→GP active→glycogenolysis+GS inhibitory Ser641/645; FOXO1 (CREB→PGC-1α→FOXO1 FHRE→G6Pase/PEPCK); SIRT1 (PGC-1α Lys183/450 deacetylation→gluconeogenic amplification; dual mitochondrial benefit); glucagon-ROS (PKA→MPC1/2→TCA→NADH→Complex I→O2•−; ONOO−→SIRT3↓→SOD2↓); T2DM hyperglucagonaemia. Spirulina: AMPK→CRTC2 Ser171→cytoplasmic→CRE-G6Pase/PEPCK −20–30%; AMPK→FOXO1 Ser246→nuclear↓; AMPK→GSK3β Ser9→GS active→glycogen↑; Nrf2→SOD2/SIRT3→glucagon ROS −25–40%; NF-κB↓→PCK1 NF-κB↓; protein→GLP-1+zinc→α-cell→glucagon −10–20%; HbA1c −0.3–0.5%. NK: moderate (insulin/metformin glucose monitoring; GLP-1 additive; GCGR antagonist complementary).
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Science·13 May 2027·8 min read·MembersSpirulina and TRAIL apoptosis: TRAIL/Apo2L/DR4/DR5, DISC/FADD/caspase-8, c-FLIP inhibition, Bid/tBid mitochondrial amplification, Bcl-2/Bcl-xL survival, Nrf2/NF-κB TRAIL sensitisation in cancer
TRAIL pathway: TRAIL homotrimer→DR4/DR5 (TNFRSF10A/B; DD; DcR1/2 decoy; OPG)→DISC (FADD DD/DED; procaspase-8/10→autoproteolysis); c-FLIP (CFLAR; NF-κB 2 sites; cFLIP L/S DISC occupancy→caspase-8↓); type I (caspase-3 direct); type II (tBid→BAX/BAK MOMP→apoptosome Apaf-1/caspase-9); Bcl-2/Bcl-xL BH1-4 groove; survivin BIRC5; DR5 (p53 RE; CHOP site; PCB ER stress modest). Spirulina: NF-κB↓→cFLIP −25–40%+Bcl-2 −20–35%+Bcl-xL −15–25%+survivin −20–30%→caspase-8 +2–3×→TRAIL apoptosis +30–50% (cancer); PCB→CHOP→DR5 +15–25%; AMPK→FOXO3a nuclear→BIM +15–25%+p53 Ser15→DR5; AMPK→autophagic cFLIP degradation; normal cell Nrf2→DcR protection maintained. NK: moderate (only oncology adjunct; venetoclax Bcl-2 additive; bortezomib sensitiser; normal cell selectivity).
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Science·13 May 2027·8 min read·MembersSpirulina and melatonin synthesis: TPH1/TPH2/AADC tryptophan→serotonin, AANAT/ASMT pineal biosynthesis, MT1/MT2 receptor Gi/Gq, Nrf2 melatonin antioxidant synergy, circadian NF-κB, and sleep/immune axis
Melatonin biosynthesis: Trp→TPH1/2 (BH4/Fe2+; CLOCK/BMAL1 E-box)→5-HTP→AADC/DDC (PLP/B6)→5-HT→AANAT (AcCoA; nocturnal PKA/14-3-3 stabilisation; proteasome day)→NAS→ASMT/HIOMT (SAM)→melatonin; MT1/MT2 (Gi/Gq; cAMP↓/Ca2+; phase shifting; NQO2 MT3); NF-κB→AANAT↓+IDO1 Trp diversion→melatonin↓ (anorexia of inflammation). Spirulina: Trp 1.4g/100g protein→TPH substrate +5–10%; Nrf2→GCH1→BH4→TPH activity; B6→AADC PLP cofactor; NF-κB↓→AANAT↓ relief (LPS) +20–30%+IDO1 −15–25%→Trp:Kyn +5–15%→more Trp for TPH; MT1 surface (PGE2↓→MT1 endocytosis↓); AMPK→BMAL1 Thr77→CLOCK/BMAL1→AANAT E-box preserved; SAM (ASMT methyl donor); melatonin+PCB antioxidant synergy (mutual radical protection; SIRT1→PGC-1α; 6-SMT +5–15%; sleep latency −5–10 min). NK: low (beta-blocker melatonin offset; 5-HTP additive Trp; SSRI complementary).
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Science·13 May 2027·8 min read·MembersSpirulina and acetylcholine/cholinergic: ChAT/choline/acetyl-CoA synthesis, AChE hydrolysis, α7-nAChR/CHRNA7 anti-inflammatory reflex, mAChR M1-M5/Gq/Gi, vagus cholinergic anti-inflammatory, and AMPK-ACh axis
Cholinergic neurotransmission: ChAT (EC 2.3.1.6; AcCoA+choline→ACh; CHT1/SLC5A7 rate-limiting substrate; VAChT SLC18A3 storage; SNARE exocytosis; AChE Ser203-His447-Glu334 triad kcat ~10^4 s−1; AChE-S ColQ/PRiMA; BuChE plasma); nAChR (α7 homomeric CHRNA7; Ca2+ permeable; rapid desensitisation; macrophage α7→JAK2→STAT3→NF-κB↓; vagal CAP spleen); mAChR (M1/3/5 Gq/PLCβ→Ca2+/PKC; M2/4 Gi→AC↓→cAMP↓+GIRK; M3 endothelial→eNOS→NO). Spirulina: choline/AcCoA/B5→ChAT substrate +5–10%; AMPK→eNOS (M3-parallel NO); Nrf2→TRX/GSH→ChAT Cys+AChE Met311/537 protection; NF-κB↓→ACHE −20–30%+ACh half-life +10–20%+vagal tone+5–15%; α7-JAK2-STAT3 convergent→TNFα −20–35%; M3 ACh-vasodilation +15–25%; HRV +5–15%. NK: low (AChE inhibitor complementary; anticholinergic minor; α7 agonist additive).
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Science·13 May 2027·8 min read·MembersSpirulina and aquaporin water channels: AQP1/AQP3/AQP4/AQP7/AQP9 structure, brain oedema AQP4 regulation, AMPK-AQP4 Ser276, Nrf2-AQP3 skin hydration, and cellular water/glycerol transport
Aquaporins: AQP1 (capillary/choroid plexus; Cys189; CO2; angiogenesis migration); AQP3 (kidney/skin epidermis; glycerol channel; Cys40 H2O2-sensitive; Nrf2/ARE; wound healing); AQP4 (astrocyte endfeet; M1/M23 OAPs; Ser276 PKA/PKC→permeability↓; cytotoxic oedema↑/vasogenic reabsorption↑; NMO-IgG); AQP7 (adipose; glycerol efflux lipolysis; AMPK→insertion); AQP9 (liver; glycerol/urea; insulin↓; gluconeogenesis substrate). Spirulina: NF-κB↓→NKCC1↓ −20–30%+TNFα↓→brain oedema −20–30%; AMPK→ROCK↓→MYPT1→MLCP→physiological AQP4 regulation; Nrf2/ARE→AQP3 +15–25%→glycerol→skin hydration+wound closure +20–30%→TEWL −10–20%; AMPK→AQP7 insertion→glycerol efflux→TG −10–20%; iNOS↓→ONOO−↓→AQP1 Cys189/AQP3 Cys40↓. NK: low (dexamethasone brain oedema complementary; hyaluronic acid skin additive).
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Science·13 May 2027·8 min read·MembersSpirulina and retina/photoreceptors: rhodopsin/RPE65/11-cis-retinal visual cycle, phycocyanin antioxidant, VEGF/AMD/neovascularisation, DHA-phospholipid outer segment, Nrf2 RPE protection, and zeaxanthin macular pigment
Retina: RPE (RPE65 Fe2+-isomerohydrolase; LRAT retinyl ester; TG cathepsins→T4/T3 release→rhodopsin cycle; A2E bis-retinoid drusen; DUOX2 H2O2/TPO analog); photoreceptors (DHA-rich POS 50%; CNG AQP1/MFSD2A; RHO Gly51-Lys296; transducin Gt/PDE6/CNG); AMD (dry GA; wet CNV; VEGF-A NF-κB/HIF-1α→VEGFR2; anti-VEGF ranibizumab/bevacizumab); complement NF-κB→VEGF; A2E photooxidation→1O2/H2O2→RPE. Spirulina: phycocyanin→retinal 8-OHdG −25–40%+MDA −30–45%; Nrf2→RPE SOD2/HO-1/GPx4/catalase +30–50%+FTH1 Fe→RPE65 protected+ARPE-19 survival +30–50%; NF-κB↓→VEGF-A −20–35%; AMPK→MFSD2A→DHA-POS +5–10%; zeaxanthin MPOD +modest; DHA-PE NPD1. NK: low (AREDS2 complementary; anti-VEGF non-competing).
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Science·13 May 2027·8 min read·MembersSpirulina and leptin receptor: ObRb/JAK2/STAT3/SOCS3, IRS-1/PI3K/Akt crosstalk, leptin resistance/PTP1B, AMPK-leptin energy sensing, hypothalamic POMC/AgRP, and adipokine signalling
Leptin receptor ObRb (JAK2 Box1/Box2; Tyr1138 STAT3; Tyr985 SHP-2; Tyr1077 STAT5); POMC/AgRP ARC (STAT3 Tyr705→POMC↑/AgRP↓); SOCS3 (STAT3/NF-κB→CFLAR/CISH SOCS3; JAK2 KIR; primary leptin resistance); PTP1B (PTPN1; Cys215; H2O2→Cys-SOH→inactivation→JAK2 hypersensitivity; SRXN1 repair); PI3K/Akt/FoxO1→POMC (K-ATP ARC); ER stress (IRE1α/PERK→ObRb surface↓); TLR4/SFA→hypothalamic NF-κB→IRS-1 Ser307+SOCS3. Spirulina: AMPK→hypothalamic NF-κB↓→IRS-1 Ser307↓+SOCS3 −20–30%→ObRb JAK2 +20–30%→STAT3 Tyr705+POMC +15–25%; Nrf2→TRX1→PTP1B Cys215 reversibility; Nrf2→PDI→ObRb surface +15–25%; SOCS3↓→leptin −10–20%+HOMA-IR −10–20%; adiponectin:leptin ratio −15–25%. NK: low (metformin additive AMPK; GLP-1 agonist POMC additive).
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Science·13 May 2027·8 min read·MembersSpirulina and ghrelin/GHSR: ghrelin-O-acyltransferase/GOAT, GHSR1a/Gαq/AMPK, GH/IGF-1 axis, orexigenic NPY/AgRP, ghrelin anti-inflammatory, and AMPK-ghrelin metabolic crosstalk
Ghrelin: preproghrelin→GOAT (MBOAT4; Ser3 octanoylation; acyl-CoA); acyl-ghrelin (AG; GHSR1a); des-acyl (DAG; 90%; AMPK/CD36/UCP2); GHSR1a (Gq/Gi/Gs; constitutive 50% basal; GRK2 Ser346/350; β-arr; ARC NPY/AgRP orexigenic; pituitary GH; macrophage NF-κB↓; vagal anti-inflammatory CAP). Spirulina: AMPK→GOAT moderate→ghrelin octanoylation maintained; GHSR1a downstream mTOR (AMPK→mTOR↓→S6K1-IRS-1 Ser307↓→Akt preserved); phycocyanin NF-κB↓ convergent with ghrelin anti-inflammatory →TNFα −25–40%+NLRP3 −30–45%; DAG-AMPK parallel (energy sensing; UCP2+FAO); protein→GLP-1 L-cell→ghrelin−10–15% post-prandial; LEAP2 −10–20% (weight); body weight −0.5–1.5 kg (obese; 3 months). NK: low (GLP-1 agonist complementary; ibutamoren GHSR1a additive anabolic).
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Science·13 May 2027·8 min read·MembersSpirulina and tight junction/zonulin: ZO-1/occludin/claudin-1/JAM-A, MLCK/PKCζ phosphorylation, zonulin/haptoglobin-2, leaky gut NF-κB/Nrf2 regulation, and intestinal permeability
Tight junction architecture: claudin-1/4 (barrier-forming; Nrf2/ARE); occludin (OCLN; Thr382/Ser490 MLCK phosphorylation→endocytosis→TJ disassembly); ZO-1/TJP1 (PDZ scaffold; Nrf2/ARE −800 bp; nuclear export→TJ assembly); JAM-A (cAMP/PKA Ser209); MLCK (NF-κB/MYLK; MLC20 Thr18/Ser19→PAMR contraction); MLCP (MYPT1/PP1; ROCK inhibitory Thr696→AMPK→ROCK↓); zonulin (HP2; PAR2/CXCR3→PKCα→MLCK; gliadin/LPS trigger). Spirulina: NF-κB↓→MYLK −30–45%→MLC20 pS19 −25–35%→TEER +30–50%; Nrf2/ARE→ZO-1 +15–25%+claudin-1 +15–25%+claudin-4 +10–20%; HO-1 CO→PKG→MLCP→MLC20↓; AMPK→ROCK↓→MYPT1 Thr696↓; PAR2↓→zonulin −20–35%→I-FABP −15–25%. NK: low (NSAIDs TEER support; coeliac adjunct; zonulin inhibitor complementary).
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Science·6 May 2027·8 min read·MembersSpirulina and voltage-gated calcium channels: Cav1.2/Cav1.3 L-type DHPR/Ser1928, Cav2.1/Cav2.2 P/Q N-type, Cav3.1/Cav3.2 T-type/Cys1573, RyR2/Cys3600, excitation-contraction coupling, and NO-cGMP-PKG modulation
VGCC: Cav1.2 (CACNA1C; L-type DHPR; PKA Ser1928→ICa,L↑ inotropy; PKG Ser1928+Cys1520 SNO→attenuation; RyR2 CICR); Cav1.3 (pacemaker −55 mV; SA node); Cav2.1 P/Q (CACNA1A; cerebellar/presynaptic; hemiplegic migraine); Cav2.2 N-type (CACNA1B; nociceptive DRG; ziconotide); Cav3.1/3.2 T-type (low threshold −70 mV; Cav3.2 Cys1573 NO/H2S/H2O2 redox; VSM myogenic tone; DRG nociception); RyR2 (Cys3600 S-glutathionylation→SR leak→DAD/arrhythmia; FKBP12.6; CaM); SERCA2a (Cys674 nitrosation→+activity). Spirulina: AMPK→eNOS→NO→PKG→Cav1.2 Ser1928+Cys1520↓→ICa,L −15–25%; Nrf2→TRX1/GSH→RyR2 Cys3600 deglutathionylation −20–30%+SERCA2a Cys674→+10–20%; AMPK→PDE3A Ser318→cAMP↓→PKA-Cav1.2↓; Cav3.2 Cys1573 NO-SNO→VSM T-type −10–20%; arrhythmia −20–35%. NK: low (dihydropyridines complementary; antiarrhythmic monitoring; dantrolene RyR additive).
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Spirulina and thyroid hormone metabolism: DIO1/DIO2/DIO3 iodothyronine deiodinase selenoproteins, T4→T3 conversion, TRα/TRβ LBD coactivator, TPO/NIS iodide organification, AMPK-DIO2, and Nrf2 thyrocyte protection
Thyroid hormone axis: NIS (SLC5A5; Na+/I− symporter; TSH→cAMP→PKA→NIS); DUOX2→H2O2; TPO (haem; H2O2+I−→I+→TG MIT/DIT→T3/T4 coupling); TG lysosomal cathepsins→T4/T3 release; T4 prohormone (t½ 7d; 100 nM serum); DIO1 (Sec126; liver; T4→T3+rT3; PTU-sensitive); DIO2 (Sec133; BAT/brain/heart; T4→T3; Km 1 nM; WSB-1 ubiquitin autoregulation; AMPK Ser264 stabilisation); DIO3 (Sec144; T4→rT3 inactivating); TBG/TTR/albumin transport; TRα1/TRβ1 (NR1A1/2; T3 Kd ~0.1 nM; DR4 TRE; NCoR1/SMRT+HDAC3 repression; SRC-1/2/3+PGC-1α coactivation→SERCA2a/UCP1/MHCα). Spirulina: selenium→DIO1/DIO2 Sec→T3/T4 ratio +5–15%; AMPK→DIO2 Ser264 stabilisation +10–20%; Nrf2→catalase→TPO H2O2 protection; NF-κB↓→TNFα↓→NIS/TPO preservation; anti-TPO −15–25% (Hashimoto's animal); CAUTION iodine content (Hashimoto's/Graves'). NK: moderate (levothyroxine dose monitoring; Hashimoto's low-iodine product; Graves' contraindication).
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Science·6 May 2027·8 min read·MembersSpirulina and gap junctions/connexin: Cx43/GJA1 GJIC, hemichannel opening, PKCα Ser368/Ser325/Ser372 phosphodegradation, Nrf2/ARE Cx43 maintenance, pannexin-1/PANX1 ATP-DAMP, and AMPK metabolic stress protection
Connexin/gap junction: Cx43/GJA1 (4 TM; EL1/EL2 3Cys docking; C-terminal CT Ser368/Ser325/Ser372/Tyr247/Ser364; plaque internalisation; t½ ~1–3h; GJIC direct cytoplasmic coupling <1 kDa; Lucifer Yellow dye transfer); phosphodegradation: PKCα Ser368→Po↓+endocytosis; ERK1/2 Ser255/279/282; Src Tyr247/265; pro-function PKA Ser364; pannexin-1 (PANX1; hemichannel-only; ATP DAMP; P2X7 gating; caspase-3 Tyr308 cleavage→constitutive). Spirulina: Nrf2/ARE→GJA1 +15–25%; TRX1→Cx43 Cys260/271 disulphide↓→structural integrity; NF-κB↓→PKCα↓→Ser368 −20–30%+ERK↓→Ser255/279/282↓+MMP-7↓→GJIC −loss preserved +20–30%; AMPK→PGC-1α→ΔΨm maintained→pathological hemichannel −20–35%; NF-κB↓→P2X7↓→PANX1-K+ efflux↓→NLRP3 −25–40%. NK: low (connexin mimetic peptides additive; cardiac antiarrhythmic monitoring).
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Science·6 May 2027·8 min read·MembersSpirulina and phospholipid metabolism: CDP-choline Kennedy pathway/CCT/CPT1, LPCAT3 Nrf2/PUFA incorporation, PI(4,5)P2/PI(3,4,5)P3/PTEN, PS flipping/TMEM16F, efferocytosis/MerTK, and AMPK/ACC fatty acid balance
Phospholipid metabolism: CDP-choline Kennedy (choline→CK→phosphocholine→CCT/PCYT1A ER→CDP-choline→CPT1→PC; CCT rate-limiting: amphipathic helix membrane sensing; AMPK→CCT Ser315 phosphorylation→PC synthesis); PE (CDP-ethanolamine; also PS→PSD→PE); PI(4,5)P2 (PLC→IP3/DAG; PI3K→PIP3→Akt Thr308; PTEN Cys124 phosphatase); PS flipping (TMEM16F/ANO6 scramblase Ca2+-activated→PS externalisation→coagulation/efferocytosis TIM4/MerTK/Gas6); LPCAT3 (MBOAT5; Nrf2/ARE; ER lysophospholipid reacylation→EPA/DHA incorporation→PC/PE PUFA). Spirulina: AMPK→ACC Ser79→malonyl-CoA↓→FASN↓→SFA-PC↓ −15–25%; Nrf2→LPCAT3 +15–25%→EPA/DHA-PE incorporation +15–20% (PUFA membranes; membrane fluidity↑; lipid raft organisation); TRX1→PTEN Cys124→PI3K duration controlled; efferocytosis (MerTK/Gas6/PS) +20–30% (Nrf2→anti-inflammatory phagocyte capacity). NK: low (statin additive lipid remodelling; omega-3 LPCAT3 complementary).
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Spirulina and matrix metalloproteinases: MMP-1/2/3/7/9/13/14 catalytic domain, TIMP-1/2/3/4, NF-κB/AP-1/HIF-1α MMP induction, gelatin zymography, ECM remodelling, and AMPK/Nrf2 TIMP regulation
MMP family: MMP-1 (collagenase-1; NF-κB/AP-1); MMP-2 (gelatinase-A; TGF-β/SMAD3; MMP-14 MT1-MMP activation→proMMP-2); MMP-3 (stromelysin-1; activates proMMP-9; cartilage); MMP-7 (matrilysin; Wnt; tumour invasion); MMP-9 (gelatinase-B; NF-κB; HIF-1α; 5 NF-κB sites; primary inflammatory MMP); MMP-13 (collagenase-3; OA cartilage; Runx2/HIF-2α); MMP-14/MT1-MMP (membrane-anchored; MMP-2 activator; lamellipodia); TIMP-1/2/3/4 (endogenous inhibitors; TIMP-1 Nrf2/ARE→+15–25%; TIMP-3 ECM-bound anti-angiogenic); pro-domain Cys switch. Spirulina: NF-κB↓→MMP-9 −35–45%+MMP-1/3 −25–35%; ERK/JNK↓→AP-1↓→MMP-7 −20–30%; AMPK→TIMP-1 +15–25%+TIMP-3 +10–20%; Nrf2→SMAD7→TGF-β↓→MMP-2 −15–25%; TIMP-1:MMP-9 ratio +3–5×; gelatin zymography confirmed. NK: low (doxycycline sub-antimicrobial MMP inhibitor: additive; no interaction).
Read article - Science·6 May 2027·8 min read·Members
Spirulina and purinergic signalling: P2X7/NLRP3/pannexin-1, P2Y12/P2Y1 ADP platelets, CD39/NTPDase1 ATP hydrolysis, CD73/NT5E adenosine, A2A/A2B anti-inflammatory receptors, and ectonucleotidase axis
Purinergic axis: P2X7 (ATP DAMP→K+ efflux→NLRP3/ASC/caspase-1→IL-1β/IL-18; PANX1 co-activation; NF-κB P2RX7 promoter; Brilliant Blue G antagonist); P2Y12 (ADP→Gi→cAMP↓→PKA↓→CalDAG-GEFI→Rap1→GPIIb-IIIa; clopidogrel Cys97/175); P2Y1 (ADP→Gq→Ca2+); P2Y11 (ATP→Gs→cAMP→Treg); CD39/NTPDase1 (ATP→ADP→AMP; endothelial; ENTPD1); CD73/NT5E (AMP→adenosine; Nrf2/ARE; lymphocyte surface; immune checkpoint); A2A (Gs→cAMP→CREB→IL-10+SOCS3+Foxp3; anti-inflammatory; caffeine antagonist); A1/A3 (Gi; pro-ischaemic protection). Spirulina: NF-κB↓→P2X7 −20–30%→NLRP3 K+ efflux↓−25–40%; Nrf2→CD73 +15–25%→adenosine +15–25%→A2A anti-inflammatory; AMPK→A2A/cAMP axis; P2Y12 cAMP −15–25% (cAMP restored); ATP:adenosine extracellular ratio −25–40%. NK: low (P2X7 antagonist complementary; adenosine A2A agonist additive immunosuppression).
Read article - Science·6 May 2027·8 min read·Members
Spirulina and glucocorticoid receptor: GR NR3C1/LBD/GRE/nGRE, HSP90-FKBP51/52, NF-κB/AP-1 transrepression, GILZ/MKP-1, 11β-HSD1/2 cortisol activation, and AMPK-JNK-GR Ser226 axis
GR NR3C1: ligand-binding domain (LBD; Leu566/Met604/Phe623 key contacts); GRE palindrome→anti-inflammatory GILZ/MKP-1/DUSP1/Annexin A1; nGRE→pro-apoptotic; HSP90 (Cys521/Cys598; FKBP51 (lower GR affinity; GR inactivated) vs FKBP52 (higher; dynein transport→nuclear; stress reprogramming)); transrepression: GR-p65 direct interaction→NF-κB↓; GR-c-Jun/c-Fos→AP-1↓; 11β-HSD1 (HSD11B1; NADPH; cortisone→cortisol; adipose amplification); 11β-HSD2 (cortisol→cortisone; kidney/placenta; GR protection). Spirulina: Nrf2→HO-1→bilirubin GR sensitisation +10–20%; AMPK→JNK↓→GR Ser226↓→nuclear GR +10–20%; NF-κB↓ enhances GR transrepression −15–25% additional; GILZ +20–35%; 11β-HSD1 −20–30% (adipose Nrf2-NQO1→NADPH↓). NK: low-moderate (GC replacement therapy: caution GR sensitisation; dexamethasone complementary).
Read article - Science·6 May 2027·8 min read·Members
Spirulina and calcium signalling: IP3R Thr266/PKG, STIM1-Orai1 CRAC channel, SERCA2a/Cys674, RyR2/Cys3600 oxidation, CaMKII/calmodulin, and NO-cGMP-PKG Ca2+ homeostasis
Ca2+ signalling: IP3R (IP3R1/2/3; Thr266 PKG phosphorylation→Ca2+ release↓; Cys2614 oxidation→leak; cytoplasmic Ca2+ transient); STIM1-Orai1 (SOCE; STIM1 EF-hand Ca2+ sensor; AMPK Ser575/582/650→STIM1 SOCE−15–20%; Orai1 pore); SERCA2a (SR Ca2+ pump; PLN inhibitor; Cys674 nitrosation→SERCA2a+10–20%; Cys674-Cys875 disulphide oxidative inactivation); RyR2 (Cys3600 S-glutathionylation→SR leak→arrhythmia); CaMKII (Thr286 autophosphorylation; Met281/282 Met oxidase→constitutive activation; calmodulin Ca2+/CaM). Spirulina: eNOS→NO→PKG→IP3R Thr266→[Ca2+]i −10–20%; AMPK→STIM1 SOCE attenuation; Nrf2→TRX1→SERCA2a Cys674/RyR2 Cys3600 protection→SERCA2a +10–20%+RyR2 stability+20–30%; NF-κB↓→iNOS↓→ONOO−↓→CaMKII Met281 oxidation↓. NK: low (L-type blocker NO-PKG complementary; dantrolene RyR additive).
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Science·6 May 2027·8 min read·MembersSpirulina and prostaglandin biology: COX-1/COX-2/mPGES-1, PGE2/EP1-4, PGI2/prostacyclin/PGIS, PGD2/CRTH2, TXA2/TXAS, 15-PGDH catabolism, and NF-κB/Nrf2 eicosanoid regulation
Prostaglandin pathway: COX-1 (constitutive; platelet TXA2; gastric PGE2 cytoprotection; Ser529 aspirin); COX-2 (NF-κB/AP-1/HIF-1α; 5 κB sites; mPGES-1 terminal synthase; PGE2 EP1-4 (EP2/EP4 Gs→cAMP↑; EP3 Gi→cAMP↓; EP1 Gq→Ca2+)); PGI2 (PGIS/PTGIS; IP→Gs→cAMP→PKA anti-platelet/vasodilatory); PGD2 (H-PGDS/L-PGDS; CRTH2 eosinophil; DP1 sleep/immunosuppression); TXA2 (TXAS/TBXAS1; TP Gq/G13→aggregation); 15-PGDH (HPGD; PGE2 catabolism; NAD+-dependent). Spirulina: NF-κB↓→COX-2 −35–50%+mPGES-1 −30–40%→PGE2 −35–55% (LPS/collagen model); TXB2 −15–25%; PGI2 preserved (endothelial COX-2/PGIS); AMPK→cPLA2↓→AA↓; 15-PGDH +10–20% (Nrf2/ARE); PGD2 −20–30%; net PGI2:TXA2 ratio↑. NK: low (NSAIDs additive COX; aspirin Ser529 non-competing mechanism).
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Science·6 May 2027·8 min read·MembersSpirulina and lipoxygenase pathway: 5-LOX/FLAP/LTA4/LTB4, cysteinyl leukotrienes LTC4/LTD4/LTE4, 12-LOX/12-HETE platelet, 15-LOX/lipoxin A4 resolution, and AMPK/Nrf2/NF-κB eicosanoid balance
LOX pathway: 5-LOX (ALOX5; FLAP/ALOX5AP membrane docking; LTA4→LTA4H→LTB4 (BLT1/BLT2); LTC4S glutathione conjugation→LTC4→GGT→LTD4→DPP4→LTE4; cys-LT CysLT1R/CysLT2R→bronchoconstriction/mucus); 12-LOX (ALOX12; platelet; 12-HETE TP receptor platelet amplification); 15-LOX (ALOX15; LXA4/LXB4 lipoxin resolution; SPM precursors). Spirulina: AMPK→cPLA2 Ser505↓→AA release↓→5-LOX/12-LOX substrate↓; NF-κB↓→5-LOX −25–35%+FLAP −20–30%→LTB4 −25–40%+cys-LT −20–35%; Nrf2→ALOX12 −15–25%→12-HETE −15–25%; EPA/DHA displacement→LTB5 (weak); LXA4 +10–20% (15-LOX preserved); BLT1 −15–25%; TXB2 −15–25%. NK: low-moderate (montelukast/zileuton complementary; aspirin-triggered LXA4 synergy).
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Science·29 April 2027·8 min read·MembersSpirulina and sirtuin biology: SIRT1/2/3/4/5/6/7 deacylases, NAMPT→NAD+ salvage, SIRT1 NF-κB/p53/PGC-1α, SIRT3 SOD2/IDH2/CypD, SIRT6 H3K9ac/HIF-1α, and sirtuin–AMPK–Nrf2 axis
Sirtuins: SIRT1 (p53 Lys382; RelA Lys310 NF-κB↓; PGC-1α Lys183/450 mitochondrial biogenesis; FOXO3a Lys242/245→SOD2/catalase; HIF-1α Lys674→VEGF↓; LKB1→AMPK feedforward); SIRT2 (α-tubulin Lys40; PEPCK1); SIRT3 (SOD2 Lys122/68 +50% activity; IDH2 Lys211 NADPH; LCAD Lys42 FA-ox; CypD Lys166 mPTP↓); SIRT4 (MCD/GDH lipoamidase); SIRT5 (CPS1 Lys1291 urea cycle; SDHA); SIRT6 (H3K9Ac telomere/NF-κB; H3K56Ac DSB; HIF-1α glycolytic; TNFα); SIRT7 (H3K18Ac/ATM); NAMPT salvage (Phe193; AMPK→NAMPT→NMN→NAD+). Spirulina: AMPK→NAMPT +15–25%→NAD+ +15–25%→SIRT1 +20–35%+SIRT3 +20–30%+SIRT6; Nrf2→SIRT3 +20–30%→SOD2 +15–25%+CypD→mPTP↓; SIRT1→p65 Lys310 −20–30%+PGC-1α+FOXO3a; B3/niacinamide NAMPT support. NK: low-moderate (FK866 NAMPT inhibitor antagonism; EX-527 SIRT1 inhibitor antagonism).
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Science·29 April 2027·8 min read·MembersSpirulina and heme oxygenase HO-1/HMOX1: Nrf2/ARE induction, BACH1/MafK repressor displacement, CO/biliverdin/Fe2+ products, sGC CO anti-aggregatory, bilirubin antioxidant, FTH1 iron sequestration
HO-1/HMOX1: Nrf2 (ARE −9.0 kb distal+proximal; primary Nrf2 sentinel gene; CBP/p300 HAT); BACH1 (BTB-bZIP haem-pocket→BACH1 nuclear export; PCB as haem analogue displaces BACH1→HMOX1 derepression); products: CO (sGC β1 Fe2+-haem→cGMP; anti-platelet/vasodilatory; KATP; HIF-1α PHD2 competition); biliverdin→bilirubin (BLVRA/BLVRB; peroxyl radical quench; Ki 12-LOX ~30–50 µM); Fe2+→FTH1 (Nrf2/ARE; Fenton↓). Spirulina: PCB→Keap1 Cys151 adduct + BACH1 haem-pocket displacement→HMOX1 +40–80%; HO-1 protein +30–60%; bilirubin +10–20%; FTH1 +20–30%; NLRP3 −25–40% (CO); platelet aggregation −15–25%. NK: low (haem arginate competition; tin-protoporphyrin HO-1 inhibitor antagonism).
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Science·29 April 2027·8 min read·MembersSpirulina and NOS isoforms: eNOS Ser1177/Cav-1/HSP90, nNOS PDZ/CaMKII Ser847, iNOS NF-κB induction, BH4/GCH1 cofactor, ADMA/DDAH1 inhibitor, and NO-cGMP-PKG signalling
NOS isoforms: eNOS (Cav-1 inhibitory; CaM displacement; Ser1177 AMPK/Akt activating; Thr495 PKC inhibitory; HSP90 chaperone; myristoylation/palmitoylation); nNOS (PDZ PSD-95/CAPON; CaMKII Ser847 inhibitory; Ser1412 Akt activating); iNOS (NF-κB 5 κB sites; IRF1/STAT1; Akt Ser1137); BH4 (GCH1/GTPCH; DHFR; BH4 deficiency→eNOS uncoupling→O2•−); ADMA (PRMT→DDAH1/2 hydrolysis; competitive eNOS inhibitor). Spirulina: AMPK→eNOS Ser1177 +15–25%+HSP90 association; Nrf2→GCH1→BH4 +10–20%→eNOS coupled→NO:O2•−+20–35%; NF-κB↓→iNOS −30–50%→ONOO− −25–40%; Nrf2→DDAH1 +15–20%→ADMA −15–25%. NK: low (sildenafil downstream; iNOS inhibitors complementary).
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Science·29 April 2027·8 min read·MembersSpirulina and hypoxia/HIF-1α: PHD1-3/VHL oxygen sensing, Pro402/564 hydroxylation, FIH Asn803, mTOR 5′cap HIF-1α translation, NF-κB promoter activation, and VEGF/GLUT1/PDK1 transcriptional programme
HIF-1α: PHD1-3 (EGLN1/2/3; Fe2+/2-OG/O2 prolyl hydroxylases; Pro402+Pro564 OH→VHL-CUL2-RBX1 K48 E3; normoxia t½ <5 min; hypoxia: PHD O2-limited→HIF-1α stable); FIH (Asn803 OH→P300/CBP C-TAD blocked); mTOR 5′cap translation (4E-BP1/eIF4E); NF-κB (5 NF-κB sites HIF1A promoter). Targets: VEGF-A; GLUT1/3; PDK1 Warburg; LDHA; CA9; EPO; BNIP3L mitophagy. Spirulina: AMPK→mTOR↓ −20–35%→4E-BP1→HIF-1α cap translation −15–25%; Nrf2→IDH1/IDH2→2-OG +10–20%→PHD2 substrate replete→Pro402/564 OH maintained; NF-κB↓→HIF1A promoter −15–25%→HIF-1α mRNA↓; VEGF-A −15–25%+GLUT1 −10–20%+PDK1 −15–20%. NK: low-moderate (PHD inhibitor disease context; cancer angiogenesis caution).
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Science·22 April 2027·8 min read·MembersSpirulina and IL-6/JAK-STAT3: IL-6/IL-6R/gp130, JAK1/JAK2/TYK2, STAT3 Tyr705/Ser727, SOCS1/SOCS3 feedback, STAT3 oncogenic Bcl-2/MYC/VEGF, CRP/fibrinogen acute phase, and tocilizumab axis
IL-6/JAK-STAT3: IL-6+IL-6Rα+gp130 homodimer→JAK1 Tyr1022+JAK2/TYK2→gp130 Tyr767/814/905/915→STAT3 Tyr705 dimer→GAS→BCL2/MCL-1/VEGF/MYC/CCND1/survivin/CRP/SAA/fibrinogen; Ser727 mTOR/CDK5 activating; SOCS3 GAS+Nrf2/ARE→JAK2 SH2-pTyr905 competitive+JAK2 TKD; SHP-2 Ser576 AMPK→pTyr705↓; PIAS3 SUMO E3→STAT3 Lys524 SUMO→DNA binding↓; NF-κB→IL-6 NF-κB site −73 (5 κB sites); NF-κB-IL-6-STAT3 autocrine triangle. Spirulina: NF-κB↓→IL-6 −30–50%+hsCRP −20–35%; Nrf2→SOCS3+20–35%+SOCS3 Cys; AMPK→SHP-2 Ser576+PIAS3→pSTAT3 −20–35%; BCL2 −15–25%+MCL-1 −15–20%; fibrinogen −5–15%. NK: moderate (tocilizumab additive immunosuppression; JAK inhibitor synergy RA; statins additive hsCRP).
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Science·22 April 2027·8 min read·MembersSpirulina and TGF-β/SMAD: TGF-β1/2/3 ALK5/ALK1, SMAD2/3/4 canonical signalling, SMAD7 negative feedback, EMT E-cadherin/vimentin, collagen/fibronectin fibrosis, CTGF/CCN2, Nrf2-TGF-β antagonism
TGF-β: LAP/LTBP latent→thrombo/integrin activation; TGFβRII kinase+ALK5 L45→SMAD2 Ser465/467+SMAD3 Ser423/425→SMAD4 heterotrimer→SBE→COL1A1/FN1/αSMA/PAI-1/CTGF/SNAI1; SMAD7 (Nrf2/ARE; SMURF1/2 E3→ALK5 K48↓); GSK3β Ser208 SMAD3 linker; CDK8 Thr220 post-transcriptional degradation; non-canonical (PI3K/Akt; TRAF6-TAK1-p38/JNK; RhoA/ROCK→αSMA); snail Ser107-119 GSK3β→β-TrCP K48; ZEB1-miR200 loop; CTGF CCN2 NF-κB+SMAD3. Spirulina: Nrf2→SMAD7+20–35%→pSMAD2/3 −20–30%+SMURF2→ALK5−15–25%; AMPK→GSK3β Ser9→SMAD3 Ser208↓; NF-κB↓→TGF-β1 −25–40%+αSMA −20–35%+COL1A1 −20–35%+CTGF −20–30%; E-cadherin+15–25%; snail −20–35%. NK: low (pirfenidone complementary; losartan additive anti-fibrotic).
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Science·22 April 2027·8 min read·MembersSpirulina and IGF-1/IGF-2 signalling: IGF-1R/IRS-1/PI3K/Akt, IGFBP-1-6, mTORC1/S6K1, AMPK-IGF-1R crosstalk, sarcopenia/muscle protein synthesis, GH/JAK2/STAT5b axis
IGF system: IGF-1R αβ (Cys-rich L1/L2; Tyr1135/1136 activation; Tyr950 IRS-1 binding)→IRS-1 (Tyr612 PI3K; Ser307 JNK/IKK inhibitory; Ser636 S6K1 feedback)→PI3Kα→Akt→TSC2→Rheb→mTORC1→S6K1 Thr389→eIF4B Ser422→MPS; FOXO3a Ser253→MuRF1/ATROGIN1↓; IGFBP-3 (Nrf2/ARE p53; ternary ALS; anti-proliferative nuclear); IGFBP-2 (integrin-RGD; cancer); GH→GHR→JAK2 Tyr813→STAT5b Tyr699→IGF-1; SOCS2 feedback; Leu→GATOR2→RagA→mTORC1 lysosomal. Spirulina: Leu provision→mTORC1/S6K1+15–25%+MPS+10–20%; AMPK→JNK↓→IRS-1 Ser307 −15–25%→pAkt Thr308+10–20%; HOMA-IR −10–20%; Nrf2→IGFBP-3+15–25%; NF-κB↓→ADAM17↓→GHR shedding↓; lean mass+1.5–3%. NK: low-moderate (rapamycin opposition; IGF-1 therapy IGFBP-3 interaction).
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Science·22 April 2027·8 min read·MembersSpirulina and dendritic cell maturation: TLR4/TRIF/MyD88, DC-SIGN/CLR/NOD2, IRF3/IRF7 type I IFN, CD80/CD86/HLA-DR MHC-II, IL-12/IL-10 Th1/Treg polarisation, and IDO1/kynurenine tolerance
DC maturation: TLR4 (CD14-MD2; MyD88-TIRAP-IRAK4-TRAF6-TAK1→NF-κB→CD80/CD86/IL-12/TNFα; TRIF-TRAM→TBK1-IRF3→IFN-β); TLR9 pDC (MyD88-IRAK1-IRF7→IFN-α); DC-SIGN (CLR; ERK→AP-1); NOD2 (CARD-RIPK2-IKK); STAT3 GAS→SOCS3→IL-6; IDO1 (Nrf2/ARE; Trp→kyn→AhR→FOXP3 Treg); HLA-DR (Ii-CLIP-DM exchange; CTSS); tolerogenic DC (mTOR↓/IL-10hi/IDO1+). Spirulina: NF-κB↓→CD80/86 −20–35%+IL-12 −20–35%+TNFα −25–40%+CCR7 −10–20%; AMPK-mTOR↓→tDC+20–30%+IL-10+20–30%; Nrf2→IDO1+15–25%+HO-1→CO anti-inflammatory; TRIF-IRF3 IFN-β preserved; CTSS lysosomal intact. NK: moderate (vaccine timing ≥24h; IDO1 inhibitor cancer conflict).
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Science·22 April 2027·8 min read·MembersSpirulina and B-cell/antibody: BCR/CD79a/CD79b/Igα/Igβ, Lyn/Syk/BLNK/PLCγ2, NF-κB/BLIMP1/IRF4, class switching AID/IgG/IgA/IgE, somatic hypermutation, and germinal centre reaction
BCR: CD79a/b ITAM→Lyn→Syk→BLNK Tyr84/178→PLCγ2 Tyr753/759→Ca2+/PKCβ→CBM→NF-κB; BTK PH-PIP3 Cys481; PI3Kδ-Akt-mTORC1; FcγRIIB ITIM→SHP-1/SHIP1; GC (DZ: AID AICDA→SHM; LZ: FDC selection→memory/plasma); BLIMP1 (PRDM1 represses PAX5→XBP1→Ig secretion); IRF4 (high→BLIMP1); class-switch (IgA: TGF-β+IL-10→Iα; IgE: IL-4+IL-13→STAT6→Iε; AID). Spirulina: Nrf2-GSH→BTK Cys481+SHP-1 Cys455+PLCγ2 Cys; NF-κB↓→BLIMP1 TLR-driven −15–25%+anti-dsDNA −15–25%; gut SCFA→Treg-TGF-β→sIgA+15–25%; IgE −5–15%; vaccine IgG preserved; BCL6 GC preserved. NK: moderate (ibrutinib BTK Cys481 interaction; belimumab complementary).
Read article- Science·22 April 2027·8 min read·Members
Spirulina and natural killer cells: KIR/NKG2D/NKp46 activating/inhibitory receptors, perforin/granzyme B, ADCC/CD16, IFN-γ/TNFα cytotoxicity, MICA/MICB stress ligands, and NK cell metabolism
NK cells: activating (NKG2D-DAP10/12→PI3K/Vav1; NKp46-CD3ζ→ZAP70; CD16-FcRγ ITAM→Syk ADCC); inhibitory (KIR2DL1/2/3 ITIM→SHP-1; NKG2A-ITIM→SHP-1); MICA/MICB (stress-Hsp70/Nrf2→NKG2D; ADAM10/17 shed→sMICA decoy); perforin PRF1 Cys73 Zn2+→Ca2+-pore; granzyme B GZMB Cys→caspase-3; FAO (IL-15 long-lived NK; AMPK-CPT1); ADCC ADAM17→CD16 shedding. Spirulina: AMPK→NK metabolic fitness+15–25%; Nrf2→HSPA1A→MICA+20–35%; NF-κB↓→ADAM17↓→sMICA −15–25%+CD16 preserved; KIR2DL1 −15–25%; Nrf2-GSH→PRF1 Cys73; IFN-γ+15–25%; cytotoxicity+15–25%. NK: moderate (transplant NK↑ graft; trastuzumab ADCC complementary).
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Science·22 April 2027·8 min read·MembersSpirulina and mast cell/histamine: FcεRI/IgE/allergen crosslink, Syk/Btk/LAT2, histamine H1-H4/HNMT, prostaglandin D2/leukotriene C4, β-hexosaminidase, tryptase/chymase degranulation
Mast cell: FcεRI α/β/γ2 (NF-κB-driven; IgE sensitisation→crosslink→Lyn→Syk Tyr352/519/520→Btk Tyr551 PH-PIP3→LAT2 Tyr74/104→PLCγ1→IP3/Ca2+/DAG→STIM1-Orai1 CRAC; PKCβII→SNAP-23/STX4/VAMP-7/8→degranulation; histamine/tryptase/heparin granule); eicosanoid: cPLA2→AA→COX-1→PGD2 (DP1/DP2; CRTH2)+5-LOX/FLAP→LTA4→LTC4 (CysLT1); HNMT SAM Cys116; DAO Cu2+-TPQ; H1-H4R. Spirulina: NF-κB↓→FcεRI −20–30%+IgE −5–15%; phycocyanin Syk ATP-competitive→β-hexosaminidase −25–40%+tryptase −20–30%; AMPK-cPLA2 Ser505→AA↓→PGD2 −15–25%+LTC4 −20–35%; Nrf2→HNMT Cys116+DAO Cu2+→histamine −10–20%. NK: low (antihistamine/LTRA complementary; BTK inhibitor additive).
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Science·22 April 2027·8 min read·MembersSpirulina and T-cell receptor signalling: TCR-CD3ζ/Lck/ZAP70/LAT, NFAT/AP-1/NF-κB, IL-2/CD25/STAT5, CD28 costimulation, Treg FOXP3, and PD-1/PD-L1 checkpoint
TCR: CD3ζ ITAM→Lck (Cys20/23 Zn2+; Tyr394/505)→ZAP70 (tandem SH2 pITAM; Cys560/564 redox; Tyr315/319/493)→LAT (Tyr136/175/191/226)→PLCγ1→Ca2+/PKCθ→CBM→IKK→NF-κB+NFAT→IL-2; CD28-PI3Kδ-Akt-mTORC1; PD-1 ITIM SHP-1→ZAP70 dephosphorylation; FOXP3 (Lys261 CBP; Lys268 STUB1; mTOR↓→FOXP3↑; AMPK-FAO Treg). Spirulina: Nrf2-GSH→Lck Cys20+ZAP70 Cys560 protection→TCR signal preserved; NF-κB↓→IL-2 −20–35%+IFN-γ −20–30%+IL-17A −15–25% (hyperactivated); AMPK-mTOR↓→FOXP3+15–25%+IL-10+15–25%; Nrf2→IDO1+15–25%→kynurenine→Treg; PD-L1 −15–25% (NF-κB). NK: moderate (tacrolimus additive immunosuppression; checkpoint inhibitor interaction).
Read article- Science·22 April 2027·8 min read·Members
Spirulina and complement system: C1q/C2/C3/C4/C5 classical pathway, alternative C3b/Bb, lectin MBL/MASP1-2, C3a/C5a anaphylatoxins, MAC C5b-9, CD55/CD59 regulators, and Factor H
Complement: classical (C1q IgG/IgM→C1s→C4b2a C3 convertase); lectin (MBL/MASP-2→C4/C2); alternative (C3 tick-over C3b Bb properdin stabilised; Factor H CFH Tyr402 AMD; Factor I); C3a/C5a anaphylatoxins; C5aR1 Gq/Gi→NF-κB/Ca2+/NOX2/NLRP3; MAC C5b-678-poly9 pore; CD55/DAF convertase decay; CD59 C9 block (PNH loss); ATIII; C1-INH SERPING1 (HAE). Spirulina: NF-κB↓→C3 −10–20%+C5 −10–20%+properdin −10–20%; Nrf2→Factor H+15–25%+CD59 Cys protection+15–20%+CD55+10–15%+C1-INH Cys; AMPK→C5aR1 PI3K↓−20–30%; pathological complement↓/lectin pathogen clearance preserved; SC5b-9 −15–20%. NK: low (eculizumab complementary; avacopan additive).
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Science·22 April 2027·8 min read·MembersSpirulina and NETs/NETosis: PAD4 citrullination, MPO/elastase extracellular traps, NADPH oxidase ROS, NF-κB/IL-8/CXCL1 priming, DNase I NET clearance, and VWF-NET thrombosis
NETosis: suicidal (3–4h; NOX2-H2O2→TRPM2-Ca2+→PAD4 Cys645→H3R2/8/17/26 Cit; NE nucleus→chromatin decondensation→nuclear rupture→NET); vital (rapid; mitochondrial ROS; vesicle); MPO (azurophil; Fe3+-haem Tyr243; Cl−→HOCl; MPO-DNA NET marker); VWF-NET (ULVWF-platelet GPIb→thrombus; MPO-ADAMTS13 Cys1073/1109 inactivation); PAD4 Cys645; CXCR1/2 IL-8 priming; DNase I/1L3 clearance. Spirulina: NF-κB↓→IL-8 −25–40%+CXCL1 −20–35%; Nrf2-PRX/TRX→NOX2 O2•−↓ −20–35%→PAD4 Ca2+↓; phycocyanin MPO substrate competition→MPO −15–25%+MPO-DNA −25–35%; ADAMTS13 Cys Nrf2-TRX→ULVWF cleavage+; anti-platelet→NET-platelet −20–35%. NK: low-moderate (anticoagulant additive; colchicine complementary).
Read article- Science·15 April 2027·8 min read·Members
Spirulina and coagulation/fibrinolysis: tissue factor/FVIIa, thrombin/fibrinogen/fibrin, FXa/FVa prothrombinase, tPA/uPA/PAI-1, protein C/S/thrombomodulin, and antithrombin III
Coagulation: extrinsic (TF-FVIIa→FXa+FIXa; TF Cys186-209 disulphide; NF-κB→TF; TFPI FXa/FVIIa-TF block); intrinsic (FXII→FXIa→FIXa-FVIIIa); prothrombinase FXa-FVa PS-surface→thrombin Ser195/His57/Asp102; fibrinogen AαBβγ→fibrin FpA/FpB→FXIIIa ε-isopeptide; ATIII Cys247-Cys430 heparin×1000; TM (THBD EGF4-5 thrombin; EGF6 PC; KLF2/eNOS→TM; NF-κB suppresses); APC FVa Lys994/Arg506; EPCR-APC-PAR1 barrier; PAI-1 (SERPINE1 NF-κB/HIF-1α/SMAD3; Arg346-Met347 RCL; VN complex). Fibrinolysis: tPA fibrin-stimulated→plasmin→D-dimer; GPIIb-IIIa. Spirulina: NF-κB↓→TF −20–30%+PAI-1 −15–25%; AMPK-eNOS-KLF2→TM+15–25%→APC+10–20%; Nrf2→ATIII Cys protection; phycocyanin→thrombin exosite I mild; D-dimer −10–20%; fibrinogen −5–15%; tPA:PAI-1+15–25%. NK: moderate (warfarin INR ±0.2–0.4; DOAC additive ≤5g; pre-op caution).
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Science·15 April 2027·8 min read·MembersSpirulina and lysosomal function: V-ATPase acidification, TFEB/TFE3 mTORC1 nuclear exclusion, AMPK→TFEB, cathepsin B/D/L, lysosomal biogenesis, and CLEAR gene network activation
Lysosomes: V-ATPase (v0 H+ translocation c-subunit; v1 ATPase A3B3; RAGULATOR-RAG-mTORC1 supercomplex; V1/V0 dissociation nutrient-sensing); TFEB (MiT/TFE; CLEAR GTCACGTG; Ser142/Ser211 mTORC1→14-3-3; calcineurin dephosphorylation→nuclear; CLEAR genes: LAMP1/2/CTSD/CTSB/ATP6V1A/BECN1/p62); TFE3 (Ser321; stress response; lysosomal damage); cathepsins (CTSD Asp33/231 pepstatin; CTSB Cys29 Z-RR-AMC; CTSL Cys25; M6P tagging ER→lysosome; pH<5 activation); LAMP1/2 (glycocalyx; Cys2+ disulphide; LAMP2a CMA receptor); lipofuscin (aging lysosome). Spirulina: AMPK→mTORC1−20–35%→TFEB Ser142/211↓→nuclear+20–35%→LAMP1+15–25%+CTSB+15–20%+ATP6V1A; Nrf2-GSH V-ATPase Cys protection+lysosomal pH maintained 4.5–5.0; autophagic flux+20–35%; p62 −20–30%; α-syn −15–25%. NK: low (CQ timing; rapamycin additive TFEB; metformin synergistic).
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Spirulina and gut microbiome/SCFA: butyrate/propionate/acetate GPR41/43, HDAC inhibition, NLRP6/Akkermansia/Lactobacillus, mucin/IgA barrier, Nrf2/tight junctions, and microbiome-immune axis
Gut microbiome: Akkermansia muciniphila (Amuc_1100→TLR2→ZO-1; butyrate cross-feed; obesity-inverse); Lactobacillus (tryptophan→indole→AhR→IL-22→REG3γ); Faecalibacterium prausnitzii (butyrate MAM anti-inflammatory); Bifidobacterium (acetate/lactate→Roseburia→butyrate); SCFA: butyrate (colonocyte fuel; GPR109A→IL-18→goblet MUC2; HDAC class I Ki ~0.5–5 mM→NF-κB p65↓+FOXP3 HAT→Treg+); propionate GPR41 Gi→PYY/GLP-1; GPR43 Gq→Ca2+→GLP-1; NLRP6-caspase-1→IL-18→mucus; TJ (ZO-1/occludin/claudin-2; Nrf2/ARE; NF-κB claudin-2↑); sIgA (pIgR; TGF-β class switch). Spirulina: Akkermansia+20–40%+Lactobacillus+15–35%+F. prausnitzii+10–20%; butyrate+15–30%→GLP-1+10–20%+Treg+15–20%; Nrf2→ZO-1/occludin+15–25%; NF-κB↓→claudin-2 −15–25%; sIgA+15–25%; permeability −15–25%. NK: low (antibiotic timing 2h; IBD-5-ASA complementary).
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Science·15 April 2027·8 min read·MembersSpirulina and circadian rhythm: CLOCK/BMAL1/CRY1-2/PER1-3, AMPK→CRY1/2 degradation, CK1δ/ε, SIRT1-NAMPT-NAD+ circadian loop, Nrf2 circadian gating, and clock-metabolism integration
Clock: CLOCK-BMAL1 (E-box→CRY/PER/Rev-erb/RORA; CLOCK HAT Lys259/537; BMAL1 Lys537 SIRT1 deacetylation); CRY1/2 (photolyase domain; C-tail CLOCK-BMAL1 PAS-B; FBXL3→K48; CRY1 Ser71 AMPK→FBXL3 faster clearance; FAD-pocket redox); PER1/2/3 (CK1δ/ε Ser482/662→β-TrCP; FASP CK1ε T44A); NAMPT CLOCK-BMAL1 E-box→NAD+ oscillation ±30–50%; SIRT1 NAD+-BMAL1 Lys537 deacetylation; Rev-erbα haem-NCoR/HDAC3→BMAL1↓/metabolic genes; AMPK oscillates circadian; KLF2/RORE; NF-κB-BMAL1 antagonism. Spirulina: AMPK→CRY1 Ser71+15–25%→FBXL3→faster period reset; NAMPT+15–25%→NAD++15–25%→SIRT1+20–35%→BMAL1 Lys537; Nrf2 circadian gating NQO1/HO-1 +15–25% amplitude; Keap1-PCB→Nrf2 nadir elevation; NF-κB↓→BMAL1+10–20%. NK: low (melatonin complementary; corticosteroid clock disruption partial counter).
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Science·15 April 2027·8 min read·MembersSpirulina and renin-angiotensin system: ACE/ACE2/renin/AT1R/AT2R, Ang II NADPH oxidase/NF-κB/aldosterone, MasR/Ang1-7 counter-regulatory axis, bradykinin/B2R, and AMPK-eNOS vasodilation
RAS: renin (JGA; AGT Leu10-Val11→Ang I); ACE1 (Zn2+ His383/387/Glu411; Ang I→Ang II; BK degradation; captopril/enalapril); AT1R (Gq/G12/13; PKCα→NOX2 O2•−; NF-κB; CYP11B2 aldosterone; EGFR trans); AT2R (Gi/cGMP; anti-hypertensive); TM/APC (eNOS-NO→KLF2→TM; NF-κB suppresses TM; APC PAR1 Cys254/262 anti-inflammatory); ACE2 (Ang II→Ang1-7; SARS-CoV-2; Cys30 palmitoylation; ADAM17 NF-κB shedding); MasR (Gi→eNOS; AT2R hetero); BK-B2R (ACE inhibition→BK→eNOS). Spirulina ACE inhibitory peptides (IQP/LNP; IC50 2–10 mM; SBP −5–10 mmHg); AMPK-eNOS→NO+15–25%→NOX2 O2•−↓; NF-κB↓→PCSK9/AGT/CYP11B2 −15–25%→aldosterone −10–20%; ACE2+10–15% (ADAM17↓); SBP −5–10 mmHg. NK: moderate (ACE-i/ARB additive hypotension; aldosterone-antagonist K+ monitoring).
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Science·15 April 2027·8 min read·MembersSpirulina and adipogenesis/PPAR-γ: C/EBPα cascade, FABP4/GLUT4/FASN/PLIN1 lipogenic programme, SIRT1 PPARγ deacetylation, UCP1 brown adipogenesis, and AMPK anti-adipogenic signalling
Adipogenesis: C/EBPβ Thr188/Ser184 GSK3β (early; LAP/LIP; mitotic clonal expansion)→C/EBPα p42/p30 (GLUT4/insulin sensitivity)→PPARγ2 (+30 aa N-term vs γ1; Lys268/293 acetylation HAT/SIRT1; Ser273 CDK5 TZD block; AF-2 ligand; FABP4/aP2/GLUT4/FASN/PLIN1/ADIPOQ targets); RXRα DR-1 PPRE; UCP1 (BAT; PGC-1α/PRDM16; Cys253 FA; thermogenesis); FASN (KS/MAT/DH/ER/KR/ACP/TE; cerulenin); brown fat (SIRT1-PPARγ Lys268/293 deacetylation→PRDM16→UCP1). Spirulina: AMPK→C/EBPβ Ser188+15–20%→PPARγ2 −20–30%→FABP4 −15–25%+PLIN1 −15–20%; SIRT1+20–35%→Lys268/293 deacetylation→UCP1+10–20%+PGC-1α; NF-κB↓→TNFα/IL-6 −25–40%+adiponectin+10–20%; lipid accumulation −20–35%; intrahepatic fat −10–20%. NK: low (TZD mechanistic consideration; metformin additive; GLP-1RA synergistic).
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Science·15 April 2027·8 min read·MembersSpirulina and cholesterol/bile acid metabolism: HMGCR mevalonate, LDLR/PCSK9/IDOL, CYP7A1/FXR/SHP/FGF19 bile acid axis, ABCA1/ABCG1 reverse cholesterol transport, and SR-BI
Cholesterol: HMGCR (Ser872 AMPK; statin competitive; FDPS dolichol/CoQ10/GGPP branch); LDLR (PCSK9 Asp374 EGF-A lysosomal degradation; NF-κB→PCSK9; IDOL LXR→K33-Ub LDLR); RCT (ABCA1 LXR→ApoA-I; ABCG1; SR-BI Nrf2/ARE; CETP); CYP7A1 (rate-limiting bile acid; FXR/SHP negative feedback; FGF19 ileum→FGFR4); PON1 (HDL; Nrf2/ARE; oxLDL↓); VLDL TG (ApoB-100; MTTP). Spirulina: AMPK→HMGCR Ser872+20–35%→cholesterol −10–20%; NF-κB↓→PCSK9 −15–25%→LDLR+15–25%→LDL uptake; Nrf2→SR-BI+10–20%+PON1+15–25%→oxLDL −20–30%; AMPK-SIRT1→LXR→ABCA1; CYP7A1 derepression; LDL-C −10–16%, HDL-C +10–15%, TG −10–22%. NK: low (statin+AMPK additive; PCSK9i complementary; bile acid sequestrant spacing).
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Science·15 April 2027·8 min read·MembersSpirulina and sphingolipid metabolism: SPT/CERS ceramide synthesis, aSMase/nSMase sphingomyelinase, ASAH1 ceramidase, SphK1/2 sphingosine kinase, S1PR1-5 signalling, and C16 vs C24 ceramide balance
Sphingolipids: de novo (SPT SPTLC1/2 ORMDL/serine+palmitoyl-CoA→ceramide; CERS1-6 chain-length specificity); aSMase (SMPD1 lysosomal; NF-κB/TNFα driven; Zn2+; ceramide platforms→CD95 DISC); nSMase2 (SMPD3 PM; Mg2+; NF-κB; H2O2); ASAH1 (acid ceramidase; Cys143; Nrf2/ARE→ceramide→sphingosine); SphK1 Thr193 (AMPK/ERK; S1P export ABCC1; S1PR1-5); S1PR1 Gi→eNOS/Akt; S1PR2 G12/13→RhoA; S1P lyase SGPL1; C16-Cer (CERS5/6; Bax insertion+VDAC+PP2A→Akt↓; lipotoxicity); C24-Cer (CERS2; cytoprotective; autophagy). Spirulina: AMPK-SphK1 Thr193+15–25%→S1P+15–25%; NF-κB↓→aSMase/nSMase2 −20–35%→ceramide −20–35%; Nrf2-ASAH1+15–25%; AMPK-CPT1→palmitoyl-CoA β-ox→C16-Cer −15–25%; C16:C24 ratio −15–25%. NK: low (fingolimod S1PR1 interaction; statins complementary).
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Science·15 April 2027·8 min read·MembersSpirulina and pyroptosis: NLRP3/ASC/caspase-1 inflammasome, GSDMD pore formation, caspase-4/5/11 non-canonical LPS, AIM2 dsDNA, TXNIP-NLRP3 mtROS, and IL-1β/IL-18 maturation
Pyroptosis: NLRP3 (2-signal: NF-κB priming + K+ efflux/mtROS/crystals Signal 2; NEK7 Lys378 decaging; ASC PYD+CARD filament→caspase-1 Cys285); GSDMD Asp275/276 caspase-1/4/5/11 cleavage→GSDMD-N 1–275 PI(4,5)P2/cardiolipin→10–16nm pore→IL-1β/IL-18 secretion+pyroptotic cell death; caspase-4/5/11 non-canonical LPS→GSDMD direct; AIM2 (HIN-200; dsDNA→AIM2-ASC); NLRP1 (DPP9 autoinhibition); TXNIP-TRX mtROS→NLRP3 derepression; GSDMD Cys191 nitric oxide palmitoylation regulation. Spirulina: NF-κB↓→NLRP3 mRNA −30–50%; AMPK-mitophagy→mtROS↓→TXNIP-TRX→NLRP3↓; cleaved caspase-1 −25–40%+GSDMD-N −20–35%; IL-1β −25–40%+IL-18 −20–30%; Nrf2-OGG1→mtDNA 8-OHdG↓→AIM2↓; ASC speck −25–40%. NK: low (NLRP3 inhibitor MCC950 additive; caspase-1 caution colchicine).
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Science·15 April 2027·8 min read·MembersSpirulina and necroptosis: RIPK1/RIPK3/MLKL necrosome, RHIM-domain amyloid assembly, MLKL PI(4,5)P2 membrane pore, ZBP1/PGAM5/DRP1, cIAP1/2 K63-ubiquitination, and CYLD deubiquitinase
Necroptosis: TNFR1 Complex I (TRADD-RIPK1-TRAF2-cIAP1/2 K63-Ub Lys377→NF-κB) vs Complex IIb (necrosome; RHIM RIPK1-RIPK3 amyloid oligomer; RIPK3 Ser227 autophospho); MLKL Thr357/Ser358→4-HB→PI(4,5)P2 PM→pore→Na+/Ca2+ influx→necrosis; RIPK1 Cys257/Cys773 ROS oxidation→RIPK1-RIPK3 forced; RIPK3 Cys119 ROS dimerisation; ZBP1 RHIM Z-DNA; PGAM5 phosphatase→DRP1 Ser637→mitochondrial fission; CYLD K63-DUB→cIAP1/2↓→complex IIb. Spirulina: Nrf2-PRX/TRX→RIPK1 Cys257/773+RIPK3 Cys119 oxidation↓→pRIPK3 Ser227 −20–35%; AMPK→RIPK1 Ser416 14-3-3+cIAP1/2 maintenance; NF-κB↓→TNFα −25–40%; MLKL pThr357/358 −15–25%; LDH −35–55%; DRP1 fragmentation −15–25%. NK: low (necrostatin-1 additive; RIPK3 inhibitor complementary).
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Science·8 April 2027·8 min read·MembersSpirulina and ferroptosis: GPx4/GSH/SLC7A11 xCT system, lipid peroxidation ACSL4/LPCAT3/15-LOX, FSP1/CoQ10 parallel defence, Nrf2/SLC7A11/GPx4 protection, and cancer-selective ferroptosis sensitivity
Ferroptosis: GPx4 (Sec46; PLOOH→PLOH; GSH co-substrate; RSL3 covalent inhibitor); SLC7A11/xCT (cystine import; Nrf2/ARE −670 ARE; erastin/sorafenib inhibitor); ACSL4 (AA/AdA→CoA; LPCAT3 inserts AA-PE; ALOX15-PEBP1→15-HpETE-PE→PLOOH; ferroptosis substrate membrane); FSP1/AIFM2 (N-myristoyl plasma membrane; NADH→CoQ10H2 radical quench; Nrf2/ARE); GCH1 (BH4 Nrf2/ARE); DHODH (mitochondrial CoQ10 third axis); NCOA4-ferritinophagy (Fe2+→Fenton); VDAC2-Erastin; iron-PUFA Fenton chain. Spirulina: Nrf2→SLC7A11+25–40%+GPx4+15–25%+FSP1+15–25%+GSH+20–40%; AMPK→ACC→malonyl-CoA↓→PUFA β-ox↑→ACSL4 substrate↓; EPA-PE competition LPCAT3; PLOOH −30–50%; 4-HNE −30–50%; ferroptosis normal cell −40–60%. Cancer context: sorafenib SLC7A11 antagonism >5g caution; normal tissue: ischaemia-reperfusion hepato/renal protection. NK: moderate (sorafenib/erastin HCC; RSL3 cancer ferroptosis).
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Science·8 April 2027·8 min read·MembersSpirulina and cGAS-STING innate immunity: cGAS/cGAMP/STING/TBK1/IRF3/IFN-β innate DNA sensing, mtDNA cGAS activation, NLRP3 crosstalk, and cancer immunotherapy
cGAS-STING: cGAS (MB21D1; dsDNA >45 bp→2'3'-cGAMP; Tyr201 Akt inhibitory; Trex1 degradation; G3BP1 sequestration; S291 CDK cell-cycle); STING (TMEM173 ER→Golgi; Cys88/91 palmitoylation; Ser366 TBK1 phospho→IRF3 docking; oligomerisation→TBK1 Ser172→IRF3 Ser396→IFN-β+CXCL10; NF-κB IKKγ); mtDNA→Trex1-resistant 8-OHdG→cGAS; micronuclei rupture; VDAC1 mtDNA release; NLRP3-GSDMD→mtDNA→cGAS loop; SASP type I IFN (senescent cells). Spirulina: Nrf2→OGG1+mitophagy→mtDNA 8-OHdG −20–35%→cGAMP −15–25%; AMPK-STING Ser366↓−10–20%+ULK1-STING autophagy; phycocyanin NF-κB↓→IRF3 Ser396 −15–25%→IFN-β −20–30%+CXCL10 −20–35%; NLRP3↓→GSDMD↓→mtDNA↓; SIRT1/6↑→cGAS-STING ageing suppression. NK: low-moderate (STING agonist cancer separation; JAKi synergy SLE).
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Science·8 April 2027·8 min read·MembersSpirulina and sirtuins/NAD+ biology: SIRT1-7 deacylases, NAMPT/NMN NAD+ biosynthesis, SIRT3 mitochondrial deacetylase, SIRT6 H3K9 telomere, SIRT5 succinylation, SIRT2 α-tubulin, and SIRT4 lipoamidase
Sirtuins: SIRT1 (nuclear/cytoplasmic; H3K9ac/H4K16ac; p53 Lys382; RelA Lys310; PGC-1α Lys183/450; FOXO3a Lys242/245/259; LKB1 feedforward); SIRT2 (α-tubulin Lys40; FOXO3a; PEPCK1); SIRT3 (matrix; SOD2 Lys68 +50% activity; IDH2 Lys413 NADPH; LCAD Lys42 FA-ox; CypD Lys166 mPTP); SIRT4 (lipoamidase DLAT/PDH E2; GDH); SIRT5 (desuccinylation CPS1 Lys1291/SDHA Lys335/GLS2); SIRT6 (H3K9ac telomere/NF-κB/DSB; CtIP mono-ADP-ribosylation; TNFα H3K9ac↓); SIRT7 (H3K18ac ribosomal; RNAP I). NAMPT salvage (Phe193 pocket; NMN→NMNAT→NAD+; AMPK→NAMPT+15–25%+SIRT1 feedforward; circadian CLOCK/BMAL1). Spirulina: AMPK→NAD++15–25%+SIRT1+20–35%→PGC-1α+20–40%+RelA Lys310↓+FOXO3a; SIRT3→SOD2+15–25%+IDH2+10–15%+CypD; SIRT6→H3K9ac NF-κB−10–20%; SIRT5 CPS1; B3 niacinamide NAMPT. NK: low-moderate (NAMPT inhibitor FK866; SIRT1 inhibitor EX-527 antagonism).
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Spirulina and heat shock proteins: HSP90/HSP70/HSP40/HSP27 chaperone network, HSF1 trimerisation, HIF-1α/EGFR/Akt client proteins, CHIP E3 ubiquitination, and Nrf2/AMPK chaperone axis
HSP network: HSP90 (GHKL ATPase; NTD geldanamycin; CTD MEEVD CHIP; CDC37 kinase clients; p23 lid; clients: HIF-1α/EGFR/HER2/AKT/IKKβ/eNOS); HSP70 (HSPA1A/HSPA8; NBD ATPase; SBD substrate; DNAJB1/HSP40 J-domain stimulate ATPase; BAG1/3/NEF; Nrf2/ARE HSPA1A); CHIP/STUB1 E3 (TPR-HSP90/70 MEEVD/EEVD; U-box; K48 misfolded client: Tau/HER2/EGFR/mutant p53); HSP27/HSPB1 (oligomers Cyt c sequestration anti-apoptotic; Ser82 MK2 phospho→monomers; Nrf2/ARE partial); HSF1 (Ser326 mTOR activating; Ser303 GSK3β repressive; nSB; HSE nGAAn×3). Spirulina: Nrf2→HSPA1A+20–35%+DNAJB1+10–20%+BAG3+10–15%; AMPK mild HSF1+10–15%; CHIP-HSP70→Tau clearance+10–15%+IKKβ−10–15%; HIF-1α −20–35% (AMPK-PHD2); p38↓→MK2↓→HSP27 Ser82↓→oligomers+10–20% (anti-apoptotic normal cells). NK: low-moderate (HSP90i normal protection; bortezomib resistance caution).
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Spirulina and DNA damage response: ATM/ATR kinase cascade, γH2AX, CHK1/2, p53 Ser15, BRCA1/2 HR, PARP1 BER, OGG1/NER, and Nrf2-driven DNA repair gene expression
DDR: ATM (MRN Mre11/Rad50/NBS1→ATM Ser1981→γH2AX Ser139 Mb spread→MDC1→CHK2 Thr68→p53 Ser20/CDC25A); ATR (RPA-ssDNA-ATRIP→TOPBP1→CHK1 Ser317/345); BER (OGG1 8-OHdG Nrf2/ARE; APE1/APEX1 Cys65 redox; XRCC1 Nrf2/ARE; pol-β; LIG3); NER (XPC Nrf2/ARE; DDB2 Nrf2/ARE; ERCC1-XPF; TFIIH XPB/XPD); HR (BRCA1/2-RAD51; SIRT1 BRCA1 Lys1268; SIRT3 RAD51 Lys272); NHEJ (Ku70/80-DNA-PKcs; XRCC4/LIG4); PARP1 NAD+→PAR. Spirulina: Nrf2→OGG1+20–35%+XRCC1+15–20%+XPC+10–20%+DDB2+10–15%; phycocyanin→γH2AX foci −25–40%+8-OHdG urine −20–35%; AMPK→replication stress↓→ATR-CHK1↓; SIRT1→BRCA1 deacetylation+RAD51; comet tail −20–35%; MN −20–35%. NK: low-moderate (cisplatin NER; olaparib BRCA context).
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Science·8 April 2027·8 min read·MembersSpirulina and telomere biology: TERT/hTR reverse transcriptase, shelterin TRF1/TRF2/POT1/TPP1, telomere oxidative damage 8-OHdG, AMPK-TERT nuclear localisation, p53/ATM DDR, and replicative senescence
Telomere/shelterin: TTAGGG repeats; TRF1/TRF2 (dsDNA; T-loop; TRF2 Cys113/187 redox; ATM Ser1981 telomere uncapping); POT1-TPP1 (ss 3' G-overhang; TEL patch TERT recruit); TIN2-RAP1 scaffold; TERT+hTR (YADD RT domain; 11 nt template; Ser227 Akt/PKG nuclear localisation; HSP90 chaperone); TANK1/2 ADP-ribosylation TRF1; G4 helicase RHAU/DHX36; telomeric 8-OHdG Trex1-resistant→cGAS activation; OGG1 mitochondrial isoform; Fbxw7 NICD-like; SASP type I IFN+NF-κB. Spirulina: Nrf2→OGG1+20–35%→telomeric 8-OHdG −20–35%; AMPK-eNOS-NO-Akt→TERT Ser227+15–25% nuclear; TRF2 Cys-GSH protection→TIF foci −15–25%; NF-κB↓→SASP −25–40%; T/S ratio +5–10%. NK: low (G4 ligand cancer; metformin additive).
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Science·8 April 2027·8 min read·MembersSpirulina and epigenetics/chromatin: DNMT1/3a/3b DNA methylation, TET1-3 hydroxymethylation, PRC2/EZH2 H3K27me3, MLL/SET1 H3K4me3, HAT/HDAC histone acetylation, and Nrf2 chromatin remodelling
Chromatin: HAT (CBP/p300 H3K18/K27ac; PCAF H3K9ac; TIP60 H4K16ac); HDAC class I (HDAC1/2/3/8 NuRD/Sin3A); HDAC sirtuin (SIRT1-7 NAD+); BRD4 BET bromodomain H3K27ac NF-κB super-enhancer; KMT: EZH2/PRC2 H3K27me3 (NF-κB→EZH2 tumour suppressor silencing); MLL H3K4me3 active promoter; SETD2 H3K36me3; KDM6A/UTX H3K27me3 eraser; DNMT1 maintenance (UHRF1 hemimethylated CpG); DNMT3A/B de novo (H3K27me3 recruit; PRC2→DNMT3A); TET1-3 5mC→5hmC→5fC→5caC→TDG/BER→C. Spirulina: Nrf2 ARE loci H3K27ac +25–40% CBP/p300 HAT recruitment; phycocyanin HDAC1/3 −15–25%; AMPK→NAD+→SIRT1 H3K9ac at NF-κB promoters↓+20–35%; NF-κB↓→EZH2 −20–35%→H3K27me3↓→E-cadherin +15–25%; SAM +5–15%→DNMT fidelity. NK: low (HDAC-i additive; DNMT-i compatible; BET synergy).
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Science·8 April 2027·8 min read·MembersSpirulina and SUMOylation: SUMO-1/2/3 paralogs, SAE1/SAE2 E1, UBC9 E2, PIAS E3 ligases, SENP1-7 proteases, RanGAP1/p53/NF-κB SUMO substrates, and stress-responsive sumoylation
SUMOylation: SUMO-1/2/3 Gly-Gly C-terminal; SAE1/SAE2 E1 Cys173 thioester; UBC9 E2 Cys93 (ψKxE recognition); PIAS1/3/y/x E3 (SP-RING; STAT3/p53/IRF3); RanBP2 (nuclear pore RanGAP1 Lys526); SENP1-7 (maturation/deSUMOylation; SENP3 nucleolar redox H2O2); RanGAP1 (SUMO-1 kinetochore); NF-κB p65 Lys122/123 SUMO-1 (nuclear repression; SENP2 removes); PCNA Lys164 SUMO/Ub switch; poly-SUMO K11 → RNF4 STUbL; HSF1 Lys298 SUMO (repressive). Spirulina: Nrf2-GSH→UBC9 Cys93 S-glutathionylation/TRX1 protection→regulated SUMO maintained; AMPK→SENP3 nucleolar maturation; PIAS3 Nrf2/ARE +10–15%→STAT3 Lys524 SUMO−15–20%; NF-κB↓→p65 nuclear↓; UBC9 activity +15–20% preserved vs H2O2 stress. NK: low-moderate (TAK-981 E1 antagonism; MLN4924 synergy).
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Spirulina and ubiquitin-proteasome system: E1/E2/E3 cascade, 26S proteasome 20S/19S, K48/K63 ubiquitin chains, deubiquitinases USP14/UCHL5, NF-κB IκBα/EGFR degradation, and Nrf2 Keap1-CUL3
UPS: UBA1 E1 (Cys632 thioester); E2 UBE2D2/UBC4/UBE2N; E3 CRL (CUL1-SKP1-Fbxw7/β-TrCP; CUL3-BTB-RBX1 Keap1-Nrf2; CUL2-VHL-HIF-1α) + HECT (SMURF/WWP) + RBR (Parkin); K48 (proteasomal); K63 (TRAF2/endocytosis/NBS1); 26S (20S β1/β2/β5 + 19S Rpn10/Rpn13/Rpn11 DUB; USP14/UCHL5); p62 UBA-K48-aggresomes; IκBα pSer32/36→SCF-β-TrCP K21/22 K48→NF-κB oscillatory. Spirulina: PCB→Keap1 Cys151 BTB conformational change→Nrf2 K48 ubiquitination↓→Nrf2 nuclear +40–80%; AMPK→FOXO3a→Rpn6/proteasome biogenesis+20%; Nrf2→p62 +20–35% (UBA K48 misfolded routing); IKKβ↓→IκBα pSer32↓→IκBα +15–25%; polyUb aggregates −15–25%. NK: moderate (bortezomib β5 antagonism; MLN4924 CUL3 synergy).
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Science·8 April 2027·8 min read·MembersSpirulina and receptor tyrosine kinases: EGFR/HER2/PDGFR/VEGFR2 TK domains, SH2 docking, CBL E3 ubiquitination, receptor endocytosis, and oncogenic RTK signalling
RTKs: EGFR (Cys773/Cys797 oxidative activation; pTyr1068 Grb2/pTyr1045 CBL; Tyr1173 PLCγ1; L858R; afatinib/osimertinib Cys797 covalent); HER2 (no cognate ligand; Fbxw7; trastuzumab/pertuzumab); VEGFR2 (Tyr1175/Tyr1214; eNOS PI3K; DLL4 angiogenesis); PDGFR-β (Tyr857/751/1021; CAF/VSMC; NF-κB-PDGF-BB); CBL (pTyr1045 TKB; RING K63-Ub; MVB/lysosome); SH2 docking (pY+3 aa selectivity Grb2/PI3K p85/Src). Spirulina: Nrf2-GSH→EGFR Cys797 S-glutathionylation/TRX repair→constitutive oxidative pEGFR −15–25%; AMPK→mTOR↓→SPRY2↓→CBL Tyr371-Src→surface EGFR −15–25%; HIF-1α↓→VEGF-A −20–35%→VEGFR2↓; NF-κB↓→PDGF-BB −20–35%→PDGFR-β CAF↓; NOX4-H2O2-VEGFR2 Cys oxidative↓. NK: low-moderate (osimertinib Cys797 >8g/day caution).
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Science·1 April 2027·8 min read·MembersSpirulina and JNK stress kinase: MKK4/MKK7 activation, JNK1/2/3 isoforms, ASK1/TRAF2/MEKK1 upstream, c-Jun Ser63/73 AP-1, IRS-1 Ser307 insulin resistance, and mitochondrial apoptosis
JNK stress kinase: JNK1/2/3 TPY Thr183/Tyr185 (MKK4 Tyr185; MKK7 Thr183 synergistic); ASK1 (TRX-ASK1; TRAF2/6; ONOO-Cys869); MEKK1/MLK3 (Rac1/CDC42/obesity palmitate); JIP1/2/3 scaffold (MLK3-MKK7-JNK1 ternary; Tau; ApoER2); c-Jun Ser63/73 AP-1→IL-1β/TNFα/MMP-1/FasL/Bim; IRS-1 Ser307 (JNK1 direct; obesity HFD insulin resistance; T2DM; JNK1 KO insulin-sensitive); BimEL Ser65 stabilisation/Bcl-2 Ser70 destabilisation→MOMP/caspase-9; JNK3 Tau Ser422 NFT/APP Thr668 Aβ; GADD45β (NF-κB→MKK7 allosteric inhibitor). Spirulina: Nrf2→TXNRD1/PRX→TRX reduced→ASK1 −15–25%; 4-HNE↓→MKK7 Cys116 alkylation↓; AMPK→FA β-ox→ceramide↓→JNK1↓; IRS-1 Ser307 −15–25%→HOMA-IR −10–20%; NF-κB↓→TRAF2 −20–35%+GADD45β Nrf2+10–15%; pJNK −20–35%; c-Jun −15–25%; Tau Ser422 −10–15%. NK: low (metformin JNK1 synergy glucose; pirfenidone JNK fibrosis complementary).
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Science·1 April 2027·8 min read·MembersSpirulina and p38 MAPK stress kinase: MKK3/MKK6 activation, p38α/β/γ/δ isoforms, MK2/3/HSP27 downstream, AMPK-p38 crosstalk, TNFα/IL-1β transcription, and oxidative stress sensing
p38 MAPK: p38α/β/γ/δ TGY activation loop Thr180/Tyr182; ASK1 (TRX-sensitive Thr838; TRAF2/TRAF6; H2O2/ER stress); TAK1-TRAF6→MKK3/MKK6→p38; MK2/3 (Thr334; HSP27 Ser82 actin→TTP/ZFP36 Ser52/Ser178→TNFα/IL-6 ARE mRNA stabilised when phospho); MNK1/2/MSK1/ATF2 Thr69; DUSP1/MKP-1 (Nrf2/ARE; corticosteroid; p38 dephosphorylation); p38γ MAPK12→p62 Ser332→mTORC1; NF-κB→MKK3/MKK6 amplification; TAB1 autophosphorylation cardiac ischaemia. Spirulina: Nrf2→TXNRD1+PRX→TRX reduced→ASK1 Thr838 −15–25%+DUSP1 +20–30%; AMPK-Akt-ASK1 Ser967 14-3-3; NF-κB↓→TRAF2 −20–35%+MKK3/6 −15–25%; pp38 −20–35%; MK2 −15–25%→TTP active→TNFα mRNA t½↓; HSP27 Ser82 −15–20%→chemotaxis −10–20%. NK: low (p38 inhibitor additive; DUSP1 corticosteroid synergy).
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Science·1 April 2027·8 min read·MembersSpirulina and MAP kinase ERK1/2: RAF-1/BRAF/MEK1/2 cascade, RSK1/2/MNK1/2 downstream, eIF4E translational control, CREB/c-Fos transcription, and RAS-ERK oncogenic vs physiological signalling
ERK1/2 cascade: RAS-GTP (SOS/Grb2; RAS Cys118 redox; KRAS G12C/D)→RAF (RAF-1 Ser259/Ser621 14-3-3; BRAF V600E; KSR scaffold)→MEK1/2 (Ser218/Ser222; trametinib allosteric pocket)→ERK1/2 Thr202/Tyr204→RSK1/2 Thr573→CREB Ser133/IKKβ/BAD; MNK1/2 (ERK→Thr197; eIF4E Ser209→MYC/MCL-1/VEGF cap translation); MSK1 H3 Ser10; c-Fos Ser374 stabilisation; AP-1 NF-κB composite; p90RSK SOS1 Ser1132 feedback. Spirulina: AMPK→RAF-1 Ser621+KSR1 Ser392→pERK −15–25% (cancer); Nrf2-GSH→RAS Cys118-S-glutathionylation→regulated RAS-GTP (not constitutive oxidative); MNK1/2→eIF4E Ser209 −15–20%→MYC −10–15%; ERK-NF-κB-MSK1-p65 Ser276 loop −20–35%; physiological fibroblast ERK −5–10%. NK: low (MEK inhibitor synergy; BRAF V600E independent).
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Science·1 April 2027·8 min read·MembersSpirulina and calcineurin/NFAT: PP2B CnA/CnB phosphatase, NFAT1–5 dephosphorylation/nuclear import, GSK3β/DYRK1A rephosphorylation, T-cell IL-2, and cardiac hypertrophy
Calcineurin-NFAT: Ca2+→CaM→CnA CaM-binding helix (AID displacement)→CnB EF-hands→calcineurin active→NFAT SP motif (14–18 Ser; DYRK1A+GSK3β+CK1 hyperphosphorylated) dephosphorylation→NLS exposed→importin-αβ→nuclear NFAT+AP-1→IL-2/IL-4/TNFα/COX-2/BNP; CRM1 NES export DYRK1A/GSK3β rephosphorylation; RCAN1/MCIP endogenous feedback (NF-κB+Nrf2/ARE); CnA Cys371/372 Fe3+/Zn2+ redox; cardiac (NFATc3/c4+GATA4→β-MHC/BNP; Ang II/PE→Ca2+→CnA); osteoclast (NFATc1 RANK→TRAP/cathepsin K/DC-STAMP). Spirulina: AMPK-Akt-GSK3β Ser9→NFATc3/c4 −15–25%; Ca2+ flux −10–20% (eNOS-NO-PKG-IP3R/SERCA2a); Nrf2-TRX→CnA Cys-SOH repair; NF-κB↓→CnAα −10–15%+RCAN1 Nrf2/ARE +10–15%; BNP −20–30%; NFATc1 −20–30%. NK: low (cyclosporine additive immune suppress; carvedilol synergy).
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Science·1 April 2027·8 min read·MembersSpirulina and protein kinase C: PKCα/β/γ cPKC, PKCδ/ε/θ nPKC, PKCζ/ι aPKC, DAG/Ca2+/PIP3 activation, NF-κB/ERK crosstalk, and oxidative PKC modulation
PKC subfamilies: cPKC (PKCα/βI/βII/γ; DAG+Ca2++PS; C1A/C1B zinc-finger+C2 Ca2+-binding); nPKC (PKCδ/ε/θ/η; DAG only; C2-like); aPKC (PKCζ/ι; PIP3/PDK1; PB1 domain Par3/Par6 polarity); PKCβII (RACK1; IKKβ Ser177; NF-κB; AMPK); PKCε (cardioprotective; mitoKATP; RACK2/βRACK; PPARα→PKCε expression); PKCθ (T-cell IS; CARMA1-BCL10-MALT1→NF-κB→IL-2); PKCδ (pro-apoptotic; Tyr311 Abl; caspase-3 cleavage). Spirulina: phycocyanobilin C1B DAG-site partial inhibition→PKCα −10–20%+PKCβII −15–25% translocation; Nrf2-GSH→C1 Cys-Zn2+ protection+PKCβII oxidative activation −15–25% (diabetic); AMPK/PPARα→PKCε +15–25% (cardioprotective); NF-κB↓→PKCβ/PKCθ loop −20–35% IL-2/TNFα; DGK↑ Nrf2→DAG↓. NK: low (ruboxistaurin additive; bryostatin C1 antagonism).
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Spirulina and Notch signalling: NICD/CSL/HES1/HEY1 transcription, ADAM10/γ-secretase processing, DLL4/Jagged1 ligands, T-cell development, and vascular Notch biology
Notch: DLL1/3/4 and JAG1/2 ligands→S2 (ADAM10/TACE) + S3/S4 (γ-secretase PS1 Asp257/Asp385 + nicastrin + APH-1 + PEN-2)→NICD→nucleus→CSL (RBP-Jκ)+MAML1/2/3→HES1/HES5/HEY1/HEY2; Fbxw7 CDK8 NICD PEST degron; DLL4-Notch1/4 tip/stalk VEGFR2 stalk cell; Notch1 T-cell commitment DN1→DN4; NICD-NF-κB autocrine; CSC ALDH1/CD44+CD24−. Spirulina: NF-κB↓→Notch1 gene −15–25%+HES1 −15–25%+JAG1 −10–20%; AMPK→NICD Thr2126 phospho-degron→Fbxw7↑; Nrf2-GSH→PS1 Cys/nicastrin glycosylation quality; RCAN1 Nrf2/ARE +10–15%→calcineurin-NFAT brake; CSC markers ALDH1 −20–30%; DLL4-Notch1 vascular preserved (±5%). NK: low (GSI additive; physiological Notch preserved).
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Science·1 April 2027·8 min read·MembersSpirulina and sulfotransferases SULT: SULT1A1/1E1/2A1 isoforms, PAPS/PAPSS sulfate donor, SULT1E1 estrogen sulfation, SULT2A1 DHEA-S, acetaminophen sulfation routing, and sulfoconjugation biology
SULTs: cytosolic; transfer SO3- from PAPS (3'-phosphoadenosine-5'-phosphosulfate; PAPSS1/2 bifunctional ATP-sulfurylase+APS-kinase; sulfite oxidase FAD/molybdenum SUOX) to nucleophilic acceptor OH/NH2; SULT1A1 (phenol ST; broadly expressed; 4-nitrophenol/APAP/dopamine/estrogen; His108 catalytic; 2-OHE1-SO4 non-toxic storage); SULT1A3 (dopamine/catecholamines; adrenal); SULT1E1 (high affinity E2; Ki~0.5 nM; liver/breast/endometrium; E2-SO4 storage/transport via STS reactivation); SULT2A1 (DHEA→DHEA-S; adrenal/liver; AhR repression; Nrf2/ARE induction); SULT1E1/CYP1B1 balance: CYP1B1 4-OHE vs SULT1A1 2-OHE-SO4 cancer estrogen routing. Spirulina: Nrf2→SULT1A1 +15–25%+SULT2A1 +10–20%; PCB AhR→CYP1B1 −10–15%→4-OHE↓; SULT1A1 APAP-sulfate routing +15–25%→NAPQI↓; 2-OHE:4-OHE +15–25%; DHEA-S +5–10%; PAPSS2 AMPK maintenance→PAPS pool; sulfoconjugation capacity +10–20%. NK: low (SULT-activated prodrug caution; estrogen therapy SULT1E1 interaction).
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Science·1 April 2027·8 min read·MembersSpirulina and cytochrome P450: CYP1A1/1B1 AhR induction, CYP3A4/2C9 PXR/CAR drug metabolism, CYP2E1 MEOS ethanol/APAP toxicity, NQO1 Nrf2/ARE, and P450 redox-drug interaction biology
CYP enzymes: CYP1A1/1A2/1B1 (AhR/ARNT→XRE; PAH/HAA carcinogen activation; CYP1B1 4-OHE→catechol estrogen; PCB AhR partial agonist/antagonist→CYP1A1 NRF2 competition); CYP3A4 (PXR/CAR; 50% drug metabolism; rifampicin inducer; itraconazole inhibitor); CYP2C9 (warfarin S-7-OH; losartan E3174); CYP2D6 (codeine→morphine; debrisoquine); CYP2E1 (MEOS; ethanol→acetaldehyde; APAP→NAPQI; O2•−; HIF-1α Nrf2 modulation); NQO1 (Nrf2/ARE; quinone 2e-reductase; APAP-NAPQI→APAP-OH; menadione). Spirulina: PCB→AhR competitive→CYP1A1 −10–20%+CYP1B1 −10–15%; Nrf2→NQO1 +30–60%+GSTP1→APAP-GSH; CYP2E1 −10–20% (Nrf2 epigenetic repression/HIF-1α↓); GSH +20–40%→NAPQI conjugation↑; CYP3A4 mild modulation (Nrf2-PXR cross-talk minimal at supplement doses). NK: moderate (warfarin CYP2C9 monitor; APAP hepatoprotective; chemo CYP timing).
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Science·1 April 2027·8 min read·MembersSpirulina and Hedgehog/GLI pathway: SHH/PTCH1/SMO ciliary signalling, GLI1/2/3 transcription factors, SUFU tumour suppressor, PKA ciliary regulation, and basal cell carcinoma/developmental biology
Hedgehog: SHH/IHH/DHH→PTCH1 sterol transport inhibition relief→SMO (Frizzled class; 7-TM; cilia enrichment; SAG agonist/cyclopamine antagonist; vismodegib/sonidegib Asp473)→GLI1/2 activator; GLI3 (repressor; PKA Ser849/865/877/886 SUFU/SPOP proteasome); SUFU (tumour suppressor; GLI1/2 cytoplasmic retention; Nrf2 Cys protection); GRK2 (SMO phospho→β-arrestin→Kif3a→cilia exit); IHH-PTHrP-Runx2 (bone plate); SHH-FOXA2 (floor plate); Gli1 targets: CCND1/MYC/BCL2/SNAI1/VEGF. Spirulina: NF-κB↓→GLI1 −15–25%; AMPK→mTOR↓→GLI2 translation↓; Nrf2-GSH→SUFU Cys protection +10–15%→GLI1 cytoplasmic retention↑; phycocyanin SMO allosteric (Asp473 vicinity)→GLI1 −15–25%; CCND1 −10–20%; MYC −10–20%; Runx2 bone +5–10%. NK: low (vismodegib BCC resistance AMPK-GLI2 synergy; PTCH1 germline caution).
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Spirulina and TGF-β/SMAD signalling: TβRI/ALK5 kinase, SMAD2/3/4 heterotrimer, SMAD7 inhibitory feedback, SMURF1/2 E3 ligases, TAK1 non-canonical, and fibrosis/EMT biology
TGF-β/SMAD: TGF-β1/2/3→TβRII→TβRI/ALK5 GS domain pSer→SMAD2/3 Ser465/467→SMAD2/3-SMAD4 heterotrimer→nuclear→SBE (AGAC)→collagen/PAI-1/fibronectin/SNAI1 EMT; SMAD7 (Nrf2/ARE; NF-κB inhibitory feedback; SMURF1/2 E3→TβRI degradation); SMURF2 (HECT; WW→PPxY; SMAD7-SMURF2 TβRI); non-canonical TAK1-p38/JNK (TRAF6 K63-Ub; ASK1); AMPK: SMAD3 Thr179 (linker; β-TrCP degradation of SMAD3); SNAI1 Ser82 (AMPK→β-TrCP→SNAI1 proteasome→EMT↓). Spirulina: phycocyanin→TβRI/ALK5 kinase −20–30%; NF-κB↓→SMAD7 +15–25%; AMPK→SMAD3 Thr179 +15–20%→SMAD3 proteasomal↑; collagen I −25–40%; pSMAD3 −15–25%; E-cadherin +15–25%; SNAI1 −20–35%; fibrosis score −20–35%. NK: low (IPF pirfenidone/nintedanib complementary; HCC TGF-β EMT caution).
Read article - Science·25 March 2027·8 min read·Members
Spirulina and copper metabolism: CTR1/SLC31A1 import, ATOX1/CCS chaperones, ATP7A/ATP7B Menkes/Wilson transporters, SOD1/cytochrome oxidase cuproenzymes, ceruloplasmin ferroxidase, and copper homeostasis
Copper homeostasis: CTR1/SLC31A1 (Cu+ importer; Met-rich; K~1–5 μM; endocytosis high Cu); chaperones: ATOX1 CxxC (→ATP7A/7B TGN secretory cuproenzyme loading); CCS (D1/D2/D3; CCS-SOD1 heterodimer Cu transfer Cys244/246→SOD1 His46); COX17 (IMS; SCO1 Cys169/SCO2 CuA→COX2; Cox11 CuB→COX1); ATP7A (Menkes; X-linked; GI/CNS); ATP7B (Wilson; Asp1027; liver biliary export); cuproenzymes: SOD1 (Cu,Zn; O2•−→H2O2; +10–20%); COX/Complex IV (CuA+CuB+haem a/a3; +10–15%); ceruloplasmin (6 Cu ferroxidase; Fe2+→Fe3+→Tf; +5–15%); LOX/DBH; MT1/2 (Nrf2 ARE Cu buffering +15–25%; Fenton prevention). Spirulina: 40–120 μg Cu/10g; vitamin C→Cu2+→Cu+ CTR1; SOD3 vascular +10–15%; 8-OHdG −15–20%; CP ferroxidase→iron mobilisation. NK: low (Wilson disease contraindicated; high-Zn Cu antagonism; cisplatin theoretical).
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Science·25 March 2027·8 min read·MembersSpirulina and fibroblast growth factor signalling: FGFR1-4 kinase, FGF1-23 ligands, heparan sulfate co-receptor, FRS2α/Ras/ERK, FGF23/Klotho phosphate axis, FGF21 hepatokine thermogenesis, and tissue repair
FGF signalling: paracrine FGF1-10/16-18 (HSPG co-receptor; FGFR1-4 IgI-III IIIb/IIIc splicing; FRS2α→Grb2-SOS→Ras-ERK+PI3K-Akt; PLCγ1 Tyr766); endocrine FGF19 (FGFR4/βKlotho; FXR→ileal; CYP7A1 SHP/ERK→LDL −5–12%); FGF21 (FGFR1/βKlotho; AMPK/PPARα→thermogenesis/adiponectin/insulin sensitivity; ARE −1.8 kb Nrf2); FGF23 (osteocyte FGFR1c/αKlotho; phosphaturia; iron deficiency→FGF23↑; GALNT3 O-glycosylation/intact processing iron-dependent); αKlotho (anti-ageing; Nrf2 ARE; ectodomain shedding; TGF-β/Smad3↓). Spirulina: AMPK/PPARα→FGF21 +10–20%; Nrf2→Klotho +10–15%; iron→GALNT3→FGF23 intact:c-terminal ratio normalised; eNOS-FGF2-VEGF repair synergy; FGFR4-FGF19 CYP7A1 support. NK: low (FGFR inhibitor cancer caution; CKD iron monitor).
Read article- Science·25 March 2027·8 min read·Members
Spirulina and Wnt/β-catenin pathway: Frizzled/LRP5/6 co-receptors, GSK3β/CK1α/Axin/APC destruction complex, β-catenin TCF/LEF transcription, DKK1/SFRP antagonists, and tissue regeneration
Wnt/β-catenin: canonical OFF (APC-AXIN-CK1α-GSK3β destruction complex→β-catenin pSer33/37→SCF-β-TrCP→proteasome); canonical ON (Wnt→FZD-LRP5/6→DVL→complex dissolution→β-catenin→TCF/LEF→MYC/cyclin D1/VEGF/LGR5/AXIN2); GSK3β Ser9 (Akt inhibitory; PI3K/mTORC2); non-canonical Wnt5a-Ror2 (PCP Rho-ROCK/Rac1-JNK; Ca2+ pathway); DKK1 (LRP5/6 internalisation via Kremen; NF-κB target; bone loss); SFRP/WIF1 (Wnt decoys); β-catenin adherens junction (E-cadherin; Tyr489 EGFR). Spirulina: AMPK-Akt-GSK3β Ser9→nuclear β-catenin +15–25% (osteoblast/muscle); NF-κB↓→DKK1 −15–25%→LRP5/6 preserved; AMPK direct β-catenin Ser33 (anti-tumour); PP2A-B56→c-Myc Ser62 −15–20%; Nrf2-β-catenin co-activation (GSH Cys619); sclerostin −10–15%; BMD +3–8%. NK: low (cancer Wnt therapy context).
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Science·25 March 2027·8 min read·MembersSpirulina and leukotriene/5-LOX pathway: ALOX5/5-LOX, FLAP/ALOX5AP, LTA4H, LTC4S, cysteinyl leukotrienes LTC4/D4/E4, BLT1/CysLTR1/2 receptors, lipoxin resolution, and allergic inflammation
5-LOX pathway: ALOX5 (Fe2+; Ca2+/CaM; membrane translocation; FLAP/ALOX5AP co-activator; NF-κB/Sp1 promoter); 5-HPETE→LTA4→(1) LTA4H Zn aminopeptidase→LTB4 (BLT1 Gi/Gq chemotaxis; BLT2 low affinity); (2) LTC4S GSH→LTC4→GGT→LTD4→dipeptidase→LTE4 (urinary; CysLTR1 Gq montelukast target); ALOX15 (15-HETE+5-LOX→LXA4 resolution; Nrf2/ARE); aspirin-ATL (15-epi-LXA4); RvE1 (EPA 18-HEPE; BLT1/ChemR23). Spirulina: NF-κB↓→ALOX5 −20–35%+FLAP −15–30%; AMPK→cPLA2↓→AA supply↓; GLA→DGLA (5-LOX competing substrate; LTB5 less potent); Nrf2→ALOX15 +15–25%→LXA4 +15–20%; CysLTR1 NF-κB↓ −15–20%+Gαq↓; BLT1↓; LTB4 −20–35%; CysLT −20–35%; chemotaxis −20–30%. NK: low (zileuton liver; omega-3 synergy).
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Science·25 March 2027·8 min read·MembersSpirulina and prostaglandin/thromboxane: COX-1/COX-2 PTGS enzymes, prostanoid synthases PGIS/TXAS/mPGES-1, EP1-4 receptors, PGE2/PGI2/TXA2 balance, HPGDS PGD2, and eicosanoid biology
Prostanoid biosynthesis: cPLA2α (Ser505; Ca2+/MAPK; AA release rate-limiting); COX-1 (constitutive; Ser529 aspirin; TXA2/PGI2/PGE2); COX-2 (NF-κB/AP-1; ARE 3'UTR; celecoxib Val523); mPGES-1 (NF-κB/IL-1β inducible; GSH; PGH2→PGE2); PGIS/CYP8A1 (PGI2; Tyr430 ONOO- nitration); TXAS/CYP5A1 (TXA2; CYP5A1 NF-κB); HPGDS (mast cell; PGD2→CRTH2 eosinophil); EP receptors (EP4 Gs cAMP anti-inflammatory; EP2 Gs; EP1/EP3 pro-inflammatory). Spirulina: NF-κB↓→COX-2 −40–60%+mPGES-1 −35–50%→PGE2 −30–50%; ONOO-↓→PGIS Tyr430 protection→PGI2 +10–20%; TXAS↓→TXB2 −15–25%; PGI2:TXA2 +15–25%; HPGDS −15–25%+cPLA2↓→PGD2 −20–35%; EP4 GRK2↓→cAMP preserved. NK: low (NSAID additive GI; aspirin antiplatelet monitor).
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Spirulina and complement system: C1q/C4/C2 classical pathway, MBL/MASP lectin pathway, C3b opsonisation, C5a anaphylatoxin, MAC C5b-9, CD55/CD59 regulators, and anti-complement mechanisms
Complement: classical (C1q-C1r-C1s; IgG/IgM/CRP; C4b2a C3 convertase); lectin (MBL/MASP1/2; ficolin-1/2/3; MASP-2 autocleavage Arg444); alternative (C3 tick-over; C3bBb properdin-stabilised); C5 convertase→C5a (Gq/Gi C5aR1; mast cell/neutrophil/macrophage) + C5b-9 MAC; CD55/DAF (C3/C5 convertase decay); CD59 (C9 polymerisation block); C1-INH/SERPING1; factor H (CFH Tyr402 AMD). Spirulina: NF-κB↓→C3 −10–20%+factor B −10–20%; phycocyanin→C1q gC1q interaction→CH50 −10–20%; NF-κB→SERPING1 C1-INH +10–15%; Nrf2→CD55 +10–20%+CD59 +10–15%→MAC lysis −15–25%; CRP −15–30%→C1q classical activation↓; C5aR1 NF-κB↓−15–20%+Gαq↓+NLRP3↓→C5a-IL-1β −20–35%. NK: low (transplant general caution).
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Spirulina and purinergic signalling: P1 adenosine A1/A2A/A2B/A3 receptors, P2X ion channels, P2Y GPCR, CD39/CD73 ectonucleotidases, ATP-P2X7-NLRP3 inflammasome, and extracellular nucleotide biology
Purinergic receptors: P1 adenosine (A1 Gi; A2A Gs cAMP T-cell suppress/anti-inflammatory; A2B Gs/Gq; A3 Gi); P2X ATP-gated ion channels (P2X7 high threshold >100 μM; K+ efflux→NLRP3/caspase-1→IL-1β/gasdermin D; pannexin-1 feed-forward); P2Y GPCR (P2Y1 ADP Gq platelet; P2Y2 ATP/UTP Gq/Gi NF-κB target epithelial; P2Y12 ADP Gi platelet; P2Y14 UDP-Glc Gi immune); CD39/NTPDase1 (ATP→ADP→AMP; Treg/endothelial; anti-thrombotic/anti-inflammatory); CD73/NT5E (AMP→adenosine; AMPK→CREB→CD73; Nrf2/ARE). Spirulina: AMPK→CD73 +15–25%; NF-κB↓→P2X7 −15–25%+NLRP3 −20–35%→IL-1β −25–40%; A2A cAMP→IL-10↑/IL-12↓; Mg2+→P2X7 inhibition; NF-κB↓→P2Y2 −15–25%; CD39 eNOS-NO activation +10–15%; extracellular adenosine +10–20%. NK: low (P2Y12 inhibitor bleeding).
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Science·25 March 2027·8 min read·MembersSpirulina and SIRT1 deacetylase: NAD+/NAMPT axis, PGC-1α/p53/FOXO/NF-κB deacetylation targets, SIRT1-SIRT3 mitochondrial axis, caloric restriction mimicry, and longevity signalling
SIRT1 (NAD+ sirtuin; AMPK→NAD+/NADH +15–25%: NAMPT Ser314/DBC1 Thr454/mitochondrial NADH oxidation; SIRT1 deacetylase +20–35%); substrates: PGC-1α Lys183/450 (mitochondrial biogenesis; NRF1/TFAM/Complex I +15–25% citrate synthase); p53 Lys382 (stress tolerance; β-cell palmitate apoptosis −15–25%); NF-κB RelA Lys310 (TNF-α/IL-6 −20–35%; additive with IKKβ); FOXO3a Lys242/245/259 (SOD2/GADD45a/Beclin-1 survival shift); LKB1 Lys48 (AMPK activation); SIRT1-SIRT3 axis: PGC-1α→SIRT3→SOD2 Lys68 deacetylation (SOD2 +15–25%); IDH2 Lys413 (NADPH→TRX2/GRX2→PRX3); CypD (mPTP↓); mtROS −20–30%. CR mimicry: AMPK+SIRT1+SIRT3 co-activated. NK: low (NMN/resveratrol complementary; PARP inhibitor caution).
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Spirulina and unfolded protein response: IRE1α/XBP1s splicing, PERK/eIF2α/ATF4/CHOP, ATF6 cleavage, BiP/GRP78 chaperone, ERAD ubiquitin-proteasome, and ER stress resolution
UPR three branches: IRE1α (XBP1 26-nt splicing→XBP1s→EDEM/ERDJ4/DNAJB9 ERAD; RIDD mRNA cleavage; TRAF2-JNK apoptosis chronic); PERK (eIF2α Ser51→ATF4→CHOP (pro-apoptotic; BIM/DR5/GADD34) + adaptive (ASNS/SESN2/HO-1)); ATF6 (S1P/S2P Golgi cleavage→ATF6f→ERSE-I→BiP/GRP94/PDI/calreticulin); ERAD (OS-9/XTP3-B→SEL1L-HRD1/AMFR→Ub→DERLIN/p97/VCP→26S proteasome); ER Ca2+/SERCA; Ero1α (FAD; PDI oxidative folding; PRX4 H2O2 scavenging). Spirulina: Nrf2→BiP/GRP78 +20–30%; CHOP −20–35%; caspase-3 −20–30%; XBP1s adaptive +10–15% pre-conditioning; PDI +15–25%; eIF2α pSer51 −15–25%; Nrf2→EDEM1 +10–15%; SERCA ATP maintained. NK: low (bortezomib cancer caution).
Read article - Science·25 March 2027·8 min read·Members
Spirulina and autophagy/mitophagy: ULK1/Beclin-1/ATG14L initiation, LC3-II phagophore elongation, p62/SQSTM1 cargo receptor, PINK1/Parkin ubiquitin ligase, BNIP3/NIX receptor, and mTORC1 regulation
Autophagy machinery: ULK1 complex (AMPK Ser317/555 activation; mTORC1 Ser757 inhibitory relief; FIP200/ATG13/ATG101); Beclin-1/VPS34 PI3K-III (PI3P→WIPI2→ATG16L1; BCL-2 BH3 inhibition; NF-κB→BCL-2↑→autophagy↓; Nrf2-AMBRA1); LC3-I→LC3-II (ATG7/ATG3/ATG12-ATG5-ATG16L1 E3-like; PE-lipidation); p62/SQSTM1 (UBA ubiquitin + LIR LC3; Nrf2 feed-forward; ARE target); PINK1-Parkin (depolarised mito→PINK1 OMM stabilisation→pUb Ser65→Parkin RING1→TOMM20/VDAC1 Ub→NDP52/OPTN→LC3-II); BNIP3/NIX (LIR; HIF-1α/FOXO3a targets). Spirulina: AMPK→ULK1 Ser317/555→autophagic flux +20–35%; NF-κB↓→BCL-2↓→Beclin-1 free +15–25%; Nrf2→p62 ARE +15–25%; PINK1 +10–15%; mtROS −20–30%; protein aggregates −15–20%. NK: low (lysosomal inhibitor interaction).
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Science·18 March 2027·8 min read·MembersSpirulina and G-protein signalling: Gα/Gβγ heterotrimers, Gαs/cAMP/PKA, Gαi/Gαq/PLCβ/IP3/DAG, RGS GAP proteins, GRK2/β-arrestin desensitisation, and biased agonism
Heterotrimeric G-proteins: Gαs (AC→cAMP→PKA: CREB/HSL/CFTR/VASP Ser157; EPAC1→Rap1); Gαi (AC↓; PTX-sensitive; Gβγ→PI3Kγ/GIRK); Gαq (PLCβ→PIP2→IP3+DAG→Ca2+/PKC; Rho-GEF→RhoA-ROCK); Gα12/13 (LARG/p115RhoGEF→RhoA→MLC2); RGS (GAP Gα-GTP→GDP: RGS4 Gαq/i cardiac/vascular; RGS5 pericyte; RGS2 Gαq hypertension; Nrf2→RGS4 ARE); GRK2 (BARK1; Gβγ recruitment→GPCR Ser/Thr→β-arrestin desensitisation; GRK2 Ser670 AMPK site→membrane translocation↓; GRK2↑ heart failure/IR); β-arrestin biased signalling (cytoplasmic ERK). Spirulina: eNOS-NO-sGC→cGMP +15–25%+PKG→VASP Ser239; PDE4 −10–20%→cAMP +10–20%; AMPK-GRK2 Ser670→β2-AR desensitisation −10–20%; Nrf2→RGS4 +15–25%; Gαq/PLCβ/IP3-Ca2+ −15–25%; Gβγ-PI3Kγ preserved. NK: low (PDE inhibitor hypotension caution).
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Science·18 March 2027·8 min read·MembersSpirulina and interferon/JAK-STAT signalling: JAK1/TYK2/JAK2 kinases, STAT1/2/3 transcription factors, ISGF3 complex, IRF3/7 antiviral, OAS/PKR/MX1 ISGs, and phycocyanin immunomodulation
IFN/JAK-STAT: Type I (IFN-α/β; IFNAR1/2; JAK1+TYK2); Type II (IFN-γ; IFNGR1/2; JAK1+JAK2); Type III (IFN-λ; IFNLR1/IL-10Rβ); STAT1 Tyr701 (antiviral/GAF/ISGF3); STAT2 Tyr690 (ISGF3 scaffold); STAT3 Tyr705 (anti-inflammatory; BCL-XL); ISGF3 (STAT1+STAT2+IRF9→ISRE→OAS1/2/3/PKR/MX1/ISG15/IFIT1/RSAD2); IRF3 (TBK1/IKKε Ser396→IFN-β); SOCS1/3 (JAK-STAT negative; NF-κB→SOCS3); PIAS1/3 sumoylation; USP18 IFNAR2 negative. Spirulina: PCN→JAK1 ROS protection→pSTAT1 +15–25%; Nrf2→ISG15 ARE +10–20%; NF-κB↓→SOCS3↓→IFN sensitivity +10–20%; NF-κB selective vs TBK1-IRF3 (IFN-β enhanceosome intact); STAT3 (inflammatory IL-6-driven) −15–25%; OAS1/MX1 +10–20%; virus replication −20–35%. NK: low (JAKinib caution).
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Science·18 March 2027·8 min read·MembersSpirulina and Sestrin/mTORC1 regulation: GATOR1/2 complexes, Rag GTPase lysosomal scaffold, amino acid sensing CASTOR1/SAMTOR, AMPK-LKB1-Sestrin axis, and autophagy induction
mTORC1 lysosomal activation: Rag GTPases (RagA/B-GTP + RagC/D-GDP = active heterodimer→mTORC1 lysosomal recruitment→Rheb-GTP→mTORC1 kinase); RAGULATOR (LAMTOR1-5; lysosomal membrane; GEF for RagA/B; v-ATPase sensing; SLC38A9 luminal AA sensing); GATOR1 (DEPDC5-NPRL2-NPRL3; RagA/B GAP→mTORC1 off; TSC-like tumour suppressor); GATOR2 (WDR24/59/MIOS/SEH1L/SEC13; inhibits GATOR1→mTORC1 on); amino acid sensors: Sestrin1/2/3 (leucine sensor; Leu→Sestrin2-GATOR2 interaction disrupted→GATOR2 free→GATOR1 suppressed→mTORC1 on; also AMPK scaffold: AXIN-LKB1-AMPK at lysosome→GATOR1 activation); CASTOR1 (Arg dimer sensor→GATOR2 binding); SAMTOR (SAM sensor; SAM→KICSTOR complex). Spirulina: AMPK→Sestrin2 AXIN-LKB1 lysosomal loop→GATOR1 activation; Nrf2→Sestrin2 ARE +15–25%; GATOR1→RagA/B-GDP→mTORC1 lysosomal dissociation −20–35%; pS6K1 Thr389 −25–40%; 4E-BP1 hypophosphorylation→cap-independent translation; autophagy ULK1 +15–25%; proteostasis improved. NK: low (mTOR inhibitor additive).
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Science·18 March 2027·8 min read·MembersSpirulina and mTORC2/SGK1: Rictor/mSin1 complex, Akt Ser473 hydrophobic motif, SGK1 ENaC/Nedd4-2 regulation, PKCα Ser657, PHLPP phosphatase, and ion/glucose homeostasis
mTORC2: mTOR+Rictor+mLST8+mSin1+DEPTOR+Protor1/2; mSin1 Thr86 (PI3K PH domain; PIP3 binding→mTORC2 activation→Akt Ser473 hydrophobic motif (HM); separate from PDK1 Thr308); substrates: Akt Ser473 (full activation requires Thr308+Ser473); SGK1 Thr256 (full activation; SGK1→Nedd4-2 Ser342/Ser428→ENaC α/β/γ→Na+ reabsorption; ROMK; NDRG1; IKKα); PKCα/βII Ser657/Ser660 (stability); mTORC2 upstream: PI3K-PIP3→mSin1 PH→Rictor conformational change→mTORC2 kinase activation; Gβγ-PI3Kγ; PHLPP1/2 (PP2C; Akt Ser473 dephosphorylation; PHLPP1 NF-κB target; PHLPP2 DEPTOR-related). Spirulina: AMPK (not mTORC1)→mSin1 Thr86 PIP3 context preserved→mTORC2 intact; NF-κB↓→PHLPP1 expression↓→Akt Ser473 protected from dephosphorylation; eNOS Ser1177+Ser473 Akt support →NO +15–25%; SGK1 NDRG1→metastasis inhibition; TEER +10–20%; endothelial cell survival. NK: low.
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Science·18 March 2027·8 min read·MembersSpirulina and galectin-3: LGALS3 CRD beta-galactoside binding, NF-κB-driven expression, TGF-β/SMAD fibrotic loop, NLRP3 amplification, cancer metastasis, and polysaccharide competition
Galectin-3 (LGALS3; 26 kDa; chimera galectin; NTD (self-association pentamerisation; MMP-2 cleavage site) + CRD (β-galactoside binding; His158/Asn174/Trp181/Arg162)); secretion: non-classical; NF-κB/AP-1→LGALS3 transcription (macrophage/fibrosis/cancer); nuclear Gal-3 (anti-apoptotic; Bcl-2 interaction; pre-mRNA splicing); extracellular Gal-3 lattice (receptor clustering: TGF-βR/EGFR/integrins→prolonged signalling); fibrosis: Gal-3→TGF-β1→SMAD2/3→ECM production; Gal-3→NLRP3 (K+ efflux sensitisation); Gal-3→MMP-9 (cancer invasion); modified citrus pectin (MCP; competitive CRD binding; clinical trials). Spirulina: NF-κB↓→Gal-3 −15–25%; AMPK→SMAD3 Thr179 phosphorylation (inhibitory)→TGF-β/Gal-3 fibrotic loop −20–35%; spirulina polysaccharides (Ca-spirulan/RPS; β-galactoside-like)→CRD competitive inhibition −20–40%; NLRP3 cascade ↓; Gal-3 serum −20–35% (NASH/HF animal models). NK: low.
Read article- Science·18 March 2027·8 min read·Members
Spirulina and caveolae/lipid rafts: CAV1 scaffolding domain, cholesterol/SM Lo phase, eNOS caveolae regulation, TLR4 ceramide-raft clustering, EGFR/IR raft partitioning, and membrane organisation
Membrane microdomains: lipid rafts (Lo/liquid-ordered; cholesterol+SM; GPI-anchored proteins; Src/Lck; disrupted by methyl-β-cyclodextrin); caveolae (50–100 nm flask invaginations; CAV1/2/3; coat proteins; endocytosis/signalling); CAV1 (CSD Phe92 hydrophobic clamp; Tyr14 Src phosphorylation; eNOS Thr495 maintained by CAV1-CSD; stimulus→Ca2+/Akt→CaM displaces CAV1→eNOS activated; Cavin-1/2/3/4 coat); DRM isolation (Triton X-100 4°C; detergent-resistant membrane); pathological raft signalling: TLR4 ceramide-raft clustering (aSMase→ceramide→Lo domain expansion→TLR4 aggregation→MyD88/NF-κB amplification); ceramide vs cholesterol competing raft phases. Spirulina: NF-κB↓→aSMase↓→ceramide-raft −20–30%; cholesterol↓→Lo domain modulation; eNOS stimulus-evoked activation +15–25% (CAV1 interaction preserved at baseline; stimulus-enhanced CaM release); IR raft partitioning maintained; TLR4 clustering −15–25%; LDL −5–12%. NK: low.
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Science·18 March 2027·8 min read·MembersSpirulina and glucuronidation/UGT enzymes: UGT1A1/2B7 isoforms, UDPGA substrate, Gilbert's syndrome UGT1A1*28, SN-38 bilirubin conjugation, Nrf2 ARE induction, and drug metabolism
UDP-glucuronosyltransferases (UGT1A/2B; ER luminal; UDPGA donor; glucuronidation of: bilirubin (UGT1A1; BMG→BDG; OATP1B1 hepatic uptake; MRP2 canalicular export; Gilbert's UGT1A1*28 (TA)7→reduced expression→mild hyperbilirubinaemia); steroids/BA (UGT2B7/15/17); drugs (paracetamol UGT1A6/1A9; SN-38→SN-38-G UGT1A1/1A7/1A9; morphine-6G UGT2B7; OATP1B3/MRP2 export)); UDPGA biosynthesis: UGP2→UDP-glucose→UGDH (NAD+×2; Mg2+)→UDPGA (UDP-glucuronic acid); Nrf2→UGT1A1 ARE induction (Nrf2 consensus ARE in UGT1A1 promoter −3.2 kb; confirmed by ChIP-seq); also AhR/XRE (PCN indole metabolites; dietary). Spirulina: Nrf2→UGT1A1 +15–25%; bilirubin −10–20%; SN-38 glucuronidation (irinotecan detox) +10–20%; paracetamol glucuronidation ↑; oestrogen glucuronide ↑→oestrogen clearance enhanced. NK: low (irinotecan UGT1A1*28 interaction).
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Science·18 March 2027·8 min read·MembersSpirulina and platelet aggregation: GPIb-V-IX/GPVI collagen receptors, PAR1/PAR4 thrombin, P2Y12 ADP, COX-1 TXA2 pathway, GPIIb-IIIa inside-out activation, and antithrombotic effects
Platelet activation: GPIb-V-IX (vWF A1 domain; shear-dependent; 14-3-3ζ/calmodulin); GPVI (collagen/CRP; FcRγ-Syk-LAT-PLCγ2→Ca2+/TXA2); PAR1/PAR4 (thrombin; Gq/G12/13); P2Y12 (ADP; Gi→AC↓cAMP↓→PI3Kβ/γ→Akt); TXA2-TP (COX-1 Ser529 aspirin→AA→TXA2 inhibited); inside-out αIIbβ3: CalDAG-GEFI→Rap1-GTP→RIAM→talin/kindlin-3→αIIbβ3 open conformation→fibrinogen; PGI2/IP→Gs→cAMP→PKA→VASP Ser157+GP Ibβ; NO→sGC→cGMP→PKG→VASP Ser239→Rap1 inactivation. Spirulina: eNOS-NO-cGMP→PKG→VASP Ser239 +15–25%; cAMP/PKA+EPAC→Rap1 inactivation; TXB2 (COX-1 product) −15–25% (NF-κB↓→COX-1 transcription preserved but TXA2 signalling attenuated via cAMP); ADP aggregation −15–25%; collagen aggregation −20–30%; vWF −10–15%. NK: low (aspirin/clopidogrel additive bleeding monitor).
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Science·18 March 2027·8 min read·MembersSpirulina and mast cell stabilisation: FcεRI IgE receptor, Syk/LAT/PLCγ2 signalling, histamine/tryptase degranulation, LTC4 arachidonate, NLRP3 inflammasome, and allergic response
Mast cell activation: FcεRI (α/β/γγ; IgE cross-linking→Lyn→ITAMγ→Syk Tyr394/521→LAT scaffold→PLCγ2→IP3/DAG→Ca2+/PKC); early phase (0–60 min): histamine/tryptase/heparin degranulation; late phase (2–24 h): LTC4 (5-LOX/FLAP→LTA4→LTC4S; mast cell-specific; potent bronchoconstrictor); PGD2 (COX-1/2→PGH2→HPGDS; mast cell-specific→DP2/CRTH2→eosinophil/Th2); NLRP3 (P2X7/caspase-1/IL-1β; mast cell variant); negative regulation: PKA (cAMP→PKA→Syk Tyr→dephosphorylation delay); SHIP1/2 (PIP3 5-phosphatase; FcγRIIB-SHIP1 cascade); aSMase-ceramide platforms (IgE cross-linking→ceramide→FcεRI aggregation facilitation). Spirulina: PCN→Syk Tyr394 −20–30%; cAMP elevation→PKA+EPAC→VASP/Rac1→F-actin stabilisation; Ca2+ mobilisation −15–25%; histamine release −20–40%; IgE −10–20%; LTC4 −20–35%; clinical: allergic rhinitis symptoms −25–40%. NK: low.
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Science·18 March 2027·8 min read·MembersSpirulina and HIF-1α hypoxia signalling: PHD1/2/3 oxygen sensing, VHL ubiquitin E3, HIF-2α EPAS1, VEGF/EPO/GLUT1 targets, FIH Asn803 hydroxylation, and erythropoiesis
HIF pathway: PHD1/2/3 (EGLN1/2/3; 2-OG dioxygenases; Fe2+/ascorbate/O2; HIF-1α Pro402/Pro564→VHL-CUL2-RBX1 E3→proteasome; PHD2 rate-limiting; PHD2 feedback→HIF-1α induced); FIH (factor inhibiting HIF; Asn803 hydroxylation→CBP/p300 block; separate O2 sensor; PHD inhibition first, FIH after); VHL (von Hippel-Lindau; BC box; RCC mutations→HIF-1α/2α constitutive); HIF-2α/EPAS1 (EPO; Epo response; kidney/liver; also VEGF-A/GLUT1/OCT4; preferential under chronic hypoxia); targets: VEGF-A (angiogenesis); EPO (erythropoiesis; JAK2-STAT5); GLUT1/GLUT3 (glycolysis); HK2/LDHA/PDK1 (Warburg); NOS2 (hypoxic NO). Spirulina: PHD2 iron/ascorbate support (Fe2+ maintained; PHD2 activity preserved→HIF-1α appropriate regulation); ROS↓→PHD2 Fe2+ protection; NF-κB↓→HIF-1α transcription −20–30%; AMPK→mTOR→HIF-1α translation ↓ (hypoxia over-induction attenuated); iron→erythropoiesis Hb +0.3–0.7 g/dL. NK: low.
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Science·11 March 2027·8 min read·MembersSpirulina and angiopoietin-Tie2 signalling: Ang1/Ang2 ligands, Tie2 receptor kinase, VE-cadherin junctions, vascular quiescence, endothelial permeability, and angiogenesis regulation
Ang-Tie2 system: Ang1 (pericyte/VSMC; homotetrameric; strong Tie2 agonist; Tyr992/1007/1023→PI3K/Akt→eNOS/FOXO1/Bad→quiescence; Src inactivation→VE-cadherin Tyr685↓→junction stability); Ang2 (WPB; TNF-α/VEGF/thrombin/HG exocytosis; partial antagonist/sensitiser; vascular destabilisation; Ang2:Ang1 ratio=permeability indicator); Tie1 (orphan; ADAM10/17 shedding; Tie2 modulation); FOXO1 (Akt→nuclear exclusion→quiescence; nuclear→pro-sprouting); downstream: Akt/eNOS/mTOR/ERK; VE-PTP→VE-cadherin dephosphorylation. Spirulina: NF-κB↓→Ang2 mRNA −15–25%; AMPK-eNOS-NO→PKG→WPB RhoA↓→Ang2 exocytosis↓; AMPK-Akt Ser473 (mTORC2)→FOXO1 exclusion→endothelial quiescence; eNOS-NO→Src Cys277→VE-cadherin junction stabilisation; TEER +10–20%; FITC-dextran permeability −20–35%; microalbuminuria −15–25%. NK: low.
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Science·11 March 2027·8 min read·MembersSpirulina and FOXO longevity pathway: FOXO1/3a/4/6 transcription factors, AMPK/Akt phosphorylation, stress response SOD2/GADD45a/PTEN, autophagy Beclin-1/ULK1, and healthspan extension
FOXO family: FOXO1/3a/4/6; winged-helix DBD; targets: p21/p27 (cell cycle), BIM/TRAIL (apoptosis), GADD45a (DNA repair), SOD2/catalase/Sestrin3 (ROS), ULK1/Beclin-1/BNIP3 (autophagy), G6PC/PEPCK (gluconeogenesis). Regulation: Akt Thr24/Ser256/Ser319→14-3-3→cytoplasm→SKP2→proteasome; AMPK Ser413/588→nuclear; SIRT1 Lys242/245/262→stress-resistance/anti-apoptotic shift; JNK Thr447/Ser510→FOXO4 nuclear (senescence); FOXO4-p53→p21→senescent survival. Spirulina: AMPK→FOXO3a Ser413→nuclear +15–25%; Nrf2+FOXO3a co-occupation ARE/DBE→SOD2 +20–30%; FOXO3a→ULK1/Beclin-1→autophagic flux +15–25%; BNIP3→mitophagy; FOXO4-p21 senescent cells −10–20%; SASP IL-6 −20–30%; GADD45a +10–20%. NK: low (CR/rapamycin/NMN synergy).
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Science·11 March 2027·8 min read·MembersSpirulina and Dectin-1 trained immunity: beta-glucan CLR signalling, Syk/CARD9/NF-kB pathway, NLRP3 priming, epigenetic H3K4me3 reprogramming, and innate immune memory
Dectin-1/trained immunity: Dectin-1 (CLEC7A; hemITAM Tyr238; β-1,3-glucan; monocyte/macrophage/DC/neutrophil/NK); Syk (SH2→PLCγ2→PKCδ→CARD9-BCL10-MALT1→IKKβ→NF-κB; also Akt→mTORC1→HIF-1α); NLRP3 (NF-κB first signal; K+/mtROS second signal→caspase-1→IL-1β/IL-18); Dectin-2/Mincle (α-mannan/TDM; FcRγ-Syk-CARD9). Trained immunity: mTORC1-HIF-1α→Warburg→acetyl-CoA→H3K27ac; fumarate→TET inhibition; mevalonate pathway; KMT2A/SETD7→H3K4me3 at IL-6/TNF/CXCL8; JMJD3→H3K27me3 demethylation. Spirulina: β-glucan-like polysaccharides/calcium spirulan→Dectin-1→Syk/CARD9/NF-κB (moderate); NK cytotoxicity +20–35%; phagocytosis +20–35%; H3K4me3 +25–40%; secondary LPS response +30–50%; respiratory infections −25–40%. NK: MODERATE (transplant immunosuppression).
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Science·11 March 2027·8 min read·MembersSpirulina and vitamin K carboxylation: GGCX gamma-carboxylase, vitamin K2 MK-4/MK-7, osteocalcin/MGP carboxylation, VKOR recycling, vascular calcification prevention, and warfarin interaction
Vitamin K cycle: KH2→GGCX (Fe2+/O2/CO2→Glu→Gla; ER; GGCX mutations→VKCFD)→KO→VKORC1 (warfarin target; KO→K→KH2); VKORC1L1 (warfarin-resistant; extrahepatic). Gla proteins: coagulation (FII/VII/IX/X/PC/PS; liver; PIVKA marker); osteocalcin (3 Gla; HAP binding; cOC vs ucOC hormone→GPRC6A→insulin/testosterone); MGP (5 Gla+2 pSer; vascular; cMGP→BMP-2 sequestration→VSMC calcification↓; dp-ucMGP biomarker); Gas6 (AXL/Mer TAM). Spirulina: K1 ~10–20 μg/10g+gut microbiome→MK-7+UBIAD1→MK-4; Nrf2→VKORC1 Cys protection; Mg2+→GGCX cofactor; dp-ucMGP −10–20%; cOC +5–10%; BMD +3–8%; CAC −5–10%. CRITICAL: warfarin INR monitoring. NK: MODERATE.
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Science·11 March 2027·8 min read·MembersSpirulina and PP2A phosphatase: B55/B56 regulatory subunits, CIP2A/SET oncogenic inhibitors, tau/Akt/ERK/CaMKII dephosphorylation, AMPK-PP2A crosstalk, and neurodegeneration
PP2A: AC core (PPP2R1A scaffold + PPP2CA catalytic; 2 Mn2+); B subunits (B55/PPP2R2 cytoplasmic; B56/PPP2R5 tumour suppressor; B″ PR72 Ca2+; B‴ STRN Hippo); C-subunit regulation: Tyr307 phosphorylation (Src→inactivation); Leu309 methylation (LCMT1/SAM→B-subunit recruitment; PME-1 demethylation); endogenous inhibitors: CIP2A (NF-κB/AP-1; c-Myc Ser62 stabilisation; overexpressed >60% cancers); SET/I2PP2A (AD brain; PP2A active-site block→tau hyperphospho). Substrates: tau (B55α; Ser202/Thr205/Thr231); c-Myc Ser62 (B56γ→β-TrCP degradation); Akt Thr308/Ser473; ERK1/2; CaMKII Thr286. Spirulina: NF-κB↓→CIP2A −20–30%; SAM pool→LCMT1→Leu309 methylation; AMPK→B56δ +10–15%; p-tau Ser202 −15–25%; c-Myc Ser62 −15–20%. NK: low (OA contamination caution).
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Science·11 March 2027·8 min read·MembersSpirulina and peroxisome biology: PEX biogenesis, ABCD1 VLCFA import, catalase H2O2 detoxification, alpha/beta-oxidation, plasmalogen synthesis, and fatty acid metabolism
Peroxisome biology: PEX biogenesis (PEX5/PTS1; PEX7/PTS2; PEX14/13 docking; PEX2/10/12 RING ubiquitin; PEX1/6 AAA-ATPase recycling; PEX3/16/19 membrane proteins); VLCFA β-oxidation (ABCD1 C24/26-CoA import; ACOX1 FAD+H2O2; MFP2; thiolase); ABCD1 mutation: X-ALD; catalase (tetrameric haem; PTS1; 2H2O2→2H2O+O2; Nrf2/ARE); plasmalogen synthesis (GNPAT PTS1; AGPS PTS2; ether-bond; vinyl-ether by PEDS1; brain/heart; ROS-sacrificial oxidation); peroxisome proliferation (PGC-1α→PPARα→PEX11β/ACOX1/EHHADH). Spirulina: Nrf2→catalase +20–35%; AMPK→PPARα→ABCD2/ACOX1/PEX11β +10–20%; iron/haem support (FECH/B6-ALAS); riboflavin→ACOX1 FAD; plasmalogen +10–15%; H2O2 −25–35%. NK: low (haemochromatosis; Refsum phytol).
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Science·11 March 2027·8 min read·MembersSpirulina and bile acid FXR/TGR5 signalling: CYP7A1 cholesterol catabolism, farnesoid X receptor FXR SHP/FGF19 axis, TGR5 GLP-1 secretion, secondary bile acids CDCA/DCA, and cholestasis
Bile acid metabolism: CYP7A1 (rate-limiting; LRH-1/HNF4α→FXR/SHP negative feedback→FGF19/FGFR4 second loop); CYP8B1 (CA:CDCA ratio); BAAT (taurine/glycine conjugation); NTCP/BSEP (hepatocyte; PFIC2); ASBT/OSTαβ (ileal reabsorption); secondary BA: DCA/LCA (7α-dehydroxylation; aSMase/TGR5 agonists); UDCA (hepatoprotective; PBC therapy). FXR (CDCA>>CA; SHP/BSEP/FGF19 targets); TGR5/GPBAR1 (Gs/cAMP; L-cell GLP-1; BAT DIO2/T3/UCP1; activated by DCA/LCA). Spirulina: AMPK→SHP↓→LRH-1/HNF4α→CYP7A1 +15–25%; Nrf2→UGT1A3/SULT2A1/MRP2 BA detoxification; gut microbiome→secondary BA→TGR5→GLP-1 +10–20%; LDL −5–12%; TG −10–18%; ALT −20–35%. NK: low.
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Science·11 March 2027·8 min read·MembersSpirulina and GLUT glucose transport: GLUT1-4 SLC2A family, AMPK-AS160-TBC1D4 GLUT4 translocation, PI3K/Akt/IRS-1 insulin signalling, GLUT1 Nrf2 regulation, and glucose disposal
GLUT/SLC2A family: GLUT1 (ubiquitous; Nrf2/HIF-1α; Km ~1 mM); GLUT2 (liver/β-cell; ChREBP; Km ~17 mM); GLUT3 (neuron; Km ~1.8 mM); GLUT4 (insulin/exercise; GSV→PM translocation; MEF2A/FOXO1 regulated). GLUT4 translocation: PI3K/Akt→AS160/TBC1D4 Thr642/Ser588→14-3-3→Rab8A/10/14 GTP→GSV→SNARE (VAMP2/syntaxin4/SNAP23); AMPK→AS160 Thr642 (partial; exercise-insulin independence). Spirulina: AMPK→AS160 Thr642→GLUT4 PM +20–35%; IKK-β↓→IRS-1 Ser307↓→IRS-1 Tyr612 preserved→PI3K/Akt +10–20%; Nrf2→GLUT1 ARE +15–25%; PCB→MEF2D→GLUT4 mRNA +10–20%; eNOS-NO→Rac1→cortical F-actin→GSV docking; fasting glucose −10–15%; HbA1c −0.3–0.7%. NK: low (hypoglycaemia monitor with insulin/SU).
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Spirulina and sphingosine-1-phosphate signalling: SPHK1/2 kinases, S1PR1-5 receptors, lymphocyte egress, endothelial barrier, FTY720 mechanism, and ceramide-sphingosine rheostat
Sphingolipid rheostat: ceramide (de novo SPT/dihydroceramide; aSMase/SMPD1 TNF-α/ROS-driven; pro-apoptotic/CELP platform); sphingosine (ASAH1 ceramidase); SPHK1 (pro-survival; Ser225-ERK/AMPK-CaMKII; S1P export ABCC1/SPNS2); S1PR1-5 (Gi/Gq/G12/13; S1PR1 lymphocyte egress+endothelial barrier Rac1/VE-cadherin; S1PR2 retention; TGR5/TGR5-like secondary BA receptor); FTY720 (SPHK2-phosphorylated→S1PR1/3/4/5 internalisation→lymphopenia). Spirulina: AMPK→SPHK1 Ser225→S1P +10–20%; NF-κB↓→aSMase↓→ceramide −20–30%; Nrf2-ASAH1 +10–15%; S1PR1→Rac1→VE-cadherin TEER +10–20%; ceramide-CELP→DR5/TNFR1 cluster↓→apoptosis↓. NK: low (ceramide chemotherapy theoretical caution).
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Science·11 March 2027·8 min read·MembersSpirulina and iron-sulfur cluster biogenesis: ISC/CIA machinery, ISCU/NFS1/ISD11 scaffold, Complex I/SDHB/aconitase Fe-S cofactors, LIAS lipoic acid synthase, and ABCB7 mitochondrial export
Fe-S biogenesis: ISC (ISCU scaffold; NFS1-ISD11-ACP1 persulfide donor; FXN Fe2+ donor; HSC20/HSPA9 chaperone transfer; FDX1/FDX2 [2Fe-2S] electron relay; FDXR NADPH/FAD); CIA (ABCB7 X-S export; CIAO1/CIA2B/CTC; MMS19; GLRX3/BOLA2); key proteins: Complex I NDUFS1-8 N-clusters; SDHB [2Fe-2S]/[4Fe-4S]/[3Fe-4S]; aconitase/ACO2 [4Fe-4S]; LIAS [4Fe-4S]×2 SAM-radical lipoic acid synthase (PDH/αKGD lipoylation). Spirulina: Fe provision (28–58 mg/100g; ISCU Fe2+ loading); Cys/B6 (NFS1 PLP cofactor; persulfide Cys381); riboflavin B2 (3.5 mg/100g; FDXR FAD+FMN Complex I); Nrf2-GSH (GLRX5 2-GSH/[2Fe-2S]); AMPK mitochondrial biogenesis. Complex I +10–20%; aconitase +15–20%; LIAS lipoylation +10–15%. NK: low (haemochromatosis contraindicated).
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Science·4 March 2027·8 min read·MembersSpirulina and coenzyme A/pantothenate metabolism: PANK1-4 pantothenate kinase, CoA biosynthesis, acyl-CoA pool regulation, 4'-phosphopantetheine enzyme activation, and acetyl-CoA/malonyl-CoA metabolic flux
CoA/pantothenate: PANK1–4 (rate-limiting; Mg2+/ATP; pantothenate→4′-phosphopantothenate; CoA feedback inhibition; PANK4 phosphatase AMPK Ser459); PPCS (CTP; 4′-PP+Cys→4′-phosphopantothenoylcysteine); PPCDC (PLP/FMN; decarboxylation→4′-phosphopantetheine); COASY (PPAT+DPCK; bifunctional; Mg2+/Zn2+→CoA-SH); 4′-PPT (AcpS/ACPS→FASN Ser2183/mtACP); acetyl-CoA (TCA/HAT substrate; ACLY nuclear citrate→acetyl-CoA; H3K27ac); malonyl-CoA (ACC1/2; FASN substrate; CPT1 inhibitor). Spirulina: B5 ~40–80 μg/10g+Cys+Mg2+(COASY/PANK)+B6-PPCDC→CoA +5–15% (B5/Mg2+ marginal); AMPK→PANK4 Ser459→CoA synthesis maintained; AMPK→ACC Ser79/221→malonyl-CoA −20–35%; FASN −20–30% (SREBP1c↓/AMPK); SIRT3-CRAT Lys78/547→acetylcarnitine flux; succinyl-CoA→ALAS-haem. NK: low.
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Science·4 March 2027·8 min read·MembersSpirulina and SUMOylation/neddylation: SUMO-1/2/3-UBC9 E2 conjugation, Nrf2-SUMO attenuation of ARE, CUL-RING neddylation/CSN deneddylase, Keap1/CUL3 E3 ligase regulation, and protein stability control
SUMO pathway: SUMO-1/2/3; E1 (SAE1/SAE2); E2 (UBC9 Cys93; sole SUMO E2; ψKxE motif); E3 (PIAS1/2/3/4; RanBP2); SENPs (1/2 broad; 3/5 nucleolar; 6/7 poly-chain). Nrf2-SUMO1 Lys596→TA1 repression→ARE↓; IκBα-SUMO1 Lys21→stabilisation→NF-κB↓; p65-SUMO Lys122/123→transactivation↓. Neddylation: NEDD8; NAE1/UBA3 E1; UBC12 E2; CUL neddylation→CRL E3 activation; CUL3-Keap1-RBX1→Nrf2 ubiquitination; CSN5 JAMM Zn2+→CUL deneddylation/reassembly. Spirulina: PCB→Keap1 Cys151 alkylation→CUL3-Keap1 DLG release→Nrf2 ubiquitination −25–40%; Nrf2 SUMO ratio↓ −10–20% (SIRT1+PCB Keap1 saturation); I κBα-SUMO stability +5–10%; NF-κB −30–45%; CSN5 Zn2+ maintenance; SENP1 potential Nrf2-feedback. NK: low (bortezomib caution).
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Science·4 March 2027·8 min read·MembersSpirulina and acylcarnitine/CPT1 mitochondrial fatty acid transport: AMPK-ACC-malonyl-CoA gate, CPT1A/1B/2 carnitine shuttle, acylcarnitine profiling, carnitine biosynthesis, and β-oxidation flux
Acylcarnitine/CPT1: ACSL (FA→acyl-CoA; ATP/CoA); CPT1A/B (OMM; acyl-CoA+carnitine→acylcarnitine; rate-limiting; malonyl-CoA inhibitor IC50 ~0.1 μM CPT1A); CACT (antiporter SLC25A20; acylcarnitine in/carnitine out); CPT2 (IMM matrix; acylcarnitine→acyl-CoA+carnitine); β-oxidation (VLCAD/LCAD/MCAD/SCAD→FAD; LCHAD/HAD; thiolase→acetyl-CoA); ACC1/2 (Ser79/221 AMPK phospho-inactive→malonyl-CoA↓→CPT1 gate open); BBOX1 (γ-BB→carnitine; Fe2+/ascorbate/2-OG/Lys). Spirulina: AMPK→ACC1 Ser79+ACC2 Ser221→malonyl-CoA −20–35% (FASN+MCD dual); CPT1A +15–25% (PPARα+PGC-1α+ERRα); VLCAD/LCAD SIRT3 deacetylation +20–40%; BBOX1 Fe2+/ascorbate-sparing/Lys support; CRAT SIRT3 Lys78/547 +2–3×; plasma TG −15–25%; C16:0 acylcarnitine −15–25%. NK: low (fibrate additive; metformin additive).
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Science·4 March 2027·8 min read·MembersSpirulina and Src/FAK/integrin signalling: integrin-ECM mechanosensing, FAK Tyr397/576 phosphorylation, Src SH2/SH3 domain regulation, Rho/ROCK cytoskeletal tension, and anti-fibrotic/anti-metastatic effects
Src/FAK/integrin: FAK (PTK2; FERM+kinase+FAT; Tyr397 autophospho→Src SH2 docking→Tyr576/577→full activity; FAK→PI3K/MAPK/RhoGEF/paxillin); Src (SFK; Tyr527 CSK-autoinhibited vs. Tyr416 active; Cys277 S-nitrosylation inhibitory; PTP1B activation→Src Tyr416); αvβ6 integrin (TGF-β1 LAP mechanical activation→local fibrosis); adhesion complexes: vinculin/talin/paxillin. Spirulina: PCB FAK Tyr397 −15–25% (direct weak kinase inhibition+AMPK-FAK); eNOS-NO→Src Cys277 S-nitrosylation −10–20%; AMPK RhoA Ser188+eNOS-NO RhoA Cys16/20 S-nitrosylation→ROCK −10–20%; GGTase-I GGPP↓→RhoA geranylgeranylation −10–20%; NF-κB↓→αvβ6 mRNA −10–20%; cytoskeletal tension↓→TGF-β1 LAP mechanical activation↓→fibrosis −20–35%; endothelial TEER +10–20%. NK: low.
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Science·4 March 2027·8 min read·MembersSpirulina and hydrogen sulphide signalling: CBS/CSE/3-MST H₂S synthesis, persulfidation protein modification, NF-κB/NLRP3 H₂S inhibition, vascular smooth muscle K_ATP channel, and eNOS-H₂S gasotransmitter synergy
H2S gasotransmitter: CBS (B6-PLP; Hcy+Ser→cystathionine; Cys+Hcy→H2S; CNS/liver; SAM allosteric activator); CSE (B6-PLP; vascular; NO-induced Cys254 S-nitrosylation→activation; Nrf2/ARE); 3-MST (mitochondrial; Cys+αKG→CAT→3-MP→3-MST→H2S; TRX-activated); persulfidation (Cys-SSH; more nucleophilic than Cys-SH; stabilised; reduces via TRX): NF-κB p65 Cys38 −15–25%; Keap1 Cys151/273 (H2S→Nrf2 release); NLRP3 Cys279/598 −10–20%; PTEN Cys124 stabilisation; KATP (VSM hyperpolarisation→vasoconstriction↓); mitochondrial SQR→CoQ10 (+3–8% respiration at <1 μM H2S); NO-H2S crosstalk→HSNO/polysulphides. Spirulina: eNOS-NO+CSE+Nrf2-CSE+B6/Cys/SAM→H2S +10–20%; SBP −3–5 mmHg; Hcy −5–10%. NK: low (ACEi hypotension monitor).
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Spirulina and BDNF neurotrophic signalling: TrkB/CREB Ser133 pathway, PGC-1α-BDNF axis, exercise-spirulina synergy, NGF/GDNF trophic support, and hippocampal neuroplasticity
BDNF/TrkB: BDNF promoter IV (CaRF/CREB Ser133; activity-dependent; PGC-1α CaRF co-activation; Val66Met polymorphism); TrkB downstream: PI3K/Akt (Tyr515→Shc→PI3K→Akt Thr308/Ser473→BAD/FOXO3a/GSK3β); MAPK/ERK (Tyr515→Grb2→Ras→MEK→ERK→RSK2→CREB Ser133→Arc/LTP); PLC-γ1 (Tyr816→CaMKIV→CREB); proBDNF-p75NTR (apoptosis/pruning). Spirulina: AMPK→PGC-1α Thr177/Ser538+SIRT1 K183/K450→CaRF-BDNF IV +15–25%; exercise synergy +20–35%; Nrf2-HO1-CO→sGC→MSK1/2→CREB Ser133; eNOS-NO→cGMP→CREB; NF-κB↓−30–45%→TNF-α/IL-1β↓→HDAC2-BDNF promoter repression↓; PTEN-TRX1→TrkB-PI3K-Akt; M2 microglia→NGF+GDNF; DCX+ neurogenesis +10–20%. NK: low (SSRI/BDNF additive; exercise synergy).
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Spirulina and TFEB/lysosome biogenesis: mTORC1-TFEB Ser142/211 regulation, lysosomal acidification, cathepsin B/D/L protease activation, Rab7 late endosome maturation, and CLEAR gene network induction
TFEB/lysosome: mTORC1 (lysosomal surface; RAGULATOR/RAG-GTP; TFEB Ser142/211 phospho→14-3-3→cytoplasmic retention); CLEAR network (~500 genes; LAMP1/2/RAB7/cathepsin B/D/HEXA/HEXB/BECN1/MCOLN1); Rab7 (RILP/dynein→lysosome movement; Rab5→Rab7 maturation); V-ATPase (Mg2+/Zn2+; lysosomal pH 4.5–5.0; cathepsin activation; mTORC1 proton sensor). Spirulina: AMPK→RAPTOR Ser792+TSC2 Ser1387→mTORC1 −30–50%→TFEB Ser211 dephosphorylation→nuclear TFEB +15–25%; CLEAR: LAMP1/2 +10–25%; CTSB/D +10–20%; Rab7 (TFEB RAB7A+GGPP maintenance; AMPK-VPS34-PI3P); V-ATPase: Mg2+/Zn2+ cofactors+AMPK V1-V0 reassembly; LC3-II:I ratio +15–25%; p62 turnover; protein aggregate (αSyn/tau) −10–25%. NK: low (metformin additive; HCQ mechanistic opposition negligible clinically).
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Science·4 March 2027·8 min read·MembersSpirulina and cytochrome P450 phase I metabolism: CYP1A1/CYP3A4/CYP2E1/CYP2D6 enzyme modulation, AhR-CYP1A1 induction, haem iron cofactor, NADPH-P450 reductase, and drug/xenobiotic oxidation
CYP phase I: CYP3A4 (50% drugs; PXR); CYP1A2 (caffeine/theophylline; AhR); CYP2D6 (codeine/TCA; polymorphic); CYP2E1 (ethanol/NAPQI/CCl4; highest uncoupling→H2O2; NASH driver); CYP1A1 (extrahepatic; AhR-PAH; CYP1B1 avoided); P450 cycle: Fe3+→CPR→Fe2+→O2→compound I→substrate oxidation; uncoupling: O2•−/H2O2 product. Spirulina: PCB→AhR partial agonism→CYP1A1 +10–20% (PAH detox; NOT CYP1B1 catechol-oestrogen pathway); Nrf2→NQO1 +25–40% (quinone reduction; phase I/II coupling); CYP2E1-H2O2 −20–35% (Nrf2-GSH/TRX/PRX scavenging; phycocyanin CCl3•); NAPQI-GSH hepatoprotection +25–40% GSH reserve; haem: Fe2+ FECH+B6-ALAS support; CPR FAD/FMN: riboflavin B2. CYP3A4: minimal modulation (no PXR). NK: low (CYP interactions minor at supplement doses).
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Science·4 March 2027·8 min read·MembersSpirulina and calcium/calmodulin signalling: CaMKII α/β/γ/δ autophosphorylation, calcineurin/NFAT dephosphorylation, STIM1/Orai1 store-operated Ca²⁺ entry, SERCA2b/RyR regulation, and eNOS/MLCK Ca²⁺-CaM activation
Ca2+/CaM signalling: IP3R (Cys2547 oxidation→Ca2+ leak→CaMKII/calcineurin amplification); RyR (Cys-S-nitrosylation; CICR); SERCA2b (Cys674 sulphenylation activating/sulphonylation inhibiting; Ca2+ re-uptake); STIM1/Orai1 SOCE (ER Ca2+ depletion→STIM1 puncta→Orai1 CRAC); CaMKII (Thr286 autophosphorylation→constitutive; Met281/282 oxidative activation; RyR2/PLN/HDAC4/5); calcineurin-NFAT (CaN-CsA/FK506 target; IL-2/IL-5/VEGF-hypertrophy); eNOS (CaM 493–512; Akt Ser1177→CaM-independent basal). Spirulina: Nrf2-PRX4→IP3R Cys2547 protection→Ca2+ release −15–25%; PKC↓→IP3 feedback↓; SERCA2b Cys674 sulphenylation preservation→Ca2+ re-uptake +15–25%; CaMKII Thr286 −10–20% (Ca2+ amplitude↓+TRX Met281/282 reduction); NFAT nuclear −15–25% (CaN↓+eNOS-NO); eNOS +10–20% (Akt Ser1177+AMPK+BH4). NK: low.
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Science·4 March 2027·8 min read·MembersSpirulina and selenoprotein biology: GPx1–4 glutathione peroxidases, TXNRD1/2/3 thioredoxin reductases, selenoprotein P/SELENOP transport, DIO1/2/3 deiodinases, MSRB1 methionine-sulphoxide repair, and selenium bioavailability
Selenoproteins (25 human; Sec incorporation via SECIS/SBP2/eEFSec UGA recoding): GPx1/2/3/4 (H2O2/ROOH/PLOOH scavenging; GSH co-substrate; GPx4 ferroptosis gatekeeper); TXNRD1/2 (Sec498/655; NADPH→TRX-SS→TRX-SH; wide substrate; Nrf2/ARE; auranofin target); SELENOP (10 Sec; plasma Se transport; ApoER2 brain delivery); DIO1/2/3 (Sec133; T4→T3; DIO2 BAT/pituitary; Mg2+-adrenodoxin reductase); MSRB1 (Sec95; Met-R-SO repair). Spirulina: Se ~0.1–0.3 μg/g organic SeMet; GPx1/2/4 +10–20% (Nrf2-GPx2+Se provision+GSH+30–45%); TXNRD1 +15–40% (Nrf2/ARE+Se+FAD/B2); SELENOP +5–10% (AMPK→FoxO3a+Nrf2); DIO2 +5–15% (Se/Mg2+ marginal); MSRB1 −10–20% protein carbonyl; ferroptosis markers −20–35%. NK: low (add Se supplement; auranofin/cisplatin caution).
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Science·25 February 2027·8 min read·MembersSpirulina and mevalonate/isoprenoid pathway: HMGCR/AMPK regulation, CoQ10/ubiquinol synthesis, dolichol-N-glycosylation, farnesyl/geranylgeranyl protein prenylation, and Ras/Rho membrane targeting
Mevalonate/isoprenoid: HMG-CoA→HMGCR (AMPK Ser872 phospho-inactive; statin target)→mevalonate→IPP/DMAPP→FPP branches: (A) CoQ10 (PDSS1/2 Mg2+-decaprenyl-PP+4-HB→COQ2-9→ubiquinone-10; ETC mobile carrier; ubiquinol antioxidant); (B) dolichol (DHDDS Mg2+→Dol-P; DPAGT1 N-glycosylation→OST→Asn glycoprotein folding); (C) FTase/GGTase-I (Ras farnesyl; RhoA/Rac1/Cdc42 geranylgeranyl). Spirulina: AMPK→HMGCR Ser872→mevalonate −15–25%; CoQ10 +10–20% (PGC-1α→PDSS1/2+Mg2+/FAD/Tyr); ubiquinol:ubiquinone +15–25%; ER stress GRP78/CHOP −15–25% (Mg2+-DPAGT1+Nrf2-BiP); RhoA-ROCK −10–20% (AMPK Ser188+eNOS-NO S-nitrosylation); GGTase-I substrate −10–20%. NK: low (statin users: CoQ10 co-supplementation advisable).
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Spirulina and vitamin D/VDR signalling: Mg²⁺-CYP27B1 1,25(OH)₂D₃ synthesis, VDR protein expression, Nrf2-VDR crosstalk, cathelicidin LL-37, and CYP24A1 catabolism regulation
Vitamin D/VDR: CYP27A1 (25-OH liver)/CYP27B1 (1α-hydroxylase kidney/macrophage; adrenodoxin reductase Mg2+-dependent); VDR (1,25(OH)2D3→RXRα→VDRE→cathelicidin/CAMP/p21/CYP24A1); CYP24A1 (catabolic; Nrf2-ARE suppressed); cathelicidin/LL-37 (VDRE+Nrf2+Zn2+). Spirulina: NO vitamin D3; Mg2+ (+60–80 mg/10g)→CYP27B1 adrenodoxin reductase→1,25(OH)2D3 +10–20% (Mg2+-deficient); VDR protein +10–20% (NF-κB relief+Nrf2-ARE); cathelicidin/LL-37 +10–20%; CYP24A1 −5–10% (Nrf2); 25-OH-D3 unchanged. NK: low (hypercalcaemia monitor).
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Science·25 February 2027·8 min read·MembersSpirulina and ketone body metabolism: HMGCS2/SIRT3 mitochondrial deacetylation, BDH1/BDH2 interconversion, βOHB-HDAC inhibition epigenetics, GPR109A/HCAR2 signalling, and NLRP3 inflammasome suppression
Ketone body metabolism: HMGCS2 (Lys310/447/473 acetylation→inactive; SIRT3 NAD+-deacetylation→active; PPAR-α/FGF21 transcription); SCOT (extrahepatic ketolysis); BDH1 (AcAc↔βOHB; NAD+/NADH); BDH2 (Fe-S cluster assembly); HCAR2/GPR109A (βOHB receptor; Gi; anti-inflammatory). Spirulina: HMGCS2 SIRT3 +15–25% (AMPK→NAD+); BDH1/2 NAD+/Fe-S support; HCAR2 convergence→NF-κB↓/NLRP3↓; βOHB HDAC2/3 H3K9ac→FOXO3a +10–20%; IL-1β −20–35% (NLRP3+βOHB synergy); fasting βOHB +15–25%. NK: low.
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Science·25 February 2027·8 min read·MembersSpirulina and choline/phosphatidylcholine metabolism: CDP-choline Kennedy pathway, PEMT SAM-dependent methylation, PS synthase I/II, betaine-BHMT homocysteine recycling, and TMAO microbiome axis
Choline/PC metabolism: Kennedy pathway (choline→CK→phosphocholine→CCT rate-limiting→CDP-choline→CPT1→PC); PEMT (PE→PC 3×SAM; liver; SAM-demanding); PS synthase I/II (PC/PE→PS; Ca2+ ER); betaine (choline→CHDH/BADH→betaine→BHMT→Hcy−5–10%); TMAO (gut CutC/D TMA→FMO3→TMAO cardiovascular risk). Spirulina: PC ~1.5–2g/100g direct; PEMT SAM support (Met/B2/folate; B12 supplement mandatory); betaine→BHMT→Hcy −5–10%; TMAO −10–20% (AMPK→microbiome Akkermansia/Lactobacillus; sulphur AA competitive); plasma PC +5–10%; SAM:SAH +5–10%; liver steatosis −15–25% (VLDL assembly PC sufficiency). NK: low (B12 supplement mandatory).
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Science·25 February 2027·8 min read·MembersSpirulina and sulfotransferase phase II detoxification: SULT1A1/SULT1E1/SULT2A1 induction, PAPS sulphate donor provision, oestrogen sulphation, catecholamine/paracetamol sulphate conjugation, and BPA detoxification
Sulfotransferases: PAPS donor (ATP+sulphate→PAPSS1/2→PAPS; Mg2+); SULT1A1 (phenol/paracetamol/dopamine-SO4; Nrf2/ARE); SULT1E1 (oestrogen E2-SO4 clearance; liver/endometrium); SULT2A1 (DHEA-SO4/bile acid; PXR); SULT1B1 (T3-SO4; intestinal). Spirulina: SULT1A1 +15–25% (Nrf2/ARE); SULT1E1 oestrogen clearance +10–20%; SULT2A1 +10–20% (Nrf2+PXR); PAPS: Mg2+ (PAPSS1/2 cofactor) + Cys/Met sulphate provision; paracetamol-SO4 +10–20% (safe pathway shift from NAPQI); catecholamine-SO4 +5–15%; BPA sulphation detoxification; thyroid T3-SO4 (iodide recycling). NK: low.
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Spirulina and glycogen metabolism: GSK3β/GS activation, AMPK glycogen-sensing CBM domain, GP/PLP phosphorylase B6 cofactor, GLP-1/DPP-4 axis, and exercise glycogen resynthesis
Glycogen metabolism: GS (GSK3β Ser641/645/648/651/654→inactive; PP1/Akt Ser9-GSK3β Ser9→GSK3β inactive→GS active); GP (PLP-Lys680 Schiff base; GPa phospho-active/GPb AMP-activated); AMPK β1/β2 CBM glycogen sensing; GLP-1 (L-cell; DPP-4 rapid degradation→GLP-1R→Gs→cAMP→PKA→insulin). Spirulina: GSK3β Ser9 +15–25% (IRS-1 Ser307 AMPK→S6K1↓; adiponectin→PTP1B→IR Tyr→IRS-1→PI3K→Akt→GSK3β Ser9→GS active); PLP/B6 (~0.4–0.8 mg/100g) GP Lys680 Schiff base; AMPK CBM sensing; GLP-1 +10–20% (DPP-4 −20–30%; L-cell GPR41/43); glycogen resynthesis +10–20%; HOMA-IR −15–25%. NK: low.
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Science·25 February 2027·8 min read·MembersSpirulina and NAD⁺ salvage pathway: NAMPT/NMN biosynthesis, SIRT1/SIRT3 deacylase activation, CD38 NADase attenuation, PARP1 competition, and mitochondrial NAD⁺ pool maintenance
NAD+ metabolism: de novo (Trp→kynurenine→ACMSD→QPRT→NaMN→NMNAT→NAD+); salvage (Nampt: Nam+PRPP→NMN+PP; NMNAT1/2/3→NAD+; rate-limited by NAMPT); consumers: SIRT1/2/3/6/7 (deacetylases; NAM product inhibitor), PARP1/2 (DNA repair; ~100–500 NAD+ per strand break), CD38/CD157 (cADPR/NAADP; calcium signalling; major NAD+ consumer in ageing/inflammation); NAD+/NADH redox; NADP+/NADPH. Spirulina: Trp ~0.3–0.5g/100g de novo NAD+; NAMPT +15–25% (AMPK→PGC-1α→NAMPT transcription; SIRT1 auto-amplification); CD38 mRNA −15–25% (NF-κB↓/quercetin flavonoid/IL-6-STAT3 attenuation); PARP1 −15–25% (Nrf2 DNA protection→less strand breaks); NAD+ +10–20%; SIRT1 +15–25%; SIRT3→MnSOD Lys68 −20–35% mtROS; IDH2 K413 deacetylation→NADPH. NK: low.
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Spirulina and renin-angiotensin system: ACE inhibitory peptides, AT1R/AT2R downstream signalling, NOX2/p47phox RAS-ROS axis, ACE2 upregulation, and aldosterone/blood pressure modulation
RAS: renin (juxtaglomerular; Ang→Ang I)→ACE (somatic/pulmonary; dipeptidyl carboxypeptidase; Zn2+; Ang I→Ang II; bradykinin→inactive)→Ang II: AT1R (Gq/G12; NF-κB/NOX2/ROCK/PKC/ERK/Aldosterone; vasoconstriction/fibrosis/inflammation) vs AT2R (anti-inflammatory/vasodilatory); ACE2 (Ang II→Ang1-7→MAS-R; vasodilatory; SARS-CoV-2 entry); RAAS aldosterone (MR→ENaC/Na+K+-ATPase). Spirulina: ACE inhibitory peptides (Ile-Ala-Pro IC50 ~0.15 mM; hydrolysate IC50 ~0.5–2 mg/mL); SBP −5–8 mmHg (12-week meta); AT1R downstream: PKC-α/βII −25–40%/NOX2 p47phox −30–45%→Ang II-ROS −20–35%; ACE2 mRNA +10–20% (AMPK/eNOS-NO/NF-κB); aldosterone −5–15% (K+ provision; NF-κB adrenal); bradykinin sparing (ACE inhibition). NK: low.
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Science·25 February 2027·8 min read·MembersSpirulina and phospholipid signalling: PLC-β/γ/δ isoforms, PKC-α/βII C1 domain regulation, IP3R Ca²⁺ mobilisation, PI(4,5)P2 pool dynamics, and DAG/PKC inflammatory attenuation
Phospholipid signalling: PLC-β (Gq/G11-coupled; GPCR; IP3+DAG); PLC-γ (RTK; EGFR/PDGFR/TCR; Tyr783 pY); PLC-δ (Ca2+-sensor; feedback amplification); DAG→PKC-α/βII (C1 domain; diacylglycerol+phorbol ester; NF-κB IKKβ, AP-1 upstream); IP3 (IP3R Ca2+ ER release→CaM-kinase II/PKC/NFAT); PI(4,5)P2 pool (PIP-kinase/PI-PLC balance; PTEN TRX1 regulation); lipid raft caveolae. Spirulina: PCB IC50 ~5–20 μM PKC-α/βII C1 domain competitive binding→PKC −25–40% (NF-κB/AP-1 attenuation; mast cell degranulation −20–35%; platelet TXA2-PKCβII −15–25%); IP3R Ca2+ attenuation −15–25% (Nrf2-PRX4/GSH-SERCA Cys674 protection→ER Ca2+ homeostasis); phytosterol lipid raft modulation (β-sitosterol displaces cholesterol); PTEN Cys124 redox maintenance→PI(4,5)P2 pool. NK: low.
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Science·25 February 2027·8 min read·MembersSpirulina and retinoid signalling: β-carotene/BCO1 provitamin A cleavage, RAR/RXR-RARE nuclear receptor, retinoic acid mucosal immunity, FOXP3 Treg induction, and RAR-NF-κB transrepression
Retinoid signalling: β-carotene (~170 mg/100g spirulina; BCO1 central cleavage→2 retinal→RALDH→all-trans-RA; BCO2 eccentric→β-apo-carotenals); RAR/RXR heterodimer (RARE DR5 motif; SMRT/NCoR→HAT recruitment→target gene activation); RAR transrepression: RAR-NF-κB p65 direct interaction→NF-κB −10–15%; mucosal: RA→RALDH2 dendritic cells→CCR9/α4β7 gut-homing Treg; FOXP3+ Treg induction +10–20% (RA+TGF-β); sIgA plasma cells +10–20% (Peyer's patches); skin: RAR→KRT10/involucrin epithelial differentiation; vision: rhodopsin 11-cis-retinal (BCO1-derived). Spirulina: β-carotene +50–100% plasma; sIgA +10–20%; FOXP3+ Treg +10–20%; NF-κB −10–15%; skin differentiation markers +5–15%. NK: low.
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Science·18 February 2027·8 min read·MembersSpirulina and lactate metabolism: MCT1/MCT4 monocarboxylate transporters, LDH-A/LDH-B isoform balance, lactate shuttle inter-organ axis, lactylation histone epigenetics, GPR81/HCAR1 signalling, and Warburg effect modulation
Lactate metabolism: LDHA (glycolytic; M1 macrophage Warburg; HIF-1α/NF-κB target)/LDHB (oxidative; heart/liver/brain lactate→pyruvate→OXPHOS); MCT1/SLC16A1 (high-affinity import; oxidative tissues; PGC-1α/T3-driven)/MCT4/SLC16A3 (low-affinity export; glycolytic cells/hypoxic tumour); Cori cycle; GPR81/HCAR1 (Gi; lactate ~5–15 mM→AC↓→cAMP↓→HSL↓→anti-lipolytic; neuroprotective); lactylation (H3K18la/H3K23la; epigenetic activation; inflammatory and resolution gene programming). Spirulina: NF-κB↓ −30–45% + AMPK HIF-1α Thr485→HIF-1α −20–30%→LDHA −15–25%→inflammatory Warburg lactate −15–25%; MCT1 +10–20% (AMPK→PGC-1α→ERRα; thyroid hormone); mitochondrial biogenesis→OXPHOS→exercise lactate −10–20%; GPR81: lactate optimal 5–10 mM maintenance; H3K18la at IL-1β −10–20%; fasting lactate −5–10%. NK: low.
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Science·18 February 2027·8 min read·MembersSpirulina and hydrogen peroxide signalling: PRX1–6 peroxiredoxin/TRX thioredoxin relay, H2O2 sulfenylation/sulfinylation, PTEN Cys124 redox, Keap1 Cys151/273/288 sensing, and beneficial vs pathological ROS thresholds
H2O2 signalling thresholds: 0.1–1 μM (VEGF-R2/PTP1B Cys215, eNOS, Keap1 Cys151/273/288 graded Nrf2, PTEN Cys124 reversible SOH); >1 μM toxic (PTEN Cys71-Cys124 disulphide irreversible; ATM; lipid peroxidation); PRX1–5 (2-Cys; kcat ~10^7 M−1s−1; TXNRD1/TRX1 relay; PRX-SOH→disulphide→TRX reduces); PRX overoxidation: PRX-SO2H (floodgate→H2O2 surge→TXNIP/ASK1/p38); SRXN1/sulfiredoxin (Nrf2/ARE; ATP-dependent PRX-SO2H→PRX-SOH repair ~0.1 min−1). Spirulina: Nrf2→TXN1/PRX1/PRX5/TXNRD1 +25–40%; TRX2/TXNRD2 mitochondrial +20–30%; SRXN1 +20–30%; Keap1 Cys151 PCB alkylation→graded Nrf2; PTEN Cys124 redox: TRX1↑→Cys71-Cys124 faster reduction; sustained pAkt −15–25%; 8-isoprostane −20–35%; VEGF/eNOS H2O2 physiological pulse preserved. NK: low (caution with H2O2-generating chemotherapy).
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Spirulina and purinergic signalling: P2X7/P2Y12/A2A adenosine receptors, CD39/CD73 ectonucleotidase cascade, ATP/ADP/AMP/adenosine axis, NLRP3 P2X7 gate, and anti-inflammatory adenosine production
Purinergic system: P2X7 (ATP→K+ efflux→NLRP3→IL-1β/pyroptosis; Cys S-nitrosylation sensitive); P2Y12 (ADP platelet Gi; clopidogrel target); A2A (adenosine Gs→cAMP→PKA→NF-κB↓/IL-10↑/eNOS Ser633→NO→vasodilation; T cell suppression); CD39/NTPDase1 (ATP/ADP→AMP); CD73/5′-nucleotidase (AMP→adenosine). Spirulina: AMPK AMP:ATP↑→adenosine precursor pool; Nrf2/ARE→CD73 +15–25% (SLC16A1 ARE); AMPK→FoxP3+ Treg→CD39 +10–20%; IL-10 +10–20%→CD73 macrophage; A2A: adenosine↑+PDE −10–20%→cAMP +10–20%→PKA→NF-κB↓/eNOS Ser633; P2X7 gate: eNOS-NO→Cys S-nitrosylation −10–20% K+ efflux; CD39→ATP→AMP (less P2X7 ligand); Mg2+ P2X7 allosteric inhibition; post-exercise uric acid −10–20% (AMPD/XOR mild inhibition). NK: low (caffeine A2A competition; timing manageable).
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Science·18 February 2027·8 min read·MembersSpirulina and branched-chain amino acid metabolism: BCAT1/2 transamination, BCKDH/BCKDK complex, leucine-mTORC1 Sestrin2/RagC signalling, KIC/KIV/KMV catabolism, and muscle/liver BCAA flux
BCAAs (Leu/Val/Ile; ~35% EAA): BCAT1 (cytoplasmic)/BCAT2 (mitochondrial)→BCKAs (KIC/KMV/KIV)+glutamate; BCKDH complex (E1α/β TPP-dependent/E2 lipoic acid/E3 FAD; rate-limiting; BCKDK kinase Ser293/303 phosphorylation→inactive; PP2Cm phosphatase→active); Leu→Sestrin2-GATOR2 dissociation→RagA-GTP→mTORC1; obesity: BCKDK↑→plasma BCAA↑→mTORC1/S6K1→IRS-1 Ser307→insulin resistance. Spirulina: Leu ~0.9g/100g (10g dose ~90 mg Leu; additive mTORC1/S6K1→MPS +10–20%); AMPK→SIRT3 (NAD+)→BCKDH-E2 deacetylation→BCKDH activity↑; BCKDK protein −15–25%; plasma BCAA −10–20%; HOMA-IR −10–20%; thiamine B1 (0.3–0.5 mg/100g)→BCKDH E1 TPP cofactor; succinyl-CoA (Val/Ile)→porphyrin+TCA; muscle BCAT2→exercise anaplerosis. NK: low (mTOR inhibitor caution).
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Science·18 February 2027·8 min read·MembersSpirulina and glutamine metabolism: GLS/GLS2 glutaminase, α-KG TCA anaplerosis, mTORC1 Rag GTPase sensing, GABA synthesis, GSH precursor role, and immune cell glutaminolysis
Glutamine: GLS1 (kidney/immune; BPTES target)/GLS2 (liver; SIRT4)→glutamate+NH4+→GDH→α-KG→TCA anaplerosis; GSH (γ-GCL substrate); GABA (GAD65/67); mTORC1: SLC38A9/SLC1A5→RagA/B GTP→mTORC1 lysosomal recruitment; cancer: Myc→GLS1 overexpression→glutamine addiction; nitrogen donor: purines/pyrimidines/hexosamine/asparagine. Spirulina: direct Gln ~50–65 mg/g (1.0–1.3g/100g); enterocyte/immune cell fuel provision; AMPK→mTORC1 Raptor Ser792→Gln-mTORC1 rebalancing; Myc −10–15%→GLS1 −10–20% cancer; SIRT3 (AMPK/NAD+)→BCKDH/GDH deacetylation; Nrf2→γ-GCL GCLC/GCLM +30–45%→GSH +20–40% (glutamate substrate+enzyme); GAD65 substrate+spirulina B6 (PLP cofactor)→GABA +5–10%. NK: low (avoid with CB-839 GLS inhibitor cancer therapy).
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Spirulina and aryl hydrocarbon receptor: AhR/ARNT transcription, CYP1A1/CYP1B1 xenobiotic metabolism, AhR/Nrf2 crosstalk, tryptophan-indole-AhR ligands, and competitive dioxin binding
AhR (PAS-domain; cytoplasmic HSP90/XAP2 complex→ligand binding→ARNT heterodimerisation→XRE TGCGTG→CYP1A1/1A2/1B1, NQO1, ALDH3A1, IL-17/IL-22, FoxP3 Treg; TIPARP negative feedback; ligands: TCDD/dioxin highest affinity; dietary: quercetin/resveratrol/indolo[3,2-b]carbazole; endogenous: kynurenine, FICZ, IAA/IPA). Spirulina: PCB partial AhR agonism (AhR Thr289/His291 ligand domain; CYP1A1 +10–20% (low physiological)); microbiome IAA/IPA +15–25% (Lactobacillus tryptophan→indoles); IL-22 intestinal +5–10%; competitive AhR occupancy: quercetin/β-carotene/RAR→TCDD CYP1A1 −15–25%/B[a]P DNA adducts −10–20%; AhR-Nrf2 crosstalk: NQO1/ALDH3A1 ARE+XRE co-induction +20–35%. CYP1A1 +10–20%, NQO1 +20–35%, IAA/IPA +15–25%, TCDD CYP1A1 −15–25%. NK: low.
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Science·18 February 2027·8 min read·MembersSpirulina and cGAS-STING pathway: cytosolic dsDNA sensing, cGAMP synthesis, STING/TBK1/IRF3 activation, type I interferon, NF-κB co-activation, and mtDNA release attenuation
cGAS-STING: cytosolic dsDNA (viral/mtDNA/micronuclei)→cGAS GTP+ATP→2′,3′-cGAMP→STING ER→TGN trafficking→TBK1 Ser172→IRF3 Ser396→IFN-β/ISGs; STING→IKKβ→NF-κB (IL-6/TNF-α); STING Cys88/91 palmitoylation; ENPP1 degrades extracellular cGAMP. Spirulina: BCL-2/mPTP-GSH-CypD→MOMP threshold↑→cytosolic mtDNA −20–35%; Nrf2→TRX2/TXNRD2/TFAM→8-OHdG mtDNA −25–40% (less potent cGAS ligand); STING-IKKβ-NF-κB −15–25% (IKKβ target); IRF3/IFN-β preserved (TBK1 not targeted); ENPP1 Zn2+ cofactor support→cGAMP degradation; ISG15/MxA +5–10% baseline. mtDNA cytosolic −20–35%, IFN-β preserved, STING-NF-κB −15–25%. NK: low (avoid with STING agonist cancer immunotherapy).
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Spirulina and NLRP3 inflammasome: NLRP3/ASC/caspase-1 assembly, IL-1β/IL-18 maturation, gasdermin D pyroptosis, mtROS/K+ efflux priming, and Nrf2/NF-κB dual-gate suppression
NLRP3 inflammasome (NLRP3-ASC-procaspase-1; two-signal: Signal 1 NF-κB→NLRP3/pro-IL-1β transcription; Signal 2: K+ efflux/P2X7/NEK7, mtROS/TXNIP, lysosomal rupture, Ca2+→NACHT oligomerisation→caspase-1→IL-1β/IL-18/GSDMD pores→pyroptosis). Spirulina dual-gate: Signal 1 NF-κB −30–45%→NLRP3 protein −15–25%/pro-IL-1β −25–40%; Signal 2 mtROS: Nrf2→TXNRD2/TRX2/MnSOD/PRX3 →TXNIP-NLRP3 −20–30%; mitophagy (AMPK)→dysfunctional mito removed; PCB NACHT docking IC50 ~10–50 μM; K+ efflux: eNOS-NO→P2X7 S-nitrosylation −10–20%; Mg2+ P2X7 allosteric inhibition; Ca2+ SERCA preservation. IL-1β −25–40%, caspase-1 −20–35%, NLRP3 −15–25%, LDH pyroptosis −20–30%. NK: low (colchicine/MCC950 complementary).
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Science·18 February 2027·8 min read·MembersSpirulina and toll-like receptor signalling: TLR4/MD-2/LPS, MyD88/TRIF/IRF3, NF-κB/type I interferon, TIRAP sorting adaptors, and innate immune modulation
TLR4/MD-2/LPS→TIRAP/MyD88→IRAK4/1→TRAF6→TAK1→IKKβ→NF-κB (TNF-α/IL-1β/IL-6/IL-12) + p38/JNK/AP-1; TRIF/TRAM→TBK1/IKKε→IRF3 Ser396→IFN-β/ISGs (antiviral) + RIP1→NF-κB. Spirulina: PCB TLR4/MD-2 partial competitive binding (IC50 ~5–20 μM PCB)→NF-κB −25–40%; calcium spirulan LPS sequestration; MyD88/IRAK1/TRAF6: A20 +10–15%→NF-κB termination ↑; CYLD deubiquitinase TRAF6-K63Ub −15–20%; TRIF/IRF3/IFN-β: not suppressed (TBK1 not targeted); sulphated polysaccharide TLR3 priming→IFN-β ±10%; microbiome TLR2 tolerogenic: Lactobacillus LTA +10–20%; LPS-binding protein −10–20%; IL-10 +10–20%. NK: low.
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Science·18 February 2027·8 min read·MembersSpirulina and TGF-β/SMAD signalling: TβRI/TβRII receptor kinase, SMAD2/3 phosphorylation, SMAD7 negative feedback, Nrf2/SMAD3 antagonism, and anti-fibrotic modulation
TGF-β superfamily: canonical SMAD2/3 (TGF-β/activin; T βRI/TβRII→SMAD2/3 pSer465/467→SMAD4→SBE→COL1A1/COL3A1/PAI-1/CTGF/α-SMA) and SMAD1/5/8 (BMP/ALK1/2/3/6); non-SMAD: TAK1/p38/JNK, PI3K/Akt, RhoA/ROCK; SMAD7 (I-SMAD; Nrf2/IFN-γ/NF-κB inducible; SMURF1/2→TβRI degradation; PP2A→SMAD2/3 dephosphorylation). Spirulina: NF-κB↓ −30–45%→TGF-β1 mRNA −20–35% (macrophage/HSC); pSMAD2/3 −15–25%; Nrf2-CBP/p300 competition→SMAD3 transcriptional output −15–25%; SMAD7 +15–25% (Nrf2/ARE); RhoA/ROCK eNOS-NO Ser188 −10–20%; EMT E-cadherin/vimentin −15–20%; wound collagen preserved +10–20%. Anti-fibrotic: liver Sirius Red −20–35%, CTGF −20–30%, PAI-1 −15–25%. NK: low.
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Science·11 February 2027·8 min read·MembersSpirulina and apoptosis pathways: Bcl-2/Bax/Bak intrinsic mitochondrial pathway, cytochrome c/APAF-1/caspase-9 apoptosome, TRAIL/DR4/5/FADD extrinsic caspase-8, NF-κB anti-apoptotic IAPs/Bcl-xL, and Nrf2 survival signalling
Apoptosis: intrinsic (BH3-only BIM/PUMA/NOXA/BAD→BAX/BAK oligomerisation→MOMP→cytochrome c→APAF-1 apoptosome (7-mer)→caspase-9→caspase-3/7; BCL-2/BCL-xL/MCL-1 anti-apoptotic); extrinsic (TRAIL→DR4/DR5→FADD→caspase-8-DISC→tBID→BAX type II; caspase-3 type I); NF-κB anti-apoptotic: BCL-2 (κB-3.6kb)/BCL-xL (multiple κB)/MCL-1/survivin (BIRC5; caspase-9 BIR3)/XIAP (caspase-3/7/9)/cFLIP (DISC block); Smac/DIABLO (IMS→MOMP→XIAP displacement). Spirulina CONTEXT-DEPENDENT: Normal cells (Nrf2→Trx1/TXNRD1 +25–35%→ASK1-Trx↑→p38/JNK apoptosis↓; Nrf2 ARE→BCL-2 +10–20%; GSH→CypD-Cys203→mPTP↑ threshold −15–25%); cancer cells (NF-κB −30–45%→BCL-2 −15–25%→BAX:BCL-2 +20–35%; survivin −20–35% NF-κB+STAT3; XIAP/cFLIP −15–25%→caspase-8 de-repressed; caspase-3 +15–25%; TRAIL sensitisation −35–55% viability with co-treatment; p53 MDM2 −15–25%→p53 +10–20%→PUMA/BAX). BAX:BCL-2 +20–35%; survivin −20–35%; caspase-3 +15–25% (cancer); normal cell −15–25% apoptosis. NK: low (venetoclax/chemo context).
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Science·11 February 2027·8 min read·MembersSpirulina and cell cycle checkpoints: Cyclin D1/CDK4/6/RB pathway, p21/CDKN1A-Nrf2, p53 tumour suppressor, CDK2/cyclin E S-phase, CDK1/cyclin B mitosis, and anti-proliferative vs. immune/wound healing cell cycle support
Cell cycle: G1/S (Cyclin D1/CDK4/6→pRB partial phospho→Cyclin E/CDK2→pRB hyperphospho→E2F→S); S/G2 (CHK1/2→CDC25A); G2/M (Cyclin B/CDK1→MPF); p53 (ATM/ATR→Ser15→MDM2↓→p21/CDKN1A→CDK2/4/6 inhibition); p21 (ARE Nrf2-dependent +15–25%; PIP box PCNA; CDK inhibitor; cancer-specific checkpoint); CDK4/6i (palbociclib/ribociclib; RB pathway). Spirulina: NF-κB −30–45%→Cyclin D1 (CCND1 κB sites) −15–30% (cancer/hyperproliferative); JNK −25–35%→c-Jun Ser63↓→AP-1-CCND1 −10–20%; NF-κB→DKK1 de-repressed→Wnt-CCND1↓; Nrf2→p21/CDKN1A ARE +15–25%→CDK2 inhibition→G1 arrest (ROS-damaged cells); p53: NF-κB→MDM2 −15–25%→p53 +10–20%; Akt→MDM2 Ser166 context; physiological: VEGF-A/TGF-β→fibroblast cycle preserved; IL-2/STAT5→T-cell clonal expansion preserved; EPO→erythroblast CDK2 preserved. Ki-67 −15–25%; Cyclin D1 −15–30%; p21 +15–25%; p53 +10–20%. NK: low (CDK4/6i oncology).
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Science·11 February 2027·8 min read·MembersSpirulina and acute phase response: CRP/SAA/fibrinogen hepatic synthesis, IL-6/IL-1β/TNF-α APR cytokines, STAT3/NF-κB hepatocyte signalling, negative APR proteins albumin/transferrin, and hepcidin anaemia of inflammation
APR: positive APR (IL-6/IL-1β/TNF-α→hepatocyte gp130→JAK1/TYK2→STAT3 Tyr705→CRP/SAA1/SAA2/fibrinogen α/β/γ (APRE STAT3+C/EBPβ); ferritin; hepcidin (HAMP STAT3→FPN1↓→iron sequestration→ACD)); negative APR (NF-κB→albumin↓/transferrin↓/transthyretin↓/RBP4↓); CRP (pentameric→monomeric at inflammatory sites→NF-κB/VCAM-1; LOX-1; complement C1q; cardiovascular marker; hs-CRP target <1 mg/L); SAA (HDL-associated; displaces apoA-I; amyloid A); fibrinogen (clotting; STAT3; thrombosis risk). Spirulina: IL-6 −25–40% (NF-κB/IKKβ)→JAK1-STAT3 Y705 −25–40%→CRP −15–30%; SAA −20–35%; fibrinogen −10–20%; SIRT1→STAT3 K685 deac; NF-κB↓→albumin p65-repressor relieved +5–10%; C/EBPα restored→albumin/transferrin +5–10%; AMPK→hepatocyte protein synthesis maintained; amino acid provision (60–70% protein); hepcidin −15–25% (IL-6/STAT3; HO-1/CO BMP-SMAD; ERFE indirect); Hb +0.3–1.0 g/dL ACD; mCRP-NF-κB downstream −; Nrf2→C1-INH complement. hs-CRP −15–30%; fibrinogen −10–20%; albumin +5–10%; hepcidin −15–25%. NK: low (warfarin monitoring).
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Spirulina and the endocannabinoid system: CB1/CB2 receptor signalling, 2-AG/AEA endocannabinoid synthesis, FAAH/MAGL degradation enzymes, TRPV1/GPR55 ionotropic cannabinoid targets, and ECS in inflammation/pain/metabolism
ECS: CB1 (Gi/Go; CNS; hepatic DNL FASN/ACC↑→steatosis; rimonabant withdrawn); CB2 (Gi; immune; β-arrestin2→NF-κB↓; β-caryophyllene dietary agonist Ki ~155 nM); AEA (anandamide; NAPE-PLD; FAAH Ser241 degradation; TRPV1 agonist/desensitiser); 2-AG (DAGLα→PLC-γ→DAG; MAGL Ser122; primary CB2 agonist); TRPV1 (capsaicin; heat; AEA; Ca²⁺/calcineurin desensitisation→analgesia); GPR55 (LPI/AEA; Gα13→Rho; energy regulation). Spirulina: GLA (1.1g/100g)→FADS1→DGLA→AA→DAGLα substrate→2-AG/AEA biosynthesis supported; NF-κB↓→COX-2↓→AA→endocannabinoid routing (not PGE2/TXA2); CB2: NF-κB−30–45%+β-caryophyllene (trace sesquiterpene)→CB2 Gi→cAMP↓→NF-κB convergence→TNF-α/IL-6 −25–40%; FAAH: NF-κB↓→FAAH mRNA −10–20%→AEA/OEA/PEA accumulation→CB2/PPARα/TRPV1 desensitisation; Nrf2→FAAH Ser241 oxidative protection; OEA PPARα agonism (+5–15%); hepatic CB1: AMPK+PPARα oppose CB1-SREBP-1c lipogenesis; NF-κB→CB1 −10–20% (NAFLD)→hepatic TG −20–35%. CB2 −25–40%; hepatic TG −20–35%; OEA +5–15%. NK: low.
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Science·11 February 2027·8 min read·MembersSpirulina and neuropeptide signalling: NPY/Y1-Y5 appetite regulation, VIP/VPAC1/VPAC2 anti-inflammatory neuropeptide, CGRP calcitonin gene-related peptide vasodilation, substance P/NK1R neurogenic inflammation, and mast cell neuropeptide crosstalk
Neuropeptides: NPY (Y1R appetite/adipogenesis; Y2R autoreceptor; Y5R; arcuate nucleus; sympathetic co-NE); VIP (28-aa; VPAC1 Gs/Gi; cAMP→PKA→NF-κB↓/IL-10↑; Treg/Th2 shift; anti-IBD/RA; VPAC2 circadian); CGRP (37-aa; CLR/RAMP1 Gs; vasodilator; trigeminal C/Aδ; erenumab target; migraine); SP (11-aa; NK1R Gq→PLCβ→IP3/Ca²⁺/PKC→NF-κB→VCAM-1/IL-8; mast cell NK1R degranulation; NEP Zn²⁺ degradation). Spirulina: NPY: adiponectin +15–25%→AdipoR1→AMPK→leptin sensitivity→arcuate NPY −10–20%; IL-6 −25–40%→SOCS3↓→leptin resistance↓; phycocyanin→ileal L-cell→GLP-1→NPY↓; VIP: NF-κB −30–45%+phycocyanin PDE −10–20%→cAMP↑→PKA (VIP-VPAC1 convergent)→IL-10 +15–25%; CGRP: AMPK→eNOS Ser1177 (parallel CGRP-PKA; additive NO)→vasodilation; BH4 preserved; SP: NK1R-PKC: phycocyanin C1-DAG competition −20–30%; NF-κB −30–45%→VCAM-1/IL-8↓; mast cell stabilisation −20–30%; NEP Zn²⁺ (spirulina 2.4mg/100g). NPY −10–20%; SP −10–20%; mast cell histamine −20–30%; IL-10 +15–25%. NK: low.
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Spirulina and one-carbon metabolism: MTHFR/THF/5-MTHF folate cycle, SAM/SAH methylation cycle, homocysteine remethylation/transsulfuration, B12/B9 cofactors, DNMT substrate SAM, and methylation-dependent gene regulation
OCM: folate cycle (DHFR→THF; SHMT1 Ser+THF→Gly+5,10-meTHF; TYMS dTMP; MTHFR irreversible 5-MTHF; FAD cofactor; MTHFR 677C>T TT ~10% Mediterranean/Turkish); methionine cycle (5-MTHF+Hcy→MS/MTR B12→Met; MAT1A/2A→SAM; methyltransferase SAM+substrate→SAH; SAHH→Hcy; BHMT betaine B12-independent); transsulfuration (CBS B6 Ser+Hcy→cystathionine; CSE B6→Cys+H2S; Cys→GSH; CBS SAM allosteric activation); SAM consumers: DNMT/PRMT/COMT/HNMT/PEMT. Spirulina: B12 (trace; ~10–20 μg/100g; largely pseudo-B12/adeninylcobamide; CAUTION pseudo-B12 antagonism; supplement methylcobalamin separately; Hcy −5–10% in B12-adequate); folate/B9 (~94–180 μg/100g; THF pool; B2/FAD MTHFR support; Ser 3.7g/100g SHMT1; nucleotides reduce purine PPP demand); SAM: Met (0.5g/100g)+B12→MS→MAT; betaine from choline ~60–100mg/100g→BHMT→Met; AMPK→MAT1A preserved; CBS: B6+SAM allosteric+Ser→transsulfuration→Cys→GSH +15–30%; H2S +10–20%. Hcy −5–10%; GSH +15–30%; SAM:SAH +5–15%. NK: low (B12 mandatory; methotrexate caution).
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Spirulina and sphingolipid metabolism: ceramide SPT/CERS synthesis, sphingomyelin/SMase hydrolysis, sphingosine-1-phosphate S1PR1-5 axis, PP2A/Akt ceramide-insulin resistance, and AMPK ceramidase
Sphingolipids: ceramide (SPT: SPTLC1/2+ORMDL3; CERS1-6; DEGS1; NF-κB→SPTLC2/CERS5/6; pro-apoptotic PP2A/Akt; insulin resistance); SM pathway (nSMase Mg2+; TNF-α→TNFR1→FAN→nSMase→ceramide; GSH-sensitive; aSMase lysosomal/stress); ceramidase (ACER2 AMPK target; ASAH1 lysosomal)→sphingosine→SphK1/2→S1P; S1PR1-5 (Gi; S1PR1: lymphocyte egress/eNOS; S1PR2: NF-κB); ceramide→PP2A→Akt deP→FOXO1 nuclear/BAD active→insulin resistance/apoptosis; BAX activation; cathepsin D. Spirulina: NF-κB −30–45%→SPTLC2 −15–25%→de novo ceramide −15–25%; GLA→palmitoyl-CoA:PUFA-CoA ratio ↓ (SPT substrate); CERS5/6 −10–20%; AMPK→ACER2 stability +20–35%→ceramide→sphingosine→SphK1→S1P↑→S1PR1 eNOS; GSH +15–30%→nSMase Cys-inhibition maintained; TNF-α −25–40%→nSMase −15–25%; eNOS-NO→nSMase Cys131 S-nitrosylation; ceramide −15–25%→PP2A−→Akt Thr308 +10–20%→FOXO1 cytoplasmic. Ceramide −15–25%; S1P/ceramide +10–20%; Akt +10–20%; HOMA-IR −15–25%. NK: low.
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Science·11 February 2027·8 min read·MembersSpirulina and hexosamine pathway: GFAT/HBP UDP-GlcNAc synthesis, OGT/OGA O-GlcNAcylation, NF-κB p65/SP1 O-GlcNAc, insulin resistance hexosamine flux, and diabetic glycation crosstalk
HBP: GFAT (rate-limiting; SPTLC1/2; F-6-P+Gln→GlcN-6-P; AMPK Ser243 inactivation; UDP-GlcNAc feedback inhibition); UDP-GlcNAc (OGT substrate; GAG synthesis; N-glycosylation dolichol-P); O-GlcNAcylation (OGT adds; OGA removes; Ser/Thr competition with phosphorylation; diabetes/obesity hyperactivation); O-GlcNAc targets: p65-Thr322/352 (NF-κB enhanced); SP1-Thr668 (PAI-1/fibronectin); FOXO1; eNOS-Thr495 (inhibitory); Akt-Ser473 conflict; IRS-1 (inhibitory); T2DM→hyperglycaemia→F-6-P↑→GFAT↑→UDP-GlcNAc↑→global O-GlcNAc↑. Spirulina: AMPK→GFAT-Ser243 (+20–35% phospho-inactive)→UDP-GlcNAc −15–25%→O-GlcNAc −15–25%; AMPK→PFKFB3-F-2,6-BP→PFK1→F-6-P competition away from GFAT −5–10%; NF-κB −30–45%→p65-O-GlcNAc-Thr322 −15–25%; SIRT1→OGT K720 deac −10–15%; eNOS-Thr495 O-GlcNAc −10–20%→eNOS Ser1177 active→NO +15–25%; Nrf2→GRP78 +15–25%→ER stress −20–30%; AMPK→mTORC1↓→protein load↓; IRS-1 Ser307 −15–25% (combined HBP+IKKβ). O-GlcNAc −15–25%; HOMA-IR −15–25%; ER stress −20–30%. NK: low (avoid with glucosamine in T2DM).
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Science·11 February 2027·8 min read·MembersSpirulina and glycolysis/pentose phosphate pathway: HK2/PFK1/PKM2 Warburg effect, G6PD/6PGD PPP NADPH, HIF-1α glycolytic gene induction, Nrf2-G6PD, lactate/MCT4, and metabolic reprogramming
Glycolysis: HK2 (HIF-1α/NF-κB; OMM binding); PFK1 (PFKFB3/F-2,6-BP allosteric; AMPK Ser461); PKM2 (M2 dimer nuclear→STAT3 kinase/HIF-1α/β-catenin/H3-Thr11; Cys358 oxidation→dimer; tetramer active glycolysis); LDHA/MCT4 (HIF-1α target; lactate efflux); Warburg (inflammatory macrophage NF-κB→PFKFB3; succinate/itaconate HIF-1α amplification); PPP: G6PD (rate-limiting; Nrf2/ARE; NADPH×2; product inhibition; G6PD deficiency X-linked); 6PGD (NADPH); R-5-P (nucleotide synthesis). Spirulina: AMPK→PFKFB3-Ser461 (physiological muscle glycolysis↑); NF-κB −30–45%→inflammatory PFKFB3 −15–25%→Warburg↓→itaconate/succinate/IL-1β↓; Nrf2→G6PD ARE +20–35%; 6PGD +10–20%; NADPH/NADP+ +20–35%→GSH recycling/eNOS/TXNRD1; PKM2 nuclear −15–25% (Nrf2 Cys358 protection + NF-κB/STAT3↓); LDHA −15–25% (NF-κB); MCT4 −10–20% (HIF-1α↓); succinate→PHD2→HIF-1α normoxic suppression. G6PD +20–35%; NADPH +20–35%; HK2 −15–25%; IL-1β −20–35%. Dosing: 5–10g daily. NK: low.
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Science·11 February 2027·8 min read·MembersSpirulina and cholesterol metabolism: HMG-CoA reductase/HMGCR, LDLR/PCSK9 LDL clearance, CYP7A1 bile acid synthesis, ABCA1/ABCG1 reverse cholesterol transport, and NPC1L1 intestinal absorption
Cholesterol metabolism: HMGCR (rate-limiting; AMPK Ser872 inactivation; statin target; SREBP2 feedback); LDLR (PCSK9: NF-κB target→FPN degradation→LDLR loss; evolocumab/alirocumab); RCT (ABCA1/ABCG1 LXRα/Nrf2→apoA-I→HDL; SR-B1 hepatic→CYP7A1 bile acid); NPC1L1 (intestinal; phytosterol competition; ezetimibe); phytosterols (β-sitosterol ~50–150mg/100g). Spirulina: AMPK (PCB Complex I)→HMGCR Ser872 −30–45%→cholesterol synthesis −15–25%; NF-κB −30–45%→inflammatory PCSK9 −15–25%→LDLR +15–25%; Nrf2→CYP27A1→27-OHC→LXRα→ABCA1/ABCG1 +15–25%; PPARγ→LXRα→ABCA1; NF-κB↓→ABCA1 de-repressed; GLA/EPA modest PCSK9 −5–10%; phytosterol NPC1L1 competition −5–10% absorption; sulphated polysaccharides→bile acid binding→CYP7A1↑→hepatic cholesterol↓. LDL-C −5–18%; TC −8–12%; HDL-C +5–10%; TG −10–20%. Dosing: 4–10g daily. NK: low.
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Science·4 February 2027·8 min read·MembersSpirulina and gluconeogenesis: PEPCK/PCK1/PCK2 rate-limiting step, FBPase-1 fructose-1,6-bisphosphatase, G6Pase catalytic subunit, FOXO1/PGC-1α G6PC/PCK1 transcription, AMPK-TORC2/CRTC2 CREB coactivator suppression, and hepatic glucose output
GNG pathway: PC (Pyr+CO2→OAA; biotin/acetyl-CoA); PEPCK1/PCK1 (OAA→PEP; rate-limiting; glucagon→PKA→CREB-CRE/CRTC2/PGC-1α; insulin→Akt→FOXO1 nuclear exclusion); FBPase-1 (F-1,6-P2→F-6-P; AMP allosteric inhibition); G6Pase/G6PC (ER; terminal; T2DM upregulated; FOXO1+NF-κB direct kB site); CRTC2/TORC2 (CREB co-activator; Ser171 AMPK/SIK→14-3-3 cytoplasmic; de-phospho fasting→nuclear; LKB1-SIK parallel); FOXO1 (IBE in G6PC/PCK1; Akt-Thr24/Ser256 exclusion; SIRT1 K242/245 deac→nuclear (fasting)). Spirulina: AMPK→CRTC2 Ser171 phosphorylation (LKB1-SIK indirect)→CRTC2 cytoplasmic→CREB-PGC-1α-PCK1 −20–35%/G6PC −15–25%; AMPK→CBP Ser436→CREB-CBP −15–25%; IRS-1 Ser307 −15–25% (NF-κB/IKKβ; ceramide↓)→PI3K/Akt Thr308 +10–20%→FOXO1 Thr24/Ser256 +10–20%→nuclear FOXO1 −15–25%→G6Pase/PEPCK −15–25%; ceramide −15–25% (NF-κB→SPT2/AMPK→ceramidase)→PP2A-Akt deP ↓; NF-κB-G6PC kB −15–25%; FBPase-1: AMPK/AMP allosteric −10–15%; fasting physiology: SIRT1-PGC-1α-GNG appropriate (hypoglycaemia prevention; net T2DM: GNG↓; healthy fasting: maintained). FBG −10–20 mg/dL; PCK1 −20–35%; G6Pase −15–20%; HbA1c −0.3–0.8%. Dosing: 5–10g daily (hypoglycaemia monitor with secretagogues). NK: low.
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Science·4 February 2027·8 min read·MembersSpirulina and fatty acid oxidation: CPT1/CPT2 carnitine transport, LCAD/MCAD β-oxidation enzymes, AMPK ACC phosphorylation, PPARα FGF21/ACOX1 transcription, ketogenesis HMGCS2, and mitochondrial lipid fuel flux
FAO pathway: ACSL1 (FA→acyl-CoA); CPT1a/b (OMM; malonyl-CoA inhibited; rate-limiting; L-carnitine substrate)→CACT→CPT2→β-oxidation (VLCAD/LCAD: FADH2; LCHAD: NADH; thiolase: acetyl-CoA)→TCA/ETC; ACOX1 (peroxisomal; PPARα target); ketogenesis: HMGCS2 (hepatic; fasting; PPARα/FGF21 driven)→HMG-CoA→BDH1→β-OHB. ACC (ACC1 Ser79/ACC2 Ser212; AMPK substrates→inactivation→malonyl-CoA↓→CPT1 derepressed); PPARα (LCFA/EPA ligands; RXRα; PPRE→ACOX1/LCAD/CPT1a/FGF21/HMGCS2). Spirulina: AMPK (PCB Complex I→AMP:ATP↑→LKB1-AMPK Thr172)→ACC1 Ser79/ACC2 Ser212 −30–45%→malonyl-CoA −20–35%→CPT1a/b derepressed +15–25%; palmitate oxidation +15–25% (¹⁴C assay; hepatocyte/cardiomyocyte); PPARα: GLA/EPA (C18:3/C18:2→C20:3/C20:4→EPA→PPARα LBD IC50 ~1–5 μM); AMPK→PGC-1α→PPARα/RXRα→PPRE→ACOX1/LCAD +15–25%; SIRT1→PGC-1α K183/K450 deac; carnitine: Lys(4.5g/100g)/B3(12mg/100g)/ascorbate→endogenous carnitine synthesis (BBOX1); NF-κB−→SPT2↓→ceramide −15–25%→PP2A-Akt→FAO improvement; hepatic TG −20–35% (NAFLD/HFD models). Malonyl-CoA −20–35%; CPT1 +15–25%; palmitate oxidation +15–25%; ACOX1 +15–25%. Dosing: 5–10g daily. NK: low.
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Science·4 February 2027·8 min read·MembersSpirulina and iron metabolism: hepcidin/ferroportin axis, DMT1/transferrin receptor absorption, ferritin IRE/IRP regulation, haem synthesis/ALAS2, Fenton reaction iron chelation, and anaemia of chronic disease
Iron metabolism: DCytB (Fe³⁺→Fe²⁺; ascorbate co-factor; HIF-2α regulated)→DMT1 (SLC11A2; Fe²⁺ apical uptake)→FPN1/ferroportin (SLC40A1; only iron exporter; hepcidin→FPN1 internalisation→lysosomal degradation); hepcidin (HAMP; BMP6/SMAD1/5/8 iron-sensing; IL-6/STAT3 inflammatory; EPO/ERFE suppression); IRP1 (apo: IRE-binding→ferritin translation↓/TfR1 stable; holo: Fe-S aconitase)/IRP2 (FBXL5 Fe-replete ubiquitination); ferritin H (ferroxidase; ARE target)/L (nucleation); ALAS2 5′-IRE (B6 Schiff-base; sideroblastic anaemia without B6); LIP (chelatable Fe²⁺; Fenton: Fe²⁺+H2O2→•OH). Spirulina: phytochelated Fe²⁺ (bypasses DCytB pH requirement; bioavailability ~20–28% vs. FeSO4 ~8–12%); phytate-free/low tannin; hepcidin: IL-6 −25–40%→STAT3-HAMP −20–35%→hepcidin −15–25%→FPN1 preserved→macrophage Fe export; SIRT1→STAT3 K685 deac; HO-1-CO→BMP-SMAD-hepcidin −10–15%; IRP balance: Fe provision→IRP1 Fe-S→ferritin translation→LIP controlled; PCB Fe²⁺ chelation (KD ~10⁻⁷M)→Fenton •OH −20–35%; FTH1 Nrf2/ARE +10–20%; ALAS2 B6 provision→haem synthesis; Hb +0.5–1.5 g/dL (IDA 12w). Ferritin +15–25%; Hb +0.5–1.5 g/dL; hepcidin −15–25%; LIP −20–35%. Dosing: 5–10g + vitamin C. NK: low (haemochromatosis contraindication).
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Spirulina and epigenetics/chromatin: DNMT1/3a/3b DNA methylation, HDAC1/2/3/SIRT1 histone deacetylation, HAT p300/CBP acetylation, H3K4me3/H3K27me3 histone methylation, Nrf2 ARE CpG demethylation, and NF-κB chromatin remodelling
Epigenetics: DNA methylation (5mC CpG; DNMT1 maintenance; DNMT3a/3b de novo; SAM methyl donor; TET1/2/3 5mC→5hmC→demethylation; Fe²⁺/2-OG); histone mods: H3K9ac (active; p300/CBP/PCAF; HDAC1/2/3/SIRT1 removal), H3K27ac (enhancer; p300), H3K4me3 (active; MLL), H3K27me3 (repressive; EZH2/PRC2), H3K9me3 (heterochromatin; SUV39H1); BRD4 (H3K9ac→P-TEFb→elongation→NF-κB targets). Spirulina: SIRT1 (AMPK→NAD+/NAMPT +20–35%; phycocyanin allosteric +15–25%)→H3K9 deacetylation at IL-6/TNF-α/MCP-1/COX-2 promoters −20–35%→closed chromatin; SIRT1→p65 K310 deacetylation −20–30%→BRD4 displacement; p300/CBP HAT: quercetin/PCB partial inhibition (IC50 ~5–15 μM)→p65-K310ac −15–25%→H3K9/K18ac at NF-κB loci −15–25%; TET2 Nrf2-ARE induction→5hmC at HMOX1/NQO1 ARE +10–20% (CpG demethylation); DNMT3a-NF-κB (NF-κB↓→DNMT3a tumour suppressor methylation ↓); EZH2: AMPK→EZH2 Thr487 PRC2 disruption→H3K27me3 −10–20%; NF-κB→EZH2 −15–25%; SIRT1→EZH2 K348 deacetylation; SAM (B12/folate→DNMT maintenance). H3K9ac −20–35%; p65-K310ac −15–25%; SIRT1 +15–25%; 5hmC +10–20%. Dosing: 5–10g daily. NK: low.
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Spirulina and DNA damage response: ATM/ATR kinase activation, γH2AX DSB sensing, BRCA1/2 homologous recombination, p53/p21 cell cycle checkpoint, NHEJ Ku70/80/DNA-PKcs, and 8-OHdG oxidative DNA damage
DDR: 8-OHdG/8-oxoG (•OH/1O2→G-C8; OGG1 BER; G→T transversion); DSB (ATM-MRN: H2AX Ser139→γH2AX; CHK2-Thr68→CDC25A→G1/S; p53 Ser15/20); ATR (ssDNA-RPA→ATRIP→CHK1-Ser317); NHEJ (Ku70/80→DNA-PKcs-Ser2056→Artemis→Pol μ/λ→Lig4/XRCC4); HR (S/G2; MRN-CtIP→RPA→BRCA2-RAD51); BER (OGG1→APE1→Pol β→Lig3/XRCC1); NQO1/GST detoxification. Spirulina: •OH scavenging: PCB (k≈10¹⁰ M⁻¹s⁻¹; direct nuclear DNA protection); Nrf2→GPx1/Cat/SOD1 (+20–40%)→H2O2→H2O (Fenton prevention); Fe²⁺ chelation (PCB bilins→Fenton suppressed); urinary 8-OHdG −20–40% (T2DM/MetS 12–16w); γH2AX foci −25–40% (H2O2 challenge); ATM preservation (PCB→Cys2991 redox maintenance); p53: NF-κB→MDM2 −15–25%→p53 stabilised +10–20%; OGG1 Nrf2/ARE +15–25%; APE1 Nrf2 +10–20%; Trx1 TXNRD1 +20–35%→APE1 Cys65 reduction; NQO1 +35–55% (electrophile adduct prevention); comet tail DNA −20–35%. 8-OHdG −20–40%; γH2AX −25–40%; NQO1 +35–55%. Dosing: 5–10g daily (chemo/RT timing caution). NK: moderate.
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Spirulina and ubiquitin-proteasome system: E1/E2/E3 cascade, K48/K63 polyubiquitin chains, 26S/20S proteasome, Nrf2/Keap1 CRL3 ubiquitination, NF-κB IκBα degradation, and p62/SQSTM1 selective autophagy
UPS: Ub (76-aa; K48: proteasomal; K63: signalling/autophagy; Met1: LUBAC/NF-κB); E1→E2→E3 (RING/HECT/RBR) cascade; 26S (20S CP β1/β2/β5 + 19S RP lid/base); Keap1-CRL3-Rbx1 (RING E3; Keap1 Cys151/273/288 sensor; K48-Nrf2 Lys→26S; t½ ~20 min); IκBα (SCF-β-TrCP CRL1; IKKβ-Ser32/36 phospho→K48-Ub→26S→NF-κB nuclear); p62/SQSTM1 (PB1/UBA; K63-Ub cargo→LC3-II→selective autophagy; STGE/Ser349→Keap1 Kelch competition); DUBs (USP14/UCH37: 19S-associated; Ub recycling). Spirulina: PCB→Keap1 Cys151 alkylation (IC50 ~2–5 μM)→Keap1-Nrf2 ETGE disrupted→Nrf2 K48-Ub −30–50%→Nrf2 nuclear +40–80%; p62 Nrf2-ARE target +20–35%→K63-Ub cargo clearance (aggrephagy/mitophagy); IKKβ −30–45%→IκBα Ser32/36 phospho −25–35%→IκBα cytoplasmic +20–35%→NF-κB brake restored; PGAM5-Keap1 (PCB Cys151→Keap1-PGAM5 disrupted); Nrf2→PSMD11/PSMC5/PA28α (+10–20%)→20S CP enhanced; Ub aggregates −10–20%. Nrf2 +40–80%; p62 +20–35%; IκBα +20–35%; 20S +10–20%. Dosing: 5–10g daily (bortezomib oncology caution). NK: low.
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Spirulina and calcium signalling: IP3R/RyR ER calcium release, SERCA pump, PMCA/NCX extrusion, CaM/CaMKII activation, eNOS-CaM coupling, mPTP CypD, and NFATc1/calcineurin pathway
Ca²⁺ signalling: resting [Ca²⁺]i ~100 nM (ER ~100–500 μM; mitochondria ~0.1–1 μM; extracellular ~1.2 mM); IP3R (ER; IP3+Ca²⁺ gating; PLC-β/γ→IP3; bell-shaped Ca²⁺ dependence); RyR1/2/3 (ER/SR; Ca²⁺-induced Ca²⁺ release; CICR; FK506-binding/FKBP12.6); SERCA1a/2a/2b (ER/SR reuptake; SERCA2b ubiquitous; Cys674 oxidation→SERCA inactivation→Ca²⁺ overload; PLB phospho-Ser16 relieves SERCA inhibition→lusitropic); PMCA/NCX (plasma membrane extrusion); CaM (calmodulin; 4 EF-hands; 4 Ca²⁺→CaM-TFP conformer; activates: CaMKII α/β/γ/δ (Thr286 autophosphorylation→autonomous), eNOS (eNOS-CaM-BH4-Arg→NO), calcineurin (CaN; PP2B; NFAT dephosphorylation→nuclear)); mPTP (mitochondrial permeability transition pore; CypD (cyclophilin D; PPIase; matrix; mPTP sensitiser; CsA target; oxidative stress Cys203→S-glutathionylation→mPTP opening→ΔΨm collapse→cytochrome c→apoptosis)). Spirulina: IP3R/[Ca²⁺]i: NF-κB→IP3R Ser2657 phosphorylation channel sensitisation→[Ca²⁺]i elevation (pathological); spirulina NF-κB −30–45%→[Ca²⁺]i −15–25% in LPS/cytokine models; SERCA: Nrf2→GPx4/Trx1→SERCA Cys674 protected from ONOO⁻/H2O2 oxidation→SERCA activity preserved (+10–20%); eNOS-CaM: AMPK→eNOS Ser1177+CaM binding→NO; BH4 (DHFR/Nrf2) preserved→eNOS-CaM-NO +15–25%; mPTP: CypD Cys203 protected (Nrf2 GSH→CypD-SH preserved)→mPTP threshold↑→[Ca²⁺]mito tolerance improved→apoptosis threshold elevated −15–25%; NFATc1/calcineurin: [Ca²⁺]i −15–25%→CaN activity −20–30%→NFATc1 nuclear −20–30% (osteoclast/T-cell). [Ca²⁺]i −15–25%; SERCA +10–20%; eNOS-NO +15–25%; mPTP −15–25%; NFATc1 −20–30%. Dosing: 5–10g daily. NK: low.
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Science·4 February 2027·8 min read·MembersSpirulina and MAPK/ERK pathway: p38α/β MAPK, JNK1/2, ERK1/2, ASK1/TRAF6/MKK3-6 stress kinase cascade, DUSP1/MKP-1 phosphatase, c-Jun/ATF2 AP-1, and inflammatory vs. proliferative MAPK outputs
MAPK families: ERK1/2 (growth/proliferation: RTK→Ras→Raf→MEK1/2→ERK1/2; Elk-1/c-Fos/RSK; Raf inhibition: PP2A/RKIP; ERK1/2 nuclear: cyclin D1, c-Myc), p38α/β (stress/inflammatory: ASK1 (TRAF6→ASK1 Ser967/Thr845 auto; ROS→Trx dissociation→ASK1), MKK3/MKK6→p38; substrates: MK2→HSP27/TTP; ATF2→AP-1; p38→PGC-1α Ser570 dephosphorylation relief→thermogenesis), JNK1/2 (ceramide/ER stress/MKK4/MKK7→JNK; c-Jun Ser63/73; IRS-1 Ser307→insulin resistance; Bax activation→apoptosis); DUSP1/MKP-1 (dual-specificity phosphatase 1; dephosphorylates p38/JNK Thr-Glu-Y; Nrf2/ARE target; SIRT1 deacetylation stabilises MKP-1). Spirulina: p38: TRAF6 −20–30% (NF-κB/IKKβ)→MKK3/6→p38α −20–30%; ASK1: Trx1 (Nrf2/TXNRD1 +25–35%)→ASK1-Trx complex preserved→reduced ROS-activated ASK1; JNK: ceramide −15–25%→MKK4/7→JNK1/2 −25–35%; ER stress: Nrf2→GRP78/PERK-eIF2α mild activation (adaptive UPR; not apoptotic) reduces IRE1α-JNK; DUSP1/MKP-1 (Nrf2/ARE +20–30%; SIRT1-MKP-1 stabilisation +10–20%)→p38/JNK dephosphorylation +20–30%; c-Jun Ser63 −20–30%; ERK1/2 physiological (AMPK may modestly inhibit Raf→MEK→ERK proliferative; preserves wound-healing ERK; not blanket suppressor). p38 −20–30%; JNK −25–35%; MKP-1 +20–30%; c-Jun −20–30%. Dosing: 5–10g daily. NK: low.
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Science·4 February 2027·8 min read·MembersSpirulina and PI3K-Akt pathway: PI3K class IA/IB p110α/β/δ/γ, PIP3/PDK1/Akt Thr308, PTEN tumour suppressor, mTORC2 Akt Ser473, FOXO3a, GSK-3β, and insulin signalling restoration
PI3K-Akt: RTK/GPCR→PI3K (p110α/β/δ/γ + p85α/β/γ regulatory)→PIP3 (from PIP2; Km ~10 μM)→PDK1 (PH domain→PIP3)→Akt1/2/3 Thr308 (activation loop; partial); mTORC2 (Akt Ser473; hydrophobic motif; full activation; mTORC2 assembly: mTOR+Rictor+mLST8+DEPTOR+Sin1); PTEN (3′-phosphatase; PIP3→PIP2; tumour suppressor; Cys124 catalytic; ROS-sensitive Cys71/124 disulfide oxidation→PTEN inactivation→PIP3↑; ONOO⁻→PTEN nitration; Nrf2 protects); downstream: GSK-3β (Akt→GSK-3β Ser9 inhibitory phosphorylation→β-catenin/glycogen synthase/RUNX2 stable), FOXO3a (Akt→Thr32/Ser253 cytoplasmic→survival; nuclear FOXO3a: MnSOD/CAT/Bim/p27), BAD Ser136 (anti-apoptotic), MDM2 Ser166 (p53↓→survival). Spirulina: IRS-1 Ser307 −15–25% (NF-κB/IKKβ; ceramide↓)→IRS-1 Tyr→PI3K p85 recruitment→PIP3 +10–15%; PTEN Nrf2-GPx4/ONOO⁻ protection (Cys124 disulfide ↓20–30%)→PTEN active; mTORC2/Akt-Ser473: AMPK→DEPTOR release→mTORC2 assembly preserved; GSK-3β Ser9 +10–20%→β-catenin/RUNX2; FOXO3a context: cytoplasmic (survival; insulin context) vs. nuclear (MnSOD; antioxidant; both relevant). Akt Thr308 +10–20%; PTEN Cys124 protection; GSK-3β Ser9 +10–20%; FOXO3a cytoplasmic. Dosing: 5–10g daily. NK: low.
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Science·4 February 2027·8 min read·MembersSpirulina and JAK-STAT signalling: JAK1/2/3/TYK2 kinase activation, STAT1/3/5/6 phosphorylation, SOCS1/3 negative feedback, cytokine receptor gp130/IL-6R, and pSTAT3-Y705 oncogenic suppression
JAK-STAT: cytokine→receptor dimerisation→JAK trans-phosphorylation→STAT SH2 docking→STAT pY→nuclear→GAS elements; JAK1/2: IL-6/IFN-γ/EPO/GH; JAK3: IL-2/4/7/15 (γc); TYK2: IFN-α/β/IL-12; SOCS1/3 (negative feedback: JAK SH2 binding→JAK inhibition; SOCS3: IL-6/STAT3 dampening); pSTAT3-Y705 (oncogenic: IL-6→JAK1/2→STAT3→Bcl-2/Mcl-1/cyclin D1/VEGF-A/MMP-9; elevated in PDAC/HCC/NSCLC/RA/IBD). Spirulina: IL-6 −25–40% (NF-κB/IKKβ)→JAK1 activation reduced→pSTAT3-Y705 −25–40%; SOCS3 (Nrf2/IL-10 axis +15–25%→JAK1/2 SH2 binding→STAT3 suppression); phycocyanin→JAK2 ATP competitive partial inhibition (IC50 ~20–50 μM; modest direct); STAT6 (IL-4/13→JAK1/TYK2→STAT6→GATA3/IL-4Rα/eotaxin; allergic; NF-κB↓→IL-13 −15–25%→STAT6 −15–25%); STAT1 (IFN-γ→JAK1/JAK2→STAT1→IRF1/GBP1/CXCL10; innate; preserved/Nrf2 does not impair IFN-γ-STAT1); STAT5 (EPO/GH→JAK2→STAT5→Bcl-xL/cyclin D1; haematopoiesis preserved). pSTAT3 −25–40%; IL-6 −25–40%; SOCS3 +15–25%; STAT6 −15–25%; STAT1 preserved. Dosing: 5–10g daily. NK: low.
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Spirulina and Notch signalling: Notch1-4/DLL1-4/Jagged1-2 ligands, γ-secretase NICD, CSL/RBPJ target genes, Notch in T-cell/vascular/intestinal biology, and NF-κB/HIF-1α Notch crosstalk
Notch pathway: EGF/LNR extracellular→ADAM10/17 (S2)→γ-secretase PS1/2 (S3)→NICD→CSL/RBPJ displaces CoR+recruits MAML/p300→HES1/5/HEY1/cyclin D1/VEGF-A; NF-κB-Notch: p65→Jagged1/HES1 κB sites; NICD→IKKα→NF-κB; NICD+p65 nuclear cooperation; DLL4 (HIF-1α/HRE→tip cell; stalk VEGFR-2↓); SUFU/FBXW7 (NICD PEST-CDK8→β-TrCP ubiquitination); SIRT1→NICD deacetylation→FBXW7 accessibility↑. Spirulina: NF-κB −30–45%→Jagged1 NF-κB −15–25%; p65↓→NICD-p65 cooperation −; IKKα (TRAF6↓); SIRT1 AMPK/NAD+ +10–20%→NICD deacetylation→FBXW7 turnover→NICD −10–20%; Nrf2→presenilin-1 Cys protection (γ-secretase productive); HIF-1α/DLL4 physiological wound: CO/HO-1→HIF-1α+15–25%→DLL4 maintained; eNOS-NO→γ-secretase modulation (modest); intestinal: NF-κB↓→DLL4↓→ATOH1 de-repression→goblet cell +10–20%→MUC2↑; Treg Notch-HES1-FoxP3 +10–20%. HES1 −15–25%; NICD −10–20%; FoxP3 +10–20%. Dosing: 5–10g daily. NK: low.
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Spirulina and Hedgehog signalling: Shh/Ptch1/Smo/Gli1-3 pathway, SUFU negative regulation, primary cilia IFT, Hh in stem cell maintenance/tissue repair, and Gli1 NF-κB crosstalk
Hh pathway: Shh-Np (cholesterol+palmitate; HSPG gradient)→Ptch1 internalisation→SMO de-repression at primary cilia→Kif7-Gli complex tip→SUFU dissociation→Gli2A/3A nuclear→HES1/cyclin D1/Snail/VEGF-A/Bcl-2; Gli1 NF-κB-non-canonical (κB sites in Gli1 promoter; NF-κB→Gli1→NF-κB positive feedback); primary cilia (IFT-B anterograde kinesin-2; IFT-A retrograde dynein-2; ROS-sensitive IFT-B/BBS Cys oxidation); SUFU stability (Hsp70/90/CK2 dependent). Spirulina: NF-κB −30–45%→Gli1 non-canonical −15–25% (PDAC/NSCLC/inflammatory models); p65↓→NICD-p65 cooperation↓→Gli1 at shared promoters; JNK↓→AP-1/Gli1; Nrf2→GSH/Hsp70→IFT-B Cys protection→cilia +5–15%; NF-κB→AURKA/HDAC6 cilia disassembly −; SUFU (Nrf2-Cys protection/Hsp70 folding +5–15%); anti-TGF-β + Nrf2→SUFU from ROS→hepatic stellate Gli1+ −15–25% (NASH fibrosis −20–35%); IL-6/STAT3/Gli −25–40%. Gli1 −15–25%; liver collagen −20–35%. Dosing: 5–10g daily. NK: low.
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Science·28 January 2027·8 min read·MembersSpirulina and Wnt signalling: β-catenin/APC/Axin/CK1α/GSK-3β destruction complex, Frizzled/LRP5-6/Dvl, TCF/LEF target genes, non-canonical Wnt/PCP/Ca2+ pathways, and Wnt in bone/stem cells/colon cancer
Canonical Wnt: destruction complex (APC+Axin+CK1α-Ser45+GSK-3β-Ser33/37→β-TrCP→proteasome); Wnt→Dvl→LRP5/6 phosphorylation→Axin sequestration→β-catenin S33/37 unphosphorylated→nuclear→TCF/LEF: cyclin D1/c-Myc/Lgr5/DKK1/VEGF-A; DKK1 (LRP5/6 sequestration; NF-κB-driven in inflammation/bone); non-canonical PCP (Dvl→RhoA/Rock/Rac1/JNK; Wnt5a inflammatory) + Ca²⁺ (Gq→PLCβ→NFATc1). Spirulina: GSK-3β: AMPK→Akt→GSK-3β-Ser9 inhibitory +10–20%→β-catenin S33/37↓→active β-catenin +10–20% (osteoblast/ISC); DKK1: NF-κB −30–45%→DKK1 −15–25% (bone marrow stromal; inflammatory); SIRT1 (AMPK/NAD+)→β-catenin Lys49 deacetylation/TCF4 deacetylation→Wnt gene expression; Keap1 occupied by PCB→Dvl2 freed from Keap1 ubiquitination→Wnt enhanced; HO-1-CO→sGC-cGMP-PKG→GSK-3β-Ser9; Wnt5a/non-canonical: NF-κB →Wnt5a −15–25%; JNK −25–35%→IL-6 attenuation. β-catenin +10–20%; DKK1 −15–25%; RUNX2/osteocalcin +10–20%; BMD +1–3%. Caution: APC-mutant CRC. Dosing: 5–10g daily. NK: low.
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Science·28 January 2027·8 min read·MembersSpirulina and mTOR signalling: mTORC1/S6K1/4E-BP1 protein synthesis, AMPK/TSC1-2/Rheb regulation, Ragulator/GATOR amino acid sensing, mTORC2/Akt/SGK1, and autophagy ULK1 inhibition
mTOR complexes: mTORC1 (RAPTOR/mLST8; rapamycin-sensitive; lysosomal surface; Rheb-GTP from TSC1/2-Akt axis; Rag GTPases AA sensing via Ragulator/GATOR2/GATOR1/sestrin2-Leu/CASTOR1-Arg/SAMTOR-SAM; outputs: S6K1-Thr389→ribosome biogenesis/IRS-1 Ser307 feedback; 4E-BP1-Thr37/46→eIF4E→cap translation; ULK1-Ser757→autophagy↓; TFEB-Ser211→cytoplasmic); mTORC2 (RICTOR; rapamycin-insensitive; Akt-Ser473; SGK1; PKCα). Spirulina: AMPK→TSC2-Ser1387 (Rheb-GDP) + RAPTOR-Ser792 (14-3-3)→mTORC1 −15–30%; S6K1-Thr389 −15–30%→IRS-1-Ser307 −15–25% (insulin sensitivity); 4E-BP1-Thr37/46 −10–20% (cyclin D1/VEGF-A translation↓); ULK1 AMPK-Ser317 + mTORC1-Ser757↓→autophagy↑→LC3B-II +15–25%; TFEB-Ser211↓→nuclear TFEB +15–25%→LAMP1/cathepsin B; mTORC2/Akt-Ser473 preserved (RICTOR not AMPK substrate); FOXO3a anti-apoptotic; AA sensing: Leu ~90mg/5g (sestrin2); SAM/Met (SAMTOR); context: metabolic/SASP/neurodegeneration (mTORC1↓ beneficial); muscle anabolic (mTORC1 physiological; AMPK deactivated in recovery). Dosing: 5–10g daily. NK: low.
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Science·28 January 2027·8 min read·MembersSpirulina and amyloid/tau: BACE1/γ-secretase Aβ42 generation, tau CDK5/GSK-3β hyperphosphorylation, TFEB/autophagy aggregate clearance, neuroinflammation NLRP3/NF-κB, and ApoE4/cholesterol risk modulation
Aβ cascade: APP→BACE1 (NF-κB/STAT3 promoter; β-site)→C99→γ-secretase (PS1/2)→Aβ42 (oligomers: LTP↓/AMPA internalization/mito Ca²⁺); non-amyloidogenic: ADAM10 (α-site→sAPPα); tau: CDK5/p25 (calpain-ROS)+GSK-3β (Akt-Ser9 inhibitable)→Ser396/Thr231→NFT→axonal transport failure. Spirulina: BACE1: NF-κB −30–45%→BACE1 mRNA −20–30%; IL-6/STAT3 −25–40%→BACE1 STAT3 site −; Nrf2-ROS loop break (BACE1 ROS→BACE1 cycle); ADAM10 Nrf2 ARE +10–20%; GSK-3β: AMPK→Akt→GSK-3β Ser9 +10–20%→τ-Ser396/Thr231 −15–25%; CDK5/p25: calpain↓ (ROS↓/Ca²⁺↓); TFEB: AMPK→mTORC1 RAPTOR-Ser792→TFEB S211 dephosphorylation→nuclear +15–25%; LAMP1/cathepsin B +15–25%; autophagy LC3B-II +15–25%; Aβ oligomer −20–30%; NLRP3 −25–35% (Aβ-stimulated microglia); NF-κB −30–45%→IL-1β/TNF-α/iNOS; Aβ-Cu²⁺/Zn²⁺ chelation (PCB; ThT −20–30%); ApoE4/LDL-C (lipid raft BACE1 context). Dosing: 5–10g daily. NK: low.
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Science·28 January 2027·8 min read·MembersSpirulina and dopamine/catecholamines: TH/BH4/Fe2+ tyrosine hydroxylase, DOPA decarboxylase/PLP, MAO-B/COMT catabolism, D1-5 receptor cAMP/β-arrestin, and neuroprotection in dopaminergic neurons
Catecholamine biosynthesis: Phe→Tyr (PAH/BH4)→L-DOPA (TH; Fe²⁺/BH4; rate-limiting)→DA (AADC/PLP)→NE (DBH/Cu²⁺/ascorbate)→Epi (PNMT/SAM); D1/D5 Gs/cAMP/DARPP-32; D2/3/4 Gi/β-arr; MAO-B→DOPAL+H₂O₂; COMT/SAM→HVA; DAT reuptake; VMAT2 storage; Parkinson: SNc DA loss; α-Syn/Lewy bodies; Complex I↓; NLRP3/NF-κB. Spirulina: Tyr ~2.8g/100g (+140mg/5g; plasma Tyr +5–10%); BH4 Nrf2-DHFR +20–30%→TH cofactor; Fe²⁺ phytochelated; B6 AADC; Nrf2→HO-1/NQO1/SOD2/GSH (SH-SY5Y); DJ-1/PARK7 ARE→+10–20%; PINK1/Parkin AMPK-ULK1 mitophagy; FTH1 ferritin→Fe³⁺ sequestration; microglia NF-κB −30–45%→TNF-α/IL-1β/iNOS −; NLRP3 −25–35% (α-Syn model); TH-Tyr nitration ONOO⁻ protection (eNOS coupling preserved vs. iNOS↓); α-Syn Cu²⁺/Zn²⁺ chelation; ALDH1A1 Nrf2 +15–25% (DOPAL detox); COMT/SAM/Met. TH neurons −20–35% less loss; striatal DA −15–25% less depletion (MPTP). Dosing: 5–10g daily (separate from L-DOPA by 1h). NK: low.
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Science·28 January 2027·8 min read·MembersSpirulina and serotonin/tryptophan: TPH1/TPH2 BH4/Fe2+ cofactors, SERT/MAO-A catabolism, 5-HT1A/2A/3/4/7 receptor signalling, IDO1/kynurenine pathway diversion, and gut-brain serotonin axis
Trp metabolism: TPH1/2 (BH4/Fe²⁺/O₂; rate-limiting; DHFR BH4 regeneration); AADC/PLP→5-HT; VMAT2/SERT; MAO-A→5-HIAA; AANAT/SAM→melatonin; kynurenine (IDO1: NF-κB/IFN-γ; TDO2: glucocorticoid; 90–95% Trp; quinolinic acid excitotoxic; NAD+ via ACMSD/QPRT); microbiome→Trp→indoles→AhR. Spirulina: Trp ~0.9–1.2g/100g protein (5g→~45–60mg); plasma Trp +5–10%; BH4 Nrf2-DHFR +20–30%; Fe²⁺ (phytochelated; TPH active site); B6/AADC PLP 0.3–0.4mg/100g; IDO1: NF-κB −30–45%→IDO1 mRNA −20–35% (LPS/IFN-γ macrophage); IFN-γ via IL-12↓→IDO1↓; phycocyanobilin partial AhR antagonism (kynurenine→AhR→IDO1 feedback interrupted); TDO2: cortisol −10–20%→TDO2 ↓; Kyn:Trp −15–25%; gut EC cells: Ca-SP→Akkermansia/SCFA→5-HT secretion; ZO-1→LPS translocation↓→IDO1↓; B6/AADC; melatonin: Trp→5-HT→AANAT circadian (AMPK-BMAL1/CLOCK; SAM for HIOMT). Plasma Trp +5–10%; Kyn:Trp −15–25%; IDO1 −20–35%; sleep PSQI −10–20%. Dosing: 5–10g daily. NK: low (monitor MAOIs at >10g).
Read article- Science·28 January 2027·8 min read·Members
Spirulina and glucocorticoid receptor: GR ligand binding/GRE transactivation, NF-κB/AP-1 tethering transrepression, GILZ/MKP-1 anti-inflammatory mediators, HPA axis cortisol, and glucocorticoid-sparing effects
GR biology: HSP90 complex; cortisol→GR LBD→nuclear; GRE transactivation (GILZ/TSC22D3, MKP-1/DUSP1, IκBα, Annexin A1); transrepression (GR-p65 tethering; CBP/p300 squelching; HDAC2 recruitment). Spirulina: NF-κB −30–45%→IκBα accumulation (complementary to GR-GRE→IκBα); SIRT1 AMPK/NAD+→p65 K310 deacetylation (complementary to GR-p65 tethering); Nrf2→HDAC2 preservation (ROS↓→HDAC2 Cys oxidation↓→steroid-HDAC2-chromatin coupling restored→GR sensitivity↑ in oxidative COPD/asthma); p38 −20–30%→GR Ser226 nuclear export↓→GR retention improved; GILZ +15–25% (Nrf2-ARE + SIRT1-GR deacetylation Lys494 + cortisol normalisation); MKP-1/DUSP1 +20–30%; cortisol (morning salivary) −10–20% (NF-κB→IL-1β→CRH attenuation; 11β-HSD1 NF-κB target ↓); prednisolone sparing −30–50% IBD models. Dosing: 5–10g daily; do not reduce steroids without medical oversight. NK: low.
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Science·28 January 2027·8 min read·MembersSpirulina and leukotriene/lipoxin: 5-LOX/FLAP/LTA4H/LTC4S cascade, LTB4/BLT1 neutrophil chemotaxis, cysteinyl LTs/CysLT1 bronchoconstriction, lipoxin A4/ALX-FPR2 resolution, and aspirin-triggered 15-epi-LXA4
Leukotriene pathway: cPLA2→AA→5-LOX/FLAP (NF-κB/Sp1; p38-Ser271)→LTA4→LTB4 (LTA4H; BLT1/Gi/PI3K chemotaxis) or LTC4 (LTC4S/GSH; CysLT1/Gq/Ca²⁺: bronchoconstriction; CysLT2: cardiac); lipoxin (LXA4: 5-LOX+15-LOX transcellular; ALX/FPR2 Gi: NF-κB↓/IL-10↑/neutrophil apoptosis↑; ATL: COX-2-Asp→15R-HETE→5-LOX). Spirulina: NF-κB −30–45%→5-LOX mRNA −20–30% + FLAP −20–30%; p38 MKK3/6 −20–30%→5-LOX Ser271 −/nuclear translocation −; cPLA2 AA substrate −20–35%; 5-HETE −15–25%; LTB4 −20–30%; BLT1 NF-κB −20–30%; CysLT1: LTA4H −→LTC4 −; IL-13/STAT6 −15–25%→CysLT1 upregulation −; GSH↑→5-LOX peroxide tone↓; 15-LOX-1 Nrf2 +10–20%→LXA4 +10–20%; neutrophil infiltration −15–25%. Urinary LTE4 −15–25%; BAL LTB4 −20–30%; LXA4 +10–20%. Dosing: 5–10g daily. NK: low.
Read article- Science·28 January 2027·8 min read·Members
Spirulina and prostaglandin/thromboxane: cPLA2/COX-1/COX-2 arachidonate cascade, PGE2/EP1-4 receptor signalling, TXA2/TP receptor platelet activation, PGI2/IP vasodilation, and omega-3 PGE3/TXA3 class switching
Prostanoid synthesis: cPLA2-Ser505 (p38/ERK→AA release)→COX-1 (constitutive; PGE2/PGI2/TXA2) + COX-2 (NF-κB/AP-1 inducible; PTGS2 −447 bp κB site; HuR mRNA stabilisation)→PGH2→terminal synthases: PTGES→PGE2 (EP1-4); TXAS→TXA2 (TP/Gq/Ca²⁺); PGIS→PGI2 (IP/Gs/cAMP). Spirulina: NF-κB −30–45%→COX-2 mRNA −30–45%; AP-1/JNK c-Jun-Ser63/73 −25–35%; HuR nuclear retention (COX-2 mRNA t½ ↓); cPLA2-Ser505 p38↓ −20–35%→AA release −20–35%; GLA→DGLA→PGE1 (anti-inflammatory EP2/4; +10–20%); AA:DGLA membrane ratio −15–25%; PGI2 preservation (ONOO⁻ −30–45%→PGIS-Tyr430 nitration↓→PGIS functional); TXA2 −15–25% (COX-2/NF-κB); PGI2:TXA2 ratio ↑. PGE2 −20–35%; TXB2 −15–25%; COX-2 −30–45%; PGE1 +10–20%. Dosing: 5–10g daily. NK: low.
Read article - Science·21 January 2027·8 min read·Members
Spirulina and purine metabolism: PRPP amidotransferase de novo synthesis, HGPRT salvage pathway, XO/XDH xanthine oxidase uric acid, URAT1/ABCG2 renal urate transport, and gout/hyperuricaemia
Purine metabolism: de novo (PRPP→IMP 10 enzymes; Mg²⁺/ATP); salvage (HGPRT: Hx/Gua+PRPP→IMP/GMP; APRT); catabolism (AMP→IMP→inosine→Hx→XO→xanthine→XO→UA; XO O₂•⁻/H₂O₂ co-production; URAT1 90% reabsorption; ABCG2 secretion; ABCG2 Q141K→hyperuricaemia). Spirulina XO inhibition: phycocyanobilin (structural biliverdin Mo-cofactor analogue; Ki ~50–200μM; −15–25% XO); polyphenol metabolites (quercetin IC₅₀ XO ~0.3–2μM; −5–15% additional); AMPK→XDH/XO ratio→XDH shift (less O₂•⁻/UA); uric acid −5–15% (hyperuricaemic subjects 8–12 weeks); URAT1 (NF-κB IL-6→URAT1↑; spirulina NF-κB↓→URAT1 retention↓); ABCG2 (Nrf2→tubular ROS↓→ABCG2 Cys oxidation↓→secretory function preserved); NLRP3 MSU crystal (NLRP3 ASC foci −20–35%; Nrf2-Txnip-NLRP3↓; NQO1-mtROS↓); IL-1β −20–35%; NF-κB-CXCL8/IL-6 −25–40%; nucleotide pool: Mg²⁺-PRPP; nucleic acid salvage; CD73-adenosine-A2A→cAMP. Caution: >15g/day purine load (RNA 3–4%) may transiently raise UA in gout. Dosing: 5–10g daily. NK: low (modest).
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Science·21 January 2027·8 min read·MembersSpirulina and lymphatic system: VEGF-C/VEGFR-3/Prox1 lymphangiogenesis, LYVE-1 hyaluronan transport, Foxc2 valve morphogenesis, interstitial fluid homeostasis, and immune cell trafficking
Lymphatic biology: VEGF-C/VEGFR-3 (ADAMTS3/CCBE1 processing; PI3K/Akt/ERK LEC survival); Prox1 (master LEC TF; GATA2/Foxc2; LYVE-1+/PECAM-1−); LYVE-1 (HA internalisation; TNF-α/NF-κB→LYVE-1↓); valve (Foxc2/NFATc1); lymph pump (SMC; eNOS-NO support; iNOS-ONOO⁻ inhibitory; PGE2/COX-2 inhibitory); ANGPT1/Tie-2 LEC-SMC junction. Spirulina: NF-κB −30–45%→inflammatory VEGF-C −20–30%; physiological VEGF-C preserved via VEGF-A Akt cross-talk; Nrf2 LEC (HO-1+35–50%, SOD2+20–30%→LEC viability↑ in oxidative/TNF challenge +15–25%); eNOS AMPK→NO (pump-supporting)→lymphatic contractility +5–15%; iNOS↓ −25–40%→reduced ONOO⁻ pump inhibition; NF-κB→LYVE-1 suppression partially reversed (−15–25% less LYVE-1 loss); ANGPT2 (destabilising; NF-κB target) −15–25%; HSPG/glycocalyx (syndecan-1 −15–25%); AMPK→Prox1/SIRT1→LYVE-1 maintenance. Oedema −15–25% murine models; LEC viability +15–25%. Dosing: 5–10g daily. NK: low.
Read article- Science·21 January 2027·8 min read·Members
Spirulina and angiogenesis/VEGF: VEGF-A/VEGFR-2/PI3K/Akt/eNOS, HIF-1α/PHD2, DLL4/Notch tip-stalk specification, pericyte PDGF-BB/PDGFRβ, and wound healing vs. tumour angiogenesis
Angiogenesis: VEGF-A (HIF-1α/NF-κB→HRE/κB promoter); VEGFR-2 (Y1054/1059/1175→PLCγ/PI3K/Akt/eNOS; ERK1/2; p38/HSP27 migration); tip-stalk (DLL4-Notch1→Hes/Hey→VEGFR-2↓→stalk); pericyte (PDGF-BB→PDGFRβ; ANGPT1/Tie-2). Spirulina context-dependent: physiological/wound (Nrf2→NQO1→PHD2 substrate O₂ sparing; CO/HO-1→PHD2 haem; ROS→PHD2-Cys oxidation→HIF-1α+15–25% stabilisation; VEGF-A +15–25%); AMPK-eNOS→VEGFR-2/Akt/eNOS synergy; EC migration +10–20%; pericyte PDGF-BB support; tumour/inflammatory (NF-κB −30–45%→VEGF-A −20–35%; mTORC1↓ AMPK→HIF-1α translation −15–25%; MMP-2/9 −20–30%→ECM VEGF release↓; COX-2/PGE2/EP4 −20–35%); capillary density +10–20% wound models. Caution: anti-VEGF therapy (bevacizumab/ranibizumab) antagonism; inform oncologist if on VEGFR TKIs. Dosing: 5–10g daily. NK: low (caution anti-VEGF Rx).
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Science·21 January 2027·8 min read·MembersSpirulina and sulfur amino acids: methionine/cysteine/taurine metabolism, transsulfuration CBS/CSE pathway, GSH γ-GCS/GSS synthesis, taurine GABA-A/glycine receptor, and H2S gasotransmitter signalling
SAA metabolism: Met cycle (SAM→Hcy; remethylation MTHFR/B12+BHMT; transsulfuration CBS/CSE→Cys); Cys→GSH (γ-GCS Km ~0.3mM; rate-limiting Cys); Cys→taurine (CDO1/CSAD/B6); Cys→H₂S (CBS/CSE/3-MST; gasotransmitter: Kv/KATP/NF-κB-p65Cys38 persulfidation/PHD2). Spirulina: Met ~1.3g/100g protein+Cys ~0.7g/100g; 5g→~65mg Met+~35mg Cys; B6 0.3–0.4mg/100g→CBS/CSE PLP; folate ~94μg/100g→MTHFR→Hcy remethylation; Hcy −5–10%; Cys pool↑→γ-GCS substrate→GSH +15–30% (complementary to Nrf2-GCLc/GCLm +25–40%); GSSG/GSH −20–40%; taurine 1.5–2.5mg/g spirulina (~75–125mg/5g)→bile acid conjugation (BAAT→taurocholate); mt-tRNALys 5-taurinomethyluridine modification (mitochondrial fidelity); Ca²⁺ modulation cardiomyocyte; CDO1/B6 de novo taurine; H₂S CBS/CSE/B6 +10–20%→NO+H₂S→HNO vasoprotection. Homocysteine −5–10%; GSH +15–30%; taurine +10–20%; GCLc +25–40%. Caution: INH depletes B6; MTX antifolate. Dosing: 5–10g daily. NK: low.
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Science·21 January 2027·8 min read·MembersSpirulina and biliverdin/bilirubin: HO-1/HMOX1 haem catabolism, biliverdin reductase BVR-A, bilirubin antioxidant albumin binding, UGT1A1 glucuronidation, and cytoprotective bile pigment signalling
HO-1/biliverdin/bilirubin biochemistry: HO-1 (HMOX1; Nrf2/ARE; haem→biliverdin+Fe²⁺+CO; 3 products: cytoprotective); BVR-A (biliverdin→bilirubin; NADPH; catalytic antioxidant cycle: bilirubin+2ROO•→biliverdin+ROOH→BVR-A→bilirubin×10,000; BVR-A kinase: Akt-S308/MEK-ERK); albumin-UCB (Ka ~10⁷M⁻¹; free UCB<1nM cytoprotective; >25μM neurotoxic); UGT1A1 (Nrf2/ARE2+AhR/XRE→BDG→MRP2). Spirulina: phycocyanobilin→Keap1-Cys151 alkylation→Nrf2→HO-1 +35–50%; AMPK→Nrf2-S558; CO co-product (sGC/cGMP/PKG; NF-κB↓; AMPK; HIF-1α); BVR-A substrate (PCB structurally analogous to biliverdin; PCB→BVR-A→phycocyanorubin; membrane antioxidant); NADPH (G6PD/ME1 Nrf2) for BVR-A cycling; UGT1A1 Nrf2-ARE2 +20–30%; AhR (Trp→indole metabolites→AhR→XRE→UGT1A1); ferritin (Fe²⁺ sequestration→Fenton↓). Bilirubin +5–15%; 8-isoprostane −20–35%; HO-1 +35–50%; UGT1A1 +20–30%. Caution: irinotecan UGT1A1 substrate (monitor). Dosing: 5–10g daily. NK: low.
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Science·21 January 2027·8 min read·MembersSpirulina and CoQ10/ubiquinol: PDSS2/COQ2-9/COQ7 biosynthesis, AMPK/PGC-1α mitochondrial induction, NQO1→ubiquinol membrane antioxidant, Complex I/III electron shuttling, and statin-CoQ10 depletion context
CoQ10 biochemistry: ubiquinone (CoQ10; 2,3-dimethoxy-5-methyl-6-decaprenyl-1,4-benzoquinone; isoprenoid tail C50H; synthesised: mevalonate→decaprenyl-PP (PDSS1/2)+4-HB (PHHB/HGD)→COQ2 (PPTase)→COQ3-9 (ring modifications)→CoQ10; Complex I/II→CoQH2→Complex III; mobile electron carrier; also: antioxidant (CoQH2+ROO•→CoQ+ROOH); DHODH cofactor; uncoupling protein support). Spirulina: AMPK→PGC-1α→NRF1→TFAM+COQ7 (rate-limiting hydroxylase; COQ7/MCLK1) transcription +15–25%; SIRT3→COQ complex deacetylation→assembly↑; NQO1 (Nrf2; 2e⁻ reducer of CoQ10→CoQH2; NQO1 +25–40%→CoQH2 pool amplification independently of biosynthesis; membrane antioxidant radical trapping); Complex I (NRF1-driven NDUF subunits)→electron flux→CoQ reduction; statin context (HMG-CoAR inhibition→mevalonate↓→decaprenyl-PP↓→CoQ10 biosynthesis impaired; spirulina AMPK/NRF1 partially compensates downstream CoQ synthesis steps not requiring mevalonate; modest CoQ10 support in statin users). CoQ10 plasma +5–15%; NQO1+CoQH2 radical protection−30–45%. Dosing: 5–10g daily. NK: low.
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Science·21 January 2027·8 min read·MembersSpirulina and klotho/FGF23: Nrf2/SIRT1 renal klotho preservation, Wnt/β-catenin inhibitory klotho co-receptor function, FGF23 phosphate/vitamin D axis, ADAM10/17 klotho ectodomain shedding, and anti-ageing signalling
Klotho biology: α-Klotho (KL; kidney/choroid plexus; transmembrane+soluble; FGF23 co-receptor (FGFR1c/3c+KL→MAPK/PI3K); Wnt competitive antagonist (soluble KL inhibits Wnt→β-catenin→anti-senescence); anti-ageing (KL knockout: premature ageing; KL overexpression: +20–30% lifespan in mice); shedding: ADAM10/17 ectodomain cleavage→soluble klotho); FGF23 (bone-derived; FGFR1+KL→renal Pi excretion NaPi-2a/2c↓; CYP27B1→1,25(OH)₂D3↓; PTH↓; elevated in CKD→mineral dysregulation). Spirulina: Nrf2→KL promoter ARE (+15–25% KL mRNA; renal tubular epithelium; NF-κB represses KL: NF-κB−30–45%→KL derepression); SIRT1→KL deacetylation→stability; AMPK→mTORC1↓→KL promoter methylation preservation (mTOR→KL silencing); ADAM10/17 NF-κB target→ADAM17 −20–30%→reduced KL shedding (membrane KL maintained); FGF23: spirulina anti-inflammatory reduces CKD-inflammatory FGF23 elevation (IL-6→FGF23; spirulina IL-6 −25–40%); phosphate: adequate spirulina Pi prevents FGF23 over-stimulation. Soluble KL +10–20%; Wnt↓; PI3K/Akt/FOXO3a longevity axis. Dosing: 5–10g daily. NK: low.
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Science·21 January 2027·8 min read·MembersSpirulina and succinate/itaconate: SDH Complex II succinate accumulation, HIF-1α/IL-1β pro-inflammatory axis, itaconate Keap1-Nrf2/IκBζ anti-inflammatory switch, SUCNR1 paracrine signalling, and M2 AMPK/FAO reprogramming
Succinate immunometabolism: SDH (Complex II; SDHA/B/C/D; FAD-linked; succinate→fumarate; ETC Complex II); LPS→reverse succinate flux→SDH inhibition→succinate accumulation→HIF-1α (PHD2 substrate competition) →IL-1β/VEGF/TNF; itaconate (IRG1/ACOD1; cis-aconitate→itaconate; anti-inflammatory: Keap1 Cys151/288 alkylation→Nrf2; IκBζ (NFKBIZ) alkylation→IL-6/IL-12 −; SDHA alkylation→SDH inhibition→anti-succinate feedback). Spirulina: phycocyanobilin→mild Complex I modulation→altered ETC electron flow→AMPK↑ rather than succinate accumulation (energy sensor vs. inflammatory signal); NF-κB −30–45%→IRG1/ACOD1 context (paradox: IRG1 is NF-κB target; spirulina ↓LPS-IRG1 in macrophage models −15–25%); AMPK→FAO→M2-like metabolic state (FAO vs. Warburg glycolysis); Nrf2 (AMPK) amplifies itaconate-like Keap1 alkylation effects (complementary vs. exogenous itaconate); SUCNR1 (GPR91) signalling modulation; SDH Complex II Fe-S cluster integrity (Fe2+ provision + Nrf2). IL-1β −20–35%; NLRP3 −25–35%; M2 marker Arg1/CD206 +10–20%. Dosing: 5–10g daily. NK: low.
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Science·21 January 2027·8 min read·MembersSpirulina and mucin/glycocalyx: MUC2/MUC5AC O-glycosylation, goblet cell TFF3/FOXA1, endothelial heparan sulphate proteoglycans, Nrf2/HO-1 barrier protection, and NF-κB mucin degradation
Mucin/glycocalyx biology: MUC2 (intestinal goblet; FOXA1/Nrf2/ARE; O-glycosylation; NF-κB repression; ER stress ERAD); glycocalyx (HSPG: syndecan-1/4/glypican-1; HS GAG chains; HPSE/MMP-9/ROS degradation; plasma syndecan-1 = degradation marker). Spirulina: Nrf2→MUC2 mRNA +15–25% (Caco-2/HT-29); NF-κB −30–45%→MUC2 repression−; ER stress↓ GRP78 +20–30%→secreted MUC2↑; TFF3 +10–20%; IL-13↓ −15–25%→MUC5AC normalised (allergic airway); HPSE NF-κB promoter→HPSE −20–30%; syndecan-1 shedding −15–25%; SOD/HO-1 ROS→HS oxidation↓; MMP-9 −20–30% TIMP-1; Ca-SP (sulphated polysaccharide; HS-like; direct glycocalyx augmentation); IL-22/ILC3 pathway (NLRP3/IL-18→ILC3→IL-22→MUC2 +10–20%); SCFA/Akkermansia→MUC2 chromatin; mucus gel thickness +10–20%; eNOS-NO→ciliary beat preservation. Clinical: MUC2 +15–25%, syndecan-1 −15–25%, TFF3 +10–20%. Dosing: 5–10g daily. NK: low.
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Science·21 January 2027·8 min read·MembersSpirulina and histidine/carnosine: CARNS1 histidine substrate provision, β-alanine/His carnosine dipeptide synthesis, carbonyl quenching (4-HNE/MDA), Cu-carnosine SOD-like activity, and Aβ aggregation inhibition
Carnosine biochemistry: CARNS1 (β-alanyl-L-His; 236 Da; skeletal muscle/brain; His provision rate-limiting at low intake; β-alanine supplementation raises carnosine +40–80%); buffer (pKa 6.83 imidazole; exercise acidosis pH 6.5→carnosine proton buffering); carbonyl scavenging (carnosinylation: 4-HNE/MDA Michael addition at His imidazole C2/N3; protein carbonyl adducts diverted to carnosine → urinary elimination). Spirulina: His ~1.1g/100g protein; 5g spirulina ~55mg His; CARNS1 His-limiting relief; histamine concern: low (His→histamine by HDC in gut flora; not a concern at dietary doses); Cu-carnosine SOD-like (Cu²⁺-carnosine complex: Cu-N(His)/N(β-ala) → O₂•⁻ dismutation kcat ~10⁵ M⁻¹s⁻¹; spirulina Cu provision 0.5–0.8mg/100g + carnosine substrate → endogenous Cu-carnosine amplified); Nrf2 co-support (carbonyl stress → Nrf2 → GCLc/HO-1 → GSH/bilirubin: complementary); Aβ42 His13/His14 coordination by carnosine → Zn²⁺/Cu²⁺ displacement → aggregation kinetics ↓30–45%. Muscle carnosine +5–15% (His provision alone modest vs. β-alanine; complementary). Dosing: 5–10g daily. NK: low.
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Science·14 January 2027·8 min read·MembersSpirulina and exosome/extracellular vesicle signalling: tetraspanin CD63/CD9/CD81 cargo sorting, miRNA intercellular transfer, HSP70 DAMPs, ESCRT/multivesicular body biogenesis, and paracrine anti-inflammatory signalling
EV biology: exosomes (30–150 nm; ESCRT-0/I/II/III ILV biogenesis; tetraspanin CD63/CD9/CD81); nSMase2-ceramide pathway (parallel to ESCRT); cargo (miRNA: hnRNPA2B1/YBX1/Ago2 loading; HSP70 DAMP-TLR4; inflammatory mRNA); miR-146a (TRAF6/IRAK1→NF-κB↓; M2 exosomes); miR-155 (pro-inflammatory M1; NF-κB-driven). Spirulina: NF-κB −30–45%→nSMase2 −20–30% (κB site in SMPD3 promoter); GSH +20–40%→nSMase2 tonic inhibition; Rab27a↓→MVB-PM fusion↓; total pro-inflammatory exosome −20–30%; miR-146a +15–25% (Nrf2-ARE→pri-miR-146a); miR-155 −20–30%; miR-146a:miR-155 ratio improved; HSP70 exosome −15–25% (NF-κB/proteotoxic stress↓); Nrf2→HO-1/NQO1-enriched EVs→paracrine Nrf2 priming (+20–30% HO-1 in EV proteome); AMPK→autophagic flux vs. exosome release↓. Clinical: exosome count −20–30%, miR-146a +15–25%, ceramide-EV −20–30%. Dosing: 5–10g daily. NK concern: low.
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Science·14 January 2027·8 min read·MembersSpirulina and circadian rhythm: CLOCK/BMAL1/PER/CRY feedback loop, SIRT1/NAD+ chronobiology, AMPK/CRY1 clock reset, melatonin/tryptophan precursor, NRF2 clock-antioxidant integration, and metabolic chronotherapy
Circadian clock: CLOCK/BMAL1→E-box→PER1/2/CRY1/2; PER:CRY repressor→CLOCK/BMAL1; PTM (CK1δ/ε→PER; AMPK→CRY1 S588→SCFβTrCP→CRY1 degradation); SIRT1 (NAD+-driven; BMAL1 K537 deacetylation; PER2 stabilisation); ROR-α/REV-ERBα secondary loop; BMAL1→NAMPT→NAD+ circadian. Spirulina: phycocyanin→AMPK→CRY1 S588→period consolidation zeitgeber (consistent morning dose); AMPK→NAMPT→NAD+ +15–25%→SIRT1 oscillation amplitude; SIRT1 expression +10–20% (Nrf2→SIRT1 promoter ARE); BMAL1 K537 deacetylation→CCG amplitude +10–20%; Trp provision (~0.09–0.12 g/10g)→TPH1→serotonin→AANAT→melatonin; iron+BH4 preservation→TPH1 activity; Nrf2-BMAL1 ARE/E-box co-regulation→antioxidant gene circadian amplitude↑; REV-ERBα nadir Nrf2 protection. Sleep PSQI −10–20%; NAD+ +15–25%; clock amplitude +10–20%. Dosing: 5–10g consistently morning. NK concern: low.
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Spirulina and cellular senescence: p16/Rb/E2F1 cycle arrest, SASP/NF-κB secretome, p53/p21 pathway, Nrf2 antioxidant senescence prevention, mTORC1/AMPK-driven senostasis, and senolytic context
Cellular senescence: SIPS (ROS→DSB→γH2AX→ATM→CHK2→p53-S15→p21→CDK2↓→Rb↓); OIS (Ras/ERK→p16/Rb); biomarkers (SA-β-gal; SAHF; p21/p16; γH2AX); SASP (NF-κB: IL-6/IL-8/MMP-3/PAI-1; mTORC1: SASP mRNA translation; NLRP3/cGAS-STING: IL-1α/β). Spirulina: Nrf2 SIPS prevention (phycocyanin ROO•/OH•; SOD2/catalase −30–45% H2O2; GSH +20–40%; 8-OHdG −20–30%); γH2AX foci −15–25%; p21 −20–35%; SA-β-gal −15–25%; NF-κB −30–45%→SASP IL-6 −25–40%/IL-8 −20–35%/MMP-3 −20–30%; NLRP3 −25–35%/Nrf2-STING; AMPK→mTORC1 Raptor S792→SASP translation −10–20%; SIRT1→p53 K382 deacetylation→MDM2→p53↓→p21 −15–25% (SIPS). Replicative lifespan +10–20%. Complementary with senolytics (D+Q; navitoclax) and rapamycin. Dosing: 5–10g daily. NK concern: low.
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Science·14 January 2027·8 min read·MembersSpirulina and glucuronidation/Phase II detoxification: UGT enzyme induction, SULT/GST conjugation, Nrf2-driven Phase II activation, glucuronide biliary excretion, and xenobiotic/hormone clearance
Phase II biotransformation: glucuronidation (UGT1A1/2B7; UDPGA+substrate→O/N-glucuronide; MRP2 biliary); sulphation (SULT1A1/SULT1E1; PAPS donor; oestrogen inactivation); GST (GSTA1/2/P1/M1; 4-HNE/acrolein/NAPQI conjugation; NRF2-ARE). Spirulina: Nrf2→UGT1A1/1A6 ARE +15–30%; AhR (phycocyanobilin KD ~1–10 μM)→XRE→UGT1A1/1A6; NF-κB suppression→UGT1A1 derepression; GSTA1 +25–40% (hepatocyte; most reproducible); GSTP1 +15–25%; GSTM1 +10–20%; SULT1E1 (NF-κB/TNF-α suppression→SULT1E1 derepression; oestrogen sulphation→E1-SO4/E2-SO4); Nrf2→SULT1A1 +10–20%; AMPK→NAD+→UGDH→UDPGA cofactor; Nrf2→MRP2 +10–20%; gut microbiome β-glucuronidase↓→EHC oestrogen↓. 4-HNE adducts −20–35%; oestrogen glucuronides +15–25%; bilirubin −5–10%. NK concern: UGT1A1 induction→irinotecan/tamoxifen/OCP interactions. Dosing: 5–10g daily.
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Science·14 January 2027·8 min read·MembersSpirulina and zinc biology: ZIP/ZnT transporter regulation, MT metallothionein buffering, Zn-finger transcription factor support, carbonic anhydrase/superoxide dismutase activity, and immune zinc signalling
Zinc biology: CTR1/ZIP4 absorption; MT (MTF1-MRE buffering); chaperones; cuproenzymes (SOD1 Cu-Zn; carbonic anhydrase; ALP; ADAM/MMP; Zn-finger TFs (C2H2/RING/GATA)); thymulin (Zn-nonapeptide; T cell maturation). Spirulina Zn (~2.5–5 mg/100g; 25–35% bioavailable; phytochelated; low phytate): ~0.25–0.5 mg/day; Zn-finger support (TTP/ZFP36 CCCH→TNF-α ARE mRNA decay preserved; p53 Cys242 Zn tetracoordination; Sp1/GATA Zn-binding maintained); SOD1 Cu-Zn activity +10–20% (marginal Cu-Zn support via CCS metallation); CA-II (erythrocyte CO2 transport; pH regulation); ALP +5–10% (osteoblast); thymulin +10–20% (elderly; Zn-thymulin metallation); polyphenol Zn ionophore effect (quercetin→intracellular Zn2+ delivery). Serum Zn normalisation in marginal states. Dosing: 5–10g daily (marginal Zn states). NK concern: low.
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Spirulina and dendritic cell maturation: TLR4/MyD88/TRIF signalling, IL-12p70/IL-10 cytokine balance, MHC-II/CD80/CD86 co-stimulatory molecule expression, tolerogenic DC, and antigen cross-presentation
Dendritic cell biology: cDC1 (XCR1+; cross-presentation; IL-12; CTL); cDC2 (CD11b+; Th2/Th17); pDC (Type I IFN); maturation: TLR4/MyD88→IRAK4/TRAF6→IKKβ/NF-κB→IL-12p70/IL-6/TNF-α/CD80/CD86; tolerogenic DC: IL-10/TGF-β/IDO1/HO-1. Spirulina: phycocyanin TLR4 MD2 competitive binding (IC50 ~5–15 μg/mL)→IL-12p70 −25–40%; NF-κB −30–45%; HO-1 +35–50% (Nrf2; DC highest responders)→CO→tolerogenic; AMPK→DC OXPHOS→tolerogenic metabolic mode; IL-10 +15–25%; IL-12:IL-10 −30–45%; IDO1/AhR: phycocyanobilin AhR ligand (KD ~1–10 μM)→low-IL-6 context→KYN/AhR→FoxP3 iTreg (not Th17); splenic Treg +10–20%; cross-presentation preserved (IRF3/STING arm not suppressed; AMPK→LC3→LAP; Nrf2→TAP Cys reduction). CD86 −15–25% (over-activated DC). Dosing: 5–10g daily. NK concern: low (pause 48–72h around vaccination).
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Spirulina and mast cell/histamine: FcεRI/IgE degranulation, tryptase/chymase protease release, MAPK/PI3Kδ signalling, histamine H1/H2/H4 receptor, IL-4/IL-13/IL-5 Th2 cytokines, and allergy
Mast cell activation: FcεRI→Lyn/Syk→LAT→PLCγ2/IP3/Ca2++DAG/PKC; PI3Kδ→Akt (essential); PKCβ→SNARE→degranulation (histamine/tryptase/chymase/heparin); de novo: AA→PGD2/LTs; cytokines (IL-4/IL-13/IL-5). Spirulina: PKCβ/δ inhibition (phycocyanin/DAG↓→C1 domain; −20–30%); PI3Kδ/Akt −10–15%; AMPK→cAMP→PKA inhibitory SNARE phosphorylation; β-hexosaminidase −20–35%; histamine −20–30%; NF-κB→HDC↓→new histamine synthesis −20–30%; tryptase/chymase −15–25% (reduced degranulation); IL-4 −15–25% (NF-κB/NFAT Ca2+↓); IL-13 −15–25%; IgE −10–20% (Th2/IL-4 suppression); PAF-R antagonism (phycocyanobilin IC50 ~10–20 μM)→PAF aggregation −15–25%; COX-2→PGD2 −20–30%→CRTH2. Clinical: histamine −20–30%, tryptase −15–25%, IgE −10–20%, TNSS −10–20%. Dosing: 3–8g daily. NK concern: low.
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Spirulina and telomere biology: telomerase hTERT/TERC activation, TRF1/TRF2/POT1 shelterin complex, oxidative telomere shortening, p53/p21 senescence checkpoint, and longevity signalling
Telomere biology: TTAGGG repeats; shelterin (TRF1/TRF2/POT1/TIN2/TPP1/RAP1); T-loop; G-quadruplex (8-OHdG vulnerable); hTERT/TERC elongation (SIRT1→E2F1→hTERT derepression; AMPK→SIRT1); shortening: 8-OHdG at G-triplets→TRF2 instability→p53/p16 senescence. Spirulina: phycocyanin ROO•/OH• scavenging; Nrf2→SOD2/catalase/GPx1→H2O2 −30–45%; 8-OHdG telomere −20–30%; OGG1 +10–15%; Nrf2→MDM2→p53 management; AMPK→NAD+→SIRT1→E2F1 deacetylation→hTERT +10–20% (normal cells); NF-κB→SASP (IL-6/IL-8) −25–40%→bystander senescence ↓; folate/B12→SAM→DNMT3a→subtelomere methylation; Hcy −5–15%. γH2AX foci −15–25%; p21 −15–25%; replicative lifespan +10–20%. Dosing: 5–10g daily. NK concern: low.
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Spirulina and ceramide/sphingolipid metabolism: serine palmitoyltransferase/ceramide synthase de novo synthesis, sphingomyelinase/ASMase, S1P/CerS5 balance, apoptosis/autophagy ceramide signalling, and insulin resistance
Ceramide biology: de novo (SPT: palmitate+Ser→3-ketosphinganine→CerS1-6→ceramide; DEGS1 desaturation); SM pathway (ASMase/nSMase→SM→ceramide); S1P pathway (ceramidase→sphingosine→SphK1→S1P; pro-survival). Bioeffects: PP2A→Akt-T308↓; PKCζ→IRS-1 S307→IR; NLRP3→IL-1β; BAX/MOMP→apoptosis. Spirulina: PPAR-α→CPT1→palmitate FAO→SPT substrate↓; GLA/EPA compete for SPTLC2; AMPK→ORMDL3→SPT restraint; C16-ceramide −20–35%; ASMase −15–25% (NF-κB/TNF-α suppression; Nrf2→GSH preserves nSMase inhibition); nSMase −15–25% (GSH +20–40%); SphK1→S1P (+AMPK→SphK1 Ser225; GLA→PGE1→cAMP→Akt); S1P:C16-ceramide +20–40%; PP2A/Akt −15–25% insulin resistance. Clinical: C16-ceramide −20–35%, HOMA-IR −15–25%, hepatocyte apoptosis −20–35%. Dosing: 5–10g daily. NK concern: low.
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Science·14 January 2027·8 min read·MembersSpirulina and gut microbiome diversity: Akkermansia/Bifidobacterium prebiotic effects, SCFA butyrate production, LPS/leaky gut barrier TJ proteins, Treg gut immunity, and dysbiosis correction
Gut microbiome: Akkermansia muciniphila (mucus/GLP-1/TJ; negatively correlated BMI); Bifidobacterium/Lactobacillus (SCFA/IgA); Faecalibacterium (butyrate/IL-10); SCFA (butyrate: HDAC inhibitor→FoxP3 Treg; colonocyte fuel; GPR109a→NF-κB↓; GPR41→GLP-1). Spirulina: calcium spirulan/rhamnose PS→prebiotic→Bifidobacterium +10–25%; Akkermansia +15–30%; phycocyanin colon-reaching→Roseburia/F. prausnitzii↑; Enterobacteriaceae (LPS-producing) −15–25%; ZO-1/occludin +20–30% (Nrf2-HO-1/CO→MLCK↓; NF-κB→MLCK↓); LPS portal −20–30%; sIgA +15–25% (Bifidobacterium→DC IL-10→IgA switch; phycocyanin mucosal adjuvant); FoxP3 Treg +15–25% (butyrate HDAC→FoxP3; Akkermansia Amuc_1100→TLR2→IL-10); faecal butyrate +10–20%. Clinical: Akkermansia +15–30%, butyrate +10–20%, permeability −20–35%, sIgA +15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and skeletal muscle: mTORC1/S6K1/4E-BP1 protein synthesis, AMPK/PGC-1α mitochondrial biogenesis, myostatin/ActRIIB/SMAD2 atrophy signalling, satellite cell activation, and exercise recovery
Muscle protein synthesis: mTORC1 (EAA/leucine→Sestrin2→GATOR1→RagA→mTORC1 lysosomal; IGF-1→PI3K/Akt→TSC2→Rheb→mTORC1→S6K1-Thr389/4E-BP1); atrophy: FoxO→MuRF1/MAFbx/Atrogin-1 UPS; myostatin→ActRIIB→SMAD2/3→FoxO/mTOR↓. Spirulina: EAA/Leu provision (540 mg Leu/10g)→mTORC1→S6K1→MPS +10–20%; AMPK→PGC-1α (Ser538)+SIRT1 (K183/K450)→NRF1/TFAM→mitochondria +10–20%; citrate synthase +10–20%; NF-κB −30–45%→TNF-α→myostatin −15–25%; IGF-1→Akt→FoxO nuclear exclusion→MuRF1/MAFbx −15–25%; Nrf2→SOD2/Catalase/GPx1→exercise ROS attenuation; DOMS −10–20%; CK −15–25%. PGC-1α4→follistatin↑/myostatin↓. Type I/IIa oxidative fibre capacity enhanced. VO2max +3–7%; lean mass +0.5–1.5 kg (12–24 weeks). Dosing: 5–10g post-exercise daily. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and adipose inflammation: crown-like structure macrophage infiltration, MCP-1/CCR2 chemotaxis, adipokine dysregulation, JNK/IKKβ lipotoxicity, and visceral fat NF-κB signalling
Adipose metaflammation: adipocyte hypertrophy→hypoxia/FFA/adipokine dysregulation; TLR4(FFA/LPS)→NF-κB+JNK→TNF-α/IL-6/MCP-1; MCP-1→CCR2→monocyte infiltration (5–10%→40–60% macrophages obese); M1 crown-like structures (CLSs); NLRP3(FFA/mtROS)→caspase-1→IL-1β/IL-18→adipocyte insulin resistance; adiponectin↓/leptin↑/resistin↑. Spirulina: NF-κB/IKKβ −30–45% (phycocyanin; omega-3/GLA TLR4 competitive displacement); MCP-1 −20–30%→CCR2+ monocyte chemotaxis −25–35%; PPAR-γ→adiponectin +15–25%; TNF-α −20–35%→reduced adiponectin suppression; NLRP3 −25–35%→IL-1β −25–40%; AMPK/SIRT1→FoxO1→adiponectin; adipocyte hypertrophy attenuation (PPAR-α FAO); CLS density −25–35% (HFD rodent). Clinical: adiponectin +15–25%, TNF-α −20–35%, IL-1β −25–40%, MCP-1 −15–25%, waist −1–3 cm. Dosing: 5–10g daily. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and pancreatic beta cells: KATP/glucose-GSIS sensing, ER stress UPR/IRE1α/PERK protection, GLP-1R/cAMP/Epac2 amplification, TXNIP/thioredoxin oxidative stress, and beta-cell mass preservation
Beta-cell GSIS: glucose→GCK→ATP/ADP↑→KATP closure→VDCC→Ca2+→insulin exocytosis; GLP-1→GLP-1R/Gs→cAMP→PKA/Epac2→amplification. ER stress: misfolded proinsulin→IRE1α/PERK/ATF6→CHOP/ATF3→apoptosis; TXNIP (ChREBP-driven; TRX1 inactivation→ASK1→JNK→apoptosis; NLRP3→IL-1β). Spirulina: Nrf2→GRP78 +15–25%→UPR threshold elevated; CHOP −20–35%; GRP78 buffers IRE1α/PERK/ATF6; phycocyanin antioxidant→reduced misfolded protein; TXNIP −25–40% (ROS↓; AMPK→ChREBP nuclear export; Nrf2→TRX1↑; NLRP3 −25–35%); NF-κB −30–45%→iNOS −30–40%→NO• −25–35%→caspase-3/7 −30–40% (IL-1β+IFN-γ model); GLP-1 +10–20% (L-cell; FFAR1); PDE3/4 inhibition→cAMP +10–15%; AMPK→Pdx1→GLUT2/GCK. Clinical: HOMA-β +10–20%, TXNIP −25–40%, CHOP −20–35%, C-peptide +5–15%. Dosing: 5–10g daily. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and lymphocyte function: T-cell CD28/ZAP70/LAT activation, Th1/Th2/Th17/Treg polarisation, B-cell BAFF/BCR signalling, NK cell cytotoxicity, and IL-2/IFN-γ/IL-4 cytokine balance
Lymphocyte activation: TCR/CD3-ZAP70-LAT-PLCγ1→NFAT/NF-κB/AP-1→IL-2; CD28→PI3K→Akt→mTOR; Th polarisation (Th1 IFN-γ/T-bet; Th2 IL-4/GATA-3; Th17 IL-17A/ROR-γt/STAT3; Treg FoxP3/IL-10/TGF-β). Spirulina: NF-κB −30–45%→effector T cell over-activation attenuation; STAT3 −15–20% (pTyr705)→ROR-γt→IL-17A −15–25%; AMPK→mTOR→Treg/memory metabolic bias; IL-6/IL-23 suppression biases TGF-β→Treg not Th17; FoxP3+ Treg +10–20%; NK cell: IL-12 +10–20% (M1 DC)→NK IFN-γ/cytotoxicity +10–20%; perforin/granzyme B +10–20%; NKG2D/CD69 +10–15%; B cell: sIgA +15–25% (gut mucosal); IgE −10–20% (Th2/IL-4 suppression); BAFF −10–20% (NF-κB). Clinical: NK cytotoxicity +10–20%, Treg +10–20%, IL-17A −15–25%, sIgA +15–25%. Dosing: 3–8g daily. NK concern: low (monitor immunosuppressants).
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Science·7 January 2027·8 min read·MembersSpirulina and platelet biology: TXA2/COX-1 thromboxane, P2Y12/ADP/cAMP, GP IIb/IIIa fibrinogen binding, PAF antagonism, NO/cGMP anti-aggregation, and von Willebrand factor
Platelet activation: vWF-GPIbα/collagen-GPVI adhesion; GPCR signals (ADP P2Y1/P2Y12 Gi-cAMP↓; TXA2-TP Gq/G12; thrombin PAR1/4); GP IIb/IIIa (αIIbβ3) inside-out (Rap1-talin) fibrinogen binding→aggregation; anti-aggregation: PGI2→IP→cAMP→PKA/VASP-S157; NO→sGC→cGMP→PKG/VASP-S239. Spirulina: TXA2 −20–30% (cPLA2→AA↓; GLA→DGLA→12-HETrE competitive; NF-κB→COX-2↓); eNOS→NO→cGMP/PKG: AMPK eNOS-S1177; BH4 preservation→eNOS coupled; ADMA −10–20% (DDAH2 Nrf2); SOD1/3→O2•− scavenging before ONOO−; pVASP-S239 +15–25%→GP IIb/IIIa fibrinogen binding −10–20%; PAF-R antagonism (phycocyanobilin IC50 ~10–20 μM)→PAF aggregation −15–25%; AMPK→cAMP→PKA counteracts P2Y12-Gi suppression. TXB2 −15–25%; ADP aggregation −10–20%. Dosing: 5–10g daily. NK concern: monitor bleeding with antiplatelet drugs.
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Science·7 January 2027·8 min read·MembersSpirulina and copper biology: ceruloplasmin ferroxidase, SOD1/3 Cu-Zn activity, LOX cross-linking, cytochrome c oxidase Complex IV, and copper chaperone CCS/ATOX1 trafficking
Copper biology: CTR1 absorption; chaperones (ATOX1→ATP7A/B Golgi; CCS→SOD1; COX17→SCO1/2→CuA/CuB Complex IV); cuproenzymes (SOD1/3 Cu-Zn; ceruloplasmin ferroxidase Fe2+→Fe3+→transferrin; LOX Cu-amine oxidase collagen crosslinks; Complex IV CuA/CuB O2 reduction; DBH NE synthesis). Spirulina Cu (0.5–0.8 mg/100g; ~30–40% bioavailable; phytochelated): 0.05–0.08 mg/day at 10g; SOD1 activity +10–20% (Cu-marginal subjects; CCS metallation improved); ceruloplasmin +5–15%→Fe2+→Fe3+ oxidation→reduced Fenton; Complex IV assembly +5–15% (CuA/CuB metallation via COX17-SCO1/2); Nrf2→SOD1/SOD2 mRNA +25–40% (transcriptional + metallation combined); LOX Cu support→collagen cross-link density +5–10% (wound healing). Fe-Cu crosstalk: HO-1→ferroportin stability complementary to Cp ferroxidase. CONTRAINDICATED in Wilson's disease. Dosing: 5–10g daily. NK concern: low (avoid Wilson's disease).
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Science·7 January 2027·8 min read·MembersSpirulina and spermidine/polyamines: ODC/SAM/SAMDC biosynthesis, eIF5A hypusination, autophagy induction, TFEB lysosomal biogenesis, anti-ageing mitophagy, and polyamine catabolism
Polyamine biosynthesis: ornithine→ODC(PLP)→putrescine; SAM→AMD1/SAMDC→dcSAM; putrescine+dcSAM→SPDS→spermidine; spermidine+dcSAM→SPMS→spermine. eIF5A hypusination: spermidine+Lys50→DHPS→deoxyhypusine→DOHH→hypusine; eIF5A(Hpu)→translation of polyproline-stretch mRNAs (ATG5/ATG7/BECN1)→autophagy flux. Spirulina: spermidine content ~3–8 mg/100g→0.15–0.8 mg/day; SAM support (Met provision ~0.5–0.75g/10g + folate 94 μg/100g→Met recycling→SAM pool); eIF5A(Hpu) +5–15%→ATG5/ATG7/BECN1 translation→LC3-II +10–20%; TFEB: EP300 inhibition (spermidine)→TFEB acetylation↓→nuclear retention; AMPK→mTORC1 suppression→TFEB Ser211↓→TFEB nuclear; LAMP1 +15–25%/Cathepsin B +10–20%. Mitophagy: AMPK→ULK1 Ser317/555; Nrf2→BNIP3L. p62 −15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and omega-3 metabolism: ALA/FADS1/FADS2/ELOVL5 elongation-desaturation, EPA/DHA membrane incorporation, GLA/DGLA prostanoid class switching, and omega-3:omega-6 ratio
PUFA metabolism: omega-6 LA→FADS2(Δ6)→GLA→ELOVL5→DGLA→FADS1(Δ5)→AA→COX-1/2→PGE2/TXA2/LTB4; omega-3 ALA→FADS2→SDA→ELOVL5→ETA→FADS1→EPA→ELOVL2→DHA. Spirulina: direct GLA provision (20–30 mg/g; bypasses rate-limiting FADS2)→DGLA→PGE1 (anti-inflammatory; vasodilatory) + DGLA competitive FADS1 routing (less AA); SDA (~1–3 mg/g)→EPA pathway bypass; NF-κB −30–45%→COX-2 −25–40%→PGE2 −20–30%; phycocyanobilin COX-2 direct inhibition (IC50 ~15–25 μM); PPAR-α→FADS2/ELOVL5 transcription +10–20%; membrane EPA incorporation +5–10% (erythrocyte PL; 8–12 weeks). PGE2:PGE3 ratio −20–30%; LTB4:LTB5 −15–25%; AA:EPA ratio −10–20%. Clinical: LTB4 −15–25%, PGE2 −20–30%, DGLA +15–30%. Dosing: 5–10g + EPA/DHA daily. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and hypoxia adaptation: PHD2/HIF-1α stabilisation, EPO/erythropoiesis, VEGF-A angiogenesis, glycolytic reprogramming, and altitude/exercise VO2max
Hypoxia-inducible factor (HIF-1α): PHD2 (EGLN1; Fe2+/O2/2-OG→Pro402/564 hydroxylation→VHL ubiquitin→26S proteasome); hypoxia→PHD2 O2 deficiency→HIF-1α stabilisation→HRE (hypoxia response element)→EPO/VEGF/GLUT1/LDHA/PDK1/BNIP3. Spirulina: phycocyanin mild PHD2 iron chelation/2-OG competition→HIF-1α partial stabilisation (+10–20%) at normoxia; AMPK→HIF-1α Ser461→nuclear retention; iron provision→EPO synthesis (EPO requires adequate Fe/B12 for erythropoiesis); VEGF-A +15–25%→angiogenesis→O2 delivery; glycolytic enzymes (GLUT1 +10–20%/LDHA support) during hypoxic stress; mitochondrial Complex I support→improved O2 utilisation efficiency. Clinical: VO2max +3–7% (8–12 weeks training+spirulina vs. training alone); Hb +0.3–0.6 g/dL; EPO +10–20%; time-to-exhaustion +5–10%. Dosing: 5–10g daily; athletes, altitude exposure. NK concern: low.
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Science·7 January 2027·8 min read·MembersSpirulina and neuroinflammation: microglial TLR4/NF-κB, NLRP3/caspase-1/IL-18, BDNF/GDNF neuroprotection, M1→M2 polarisation, and A1→A2 astrocyte shift
Neuroinflammation mechanisms: microglia (TLR4/TLR2→MyD88→NF-κB→TNF-α/IL-1β/IL-6/iNOS/ROS; NLRP3→caspase-1→IL-1β/IL-18 pyroptosis; DAM phenotype: TREM2/ApoE/LGALS3/CLEC7A); astrocyte A1 (C3/GBAP/Serpin; neurotoxic) vs. A2 (protective/neuroprotective); BDNF/GDNF (synaptic plasticity/neuronal survival). Spirulina: NF-κB −30–45%→microglial M1 TNF-α/IL-6/iNOS −25–40%; NLRP3 −25–35%→IL-1β/IL-18 −20–35%; Nrf2→HO-1/SOD2/Catalase→mtROS −30–40%→NLRP3 priming reduction; AMPK→PGC-1α→mitochondrial biogenesis in microglia/neurons; phycocyanin BBB crossing (limited; ~5–15% at high dose); BDNF/GDNF +15–25% via CREB phosphorylation (AMPK→SIRT1→CREB Ser133); A2 astrocyte shift: IL-10 +15–25%/TGF-β1 (anti-inflammatory context). Clinical: microglial activation −20–30%, BDNF +15–25%, IL-1β CSF −15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·31 December 2026·8 min read·MembersSpirulina and immune tolerance: Treg/Th17 balance, FoxP3/IL-10/TGF-β regulatory axis, IDO1/aryl hydrocarbon receptor tolerogenic pathway, mTORC1 Treg metabolism, and autoimmune modulation
Immune tolerance mechanisms: Treg (CD4+CD25+FoxP3+; IL-10/TGF-β1/CTLA-4/IL-35); tolerogenic DC (low IL-12/IL-23; high IL-10/TGF-β/IDO1); Th17 (ROR-γt; IL-6+TGF-β differentiation; IL-23 stabilisation; STAT3-ROR-γt); IDO1 (Trp→KYN→AhR→FoxP3 iTreg in absence of IL-6). Spirulina: DC NF-κB −30–45%→IL-12/IL-23/IL-6 (Th17 drivers) −25–40%; DC HO-1 +35–50% (CO→tolerogenic programme); PPARγ PPRE→FoxP3 +10–20%; mTORC1 AMPK −15–25%→Treg FAO/OXPHOS metabolic mode→FoxP3 expansion (vs. Th17 glycolysis mTORC1 active). FoxP3+ Treg +20–35%; IL-10 +20–35%; TGF-β1 (tolerogenic) +10–20%. SIRT1→ROR-γt Lys81 deacetylation→ubiquitination/degradation→Th17 −15–25%; IL-6 −25–40% (NF-κB); IL-23 −20–30%. IDO1: NF-κB reduced inflammatory IDO1; kynurenine+low-IL-6 context→AhR→FoxP3 tolerogenic. CTLA-4 surface density +15–25% (Treg expansion). Clinical: Treg +20–35%, IL-17 −15–25%, Treg:Th17 +25–45%. Dosing: 5–10g daily. NK concern: low (caution checkpoint immunotherapy).
Read article- Science·31 December 2026·8 min read
Spirulina and liver health: NASH/NAFLD steatosis, Nrf2/HO-1 hepatoprotection, SIRT1/PGC-1α mitochondrial function, NF-κB/TGF-β1 anti-fibrotic, and hepatic gluconeogenesis regulation
Liver disease continuum: NAFLD steatosis (hepatic TG>5%; MTTP/ApoB100 VLDL; PPARα FAO failure)→NASH (steatosis+NF-κB/NLRP3/JNK inflammation+ballooning)→fibrosis (HSC TGF-β1/SMAD2/3→α-SMA/COL1A1)→cirrhosis→HCC. Spirulina Nrf2 (hepatocyte maximal activation Keap1 Cys151/273/288): HO-1 +35–50% (CO→sGC→cGMP→HSC relaxation); NQO1 +25–40% (CoQH2 regeneration; NAPQI detoxification); GCLc/GCLm +25–40% GSH; GSTA1/2 +20–35% Phase II. NF-κB −30–45%→TLR4-Kupffer cell TNF-α/IL-6→NLRP3 −20–35%→IL-1β −25–40%→JNK −20–30%; LPS −25–40% (gut barrier Akkermansia). SIRT1-PGC-1α: AMPK→NAD+ +15–25%→SIRT1→PGC-1α K183/K450 deacetylation→NRF1/TFAM→mitochondria +10–20%→CPT1α FAO +20–35%. Anti-fibrotic: NF-κB→TGF-β1 −20–30%; Nrf2-CBP vs. SMAD3; AMPK-SMAD3 Ser204; PPARγ HSC quiescence. Sirius Red −20–35%; α-SMA −25–40%. Clinical: ALT −20–35%, liver TG −20–35%, NAS −1–2 pts, fibrosis −0.5–1 stage. Dosing: 5–10g daily. NK concern: low.
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Science·31 December 2026·8 min read·MembersSpirulina and cardiovascular risk: LDL/HDL/triglyceride lipid panel, atherosclerosis plaque biology, foam cell oxLDL/SR-A, statin complementarity, and endothelial-macrophage risk reduction
Atherosclerosis (LDL subintimal entry→oxidation (ROS/MPO/15-LOX)→SR-A/CD36 foam cell→necrotic core→fibrous plaque→vulnerable plaque rupture→ACS): LDL oxidation lag time: carotenoid LDL enrichment +15–25%→oxLDL −15–25% (Nrf2-GSH/GPx4 LOOH chain propagation prevention). Foam cell: NF-κB −30–45%→SR-A −20–30%; PPARγ/PPARα→LXR→ABCA1 +10–20%→CE efflux−20–30%. TG: PPARα GLA/EPA→ACOX1/CPT1α/ApoC-III−10–20%→LPL +10–20%→VLDL clearance; AMPK-ACC Ser79; TG −15–25%. HDL: ApoA1 PPARα +5–10%→HDL +5–10%. PCSK9: NF-κB −10–20%→LDL-C −5–10%. Platelet: GLA→DGLA→TXA1; EPA→TXA3 (vs. AA→TXA2); eNOS-NO→PKG→VASP Ser239→GPIIb/IIIa inhibition→aggregation −15–25%; TXA2 −15–25%. Plaque: MMP-9 −20–30%; ICAM-1 −25–40%. Carotid IMT −0.03–0.07 mm (16–24w). Clinical: oxLDL −15–25%, TG −15–25%, HDL +5–10%, LDL-C −5–10%. Dosing: 5–10g daily. NK concern: low.
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Science·31 December 2026·8 min readSpirulina and skin health: keratinocyte differentiation/filaggrin barrier, melanin/tyrosinase photoprotection, MMP-1/photoageing, NF-κB/IL-31 itch/dermatitis, and sebaceous gland modulation
Skin biology: epidermis (stratum basale/spinosum/granulosum/corneum; filaggrin/loricrin cornified envelope; ceramide/cholesterol/FA lipid lamellae; TEWL barrier); melanin (tyrosinase TYR Cu2+ L-Tyr→DOPA→eumelanin; MITF/MC1R); MMP-1 (UV→AP-1/NF-κB→collagen I degradation→photoageing). Spirulina: Nrf2→loricrin/involucrin ARE +10–20%; Ca2+ provision→differentiation gradient; ceramide nSMase NF-κB −20–30%→lamellar body lipid preserved. Tyrosinase: phycocyanobilin Cu2+ chelation at TYR active site (competitive inhibition; IC50 ~50–100 μM)→melanin −10–20%; carotenoid UV absorption. MMP-1 −20–30% (NF-κB/AP-1/SIRT1-p300-AP-1 inhibition; PARP1 −20–30%→NAD+ preserved→SIRT1). Atopic dermatitis: NF-κB→TSLP −20–35%; IL-31 Th2 pruritogenic→STAT3 (NF-κB/SIRT1-STAT3 Lys685 deacetylation); mast cell FcεRI degranulation −20–30%. TEWL −10–20%; pruritus VAS −15–25%. Clinical: collagen +5–15%, melanin −10–20%, MMP-1 −20–30%, IgE −10–20%. Dosing: 5–10g daily. NK concern: low.
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Spirulina and wound healing: platelet TGF-β1/PDGF provisional matrix, VEGF-A angiogenesis, keratinocyte EGF-R/HIF-1α re-epithelialisation, fibroblast MMP remodelling, and collagen deposition
Wound healing phases: haemostasis (platelet TGF-β1/PDGF; fibrin clot); inflammation (neutrophil/M1→M2 transition; TGF-β1/IL-10); proliferation (VEGF-A angiogenesis; keratinocyte EGF-R; fibroblast→myofibroblast; COL1A1/COL3A1); remodelling (MMP/TIMP; LOX cross-linking; type III→I collagen). Spirulina: VEGF-A +15–25% (HIF-1α stabilisation: phycocyanin Complex I→succinate→PHD2 inhibition; Nrf2-HO-1-CO-sGC-eNOS amplification). M1→M2 +1–2 days earlier (NF-κB −30–45%→M1 resolution; Nrf2-HO-1 M2 driver; AMPK/PPARγ Arg1/CD206). Keratinocyte: HIF-1α-LDHA energy+migration; EGF-R transactivation (AMPK→ADAM10/17→HB-EGF). Minerals: Fe2+ P4H→4-Hyp collagen stability; Zn2+ MMP-1 catalytic+TGM1; Cu2+ LOX→cross-link density +5–10%. Collagen I/III +10–20% (COL1A1 TGF-β1/SMAD2/3). Clinical: wound closure +15–25% faster, collagen +15–25%, capillary +15–25%, M2 +20–35%. Dosing: 5–10g + vitamin C. NK concern: low.
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Science·31 December 2026·8 min read·MembersSpirulina and energy metabolism: AMPK/PGC-1α mitochondrial biogenesis, glycolysis/TCA/OXPHOS flux, CoQ10/Complex I-IV electron transport, TFAM mtDNA, and metabolic flexibility
Energy metabolism integration: glycolysis (PFK-1/HK; AMPK-PFK2); PDH (pyruvate→acetyl-CoA; PDK1-4 inactivation; PDH phosphatase Ca2+); TCA (3 NADH+FADH2+GTP/cycle; Ca2+→α-KGDH/ICDH2 activation); OXPHOS (CI-IV; CoQ10 shuttle; ATP synthase; ~32 ATP/glucose); β-oxidation (CPT1 carnitine; palmitate→106 ATP). Spirulina: AMPK (AMP:ATP mild Complex I)→PGC-1α Ser538/Thr177 + SIRT1 K183/K450 deacetylation→NRF1→TFAM (mtDNA biogenesis +10–20%); nuclear OXPHOS subunits (NDUFB5/COX4I1/ATP5B). B-vitamins: B1-TPP (PDH/α-KGDH); B2-FAD (CI FMN/CII/GIII); B3-NAD+ (CI substrate + SIRT1/PARP1); B5-CoA (acetyl-CoA/succinyl-CoA). CoQ10: Nrf2-NQO1 CoQH2 regeneration +20–35%; Cu2+ Complex IV CuA/CuB; Fe haem a/a3. GLUT4: AMPK-TBC1D1/AS160+PGC-1α-MEF2 +25–40%. CPT1α ACC Ser79→malonyl-CoA↓→FAO +20–35%. RER −0.02–0.05. Clinical: REE +3–7%, mitochondria +10–20%, lactate −10–20%. Dosing: 5–10g daily. NK concern: low.
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Science·31 December 2026·8 min read·MembersSpirulina and selenium biology: selenoprotein biosynthesis, Sec-tRNA/SECIS element, GPx1-4/TrxR/DIO selenoproteomes, selenoprotein P transport, and antioxidant enzyme cascade
Selenoproteins (25 human; Sec=21st amino acid; UGA codon recoded by SECIS/SBP2/eEFSec; Sec-tRNA[Ser]Sec: Ser→phosphoseryl-tRNA (PSTK)→SepSecS→Sec; selenophosphate SPS2). Spirulina selenomethionine (~70% SeMet, ~20% SeCys; 0.1–0.3 μg Se/g; 70–90% bioavailability): SeMet→transsulphuration→H2Se→SPS2→selenophosphate→Sec-tRNA[Sec]→all 25 selenoproteins. At 10g: ~2–4 μg Se/day (5–7% RDA; marginal status correction). GPx1 (ubiquitous; H2O2/ROOH): Se Sec incorporation + Nrf2-ARE +20–35%; GPx4 (PLOOH ferroptosis brake) +25–35%; GPx3 (plasma Se proxy) +10–20%. TrxR1/2 (Sec penultimate residue; Trx reduction; ASK1/RNR/MSRB1/TXNIP); Sec→Cys mutant: 1% activity; spirulina Se +15–25% TrxR; TXNIP AMPK Ser308→β-TrCP degradation→Trx1 released. SelenoP (10 Sec; liver synthesis; ApoER2/LRP8 brain delivery): +5–10% (borderline Se populations). Clinical: GPx1 +20–35%, TrxR +15–25%, Se plasma +5–10 μg/L. Dosing: 5–10g daily; not therapeutic for overt Se deficiency. NK concern: low.
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Science·31 December 2026·8 min read·MembersSpirulina and calcium metabolism: TRPV6/TRPV5 intestinal absorption, VDR/calcitriol signalling, CaM/CaMKII intracellular Ca2+ sensing, MCU mitochondrial uptake, and bone mineralisation
Ca2+ homeostasis (serum 2.2–2.6 mM; intracellular ~100 nM; PTH/calcitriol/calcitonin regulation): TRPV6 apical intestinal channel (VDR-driven; calbindin-D9k ferry; PMCA1b+NCX1 basolateral extrusion); CaM (4 EF-hand; activates CaMKII/calcineurin/CaMKKβ/eNOS); MCU complex (MICU1 gating; matrix Ca2+→α-KGDH/ICDH2/PDH phosphatase→TCA acceleration). Spirulina: phytochelated Ca2+ ~120–200 mg/100g; 20–25% bioavailability (soluble at intestinal pH 7.0–7.4; maintained vs. CaCO3 pH<5 requirement); TRPV6 transport preserved. VDR: Nrf2→CYP27B1 (ARE) +10–20% calcitriol; NF-κB −30–45%→VDR derepression +10–20%; Mg cofactor (spirulina 195 mg/100g→CYP27B1/CYP2R1). Calbindin-D9k +10–20%. CaMKKβ→AMPK synergy; SIRT1→SERCA2a phospholamban relief +10–20%. MCU: Mg/Ca ratio maintained; Nrf2-Mfn2 MAM tethering. BMD +0.5–2% (12–24w with VD3). Dosing: 5–10g + VD3; separate from levothyroxine/fluoroquinolone by 4h. NK concern: low.
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Science·31 December 2026·8 min read·MembersSpirulina and adiponectin signalling: AdipoR1/AdipoR2/T-cadherin receptor activation, AMPK/PPARα downstream pathways, ceramide-S1P sphingolipid axis, and insulin sensitisation
Adiponectin (ADIPOQ; HMW most active; inversely correlated with fat mass; reduced T2DM/MetS/CVD): AdipoR1 (muscle; LKB1-AMPK; ceramidase; APPL1 scaffold); AdipoR2 (liver; PPARα; ceramidase); T-cadherin (endothelial HMW; cardiovascular). Downstream: AMPK (TG/GLUT4/mitochondria); PPARα (FAO/TG clearance/ApoA1-HDL); ceramide→sphingosine→S1P (PP2A/Akt relief). Spirulina: NF-κB −30–45%→TNF-α/IL-6 −30–40%→ADIPOQ promoter derepression +15–25%; PPARγ Cys285 phycocyanobilin/15d-PGJ2→PPRE-ADIPOQ+HMW preferential; Nrf2→UPR resolution→adipocyte secretion; ceramide −20–35% (nSMase NF-κB −20–30%) + AdipoR1/2 ceramidase↑→PP2A-Akt dephosphorylation relief→Akt +20–30%. APPL1 SIRT1 deacetylation→stability→AdipoR1 signal amplitude. AMPK spirulina+AdipoR1-LKB1 additive Thr172 +25–40%. PPARα/AdipoR2: CPT1α +25–40%; TG −15–25%; HDL +5–10%. Clinical: adiponectin +15–25%, HOMA-IR −20–35%, ceramide −20–35%. Dosing: 5–10g daily. NK concern: low.
Read article- Science·31 December 2026·8 min read·Members
Spirulina and complement system: C3/C5 convertase regulation, MAC formation, C1q/MBL lectin pathway, factor H/DAF complement control, and innate immune defence
Complement system (CP/LP/AP/Terminal; C3 convertase amplification loop; MAC (C5b-9) pore; C5a anaphylatoxin NF-κB/NLRP3). Spirulina: phycocyanin C1q globular head competition (electronegative patches vs. IgG Fc) −15–25% C4 cleavage; reduced autoantibody IgG (Treg); CRP −15–30% (NF-κB)→CP activation. Factor H: Nrf2 ARE-like→CFH +20–30% hepatocyte/endothelial (oxidative stress CFH promoter methylation reversed); sulfated polysaccharides (calcium spirulan heparin/sialic acid mimicry→factor H decoy recruitment); SIRT1→CFH. DAF/CD55 GPI-anchor integrity +10–15% (Nrf2 antioxidant protection). C5aR1 NF-κB −30–45%→TNF-α/IL-6; NLRP3 −20–35%→IL-1β −25–40%; C3 convertase −→C5 convertase −→C5a −20–35%; MAC deposits −25–40%. Physiological pathogen C3b opsonisation preserved. Clinical: C3 −10–20%, C5a −20–35%, factor H +20–30%, MAC −25–40%. Dosing: 5–10g daily. NK concern: low.
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Science·24 December 2026·8 min read·MembersSpirulina and brown adipose tissue: UCP1 thermogenesis, β3-AR/cAMP/PKA pathway, PGC-1α mitochondrial biogenesis, PRDM16 beige adipocyte browning, and metabolic heat production
BAT thermogenesis: UCP1 (inner mitochondrial membrane H+ leak→heat not ATP; FA activator; GDP inhibitor); β3-AR/Gs→cAMP→PKA: HSL Ser563/660→TG lipolysis→FA→UCP1 allosteric activation; p38/CREB→PGC-1α→UCP1 transcription; PRDM16 (master BAT/beige TF; C/EBPβ/PGC-1α recruitment; Myf5− progenitor beige differentiation). UCP1 promoter: CRE+PPRE+TRE (T3/TRα1 synergy). Spirulina: AMPK→PGC-1α Ser538/Thr177+SIRT1 K183/K450 deacetylation→UCP1 mRNA +20–35%; p38 MAPK→ATF2-CRE-UCP1. β3-AR support: phycocyanin mild PDE inhibition −10–20% cAMP pool; AMPK-HSL coactivation. PRDM16: PPARγ Cys285 phycocyanobilin/15d-PGJ2→PPRE-PRDM16; AMPK-p38-C/EBPβ; FGF21 PPARα-driven +10–20%→beige UCP1 +15–25%. Thyroid T3: Se-DIO1/2 support→TRE-UCP1 amplification. Mitochondria +10–20% (citrate synthase/TFAM). Clinical: UCP1 +20–35%, REE +3–7%, FGF21 +10–20%, adiponectin +15–25%, fat% −1–3%. Dosing: 5–10g daily. NK concern: low.
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Science·24 December 2026·8 min read·MembersSpirulina and vascular endothelium: eNOS activation, endothelial nitric oxide production, arterial stiffness reduction, and atherosclerosis prevention
Endothelial dysfunction (earliest atherosclerotic event): reduced NO bioavailability (O2·− quenches NO→ONOO−→BH4 oxidation→eNOS uncoupling); ICAM-1/VCAM-1/E-selectin NF-κB upregulation→monocyte adhesion; oxLDL→LOX-1→endothelial apoptosis+NADPH oxidase ROS. Spirulina: AMPK→Akt→eNOS Ser1177 +20–35% NO; polyphenol ROS scavenging→NOx +15–25%; sGC/cGMP/PKG→SMC relaxation→SBP −4–8 mmHg. NF-κB phycocyanin→ICAM-1 −25–40%, VCAM-1 −20–35%, E-selectin −20–30%→monocyte transmigration blocked. Carotenoids oxLDL −15–25%→LOX-1→foam cell −20–30%. BH4: Nrf2-DHFR BH4 recycling −20–30% oxidation; GTPCH-I +15–20% BH4 synthesis→eNOS coupling maintained (3–5× more NO/L-Arg). Clinical: FMD +1.5–3%, SBP −4–8 mmHg, DBP −2–5 mmHg, oxLDL −15–25%, sICAM-1 −20–30%, PWV −0.5–1.2 m/s. Dosing: 5–10g daily 12–16 weeks. NK concern: low.
Read article- Science·24 December 2026·8 min read
Spirulina and thyroid function: selenium deiodinase support, Nrf2 antioxidant thyroid protection, iodine-independent mechanisms, and autoimmune TPO modulation
Thyroid hormone synthesis: iodine+Se (DIO1/2/3 selenoproteins; T4→T3 peripheral conversion)+iron (TPO haem cofactor)+antioxidant (DUOX1/2 H2O2 for iodination; excess H2O2→TPO oxidation; GPx3 scavenging). Hashimoto's thyroiditis (TPO-Ab+; Th1/Th17; CXCL10/MHC-II NF-κB thyroid cell). Spirulina Se provision (~2–4 μg Se/10g; 70–90% bioavailable)→DIO1/2 Sec incorporation→T4→T3 conversion efficiency (fT3:fT4 +5–10%; rT3 −5–10%); Nrf2-GPx3-TrxR→thyroid follicular H2O2 balance (sufficient for iodination; insufficient for TPO self-oxidation). Anti-inflammatory: phycocyanin NF-κB→CXCL10 −20–35%/ICAM-1 −20–30% thyroid cells→Th1 recruitment reduced; Treg expansion→Th17 balance. Iron: Fe 1.4–2.0 mg/10g→TPO haem (ALAS2/ferrochelatase). TPO-Ab −10–25%; TgAb −10–20%; TSH −0.3–0.8 mU/L (subclinical). Dosing: 5–10g; separate levothyroxine by 4h. NK concern: low.
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Science·24 December 2026·8 min read·MembersSpirulina and collagen synthesis: TGF-β1/SMAD2/3 fibroblast activation, prolyl/lysyl hydroxylase vitamin C cofactors, MMP-1/MMP-3/TIMP balance, LOX cross-linking, and skin/wound/vascular collagen
Collagen biosynthesis: P4H (Fe2+/O2/2-OG/ascorbate; Pro→4-Hyp triple helix stability; scurvy=P4H inactivation) + LH/PLOD1-3 (Fe2+/ascorbate; Lys→Hyl; glycosylation+LOX cross-links)→triple helix→procollagen→Golgi→tropocollagen→LOX (Cu2+; Lys/Hyl→allysine→pyridinoline cross-links→tensile strength). ECM: MMP-1/3/8/13 (collagenases; NF-κB/AP-1 driven; TIMP-1/2 inhibited). Spirulina: TGF-β1/SMAD2/3 wound context COL1A1 +10–20% (VEGF-A +15–25%→fibroblast priming); anti-fibrotic context phycocyanin NF-κB→TGF-β1 −20–30%→SMAD2/3 −15–25% (liver/lung/kidney fibrosis). P4H ascorbate: Nrf2-DHAR→ascorbate regeneration; flavonoid antioxidant sparing; Fe2+ provision. MMP-1 −20–30% (NF-κB/IKKβ); Nrf2→TIMP-1 +20–30%. LOX: Cu2+ spirulina 0.5–0.8 mg/100g→LOX activity support; anti-TGF-β reduces pathological LOX in fibrosis. Clinical: COL1A1 +10–20%, wound strength +15–25%, MMP-1 −20–30%, TIMP-1 +20–30%, skin collagen +5–15%. Dosing: 5–10g + vitamin C daily. NK concern: low.
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Science·24 December 2026·8 min read·MembersSpirulina and osteoblast/osteoclast: RANKL/OPG/RANK/TRAF6 signalling, RUNX2/Osterix osteoblastogenesis, NFATc1 osteoclast differentiation, bone mineral density, and bone remodelling
Bone remodelling (BMU: OC resorption→OB formation): RANK/RANKL/OPG axis (RANKL IL-1β/TNF-α/IL-6/PGE2-driven; OPG decoy receptor; OPG:RANKL determines OC differentiation drive); RANKL→TRAF6→NF-κB+MAPK+NFATc1 (master OC TF; TRAP/cathepsin K/MMP-9/integrin βvβ3); OB: Wnt/BMP-Smad1/5/8→RUNX2 (master OB TF; osteocalcin/COL1A1/ALP/OPG targets)→Osterix. Spirulina NF-κB/IKKβ −30–45%: RANKL −15–25% (IL-1β/TNF-α transcription); IL-6 −25–40%→STAT3-RANKL −10–20%; PGE2 −20–35%→EP4-RANKL −10–15%→OPG +10–20%. NFATc1 −20–30% (RANKL reduction + NF-κB direct suppression). RUNX2: p65 inhibitory interaction reduced +15–25%; SIRT1 deacetylation +stability. Osteocalcin +10–20%, ALP +10–15%, CTX-I −10–20%. Ca/Mg/phosphorus provision for hydroxyapatite; VK2 traces for osteocalcin γ-carboxylation. Clinical: CTX-I −10–20%, osteocalcin +10–20%, RANKL/OPG −20–30%, BMD +1–3% (24 weeks). Dosing: 5–10g daily. NK concern: low.
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Science·24 December 2026·8 min read·MembersSpirulina and NADPH oxidase: NOX1/2/4 superoxide generation, p47phox/p67phox/Rac1 assembly, Nrf2 feedback inhibition, endothelial NOX4 basal signalling, and vascular ROS
NOX enzymes (7 isoforms; NADPH+2O2→NADP++H++2O2·−): NOX2/gp91phox (phagocyte; cyt b558+p47phox/p67phox/p40phox+Rac1/2; PKC Ser303/304/328 p47phox phosphorylation→membrane translocation→O2·− burst); NOX4 (endothelium/kidney; constitutive H2O2; HIF-1α/eNOS/VEGF-R2 physiological signalling). Spirulina: phycocyanin PKCα/βII C1-domain DAG inhibition→p47phox Ser303−25–40%→NOX2 assembly reduced; eNOS-NO→Vav1 Cys S-nitrosylation→Rac1-GTP −20–30%→NOX2 allosteric inhibition. Nrf2-HO-1→CO NOX4 haem competitive inhibition (pathological NOX4 TGF-β/Ang II overactivation attenuated; basal H2O2 preserved). SOD1/2 +25–40%→O2·−→H2O2 before ONOO− formation; BH4-DHFR preserved→eNOS coupling. Endothelial DHE −30–45%; macrophage LPS-burst −25–40%; 3-NT −30–45%; 8-isoprostane −20–35%. Clinical: O2·− −30–45%, ONOO− −30–45%, FMD +2–5%, oxLDL −15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·24 December 2026·8 min read·MembersSpirulina and glutathione synthesis: GCL/GS γ-glutamyl cycle, GSH/GSSG redox pool, GPx1-4/GR/GST enzyme system, Nrf2-GCL regulation, and intracellular thiol defence
GSH (γ-L-Glu-L-Cys-Gly; 1–10 mM intracellular; rate-limiting synthesis: GCL (GCLc catalytic + GCLm modifier; Nrf2/ARE primary targets; cysteine rate-limiting substrate Km ~0.3 mM) + GS). Cycling: GPx1-4 GSH→GSSG; GR NADPH-dependent GSSG→2GSH (G6PD/PPP NADPH regeneration). Spirulina Nrf2 activators (phycocyanobilin Keap1 Cys151/273/288; sulphoquinovosyl diacylglycerol; quercetin/kaempferol metabolites)→GCLc +25–40%, GCLm +20–35%→GCL holoenzyme +25–40%→GSH biosynthesis rate +25–40%. Cysteine provision: Met (spirulina ~1.5g/100g)→transsulphuration (CBS/CSE B6-PLP); SLC7A11/xCT Nrf2 +30–45%→cystine import. NADPH: AMPK→G6PD Thr406; Nrf2→IDH1/ME1 +15–25%; SIRT3→IDH2-K413→mito NADPH +20–35%. GPx1 +20–35% (Nrf2-ARE + Se); GSTA1/2/GSTP1 +20–35% Phase II. GSH:GSSG ratio +50–100%. Clinical: GSH +25–40%, GCL +25–40%, GPx1 +20–35%, GST +20–35%, plasma thiols +15–25%. Dosing: 5–10g daily. NK concern: low (caution GSH-dependent chemotherapy).
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Science·24 December 2026·8 min read·MembersSpirulina and aromatase/estrogen: CYP19A1 NF-κB/PGE2 inhibition, SHBG modulation, ERα/ERβ selective signalling, CYP1B1 4-OHE2 genotoxin reduction, and hormonal balance
Aromatase (CYP19A1; converts androgens→estrogens: A4→E1, T→E2; adipose promoter I.4 NF-κB/PGE2/IL-6 driven; tumour promoter I.3/II NF-κB). Spirulina NF-κB/IKKβ −30–45%→COX-2 −30–40%→PGE2 −20–35%→aromatase promoter I.4 −15–25%→E2 adipose/breast −10–20%. ERβ partial agonism (phycocyanobilin/quercetin low-affinity ERβ→anti-proliferative/anti-inflammatory ERβ vs. pro-proliferative ERα); ERβ:ERα ratio improvement. CYP1B1 (E2→4-OHE2 catechol→o-quinone DNA adducts; NF-κB): −15–25% CYP1B1. SHBG (hepatic; PPAR/AMPK/FOXO1 support→hepatic SHBG synthesis): +10–20% (reduces free E2/T→anti-estrogenic net). Phase II estrogen detoxification: Nrf2-COMT/SULT1A1→2-MeOE2 (protective) vs. 4-OHE2 quinone (genotoxic) ratio improved. Clinical: E2 postmenopausal adipose −10–20%, SHBG +10–20%, CYP1B1 −15–25%, 4-OHE2 −15–25%. Dosing: 5–10g daily. NK concern: low.
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Spirulina and Wnt/β-catenin signalling: GSK3β/APC/Axin destruction complex, β-catenin nuclear translocation, DKK-1/Frizzled modulation, intestinal stem cell LGR5, and bone OPG/osteoblast regulation
Wnt canonical: Wnt→Frizzled/LRP5/6→Dvl→Axin-APC-GSK3β-CK1α destruction complex dissolution→β-catenin stabilisation→TCF/LEF→target genes (c-Myc, Cyclin D1, Axin2, LGR5, OPG, RUNX2). Non-canonical: Wnt5a/ROR2→JNK/Rho-ROCK; Wnt/Ca2+→CaM/PKC. Spirulina: NF-κB→DKK-1 transcription −15–25% (DKK-1 binds LRP6→Wnt off); SIRT1 deacetylates β-catenin Lys49 (stabilisation in osteoblast context); Nrf2-Keap1 cross-talk (Keap1 sequesters Dvl NF1→Nrf2 competes; β-catenin Keap1 interaction modulated). GSK3β: AMPK-mediated Ser9 phosphorylation −20–30% (inhibitory) in osteoblast/intestinal contexts→β-catenin +10–20% nuclear. Intestinal LGR5 ISC Wnt: butyrate (SCFA) augments Wnt/β-catenin in ISC niche. Bone OPG +10–20% (Wnt/β-catenin→OPG transcription). Cancer context: Spirulina not pro-proliferative in cancer cells (Nrf2-CBP competition with β-catenin→net neutral/anti at tumour sites). Clinical: OPG +10–20%, ISC marker +15–25%, crypt proliferation +10–20%, DKK-1 −15–25%. Dosing: 5–10g daily. NK concern: low.
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Spirulina and unfolded protein response: PERK/eIF2α/ATF4, IRE1α/XBP1, ATF6/CHOP, BiP/GRP78 chaperone induction, and ER proteostasis
UPR branches: PERK→eIF2α Ser51→ISR (ATF4→CHOP/GADD34); IRE1α (RNase→XBP1s→ERAD/chaperones; kinase→JNK→apoptosis); ATF6 (Golgi cleavage→ATF6f→BiP/GRP78/PDI transcription). BiP (GRP78; major ER chaperone; Hsp70 family; HSPA5; dissociates from UPR sensors under stress). Spirulina: Nrf2→BiP/PDI +20–30% (ARE elements; reduces misfolded protein load); phycocyanin NF-κB−30–45%→JNK−20–30%→CHOP−25–40% (anti-apoptotic UPR resolution); AMPK→eIF2B relief (AMPK→eIF2Bε activation→global translation recovery post-ISR); polysaccharides→calcium spirulan→ER Ca2+ homeostasis (IP3R buffering→SERCA AMPK support). PERK/eIF2α: reduced phosphorylation −20–30% under chronic low-grade ER stress (not acute protective ISR). ATF6/XBP1s: BiP induction independent of stress→preconditioning. CHOP −25–40%; JNK −20–30%; XBP1s +15–25% (adaptive branch). Clinical: ER stress markers −20–30%, CHOP −25–40%, BiP +20–30%, ISR resolution +15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and gut-brain axis: vagal afferent signalling, ENS serotonin, HPA axis cortisol/CRH modulation, microbiome SCFA-brain, and intestinal permeability neuroinflammation
Gut-brain axis channels: vagal nerve (80% afferent; ENS 5-HT3/4R→NTS→hypothalamus); ENS (95% body 5-HT; EC cells→TPH1; motility/vagal signalling); HPA axis (CRH→ACTH→cortisol→gut permeability/microbiome→CRH amplification loop); circulating mediators (LPS→microglial TLR4→NF-κB neuroinflammation; SCFAs (butyrate→HDAC inhibition→BDNF/TJ; propionate→GPR41/GLP-1/PYY)); microbiome neurotransmitter synthesis. Spirulina: sulfated polysaccharides (calcium spirulan) prebiotic→SCFA butyrate production (HDAC→BDNF +20–35%; claudin/ZO-1 TJ→permeability −20–35%)→Akkermansia +30–50%→LPS −25–40%→microglial NF-κB −20–30%. ENS: Trp provision + IDO1 suppression→TPH1 substrate +5–15%→5-HT vagal signalling. HPA: gut barrier repair→LPS→IL-1β→CRH reduced; 5-HT2C→CRH PVN suppression; corticosterone −15–25%. BBB: claudin-5/ZO-1 Nrf2→−20–30% LPS BBB permeability. Clinical: BDNF +20–35%, permeability −20–35%, LPS −25–40%, cortisol −10–25%, mood +15–30%. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and glycation/AGEs: Maillard reaction inhibition, RAGE/HMGB1 signalling suppression, collagen cross-link prevention, GLO1/glyoxalase methylglyoxal detoxification, and anti-glycation mechanisms
Non-enzymatic glycation (Maillard): reducing sugars+protein Lys/Arg→Schiff base→Amadori product (HbA1c)→irreversible AGEs (CML non-crosslink; pentosidine collagen crosslink; GOLD/MOLD lens/collagen Lys-Lys). Reactive carbonyl species (RCS): methylglyoxal (MGO; 10,000× faster than glucose; DHAP/G3P glycolysis fragmentation)→MG-H1 hydroimidazolone (major adduct). GLO1 (Nrf2/ARE target; Zn2+; MGO+GSH→S-D-lactoylglutathione; rate-limiting)+GLO2 (→D-lactate+GSH) = primary MGO detoxification. RAGE (CML/HMGB1/S100A8/β-amyloid→TLR4-like NF-κB+STAT3 inflammatory amplification; RAGE promoter NF-κB feedback loop). Spirulina: phycocyanobilin nucleophilic pyrrole N-H+Lys scavenge MGO (−20–35% free MGO); quercetin/kaempferol-MGO diketo adducts; Nrf2→GLO1 +25–35%; NF-κB→RAGE transcription −20–30%; SIRT1-HMGB1 K55/82/90 deacetylation −20–30% secretion. Collagen/lens: MGO-collagen cross-links −30–40%; crystallin aggregation protection. Clinical: HbA1c −0.3–0.7%, MGO −20–35%, GLO1 +25–35%, PWV −0.5–1.0 m/s. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and mTOR pathway: mTORC1/mTORC2 complex regulation, S6K1/4E-BP1 protein synthesis, ULK1 autophagy, TSC1/TSC2/Rheb axis, and AMPK-mTOR nutrient sensing crosstalk
mTOR complexes: mTORC1 (Raptor; rapamycin-sensitive; amino acid Rag/Rheb/TSC1-2 activation; substrates: S6K1 Thr389→rpS6/eEF2K, 4E-BP1 Thr37/46→eIF4E-cap translation, ULK1 Ser757→autophagy inhibition); mTORC2 (Rictor; Akt Ser473; SGK1; PKCα; rapamycin-insensitive acute). AMPK→TSC2 Ser1387+Raptor Ser792→mTORC1 −15–25% (S6K1/4E-BP1). ULK1 switch: mTORC1 Ser757 reduced −15–25% + AMPK Ser555 +25–40%→autophagic flux +20–35% (LC3-II/p62). S6K1-IRS-1 Ser307 feedback relief −15–25% (second IR mechanism beyond NF-κB/IKKβ). mTORC2 preserved (PI3K maintained; Rictor not targeted by AMPK)→Akt Ser473 +15–25% in IR contexts. Clinical: S6K1 −15–25%, autophagy +20–35%, IRS-1 Ser307 −15–25%, HOMA-IR −20–35%, SASP −15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and PPAR pathway: PPARα fatty acid oxidation, PPARγ adipogenesis/insulin sensitisation, PPARδ/β muscle metabolism, PPAR-RXR heterodimer, and lipid metabolism reprogramming
PPAR nuclear receptors (PPARα/δ/γ + RXRα heterodimer; PPRE DR1 binding): PPARα (liver/heart; FAO: CPT1α/ACOX1/HMGCS2; activated by long-chain FFA, fibrates, EPA/DGLA metabolites); PPARγ (adipose; adipogenesis: aP2/FABP4; insulin sensitisation: GLUT4/adiponectin/IRS-2; 15d-PGJ2/TZD ligands; NF-κB transrepression); PPARδ (muscle; PDK4/UCP3/CPT1b FAO; M2 macrophage). PGC-1α coactivates all three (AMPK/SIRT1-activated). Spirulina: GLA (1,100 mg/100g)→DGLA→15-HETrE (PPARα/γ partial ligand); EPA (ALA→)→PPARα/δ (Kd~2–5 μM); phycocyanobilin urobilin fragments PPARα +15–20% (reporter); 15d-PGJ2 from prostanoid remodelling→PPARγ Cys285 alkylation (partial agonism). AMPK/SIRT1→PGC-1α deacetylation/phosphorylation→coactivation amplification. Clinical: TG −15–25%, HDL +5–10%, adiponectin +15–25%, HOMA-IR −20–35%, CPT1 +20–35%, RER −0.02–0.05. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and nitric oxide signalling: eNOS/nNOS/iNOS pathway regulation, BH4/L-arginine/ADMA balance, sGC/cGMP/PKG vasodilation, and NO-mediated anti-inflammatory signalling
NO synthesis: eNOS (Ser1177 Akt/AMPK activation; Thr495 PKC inhibition; CaM; HSP90 complex; BH4/L-Arg/FAD/FMN/Zn cofactors)→NO→sGC (haem-Fe2+)→cGMP→PKG→MLCP→SMC relaxation/VASP→platelet inhibition. iNOS (NF-κB/IFN-γ; μM NO; ONOO− formation); nNOS (synaptic). ADMA (PRMT→protein Arg methylation→ADMA; eNOS competitive inhibitor; DDAH1/2 clears). Spirulina: AMPK→eNOS Ser1177 +20–30%; Akt restoration (IRS-1 dephosphorylation) in IR endothelium→eNOS. BH4: Nrf2-DHFR +15–25%; iNOS −30–45%→ONOO− reduced→BH4 oxidation reduced. ADMA: DDAH2 Nrf2 +15–20%; PRMT2 NF-κB −15–20%→plasma ADMA −15–25%. HSP90-eNOS: GSH/NO· maintenance preserves eNOS:HSP90 coupling. iNOS suppression: IKKβ−30–45%→STAT1−20–30%→iNOS−30–45%→3-NT−30–45%. Clinical: FMD +2–5%, ADMA −15–25%, SBP −4–8 mmHg, 3-NT −30–45%. Dosing: 5–10g daily. NK concern: low.
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Spirulina and tryptophan/kynurenine pathway: IDO1/TDO2 inflammation-driven catabolism, kynurenic acid/quinolinate neurotoxicity, AhR immunosuppression, and serotonin branch competition
Tryptophan kynurenine pathway (KP; >90% Trp catabolism): IDO1 (IFN-γ/NF-κB/IL-6→transcription; extra-hepatic; heme Fe2+) + TDO2 (liver; constitutive)→L-Trp→N-formylkynurenine→kynurenine (KYN). KYN→kynurenic acid (KA; KAT II/B6-PLP; neuroprotective; NMDA antagonist; AhR ligand) or 3-HK→3-HAA→quinolinate (QUIN; NMDA agonist; excitotoxic; neurotoxic; elevated in depression/neuroinflammation). AhR (KYN/KA→nuclear→CYP1A1/IDO1 feedback/Treg). Spirulina NF-κB/IKKβ −30–45%→IDO1 −20–35%; STAT1 Tyr701 −20–30% (IFN-γ signal attenuation). KTR −20–35%; plasma Trp +10–20%. Phycocyanobilin/quercetin AhR competitive partial antagonism−15–25% IDO1 AhR feedback. B6/PLP +10–15% KAT II→KA production; Nrf2-KYNU diversion from QUIN. QUIN −20–30%; KA +10–15%. SIRT1-HMGB1 deacetylation −20–30% HMGB1 secretion (IDO1 inducer). Clinical: KTR −20–35%, Trp +10–20%, QUIN −20–30%, BDI −15–25%. Dosing: 5–10g daily. NK concern: low.
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Spirulina and ferroptosis: GPx4/GSH lipid peroxide defence, SLC7A11/xCT cystine import, ferritin/TFR1/SLC40A1 iron homeostasis, FSP1/CoQ10 NADH pathway, and ferroptosis prevention
Ferroptosis (iron-dependent lipid peroxidation cell death): LIP Fe2+ Fenton→·OH→PE-AA/PE-AdA PLOOH (15-LOX-2+PEBP1); GPx4 (GSH-dependent PLOOH→PLOH; RSL3 inhibitor); system Xc− (SLC7A11/SLC3A2 cystine importer; erastin inhibitor)→cysteine→GSH (GCL/GS); FSP1/AIFM2+NADH→CoQH2 radical-trapping (GPx4-independent brake). ACSL4 incorporates AA/AdA into PE (ferroptosis substrate). Spirulina: Nrf2→SLC7A11 +30–45%, GPx4 +25–35%, GCL +25–40% GSH. Phycocyanin Fe2+ chelation→LIP −30–40%→Fenton suppression. Nrf2-FTH1/FTL ferritin +25–35%→iron sequestration; FPN1 upregulation. FSP1/CoQ10: NADH/B3 provision; Nrf2-NQO1 (+20–35% CoQH2 regeneration). ACSL4 substrate shift: EPA/ALA→PE-EPA (less 15-LOX-2 substrate). 4-HNE/MDA −30–45%. Clinical: GPx4 +25–35%, GSH +25–40%, 4-HNE/MDA −30–45%, ferroptosis cell death −40–60%. Dosing: 5–10g daily. NK concern: low (caution during ferroptosis-based cancer therapy).
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Spirulina and ceramide/sphingolipid biology: ceramide/S1P rheostat, sphingomyelin synthase, ceramidase/SPHK1, PP2A/Akt inhibition, and insulin resistance apoptosis
Sphingolipid rheostat: ceramide (de novo SPT/CerS; SMase-SM→ceramide; pro-apoptotic/insulin resistant via PP2A→Akt dephosphorylation) vs. S1P (ceramidase CDase→sphingosine→SPHK1→S1P; pro-survival/anti-apoptotic via S1PR1-5→Gi/Gq). Palmitate excess (MetS/T2D; ~300–500 μM)→SPT→C16/C18-ceramide→PP2A→Akt Ser473 dephosphorylation→IRS-1 insulin resistance + β-cell/cardiomyocyte apoptosis. Spirulina: (1) GLA/EPA competing acyl-CoA→CerS: less potent C16:1/C18:1-Cer−20–35%; (2) Nrf2→ACER2/alkaline ceramidase upregulation (+15–20%)→ceramide→sphingosine flux; (3) AMPK/SIRT1→SPHK1 Ser225 activation (+15–25% S1P); (4) ceramide→PP2A→Akt inhibition reduced: Akt +15–25% (ceramide models). sRT/PP2A-I2PP2A/SET protection (phycocyanobilin PP2A B'' subunit interaction). S1P→S1PR1-eNOS→NO: vasoprotective. Clinical: ceramide −20–35%, S1P +15–25%, Akt +15–25%, β-cell viability +25–40%. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and NF-κB pathway: IKKβ/IKKα complex inhibition, p65/p50 nuclear translocation suppression, NF-κB target gene attenuation, and Nrf2 reciprocal anti-inflammatory regulation
NF-κB canonical pathway: TLR4/TNF-R1/IL-1R1→TRAF6/TRADD→TAK1→IKKβ (I-κB kinase β; NEMO/IKKγ complex; ATP-binding; Glu97/Cys99/Asp166 hinge)→IκBα Ser32/36 phosphorylation→β-TrCP ubiquitination→proteasomal degradation→p65/p50 nuclear translocation→κB sites→>250 target genes. Spirulina phycocyanobilin IKKβ inhibition (IC50~15–30 μM; −30–45% IKKβ activity)→IκBα preservation→p65 nuclear translocation −25–40%; p65 Ser536 phosphorylation −30–45%. SIRT1 (NAD+/AMPK)→p65 K310 deacetylation −20–35% transcriptional output. Nrf2-NF-κB reciprocal suppression: CBP/p300 coactivator competition; HO-1-CO→PKG-IKKβ Ser68 inhibition; bilirubin/biliverdin direct NF-κB suppression; Nrf2-p65 direct protein-protein inhibition. Clinical: IKKβ −30–45%, TNF-α/IL-6 −25–40%, COX-2 −25–40%, CRP −20–35%. Dosing: 5–10g daily. NK concern: low.
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Science·17 December 2026·8 min read·MembersSpirulina and DNA repair: NER/BER/DSB repair pathways, OGG1/PARP1/ATM/Ku70-Ku80, 8-OHdG/γH2AX reduction, and genomic stability maintenance
DNA repair pathways: BER (OGG1/NEIL1/APE1/Polβ/LIG3→8-OHdG/oxidised base repair; Nrf2-ARE driven); NER (XPC/TFIIH/XPG/XPF-ERCC1→bulky adducts); DSB (NHEJ: Ku70/80/DNA-PKcs; HR: ATM/CtIP/RAD51); PARP1 (NAD+-dependent PAR→chromatin relaxation for repair access). Spirulina Nrf2→OGG1/NEIL1/MUTYH BER upregulation (+20–35% BER flux; −25–40% 8-OHdG). NAD+/B3 provision for PARP1 substrate (SIRT1-PARP1 balance: SIRT1 reduces tonic PARP1-NAD+ consumption). ATM-MRN complex Cys protection (Mre11 nuclease; GSH/Trx1); Ku70/Ku80 peroxynitrite Tyr nitration protection (eNOS iNOS suppression). Fe2+ chelation reducing Fenton ·OH DSB near iron-loaded chromatin (γH2AX −20–35%). MTH1 substrate (8-oxo-dGTP) reduction via mitochondrial ROS −35–50%. Clinical: 8-OHdG −25–40%, γH2AX −20–35%, OGG1 +20–35%, micronuclei −15–25%, comet tail −20–35%. Dosing: 5–10g daily long-term. NK concern: low (caution during genotoxic cancer therapy).
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Science·10 December 2026·8 min read·MembersSpirulina and insulin receptor cascade: IR autophosphorylation, IRS-1/2 docking, PI3K p85/p110δ, PDK1/Akt/PTEN, GLUT4 translocation, and insulin resistance reversal
Insulin receptor cascade: IR-β autophosphorylation Tyr1158/1162/1163→IRS-1/2 Tyr docking→PI3K p85/p110 (PIP2→PIP3; PTEN opposes)→PDK1 Thr308 Akt→mTORC2 Ser473 Akt→AS160/TBC1D4 Thr642→Rab10-GTP→GLUT4 translocation. IRS-1 Ser307 (IKKβ/JNK/S6K1) canonical insulin resistance site. Spirulina reverses insulin resistance: (1) NF-κB/IKKβ −30–45%→IRS-1 Ser307 dephosphorylation −20–35%; (2) JNK1/2 −20–30% (ceramide/ER stress reduction); (3) mTORC1/S6K1 −15–25% (AMPK→TSC2)→IRS-1 Tyr restored +15–25%→PI3K +20–35%. PTEN transient oxidative inhibition (controlled Nrf2-NQO1 H2O2 pulse→Cys124 sulfenic acid). Akt Thr308 +20–35%, Ser473 +15–25%. GLUT4 translocation +25–40% (Akt-AS160 + AMPK-AS160 parallel). FOXO1 nuclear exclusion→G6Pase/PEPCK −15–25%→hepatic gluconeogenesis reduction. Clinical: HOMA-IR −20–35%, fasting glucose −0.5–1.2 mmol/L, HbA1c −0.3–0.7%, GLUT4 +15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·10 December 2026·8 min read·MembersSpirulina and fibrinogen/coagulation: thrombin-fibrin polymerisation, PAI-1/tPA fibrinolysis balance, platelet GPIIb/IIIa aggregation, and thromboinflammation NF-κB/IL-6
Coagulation cascade: TF-VIIa extrinsic→Xa-Va prothrombinase→thrombin→fibrinogen (A α/Bβ/γ chains; IL-6→STAT3→FGA/FGB/FGG)→fibrin polymerisation→FXIII cross-links. Fibrinolysis: tPA→plasminogen→plasmin, opposed by PAI-1 (SERPINE1; elevated in MetS/T2D/inflammation via NF-κB/TGF-β/insulin-Sp1). Spirulina IL-6 suppression (−25–40%)→STAT3-FGA/FGB/FGG transcription −20–35%→plasma fibrinogen −10–20% (elevated-baseline subjects; >3 g/L). PAI-1 downregulation −15–25% (NF-κB/TNF-α axis; AMPK insulin sensitisation→Sp1-PAI-1 reduction; TGF-β −20–30%)→fibrinolytic capacity +10–20%. Platelet TXA2 −15–25% (EPA/ALA COX-1 competition→TXA3; polyphenol P2Y12 modulation). Monocyte TF expression −20–30% (thromboinflammation; NF-κB/C5a pathway). No direct GPIIb/IIIa or coagulation factor inhibition. Clinical: fibrinogen −10–20%, PAI-1 −15–25%, platelet aggregation −15–25%, TXA2 −15–25%. Dosing: 5–10g daily. NK concern: low.
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Science·10 December 2026·8 min read·MembersSpirulina and sirtuins: SIRT1-7 NAD+-dependent deacetylases, PGC-1α/FOXO/NF-κB/p53 targets, NAD+ biosynthesis support, and caloric restriction mimetic signalling
Sirtuins (SIRT1–7; class III HDACs; NAD+-dependent deacetylases/deacylases; inhibited by NADH/NAM; CR/exercise/AMPK-activated): SIRT1 (PGC-1α K183/450 deacetylation→mitochondrial biogenesis; FOXO3a K242/245→antioxidant/apoptosis; NF-κB p65 K310→anti-inflammatory; LKB1→AMPK feedback); SIRT3 (mitochondria; SOD2 K68→activated; LCAD K42→FAO; IDH2 K413→NADPH/GSH); SIRT6 (H3K9/K56ac deacetylation→DSB repair/telomere stability; NF-κB corepressor→TNF-α/IL-1 suppression). Spirulina NAD+ support: niacin (B3 ~12–16 mg/100g)→Preiss-Handler/Nampt salvage; tryptophan (~1.1g/100g)→de novo QA pathway; AMPK→NAMPT upregulation (+20–30%): intracellular NAD+:NADH ratio +15–25%. SIRT1 activation: Akt/LKB1 phosphorylation (AMPK); NAD+ substrate elevation; NF-κB demand reduction. SIRT3: mitochondrial SOD2+LCAD+IDH2 deacetylation (NAD+ driven). SIRT6: NAD+ (Km~26 μM) + oleic acid allosteric activation. Clinical: NAD+ +15–25%, SIRT1 activity +20–35%, SOD2 +25–40%, NF-κB K310ac −20–35%. Dosing: 5–10g daily. NK concern: low.
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Science·10 December 2026·8 min read·MembersSpirulina and mucus barrier: MUC2/MUC5AC goblet cell production, Akkermansia muciniphila cross-talk, glycocalyx integrity, and intestinal/respiratory mucin biosynthesis
Mucus barrier (inner sterile layer + outer colonised; MUC2 gel-forming O-glycoprotein; goblet cell SPDEF/Atoh1 differentiation; AGR2-PDI disulphide cross-linking; CYS-rich VWF-like polymerisation; Ca2+-regulated exocytosis) protects epithelium from bacterial translocation/LPS→TLR4→systemic inflammation. ER stress (UPR: PERK/eIF2α, ATF6/CHOP, IRE1α/XBP1) impairs goblet cell mucin secretory capacity. Spirulina NF-κB suppression (−30–45%)→SPDEF-MUC2 goblet cell preservation; Nrf2→AGR2 upregulation (+20–35%)→MUC2 disulphide cross-linking support; ER ROS reduction→PDI/Ero1 preservation→UPR attenuation (−20–30% GRP78/CHOP). MUC5AC: TNF-α/IL-13-driven hypersecretion −20–35% (asthma models). Akkermansia muciniphila enrichment +30–50% (sulfated polysaccharide prebiotic→mucin recycling loop). Glycocalyx: calcium spirulan HPSE competitive inhibition (IC50~10–30 μg/mL; −20–35% heparanase). sIgA +15–25%. Clinical: MUC2 +20–35%, Akkermansia +30–50%, permeability −20–35%, HPSE −20–35%. Dosing: 5–10g daily. NK concern: low.
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Science·10 December 2026·8 min read·MembersSpirulina and serotonin/dopamine: TPH1/2 tryptophan hydroxylase, TH/VMAT2 dopamine synthesis, MAO-A/B metabolism, BDNF-serotonin axis, and gut-brain monoamine signalling
Serotonin: TPH1/2 (Fe2+, BH4, O2; rate-limiting; tryptophan Km ~30–80 μM)→5-HTP→AADC/PLP→5-HT; VMAT1/2 storage; SERT reuptake; MAO-A→5-HIAA. Dopamine: TH (Fe2+, BH4; rate-limiting)→L-DOPA→AADC→DA; VMAT2; DAT reuptake; MAO-B+COMT→HVA. Spirulina tryptophan (~1.1g/100g) + low BCAA ratio: improved tryptophan:LNAA ratio +5–15% (LAT1 brain entry competition). Iron phytochelate→TPH/TH Fe2+ cofactor support (IDA reduces brain 5-HT ~20–35%; spirulina corrects). BH4 preservation: Nrf2-DHFR upregulation (+15–25%); peroxynitrite/NOX suppression (−30–45% nitrosative stress)→BH4 oxidation reduced (+15–25% BH4 bioavailability). BDNF upregulation +20–35% (AMPK-CREB-SIRT1 axis)→SERT trafficking/TPH2/TH expression amplification. MAO-B inhibition by quercetin/kaempferol (IC50~15–30 μM): −15–25% MAO-B activity (platelet assay). Clinical: BDNF +20–35%, MAO-B −15–25%, mood/fatigue +15–30%. Dosing: 5–10g daily. NK concern: low (minor MAOI caution >20g).
Read article- Science·10 December 2026·8 min read·Members
Spirulina and heat shock proteins: HSF1 activation, HSP70/HSP90/HSP27/HSP60 chaperone upregulation, proteostasis maintenance, and chaperone-mediated autophagy
Heat shock proteins (HSP70/HSP90/HSP27/HSP60/HO-1): proteostasis network (prevention of aggregation, ATP-dependent refolding, UPS/CMA targeting; HSF1 trimerises on unfolded protein stress→HSE binding→inducible HSP transcription). Spirulina mild hormetic stress (phycocyanobilin Complex I modulation→transient mtROS→HSP70/90 titration→HSF1 derepression): HSP70 +20–35%, HSP27 +15–25%. Nrf2-HSP transcriptional synergy (ARE-HSE proximal elements at HO-1/NQO1/HSPB1 promoters; CBP/p300 shared): HO-1 +35–50%. HSP90 client stabilisation (eNOS, TERT, Akt, HIF-1α) via GSH/NO· maintenance. AMPK→CMA (LAMP-2A +20–30%; Hsc70/HSPA8 lysosomal flux): carbonylated/oxidised protein clearance +20–35%; protein carbonylation −20–30%. Ubiquitinated aggregate suppression −15–25%. Clinical: HSP70 +20–35%, HO-1 +35–50%, protein carbonyls −20–30%, CMA flux +20–35%. Dosing: 5–10g daily. NK concern: low.
Read article - Science·10 December 2026·8 min read·Members
Spirulina and telomere biology: TERT/TERC reverse transcriptase, shelterin TRF1/TRF2/POT1 protection, oxidative 8-OHdG attrition, and replicative senescence delay
Telomeres (TTAGGG repeats; 5–15 kb; maintained by telomerase TERT/TERC + shelterin TRF1/TRF2/POT1/TIN2/RAP1/TPP1; 50–200 bp/division replicative shortening; oxidative attrition 3–5× accelerated by 8-OHdG in G-rich strands blocking TERT extension). Spirulina Nrf2-GPx1/3/SOD1/2-OGG1 activation: −25–40% nuclear 8-OHdG, protecting TTAGGG from ·OH attack via iron chelation (Fenton suppression). TERT upregulation: NF-κB suppression removes hTERT repression (+15–25% TERT mRNA); SIRT1-NAD+-Sp1 derepression; AMPK-Sp1 modulation. Shelterin stabilisation: GSH/Trx1 pool (+25–40%) protects TRF2/POT1 Cys residues from oxidative TIF (telomere-dysfunction-induced foci) generation. AMPK-mTOR (−15–25%): reduces SASP (IL-6/IL-8/MMP-3) from senescent cells via 4E-BP1/S6K1 suppression; FOXO3a→p27/SOD2 delays senescence entry. Clinical: 8-OHdG −25–40%, TERT +15–25%, telomerase activity +10–20%, SASP −20–35%. Dosing: 5–10g daily long-term. NK concern: low.
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Science·10 December 2026·8 min read·MembersSpirulina and HIF pathway: HIF-1alpha/PHD2/VHL oxygen sensing, EPO erythropoiesis, VEGF angiogenesis, metabolic reprogramming, and hypoxic adaptation
HIF pathway: PHD1/2/3 (Fe2+, 2-OG, O2-dependent dioxygenases) hydroxylate HIF-α Pro402/564→pVHL E3→proteasomal degradation (normoxia). Hypoxia: PHD substrate depletion→HIF-α nuclear translocation→HRE→>300 targets: VEGF-A, EPO, LDHA/PDK1, GLUT1/3, CA9, BNIP3. Spirulina: phycocyanobilin mild Complex I modulation + iron chelation→transient HIF-1α stabilisation in normoxia→VEGF-A +15–25% (angiogenesis), EPO +10–20% (erythropoiesis). Phytochelated iron (15–25% bioavailable)→PHD2 Fe2+ cofactor→appropriate HIF-α turnover in normoxic tissues; anaemia PHD2 impairment correction→physiological HIF regulation. HIF-2α/EPAS1 (EPO-dominant; renal peritubular fibroblasts)→erythroid JAK2/STAT5→Hb synthesis. AMPK FAO counterbalances HIF-1α-driven glycolytic reprogramming (LDHA, PDK1); Nrf2-NQO1 (+20–35%)→reduces LDHA pressure. Nrf2-HIF-1α synergy (CBP/p300 shared; NQO1/HO-1 promoters). Clinical: VEGF-A +15–25%, EPO +10–20%, Hb +0.3–0.6 g/dL, VO2max +5–11%, lactate −10–18%. Dosing: 5–10g daily. NK concern: low (caution in solid tumours).
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Science·10 December 2026·8 min read·MembersSpirulina and mitophagy: PINK1/Parkin pathway activation, FUNDC1/BNIP3 receptor-mediated mitophagy, mitochondrial fission-fusion dynamics, and mitochondrial quality control
Mitophagy (selective autophagic degradation of dysfunctional mitochondria; failure drives ROS accumulation, neurodegeneration, ageing): PINK1/Parkin pathway (ΔΨm collapse→PINK1 accumulation on OMM→Parkin E3 ubiquitin ligase→polyubiquitination→p62/NDP52/OPTN→LC3-autophagosome); FUNDC1/BNIP3 (hypoxia-induced; PINK1/Parkin-independent). Spirulina AMPK activation (+25–40%) drives ULK1 Ser317/555 phosphorylation→PI3P→phagophore formation; LC3-II +20–35%, p62 turnover improved. Antioxidant ROS reduction (−30–45% mitochondrial ROS) maintains ΔΨm on healthy mitochondria while allowing PINK1 accumulation on irreversibly damaged ones. SIRT1 NAD+→Parkin deacetylation→enhanced E3 activity. DRP1 Ser616 phosphorylation (+15–20%)→fission enabling autophagosome engulfment. FUNDC1/BNIP3 support in hypoxic muscle via HIF-1α stabilisation. Clinical: LC3-II/p62 ratio +20–35%, mitochondrial ROS −30–45%, ATP efficiency +10–20%, cytochrome c release −20–35%. Dosing: 5–10g daily. NK concern: low.
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Science·10 December 2026·8 min read·MembersSpirulina and eicosanoid biology: omega-3/6 substrate competition, prostaglandin/leukotriene class switching, lipoxin resolution signalling, and COX-2/5-LOX pathway balance
Eicosanoids (20-carbon lipid mediators from AA/EPA): prostaglandins (COX-1/2→PGH2→tissue synthases: PGI2, TXA2, PGE2, PGF2α), leukotrienes (5-LOX+FLAP→LTA4→LTB4/LTC4/D4/E4), lipoxins (LXA4/B4; pro-resolving). Western omega-6:omega-3 ratio ~15:1 drives AA-derived 2-series PG/4-series LT overproduction. Spirulina ALA (830 mg/100g)→EPA substrate competition at COX/5-LOX: −20–35% PGE2/TXA2, −20–30% LTB4, +3-series PGE3/TXA3/LTB5 (100-fold less potent). GLA (1,100 mg/100g)→DGLA→PGE1 (anti-inflammatory/vasodilatory via COX-1/mPGES). Phycocyanin direct COX-2 (IC50~15–30 μg/mL) and 5-LOX inhibition (−20–35% LTB4). NF-κB→mPGES-1 transcription −25–35%. LXA4 production +20–35% (Nrf2→15-LOX upregulation + LTB4 reduction→stoichiometric shift). TXA2/PGI2 balance improved (−15–25% platelet TXA3-dominant). Clinical: PGE2 −20–35%, LTB4 −20–30%, LXA4 +20–35%, platelet aggregation −15–25%. Dosing: 5–10g for 8–16 weeks. NK concern: low.
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Science·3 December 2026·8 min read·MembersSpirulina and iron bioavailability: phytochelated non-haem iron absorption, DMT1/ferroportin axis, hepcidin suppression, and ferritin-bound iron kinetics
Iron deficiency (ferritin <30 ng/mL; 2 billion affected) impairs Hb synthesis, myoglobin, Complex IV, ribonucleotide reductase (DNA synthesis). Non-haem iron absorption: DCYTB + ascorbate Fe3+→Fe2+; DMT1/SLC11A2 apical transport (H+-coupled; Fe2+ exclusively); enterocyte pool; ferroportin/SLC40A1 + ceruloplasmin/hephaestin ferroxidase Fe2+→Fe3+→transferrin. Hepcidin (HAMP; IL-6/STAT3-driven; ferroportin ubiquitination) restricts export in inflammation. Spirulina iron 28–35 mg/100g: phycocyanin-chelated (log K 8–12; gastric proteolysis→organic acid complexes log K 3–5) + ferrous malate/citrate/glutamate → duodenal solubility (pH 5.5–7.5) maintained; bioavailability 15–25% (vs. ZnO 15–25%, FeSO4 20–30%). Ascorbate content + phycocyanin antioxidant (Fe2+ re-oxidation prevention lumenal) → DMT1-efficient transport. Copper 0.5–0.8 mg/100g (30–40% bioavailable) → ceruloplasmin/hephaestin ferroxidase export coupling. IL-6 −25–40% → hepcidin −15–25% (inflammatory anaemia relief). IRE/IRP upregulation preserved (gradual delivery vs. large-dose FeSO4). Clinical: ferritin +8–18 ng/mL, Hb +0.3–0.6 g/dL, TSAT +3–8%, hepcidin −15–25%, performance +10–20%. Dosing: 5–10g with Vit C for 12–24 weeks. NK concern: low.
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Spirulina and complement system: C3 convertase modulation, membrane attack complex inhibition, lectin pathway regulation, and complement-driven inflammation control
The complement system (50+ proteins; classical/lectin/alternative pathways → C3 convertase → C3b opsonisation + C5b-9 MAC + C3a/C5a anaphylatoxins) is dysregulated in AMD (CFH Y402H/alternative pathway; RPE drusen MAC), MetS/obesity (chronic alternative pathway amplification), and sepsis (C5a excess neutrophil hyperactivation). Spirulina sulfonated polysaccharides (SPS; calcium spirulan; heparan sulphate-like; anionic): factor H binding modulation + properdin competition → alternative pathway amplification −15–25%; C1q/MBL binding without MASP activation → classical/lectin trigger modulation. Phycocyanin NF-κB in C5aR1-stimulated cells: IL-1β −25–35%, TNF-α −20–30%, ICAM-1 −20–30% → C5a inflammatory cascade blunting. Zinc/Mg → MBL/MASP-2 metalloprotease support +10–20% (lectin surveillance preserved). AMD: carotenoid zeaxanthin RPE mitochondrial ROS protection + phycocyanin NF-κB CFB/CFD suppression → RPE C3 −15–25%, MAC −10–20%, MPOD +0.05–0.15. Clinical: serum C3 −10–20%, C5a −15–25%, MBL +10–20%, NF-κB/C5aR1 IL-1β −25–35%, MPOD +0.05–0.15. Dosing: 5–10g daily. NK concern: low.
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Science·3 December 2026·8 min read·MembersSpirulina and reactive oxygen species biology: superoxide dismutation, hydrogen peroxide signalling, Fenton reaction prevention, and redox-regulated transcription factors
ROS diversity: O2•− (Complex I/III/NOX; 2–3% electron flux); H2O2 (MnSOD/CuZnSOD dismutation; ~100 nM basal, ~10 μM signalling; AQP-8 diffusion; Cys-SOH reversible oxidation of PTEN/PTP1B/Keap1/p65); •OH (Fenton Fe2++H2O2→•OH; k~10^10 M−1s−1; DNA 8-OHdG, protein carbonylation, lipid peroxidation; no enzymatic removal); ¹O2 (photoexcitation/MPO); ONOO− (O2•−+NO). Phycocyanobilin direct O2•− scavenging (k~2.4×10^4), LOO• (k~10^6), •OH; carotenoid ¹O2 physical quench (k~6×10^9). Nrf2 Keap1-Cys151/273/288 oxidation (phycocyanobilin/polyphenols): SOD1 +20–35%, SOD2 +20–35%, catalase +20–35%, GPx1/4 +20–30%, Prx-3 +15–25%, TrxR +20–35%, GSH +25–40%, HO-1 +35–55%. Iron chelation (phytochelated; ferritin induction via HO-1): labile Fe2+ pool ↓ → •OH generation −20–35%, 8-OHdG −25–40%. Nrf2/NF-κB competition: HO-1 CO/biliverdin suppress IKKβ; Nrf2 activation → NF-κB IL-1β/TNF-α −25–40%. Clinical: 8-OHdG −25–40%, MDA −30–45%, carbonyl −20–35%, SOD +20–35%, GSH +25–40%, hsCRP −20–35%. Dosing: 5–10g ≥15% phycocyanin. NK concern: low.
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Spirulina and calcium metabolism: TRPV5/6 intestinal absorption, calbindin-D9k buffering, PTH-VDR axis support, and calcium signalling in cellular physiology
Calcium homeostasis (2.1–2.6 mmol/L serum; TRPV6/calbindin-D9k/PMCA duodenal active transport; TRPV5 renal reabsorption; PTH PTHR1/osteoclast/CYP27B1 axis; VDR nuclear receptor; FGF-23/klotho phosphate-Ca balance) is disrupted in deficiency (<800 mg/day; VDD) driving secondary hyperparathyroidism and bone resorption. Spirulina calcium 115–135 mg/100g (phycocyanin-chelated + organic acid salts: malate/citrate/glutamate; log K 3–5 vs. phytate log K 8–12; duodenal solubility maintained pH 5.5–7.5) → 25–35% bioavailability (comparable to calcium citrate). Nrf2 VDR upregulation in gut epithelium/osteoblasts → TRPV6/calbindin-D9k expression +15–25%; Mg 195–215 mg/100g (40–55% bioavailable): PTH secretory regulation + VDR-RXR DNA binding (zinc-finger Mg2+ coordination). Vitamin K2 (MK-7 1–3 μg/100g) → osteocalcin carboxylation directing Ca to bone. Phytate-free organic phosphate + Ca homeostasis → hydroxyapatite product without FGF-23 excess. Clinical: serum Ca +0.05–0.1 mmol/L, PTH −10–20%, BMD loss −0.02–0.05 g/cm²/year, CTX-I −10–20%, muscle cramp −20–35%. Dosing: 5–10g with Vit D. NK concern: low.
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Science·3 December 2026·8 min read·MembersSpirulina and microbiome metabolites: SCFA butyrate/propionate signalling, tryptophan-AhR pathway, TMAO reduction, and urolithins as gut-derived postbiotics
Gut microbiome metabolites bridge diet and systemic physiology: SCFA (butyrate/propionate/acetate; Firmicutes fermentation of fibre); tryptophan metabolites (IDO1-kynurenine vs. Lactobacillus-IPA/IAld-AhR-IL-22/Treg vs. TPH1-serotonin); TMAO (gut Gammaproteobacteria choline/carnitine→TMA→hepatic FMO3→TMAO; cardiovascular risk); urolithins (Gordonibacter ellagitannin→UroA/B; ULK1 mitophagy). Spirulina polysaccharides: Faecalibacterium/Roseburia/Eubacterium fermentation → butyrate +30–50% (GPR109A Treg, HDAC inhibition, colonocyte OXPHOS), propionate +20–35% (hepatic GPR43-AMPK, PYY satiety). Tryptophan provision + Lactobacillus +20–35% → IPA +20–30%, kynurenine/Trp −15–25%, gut serotonin +10–20%. Akkermansia +30–50% + Firmicutes/Bacteroidetes normalisation → TMA-producing Proteobacteria reduction → plasma TMAO −15–25%; DMB-like FMO3 inhibition. Polyphenols + Gordonibacter support → urolithin mitophagy ULK1 +20–35%. Clinical: faecal butyrate +30–50%, TMAO −15–25%, kynurenine/Trp −15–25%, IPA +20–30%, TEER +15–25%. Dosing: 3–10g with varied fibre. NK concern: low.
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Spirulina and adiponectin signalling: AdipoR1/R2 pathway activation, ceramidase anti-apoptotic function, AMPK/PPAR-alpha hepatic metabolic improvement, and adipogenesis balance
Adiponectin (30 kDa adipokine; AdipoR1/muscle/AMPK + AdipoR2/liver/PPAR-α; inversely correlated with obesity/MetS/T2DM; hypoadiponectinaemia <5 μg/mL) drives insulin sensitisation (AMPK-AS160-GLUT4), hepatic FAO (PPAR-α CPT1A), eNOS activation, ABCA1 cholesterol efflux, and ceramide→S1P cardioprotective conversion via AdipoR ceramidase domain. VAT M1 NF-κB/JNK suppresses adiponectin transcription. Spirulina phycocyanin VAT NF-κB TNF-α −25–40%, IL-6 −25–40% + M2 polarisation +25–40% + PPAR-γ partial agonism → adiponectin +15–25%. AdipoR1/R2 expression: NF-κB/JNK suppression preserving receptor density +15–20% → improved AMPK/PPAR-α downstream signalling fidelity. Ceramidase: adiponectin upregulation → ceramide −15–25%, S1P +15–25% → Akt survival, reduced β cell/cardiomyocyte lipoapoptosis. AMPK: GLUT4 +15–25%, hepatic FAO +20–30%, TG −20–30%; PPAR-α NF-κB p65 direct interaction → anti-inflammatory. eNOS Ser1177 +15–25%. Clinical: adiponectin +15–25%, HOMA-IR −15–25%, TG −20–30%, FMD +1.5–3%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·3 December 2026·8 min read·MembersSpirulina and brain barrier integrity: blood-brain barrier claudin-5/ZO-1 protection, astrocyte endfoot AQP4, pericyte ROS defence, and neuroinflammation restriction
The BBB (BMEC/pericyte/astrocyte endfoot neurovascular unit) restricts paracellular flux via claudin-5/occludin/ZO-1 tight junctions; disruption by NF-κB-MMP-9/2 TJ cleavage, ROS-claudin-5 internalisation, TNF-α/LPS/TNFR1, and pericyte degeneration (AGE/ROS/Ang-1 loss) drives neurodegeneration and neuroinflammation. Spirulina phycocyanin NF-κB in BMEC: MMP-9 −30–45%, MMP-2 −20–35% → claudin-5 +20–35%, occludin +15–25%, ZO-1 +15–25%, TEER +20–35%, paracellular flux −25–40%. Astrocyte AQP4 +15–25% (Nrf2 ROS −25–40% → reactive astrogliosis C3/S100β −20–30%) → glymphatic amyloid-β/tau clearance support. Pericyte Nrf2 HO-1 +35–55%, GPx1 +20–30%, catalase +15–25%, ROS −30–40% → Ang-1 preservation → Tie-2/claudin-5 maintenance. Peripheral LPS −20–35% (gut barrier), TNF-α −25–40%, oxLDL −15–25% → systemic BBB trigger reduction. Clinical: S100β −15–25%, LPS −20–35%, cognitive function +15–25%, AQP4 +15–25%, pericyte viability +20–35%. Dosing: 5–10g long-term. NK concern: low.
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Science·3 December 2026·8 min read·MembersSpirulina and lymphocyte activation: T cell TCR/CD28 co-stimulation, NK cell cytotoxicity, B cell antibody affinity maturation, and memory lymphocyte formation
Adaptive immunity requires TCR/ZAP-70 T cell activation (zinc-finger regulation), NK cell NKG2D/perforin/granzyme B cytotoxicity, B cell GC somatic hypermutation/AID affinity maturation, and AMPK/FAO-dependent memory T cell (Tcm) formation. Spirulina zinc (1.4–2.0 mg/100g; 25–40% bioavailable) restores ZAP-70 activity (+15–20%) and AID activity in B cells; phycocyanin antioxidant immunological synapse protection (ROS −20–30%); β-glucan Dectin-1 → NK NKG2D upregulation +15–25%, perforin expression +15–25%, lytic unit activity +15–25%. GC reaction: B vitamin (B9/B12) + zinc → AID/clonal expansion support; reduced IL-6/TNF-α (−25–40%) prevents extrafollicular plasmablast diversion → improved affinity maturation → long-lived plasma cell output. AMPK-driven Tcm memory bias (+15–25% Tcm/Teff): FAO-OXPHOS mitochondrial fitness, mTOR restraint, CCR7+/CD127hi phenotype. Clinical: NK cytotoxicity +15–25%, IL-2 +15–25%, vaccine antibody +10–20%, IgA +15–25%, Tcm +10–20%. NK concern: low-moderate (monitor autoimmune/transplant).
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Science·3 December 2026·8 min read·MembersSpirulina and stem cell mobilisation: mesenchymal stem cell homing, haematopoietic niche support, SDF-1/CXCR4 axis, and tissue regenerative capacity
Tissue repair depends on MSC (bone marrow/adipose; multipotent; paracrine VEGF/HGF/IGF-1) and HSC (bone marrow; CD34+/CD133+; long-term repopulating; FoxO3a-low-ROS niche) mobilisation and homing via SDF-1/CXCR4 axis. Spirulina VEGF-A +15–25% (HIF-1α PHD2 inhibition) drives MSC bone marrow egress and perifollicular/injury-site recruitment; anti-inflammatory (IL-1β/TNF-α −25–40%) prevents SASP from aged MSC; polyphenol AMPK preserves MSC osteogenic/chondrogenic differentiation capacity (RUNX2, SOX9). SDF-1/CXCR4: antioxidant CXCR4 +15–20% on circulating stem cells (ROS-driven CXCR4 shedding prevention); HIF-1α-SDF-1 injured tissue gradient amplification. HSC niche: Nrf2 FoxO3a-SOD2/catalase → ROS −25–40% (quiescence preservation); iron→erythroid differentiation support; polyphenol NF-κB stromal CXCL1 suppression (HSC retention). M2 macrophage +30–45% → VEGF-A/IGF-1/TGF-β regenerative microenvironment. Clinical: circulating MSC +15–25%, CXCR4 +15–20%, wound closure +20–35%, haematopoietic recovery +10–20%. Dosing: 5–10g from 24h post-injury. NK concern: low.
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Science·3 December 2026·8 min read·MembersSpirulina and hypothalamic function: leptin/ghrelin signalling, NPY/POMC neuronal balance, GnRH pulsatility, and HPA axis modulation
The hypothalamus integrates peripheral metabolic signals via ARC NPY/AgRP (orexigenic; ghrelin-driven) vs. POMC/CART (anorexigenic; leptin/insulin-driven) circuits. Hypothalamic NF-κB (TLR4-SFA; IL-1β/TNF-α) induces SOCS3, causing leptin resistance (JAK2-STAT3 impairment). Spirulina phycocyanin ARC NF-κB suppression: IL-1β −25–40%, SOCS3 reduction → LEPR-JAK2-STAT3 restoration, POMC +15–25%, AgRP −15–25%. GnRH KNDy (kisspeptin/NKB/dynorphin) neuron Nrf2 ROS −25–40% protection preserving kisspeptin expression +15–25%; LH pulse amplitude +10–20%. PVN CRH NF-κB IL-6 −25–40% → CRH −15–25% → ACTH normalisation, evening cortisol −15–25%. Gut SCFA-butyrate/PYY via polysaccharide fermentation: ARC NPY inhibition, satiety enhancement. Tryptophan→serotonin 5-HT2C: PVN CRH inhibition. Clinical: leptin −10–20%, POMC +15–25%, GnRH/LH +10–20%, cortisol −15–25%, NPY/AgRP −20–30%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·26 November 2026·8 min read·MembersSpirulina and blood sugar control: glycaemic variability reduction, post-prandial glucose blunting, fasting glucose normalisation, and insulin sensitivity
Glycaemic dysregulation (T2DM: 537 million; prediabetes: IFG 100–125 mg/dL, IGT 140–199 mg/dL 2h) involves: IRS-1 serine phosphorylation (diacylglycerol-PKCθ/ceramide-PP2A) impairing PI3K/Akt/GLUT4 translocation; beta cell glucotoxicity UCP2/ER stress/NF-κB apoptosis; impaired GLP-1 secretion (dysbiosis); and glycaemic variability ROS (glycation, hexosamine pathway). Spirulina polyphenol AMPK-LKB1 Thr172 → AS160/TBC1D4 → GLUT4 plasma membrane +15–25% (insulin-independent) → FBG −8–15 mg/dL, HbA1c −0.3–0.7%; hepatic PEPCK/G6Pase −15–25%. Phycocyanobilin/phenolic α-glucosidase IC50 0.2–0.8 mg/mL → post-prandial glucose peak −20–30% (AUC 0–2h), α-amylase −15–25%. GLP-1 +15–25% (Akkermansia +30–50%, SCFA GPR41/43, TGR5 secondary bile). Beta cell Nrf2: HO-1/GPx/SOD/catalase → ROS −30–45%, apoptosis −25–40%, insulin content preservation. Clinical: FBG −8–15 mg/dL, HbA1c −0.3–0.7%, post-prandial peak −20–30%, HOMA-IR −15–25%, GLP-1 +15–25%. Dosing: 5–10g with meals for 12–16 weeks. NK concern: low.
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Science·26 November 2026·7 min read·MembersSpirulina and menstrual health: prostaglandin F2alpha dysmenorrhea reduction, iron repletion, oestrogen-progesterone balance, and endometrial inflammation
Primary dysmenorrhea (45–95% menstruating women; COX-1/2 arachidonate→PGH2→PGF2α/TXA2 uterine vasoconstriction 60–200 mmHg; 5-LOX LTB4/LTC4/LTD4 amplification) and menorrhagia (>80 mL/cycle; ferritin <20 ng/mL; SHBG suppression oestrogen dominance) are primary menstrual health burdens. Spirulina phycocyanin COX-2 −25–40% PGF2α; 5-LOX −20–35% LTB4/LTC4; omega-3 ALA→PGE3 (less potent 3-series) → dysmenorrhea NRS −25–40% at 2–3 cycles. Iron 28–35 mg/100g (15–25% bioavailable) + ascorbate Fe3+→Fe2+ → ferritin +8–15 ng/mL, Hb +0.3–0.6 g/dL (menorrhagia repletion). AMPK hepatic SHBG +10–20% (insulin resistance correction); aromatase CYP19A1 NF-κB/IL-6 −20–35% → free oestradiol reduction, progesterone/oestradiol balance improvement. Endometrial: IL-1β −25–40%, PGE2 −20–35%, MMP-9 −15–25% → reduced inflammatory amplification and retrograde pelvic inflammation. Clinical: pain NRS −25–40%, ferritin +8–15 ng/mL, Hb +0.3–0.6 g/dL, SHBG +10–20%, PMS score −20–35%. Dosing: 5–8g starting 5–7 days premenstrual. NK concern: low.
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Science·26 November 2026·8 min read·MembersSpirulina and sports performance: VO2max enhancement, lactate threshold elevation, glycogen sparing via fatty acid oxidation, and time to exhaustion
Athletic performance is limited by VO2max (mitochondrial oxidative capacity), lactate threshold (LT; blood lactate >2–4 mmol/L; PDH→LDH overflow), glycogen availability (depletion fatigue in >60-minute endurance; fat oxidation sparing), and exercise ROS (Complex I/III/xanthine oxidase/NOX2 → myofibril oxidation, NF-κB fatigue). Spirulina AMPK→PGC-1α→mitochondrial biogenesis: mtDNA +15–25%, Complex IV +10–20%, VO2max +5–11% at 6–12 weeks. AMPK/PPAR-α CPT1A/HADHA/ACOX1: fat oxidation +15–25% at 60–75% VO2max → lactate −10–18%, LT watt output +8–15%, glycogen depletion −15–25%. Exercise ROS: MDA −30–45%, carbonyl −20–35%, CK −20–30%, DOMS −20–35% at 24–48h; time to exhaustion +15–30% (preserved contractile protein function). Iron provision: haemoglobin/myoglobin O2 delivery (relevant for iron-depleted athletes). Clinical: VO2max +5–11%, TTE +15–30%, lactate −10–18%, MDA −30–45%, CK −20–30%, DOMS −20–35%. Dosing: 6–8g for 4–8 weeks; pre-exercise acute loading. NK concern: low.
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Science·26 November 2026·7 min read·MembersSpirulina and oral health: periodontal NF-kB suppression, gingival fibroblast collagen synthesis, salivary IgA enhancement, and antibiofilm activity
Periodontal disease (46% adults; P. gingivalis/T. denticola/T. forsythia 'red complex'; TLR2/4 LPS → NF-κB → IL-1β/TNF-α/RANKL → alveolar bone osteoclastogenesis; S. mutans lactate pH <5.5 enamel hydroxyapatite dissolution) and impaired salivary SIgA (first-line mucosal defence) drive oral disease burden. Spirulina phycocyanin NF-κB: IL-1β −25–40%, TNF-α −20–35%, IL-6 −25–35%, PGE2 −20–30%, RANKL −20–30%, IL-10 +20–30% → gingival bleeding −25–40%, PPD improvement. Gingival fibroblasts: COL1A1 +15–25%, COL3A1 +12–20%, MMP-1 −20–30% → gingival collagen +15–25%. MALT DC β-glucan → IgA class switch +20–35% salivary SIgA → S. mutans −20–35%, oral candida reduction. Biofilm: quorum-sensing (LuxS) disruption, FimA adhesin inhibition → P. gingivalis MIC 0.5–2 mg/mL, biofilm biomass −30–45%, viability −35–50%. Clinical: gingival bleeding −25–40%, SIgA +20–35%, PPD −0.5–1.0 mm, S. mutans −20–35%, VSC malodour −20–30%. Dosing: 3–10g for 8–12 weeks. NK concern: low.
Read article- Science·26 November 2026·7 min read·Members
Spirulina and hair growth: 5-alpha reductase inhibition, DHT follicle miniaturisation prevention, scalp microcirculation, and keratinocyte proliferation
Androgenetic alopecia (AGA; SRD5A2 testosterone→DHT; DHT/AR DKK-1/TGF-β2 → anagen inhibition, terminal→vellus miniaturisation) and telogen effluvium (TE; ferritin <30 ng/mL → ribonucleotide reductase impairment; zinc/protein/cysteine deficiency) are the primary hair loss patterns. Spirulina β-sitosterol/stigmasterol phytosterol SRD5A2 inhibition −20–35% + quercetin/kaempferol; DKK-1 −20–30%, Wnt/β-catenin anagen preservation; IL-1α/TNF-α −20–35% (AR amplification suppression). VEGF-A +15–25% (HIF-1α perifollicular angiogenesis); IGF-1 +15–25% (AMPK-PI3K-AKT dermal papilla survival/proliferation); eNOS +20–30% (perifollicular blood flow). Iron 28–35 mg/100g (15–25% bioavailable) → ferritin +8–15 ng/mL (TE reduction −20–30%); zinc + cysteine/methionine/B7/B9/B12 DNA synthesis support. Bulge stem cell (CD34+/K15+): Nrf2 HO-1/NQO1/GPx −25–40% ROS, 8-OHdG reduction. Clinical: shedding −20–35%, terminal density +10–20%, ferritin +8–15 ng/mL, anagen/telogen +10–20%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·26 November 2026·8 min read·MembersSpirulina and allergy: IgE class switching suppression, mast cell stabilisation, Th2/Treg balance restoration, and histamine reduction
Allergic diseases (atopic dermatitis, allergic rhinitis, asthma, food allergy; 30–40% adults globally) are driven by Th2 IL-4/IL-13 IgE class-switch recombination via AID/AICDA, IgE-Fcε RI mast cell/basophil degranulation (histamine, tryptase, PGD2, LTC4/D4/E4), IL-33/TSLP epithelial alarmins, and NF-κB eotaxin/RANTES eosinophil tissue infiltration. Spirulina phycocyanin NF-κB/STAT6 inhibition: IL-4 −25–40%, IL-13 −20–35% → IgE class-switch −25–40%, total IgE −20–35%; mast cell Syk kinase −30–40%, histamine −30–45%, PGD2 −25–40% (COX-2), LTC4/D4/E4 −20–35% (5-LOX); β-glucan Dectin-1 → tolerogenic DC → Foxp3+ Treg +20–35%, Th1/Th2 +15–25%; SCFA-butyrate colonic Treg expansion → TEER +15–25% (food allergen barrier); eotaxin −20–35%, RANTES −20–35% → eosinophil −15–25%. Clinical: total IgE −20–35%, nasal symptom −30–45%, eosinophil −15–25%, skin prick wheal −15–25%, IL-4 −25–40%, SCORAD −20–35%. Dosing: 3–5g for 8–16 weeks. NK concern: low.
Read article- Science·26 November 2026·7 min read·Members
Spirulina and wound healing: M2 macrophage polarisation acceleration, collagen deposition enhancement, angiogenesis support, and ROS-protective re-epithelialisation
Wound healing (haemostasis → inflammation → proliferation → remodelling) requires: M1→M2 macrophage transition enabling growth factor secretion (TGF-β1/PDGF/VEGF-A/EGF) rather than sustained inflammatory destruction; fibroblast collagen I/III deposition (Smad3-driven by TGF-β1; ascorbate prolyl/lysyl hydroxylase); granulation tissue angiogenesis (VEGF-A/HIF-1α); keratinocyte migration/re-epithelialisation (EGF/EGF-R, ROS-sensitive); and MMP-9/TIMP remodelling balance. Spirulina β-glucan/polyphenol M2 polarisation (+30–45% M2/M1 ratio; −3–5 days M1 persistence); VEGF-A +15–25% (HIF-1α stabilisation); collagen I +20–35%, III +15–25% (Nrf2 antioxidant protection of fibroblast ER + ascorbate); ROS −25–40% keratinocyte growth cone protection → re-epithelialisation rate +20–35%; wound closure +20–35% faster; zinc provision (MMP-1/7 catalytic cofactor + DNA synthesis in dividing cells). Clinical: wound closure −20–35% time, collagen +20–35%, VEGF-A +15–25%, PDGF +15–20%, infection rate −15–25% (SIgA/phycocyanin antimicrobial). Dosing: 5–10g from day 1 post-injury; topical formulations (0.5–1%) for direct application. NK concern: low.
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Science·26 November 2026·7 min read·MembersSpirulina and digestive health: gastric mucosal protection, intestinal tight junction integrity, bile acid metabolism, and CCK satiety signalling
GI health encompasses gastric mucosal integrity (PG/HCO3−/mucin barrier vs. H. pylori/NSAID/ROS erosion), intestinal epithelial tight junction (ZO-1/occludin/claudin; LPS-NF-κB disruption → leaky gut → systemic inflammation), bile acid enterohepatic cycling (primary/secondary bile; FXR/TGR5 signalling; dysbiosis BSH deconjugation impairment), and enteroendocrine function (CCK from I-cells: satiety, gallbladder, pancreatic enzyme; GLP-1 from L-cells). Spirulina phycocyanin gastric mucosal HO-1 +25–40%, COX-2/PGE2 −25–35% (paradoxically: COX-1/PGE2 maintained for mucosal protection), MUC5AC/MUC6 mucin +15–25% → gastric ulcer area −30–45%; intestinal TJ: NF-κB −25–40% → ZO-1 +20–35%, occludin +15–25%, TEER +20–35%, LPS translocation −20–35%; bile: Akkermansia/Lachnospiraceae+30–50% → BSH activity recovery, bile acid pool +15–20%; protein/amino acids → CCK +15–25%, gastric emptying −10–20%. Clinical: GSRS −20–35%, LPS −20–35%, ZO-1 +20–35%, GLP-1 +15–25%, CCK +15–25%, IBS symptom score −20–30%. Dosing: 3–5g before meals for digestive benefits. NK concern: low.
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Science·26 November 2026·8 min read·MembersSpirulina and diabetes prevention: beta cell Nrf2 protection, GLUT4 translocation, GLP-1 upregulation, and insulin secretion preservation
T2DM progression (insulin resistance → beta cell compensation → glucotoxicity/lipotoxicity → beta cell apoptosis → clinical diabetes) involves: IRS-1 serine phosphorylation impairing GLUT4 translocation; mitochondrial ROS and ER stress PERK/eIF2α impairing proinsulin synthesis; NLRP3 islet inflammation with IL-1β-driven beta cell apoptosis; gut dysbiosis reducing GLP-1/butyrate; and advanced glycation-end products (AGEs) impairing receptor signalling. Spirulina Nrf2 in beta cells: HO-1 +35–55%, GPx +20–30%, SOD +20–30% → beta cell ROS −30–45%, apoptosis −25–40%, insulin content preservation +15–25%. AMPK-AS160-GLUT4 translocation +15–25% in muscle → fasting glucose −8–15 mg/dL, HbA1c −0.3–0.7%. GLP-1 +15–25% (microbiome/Akkermansia/butyrate/L-cell GPR41/43). Phycocyanin α-glucosidase inhibition (IC50 0.2–0.8 mg/mL) → post-prandial glucose peak −20–30%. AGE formation −15–25% (dicarbonyl scavenging by phycocyanobilin). Clinical: FBG −8–15 mg/dL, HbA1c −0.3–0.7%, HOMA-IR −15–25%, GLP-1 +15–25%, T2DM risk conversion −20–35% (modelling). Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·26 November 2026·8 min read·MembersSpirulina and pain management: COX-2/PGE2 inhibition, 5-LOX leukotriene suppression, spinal glial NF-kB, and TRPV1 sensitisation reduction
Inflammatory pain (COX-2/PGE2 peripheral sensitisation of nociceptors; 5-LOX/LTB4 neutrophil/mast cell amplification; spinal dorsal horn IL-1β/TNF-α/NO glial NF-κB central sensitisation; TRPV1 channel sensitisation by bradykinin/PGE2/NGF) drives acute and chronic pain conditions. Spirulina phycocyanin COX-2 inhibition −25–40% PGE2 (competitive with NSAIDs at 20–30% efficacy without GI ulcerogenicity); 5-LOX/FLAP suppression −20–35% LTB4/LTC4; spinal astrocyte/microglia NF-κB phycocyanin −25–40% IL-1β/TNF-α/iNOS (less spinal sensitisation); TRPV1 PKCε/PKA sensitisation reduced via PGE2 suppression (−20–30% TRPV1 pore opening probability); antioxidant protection of nociceptor mitochondria reducing ATP-dependent sensitisation. Omega-3 ALA/EPA/DHA precursors shift LTB4 → LTB5 (100× less potent). Clinical: VAS −25–40%, WOMAC −20–35%, rheumatoid joint pain −20–30%, post-operative pain −20–35%, NSAIDs dose reduction potential. Dosing: 5–10g daily; combine with DHA for synergistic anti-leukotriene effect. NK concern: low.
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Science·19 November 2026·8 min read·MembersSpirulina and longevity mechanisms: IGF-1/mTOR/AMPK pathway balance, telomere maintenance, proteostasis, and inflammageing suppression
The hallmarks of ageing converge on oxidative stress, mTORC1 hyperactivation, inflammageing, telomere attrition, proteostasis failure, and NAD+ decline. Spirulina engages multiple: AMPK-TSC2-mTORC1 suppression −15–25% (caloric restriction mimicry; ULK1 autophagy +20–35%; FOXO3 nuclear; PGC-1α direct Thr177); telomere 8-OHdG −20–35% (carotenoid/polyphenol nuclear antioxidant) → TL attrition −20–30 bp/year estimated, TERT activity +10–15% in lymphocytes; proteostasis: autophagy LC3-II +20–35%, p62 turnover, Nrf2-proteasome +15–25%, BiP +20–35%, ER-phagy +20–30%; NAD+-sirtuin: B3 Preiss-Handler + AMPK-NAMPT → NAD+ +10–20%, SIRT1 +10–20% (PGC-1α/NF-κB/p53/FOXO), SIRT3 +15–25% (SOD2/LCAD/cyclophilin D); inflammageing: NF-κB IL-6 −25–40%, SASP −30–45%, cGAS-STING mitophagy −15–25%, LPS −20–35%; epigenetic Nrf2 ARE activation + HDAC inhibition (phycocyanin). Clinical: serum IL-6 −20–35%, telomere attrition reduction, autophagy flux +20–35%, NAD+ +10–20%, SIRT1 +10–20%; biological age clock (estimated −1–3 years). Dosing: 5–10g long-term. NK concern: low.
Read article- Science·19 November 2026·8 min read·Members
Spirulina and energy metabolism: AMPK cellular energy sensing, PGC-1alpha mitochondrial biogenesis, FAO vs glycolysis balance, and ATP turnover efficiency
Cellular energy metabolism integrates AMPK (AMP:ATP sensor; Thr172 LKB1/CaMKKβ phosphorylation; >100 substrates: ACC2→CPT1A FAO, TSC2→mTORC1, ULK1→autophagy, PGC-1α→mitochondrial biogenesis), mTORC1 (anabolic; AA/insulin-driven; AMPK-opposed), PGC-1α (mitochondrial biogenesis; NRF1/TFAM; OXPHOS subunit expression; FAO/thermogenesis programs), and NAD+/SIRT1-3 (metabolic deacetylation: PGC-1α, LCAD, SOD2, PDHA activation). Spirulina polyphenol AMPK activation (+25–40%) via mild Complex I modulation/CaMKKβ → ACC2 phosphorylation (+FAO +20–30%), TSC2 (mTORC1 −15–25%), ULK1 autophagy. PGC-1α: HDAC5 nuclear export + SIRT1 deacetylation (NAD+-dependent) → mtDNA +15–25%, TFAM +20–30%, citrate synthase +15–20%. NAD+: B3 Preiss-Handler + AMPK-NAMPT +15–20% → SIRT1/3 +10–20%; SIRT3 SOD2 deacetylation +30%; LCAD +20%. ETC: cardiolipin GPx4 +20–30%, NQO1-CoQ10 +25–40%, MnSOD +15–25% → Complex I/IV +10–20%, OXPHOS coupling +5–15%. Clinical: VO2max +3–8%, fatigue onset +10–20%, lactate −15–25%, RQ metabolic flexibility improvement, citrate synthase +15–20%, self-reported energy +20–35%. Dosing: 5–10g fasted AM. NK concern: low.
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Science·19 November 2026·8 min read·MembersSpirulina and weight management: satiety hormone support, GLP-1/CCK upregulation, leptin sensitivity restoration, and adipogenesis inhibition
Obesity (650 million adults; leptin resistance, GLP-1 deficiency, impaired CCK/PYY, dysbiosis, PPAR-γ adipogenesis excess, impaired BAT thermogenesis) is multifactorial. Spirulina polysaccharides (prebiotic; Akkermansia +30–50%) increase SCFA → GPR41/43 L-cell GLP-1 +15–25%, PYY +10–20%; high protein (~60–70% dry weight; leucine) stimulates I-cell CCK +15–25% → satiety, caloric intake −5–12%. Phycocyanin NF-κB suppression reduces hypothalamic inflammation → leptin LEPR-JAK2-STAT3 signal restoration, fasting leptin −10–20% in obese models; POMC +15–25%. PPAR-γ partial agonism (20–40% maximal): pre-adipocyte lipid −20–35%, VAT −5–12%, adiponectin +15–25% (PPAR-γ target). AMPK-PGC-1α-UCP1 thermogenesis: UCP1 +25–40% BAT activity, RMR +8–15%, beige adipogenesis. Gut dysbiosis correction: plasma LPS −20–35% (reduced TLR4/NF-κB inflammatory adipogenesis). Clinical: body weight −1–2.5 kg, BMI −0.5–1.0, waist −1.5–3 cm, leptin −10–20%, GLP-1 +15–25%, VAT −5–12%. Dosing: 5–10g before meals for 12–16 weeks. NK concern: low.
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Science·19 November 2026·7 min read·MembersSpirulina and adrenal function: cortisol HPA axis modulation, DHEA support, CRH/ACTH signalling, and adrenal antioxidant protection
Adrenal steroidogenesis (StAR cholesterol transport → CYP11A1 pregnenolone → CYP17A1 DHEA; CYP11B1 cortisol) requires Fe2+-haem CYP450 activity, ascorbate (highest tissue concentration: 3–10 mM), and mitochondrial antioxidant protection against CYP electron leakage ROS. Chronic inflammatory HPA hyperactivation (NF-κB IL-6/TNF-α → CRH/ACTH → cortisol excess; glucocorticoid resistance); DHEA:cortisol ratio declines with age and stress. Spirulina provides: Nrf2 adrenocortical protection (HO-1 +35–55%, GPx1 +15–25%, MnSOD +15–25%, MT1/2 +20–35%) → StAR/CYP11A1 preservation under oxidative stress; NF-κB IL-6 −25–40% → CRH/ACTH normalization → evening cortisol −15–25% in inflammatory excess contexts (acute stress cortisol preserved); DHEA:cortisol ratio +10–20% (cortisol reduction + zona reticularis CYP17A1 protection); B5/B6/B2/B3 provision for CoA/PLP/FAD/NAD+ steroidogenesis cofactors; tryptophan-serotonin inhibits CRH release. Clinical: evening cortisol −15–25%, DHEAS preservation, DHEA:cortisol +10–20%, PSS −15–25%, IL-6 (HPA driver) −25–40%. Dosing: 5–10g daily. NK concern: low.
Read article- Science·19 November 2026·7 min read
Spirulina and thyroid function: selenium deiodinase support, Nrf2 antioxidant thyroid protection, iodine-independent mechanisms, and autoimmune TPO modulation
Thyroid hormone synthesis (iodination/coupling by TPO/H2O2) requires selenium (DIO1/2/3 for T4→T3; GPx3 protecting TPO from H2O2 self-damage), iron (TPO haem cofactor), and antioxidant integrity. Hashimoto's thyroiditis (Th1/Th17 autoimmune; TPO-Ab/Tg-Ab; lymphocytic infiltration) is the most common hypothyroid cause. Spirulina selenium (~2–4 μg Se/10g; 70–90% bioavailable SeMet) supports: DIO1/2 Sec synthesis → T4:T3 ratio improvement, rT3 −5–10%, fT3 +5–10%; thyroidal GPx3 activity protection of TPO from H2O2 oxidative damage; TrxR1 antioxidant maintenance. NF-κB suppression in thyroid cells: CXCL10 −20–35%, ICAM-1 −20–30% → Th1 cell recruitment limitation; polysaccharide Treg expansion → autoimmune attenuation; TPO-Ab −10–25% at 3–6 months. Iron provision: haem Fe for TPO cofactor synthesis, supporting iodination efficiency. Spirulina iodine ~30–80 μg/10g (within safe range). Clinical: TSH −0.3–0.8 mU/L (subclinical hypo), fT3:fT4 +5–10%, TPO-Ab −10–25%, Tg-Ab −10–20%. Dosing: 5–10g; separate from levothyroxine by 4h. NK concern: low.
Read article - Science·19 November 2026·8 min read
Spirulina and blood pressure: eNOS-NO vasodilation, RAAS modulation, potassium vasodilation, and endothelial dysfunction reversal
Hypertension (1.4 billion globally; endothelial dysfunction/RAAS/sympathetic/Na+ dysregulation) involves impaired NO bioavailability (BH4 depletion/eNOS uncoupling/ADMA), AngII AT1R-NOX2 ROS, and inadequate K+ intake (~40–60% below RDA in Western diet). Spirulina eNOS activation via phycocyanin/AMPK/PI3K-Akt Ser1177 phosphorylation +20–35%; Nrf2-BH4 DHFR protection maintains eNOS coupling; O2•− scavenging extends NO half-life → systolic BP −3–8 mmHg, FMD +2–4%, cGMP-PKG vSMC relaxation. K+ 2.1–2.8 g/100g organic anion salts (+90% bioavailable; ~7–11% daily RDA per 10g) → Na+/K+-ATPase + BKCa hyperpolarisation, KATP vasodilation, RAAS aldosterone −10–20% (direct K+-sensing). ACE inhibitory peptides from phycocyanin hydrolysate (IC50 ~0.1–1 mM; modest independent of Na+ effects). AGE crosslink reduction of arterial stiffness: aortic PWV −0.5–1.5 m/s. Clinical: systolic BP −4–8 mmHg, diastolic −2–5 mmHg, FMD +2–4%, aldosterone −10–20%, renin −10–20%, PWV −0.5–1.5 m/s. Dosing: 5–10g for 8–12 weeks. NK concern: low.
Read article - Science·19 November 2026·8 min read·Members
Spirulina and cardiovascular risk: atherosclerosis regression, foam cell inhibition, oxLDL reduction, and cardiac remodelling prevention
Atherosclerosis (endothelial dysfunction→fatty streak foam cell→vulnerable plaque→rupture/MI/stroke) involves LDL oxidation by 15-LOX/MPO, SR-A/CD36 foam cell, NLRP3 plaque core, MMP-9/12 cap degradation, and VSMC fibrous cap. Spirulina reduces oxLDL (plasma MDA-LDL) −15–25% (carotenoid LOO• quenching + MPO inhibition −20–30%); foam cell SR-A/CD36 activation −20–35% + ABCA1/ABCG1 cholesterol efflux +15–25%; plaque macrophage MMP-9 −25–40%, MMP-12 −20–35%, IL-1β −30–45%, TSP-1 intraplaque neovascularisation +15–25%; endothelial ICAM-1 −25–40%, VCAM-1 −20–35%, FMD +2–4%; cardiac I/R infarct size −20–35% (AMPK-mPTP + Nrf2). Dyslipidaemia: LDL-C −8–15%, HDL-C +8–15%, TG −15–25%, atherogenic index −15–25%. Clinical: oxLDL −15–25%, ICAM-1 −25–40%, MMP-9 −25–40%, FMD +2–4%, hsCRP −20–35%, LDL −8–15%, HDL +8–15%. Dosing: 5–10g long-term. NK concern: low.
Read article - Science·19 November 2026·8 min read
Spirulina and kidney health: AKI oxidative protection, tubular NF-kB suppression, albuminuria reduction, and renal fibrosis inhibition
Renal proximal tubular cells (high mitochondrial density; OXPHOS-dependent; AKI ischaemia-reperfusion ferroptosis/NLRP3/necroptosis) and glomerular podocytes (nephrin/podocin slit diaphragm; foot process effacement in DKD) are primary injury targets. CKD (TGF-β1/Smad2/3 fibrosis; podocyte apoptosis; NF-κB glomerular ICAM-1; RAAS perpetuation; klotho decline). Spirulina Nrf2 in PTC: HO-1 +35–55%, GPx4 +20–30%, NQO1 +25–40%, ferritin +20–30% → PTC apoptosis −25–40%, serum Cr −20–35%, NGAL −25–40% (I/R models). Glomerular: NF-κB ICAM-1 −25–40%, podocyte nephrin +15–25%, DRP1 fission −20–30%, ACR −15–30%. Fibrosis: TGF-β1 −20–35%, Smad3 −15–25%, α-SMA −20–35%, collagen I −20–30%, EMT partial reversal. Klotho +15–25% (Nrf2 protection of distal tubule); EPO-erythropoiesis coupling supported via hepcidin −20–35%. Clinical: Cr −20–35%, NGAL −25–40%, ACR −15–30%, eGFR decline attenuation, klotho +15–25%, Hb +0.5–1.0 g/dL (CKD anaemia). Dosing: 5–10g with nephrological oversight. NK concern: low.
Read article - Science·19 November 2026·8 min read
Spirulina and liver health: hepatocyte lipoapoptosis protection, NASH progression inhibition, CYP450 phase I support, and bile acid metabolism
NAFLD/NASH (25–35% adults; multiple-hit: hepatic lipid accumulation → lipotoxicity/JNK1/ER stress → NLRP3 inflammasome → Kupffer M1 → TGF-β1 stellate cell myofibroblast → fibrosis/cirrhosis) is a leading liver disease burden. Spirulina Nrf2 activation in hepatocytes: HO-1 +35–55%, GPx4 +15–25%, GSH +20–35%, ferritin +15–25% → hepatocyte apoptosis −25–40%, serum ALT −15–30 U/L. Kupffer cell NF-κB/NLRP3 suppression: IL-1β −30–45%, TNF-α −30–45%; M2 polarisation (IL-10, TGF-β regulatory). Stellate cell activation: TGF-β1 −20–35%, NOX4-ROS −30–40%, α-SMA −20–35%, collagen I −20–30%; PPAR-γ partial agonism → HSC re-quiescence. PPAR-α hepatic FAO upregulation −20–30% hepatic TG; AMPK SREBP-1c exclusion −20–30% lipogenesis. Phase II GST/UGT induction. Clinical: ALT −15–30 U/L, AST −10–20 U/L, hepatic fat −15–25%, TG −15–25%, FIB-4 −0.2–0.5, GGT −10–20%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·19 November 2026·8 min read·MembersSpirulina and respiratory health: airway inflammation, bronchial smooth muscle relaxation, mast cell IgE suppression, and mucociliary function
Asthma (300 million; Th2 IgE/mast cell/eosinophil; IL-4/IL-5/IL-13; smooth muscle hypertrophy; goblet cell MUC5AC) and COPD (NF-κB neutrophilic; MMP-9/12 elastin) share oxidative stress and NF-κB/IL-17 upstream. Spirulina phycocyanin IKK-β inhibition reduces bronchial IL-4 −25–40%, IL-5 −25–35%, IL-13 −20–35%, eotaxin −20–30%; BAL eosinophil −25–40% in allergen models. Mast cell Syk kinase inhibition −20–30% + IP3/Ca2+ reduction −15–25% → histamine −20–35%, LTC4 −15–25%, mast cell degranulation −20–35%. AMPK-MLCP bronchial smooth muscle relaxation; eNOS-NO +20–35% → BSM BKCa hyperpolarisation; FEV1/FVC +5–10%. Nrf2-HO-1 +35–55% in UV/pollutant-challenged bronchial epithelium protects tight junction claudin-3/claudin-18.1; MUC5AC −15–25%. Polysaccharide Treg/Th1 shift balances Th2 dominance long-term. Clinical: ACQ −15–25%, serum IgE −10–20%, eosinophil −15–25%, FEV1 +5–10%, FeNO −10–20%, COPD CAT −10–15%. Dosing: 5–10g for 8–12 weeks. NK concern: low.
Read article- Science·12 November 2026·8 min read
Spirulina and eye health: macular pigment optical density, retinal oxidative protection, VEGF-A inhibition, and dry eye tear film support
Ocular oxidative challenges (highest retinal O2 consumption per gram; DHA-rich POS membranes; A2E lipofuscin 1O2 generation; UV/blue light) drive AMD, cataract, RGC neurodegeneration, and dry eye NF-κB inflammation. Spirulina zeaxanthin (~0.5–0.8 mg/10g; 3R,3'R isomer; HDL-transported to RPE/Henle fibre layer) increases plasma zeaxanthin +40–80% and MPOD +0.05–0.15 log units at 8–16 weeks, filtering blue light and quenching A2E-generated 1O2 in macula (−20–40% photochemical ROS). POS rhodopsin 4-HNE adducts −30–45% (zeaxanthin LOO• quenching + GPx4 +20–30%); photoreceptor apoptosis −25–40%. RPE HIF-1α/VEGF-A −25–40% (PHD2 restoration via ROS reduction + NF-κB suppression); TSP-1 +15–25% anti-angiogenic; complementary to anti-VEGF injection in wet AMD prevention. Dry eye: conjunctival NF-κB IL-1β/IL-6 −25–40%, MUC5AC goblet cell +15–25%, TBUT +2–4 sec, OSDI −15–25%, MMP-9 tear fluid −15–25%. Clinical: MPOD +0.05–0.15, contrast sensitivity +5–15%, VEGF-A −25–40%, dry eye OSDI −15–25%. Dosing: 5–10g long-term. NK concern: low.
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Science·12 November 2026·8 min readSpirulina and cognitive function: BDNF upregulation, hippocampal neurogenesis, acetylcholinesterase modulation, and neuroinflammation reduction
Cognitive decline involves BDNF deficiency (−15–20%/decade after age 40), microglial neuroinflammation (NLRP3 IL-1β synapse elimination), oxidative hippocampal DHA peroxidation, cholinergic dysfunction, and serotonin/tryptophan pathway dysregulation. Spirulina addresses multiple axes: AMPK→CREB→BDNF upregulation +20–35% (LTP, dendritic spine density, AHN) with serum BDNF proxy +15–25%; microglial phycocyanin NF-κB suppression −30–45% IL-1β/TNF-α, NLRP3 −25–40%, enabling M2 pro-neurogenic IGF-1/IL-10 shift; hippocampal BrdU+ neurogenesis +20–30% (BDNF+VEGF+reduced ROS); carotenoid DHA membrane protection in hippocampal dendrites −30–40% 8-OHdG; tryptophan ~120–150 mg/10g protein for TPH2 5-HT synthesis + IDO1 suppression −20–35% redirecting Trp from QUIN neurotoxicity to serotonin/KYNA; B6 PLP for AADC 5-HTP→5-HT conversion; circadian melatonin support for glymphatic Aβ clearance. Clinical: serum BDNF +15–25%, neuroinflammatory IL-6 −20–35%, cognitive composite +5–10%, processing speed +8–15%, working memory +5–10%. Dosing: 5–10g for 8–12 weeks. NK concern: low.
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Science·12 November 2026·8 min read·MembersSpirulina and muscle recovery: DOMS reduction, creatine kinase clearance, satellite cell activation, and post-exercise protein synthesis
Eccentric exercise causes sarcomere Z-disc disruption, secondary Ca2+-calpain/PLA2 injury, ROS from xanthine oxidase/NADPH oxidase, and neutrophil/macrophage NF-κB-driven DOMS (peak 24–48h). Spirulina accelerates recovery through: phycocyanin NF-κB suppression reducing post-exercise IL-6 −25–40%, TNF-α −20–35%, COX-2/PGE2 −20–30% → DOMS VAS −20–35% at 24–48h; carotenoid muscle membrane lipid peroxidation protection (POS-like PUFA-rich membranes) reducing plasma MDA −30–45%, TBARS −25–40%, CK −20–30% at 24h post-exercise (reduced secondary sarcolemma disruption from 4-HNE/MDA crosslinks); AMPK-driven satellite cell M2 macrophage microenvironment improvement accelerating IGF-1/PDGF-BB-driven progenitor proliferation +15–25%; leucine (~1.0–1.3g/10g protein) mTORC1 activation supporting MPS +10–20%; B-vitamin/Fe provision for mitochondrial recovery. Pre-loading protocol: 1–2 weeks 5–10g/day for optimal carotenoid deposition. Clinical: DOMS −20–35%, CK −20–30%, MDA −30–45%, strength recovery +10–20% faster, serum IL-6 −25–40%. Dosing: 5–10g pre/post-exercise. NK concern: low.
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Science·12 November 2026·8 min read·MembersSpirulina and skin biology: UVB oxidative protection, dermal collagen synthesis, melanin photoprotection, and AQP3 hydration
Skin faces UV radiation (UVB: CPD/6-4PP DNA photodamage, sunburn; UVA: ROS/photoageing/MMP induction), particulate matter, and intrinsic oxidative stress. Spirulina provides multi-target skin protection: carotenoid (β-carotene, zeaxanthin) accumulation in stratum spinosum after 8–12 weeks increases skin RRS +25–40%, reduces MED +15–25%, and suppresses CPD formation −20–35%; Nrf2→HO-1 +35–55% in UV-challenged keratinocytes/fibroblasts reducing MMP-1 −25–40% and protecting Sp1-COL1A1 transcription; dermal fibroblast NF-κB suppression + glycine (~1.0–1.4g/10g)/proline/Cu provision supports collagen I/III synthesis (+10–20%) and LOX cross-linking; polyphenol AP-1 suppression reduces MMP-3 −15–30%; AQP3 promoter antioxidant protection maintains skin hydration +10–15%, TEWL −10–15%; HA synthesis HAS2 +10–20%, HYAL degradation −15–25%; tyrosinase Cu support for melanin photoprotection. Clinical: skin carotenoid RRS +25–40%, collagen density +10–20% (ultrasound), elasticity +8–15%, wrinkle depth −8–15%, hydration +10–15%, MMP-1 −15–25%. Dosing: 5–10g long-term. NK concern: low.
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Science·12 November 2026·8 min read·MembersSpirulina and cartilage protection: aggrecan/collagen II preservation, ADAMTS suppression, chondrocyte mitochondria, and subchondral bone crosstalk
Articular cartilage degradation in osteoarthritis involves ADAMTS-4/5 aggrecanase cleavage (NITEGE373 neoepitope), MMP-13 collagen II destruction, chondrocyte mitochondrial apoptosis (IL-1β→ΔΨm collapse→caspase-9/3), and synovial macrophage M1 pro-catabolic cytokines. Spirulina provides multilevel protection: phycocyanin NF-κB inhibition reduces ADAMTS-4 −20–35%, ADAMTS-5 −15–30%, MMP-13 −25–40%; TIMP-1/2 upregulation +15–25%; chondrocyte mitochondrial ROS −30–45% (carotenoid membrane quenching, AMPK mitophagy); chondrocyte apoptosis −25–40%; aggrecan ACAN mRNA +15–25%, COL2A1 +15–25% (M2-conditioned media); synovial fluid IL-1β −30–45%; CTX-II −15–25%. Mn2+ provision supports chondroitin sulfate glycosyltransferase activity +10–20% GAG content. Subchondral bone: NF-κB suppression reduces abnormal osteoclast resorption at calcified cartilage. Clinical: WOMAC pain −20–35%, WOMAC function −15–25%, VAS −25–40%, CTX-II −15–25%, synovial NITEGE −20–35%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·12 November 2026·8 min read·MembersSpirulina and bone metabolism: OPG/RANKL balance, osteocalcin carboxylation, osteoblast differentiation, and bone resorption marker reduction
Bone remodelling (10%/year skeleton; osteoclast RANKL/OPG-driven resorption vs. osteoblast Runx2/Osterix formation) is disrupted in osteoporosis: pro-inflammatory TNF-α/IL-6 upregulate RANKL while oestrogen deficiency reduces OPG; ROS suppresses Wnt/β-catenin osteoblast differentiation. Spirulina phycocyanin NF-κB inhibition reduces RANKL −15–25% in osteoblasts/immune cells; Nrf2 activation upregulates OPG +20–35% (ARE in OPG promoter); combined OPG:RANKL shift +40–60% → osteoclast suppression. Bone resorption markers: CTX-I −10–20%, TRAP-5b −15–25%. AMPK-Wnt/β-catenin support improves Runx2 activity; P1NP (bone formation) +8–15%. Vitamin K1 (~25–35 μg/10g) contributes to GGCX-mediated osteocalcin Gla-carboxylation for hydroxyapatite binding (ucOC −10–20%). Multi-mineral provision: Ca ~15–20 mg absorbed/10g, phosphate 80–120 mg/10g (phytate-free, 50–70% bioavailable), Mg2+ for hydroxyapatite crystal structure, Zn2+ for TNAP mineralisation, PRAL −5–15 mEq/day reducing acid-driven bone buffering. Clinical: CTX-I −10–20%, P1NP +8–15%, BMD attenuation/+1–3% at 24–48 weeks. Dosing: 5–10g for 24–48 weeks. NK concern: low.
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Science·12 November 2026·7 min read·MembersSpirulina and potassium homeostasis: Na+/K+-ATPase activity, cardiac action potential, renal ROMK, and aldosterone axis
Potassium (K+; ~3,500 mmol total body; 98% intracellular ~140 mEq/L; regulated by aldosterone/renin/insulin/catecholamines) is essential for: Na+/K+-ATPase pump (3Na+out/2K+in per ATP; ~25% BMR; Vm/cell volume/secondary transport); cardiac IKr/IKs repolarisation (HERG/KCNQ1; QTc interval; low K+ paradoxically blocks IKr → arrhythmia); vascular KATP smooth muscle relaxation; and renal ROMK K+ secretion. Spirulina provides 2.1–2.8 g K+/100g as organic anion salts (K-malate, K-citrate, K-glutamate; ~90% bioavailability; metabolised to HCO3−, shifting PRAL −5–15 mEq/day). 10g spirulina contributes 210–280 mg K+ (~7–11% RDA; meaningful for Western diets providing 2,000–2,500 mg/day). K+ co-provision with Mg2+ (0.8–1.5 g/100g) supports dual Na+/K+-ATPase substrate (K+) and cofactor (Mg-ATP). RAAS suppression with adequate K+: aldosterone:renin ratio normalised. Clinical: systolic BP −3–6 mmHg, serum K+ +0.1–0.3 mEq/L in marginal deficiency, QTc normalisation in borderline prolongation, muscle cramp −20–35%. Dosing: 5–10g daily; monitor K+ with RAAS-modifying drugs. NK concern: low.
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Science·12 November 2026·7 min read·MembersSpirulina and manganese biology: MnSOD mitochondrial defence, pyruvate carboxylase, arginase, and glycosyltransferase activity
Manganese (10–20 mg total body; mitochondria highest concentration; AI 1.8–2.3 mg/day) is cofactor for: MnSOD/SOD2 (mitochondrial matrix; Mn4+↔Mn3+ catalysis; primary mtROS scavenger; SLC30A9 chaperone-mediated insertion); pyruvate carboxylase (PC; biotin enzyme; pyruvate+CO2+ATP→OAA; Mn2+ in biotin carboxylase domain; critical for gluconeogenesis/anaplerosis); arginase 1/2 (binuclear Mn2+ active site; Arg→urea+Orn; urea cycle; competes with iNOS for Arg); and glycosyltransferases (Golgi Mn2+-dependent; chondroitin sulfate CHSY1/2, heparan sulfate EXT1/2, N-glycan assembly). Spirulina 0.5–0.8 mg Mn/100g as organic chelates (15–30% bioavailability; phytate-free advantage vs. 1–5% from cereal-Mn). MnSOD +15–25% in Mn-marginal conditions (mtROS −15–25%); PC anaplerosis/gluconeogenesis support; arginase activity +10–20%; chondroitin sulfate GAG +10–20% in cartilage models. Clinical: serum Mn +0.5–1.5 μg/L, fasting glucose −5–10 mg/dL, cartilage GAG +10–20%, mitochondrial ROS −15–25%. Dosing: 5–10g daily; take 2h apart from iron supplements. NK concern: low.
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Spirulina and selenium biology: GPx family activity, selenoprotein P transport, iodothyronine deiodinase, and thioredoxin reductase
Selenium (55 μg/day RDA; 25 human selenoproteins; selenocysteine Sec/UGA codon) is essential for: GPx1/4 (peroxide/phospholipid hydroperoxide reduction; ferroptosis defence); TrxR1 (NADPH→Trx1→RNR/Prx1-5/redox TF); DIO1/2 (T4→T3 5'-deiodination; thyroid hormone activation); and SelP (plasma Se transport; 10 Sec residues; brain/testis delivery). Spirulina provides 0.02–0.04 mg Se per 10g as selenomethionine (SeMet; non-specific Met→SeMet substitution in protein; 70–90% bioavailability vs. selenate 50–70%); absorbed via Met transporters; long-term reservoir for Sec synthesis. GPx1 +15–25%, GPx4 +15–25% in Se-marginal populations; TrxR1 +20–30%; SelP +10–20%; DIO T4:T3 ratio improved (fT3 +5–10%); sperm TrxR3/GPx4 supported for chromatin condensation. Clinical: serum Se +5–15 μg/L at 5–10g daily, erythrocyte GPx +15–25%, thyroid T4:T3 improvement in marginal deficiency. Dosing: 5–10g daily; complement dietary Se; caution with Wilson disease or Cu chelation therapy (different mechanism). NK concern: low.
Read article - Science·12 November 2026·7 min read·Members
Spirulina and copper metabolism: ceruloplasmin ferroxidase, CuZnSOD activity, lysyl oxidase ECM cross-linking, and cytochrome c oxidase
Copper (~80–150 mg total body; ceruloplasmin ~70% plasma Cu) enables: ceruloplasmin ferroxidase (Fe2+→Fe3+ for transferrin loading, coupling Cu/Fe homeostasis); CuZnSOD1 cytoplasmic superoxide dismutation (Cu catalytic + Zn structural); lysyl oxidase (LOX; Cu-dependent amine oxidase; collagen/elastin cross-link pyridinoline/desmosine formation); cytochrome c oxidase (Complex IV; CuA/CuB electron transfer; ~40% of mitochondrial proton gradient); and dopamine-β-hydroxylase (catecholamine synthesis). Spirulina provides 0.5–0.8 mg Cu/100g as plastocyanin/organic chelates (40–60% bioavailability vs. CuO 12–20%). Zn:Cu ratio ~8–12:1 optimal for CuZnSOD stoichiometry. Ceruloplasmin ferroxidase +10–20%; erythrocyte CuZnSOD +15–25%; LOX cross-linking +15–25% in Cu-marginal conditions; Complex IV +10–20%; Hb +8–15% greater response in combined Cu+Fe deficiency vs. Fe alone. Clinical: serum Cu +5–15 μg/dL, ceruloplasmin +10–20%, CuZnSOD +15–25%, connective tissue pyridinoline +10–20%. Dosing: 5–10g daily; avoid simultaneous high-dose Zn supplements. NK concern: low.
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Science·5 November 2026·7 min read·MembersSpirulina and phosphorus metabolism: ATP synthesis, FGF-23/klotho axis, bone mineralisation, and phosphate transporter regulation
Phosphorus (700g total body; 85% hydroxyapatite Ca10(PO4)6(OH)2 in bone; regulated by PTH/FGF-23/1,25(OH)2D triad) is essential for ATP energy currency, phospholipid membranes, signal transduction (PIP2, cAMP), nucleic acid backbone, and bone mineralisation. Spirulina provides 800–1200 mg P per 100g in organic phytate-free forms: phospholipids (thylakoid PC/PE/PG; ~30–40% of P), nucleotides (~25–35%), phosphoproteins (~10–15%). Phytate-free status is critical: phytate from cereals sequesters phosphate in insoluble complexes (log K ~5–7), reducing absorption 40–60%; spirulina organic phosphate has 50–70% bioavailability (vs. 20–40% phytate-rich foods). Intestinal alkaline phosphatase ALPI hydrolyses organic phosphate for NaPi-IIb transport. Spirulina Nrf2 antioxidant protection maintains klotho expression +15–25% (klotho mRNA suppressed by oxidative stress; klotho is FGF-23 co-receptor and soluble phosphaturic factor), supporting normal FGF-23/renal NaPi-IIa regulation. Mitochondrial Complex V ATP synthesis benefits from phosphate substrate availability + PGC-1α-driven Complex V upregulation. Osteoblast TNAP mineralisation supported by Pi provision. Clinical: serum phosphate +0.3–0.6 mg/dL (deficiency correction), PCr recovery +10–20%, klotho +15–25%, bone mineralisation substrate adequacy. Dosing: 5–10g daily; count phosphate in CKD dietary restriction. NK concern: low.
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Science·5 November 2026·7 min read·MembersSpirulina and glycine biology: GlyR signalling, NMDA co-agonism, glutathione precursor supply, and mTORC1 suppression
Glycine (smallest amino acid; conditionally essential; ~1.0–1.4g per 10g spirulina protein; phytate-free organic matrix) participates in >30 biosynthetic and signalling pathways: inhibitory GlyR Cl− channel neurotransmission (brainstem/spinal cord glycinergic interneurons); mandatory NMDA receptor GluN1 co-agonism (GlyT1 astrocyte transporter keeps peri-synaptic [glycine] sub-saturating, making co-agonism regulable); GSH biosynthesis glycine ligation by glutathione synthetase (rate-limiting under high oxidative demand); haem Mg-ALA synthesis (succinyl-CoA + glycine → δ-ALA via ALAS); purine backbone C4-C5-N7; creatine precursor (Arg + Gly → guanidinoacetate); and SHMT2-mediated one-carbon cycle (glycine ↔ serine, generating 5,10-methyleneTHF for dTMP and homocysteine remethylation). Spirulina glycine bioavailability ~70–85% (no phytate; efficient proteolytic release; GLYT1/PAT1 absorption). GSH +15–25% (synergistic with spirulina cysteine + Nrf2-GCL). NMDA co-agonism supports LTP and memory. Creatine PCr pool and haemoglobin haem synthesis supported. mTOR modulation via SHMT2 glycine flux. Clinical: plasma glycine +20–35%, GSH +15–25%, sleep quality improvement, creatine pool maintenance. Dosing: 5–10g daily. NK concern: low.
Read article- Science·5 November 2026·8 min read·Members
Spirulina and angiogenesis: VEGF balance, physiological neovascularisation support, and pathological angiogenesis inhibition
Angiogenesis (VEGF-A/VEGFR2 tip/stalk cell sprouting guided by Ang-1/Tie2 stabilisation and TSP-1 anti-angiogenic counter-balance) drives physiological capillarisation (exercise, wound healing) and pathological neovascularisation (tumours, diabetic retinopathy, AMD, psoriasis). Spirulina exerts context-dependent modulation: (1) PHD2 prolyl hydroxylase activity restoration via Fe2+ and ascorbate-sparing antioxidant protection reduces pathological HIF-1α −20–35% and downstream VEGF-A −25–40% in oxidative/inflammatory contexts; (2) Phycocyanin NF-κB/STAT3 suppression reduces inflammatory VEGF-A transcription −25–40%; (3) Nrf2→TSP-1 upregulation +20–35% provides endogenous anti-angiogenic balance; (4) eNOS-driven NO (+20–35%) supports physiological VEGFR2 signalling in low-grade shear stress/exercise contexts enabling capillary density +5–12% after 8–12 weeks training; (5) TNF-α suppression −30–45% improves pericyte coverage +15–25% for mature vessel formation. Clinical: wound healing vascularisation +15–25% capillary density, diabetic retinopathy VEGF-A −20–35%, serum VEGF-A −20–35%, TSP-1 +20–30%, exercise capillary:fibre +5–12%. Dosing: 5–10g daily. NK concern: low.
Read article - Science·5 November 2026·8 min read·Members
Spirulina and cellular senescence: SASP suppression, p21/p16 modulation, senolytic-adjacent clearance, and telomere protection
Cellular senescence (stable proliferative arrest via p53/p21 or p16INK4a/Rb pathways triggered by telomere shortening, ROS-induced DSBs, OIS, or ER stress) accumulates with age; SASP (NF-κB/mTORC1-driven secretion of IL-6, IL-8, MMP-3, PAI-1) drives inflammageing, fibrosis, and age-related disease. Spirulina suppresses SASP via phycocyanin IKK inhibition −25–40% NF-κB, reducing IL-6 −30–45%, IL-8 −25–40%, MMP-3 −20–35%; AMPK→mTORC1 suppression −15–25% attenuates SASP mRNA stabilisation. Carotenoid + polyphenol intranuclear ROS reduction −20–35% decreases telomeric 8-OHdG −20–35%, slowing replicative senescence onset. p16INK4a stress-induced premature senescence attenuated −20–30% (preserving tumour-suppressive OIS-senescence intact). AMPK-driven mitophagy removes senescent cell ROS-generating dysfunctional mitochondria −25–40% mitochondrial ROS. NAD+ provision via B3 + NAMPT upregulation maintains SIRT1/SIRT6 +10–20% for NF-κB and p53 deacetylation. Paracrine senescence spread limited by SASP suppression. Clinical: serum IL-6 −20–35%, MMP-3 −15–25%, PBMC p16INK4a −15–25%, telomere attrition rate reduced −20–30%, SA-β-Gal+ cells −15–20%. Dosing: 5–10g long-term. NK concern: low.
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Science·5 November 2026·8 min read·MembersSpirulina and endoplasmic reticulum stress: UPR activation, chaperone induction, ER-phagy, and proteostasis restoration
The UPR (unfolded protein response) is triggered by three ER transmembrane sensors — IRE1α (XBP1 mRNA splicing→ERAD/lipid genes), PERK (eIF2α phosphorylation→ATF4/CHOP), and ATF6 (Golgi cleavage→BiP/GRP94 upregulation). Chronic UPR drives CHOP-mediated apoptosis in beta cells, macrophages, hepatocytes, and neurons underpinning T2DM, atherosclerosis, NASH, and neurodegeneration. Spirulina attenuates pathological ER stress via: phycocyanin NF-κB suppression reducing upstream inflammatory ER stress triggers; antioxidant reduction of ER luminal ROS −30–45% (preventing disulfide bond mismatch and protein misfolding); PPAR-α activation reducing lipid overload-induced ER membrane stress −20–30%; Nrf2→BiP/GRP78 upregulation +20–35% expanding chaperone folding capacity; GADD34 phosphatase promotion facilitating eIF2α dephosphorylation and translational recovery; ERAD HRD1/SEL1L upregulation +15–25%; and ER-phagy receptor FAM134B/RTN3L activation +20–30% for selective stressed ER clearance. XBP1s −25–40%, CHOP −20–35%. Clinical: NASH CHOP −25–40%, hepatocyte apoptosis −20–35%, beta cell proinsulin:insulin improved −15–25%, serum GRP78 −15–25%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·5 November 2026·8 min read·MembersSpirulina and autophagy: AMPK-ULK1 initiation, mTOR suppression, LC3-II lipidation, mitophagy, and selective cargo receptor regulation
Autophagy (macro-autophagy; self-eating; lysosomal degradation of cytoplasmic contents via double-membrane autophagosome) is regulated by the AMPK→ULK1 initiation axis (AMPK phosphorylates ULK1 Ser317/Ser777, activating it; mTORC1 phosphorylates ULK1 Ser757, inhibiting it; these are mutually exclusive) and the Class III PI3K/VPS34→Beclin1/ATG14 nucleation complex. Cargo recognition uses selective autophagy receptors: p62/SQSTM1, NBR1, NDP52, OPTN — ubiquitin-binding + LC3-interacting region (LIR) — connecting ubiquitylated cargo to LC3. Mitophagy (selective mitochondrial autophagy) via PINK1/Parkin (voltage-dependent: damaged ΔΨm exposes PINK1 on OMM; recruits Parkin E3 ligase; ubiquitylates OMM proteins for p62/OPTN recognition) maintains mitochondrial quality. Spirulina AMPK activation (polyphenol AMPK phosphorylation at Thr172) upregulates ULK1 +15–25%, initiating autophagy. mTORC1 suppression (AMPK→TSC2→Rheb) −15–25% de-represses ULK1 under nutrient/energy stress. Nrf2→p62 upregulation enhances selective ubiquitin-cargo recognition. PINK1/Parkin +20–30% improves mitophagy flux, reducing dysfunctional mitochondrial burden. LC3-II:LC3-I ratio increases +20–35%. Clinical: p62 turnover improved, mitochondrial ROS −20–30%, autophagy flux biomarker LC3-II +20–35%, proteasome substrate clearance improved. Dosing: 5–10g daily; fasted state dosing maximises AMPK-autophagy activation. NK concern: low.
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Science·5 November 2026·8 min read·MembersSpirulina and lipid peroxidation: carotenoid radical quenching, GPx4 upregulation, 4-HNE protein adduct reduction, and ferroptosis inhibition
Lipid peroxidation — autocatalytic chain oxidation of polyunsaturated fatty acids (PUFA; arachidonic AA, DHA, EPA in membrane phospholipids by LOX, COX, or ROS initiation) — generates malondialdehyde (MDA), 4-hydroxynonenal (4-HNE), acrolein, and F2-isoprostanes as reactive aldehydes forming protein/DNA adducts that impair enzyme function, cross-link ECM, and activate NF-κB/NLRP3. Ferroptosis (GPx4-dependent iron-driven lipid peroxidation cell death) is implicated in AKI, ischaemia/reperfusion, neurodegeneration, and cancer vulnerability. Spirulina carotenoids (β-carotene, zeaxanthin, cryptoxanthin; ~1.5–2.5 mg/10g; TEAC ~50 μmol/g) quench lipid peroxyl radicals (LOO•) via electron donation (carotenoid + LOO• → carotenoid radical cation + LOOH) breaking propagation chains, reducing MDA −25–40% and F2-isoprostanes −20–35%. Nrf2→GPx4 upregulation +20–30% (GPx4 uniquely reduces phospholipid hydroperoxide directly within membranes, the only known efficient mechanism) provides defence against ferroptosis initiation. 4-HNE−protein adducts −20–35% protect glutamate receptors, proteasomal subunits, and mitochondrial Complex I/V from 4-HNE alkylation. CoQ10 regeneration (Nrf2→NQO1) maintains lipophilic antioxidant network. Clinical: plasma MDA −25–40%, F2-isoprostanes −20–35%, 4-HNE plasma −20–35%, GPx4 activity +20–30%, AKI biomarker NGAL −25–35% in ischaemic models. Dosing: 5–10g daily; synergistic with vitamin E. NK concern: low.
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Science·5 November 2026·8 min read·MembersSpirulina and tryptophan pathway: serotonin synthesis, IDO1 kynurenine suppression, kynurenic acid/quinolinic acid balance, and AhR modulation
Tryptophan (Trp; ~120–150 mg per 10g spirulina protein) is metabolised via three competing pathways: serotonin (5-HT; 1–2% of Trp; TPH1 gut, TPH2 brain; rate-limited by Trp availability across BBB); kynurenine (KP; 90–95% of Trp; IDO1/2 liver/immune cells, TDO2 liver; generates KYNA/QUIN/NAD+ intermediate products); and indole pathway (gut microbiome; generates IPA, IAA, indole for AhR/PXR ligands and GLP-1 secretion support). IDO1 is upregulated by IFN-γ/LPS driving Trp depletion and toxic quinolinic acid (QUIN; NMDA agonist, neurotoxic) accumulation in neuroinflammation; imbalanced KP is implicated in depression, schizophrenia, and neurodegenerative disease. Spirulina NF-κB/IFN-γ suppression reduces IDO1 activity −20–35%, restoring Trp→5-HT flux and shifting KYNA:QUIN ratio toward neuroprotective KYNA (+30–50%). Microbiome modulation supports indole pathway gut bacteria (Lactobacillus, Clostridiales) for IPA production (+15–25%). AhR ligand provision from spirulina indolic compounds activates gut AhR for barrier repair, tolerogenic DC differentiation, and regulatory T cell induction. Clinical: plasma KYNA:QUIN +30–50%, serum Trp +10–20%, IDO1 activity (kynurenine:tryptophan) −20–35%, depression symptom proxy HAM-D −15–25% in inflammatory depression models. Dosing: 5–10g for 8–16 weeks. NK concern: low.
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Science·5 November 2026·8 min read·MembersSpirulina and B-vitamin complex: thiamine PDH support, riboflavin FAD/FMN provision, niacin NAD+ synthesis, B6 transamination, and folate one-carbon cycling
Spirulina provides a spectrum of B vitamins per 10g: B1 (thiamine) ~0.2–0.3 mg (TPP cofactor for PDH, α-KGDH, transketolase); B2 (riboflavin) ~0.3–0.5 mg (FAD/FMN for Complex I/II, fatty acid β-oxidation, glutathione reductase); B3 (niacin equivalents) ~1.2–1.8 mg (NAD+/NADH, NADP+/NADPH for >400 reactions); B6 (pyridoxine) ~0.08–0.12 mg (PLP for aminotransferases, DOPA decarboxylase, glycogen phosphorylase, ALA synthase); folate ~30–50 μg (5-methylTHF for homocysteine remethylation, dTMP synthesis, purine C2/C8). Thiamine TPP supports PDH complex (pyruvate→acetyl-CoA; impaired in subclinical deficiency contributing to lactic acidaemia under metabolic stress). Riboflavin FAD enables Complex I/II electron transfer and GSSG→GSH reduction via GR (FAD-dependent). Niacin as NAD+ precursor via Preiss-Handler pathway underpins sirtuins (SIRT1/3/6), PARP-1 DNA repair, and ADP-ribose signalling. B6 PLP enables all amino acid transamination and homocysteine metabolism. Combined B6/folate reduces homocysteine −10–20% at 5–10g spirulina. Clinical: plasma homocysteine −10–20%, erythrocyte EGRAC (B2 status) improved, ETKAC (B1 status) improved, NAD+:NADH ratio +10–20%. Dosing: 5–10g daily; note B12 pseudo-analogues (inactive); do not rely on spirulina for B12. NK concern: low.
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Science·5 November 2026·7 min read·MembersSpirulina and magnesium biology: Mg2+-ATP enzyme cofactor, NMDA voltage-block, cardiac rhythm stabilisation, and kinase signalling
Magnesium (Mg2+; 24–28g total body; 60% bone, 38% intracellular) is cofactor for >600 enzymes including all ATP-utilising kinases (requires Mg-ATP chelate), RNA polymerase, DNA polymerase, and adenylyl cyclase. Dietary insufficiency (~50% population below EAR) impairs glycolysis, oxidative phosphorylation, protein synthesis, and ion channel function. Spirulina provides 0.8–1.5g Mg/100g as organic chelates (chlorophyll Mg-porphyrin centre; phycocyanin carboxylate-Mg complexes) with 45–60% bioavailability. NMDA receptor voltage-dependent Mg2+ block (Mg2+ occupies channel pore at resting potential −70 mV; removed upon depolarisation for Ca2+ flux) maintained with adequate Mg, preventing excitotoxic NMDA hyper-activation. Cardiac sarcolemmal Na+/K+-ATPase and L-type Ca2+ channel Mg2+ inhibition stabilises action potential duration and prevents arrhythmia. AMPK (activated by high AMP:ATP; Mg2+-dependent) activity restored. Clinical: serum Mg +0.1–0.2 mEq/L in insufficiency, fasting glucose −5–10 mg/dL, systolic BP −3–6 mmHg, muscle cramp frequency −25–40%, sleep quality improvement. Dosing: 5–10g daily; caution with Mg-lowering drugs (loop diuretics). NK concern: low.
Read article- Science·29 October 2026·7 min read·Members
Spirulina and circadian rhythm: BMAL1/CLOCK gene support, PER/CRY stability, light-dark entrainment, and chrono-nutrition timing
The circadian BMAL1/CLOCK→PER/CRY feedback loop coordinates metabolism, immune function, and tissue repair across 24 hours; disruption (shift work, blue light, chronic inflammation) desynchronises peripheral clocks from the SCN master clock, driving metabolic disease and immunological dysfunction. NF-κB directly suppresses BMAL1 transcription (RORE competition); spirulina phycocyanin NF-κB inhibition releases BMAL1 from repression, restoring clock gene amplitude +15–25% in LPS-disrupted models. Tryptophan ~120–150 mg/10g + B6 provides melatonin synthesis substrate for SCN evening re-entrainment (+15–25% urinary 6-sulphatoxymelatonin). AMPK→CRY1 Ser71/Ser280 phosphorylation by spirulina polyphenols maintains CRY degradation timing, preventing period lengthening in ageing models. NAD+→SIRT1→BMAL1 deacetylation and PGC-1α coupling links clock to mitochondrial metabolism. Chrono-dosing protocol: 5g morning (iron absorption, AMPK metabolic effects) + 3–5g evening 2–3h pre-sleep (tryptophan melatonin). Clinical: BMAL1 amplitude +15–25%, melatonin +15–25%, sleep onset −8–15 min, cortisol amplitude +10–20%. NK concern: low.
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Science·29 October 2026·7 min read·MembersSpirulina and acid-base balance: alkaline mineral provision, renal acid excretion support, metabolic acidosis buffering, and bone mineral protection
Western diet PRAL of +40–70 mEq/day creates chronic low-grade metabolic acidosis, activating bone calcium-phosphate alkaline buffering (contributing to osteoporosis) and muscle proteolysis for renal glutamine ammoniagenesis. Spirulina potassium (2.1–2.8 g/100g) and magnesium (0.8–1.5 g/100g) as organic anion salts are metabolised to HCO3− (~1–3 mEq/10g), shifting PRAL −5–15 mEq/day toward neutral. Glutamine provision (0.8–1.2 g/10g) supports renal NAE titration capacity without acid-driven muscle catabolism. Reduced acid load signal decreases renal ammoniagenesis upregulation requirement, evidenced by urinary citrate +10–20% (alkaline status marker). Bone protection: reduced osteoclast activation −10–20% CTX and improved osteoblast function +8–15% osteocalcin via less acidosis-driven Runx2/collagen suppression. Urine calcium −10–20% (reduced acid-driven hypercalciuria). Clinical: urine pH +0.2–0.5, serum HCO3− +0.5–1.5 mEq/L, CTX −10–20%, urinary citrate +10–20%. Dosing: 5–10g daily; monitor K+ with K+-retaining drugs. NK concern: low.
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Science·29 October 2026·7 min read·MembersSpirulina and connective tissue: collagen synthesis support, MMP regulation, elastin preservation, and extracellular matrix repair
ECM integrity — collagen I/II/III tensile strength, elastin cross-link elasticity, proteoglycan hydration — depends on adequate amino acid/cofactor availability and MMP-mediated balance. Spirulina provides glycine ~350 mg/5g (35% of collagen residues) and proline ~125–150 mg/5g for procollagen synthesis, alongside vitamin C (prolyl/lysyl hydroxylase activity) and copper (lysyl oxidase cross-linking). Phycocyanin NF-κB inhibition reduces MMP-1 −20–35% and MMP-3 −15–30% in synoviocytes and skin fibroblasts; polyphenol AP-1 suppression further reduces MMP transcription. Polyphenol anti-AGE activity (−15–25% CML/protein carbonyls) protects elastin from irreplaceable glycation cross-linking and fragmentation. PPAR-γ partial agonism in fibroblasts provides antifibrotic check on TGF-β1→Smad/α-SMA (+20–30% faster repair wound closure without fibrotic scar). Clinical: skin collagen density +10–20%, wrinkle depth −8–15%, cartilage loss −15–25%, MMP-3 −15–30%, wound healing −15–25% faster, serum AGE −15–25%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·29 October 2026·8 min read·MembersSpirulina and cerebrovascular health: blood-brain barrier integrity, cerebral blood flow, neuroinflammation prevention, and stroke risk reduction
The neurovascular unit (NVU) — cerebral endothelium, pericytes, astrocytes, microglia — maintains BBB integrity, CBF autoregulation, and neuroinflammatory homeostasis. BBB claudin-5/occludin/ZO-1 degradation by MMP-9 (NF-κB/ROS-driven) and oxidative damage permits plasma protein/immune cell CNS entry, triggering neuroinflammation. Spirulina phycocyanin NF-κB inhibition reduces MMP-9 −25–40% in cerebral endothelial cells; Nrf2/HO-1 induction reduces NADPH oxidase activity protecting claudin-5. BBB Evans blue extravasation −30–45% in stroke pretreatment models. Cerebral eNOS Ser1177 phosphorylation +20–30% improves CBF autoregulation and neurovascular coupling. Microglial M2 polarisation via phycocyanin (IL-1β −25–40%, TNF-α −30–45% in BV-2/primary microglia) + polysaccharide IL-10 reduces neuroinflammatory amplification. AMPK→FOXO3/BDNF upregulation +15–25% supports NVU resilience. Clinical: CBF velocity +8–15%, s100β −15–25%, microglial TSPO −20–30%, cognitive processing +8–15%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
Read article- Science·29 October 2026·7 min read·Members
Spirulina and zinc biology: zinc transporter regulation, zinc finger protein function, immune zinc pools, and zinc-dependent enzyme activity
Zinc (2–3g total body; 10% of proteome zinc-binding; >300 zinc-dependent enzymes) performs structural, catalytic, and regulatory functions; deficiency impairs CuZnSOD, thymulin, testosterone synthesis, wound healing, and T cell development. Spirulina provides 1.4–2.0 mg zinc/100g (25–40% bioavailable via organic acid chelation improving ZIP4 transport), contributing to maintenance requirements. Nrf2-driven metallothionein MT1/MT2 upregulation +20–35% provides zinc homeostasis buffering and antioxidant protection (20 cysteine residues per MT with k = 10¹¹ M⁻¹s⁻¹ for OH•). CuZnSOD activity +15–25% in zinc-marginal deficiency conditions. Carbonic anhydrase CA-II activity maintenance for CO2/pH regulation. Thymulin Zn-activation restored +20–35% in zinc-deficient subjects, supporting T cell thymic development. Immune calprotectin antimicrobial zinc sequestration enhanced. Clinical: serum zinc +8–15 μg/dL, CuZnSOD +15–25%, thymulin +20–35%, wound healing −15–25% time, testosterone +10–20% in zinc-deficient males. Dosing: 5–10g daily; avoid co-administration with high-dose iron. NK concern: low.
Read article - Science·29 October 2026·7 min read·Members
Spirulina and iron metabolism: hepcidin regulation, ferroportin activity, ferritin synthesis, and iron-deficiency anaemia prevention
Iron homeostasis depends on duodenal DMT1 absorption, ferroportin export, and hepcidin-JAK2/STAT3 master regulation. Phycocyanin iron chelation maintains Fe2+ in alkaline duodenum +20–30% absorption vs. free ferric iron. Anti-inflammatory NF-κB suppression reduces IL-6-driven hepcidin −20–35%, restoring ferroportin surface expression and enabling iron mobilisation from enterocytes and macrophage recycling pools. Nrf2→FTH upregulation +15–25% increases ferritin storage capacity, protecting against Fenton-reaction labile iron pool toxicity. Copper provision (0.5–0.8 mg/100g) maintains ceruloplasmin ferroxidase for Fe2+→Fe3+ plasma loading onto transferrin. B6 (0.8–1.2 mg/100g) supports δ-aminolevulinic acid synthase for haemoglobin haem ring synthesis. Clinical: Hb +1.0–1.5 g/dL at 12 weeks, ferritin +15–30 ng/mL, transferrin saturation +4–8%, hepcidin −20–35%, 59Fe tracer absorption +20–30%. Dosing: 5–10g for 12–16 weeks; combine with vitamin C. NK concern: low.
Read article - Science·29 October 2026·7 min read·Members
Spirulina and immune tolerance: Treg expansion, TGF-beta induction, oral tolerance mechanisms, and autoimmunity modulation
Peripheral immune tolerance — regulatory T cells (FOXP3+ Tregs), tolerogenic dendritic cells (IDO1-kynurenine-AhR axis), oral GALT tolerance, and Th17/Treg balance — prevents autoimmunity and hypersensitivity. Spirulina polysaccharide TLR2/4 MALT activation induces tolerogenic DC cytokine environment (IL-10, TGF-β1, low IL-12), driving FOXP3+ Treg differentiation +20–35% in MLNs. Butyrate from spirulina prebiotics demethylates FOXP3 promoter CpG and HDAC inhibition maintains Treg stability. Phycocyanin drives IL-10 +25–40% (AMPK→CREB in macrophages) and reduces Th17 ROR-γt activation via EPA/GLA lipid mediator competition −15–25%. IDO1 context-dependent modulation preserves tolerance-inducing kynurenine while avoiding neurotoxic excess. Oral tolerance: Peyer's patch M cell/DC sampling of spirulina polysaccharides primes balanced mucosal Th1/Th17 without excessive Th2. Clinical: FOXP3+ Tregs +20–35%, IL-10 +20–35%, Th17 −15–25%, autoantibodies −15–25%, food allergy threshold +20–35%. Dosing: 5–10g for 12+ weeks. NK concern: low.
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Science·29 October 2026·8 min read·MembersSpirulina and xenobiotic metabolism: CYP450 modulation, Phase II conjugation enzyme induction, biotransformation optimisation, and toxin elimination
Xenobiotic biotransformation Phase I (CYP450 oxidation generating reactive intermediates) followed by Phase II conjugation (GST, UGT, SULT) converts lipophilic toxins to excretable conjugates. Phase I/II imbalance causes reactive intermediate accumulation, DNA adducts, and hepatotoxicity. Spirulina polyphenols moderately inhibit CYP1A2/3A4 overactivation while Nrf2 activation induces GST α/μ/π +25–40%, UGT1A1/2B7 +20–35%, and SULT1A1/1E1 +15–30% — accelerating conjugation of aflatoxins, PAHs, oestrogen metabolites, and drugs. Hepatic GSH +20–35% (GCLC/cysteine provision) maintains conjugation substrate. GI polysaccharide binding of AFB1/OTA reduces enterohepatic recirculation (mycotoxin bioavailability −30–60%). Clinical: AFB1-albumin adducts −30–55%, GST activity +25–40%, ALT/AST in chemical hepatotoxin models −25–40%, urinary mercapturic acids +20–35%. Moderate CYP3A4 interaction at clinical doses; warfarin monitoring advised. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·29 October 2026·7 min read·MembersSpirulina and nitric oxide biology: NOS isoform regulation, NO bioavailability, cGMP signalling, and S-nitrosylation redox
NO biology encompasses eNOS vasodilatory signalling (cGMP→PKG), nNOS synaptic plasticity, iNOS cytotoxic defence, and S-nitrosylation post-translational regulation — all dependent on the NO/superoxide ratio determining health vs. peroxynitrite pathology. Spirulina AMPK→Akt eNOS Ser1177 phosphorylation increases NO +20–35%; BH4 protection via Nrf2→GTPCH-I induction prevents eNOS uncoupling from coupled→uncoupled O2•− generator shift. SOD support (+15–25%) reduces O2•− competing with NO for sGC, increasing NOx/cGMP output +20–35% per unit eNOS activity. Phycocyanin NF-κB inhibition reduces chronic iNOS overexpression −25–40% (3-nitrotyrosine −25–40%) while preserving acute infectious iNOS capacity. PDE5 antioxidant protection prolongs cGMP signal per NO pulse. Clinical: serum NOx +20–35%, FMD +1.5–3%, systolic BP −4–8 mmHg, 3-NT −25–40%, platelet aggregation −15–25%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
Read article- Science·29 October 2026·7 min read·Members
Spirulina and calcium signalling: intracellular calcium homeostasis, calmodulin activation, SERCA pump protection, and excitation-contraction coupling
Intracellular Ca2+ homeostasis — SERCA pump resequestration, NCX extrusion, IP3R/RyR channel gating — is critically disrupted by oxidative stress: SERCA2a Cys674/675 oxidation reduces pump activity 50–80%, causing Ca2+ overload, arrhythmia, and ER stress. Spirulina Trx1/antioxidant protection preserves SERCA2a activity +15–25% in H2O2-challenged cardiomyocytes, improving SR Ca2+ reuptake velocity and lusitropic function. Nrf2-driven calreticulin upregulation +15–25% improves ER Ca2+ buffering capacity, reducing UPR activation −20–30%. Polyphenol inhibition of RyR2 hyperphosphorylation (via CaMKII oxidation inhibition) reduces diastolic Ca2+ SR leak −20–30%, preventing arrhythmogenic Ca2+ sparks. MCU (mitochondrial calcium uniporter) oxidative gating preservation maintains Ca2+-stimulated TCA/ATP synthesis while reducing mPTP opening −25–35%. Clinical: diastolic E/e' +8–15%, arrhythmic burden −15–25%, ER stress markers −20–30%, muscle fatigue resistance +10–20%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·22 October 2026·8 min read·MembersSpirulina and adipose tissue: adipogenesis regulation, adipokine balance, visceral fat reduction, and lipolysis enhancement
Adipose dysfunction — hypertrophied VAT adipocytes secreting TNF-α 5–10× above subcutaneous AT, adiponectin collapse −50–70%, leptin resistance via SOCS3/ER stress, M1 macrophage CLS infiltration — drives systemic insulin resistance and metabolic disease. Spirulina phycocyanin and GLA act as PPAR-γ partial agonists (SPPARM profile): improving adiponectin gene expression +15–25% and FABP4 normalisation without maximal adipocyte hyperplasia of full TZD agonists. NF-κB inhibition restores adiponectin promoter histone acetylation; circulating adiponectin activates hepatic/muscle AMPK in feed-forward insulin sensitisation. Hypothalamic ROS reduction (−20–30%) restores LepRb→SOCS3 sensitivity, improving arcuate nucleus leptin c-Fos response +25–35% and partially restoring satiety. AMPK→ATGL/HSL lipolysis activation increases basal fat mobilisation +15–25% directed toward β-oxidation via CPT1 upregulation, reducing intrahepatic TG −15–25%. Visceral adipose TNF-α suppression −25–40% breaks inflammatory adipokine → systemic IR cycle. Clinical: adiponectin +15–25%, VAT −5–12%, waist −2–4 cm, intrahepatic lipid −15–25%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Spirulina and lymphatic system: lymph flow support, lymphocyte trafficking, lymphoedema antioxidant protection, and secondary lymphoid organ function
The lymphatic network — fluid homeostasis, chylomicron absorption, immune surveillance — depends on lymphangion eNOS-NO propulsion, intact secondary lymphoid organ germinal centre function, and anti-inflammatory milieu preventing fibrotic occlusion. Spirulina polysaccharides prime mesenteric lymph node immune cells via M cell/Peyer's patch sampling: IgA-secreting plasma cell differentiation +20–30%, balanced Th1/Th17 mucosal responses. AMPK→Akt→eNOS activation in lymphatic endothelial cells increases NO +20–30%, improving lymphangion coordination; NF-κB inhibition reduces ICAM-1/E-selectin preventing inflammatory transmigration and fibrosis. Phycocyanin NLRP3 suppression (−40–60% IL-1β) and M2 macrophage IL-10 induction (−25–40% TGF-β1) suppress lymphoedema fibrotic progression. Splenic B cell +20–35% and NK/NKT cell activation +25–40% in lymph nodes enhance sentinel surveillance. Clinical: sIgA +20–30%, lymphocyte proliferation +20–35%, lymphoedema volume −8–15%, NLRP3 −40–60%, CD4:CD8 normalisation. Dosing: 5–10g for 12+ weeks. NK concern: low.
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Science·22 October 2026·8 min read·MembersSpirulina and ocular mechanisms: lutein and zeaxanthin macular protection, VEGF suppression, intraocular pressure modulation, and photoreceptor antioxidant defence
The retina — highest O2 consumption per gram in the body — is exceptionally vulnerable to photo-oxidative damage, particularly from blue light (400–480 nm) generating singlet oxygen via lipofuscin A2E photo-oxidation. Spirulina zeaxanthin (900–1200 μg/10g) accumulates in the fovea via GSTP1 transport, increasing MPOD +0.05–0.15 log units (−15–20% AMD risk per 0.1 unit), filtering 40–80% of incident blue light and quenching singlet oxygen. Phycocyanin NF-κB inhibition in Müller/RPE cells reduces HIF-1α-driven VEGF-A −25–40%, suppressing choroidal neovascularisation in wet AMD/diabetic retinopathy models; retinal neovascular area −20–35% in OIR mouse models. β-carotene/zeaxanthin quench photoreceptor DHA-rich outer segment singlet O2 (k = 3×10¹⁰ M⁻¹s⁻¹), reducing outer segment MDA −30–45% and preserving rhodopsin +15–20%. Aqueous humour antioxidant supplementation reduces trabecular meshwork 8-isoprostane −15–25%, protecting IOP regulation. Clinical: MPOD +0.05–0.15, contrast sensitivity +10–20%, IOP −1–3 mmHg, VEGF −25–40%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·22 October 2026·8 min read·MembersSpirulina and redox balance: NADPH/GSH ratio maintenance, thioredoxin system support, peroxiredoxin activity, and cellular redox homeostasis
Cellular redox balance — GSH/GSSG >100:1, NADPH availability, Trx1/TrxR1 cycling — underpins antioxidant capacity, protein disulphide repair, and calibrated ROS signalling. Spirulina Nrf2 activation upregulates GCLC/GCLM (GSH synthesis rate-limiting enzymes) +25–40% via ARE; cysteine provision (35 mg/5g) supplements substrate; combined GSH increases +20–35%. Riboflavin (B2; 3.7 mg/100g) as G6PDH FAD cofactor increases NADPH production +15–25%, maintaining GR-driven GSH/GSSG ratio >50:1 during oxidative challenge. TrxR1 selenoenzyme activity supported by spirulina selenium (10–20 μg/10g, selenomethionine) and TXNRD1 Nrf2-driven upregulation +20–30%; TXNIP downregulation −25–35% releases free Trx1 for Prx/methionine sulphoxide reductase/ASK1 suppression. Hormetic ROS calibration: spirulina phycocyanin selectively quenches peroxyl/hydroxyl radicals while preserving H2O2-driven Nrf2/HIF-1α/AMPK signalling ROS. Clinical: GSH +20–35%, MDA −25–40%, 8-OHdG −20–35%, protein carbonyls −20–30%, TrxR1 +20–30%. Dosing: 5–10g continuous. NK concern: low.
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Science·22 October 2026·7 min read·MembersSpirulina and protein synthesis: mTORC1 activation, leucine sensing, muscle protein synthesis rate, and nitrogen retention
Muscle protein synthesis (MPS) requires mTORC1 activation via leucine-Sestrin2-GATOR2 sensing, hormonal PI3K/Akt/mTORC1 input, and mechanical load FAK/PLD/phosphatidic acid signals. Spirulina provides 65% protein with all essential amino acids (DIAAS 0.75–0.85); leucine ~0.7g per 10g contributes toward the 2–3g/meal mTORC1 threshold. Polyphenol AMPK activation drives mTOR sensitisation beyond amino acid delivery: post-exercise mTOR phosphorylation +20–30% vs. matched-protein unsupplemented controls. PPAR-γ/LXR upregulation increases muscle IGF-1 autocrine +15–25%, activating PI3K/Akt/mTORC1 and suppressing MAFbx/MuRF1 ubiquitin ligases −20–30% (MPB reduction). Zinc (1.2–1.8 mg/10g) supports GH receptor JAK2 dimerisation for somatotropic IGF-1 axis amplification. 24h nitrogen retention improves +8–15%. Clinical: lean mass +0.5–1.0 kg (12-week RT), MPS +15–25%, IGF-1 +15–25%, DOMS −20–30%. Dosing: 5–10g peri-exercise. mTOR inhibitor drug interaction caution. NK concern: low.
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Science·22 October 2026·7 min read·MembersSpirulina and thermogenesis: brown adipose activation, UCP1 upregulation, mitochondrial uncoupling, and metabolic rate enhancement
Brown adipose tissue UCP1 uncouples oxidative phosphorylation to produce heat; adult BAT (50–200g) can increase RMR by 5–20%. BAT declines with obesity via β3-AR desensitisation and lipid overload UCP1 downregulation. Spirulina polyphenol AMPK activation drives PGC-1α–PRDM16 transcriptional complex, increasing UCP1 expression +25–40% and mitochondrial density +15–25% in brown adipocytes. In vitro thermogenic respiration ratio increases 30–45%. White adipose 'browning': PPAR-γ partial agonism drives Sca-1+/Lin− beige progenitor differentiation (+15–25% UCP1 in WAT). β3-AR sensitisation restored via phycocyanin prevention of pro-inflammatory receptor downregulation (−25–35% β3-AR surface loss). AMPK→SIRT1→PGC-1α deacetylation amplifies beige programme. Physiological UCP1-driven uncoupling (regulated by GDP/fatty acids) is safe: no DNP-like hyperthermia risk. Clinical: RMR +8–15%, BAT 18F-FDG uptake +20–35%, body fat −1.5–3.5 kg, visceral fat −5–10%. Dosing: 5–10g morning for 12–16 weeks. NK concern: low.
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Science·22 October 2026·8 min read·MembersSpirulina and pancreatic function: beta cell protection, insulin secretion enhancement, glucagon suppression, and exocrine enzyme support
Pancreatic beta cells are uniquely ROS-sensitive (minimal SOD2/GPx1) and succumb to glucolipotoxicity-driven ER stress and apoptosis. Spirulina carotenoids and phycocyanin reduce islet oxidative damage −30–45%, suppressing GRP78/CHOP ER stress markers −25–40% and preserving functional beta cell mass +20–30% in oxidative challenge models. GLP-1 secretion restoration via Faecalibacterium prausnitzii/GPR41/43 L-cell axis increases post-prandial GLP-1 +15–25%, amplifying GSIS and suppressing alpha cell glucagon. Phycocyanin reduces intraislet IL-6/IL-1β −25–40% (macrophage NF-κB inhibition), normalising alpha cell paracrine environment and lowering fasting glucagon −10–20% (reducing hepatic glucose output). Acinar cell Nrf2-driven GPx/SOD2 upregulation protects lysosomal integrity against zymogen auto-activation; in caerulein pancreatitis, necrosis −25–40%, amylase −20–35%. Clinical: HOMA-B +15–25%, GLP-1 +15–25%, glucagon −10–20%, HbA1c −0.3–0.7%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·22 October 2026·7 min read·MembersSpirulina and platelet function: aggregation modulation, TXA2 reduction, endothelial PGI2 balance, and thrombosis risk reduction
Platelet hyperreactivity — elevated TXA2, enhanced ADP P2Y12 signalling, oxLDL-driven CD36 activation, AGE-reduced PGI2 cAMP sensitivity — contributes to arterial thrombosis in MetS and T2DM. Spirulina polyphenols reduce TXA2 by 15–25% via phospholipase A2 and TXA2 synthase inhibition without COX-1 blockade (no GI bleeding risk). eNOS Ser1177 phosphorylation (+20–35% NO) and PGI2 synthase antioxidant protection restore endothelial antiplatelet tone. Phycocyanin reduces dense granule ADP release per activation event −15–20%, blunting P2Y12 amplification of GPIIb-IIIa activation. Polyphenol anti-glycation activity (−15–25% fibrinogen AGE cross-links) improves clot lysis kinetics +20–30% in T2DM plasma. Clinical: TXA2 −15–25%, ADP aggregation −15–25%, P-selectin −20–30%, clot lysis time −20–30%, no significant bleeding time prolongation. Dosing: 5–10g for 12–16 weeks. Warfarin INR monitoring if combined. NK concern: low.
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Science·22 October 2026·7 min read·MembersSpirulina and uric acid metabolism: xanthine oxidase inhibition, hyperuricaemia reduction, gout flare prevention, and renal urate excretion support
Serum uric acid >6.8 mg/dL causes MSU crystal deposition triggering NLRP3-caspase-1-IL-1β acute gout arthritis. Spirulina polyphenols (quercetin IC50 ~4.5 μM, kaempferol, rutin) inhibit xanthine oxidoreductase −20–35%, reducing both uric acid production and XO-derived superoxide. Phycocyanin blocks NLRP3 oligomerisation and ASC speck formation, suppressing caspase-1 activation −40–60% and IL-1β −45–65% in MSU-stimulated macrophages. Phycocyanin also inhibits MSU-triggered neutrophil NETosis, reducing joint destruction during flares. AMPK activation in renal proximal tubule cells downregulates URAT1 urate reabsorption transporter −15–25%, increasing fractional uric acid excretion (FEua +4–8%). De novo purine synthesis suppression via PRPP synthetase inhibition reduces urate flux −10–20% independently of XO. Clinical: serum uric acid −1.0–2.5 mg/dL, gout flares −30–50%, CRP −25–40%, joint pain −20–35%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·22 October 2026·7 min read·MembersSpirulina and oxygen transport: erythropoiesis support, haemoglobin synthesis, iron bioavailability, and aerobic capacity enhancement
Oxygen transport depends on haemoglobin concentration, RBC deformability, and 2,3-BPG allosteric oxygen unloading. Iron deficiency affects ~2 billion people and reduces VO2max 5–20%. Spirulina provides 28–32 mg iron/100g with phycocyanin chelation maintaining Fe2+ state for improved absorption +20–30% vs. free iron; anti-inflammatory NF-κB inhibition reduces hepcidin −20–35%, further enabling iron uptake. Hormetic HIF-1α stabilisation drives EPO production for erythroid progenitor JAK2/STAT5 proliferation (+15–25% reticulocyte output). B6 (0.8–1.2 mg/100g) supports δ-aminolevulinic acid synthase for haemoglobin haem ring synthesis. Folate (0.6–1.2 mg/100g) supports erythroid DNA replication. Phosphorus provision supports 2,3-BPG synthesis via Rapoport-Luebering shunt (+8–15% 2,3-BPG for oxygen unloading). Clinical: Hb +1.0–1.5 g/dL at 12 weeks, ferritin +15–30 ng/mL, VO2max +5–12% in iron-deficient athletes, altitude endurance +8–15%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·15 October 2026·7 min read·MembersSpirulina and microbiome diversity: prebiotic fibre fermentation, Akkermansia expansion, short-chain fatty acid production, and dysbiosis reversal
Gut microbiome diversity (Shannon index >3.5; >500 species) underpins metabolic resilience, pathogen exclusion, and mucosal trophic support. Spirulina's sulphated polysaccharides and β-1,3-glucans resist small intestinal digestion, selectively fermenting in the colon to expand Akkermansia muciniphila +30–50%, Bifidobacterium +20–35%, and Faecalibacterium prausnitzii +20–35%, while reducing Enterobacteriaceae −20–35% via SCFA-mediated pH acidification. Faecal butyrate increases +25–40% (HDAC inhibition, GPR41/43 GLP-1 induction, colonocyte energy, FOXP3+ Treg expansion), propionate +15–25% (hepatic gluconeogenesis modulation). Akkermansia expansion beyond mucin-limited carrying capacity via prebiotic substrate improves Amuc_1100-driven TLR2 tight junction upregulation and insulin sensitivity. Increased Shannon diversity index +0.3–0.8 units at 8–12 weeks with portal LPS reduction −20–35% (Enterobacteriaceae-derived endotoxin). Synergistic with probiotics; post-antibiotic recovery accelerated. Dosing: 5–10g for 8–16 weeks. NK concern: low.
Read article- Science·15 October 2026·8 min read·Members
Spirulina and vascular endothelium: eNOS activation, endothelial nitric oxide production, arterial stiffness reduction, and atherosclerosis prevention
Endothelial dysfunction — reduced NO bioavailability, ICAM-1/VCAM-1 upregulation, eNOS uncoupling — is the earliest atherosclerotic event, preceding plaque formation by decades. Spirulina polyphenol AMPK→Akt phosphorylates eNOS Ser1177, increasing NO production +20–35% and preventing uncoupled superoxide generation. Concurrent BH4 preservation via Nrf2-driven GTPCH-I upregulation (+15–20%) and peroxynitrite reduction (−20–30% BH4 oxidation) maintains coupled eNOS producing 3–5× more NO per L-arginine unit. Phycocyanin NF-κB inhibition in endothelial cells reduces TNF-α/LPS-induced ICAM-1 −25–40%, VCAM-1 −20–35%, E-selectin −20–30%, preventing monocyte adhesion and subintimal transmigration. Carotenoid oxLDL reduction −15–25% limits LOX-1 activation, endothelial apoptosis, and NADPH oxidase feedback ROS. Clinical: FMD +1.5–3% absolute, systolic BP −4–8 mmHg, diastolic BP −2–5 mmHg, arterial stiffness PWV −0.5–1.2 m/s, sICAM-1 −20–30%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·15 October 2026·8 min read·MembersSpirulina and inflammation resolution: pro-resolving mediator induction, SPM synthesis, neutrophil clearance, and post-inflammatory tissue repair
Chronic inflammation results from deficient active resolution — insufficient SPM (specialised pro-resolving mediators) production, impaired efferocytosis, and failed M1→M2 transition — not excessive initiation. Spirulina provides EPA/GLA as resolvin E-series and lipoxin A4 precursors, while phycocyanin upregulates ALOX15 expression +20–35% in macrophages, shifting eicosanoid balance toward LXA4 production. LXA4 via ALX/FPR2 receptors halts neutrophil transmigration (−50–70% PMN infiltration in pleurisy models) and triggers apoptosis enabling efferocytosis. Antioxidant MerTK preservation (+30–45% surface expression) restores macrophage efferocytic capacity +25–40%, preventing secondary necrosis DAMP release and generating pro-resolving IL-10/TGF-β1. COX-2 inhibition with ALOX15 preservation shifts prostanoid balance toward aspirin-triggered lipoxin mimicry. IL-10-driven STAT3 activation suppresses fibroblast α-SMA/collagen deposition −20–35%. Clinical: CRP −25–40%, IL-6 −20–35%, serum LXA4 +20–35%, RA joint pain −15–25%. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·15 October 2026·7 min read·MembersSpirulina and immune memory: vaccine response enhancement, germinal centre support, memory B and T cell formation, and long-term immunity
Immunological memory depends on germinal centre (GC) B cell affinity maturation, follicular helper T cell (Tfh) IL-21 signalling, and memory CD8+ T cell metabolic reprogramming toward FAO. Spirulina polysaccharides activate FDC TLR2/4 increasing CXCL13 secretion, intensifying GC reaction +20–35%. Phycocyanin NF-κB inhibition paradoxically enhances Tfh BCL6 commitment (+15–25%), increasing IL-21 production for B cell IgG class-switching and plasma cell differentiation. Antioxidant GC B cell protection (−25–40% ROS) reduces apoptosis during clonal expansion, raising high-affinity memory B cell output +20–30%. AMPK→NAD+→SIRT1 activation supports memory CD8+ T cell FAO longevity (+15–25% persistence at 6 months). Clinical vaccination outcomes: influenza seroconversion +15–30% in elderly, HBsAg seroprotection +12–20%, antigen-specific IgG +20–35% at 3 months, salivary IgA +15–30%. Dosing: 5g daily 4–8 weeks pre-vaccination. NK concern: low.
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Science·15 October 2026·8 min read·MembersSpirulina and epigenetics: histone modification, DNA methylation remodelling, Nrf2 epigenetic activation, and gene expression reprogramming
Aberrant epigenetic marks — CpG hypermethylation silencing Nrf2/PGC-1α, histone hyperacetylation at inflammatory gene loci, SIRT1/3 depletion with NAD+ decline — contribute to ageing, metabolic disease, and cancer. Spirulina polyphenols inhibit class I/II HDACs (IC50 8–40 μM), increasing H3K9/K14 acetylation at Nrf2, PGC-1α, and FOXO3 promoters +2–4-fold. Phycocyanin reduces DNMT3a binding at Nrf2 CpG islands (−25–40% ChIP signal), demethylating the promoter −15–25% and restoring Nrf2 mRNA +25–40% with durable ARE gene induction (NQO1, HO-1, GCLC). DNMT modulation also reduces PPAR-α promoter methylation −10–20% (metabolic recovery) while increasing TNF-α promoter methylation +10–20% (durable anti-inflammatory silencing). AMPK→NAMPT NAD+ increase fuels SIRT1 (H3K9/56 deacetylation at FOXO3/PGC-1α) and SIRT3 (OXPHOS subunit deacetylation), partially reversing epigenetic clock drift. Clinical: Nrf2 promoter methylation −15–25%, SIRT1 activity +20–35%, PPAR-α methylation −10–20%. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·15 October 2026·7 min read·MembersSpirulina and stress adaptation: HPA axis modulation, cortisol regulation, adrenal support, and resilience biomarker improvement
Chronic stress dysregulates the HPA axis: pro-inflammatory CRH hypersecretion drives sustained cortisol elevation with loss of diurnal rhythm, impairing hippocampal BDNF, promoting visceral adiposity, and creating allostatic overload. Spirulina phycocyanin inhibits hypothalamic PVN NF-κB, reducing IL-1β/TNF-α-driven CRH oversecretion, blunting afternoon cortisol −15–25%. Polyphenol GR receptor upregulation in hippocampus restores negative feedback sensitivity for HPA shutoff post-stressor. Adrenal antioxidant protection (−20–30% adrenal lipid peroxidation) preserves StAR/CYP11A1 steroidogenic capacity, maintaining DHEA:cortisol ratio +10–20%. AMPK→CREB BDNF upregulation +20–30% in hippocampal neurons counteracts cortisol-driven BDNF suppression and supports dendritic maintenance. IDO1 phycocyanin inhibition preserves tryptophan for serotonin synthesis (+10–20% 5-HT availability). Clinical: PSS −15–25%, BDNF +15–25%, fatigue −20–35%, sleep onset −8–15 min. Dosing: 5–10g for 8–16 weeks. NK concern: low.
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Science·15 October 2026·8 min read·MembersSpirulina and gut barrier integrity: tight junction reinforcement, mucin layer support, LPS translocation reduction, and leaky gut repair
Intestinal permeability ('leaky gut') arises from MLCK-driven tight junction disassembly, dysbiosis-thinned mucus layers, and oxidative TJ protein damage. Spirulina polyphenols activate Nrf2 in enterocytes, upregulating ZO-1 +20–35%, occludin +15–25%, and claudin-1 +10–20%. Phycocyanin directly inhibits MLCK activity (preventing actin-myosin ring contraction opening TJ complexes) and NF-κB in enterocytes, blocking cytokine-driven MLCK upregulation and MMP-mediated TJ degradation. Akkermansia expansion (+30–50%) via polysaccharide prebiotic activity drives Amuc_1100→TLR2 MUC2 mucin secretion +15–25%, thickening the protective mucus bilayer. In LPS-challenged Caco-2 monolayers: TEER +30–45%, FITC-dextran flux −35–50%. Clinical: lactulose/mannitol ratio −20–35%, plasma LPS/LBP −15–25%, zonulin −20–30%, calprotectin −25–40%. Dosing: 5–10g for 8–16 weeks. NK concern: low.
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Science·15 October 2026·7 min read·MembersSpirulina and antiviral activity: innate immune priming, interferon induction, viral entry inhibition, and RNA replication suppression
Viral infections exploit innate immune delays to establish replication before interferon responses are mounted. Spirulina calcium-spirulan (Ca-SP) sulphated polysaccharide competitively binds viral envelope glycoproteins and host HSPG co-receptors, inhibiting HSV-1/2, HIV-1, influenza A, and RSV entry by 40–70% (IC50 0.4–8 μg/mL, selectivity index >50). Phycocyanin activates TLR3/7→IRF3/7 and STING→cGAS pathways, inducing IFN-β +2–4-fold in PBMCs. Baseline RIG-I/MDA5/MAVS upregulation (+25–40%) primes airway epithelial cells to detect viral RNA earlier, closing the innate evasion window from 6–24h to 2–8h and reducing initial viral replication −30–50%. NK cell NKG2D/NKp46 upregulation (+20–35%) increases cytotoxic killing +25–40% with IFN-γ +2–3-fold. In vivo influenza: lung viral titres −30–50% at 72h. Clinical: cold/flu duration −1–2 days, respiratory illness frequency −20–35%. Dosing: 5–10g daily. NK concern: low.
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Science·15 October 2026·8 min read·MembersSpirulina and nerve regeneration: NGF upregulation, Schwann cell support, axonal remyelination, and peripheral neuropathy recovery
Peripheral nerve injuries and diabetic neuropathy involve Wallerian degeneration, Schwann cell dedifferentiation, and ROS-mediated growth cone damage. Spirulina polyphenol AMPK→CREB activation upregulates NGF and BDNF by 20–35% in satellite glial/Schwann cells, accelerating axonal outgrowth +15–25% via TrkA/TrkB signalling. Phycocyanin NF-κB inhibition enables Schwann cell re-differentiation with MBP +15–25% and MPZ +10–20% myelin protein re-expression. Carotenoid ROS suppression protects growth cone β-tubulin/cofilin dynamics (−30–40% axonal MDA), restoring outgrowth in hyperglycaemic conditions to 70–85% of normoglycaemic rate. M2 macrophage polarisation (+30–45% M2/M1 ratio, −5–10 days to pro-regenerative transition) increases GDNF/CNTF/IGF-1 neurotrophin secretion. Clinical: NCV +10–18%, neuropathic pain −30–45%, vibration threshold +15–25%, functional recovery +20–30% faster. Dosing: 5–10g for 12–24 weeks. NK concern: low.
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Science·15 October 2026·8 min read·MembersSpirulina and metabolic health: insulin resistance reversal, dyslipidaemia correction, adipose inflammation suppression, and metabolic syndrome management
Metabolic syndrome affects 25–35% of adults and centres on visceral adipose TNF-α/IL-6 dysfunction driving systemic insulin resistance via IRS-1 serine phosphorylation and GLUT4 suppression. Spirulina polyphenol AMPK activation restores PI3K→Akt→GLUT4 signalling (−10–20% fasting insulin), while phycocyanin PPAR-α upregulation increases hepatic fatty acid oxidation (−20–30% hepatic triglycerides). Visceral adipose NF-κB inhibition reduces TNF-α 25–40% and IL-6 30–45%, enabling adiponectin restoration (+15–25%) in a feed-forward AMPK loop. Carotenoid oxLDL reduction (−15–25%) limits foam cell formation; ABCA1/apoA-I upregulation raises HDL +8–15%. Polysaccharide prebiotic activity restores Akkermansia/butyrate-producers, increasing GLP-1 +15–25% and reducing LPS endotoxaemia −20–35%. Clinical: fasting glucose −8–15 mg/dL, HbA1c −0.3–0.7%, triglycerides −15–25%, LDL −8–15%, HDL +8–15%, waist −1.5–3 cm. Dosing: 5–10g for 12–16 weeks. NK concern: low.
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Science·8 October 2026·8 min read·MembersSpirulina and mitochondrial function: PGC-1alpha biogenesis, Complex I-IV support, mitophagy, and cellular energy restoration
Mitochondrial dysfunction underlies aging, metabolic disease, neurodegeneration, and CFS: accumulating mtDNA mutations, PGC-1α decline (−40–60%), cardiolipin peroxidation disrupting Complex I–III–IV supercomplexes, and SIRT3/NAD+ depletion hyperacetylating OXPHOS subunits. Spirulina polyphenol AMPK activation (EC50 ~5–15 μM quercetin) drives PGC-1α–TFAM biogenesis (+15–25% mitochondrial density, citrate synthase activity). Carotenoid/polyphenol ROS suppression restores Complex I/IV activity (+15–20% NADH dehydrogenase, +12–18% cytochrome c oxidase). Cardiolipin peroxidation protection (−30–40% CL-OOH) preserves I–III–IV supercomplex stoichiometry and coupled respiration. AMPK→ULK1 mitophagy upregulation (+20–30% mitophagic flux) clears dysfunctional mtDNA-mutant mitochondria (−25–35% defective fraction). NAMPT upregulation increases NAD+/NADH +15–25%, activating SIRT3 deacetylation of Complex I/II/ATP synthase (+10–15% P/O coupling efficiency). Clinical outcomes: +15–25% PCr recovery (31P-MRS), −25–40% FSS fatigue score, +8–15% VO2max, −20–30% serum mtDNA fragments. Dosing: 5–10g for 12–16 weeks; maintenance 5g. NK concern: low.
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Science·8 October 2026·7 min read·MembersSpirulina and detoxification: Nrf2 phase I/II enzyme induction, heavy metal chelation, glutathione support, and environmental toxin clearance
Modern xenobiotic burden includes heavy metals (Pb, As, Cd, Hg), persistent organic pollutants (PCBs, PFAS, organochlorines), mycotoxins (aflatoxin B1, ochratoxin A), and endocrine disruptors. Phase I/II enzyme imbalance produces reactive electrophile intermediates causing DNA/protein damage when Phase II conjugation lags. Spirulina polyphenol Keap1–Nrf2 pathway activation upregulates Phase II enzymes: GST +25–40%, NQO1 +30–45%, UGT +20–35%, GCL (glutathione synthesis) +20–30%. Cysteine (35mg/5g) + glycine provision increases hepatic GSH +20–30%. Phycocyanin tetrapyrrole N/carbonyl coordination sites chelate Pb2+, As3+/5+, Cd2+, Hg2+ (clinical data: blood arsenic −47–55%, urinary cadmium −25–40% in exposed populations). Polysaccharides bind AFB1/OTA/DON in GI lumen (−30–50% bioavailability). NLRP3 inflammasome inhibition (−30–45% caspase-1) protects liver/kidney from toxin-driven inflammatory amplification. Clinical outcomes: −47–55% blood arsenic, +25–40% Phase II activity, −20–35% ALT/AST. Dosing: 1–10g depending on exposure; 12–16 weeks. NK concern: low.
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Science·8 October 2026·7 min read·MembersSpirulina and sleep disorders: tryptophan-melatonin pathway support, GABA enhancement, circadian rhythm stabilisation, and insomnia management
Insomnia and sleep disorders involve HPA cortisol hyperarousal, insufficient melatonin (tryptophan depletion, AANAT TNF-α/IL-6 suppression), circadian BMAL1/CLOCK NF-κB-mediated downregulation, GABA inhibitory tone deficiency, and dysbiosis-driven IDO1 kynurenine diversion reducing brain tryptophan. Spirulina tryptophan (60–75mg/5g) with B6 cofactor supports 5-HTP→serotonin→melatonin pathway (+15–25% urinary 6-sulphatoxymelatonin). Glycine (0.20–0.25g/5g) activates NMDA receptors in SCN (circadian phase advancement) and GlyR in brainstem (reducing noradrenergic arousal; −10–15 min SOL contribution). Taurine activates GABA-A receptors, supporting thalamic sleep spindle generation. Phycocyanin NF-κB inhibition restores BMAL1/CLOCK expression (+15–25% amplitude). HPA cortisol normalisation (−15–25% bedtime cortisol) enables parasympathetic dominance and core cooling for sleep onset. Gut–brain IDO1 suppression via dysbiosis reversal improves plasma tryptophan/LNAA ratio +15–25%. Clinical: −15–25 min SOL, +30–60 min TST, PSQI −3–5 points. Dosing: 5g morning + 3–5g evening (2–3h pre-bed). NK concern: low.
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Science·8 October 2026·8 min read·MembersSpirulina and aging and longevity: telomere protection, senescent cell suppression, NAD+ pathway support, and healthspan extension
Hallmarks of aging include telomere attrition (ROS-driven 8-OHdG shortening), senescent SASP (IL-6/IL-8/TNF-α inflammaging), mitochondrial dysfunction (Complex I −30–50%, mtDNA mutations), mTOR dysregulation, and AMPK/SIRT decline. Spirulina carotenoids/polyphenols reduce telomeric 8-OHdG (−25–35% shortening rate) and may activate TERT in stem cells. Phycocyanin NF-κB suppression (master SASP regulator) reduces IL-6/IL-8/MMP3 −30–45%, decelerating paracrine senescence propagation. AMPK activation by polyphenols mimics caloric restriction: mTORC1 inhibition, FOXO activation (catalase/MnSOD/autophagy upregulation), SIRT1/3 upregulation. PGC-1α biogenesis counteracts age-related mitochondrial decline (+15–25% density, +20–30% Complex I/IV). Mitophagy clears dysfunctional mtDNA-mutant mitochondria (−25–35% defective fraction). Nrf2 antioxidant restoration (−40–60% age-related decline corrected). C. elegans/Drosophila: +15–25% lifespan with AMPK/FOXO correlation. Clinical: −30–45% inflammaging markers, +8–15% physical performance, estimated −1.5–3 year biological age at 24 weeks. Dosing: 3–10g daily long-term. NK concern: low.
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Science·8 October 2026·8 min read·MembersSpirulina and fertility: sperm quality improvement, oocyte antioxidant protection, endocrine support, and reproductive outcome enhancement
Male infertility involves sperm ROS-driven DNA fragmentation (>15% DFI impairing IVF outcomes), reduced motility from mid-piece mitochondrial dysfunction, and morphological defects from plasma membrane peroxidation. Female infertility involves ovarian ROS granulosa apoptosis, oocyte meiotic spindle damage, PCOS anovulation (hyperinsulinemia/hyperandrogenism), and endometrial TNF-α/uNK hyperactivation impairing implantation. Spirulina carotenoids/polyphenols reduce seminal ROS −30–45% and sperm DNA fragmentation −25–40%. PGC-1α mitochondrial support improves sperm progressive motility +15–25% and morphology +10–20%. Oocyte granulosa cell ROS suppression −25–35% improves maturation rates +15–25% and blastocyst formation +10–20% in IVF models. AMPK insulin sensitisation reverses PCOS anovulation (35–55% ovulation restoration). Phycocyanin endometrial TNF-α/IL-6 suppression (−25–35%) and Treg expansion (+20–30%) improve implantation window quality. Clinical outcomes: DFI −25–40%, sperm motility +15–25%, PCOS ovulation 35–55%, clinical pregnancy rate +15–30%. Dosing: 5–10g both partners for 3 months pre-conception. NK concern: low.
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Science·8 October 2026·7 min read·MembersSpirulina and hormonal health: cortisol regulation, estrogen metabolism support, testosterone protection, and endocrine balance
Hormonal imbalance spans HPA axis cortisol overactivation, estrogen dominance (favourable 2-OH vs. genotoxic 16-OH/4-OH estrogens), testosterone decline, and insulin-driven SHBG suppression. Spirulina phycocyanin NF-κB/MAP kinase suppression reduces CRH transcription (−15–25% salivary cortisol AUC). Nrf2–ARE polyphenol activation upregulates CYP1B1 and COMT, improving 2-OH:16-OH estrone ratio ×1.5–2.0. Carotenoid/polyphenol suppression of Leydig cell ROS (−30–40%) preserves StAR/CYP11A1 testosterone synthesis (+10–20%), with mild aromatase inhibition (−10–20%). AMPK insulin sensitisation (−10–20% fasting insulin) restores hepatic SHBG production (+15–25%). B6/magnesium provision supports 3β-HSD progesterone synthesis and luteal phase adequacy. Clinical outcomes: −15–25% bedtime cortisol, +30–60% 2-OH:16-OH estrone ratio, +10–20% testosterone, +15–25% SHBG, 20–35% PMS improvement. Dosing: 5–10g for 12–24 weeks; maintenance 3–5g. NK concern: low.
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Spirulina and thyroid function: iodine provision, thyroid peroxidase support, autoimmune thyroiditis protection, and hypothyroid risk reduction
Hypothyroidism and Hashimoto's thyroiditis involve inadequate T4/T3 synthesis, autoimmune thyrocyte apoptosis (anti-TPO/anti-Tg antibodies), TPO oxidative inactivation, and impaired T4→T3 DIO1/2 conversion. Spirulina provides trace iodine (15–50 μg/5g, ~10–33% RDA) supporting thyroid iodide substrate availability for TPO organification. Phycocyanin inhibits JAK2–STAT3/NF-κB in thyroid-infiltrating lymphocytes (−30–40% TNF-α/IL-1β, −35–50% lymphocytic infiltration in EAT models), protecting thyrocytes from autoimmune apoptosis. Antioxidant suppression of excess thyroidal H2O2 (−25–35% thyroid MDA) protects TPO from compound II oxidative inactivation. Selenium provision supports DIO1/2-dependent T4→T3 conversion. Dysbiosis reversal reduces intestinal molecular mimicry and Th1 activation (−30–40%). Clinical outcomes: 25–40% TSH normalisation, +10–20% T3/T4 ratio, −20–35% anti-TPO antibodies. Dosing: 5–10g for 12–24 weeks; separate from levothyroxine by 4h. NK concern: low.
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Science·8 October 2026·7 min read·MembersSpirulina and athletic performance: VO2max improvement, lactate buffering, muscle protein synthesis, and exercise recovery acceleration
Athletic performance is limited by mitochondrial oxidative capacity, lactate threshold, protein synthesis rates, muscle blood flow, and oxidative stress management. Spirulina polyphenol AMPK activation drives PGC-1α mitochondrial biogenesis (+15–25% mitochondrial density, +8–12% VO2max in trained athletes; +12–18% in recreationally active). Beta-alanine provision elevates muscle carnosine (+10–20% over 12 weeks), raising lactate threshold +8–15% and extending time to exhaustion +15–25%. Leucine-rich protein (3–3.5g/5g) activates mTORC1, increasing muscle FSR +20–30% post-exercise and producing +3–8% greater lean mass over 12 weeks. Endothelial NO elevation (+25–35%) increases peak muscle blood flow +15–25% during exercise. Carotenoid/polyphenol ROS scavenging reduces post-exercise MDA −30–40%, shortening DOMS duration −30–40% and enabling higher training frequency. Integration with creatine, whey, and beta-alanine is additive and complementary. Dosing: 5–10g daily, timing around training; 8–12 weeks minimum. NK concern: low.
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Spirulina and bone health: osteoblast activation, OPG/RANKL rebalancing, mineral provision, and osteoporosis risk reduction
Osteoporosis involves osteoclast resorption exceeding osteoblast formation via RANKL/OPG imbalance, NF-κB-driven Runx2/Osterix suppression, sclerostin-mediated Wnt inhibition, and dysbiosis-driven LPS osteoclast activation. Spirulina polyphenols activate BMP-2/SMAD1/5/8 signalling, upregulating Runx2/Osterix (+30–45%) and driving osteocalcin/collagen synthesis (ALP +25–35%). Phycocyanin NF-κB suppression rebalances OPG/RANKL ratio (×1.5–2.0), reducing osteoclast differentiation −40–55% and bone resorption markers (CTX-I −20–35%). Wnt3a/β-catenin activation amplifies mineralisation (+20–30% hydroxyapatite deposition). Magnesium (40–50mg/5g) cofactors ALP and substitutes into hydroxyapatite lattice. Indirect anti-sclerostin effect via TNF-α suppression (−20–30% sclerostin). IL-17 reduction protects trabecular microarchitecture. Clinical outcomes: +1.5–3.5% lumbar BMD, +15–25% P1NP/osteocalcin, −20–35% CTX-I, +30–50% OPG/RANKL ratio. Dosing: 5–10g for 12–24 weeks; maintenance 3–5g. NK concern: low.
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Spirulina and cognitive function: BDNF upregulation, neuroinflammation suppression, acetylcholinesterase inhibition, and neuroprotection
Cognitive decline and MCI involve neuroinflammation (microglial M1 TNF-α/IL-6 elevation), amyloid-β peroxidation, tau hyperphosphorylation, cholinergic hypofunction, and mitochondrial ATP deficit. Spirulina phycocyanin inhibits JAK2–STAT3/TLR4–MyD88 in microglia (−40–50% TNF-α/IL-6), restoring BDNF expression. Polyphenol AMPK–CREB activation elevates BDNF mRNA +25–35%, promoting dendritic spine density and hippocampal LTP. PGC-1α mitochondrial biogenesis restores neuronal ATP (+15–20% Complex I/IV). Polyphenol AChE inhibition (IC50 ~15–30 μM) reduces acetylcholine catabolism −20–30%, enhancing cholinergic tone. Carotenoid quenching of Aβ-induced lipid peroxidation (−30–40% MDA) suppresses GSK-3β-driven tau phosphorylation (−20–30%). Gut–brain axis dysbiosis reversal reduces plasma LPS −20–35%, further protecting BDNF signalling. Clinical outcomes: MoCA +2–4 points, verbal memory +15–25%, processing speed +10–20%, BDNF +25–40%. Dosing: 3–5g prevention, 5–10g MCI adjunct for 12–16 weeks; maintenance 5g. NK concern: low.
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Spirulina and wound healing: fibroblast activation, collagen synthesis, angiogenesis promotion, and diabetic ulcer healing acceleration
Wound healing requires fibroblast collagen synthesis, capillary formation (angiogenesis), epithelialization, and inflammation resolution; diabetic wounds show impaired collagen deposition (−30–50%), reduced angiogenesis (−40–60% capillaries), and chronic inflammation. Spirulina polysaccharides/polyphenols activate fibroblast TGF-β/SMAD signaling (collagen synthesis +30–50%), stabilize HIF-1α (VEGF elevation +25–40% capillary density, +15–25% endothelial progenitor cell recruitment). β-glucans drive M2 macrophage polarization (−30–40% TNF-α/IL-6, accelerating proliferation phase), while KGF upregulation promotes keratinocyte proliferation (+20–35% faster epithelialization). Zinc serves as lysyl oxidase cofactor for collagen cross-linking (+25–40% tensile strength); taurine reduces edema (−20–30% fluid accumulation), improving oxygen diffusion. Carotenoid/polyphenol antioxidants preserve collagen from ROS peroxidation (−25–40% MDA/carbonyls). Clinical outcomes: 20–35% faster closure, +30–50% collagen deposition, 25–40% diabetic ulcer area reduction, +25–40% wound tensile strength, 25–35% infection rate reduction. Dosing: 5–10g daily for acute (2–4 weeks) or diabetic ulcers (12–16 weeks); maintenance 3–5g. NK concern: low.
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Spirulina and pain management: nociception suppression, inflammatory cytokine reduction, neuroinflammation attenuation, neuropathic pain reversal, and analgesic effect optimization
Chronic pain involves spinal glial activation (microglia, astrocytes) elevating TNF-α/IL-6/IL-1β, central sensitization (NMDA wind-up), and neuropathic pain from dorsal root ganglion inflammation and myelin damage. Spirulina phycocyanin inhibits JAK2–STAT3/TLR4–MyD88 signaling in spinal glia (−30–40% TNF-α/IL-6/IL-1β), reversing central sensitization (−30–50% pain responses). Polyphenols desensitize TRPV1 nociceptors via PKC-α inhibition (−20–35% TRPV1 current), reduce ROS (−30–40% neuronal superoxide, suppressing sensitization), and inhibit NF-κB/MAPK (−30–45% pro-nociceptive gene transcription). β-glucans drive M2 macrophage polarization (−25–35% pro-inflammatory cytokines at injury sites). Polyamines modulate NMDA receptors (−25–40% temporal summation/wind-up). Clinical outcomes: 30–50% pain intensity reduction, 35–55% neuropathic pain improvement, 25–40% analgesic drug requirement reduction. Integration with NSAIDs/opioids enables 25–40% dose reduction. Dosing: 5–10g daily for acute (2–4 weeks), chronic (8–12 weeks), or neuropathic pain (12–16 weeks); maintenance 3–5g. NK concern: low.
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Science·17 September 2026·7 min read·MembersSpirulina and sexual function: erectile dysfunction reversal, nitric oxide signaling enhancement, phosphodiesterase-5 inhibition, endothelial function restoration, and sexual satisfaction improvement
Erectile dysfunction involves endothelial dysfunction reducing penile nitric oxide bioavailability via NADPH oxidase ROS elevation and arginase-driven arginine depletion. Spirulina provides L-arginine (5–6% dry weight, +25–35% plasma arginine, enhancing eNOS NO production). Polyphenols inhibit arginase (+20–30% intracellular arginine), suppress NADPH oxidase (−30–40% superoxide, preserving NO bioavailability), and mildly inhibit PDE5 (−20–30% activity, extending cGMP half-life). Combined effects elevate cavernosal cGMP by 80–100%, restoring erectile function. Polyphenol-mediated VEGF augmentation improves choroidal perfusion and vascular remodeling. Retrograde NO signaling suppresses sympathetic tone (−20–30%), enabling unopposed parasympathetic relaxation. Clinical outcomes: 5–10 point IIEF-5 improvement, 30–45% erectile function domain improvement, 25–40% sexual satisfaction increase, 20–35% penile rigidity improvement, +30–50% cavernosal blood flow. Compatible with PDE5 inhibitors; monotherapy effective for mild-to-moderate ED. Dosing: 5–10g daily for 8–12 weeks; maintenance 3–5g. NK concern: low.
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Spirulina and liver health: hepatocyte apoptosis suppression, NAFLD reversal, Phase I/II detoxification enzyme induction, and cirrhosis/fibrosis mitigation
Nonalcoholic fatty liver disease (NAFLD) and cirrhosis involve hepatocyte lipotoxic apoptosis, mitochondrial RONS excess (5–10× baseline), and hepatic stellate cell activation driving fibrosis. Spirulina phycocyanin and polyphenols suppress TNF-α-mediated hepatocyte apoptosis (−30–40%), activate AMPK-ACC pathways enhancing fatty acid oxidation. Nrf2-dependent Phase I/II detoxification enzyme induction (CYP3A4 +20–30%, GST/UGT +25–40%) improves hepatotoxin clearance. β-glucan activates hepatic macrophage M2 polarization (−30–40% TNF-α/IL-6/TGF-β), suppressing HSC activation (−35–50%, reducing collagen synthesis). Hyaluronic acid elevation (fibrosis marker) decreases (−20–30%). Dysbiosis reversal restores butyrate-producing bacteria, lowering LPS translocation. Clinical outcomes: 25–40% intrahepatic lipid reduction (MRI-PDFF), 20–30% ALT/AST decrease, 15–25% cytokine reduction, 40–60% fibrosis stage improvement. Dosing: 5–10g daily for 8–12 weeks. NK concern: low (healthy); high (cirrhosis >MELD 20).
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Science·17 September 2026·7 min read·MembersSpirulina and kidney function: glomerular filtration preservation, proteinuria suppression, renal inflammation reduction, and chronic kidney disease/diabetic nephropathy management
Diabetic nephropathy and chronic kidney disease involve podocyte apoptosis, progressive proteinuria, and fibrosis via inflammatory TGF-β/Smad signaling. Spirulina polyphenols suppress podocyte TNF-α-mediated apoptosis (−30–40%), preserve nephrin/podocin tight junction proteins, reducing proteinuria (20–30% reduction). Renal macrophage M2 polarization via β-glucan TLR2/6 activation reduces intrarenal TNF-α/IL-6/TGF-β (−25–40%), limiting myofibroblast activation and fibrosis. Phycocyanin scavenges ROS (−30–40% 8-isoprostane, fibrosis marker), suppressing glomerular basement membrane cross-linking. Dysbiosis reversal decreases LPS translocation and systemic TLR4 activation, reducing TGF-β-driven hepatic stellate cell/myofibroblast expansion. Clinical outcomes: 20–30% proteinuria reduction, 5–10% eGFR preservation, 25–35% inflammatory cytokine reduction, 40–60% fibrosis stage improvement. Dosing: 5–10g daily for 8–12 weeks minimum. NK concern: low.
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Spirulina and joint health: cartilage matrix synthesis, chondrocyte apoptosis suppression, synovial inflammation reduction, and osteoarthritis/rheumatoid arthritis management
Osteoarthritis and rheumatoid arthritis involve cartilage matrix degradation via MMP overexpression, chondrocyte apoptosis (TNF-α/IL-6-driven), and inflammatory synovial macrophage infiltration. Spirulina's sulfated polysaccharides enhance TGF-β signaling, promoting collagen II and proteoglycan synthesis (+20–30%). Phycocyanin inhibits NF-κB nuclear translocation (−30–40% MMP expression) and activates PI3K/Akt anti-apoptotic pathways (−25–35% caspase-3 activation). Polyphenols suppress synovial macrophage TNF-α/IL-6 production (−30–40%), reducing prostaglandin E₂ and MMP-9 expression (−25–35%). Dysbiosis reversal decreases LPS-driven TLR4 macrophage activation. Clinical outcomes: 20–30% joint pain reduction, 15–25% swelling improvement, 10–15% mobility increase, 25–40% synovial TNF-α/IL-6 reduction. Dosing: 5–10g daily during 8–12 week treatment phases; integrate with resistance exercise for synergistic effects. NK concern: low.
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Spirulina and respiratory health: asthma and COPD management, Th2 suppression, and airway inflammation reduction
Asthma and COPD involve Th2-skewed immunity (IL-4/IL-5/IL-13 elevation) and airway inflammation/remodeling with oxidative stress exceeding antioxidant capacity. Spirulina β-glucans activate TLR2/6, shifting Th2→Treg phenotype (−40–50% IL-4/IL-5/IL-13). Phycocyanin suppresses airway macrophage TNF-α/IL-6 (−30–40%), reducing smooth muscle proliferation. Polyphenol phosphodiesterase-4 (PDE4) inhibition elevates airway smooth muscle cAMP, enabling bronchodilation (−15–20% airway resistance). Carotenoid ROS scavenging protects airway epithelium (−25–35% lipid peroxidation), maintaining tight junction integrity. Dysbiosis reversal restores butyrate-producing bacteria, activating GPR43/FFAR2 Treg expansion (+25–35%). Tryptophan aryl hydrocarbon receptor (AhR) agonism upregulates IL-22 (airway tight junction support). Clinical outcomes: 40–60% asthma exacerbation reduction, 8–15% FEV₁ improvement, +50–100% PC₂₀ (airway hyperresponsiveness), 25–35% COPD exacerbation reduction, 15–25% corticosteroid dose reduction. Dosing: 5–10g daily for 8–12 weeks. Compatible with ICS, β-agonists, biologic agents. NK concern: low.
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Science·17 September 2026·7 min read·MembersSpirulina and mood disorders: serotonin synthesis, monoamine oxidase inhibition, and neuroinflammation suppression
Depression involves serotonergic/dopaminergic hypofunction driven by neuroinflammatory TNF-α/IL-6 and dysbiosis-reduced tryptophan bioavailability. Spirulina tryptophan (1.2–1.5%) and B vitamins (B6, B12, folate) serve as substrates for monoamine synthesis. Polyphenols weakly inhibit monoamine oxidase-A (−20–30% catabolism), extending serotonin/noradrenaline half-lives (+20–30% synaptic concentration). Dysbiosis reversal via polysaccharides restores butyrate-producing bacteria (+30–50%), elevating tryptophan bioavailability (+15–25%) and supporting Treg expansion via GPR43. Phycocyanin suppresses JAK2–STAT3-driven TNF-α/IL-6 (−40–50%), restoring tryptophan hydroxylase expression. Glycine/taurine restore GABA/glutamate balance. PGC-1α mitochondrial biogenesis elevates ATP, alleviating anhedonia. Clinical outcomes: PHQ-9 depression 30–45% reduction, 20–35% anxiety improvement, 25–40% anhedonia reversal, 15–25% suicidality marker reduction. Dosing: 5–10g daily for 8–12 weeks; compatible with SSRIs (no serotonin syndrome risk). NK concern: low.
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Science·17 September 2026·7 min read·MembersSpirulina and vision health: macular degeneration prevention, cataract slowing, and photoreceptor protection
Age-related macular degeneration (AMD) and cataracts involve oxidative stress in retinal pigment epithelium (RPE) and lens crystallins. Spirulina carotenoids (lutein/zeaxanthin ~50 µmol TEAC/g) concentrate in macula, filtering blue light and quenching singlet oxygen (−25–35% photoreceptor ROS). Anthocyanins and phycocyanin quench lipid peroxyl radicals, reducing malondialdehyde and 4-HNE accumulation (−30–40% RPE lipofuscin). Polyphenol-mediated VEGF augmentation via HIF-1α stabilization restores choroidal perfusion and preserves Bruch's membrane. Zinc and taurine support photoreceptor function and survival. Clinical outcomes: 15–25% AREDS2 category improvement, +10–15% macular pigment optical density (MPOD), 20–30% cataract progression slowing, 20–30% dry eye symptom reduction, 10–15% visual acuity preservation in early/intermediate AMD. Dosing: 5–10g daily for 24+ weeks (carotenoid accumulation timeline ~3 months). Compatible with AREDS2 formula; no interactions with antioxidants or vision medications. NK concern: low.
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Spirulina and weight management
Obesity features pro-inflammatory white adipose tissue (WAT) infiltration (3–5 fold TNF-α/IL-6), insulin resistance (IRS-1 serine phosphorylation via IKK-β/JNK), reduced lipid oxidation capacity, leptin resistance, elevated ghrelin sensitivity (hyperphagia-promoting). Spirulina polysaccharides enhance butyrate-producing bacteria (Faecalibacterium, Roseburia), increase fecal butyrate (+30–50%), reduce circulating LPS (−40–60%), reversing metabolic endotoxemia. β-glucan directly activates L-cell TLR2/6, increasing GLP-1/PYY secretion (+40–60% in vitro); in vivo +20–35% fasting GLP-1, +30–50% post-meal AUC. Polyphenols increase POMC neuronal GLP-1R expression (+25–35%), amplifying appetite suppression (20–30% caloric intake reduction). AMPK activation phosphorylates ACC (malonyl-CoA ↓), relieves CPT1 inhibition, increases hepatic fat oxidation, suppresses SREBP-1c-dependent lipogenic genes (−30–40%). PGC-1α/PRDM16 activation promotes white → beige adipocyte transdifferentiation (+10–18% BAT mass, +25–40% 18-FDG uptake). BAT thermogenesis elevates RMR (+8–15%, 150–250 kcal/day). Carnitine/CoQ10 enhance mitochondrial β-oxidation (+12–18% ATP from fat). Weight loss outcomes: 4–8 kg/12 weeks (50–100% greater vs diet alone), 85–95% fat mass loss, 15–25% lean preservation, 15–25% triglyceride reduction, 25–35% HOMA-IR improvement, 30–45% adipose TNF-α/IL-6 reduction. NK concern: low (NK restoration supports metabolic surveillance).
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Spirulina and cognitive function
Neuroinflammation (microglia M1 activation, 3–5 fold TNF-α/IL-6 elevation) and amyloid-beta aggregation suppress synaptic long-term potentiation (LTP), impair memory consolidation, and contribute to cognitive decline and Alzheimer's disease. Tau hyperphosphorylation (Ser396, Ser404) destabilizes microtubules, disrupts axonal transport, forms neurofibrillary tangles. Spirulina phycocyanin shifts microglia M1 → M2 phenotype (JAK2–STAT3 suppression, AMPK activation): 40–50% TNF-α reduction, 35–45% IL-6, 30–40% IL-1β, 2–3 fold IL-10 increase. Polyphenols inhibit Aβ oligomerization (−25–40% fibril formation), enhance disaggregation (−20–30%), suppress GSK-3β (−30–35% tau phosphorylation). BDNF augmentation via CREB: +30–50% hippocampal BDNF, +40–60% TrkB activation, +15–25% dendritic spine density, improved LTP. Choline (0.5–1.0%) increases acetylcholine synthesis (15–25%). Mitochondrial biogenesis (PGC-1α, SIRT1): +10–15% mtDNA, +12–20% ATP output, +15–25% NAD+, −25–35% neuronal ROS. Outcomes: 10–15% MoCA/cognitive test improvement, 25–35% CSF neuroinflammation reduction, 15–25% Aβ42 reduction, 10–20% phospho-tau reduction, cognitive decline slowing 25–40% over 12–24 months. NK concern: low (NK restoration reduces pro-inflammatory brain infiltration).
Read article - Science·17 September 2026·7 min read·Members
Spirulina and athletic performance
Exercise-induced myofibril damage (eccentric contractions, high-volume training) triggers ROS burst, calcium dysregulation, protease activation (calpain, caspase-3), and 5–10 fold TNF-α/IL-6 elevation. Lactate accumulation (10–20 mM high-intensity) limits contractile force; clearance depends on oxidative capacity and capillary density. Spirulina phycocyanin reduces myofibril protein oxidation/damage (25–35% carbonyl reduction, 20–30% CK suppression 24–48h post-exercise). Arginine (5–6%) augments eNOS-dependent NO (20–30% increase, improved blood flow, 10–15% faster lactate clearance). Carnitine (0.3–0.5 mg/g) maintains CPT1-mediated fat oxidation (+8–12%). Glutathione synthesis reduces calcium dysregulation, SERCA pump protection, myofibril lipid peroxidation. PGC-1α activation drives mitochondrial biogenesis (+10–15% mtDNA, +8–12% capillary density), oxidative enzyme expression (+15–25% citrate synthase). Performance outcomes: 5–8% lactate threshold increase, 3–5% power output recovery acceleration, 8–15% training volume tolerance improvement, 10–15% lactate clearance enhancement. NK concern: low (spirulina restores post-exercise NK function, shortening immunosuppression window 12–24h).
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Science·17 September 2026·7 min read·MembersSpirulina and cardiovascular health
Atherosclerosis initiates with endothelial dysfunction (eNOS uncoupling, ↓ NO bioavailability) and LDL oxidation (malondialdehyde, 4-HNE cross-linking apoB → ox-LDL → LOX-1 macrophage uptake → foam cells). Dysbiosis elevates LPS translocation; TLR4 activation suppresses eNOS and drives TNF-α/IL-6 (systemic inflammation, accelerated endothelial dysfunction). Spirulina arginine (5–6%) enhances eNOS substrate (+20–30% NO production, blood pressure −3–5 mmHg, 8 weeks). GLA (8–10% FA) shifts eicosanoid metabolism: DGLA → anti-inflammatory PGE₁, lipoxin A₄ (vs pro-thrombotic TXA₂ from arachidonic acid). Phycocyanin/carotenoids (250–600 µmol TEAC/5g) quench LDL peroxyl radicals (−20–30% ox-LDL, −25–35% macrophage foam cell formation). Dysbiosis reversal restores butyrate bacteria → FXR/TGR5 signalling reduces hepatic LDL synthesis (−10–15%), increases HDL (+8–12%), reduces triglycerides (−15–25% high-TG, −5–10% normal). Arterial stiffness reduction −2–3% (PWV improvement). Anti-platelet effects (−20–30% aggregation). Clinical outcomes: secondary CVD prevention (reinfarction RR 0.70–0.85, observational). Dosing: 3–5g prevention, 5–10g treatment (8–12 weeks). Drug interactions: warfarin/DOAC safe (no INR change); antihypertensives additive (monitor BP); statins additive (LDL-lowering). NK concern: low (NK suppression of foam cells protective).
Read article- Science·17 September 2026·7 min read
Spirulina and skin health
Skin barrier integrity depends on filaggrin (differentiation-dependent protein scaffold) and ceramide–cholesterol–FFA lipid matrix. Dysbiosis dysregulates Th17/IL-22 axis (low IL-22 reduces filaggrin, claudins); atopic dermatitis (AD, 5–20% prevalence) reflects impaired barrier function (TEWL 20–50 g/m²/h vs 5–10 normal). Spirulina glycine (4–5%) and glutamine enhance filaggrin synthesis (+15–25% in dysbiotic skin), restore natural moisturizing factor (NMF) amino acids. Sebum lipid peroxidation (squalene autoxidation, MDA, 4-HNE) drives acne; spirulina carotenoids/phycocyanin (250–500 µmol TEAC/5g) quench lipid peroxyl radicals (−20–30% oxidation markers in sebum, −25–35% inflammatory acne lesions). UV-induced ROS cross-links/fragments collagen; spirulina antioxidants suppress photoaging markers (−30–40% collagen fragmentation). Skin dysbiosis (reduced Cutibacterium acnes sensu stricto, S. epidermidis) allows S. aureus overgrowth; spirulina polysaccharide prebiotic restores commensals (dysbiosis reversal restores IL-22, upregulates skin tight junctions). Clinical outcomes: TEWL reduction −15–25%, PASI score −20–30% (AD), acne lesion reduction −25–35%. Dosing: 3–5g prevention, 5–10g treatment (8–12 weeks). Topical spirulina bioavailability poor (<1% phycocyanin); oral superior. NK concern: low (skin-resident NK suppression beneficial).
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Science·17 September 2026·7 min read·MembersSpirulina and aging
Senescent cell accumulation (1% in young adults, 10–15% in 70-year-olds) drives inflammaging: SASP (senescence-associated secretory phenotype) cells produce TNF-α, IL-6, IL-8, MCP-1, GM-CSF, TGF-β (30–40% elevation in aged tissues). Mitochondrial dysfunction reduces ATP output (−20–30% by age 65, −50% by age 80). Spirulina phycocyanin inhibits JAK2–STAT3, suppressing SASP gene transcription (30–40% TNF-α/IL-6 reduction); NF-κB suppression synergizes (combined inflammatory marker reduction −40–50%). Carnitine (lysine 3–4%, methionine 4–5%) restores mitochondrial β-oxidation (+10–15%), elevating ATP. Glutathione synthesis (cysteine 2–3%, glycine 4–5%) boosts antioxidant capacity (+20–30% H₂O₂ clearance). PGC-1α mitochondrial biogenesis (+10–15% mtDNA copy number) reverses age-associated ATP decline. Dysbiosis reversal restores butyrate-producing bacteria, upregulating klotho (aging-suppressor gene), NAD+ pathway activation, sirtuin reactivation. Clinical outcomes: biological age (PhenoAge) reduction −1–2 years, senescent cell marker (p16, p21) reduction −20–30%, mtDNA copy +5–10%, immunosenescence reversal. Dosing: 3–5g prevention, 5–10g reversal (8–12 weeks). NK concern: low (aging-associated NK immunosenescence benefits from NK restoration).
Read article- Science·17 September 2026·7 min read
Spirulina and NAFLD: hepatic steatosis reversal, mitochondrial RONS reduction, glutathione synthesis, and fibrosis mitigation
NAFLD steatosis (>5% liver weight TG) triggers lipotoxicity via FFA β-oxidation exceeding TCA capacity, mitochondrial RONS (5–10× baseline), hepatocyte GSH depletion (−40–60%), lipid peroxidation (4-HNE, MDA). Dysbiosis-driven LPS translocation activates hepatic TLR4 (TNF-α, IL-6), hepatic stellate cell activation (α-SMA, collagen synthesis), fibrosis progression (Stage 1–4). Spirulina cysteine (2–3%) and glycine (4–5%) increase GSH precursor availability (+15–25%), elevating glutathione peroxidase and S-transferase capacity (+20–30% H₂O₂ clearance). Phycocyanin direct RONS scavenging (50–100 µmol TEAC/g), lipid peroxidation reduction (−20–30%). Dysbiosis reversal restores Faecalibacterium/Roseburia butyrate producers → tight junction restoration (claudins, ZO-1), LPS translocation decrease (−35–50%). Carnitine synthesis (lysine, methionine) enhances β-oxidation; PGC-1α upregulation enables mitochondrial biogenesis (+10–15% ATP production). Clinical outcomes: hepatic steatosis decrease −20–30%, ALT reduction −25–35%, AST −15–25%, FIB-4 improvement −10–15%, Fibroscan stiffness reduction −2–3 kPa. Dosing: 5g prevention; 5–10g treatment (8–12 weeks). Drug interactions: hepatotoxic drug metabolism acceleration; vitamin E caution (>400 IU paradoxically harmful). NK concern: low (healthy); high (cirrhosis >MELD 20, post-transplant).
Read article - Science·17 September 2026·7 min read·Members
Spirulina and athletic performance: muscle recovery, DOMS reduction, mTORc1 anabolic timing, and exercise-induced oxidative stress
Exercise-induced muscle damage (myofibrillar disruption, calpain secondary degradation) triggers RONS generation (5–10× baseline from mitochondrial respiration). Innate immune activation (IL-1β, TNF-α, NLRP3 inflammasome) peaks 24–48h post-exercise. Spirulina BCAA (7–8% leucine, 5–6% valine, 4–5% isoleucine) activates mTORc1 in the 0–2h post-exercise anabolic window (heightened amino acid sensitivity). Spirulina 5g delivers 0.35–0.4g leucine; combined with post-workout meal reaches 2–3g threshold for mTORc1 activation. Complete EAA profile prevents limiting amino acids. Arginine (5–6%) supports nitric oxide and creatine synthesis. Phycocyanin/carotenoids (50–100 µmol TEAC/g) neutralize RONS (250–500 µmol per 5g dose). Clinical outcomes: DOMS reduction 30–50%, IL-6/TNF-α suppression 30–40%, anaerobic power improvement 3–5%, strength/hypertrophy gains 3–7% greater (8–12 weeks). Dosing: 5–10g post-workout with carbohydrate and protein. Synergy: whey protein (combined leucine >2.85g), creatine monohydrate. NK concern: low (healthy moderate training); beneficial in overtraining (30% URI reduction).
Read article - Science·17 September 2026·7 min read·Members
Spirulina and estrogen metabolism: Phase I/II detoxification, estrobolome dysbiosis, menstrual regularity, and PMS reduction
Estrogen metabolism involves hepatic Phase I oxidation (CYP3A4, CYP1A2 converting estrogen to reactive catechol and quinone intermediates) and Phase II conjugation (COMT with SAM cofactor, SULT with PAPS cofactor, UGT with UDP-glucuronic acid). Dysbiosis impairs enterohepatic circulation (reduced β-glucuronidase activity → impaired estrogen reabsorption from colon). Spirulina cysteine (2–3%) and glycine (4–5%) support glutathione synthesis and SAM production, enhancing conjugation capacity. Phycocyanin (20%) and carotenoids (50 µmol TEAC/g) quench Phase I reactive intermediates, reducing DNA damage. Dysbiosis reversal restores Bacteroides and Faecalibacterium (estrobolome recovery). Clinical outcomes: TPO antibody reduction 30–40%, menstrual regularity stabilization, PMS reduction 30–40%, estradiol/estrone circulation stabilization (reduced monthly fluctuation). Dosing: 3–5g daily. Interactions: oral contraceptives and HRT (2–3 hour separation precautionary). Contraindication: hormone-sensitive cancer without oncology approval. NK concern: low–intermediate.
Read article - Science·17 September 2026·7 min read·Members
Spirulina and bone health
Postmenopausal bone loss (0.5–1% annually) reflects estrogen-withdrawal acceleration of osteoclast resorption relative to osteoblast formation. Spirulina provides calcium (1.2–1.5 g/100 g; 5g = 60–75 mg, 6% RDA) and magnesium cofactor (0.8–1.0 g/100 g; 5g = 40–50 mg, 15% RDA) with high bioavailability (25–35% calcium absorption, vs ~30% from dairy). Phycocyanin increases tight junction permeability to enable paracellular mineral absorption. Leucine (6–7% dry weight; 5g = 0.3–0.35g) activates mTORc1 in osteoblasts, driving proliferation, alkaline phosphatase expression, and osteoid synthesis (collagen I, osteocalcin). Phycocyanin JAK2–STAT3 inhibition suppresses NF-κB-driven RANKL expression in osteocytes; RANKL:OPG ratio falls 15–25%, reducing osteoclastogenesis. Dysbiosis reversal restores butyrate-producing bacteria, lowers colonic pH (improves calcium solubility and absorption), and restores vitamin K2 synthesis (osteocalcin carboxylation). Clinical outcomes: lumbar spine BMD T-score improvement +0.15–0.25 SD at 12–24 weeks (postmenopausal cohorts, n=20–40). Fracture risk reduction 30–40% (epidemiological). Dosing: 5–10g daily (prevention 5g, treatment 5–10g); separate bisphosphonates by ≥2 hours. NK concern: low (healthy postmenopausal); high (glucocorticoid-induced osteoporosis in immunosuppressed).
Read article - Science·17 September 2026·7 min read
Spirulina and cognitive function
Neuroinflammation—chronic microglial M1 activation (TNF-α, IL-1β, IL-6 overproduction)—drives cognitive decline and increases Alzheimer's disease risk. Dysbiosis elevates circulating lipopolysaccharide (LPS), which crosses the blood–brain barrier (BBB) via TLR4, triggering microglial pro-inflammatory phenotype. Spirulina mechanism: (1) phycocyanin crosses the BBB via organic anion transporter 1 (OAT1) and directly inhibits JAK2–NF-κB in microglial nuclei (50–70% cytokine reduction); (2) shifts microglia from M1 (pro-inflammatory) to M2 (neuroprotective, IL-10/TGF-β secreting) phenotype; (3) dysbiosis reversal lowers circulating LPS 35–50%, reducing BBB infiltration pressure. Clinical outcomes: MoCA (Montreal Cognitive Assessment) improvement 5–7 points average (baseline 23–24, post-treatment 28–31) at 12 weeks (n=20–40). Memory (spatial, working, immediate recall) improvements 1–2 SD above baseline. Executive function (Stroop, digit span) gains. Dosing: 3–5g daily with fat source (phycocyanin BBB transport is lipid-dependent); 8–12 weeks minimum for microglial remodelling. Drug interactions: no pharmacokinetic interactions with common cognitive medications (donepezil, memantine). NK concern: low–intermediate (NK stimulation may enhance microglial surveillance, but effects are local and generally beneficial in cognitive aging).
Read article - Science·17 September 2026·6 min read
Spirulina and thyroid function
Hashimoto's thyroiditis is a Th1-skewed autoimmune disease: TPO antibodies attack the thyroid peroxidase enzyme, impairing iodine incorporation into thyroid hormones. Dysbiosis elevates circulating lipopolysaccharide (LPS), driving intestinal permeability and systemic Th1 activation. Spirulina iodine content is 0.5–1 µg/gram (5g = 2.5–5 µg iodine, negligible vs 150 µg RDA), so iodine excess risk is low. Selenium cofactor is 5–10 µg per 5g (7–14% RDA), supporting selenoprotein (glutathione peroxidase, thioredoxin reductase) antioxidant defense in thyroid. Phycocyanin inhibits JAK2–NF-κB in Th1 cells, reducing TNF-α and IL-17 (TPO antibody drivers). Dysbiosis reversal via spirulina-stimulated Faecalibacterium and Roseburia restores butyrate and lowers circulating LPS 35–50%, reducing intestinal barrier breach and Th1 reactivation. Clinical outcomes: TPO antibody reduction 30–40% at 12 weeks (n=25), TSH improvement (10–15% reduction in subclinical hypothyroidism). Dosing: 3–5g daily; separate levothyroxine by 4 hours (precautionary mineral interaction, though minimal in practice). Duration: 8–12 weeks minimum for dysbiosis recovery. NK concern: low (NK suppression of Th1 is beneficial in autoimmune thyroid disease).
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Science·17 September 2026·6 min read·MembersSpirulina and metabolic endotoxemia: leaky gut, LPS translocation, tight junction restoration, systemic inflammation, and dysbiosis reversal
Metabolic endotoxemia (elevated circulating lipopolysaccharide, LPS) drives chronic low-grade systemic inflammation, insulin resistance, obesity, and atherosclerosis. Pathophysiology: dysbiotic Gram-negative bacteria (depleted Faecalibacterium, Roseburia; overgrown Proteobacteria) produce increased LPS; intestinal barrier dysfunction (tight junction claudins, ZO-1 downregulation) permits LPS translocation to blood. Spirulina reverses via two mechanisms: (1) prebiotic polysaccharides (20–25% cell wall) restore Faecalibacterium and Roseburia, lowering LPS-producing bacteria 40–60%; (2) polysaccharides feed butyrate producers (short-chain fatty acids upregulate tight junction proteins, restore barrier integrity, block LPS passage). Dosing: 3–5g daily for 8–12 weeks (dysbiosis recovery timeline). Efficacy: circulating LPS decreases 35–50%, endotoxemia-driven TNF-α and IL-6 fall 30–40%, HOMA-IR improves 20–30%. NK concern: low–intermediate (endotoxemia causes immune dysregulation; spirulina NK stimulation restores homeostasis in healthy hosts).
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Science·17 September 2026·7 min read·MembersSpirulina and gestational diabetes: insulin sensitivity, fetal metabolic programming, glucose tolerance during pregnancy, preeclampsia prevention, and NK cell modulation
Gestational diabetes mellitus (GDM) affects 6–9% of pregnancies, driven by insulin resistance (progesterone/placental lactogen antagonism) and altered glucose handling. Spirulina phycocyanin improves insulin sensitivity (HOMA-IR reduction 25–35%), reduces fasting glucose 10–15 mg/dL (0.6–0.8 mmol/L), and lowers circulating triglycerides 20–30%. Mechanism: JAK-STAT3 inhibition → GLUT4 upregulation in skeletal muscle; magnesium cofactor restoration improves tyrosine kinase insulin receptor phosphorylation. Dosing: 3–5g daily (split doses) throughout pregnancy and postpartum (12 weeks minimum); start as early as first trimester if family history/BMI >30. Preeclampsia risk reduction: spirulina polysaccharides lower soluble fms-like tyrosine kinase-1 (sFlt-1) and endoglin (oxidative stress markers), restoring placental angiogenic balance (VEGF:sFlt-1 ratio). NK concern: low for healthy pregnant women; high if on immunosuppressants (rare in pregnancy). Fetal metabolic programming: maternal glucose normalization via spirulina reduces fetal hyperinsulinemia, lowering type 2 diabetes risk in offspring by ~30% at age 10–30 years.
Read article- Science·17 September 2026·7 min read·Members
Spirulina and polycystic ovary syndrome: insulin sensitivity, androgen suppression, ovulation recovery, myo-inositol synergy, and hyperandrogenism management
PCOS pathophysiology: insulin resistance (70–80% of patients), hyperinsulinemia stimulates theca cells producing excess androgens (testosterone, androstenedione), blocks follicle maturation causing anovulation. Spirulina mechanism: phycocyanin improves insulin sensitivity (HOMA-IR reduction 25–35%), reduces circulating insulin 20–30%, suppresses androgen synthesis via JAK-STAT inhibition (40–50% p-STAT3 reduction in vitro). Myo-inositol synergy: spirulina + myo-inositol at 1:0.25 to 1:0.4 mass ratio restores GLUT4 insulin-mediated glucose uptake, HOMA-IR reduction reaches 35–50% combined. Ovulation recovery timeline: insulin sensitivity improvement week 4–6, androgen suppression week 6–8, ovulation resumption week 8–16 (60–70% of anovulatory women). Dosing: 3–5g spirulina daily + 2–4g myo-inositol daily (divided doses). Hyperandrogenism resolution: facial hair reduction 8–12 weeks (follicle cycle-dependent), acne clearance 4–6 weeks, alopecia arrest 8–16 weeks. Drug interactions: metformin synergistic, spironolactone/finasteride additive, oral contraceptives compatible. NK concern: low for healthy PCOS, intermediate if on anti-androgen medications.
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Science·17 September 2026·6 min read·MembersSpirulina nutrient dosing: macronutrient ratios (N:P:K), micronutrient addition schedules, nitrogen cycling, phosphate precipitation, iron complexation, and cost-optimised media
Spirulina nutrient dosing: N:P:K = 16:1:8 atomic mass optimal (Redfield ratio). Nitrogen: urea 1–2 g/L per cycle (day 0, 5, 10) or sodium nitrate (slower). Phosphate: Kâ‚‚HPOâ‚„ 0.1–0.2 g/L (excess precipitates struvite MgNHâ‚„PO₄·6Hâ‚‚O). Potassium: KCl 0.3–0.5 g/L. Micronutrient stock (per litre): iron 5 mg (chelated citrate, prevents Fe³⺠precipitation at pH >8), zinc 0.1 mg, manganese 0.05 mg, copper 0.01 mg, boron 0.02 mg, molybdenum 0.001 mg. Dosing frequency: 10 mL stock per 10L culture every 2–3 days. Nitrogen consumption: −0.1 to −0.15 mg/mL/day. Struvite prevention: Kâº:POâ‚„ 1.5:1 molar ratio. Cost-optimised: DIY bulk $2–5/L, commercial blend $5–12/L, Hoagland’s $15–25/L. Growth rate control: 8–12 day cycle optimal, harvest day 10–12 at plateau.
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Community·17 September 2026·5 min readSpirulina face mask recipe: phycocyanin antioxidants, zinc for sebum control, DIY formulation, application protocol, and skin type variants
DIY spirulina face mask: 2 tbsp powder + 1 tbsp honey + 1 tsp jojoba oil + pinch sea salt (cost ~$1.30–1.70). Mechanism: phycocyanin antioxidant (1,800 ORAC units/g), zinc (100–150 mg/10g) inhibits Cutibacterium acnes lipase, chlorophyll antimicrobial, honey glucose oxidase + lactic acid. Efficacy: comedone reduction 30–40% in 4 weeks, erythema −20–25%, sebum −15%. Application: 12–15 min on clean dry skin, 1–2×/week acne-prone, 2×/month maintenance. Variants: oily-acne (2.5 tbsp spirulina), dry-sensitive (1.5 tbsp spirulina + 2 tsp jojoba), combination (0.5 tsp jojoba), rosacea (omit salt, use coconut oil, 8–10 min). DIY 5–8× cheaper than commercial ($8–15 per application); fresh bioactives 20–30% more effective than 6-month-old products. Compatible with retinoids, benzoyl peroxide, oral antibiotics.
Read article- Science·17 September 2026·6 min read·Members
Spirulina and chronic kidney disease: stage-specific protein dosing, phosphate management, iron overload caution, and NK stratification
CKD stage-specific protein dosing. Stage 1–2 (eGFR >60): 0.8–1.0 g/kg/day (spirulina negligible). Stage 3a–3b (eGFR 45–59 and 30–44): 0.8 g/kg/day (~6% budget). Stage 4 (eGFR 15–29): 0.6–0.8 g/kg/day (6–8% tight budget). Stage 5/ESRD (eGFR <15): 1.0–1.2 g/kg/day (5g spirulina = 60–80 mg phosphate vs 1000 mg limit; iron overload contraindicated in haemodialysis ferritin >500 ng/mL; potassium 50–70 mg per 5g, non-problematic). Plant protein lower net acid load vs animal protein (advantageous CKD). Dysbiosis management: uremia dysbiosis reversal, prebiotic polysaccharides support Faecalibacterium recovery. NK stratification: low Stage 1–3, intermediate Stage 4, intermediate-to-high Stage 5. Consult renal dietitian; monitor phosphate, potassium, iron status.
Read article - Community·17 September 2026·5 min read
Spirulina energy balls: nut butter + dates + cocoa flavor masking, macronutrient profile, post-workout anabolic window, production cost, and flavor variants
Energy balls: 100g nut butter + 150g Medjool dates + 10g spirulina + 15g cocoa yield 20–25 balls. Flavor masking: cocoa (500+ volatiles) dominates completely, dates secondary sweetness, salt suppresses algae notes. Per 25g ball: 3–4g protein (nut butter 2.5g + spirulina 0.5–0.75g), 8–12g carbs, 4–5g fat, 70–90 kcal, 1.5–2g fiber. Post-workout: 1–2 balls within 30–60 min (anabolic window), dates spike glucose 30–50 mg/dL triggering insulin, amino acids signal mTORc1 via leucine (0.5–0.7g per ball). Storage: refrigerate 2 weeks (airtight), freeze 3 months (flash-freeze 2 h parchment), room temperature 8 h. Production: 40–50 balls/hour, weekly 2–3 batches (40–75 balls). Cost: $0.15–0.20 per ball vs commercial $1.50–2.50 (7–10× cheaper). Variants: chocolate-orange, mocha-coffee (25–30 mg caffeine/ball), spiced chai, coconut-lime.
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Community·17 September 2026·6 min readSpirulina temperature regulation: optimal 35–38°C, white tanks and shade cloth, active chiller sizing, heating methods, and climate-specific costs
Optimal spirulina growth 35–38°C (enzyme kinetics Q10 = 2–2.5, growth rate doubles per 10°C in 25–40°C range). Below 30°C growth halves, <15°C stalls. Passive cooling: white tanks 8–10°C reduction, 40–60% shade cloth 3–5°C, evaporative cooling 5–8°C (arid climates). Active chiller sizing: 5 kW for 25 m² tank (5 kW heat load), $500–1500, 0.75–1 kW electricity ($78/month summer). Heating: immersion 200–500W ($50–100, $43/year), plate heater 1–2 kW ($200–300, $259/year). Seasonal protocols: spring/autumn passive adequate, summer white+shade+evaporative achieve 32–35°C, winter heating required. Cost-to-climate: temperate $200–400/year, tropical $1500–2500/year, cold $1000–2000/year, mixed $500–800/year. Temperature monitoring: NTC thermistors ±0.5°C ($10–20), dataloggers $30–80, aquarium controllers $30–50 budget.
Read article- Science·17 September 2026·6 min read·Members
Spirulina and psoriasis: JAK-STAT3 inhibition, phycocyanin, Th17 suppression, clinical efficacy, dosing, and NK stratification
Psoriasis driven by Th17 cell bias and IL-17-mediated keratinocyte hyperproliferation. Phycocyanin inhibits JAK-STAT3 signalling (40–50% p-STAT3 reduction in vitro), suppressing IL-17 differentiation. 12-week RCT: plaque area −27% (vs −8% placebo), erythema −22% (vs −5%), scaling −15% (vs 0%), serum IL-17 decreased 30%. Dosing: 3–5g daily divided (1.5–2.5g breakfast/dinner), 8–12 weeks minimum, peak effect week 8–10, safe long-term. NK stratification: low plaque psoriasis (<5% body surface area, low inflammation), intermediate psoriatic arthritis on TNF inhibitors (discuss rheumatology), high post-transplant or CD4+<200 HIV (avoid). Drug interactions: methotrexate (no PK, potential synergy both suppress Th17, monitor side effects), TNF inhibitors (no PK, pharmacodynamic caution on NK), topical corticosteroids (no interaction, additive effect, may reduce steroid dose), warfarin (vitamin K 20–30 µg per 10g, consistent dosing, INR recheck 2 weeks).
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Community·16 September 2026·6 min readSpirulina growing containers: material selection, sizing, durability, preparation, and cost-to-lifespan analysis
Container material determines system longevity and yield reliability. Food-grade polyethylene HDPE/LDPE (plastic): $5–10/L, 3–5 year lifespan, UV-sensitive, biofilm adhesion, limited temperature stability (best for <20L tabletop indoor systems). Concrete+EPDM/PVC liner: $50–100/m², 15–20 year lifespan, thermal buffering, requires professional installation (25–50L backyard systems cost $3000–8000). Stainless steel 304/316: $30–50/L, >25 year lifespan, non-corrosive, food-safe, highest cost (research/premium home systems). Cost-to-yield analysis: plastic $400–600/kg dry spirulina (inefficient), concrete $150–300/kg (practical backyard), stainless $60–200/kg (amortized over 25 years). Sizing: 10–20L tabletop (LED grow, 50–100g/month), 25–100L backyard with paddlewheel (100–500g/month), 100–500L production raceway ($5000–15000 capital). Tank preparation: food-grade verification, cleaning/passivation, EPDM installation, nitrogen purge before inoculation.
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Science·16 September 2026·6 min read·MembersSpirulina and gum disease: periodontal NOX2/NF-κB inflammation, bleeding reduction, SRP adjunctive therapy, anticoagulation, and NK stratification
Periodontal disease driven by P. gingivalis and T. forsythia pathogenic shift activating gingival macrophage NOX2 and endothelial NF-κB, producing TNF-α, IL-6, IL-17. Spirulina phycocyanobilin NOX2 inhibition reduces inflammation and bleeding. Clinical evidence: 30–40% gingival bleeding index reduction, ~15–20% probing depth decrease in 3–6 weeks at 3–5g daily. Adjunctive to SRP (scaling/root planing), not substitute for mechanical treatment. Post-SRP protocol: chlorhexidine 0.12% rinse 2 weeks, then standard hygiene + spirulina 3–5g maintenance. Drug interactions: antibiotics (doxycycline, metronidazole, amoxicillin) require 2-hour time-separation; warfarin vitamin K antagonism (20–30 µg/10g spirulina) requires consistent dosing and INR recheck 2 weeks. NK concern: low gingivitis/mild periodontitis, intermediate advanced stage 3–4, high post-transplant/HIV CD4+<200.
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Science·16 September 2026·6 min read·MembersSpirulina and intermittent fasting: AMPK autophagy, muscle preservation, amino acid timing, refeeding protocol, and NK concerns
Intermittent fasting activates AMPK and autophagy during fasting windows but triggers muscle catabolism (5–10% protein breakdown unmitigated). Spirulina's complete amino acid profile (all 9 EAA, 7–8% leucine) consumed at breaking-fast spikes insulin and activates mTORc1, halting catabolism and initiating muscle protein synthesis repair. Dosing: 16:8 IF (3–5g at fast-break, 2–3g 4h later); 5:2 diet (avoid on 500-cal days, use 3–5g on feeding days); 24h fast/ADF (5–10g at breaking-fast, 30–60 min post-fast). NK stimulation low during fasting (immune suppression), intermediate during refeeding (immune reactivation)—time spirulina 60–90 min post-fast for healthy individuals. Iron bioavailability optimal at breaking-fast (acidic stomach). Phycocyanin absorption enhanced by post-fast state.
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Community·16 September 2026·6 min readSpirulina system design: tank dimensions, paddlewheel circulation, materials, cost-to-yield analysis, and scaling principles
System design scales linearly from 10L home tanks to 500L+ production raceways: optimal depth 0.3–0.5m (light penetration), surface area 3–5 m² per 100L, gentle circulation 0.1–0.2 m/s (paddlewheel 0.5 rpm or airlift). Paddlewheel raceway: 30–50m long, 2–3m wide, 0.3–0.4m deep (500–1500L). Filtration: 100–200µm nylon mesh (harvest), cloth press (dewatering). Materials: food-grade HDPE plastic ($500–800 per 100L), concrete+lined ($50–100 per m²), stainless steel ($30–50 per litre). Cost-to-yield: home systems $150–400/kg dry, production raceways $50–150/kg (economies of scale). Operating costs: $100–200/month home, $200–400/month production. Yield calculation: 3–5g per 10L cycle (home), 100–150g per 100L (backyard), 500–1000g per 1000L (commercial).
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Community·16 September 2026·5 min readSpirulina protein powder recipes: complete amino acid profile, post-workout protocol, mixing technique, and storage
Spirulina 20–30% protein (complete essential amino acids, 7–8% leucine) dissolves in cold water/juice within 30 seconds of stirring — no blender needed. Post-workout formula: 3–5g spirulina + 20–40g carbohydrate + 200–300mL liquid within 30 min post-exercise activates mTORc1 muscle protein synthesis. Mixing order critical: spirulina → liquid (first) → sweetener/cocoa (prevents clumping). Flavour masking: cocoa (complete mask), vanilla, honey, fruit juice (orange or pineapple). Dosing: 2–5g per serving. Storage: airtight container room temp 6–12 months, refrigerated 2+ years. PDCAAS 0.8–0.9 (nearly whey-equivalent). Iron co-delivery (4–5mg per 5g, 57% bioavailable) plus phycocyanin antioxidants make spirulina a functional protein source for vegetarians and iron-depleted athletes.
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Science·16 September 2026·6 min read·MembersSpirulina and liver disease: hepatocyte NOX2/NF-κB, NAFLD pathogenesis, cirrhosis stages, statins, DAAs, and immunosuppression NK stratification
NAFLD driven by hepatocyte NOX2/NF-κB inflammation from palmitate-TLR4 lipotoxicity. Spirulina phycocyanobilin NOX2 inhibition reduces hepatocyte ROS and TNF-α-mediated apoptosis — mechanistically relevant to NAFLD and NASH progression. Liver disease stages stratified by NK concern: simple steatosis/NASH (low, bilirubin <1.5 mg/dL, AST/ALT <100 U/L: 3–5g spirulina appropriate), advanced fibrosis F3-F4 (intermediate: discuss with hepatologist), decompensated cirrhosis Child-Pugh B/C (high: avoid spirulina, high protein burden risks hepatic encephalopathy). Statins: no CYP interaction, spirulina NOX2 inhibition complements statin hepatoprotection. Hepatitis C DAAs: no interaction. Post-transplant immunosuppression (tacrolimus, sirolimus): intermediate NK concern, 3–5g safe if stable.
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Community·15 September 2026·5 min readSpirulina smoothie recipes: five flavour-masking blends, phycocyanin preservation in cold drinks, and blending technique
Cold drinks preserve phycocyanin completely (zero heat degradation). Blending sequence matters: spirulina → liquid → fruit/yogurt prevents clumping. Five recipes: 1) post-workout recovery (banana, honey, milk — completely masked), 2) iron-boosting (mango, orange juice vitamin C — completely masked), 3) tropical (pineapple, coconut milk — complete mask, most foolproof), 4) chocolate creamy (cacao, nut butter — completely masked), 5) berry energiser (mixed berries, flaxseed — completely masked). Dosing: 2–5g per smoothie. Spirulina is undetectable in all five recipes. Serve ice-cold (cold suppresses taste buds, preserves phycocyanin). Consume within 1 hour of blending for maximal phycocyanin bioavailability.
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Community·15 September 2026·6 min readSpirulina growing: inoculum maintenance, viability testing, cryopreservation, and contaminant screening
Healthy inoculum (OD680 ≥0.6) ensures rapid culture colonisation. Maintain purity via microscopy (>95% spirulina helical filaments, <1% algal contaminants). Subculture every 4–6 weeks (10–15% to fresh medium) to prevent senescence and slow-growing contamination accumulation. Viability testing: OD680 (target 0.8–1.2), motility (>80% cells moving), colour (vivid blue-green indicates healthy phycocyanin). Cryopreservation (10% DMSO at −20°C or −80°C) preserves strain genetics indefinitely; superior to continuous subculturing (which causes genetic drift). Before scaling to production, plate inoculum on nutrient agar (48–72 hr, 37°C) to screen bacterial load (<5 colonies acceptable). Inoculation rate: 10–15% by volume for static culture; 5–10% maintenance for continuous raceways.
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Spirulina and athletic performance: BCAA recovery, iron for oxygen transport, eNOS and muscle blood flow, and endurance benefit
Spirulina complete BCAA (20–30% protein) activates mTORc1 post-exercise muscle protein synthesis. Iron (57% heme-equivalent bioavailability) supports oxygen transport and mitochondrial cytochrome c oxidase — iron-depleted athletes improve VO₂ max 5–8% within 4–6 weeks. Phycocyanobilin NOX2 inhibition reduces exercise-induced ROS, preserving eNOS coupling and muscle blood flow. Untrained athletes on 2–5g daily for 4–6 weeks show 3–5% endurance performance improvement and 20–30% DOMS (delayed-onset muscle soreness) reduction. Elite athletes (VO₂ max >70 mL/kg/min) show minimal performance benefit. Post-exercise dosing: 3–5g with carbohydrate within 30 min. Low NK concern in healthy athletes. No NSAID interaction.
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Community·14 September 2026·6 min readSpirulina growing: harvest techniques, drying methods, pH management, and storage
Harvest at OD680 0.8–1.0 (0.4–0.6 g/L dry weight); higher density causes cell lysis, lower increases water loss. Wet harvest via 100–200µm mesh, gentle cloth press or screen drain. Drying: sun-drying <25°C (6–12h), oven 40–50°C (8–12h), or freeze-drying (4–8h at <0.1 mbar). Temperature critical: >50°C destroys phycocyanin. Post-harvest pH control: maintain 9.5–10 to preserve phycocyanin. Cool dark room temperature storage: 6–12 months shelf life; refrigerated: >2 years. Colour fade (blue to dull blue-green) indicates phycocyanin oxidation (normal age-related, not spoilage). Yield: ~1kg dry powder from 4–5kg wet harvest (50L raceway: 400–500kg/year).
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Science·14 September 2026·6 min read·MembersSpirulina and cardiovascular disease: endothelial NOX2, atherosclerotic inflammation, statins, and DAPT
Atherosclerosis driven by endothelial dysfunction and monocyte NOX2-mediated LDL oxidation (foam cell formation). Phycocyanobilin NOX2/NF-κB inhibition reduces macrophage IL-6/TNF-α and atherosclerotic plaque inflammation. Endothelial eNOS uncoupling from oxidative stress — spirulina enhances eNOS and stabilises BH4 cofactor. No pharmacokinetic interaction with statins (CYP3A4 metabolised statins unaffected at physiological doses; time-separate practical). ACE-I/ARBs/beta-blockers: no interaction. DAPT (aspirin + clopidogrel): spirulina mild antiplatelet effect is negligible in DAPT context. Warfarin vitamin K (20–30µg/10g): consistent daily dosing essential; INR check 2 weeks after starting. Low NK concern. Complements cardiac rehabilitation.
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Science·14 September 2026·6 min read·MembersSpirulina and frailty: age-related sarcopenia, IL-6/TNF-α, mTOR signalling, and low NK concern
Frailty (age-related sarcopenia) involves anabolic resistance and chronic IL-6/TNF-α inflammation. Spirulina complete BCAA-rich protein (20–30% dry weight) stimulates mTORc1 muscle protein synthesis — the direct target of anabolic resistance. Phycocyanobilin NOX2 inhibition reduces macrophage IL-6/TNF-α. EWGSOP2 recommends 1.0–1.2g protein/kg/day for older adults; 5g spirulina provides 3.5g (7–10% of 70kg adult target). Leucine threshold dosing: spirulina 0.35–0.4g leucine per 5g; combine with other protein to reach 2–3g leucine per meal for mTORc1 activation. No interaction with ACE-I, ARBs, statins, bisphosphonates. Low NK concern in euthyroid older adults.
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Community·13 September 2026·6 min readLight management for spirulina culture: PAR measurement, photoinhibition, photoperiod, and seasonal adaptation
Spirulina saturates at 200–400 µmol/m²/s PAR. Flashing light effect in mixing cultures allows handling peak irradiance up to 600–1,000 µmol/m²/s. UK summer outdoor noon irradiance 800–1,200 µmol/m²/s: shade netting (30–50%) required for static or low-mixing cultures. UV bleaches phycocyanin at the surface — UV-filtering polycarbonate improves phycocyanin yield. UK outdoor season: May–September. Indoor LED: 5,000–6,500K cool white at 200–300 µmol/m²/s, 16L:8D photoperiod. PAR meter required for accurate management (lux meters undercount red light). Too little light: pale colour, slow growth; too much (static): phycocyanin bleaching to yellow-green.
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Science·13 September 2026·6 min read·MembersSpirulina and psoriatic arthritis: IL-17/TNF axis, enthesis NOX2, biologics NK concern, and JAK inhibitors
PsA involves IL-17A/TNF-α enthesis and skin inflammation. Enthesis macrophage NOX2 is the same pathological target as ankylosing spondylitis. Skin keratinocyte NOX2 overexpression under IL-17A drives psoriatic hyperproliferation — phycocyanobilin NOX2 inhibition is relevant. Methotrexate: no CYP interaction, intermediate NK concern. Anti-IL-17 (secukinumab/ixekizumab): NK cells produce IL-17A (NKp44+); spirulina NK stimulation could counter anti-IL-17 therapy — discuss with rheumatologist. Anti-IL-23, anti-TNF: intermediate NK concern. JAK inhibitors (upadacitinib/tofacitinib): pharmacodynamically counterproductive with NK stimulation. Apremilast: lowest pharmacodynamic concern.
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Science·13 September 2026·6 min read·MembersSpirulina and IgA nephropathy: mesangial NOX2, protein in CKD, RAAS therapy, and SGLT2 inhibitors
IgA nephropathy: poorly galactosylated IgA1 mesangial deposition activates complement and mesangial NOX2/NF-κB — a direct target for spirulina phycocyanobilin. NK concern low (complement-driven, not NK-driven). Protein in CKD: spirulina 5g provides 3.5g protein — small additional load; include in total protein budget at eGFR <30; plant protein has lower net acid load than animal protein (favourable). RAAS inhibitors (ACE-I/ARBs): no interaction; endothelial NO effects may modestly complement efferent arteriole dilation. SGLT2 inhibitors (dapagliflozin): now approved for IgA nephropathy; no pharmacokinetic interaction. Targeted-release budesonide (Nefecon): no CYP interaction.
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Community·12 September 2026·5 min readSpirulina naan and flatbreads: baking temperatures, chlorophyll colour, and five recipes
Baking temperatures (200–250°C) destroy phycocyanin — chlorophyll survives producing vivid green flatbreads. Mix spirulina into liquid component before adding flour for even distribution. Baking soda (alkaline) preserves bright green chlorophyll colour; sourdough acidity shifts toward olive. Dosing: 3–5g per batch of 4–6 flatbreads. Five recipes: garlic herb naan with garlic butter post-bake (spirulina completely undetectable), spinach-spirulina roti, Turkish gözleme with spinach-feta, Ethiopian injera teff, and quick no-yeast pitta. Serve with cold spirulina hummus or yogurt for phycocyanin benefit alongside.
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Science·12 September 2026·6 min read·MembersSpirulina and primary sclerosing cholangitis: biliary NK concern, IBD overlap, UDCA, cholestyramine interaction
PSC is progressive periductal fibrosis driven by gut-liver axis TLR4/NF-κB/NOX2 biliary inflammation. 70–80% have IBD (typically pan-colitis). NK and CD8+ T cell biliary infiltrate: NK stimulation concern intermediate to high. No proven medical treatment — UDCA controversial in PSC. Cholangiocarcinoma risk ~15% lifetime: spirulina has no role in CCA surveillance or prevention. Cholestyramine (pruritus): take spirulina ≥2 hours before or 4–6 hours after — cholestyramine binds spirulina components. Advanced cholestasis: water-miscible fat-soluble vitamins preferred. CoA-verified product essential.
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Science·12 September 2026·6 min read·MembersSpirulina and autoimmune hepatitis: hepatocyte NOX2, prednisolone, azathioprine, and liver enzyme monitoring
AIH involves T cell and plasma cell infiltration of the liver, hepatocyte NOX2/NF-κB amplification, and autoantibodies (anti-SMA, anti-LKM1). NK stimulation concern is intermediate in active AIH; lower in remission. Prednisolone: NK concern at induction doses (40–60mg/day); introduce spirulina in stable remission. Azathioprine: no pharmacokinetic interaction (TPMT metabolism). CRITICAL: use only CoA-verified spirulina (microcystins <1µg/g) — contaminated spirulina is hepatotoxic; check ALT/AST at baseline and 6–8 weeks after starting. Overlap AIH-PBC: apply PBC NK framework (NK cells primary biliary effectors).
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Community·11 September 2026·6 min readScaling up spirulina production: from 20L tanks to 500L raceways, yield calculations, and cost analysis
Scaling from 20L hobbyist indoor tanks to 500L outdoor semi-commercial raceways requires paddlewheel mixing (essential above 50L), CO2 proportional pH control, and a shift from manual filtration to gravity settling or centrifugation. Productivity target: 1–3g/L/day under optimal conditions. A 500L raceway produces 1.5–3kg dry powder/month in UK summer. Cost per gram: £0.20–0.60 at 500L scale vs £5–15 at hobbyist scale. Capital cost: £500–2,000 for 500L setup. Rainwater is ideal at scale (no chloramine, free, low mineral). Water supply treatment, dead zone design, and CO2 cylinder sizing included.
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Science·11 September 2026·6 min read·MembersSpirulina and idiopathic pulmonary fibrosis: NOX4 fibroblast pathway, TGF-β, nintedanib, and pirfenidone
IPF is TGF-β activation of myofibroblast NOX4 — distinct from NOX2 that phycocyanobilin primarily inhibits. NF-κB inhibition may partially reduce TGF-β amplification. NK stimulation concern is low (not immune cell-driven; immunosuppression worsens IPF per PANTHER trial). Nintedanib (CYP3A4/P-gp): no documented significant spirulina interaction; introduce spirulina slowly at 1g/day to minimise additive GI side effects. Pirfenidone (CYP1A2): no significant spirulina interaction; beta-carotene may modestly support photoprotection alongside standard sun protection. GORD (>85% of IPF): powder format in liquid, not tablets. Long-term PPI: add vitamin C; use MMA/holoTC for B12 monitoring.
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Science·11 September 2026·6 min read·MembersSpirulina and dysautonomia: POTS, orthostatic hypotension, NO pathway, salt loading, and fludrocortisone
Dysautonomia (POTS, orthostatic hypotension, vasovagal syncope) involves autonomic vascular tone dysfunction. Iron deficiency is common in POTS — ferritin target >75µg/L for symptom optimisation; spirulina iron + vitamin C contributes to repletion. Spirulina endothelial NO effects are mechanistically aligned with improving vascular tone regulation; in orthostatic hypotension on midodrine, the mild vasodilatory tendency is not expected to be clinically significant at 3–5g/day. MCAS overlap (17–50% of POTS): start at 0.1g/day, increase 0.1g/week with 24–48h observation. Fludrocortisone: monitor potassium (spirulina K may offset kaliuretic effect). Take with salt-loading meals.
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Community·10 September 2026·6 min readHarvesting and drying spirulina at home: filtration, pressing, low-temperature drying, and phycocyanin preservation
Harvest at OD680 0.8–1.2; remove 20–30% culture volume; replace immediately with fresh Zarrouk medium. Filter through 50–100 micron monofilament mesh; press to 70–80% moisture. Fresh paste can be used immediately (highest phycocyanin) or stored 2–3 days at 4°C. Drying: food dehydrator at 35–38°C (best home method, 50–70% phycocyanin preserved); oven only if minimum setting ≤40°C with door ajar; freeze-drying preserves >90% but requires specialist equipment; sun-drying destroys phycocyanin. Target moisture below 7% for storage. Store in airtight dark container; refrigerate beyond 1 month, freeze beyond 3 months.
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Science·10 September 2026·5 min read·MembersSpirulina and stiff person syndrome: anti-GAD65, GABA pathway, spinal NOX2, IVIG, and diazepam
Stiff person syndrome involves anti-GAD65 antibodies reducing GABA synthesis in spinal inhibitory interneurons, causing rigidity and spasms. NK stimulation concern is low (antibody-mediated B cell-driven, not NK cell-driven). Spirulina tryptophan (~0.3g/5g) supports serotonin synthesis, which modulates GABAergic tone. Selenium supports selenoprotein antioxidant enzymes reducing oxidative impairment of GAD65 activity. Spinal microglial NOX2 inhibition is mechanistically relevant. Diazepam and baclofen: no pharmacokinetic interaction. IVIG: discuss supplement timing with neurologist. Avoid spirulina in caffeine-containing formats — stimulants lower spasm threshold.
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Science·10 September 2026·6 min read·MembersSpirulina and sarcoidosis: granuloma NOX2, vitamin D hypercalcaemia risk, corticosteroids, and fatigue
Sarcoidosis is Th1 macrophage-driven granuloma formation with macrophage NF-κB/NOX2 activation — a good mechanistic target for spirulina phycocyanobilin. NK stimulation concern is low (Th1 macrophages, not NK cells, are primary effectors). CRITICAL vitamin D concern: sarcoidosis granuloma macrophages express CYP27B1 (unregulated 1-alpha hydroxylase), causing hypercalcaemia with vitamin D supplementation — spirulina vitamin D content is negligible and safe, but avoid co-supplementing vitamin D without specialist approval. Beta-carotene is safe. HCQ: complementary NF-κB inhibition; no interaction. Fatigue: use transferrin saturation (not ferritin) for iron assessment in active disease.
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Community·9 September 2026·5 min readSpirulina crêpes: thin batter technique, chlorophyll colour, and five recipes from sweet lemon to savoury buckwheat
Crêpe cooking temperatures (180–200°C) destroy phycocyanin — chlorophyll survives, producing uniformly vivid green thin crêpes. Batter technique: whisk spirulina into warm milk before adding flour; rest batter 30 minutes for gluten relaxation and uniform colour. 3–4g spirulina per batch (8 crêpes, serves 2). Five recipes: classic lemon-sugar (spirulina completely undetectable), chocolate-banana dessert, savoury spinach-cream, smoked salmon-cream cheese (cold-assembled), and buckwheat galettes (gluten-free; earthy buckwheat masks spirulina completely). Batter keeps 2 days refrigerated.
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Science·9 September 2026·6 min read·MembersSpirulina and polymyositis: CD8+ T cell muscle infiltration, anti-Jo-1, ILD risk, and protein recovery
Polymyositis involves CD8+ cytotoxic T cell invasion of MHC-I-expressing muscle fibres — distinct from dermatomyositis (no skin involvement, no type I IFN signature, NK cells secondary not primary). Anti-synthetase syndrome (anti-Jo-1): myositis + ILD risk. NK stimulation concern: intermediate (lower than DM, NK cells secondary effectors). Protein adequacy: 1.2–1.6g/kg/day for muscle recovery — spirulina contributes 3.5–7g protein at 5–10g/day. Leucine threshold (~2.5g/meal for mTOR) not met by spirulina alone — use alongside dietary protein. CK monitoring: spirulina antioxidant effects may modestly reduce inflammatory CK but do not confirm disease control.
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Science·9 September 2026·6 min read·MembersSpirulina and antiphospholipid syndrome: warfarin vitamin K interaction, antiplatelet addition, and thrombotic APS
APS (Hughes syndrome) causes thrombosis and pregnancy complications via anti-cardiolipin/beta2-GPI/lupus anticoagulant antibodies activating endothelial NOX2 and platelets. Warfarin vitamin K interaction is the critical concern: spirulina (~20–30µg K per 10g) must be dosed identically every day; any dose change destabilises INR. Introduction protocol: stepwise with INR check at each stage. Never vary dose or skip days. Spirulina is NOT anticoagulant. Mild antiplatelet addition at ≥5g/day. Obstetric APS on LMWH: no vitamin K interaction. Primary APS NK concern is low; secondary APS + SLE: apply SLE framework.
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Community·8 September 2026·6 min readCarbon supplementation for spirulina culture: COâ‚‚, bicarbonate, sesquicarbonate, and carbon deficiency signs
Spirulina fixes bicarbonate (HCO3−) via the carbon-concentrating mechanism. Zarrouk medium provides 16.8g/L NaHCO3 as primary carbon and alkalinity source. Carbon consumption raises pH — pH rise during daylight is a sign of active photosynthesis consuming carbon. CO2 injection simultaneously provides carbon and lowers pH — the most efficient dual-action carbon correction. Signs of carbon deficiency: pH plateau (fails to rise with light), growth stall, pale-green colour (distinct from yellow-green nitrogen deficiency). Never add dry bicarbonate directly — dissolve first to prevent localised stress.
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Science·8 September 2026·6 min read·MembersSpirulina and mixed connective tissue disease: anti-U1-RNP, composite NK concern, PAH, and HCQ
MCTD is defined by anti-U1-RNP antibodies and overlapping features of SLE, systemic sclerosis, and polymyositis/dermatomyositis. NK stimulation concern is composite — assessed against the most active component disease: DM-dominant (highest concern); SLE-dominant (intermediate); SSc-dominant (lower, as SSc paradoxically shows reduced NK activity). Pulmonary arterial hypertension (20–30% of MCTD, leading mortality cause): spirulina NOX2 inhibition mechanistically relevant to pulmonary vascular protection. Raynaud's: spirulina endothelial NO effects may modestly complement calcium channel blocker therapy. HCQ: no pharmacokinetic interaction, no NK concern.
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Science·8 September 2026·6 min read·MembersSpirulina and Behçet's disease: neutrophil NOX2, HLA-B51, ocular involvement, colchicine, and anti-TNF
Behçet's disease is driven by neutrophil NOX2 hyperactivation and NF-κB endothelial activation — the most direct mechanistic match for spirulina phycocyanobilin NOX2 inhibition of any autoimmune condition. NK stimulation concern is lower than NK-driven conditions (neutrophils, not NK cells, are primary effectors). Colchicine: no pharmacokinetic interaction; spirulina NOX2 inhibition complements colchicine anti-neutrophil mechanism. Apremilast: no interaction; no NK concern. Anti-TNF agents: no pharmacokinetic interaction; NK concern intermediate — discuss with specialist. Ocular Behçet's uveitis is an ophthalmological emergency requiring immediate specialist treatment.
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Community·7 September 2026·5 min readSpirulina pancakes: heat, chlorophyll stability, colour guide, and five recipes from classic to protein
Pancake cooking temperatures (160–180°C) destroy phycocyanin — chlorophyll survives and produces vivid green colour. Protein, iron, beta-carotene, and calcium survive cooking. Batter technique: whisk spirulina into liquid before adding flour to avoid streaks. Flavour is masked by vanilla, banana, maple syrup, and buttermilk. Five recipes: classic green (masked flavour), banana-oat protein (25–30g protein), savoury spring onion with sesame-soy, American fluffy protein stacks with whipped egg white, and Japanese soufflé. For phycocyanin benefit, top with cold spirulina yogurt or serve alongside cold spirulina format.
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Science·7 September 2026·6 min read·MembersSpirulina and dermatomyositis: muscle NOX2, ILD risk, NK concern, IVIG, JAK inhibitors, and skin photosensitivity
Dermatomyositis is an inflammatory myopathy with type I interferon signature and NK cell/CD8+ T cell muscle infiltration. NK cells are primary muscle effectors — NK stimulation concern is significant in active DM. Antibody subtypes: MDA5 (highest ILD risk), NXP2 (calcinosis, malignancy), TIF1γ (highest malignancy association), Mi-2 (best prognosis). Treatment: prednisolone, IVIG, JAK inhibitors (baricitinib — pharmacodynamically counterproductive with spirulina NK stimulation), rituximab. Skin photosensitivity: spirulina beta-carotene not a substitute for UV avoidance and high-SPF sunscreen. Protein adequacy important for muscle recovery.
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Science·7 September 2026·6 min read·MembersSpirulina and polymyalgia rheumatica: IL-6, prednisolone interactions, GCA overlap, and anaemia management
PMR is an IL-6-driven inflammatory condition of shoulder and hip girdles in adults over 50. Prednisolone 15–25mg/day is first-line; tocilizumab approved as steroid-sparing therapy. NK stimulation concern is intermediate at PMR prednisolone doses (lower than GCA but above physiological). ACD in active PMR: ferritin is an acute-phase reactant — use transferrin saturation for iron assessment. Steroid-induced glucose intolerance: spirulina adiponectin effects may be mildly attenuating. GCA overlap: 15–20% of PMR develops GCA — any new visual/temple symptoms require urgent assessment.
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Community·6 September 2026·6 min readNitrogen management in spirulina culture: NaNO3 concentration, urea, phycocyanin maximisation, and starvation effects
Nitrogen is the primary determinant of spirulina protein (60–70% DW) and phycocyanin (15–25% DW) content. Zarrouk medium uses 2.5g/L NaNO3. Nitrogen starvation is visible as colour shift from blue-green to yellow-green as phycocyanin is degraded first. Urea as nitrogen source: effective but ammonia toxicity above 0.5g/L at alkaline pH — add in small increments only. pH–nitrogen interaction: above pH 10.5, nitrogen uptake efficiency drops. Semi-continuous feeding schedule: replenish NaNO3 immediately after each harvest. Never harvest yellow-green nitrogen-starved culture.
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Science·6 September 2026·6 min read·MembersSpirulina and giant cell arteritis: IL-6 pathway, high-dose prednisolone, tocilizumab, and visual loss risk
GCA is granulomatous large-vessel vasculitis driven by CD4+ Th1/Th17 cells, macrophages, and IL-6. NOX2 inhibition is mechanistically relevant but NK stimulation concern is high at immunosuppressive prednisolone doses (40–60mg/day) and on tocilizumab. Visual loss from AION is an ophthalmological emergency requiring immediate IV methylprednisolone — spirulina has no role. Aspirin overlap: mild additive antiplatelet at ≥5g/day spirulina. Defer spirulina on high-dose steroids or tocilizumab until discussed with rheumatologist; consider introducing during taper phase when prednisolone ≤7.5mg/day.
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Science·6 September 2026·6 min read·MembersSpirulina and type 1 diabetes: beta-cell protection, insulin sensitivity, hypoglycaemia risk, and pump compatibility
T1D is autoimmune beta-cell destruction by CD8+ T cells and NK cells. Spirulina NOX2 inhibition may reduce bystander beta-cell damage in early/LADA stages with residual C-peptide — discuss NK concern with endocrinologist in recently diagnosed T1D. CRITICAL difference from T2D: insulin-sensitising effects (adiponectin/AMPK) increase hypoglycaemia risk in insulin-dependent T1D — CGM or increased fingerstick monitoring essential for 2–4 weeks after starting. Pramlintide: no pharmacokinetic interaction. Insulin pump users: monitor for changed basal requirements. HbA1c and time-in-range are the appropriate monitoring metrics.
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Community·5 September 2026·6 min readpH calibration and monitoring for spirulina culture: buffer solutions, daily targets, and COâ‚‚ adjustment
Spirulina thrives at pH 9.0–10.5. Two-point calibration with pH 7.00 and pH 10.01 buffer solutions is essential — single-point pH 7 calibration introduces 0.2–0.5 unit error in the alkaline range. Daily morning pH measurement before illumination peak; target pH 9.0–10.2. CO2 injection to lower elevated pH; sodium bicarbonate/sesquicarbonate to raise low pH. Never use organic acids. Alkaline shock at pH 11.5 for 2 hours treats rotifer contamination. Conductivity monitoring (target 3.5–4.5 mS/cm for fresh Zarrouk) complements pH for culture health assessment.
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Science·5 September 2026·5 min read·MembersSpirulina and reactive hypoglycaemia: insulin sensitivity, GLP-1, protein buffering, and meal timing
Reactive hypoglycaemia involves exaggerated insulin response causing blood glucose below 3.9 mmol/L within 2–4 hours of meals. Spirulina protein (3.5g/5g) stimulates CCK from duodenal I cells, slowing gastric emptying and reducing glucose spike amplitude. Adiponectin increases from spirulina activate AMPK, improving insulin sensitivity and dampening the compensatory insulin overshoot. Chromium is a cofactor for chromodulin amplifying insulin receptor signalling. CRITICAL: take with carbohydrate meals not between meals. Acarbose, metformin, GLP-1 agonists: no pharmacokinetic interactions. Never substitute spirulina for fast-acting glucose rescue.
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Science·5 September 2026·6 min read·MembersSpirulina and adrenal insufficiency: Addison's disease, hydrocortisone interactions, and electrolytes
Primary adrenal insufficiency (Addison's disease): autoimmune adrenal cortex destruction causing cortisol and aldosterone deficiency. Aldosterone deficiency causes potassium retention — monitor serum potassium 2–4 weeks after starting spirulina (400mg K per 10g). Hydrocortisone physiological replacement (15–25mg/day) does not suppress NK cells — NK stimulation concern is low on physiological doses. No CYP interaction with hydrocortisone or fludrocortisone. APS-II comorbidities (Hashimoto's, type 1 diabetes, vitiligo): assess NK concern in context of all comorbidities. Secondary AI: aldosterone intact, electrolyte management simpler.
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Community·4 September 2026·5 min readSpirulina Bircher muesli: overnight cold oats, full phycocyanin, and five iron-optimised recipes
Bircher muesli is cold-prepared — spirulina whisked into soaking liquid distributes evenly through oats overnight. Full phycocyanin. Phytic acid in oats reduces iron absorption by 50–80% — counter with vitamin C in the bowl (kiwi, citrus, strawberries). Never microwave. Five recipes: classic apple-yogurt (spirulina completely masked), iron-optimised with orange juice throughout (350mg vitamin C total), kefir synbiotic (Lactobacillus + chia + spirulina polysaccharides), protein training (30–35g protein with pea protein), and anti-inflammatory turmeric-ginger-coconut. Keeps 3 days at 4°C.
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Science·4 September 2026·6 min read·MembersSpirulina and primary biliary cholangitis: bile duct NOX2, UDCA, NK concern, and fatigue
PBC involves AMA antibodies, NK cell and T cell biliary infiltration destroying cholangiocytes, and cholangiocyte NOX2-driven inflammatory amplification. NK stimulation concern is significant — NK cells are primary biliary effectors; discuss with hepatologist before starting. Fatigue (80% of PBC patients, unaddressed by UDCA) is partly driven by elevated IL-6, iron deficiency, and protein depletion — all addressable by spirulina. UDCA: no pharmacokinetic interaction. OCA: no interaction; GLA pathway may mildly help OCA-induced pruritus. Advanced cholestasis: water-miscible fat-soluble vitamins preferred over spirulina beta-carotene/K.
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Science·4 September 2026·5 min read·MembersSpirulina and functional dyspepsia: gastric NOX2, H. pylori context, and PPI interactions
Functional dyspepsia involves duodenal eosinophilia, mast cell activation, and gastric mucosal NOX2-driven NF-κB/IL-6 inflammation. GLA/DGLA pathway reduces leukotriene-mediated duodenal sensitisation. CRITICAL: take with food (not empty stomach) in FD — impaired gastric motility worsens early satiation on fasting spirulina. H. pylori eradication: no pharmacokinetic interaction with clarithromycin or amoxicillin; restart spirulina after the 7–14 day eradication course. Long-term PPI: modest iron absorption reduction; add vitamin C; use MMA/holoTC for B12 monitoring.
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Community·3 September 2026·6 min readSpirulina strain selection: Arthrospira platensis vs maxima, phycocyanin content, and sourcing
A. platensis: tight helix, higher phycocyanin (15–25% dry weight), wider pH tolerance (9–11), more contamination-resistant — dominant commercial species. A. maxima: loose helix, slightly higher protein, narrower pH range, less contamination-resistant. Phycocyanin varies fivefold within platensis strains; nitrogen-sufficient Zarrouk and 28–30°C culture temperature maximise phycocyanin. Strain sourcing: certified collections (UTEX, CCAP) most reliable; community cultures require 2-week pre-harvest monitoring; wild-collected cultures are unsafe for food production. Genetic drift requires stock culture refresh every 6–12 months.
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Science·3 September 2026·6 min read·MembersSpirulina and hypermobility syndrome: hEDS, POTS, MCAS overlap, and connective tissue nutrition
hEDS involves extracellular matrix dysfunction, neurogenic inflammation, and ~50–70% MCAS overlap. Spirulina collagen-relevant micronutrients: iron (prolyl hydroxylase cofactor), zinc (MMP cofactor, cross-linking enzymes), vitamin C (modest). MCAS overlap requires 0.1g/day start, 0.1g/week escalation, 24–48h monitoring. POTS overlap: spirulina shots contribute to hydration targets; no interaction with fludrocortisone, propranolol, or ivabradine. Iron target >70µg/L; deficiency extremely common from menorrhagia, dysmotility, and low-calorie diets in hEDS.
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Science·3 September 2026·6 min read·MembersSpirulina and lipoedema: adipose NOX2, lymphatic dysfunction, and anti-inflammatory rationale
Lipoedema involves M1 macrophage NOX2 activation in adipose tissue generating NF-κB/TNF-α/IL-6, leukotriene-mediated vascular permeability (lymphatic loading), and haemosiderin-driven Fenton chemistry from easy bruising. Phycocyanobilin inhibits adipose macrophage NOX2; GLA/DGLA pathway reduces leukotriene vascular permeability; adiponectin increase suppresses M1 activation. No phytoestrogenic activity (key safety point given hormonal triggers). No NK or immunosuppression concerns. GLA benefit is enhanced when dietary arachidonic acid is reduced.
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Community·2 September 2026·5 min readSpirulina protein shakes: five high-protein cold recipes with full phycocyanin
Protein shakes are always cold — full phycocyanin preserved. Spirulina adds 3.5g complete protein + ~350mg leucine per 5g. Five recipes: post-workout recovery (25–30g protein, chocolate whey + frozen banana masks spirulina completely), morning anti-inflammatory (mango-turmeric-ginger + pea protein), chocolate mass shake (550–600kcal, 33–37g protein), iron-optimised women's shake (orange juice + strawberries providing 300+mg vitamin C, no dairy), and kefir synbiotic shake (live bacteria + spirulina prebiotic + blueberry anthocyanins).
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Science·2 September 2026·6 min read·MembersSpirulina and alopecia areata: immune privilege collapse, NK cells, and JAK inhibitor interaction
Alopecia areata involves NKG2D ligand upregulation on follicular epithelium attracting NKG2D+ NK cells and CD8+ T cells that destroy the follicle via IFN-γ. NK cell stimulation from spirulina is the most mechanistically specific NK concern across all autoimmune conditions — NK cells are primary effectors in AA. Active AA or totalis/universalis: avoid without dermatologist approval. JAK inhibitors (baricitinib, ritlecitinib): no pharmacokinetic interaction but NK stimulation is pharmacodynamically counterproductive. Iron deficiency: ferritin target >70µg/L; correct before assessing response.
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Science·2 September 2026·6 min read·MembersSpirulina and Hashimoto's thyroiditis: thyrocyte DUOX2, selenium, iodine, and levothyroxine timing
Hashimoto's involves CD4+/CD8+ T cell and NK cell follicular infiltration, anti-TPO/thyroglobulin antibodies, and DUOX2 H₂O₂ overproduction in thyrocytes driving oxidative follicular destruction. Phycocyanobilin may reduce excess DUOX2 oxidative burden. Selenium (10–30µg/5g) supports thyrocyte GPx antioxidant defence. Iodine content is negligible (0.8–2.5µg/5g — not a Wolff-Chaikoff concern). CRITICAL timing: levothyroxine 30–60 minutes before breakfast with water only; spirulina with breakfast or later (4-hour minimum gap). TSH check 6–8 weeks after starting.
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Community·1 September 2026·6 min readSpirulina raw cakes: no-bake cheesecakes, tarts, and slices with full phycocyanin
Raw cakes use soaked cashew cream, coconut oil, and date bases without baking — full phycocyanin preserved throughout. Cashew-coconut fat emulsion sets to cheesecake texture when refrigerated. Chocolate ganache layers: melt to 45–50°C, cool to 35°C before pouring over spirulina filling. Five formats: spirulina raw cheesecake (lime-brightened teal), matcha-spirulina tart, chocolate-spirulina slice (distinct layers with thermometer-checked ganache), lemon-spirulina bars (most palatable for sceptics — acid colour reaction maximises visual appeal), and layered mango-spirulina torte (orange over green cross-section).
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Science·1 September 2026·6 min read·MembersSpirulina and pernicious anaemia: intrinsic factor deficiency, B12 pseudocobalamin trap, and iron
Pernicious anaemia involves autoimmune parietal cell destruction eliminating intrinsic factor and causing B12 malabsorption. Achlorhydria also impairs iron absorption, making concurrent iron deficiency common (dimorphic blood picture). CRITICAL: spirulina pseudocobalamin produces falsely normal serum B12 assays in PA patients — use MMA and holotranscobalamin II exclusively for B12 monitoring. B12 replacement must be IM hydroxycobalamin or high-dose oral cyanocobalamin. Spirulina non-haem iron may have modest absorption advantage in achlorhydric patients via proteolytic rather than acid-dependent matrix release.
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Science·1 September 2026·6 min read·MembersSpirulina and spinal cord injury: secondary injury, neuroprotection, and autonomic nutrition
SCI secondary injury cascade: microglial NOX2 activation (DAMPs → M1 polarisation → bystander neuronal death), ischaemia-reperfusion peroxynitrite (endothelial NOX2 + NO), BBB tight junction disruption. Phycocyanobilin inhibits microglial and endothelial NOX2, potentially reducing secondary neuronal loss in the penumbra. Iron: free haem from parenchymal haemorrhage drives Fenton chemistry — defer supplementation until 2+ weeks post-injury unless systemic anaemia requires correction. Pressure ulcer healing: iron and protein both required; check transferrin saturation.
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Community·31 August 2026·6 min readSpirulina indoor LED growing setup: spectrum, intensity, photoperiod, and energy efficiency
Optimal indoor LED setup: 5,000–6,500K cool white or 3:1 red:blue spectrum; 3,000–5,000 lux at culture surface; mounted 15–25cm above culture. Spirulina photosaturation at ~200–400 µmol/m²/s PAR — mixing via air pump creates efficient flicker effect cycling cells through the light zone. Photoperiod: 18h light/6h dark. 20–30W LED panel sufficient for 20L home culture (~£39/year electricity at UK rates). Critical mistake: warm white LEDs (<3,000K) limit phycocyanin synthesis; always verify intensity with a lux meter.
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Science·31 August 2026·6 min read·MembersSpirulina and traumatic brain injury: microglial NOX2, secondary injury cascade, and recovery nutrition
TBI secondary injury involves microglial NOX2 activation, excitotoxic calcium-driven mitochondrial ROS, and BBB tight junction disruption via endothelial NOX2. Phycocyanobilin inhibits microglial and endothelial NOX2, reducing bystander neuronal damage and BBB permeability. Iron timing: free haem from intracranial haemorrhage drives Fenton chemistry — defer iron supplementation until 2+ weeks post-TBI unless Hb <10g/dL. Tryptophan and tyrosine support serotonin and catecholamine recovery. No interaction with levetiracetam or lamotrigine.
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Science·31 August 2026·6 min read·MembersSpirulina and hereditary angioedema: bradykinin mechanism, C1-INH deficiency, and safety assessment
HAE involves C1-INH deficiency causing uncontrolled bradykinin generation from the kallikrein-kinin system — not histamine. Spirulina's mast cell and histamine pathway effects are mechanistically irrelevant to HAE attacks. No documented case of spirulina triggering HAE. HAE type III (oestrogen-sensitive): spirulina has no oestrogenic activity — key safety point. No pharmacokinetic interaction with icatibant, lanadelumab, or C1-INH concentrate. Start at 1–2g/day with attack frequency monitoring for 4–6 weeks.
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Community·30 August 2026·5 min readSpirulina with fermented foods: kefir, kimchi, yogurt, and miso — probiotic synergy and temperature rules
Spirulina polysaccharides (prebiotic) combine synergistically with fermented probiotic bacteria in a synbiotic effect — kefir and yogurt Lactobacillus and Bifidobacterium thrive on spirulina polysaccharide substrates. All formats served cold: full phycocyanin preserved. Five formats: kefir shot (lemon neutralises mineral taste), yogurt bowl, miso dressing (most effective savoury flavour mask), kimchi bowl with gochujang-spirulina sauce, spirulina labneh dip. Dairy calcium reduces iron absorption — use spirulina-citrus shots for iron optimisation.
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Science·30 August 2026·6 min read·MembersSpirulina and DVT/PE: hypercoagulability, anticoagulant interactions, and iron in post-thrombotic syndrome
Spirulina has mild antiplatelet activity (inhibits platelet aggregation in vitro) — the primary concern alongside anticoagulant therapy. Warfarin: vitamin K ~20–30µg/10g requires consistent daily spirulina dosing; INR check 2 weeks after starting; never vary spirulina dose on warfarin. DOACs: no vitamin K interaction; mild antiplatelet addition at high doses. Spirulina is NOT an anticoagulant and must never substitute prescribed therapy. Post-thrombotic syndrome: phycocyanobilin venous wall NOX2 inhibition is mechanistically sound; use transferrin saturation for iron assessment.
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Science·30 August 2026·6 min read·MembersSpirulina and pre-eclampsia: placental NOX2, NO deficiency, and pregnancy supplement safety
Pre-eclampsia involves defective trophoblast invasion, placental ischaemia-reperfusion, syncytiotrophoblast NOX2-driven sFlt-1 production, and systemic endothelial NO deficiency. Phycocyanobilin's NOX2 inhibition is mechanistically relevant to the sFlt-1/VEGF pathway — though no clinical trial data in pre-eclampsia exists. Aspirin prophylaxis (75–150mg from 12 weeks) has level 1a evidence; spirulina is a nutritional adjunct only. Critical: spirulina is not a B12 source; not a folic acid substitute; heavy metal CoA mandatory in pregnancy.
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Science·29 August 2026·6 min read·MembersSpirulina and thalassaemia: iron overload risk, oxidative haemolysis, and trait vs disease distinction
The thalassaemia spectrum spans from safe to contraindicated for spirulina iron. Thalassaemia major (transfusion-dependent): iron overload is the central challenge — spirulina iron is absolutely contraindicated without haematologist approval. Thalassaemia intermedia: check ferritin + transferrin saturation before starting; monitor 3-monthly. Beta-thalassaemia trait: iron stores normal or low — spirulina is safe and nutritionally beneficial. Critical diagnostic alert: beta-thalassaemia trait is frequently misdiagnosed as iron deficiency anaemia on standard FBC; request haemoglobin electrophoresis if iron supplements have not corrected microcytic anaemia.
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Science·29 August 2026·6 min read·MembersSpirulina and peripheral artery disease: vascular NOX2, claudication, and antiplatelet interactions
PAD involves endothelial NOX2-driven NO quenching, NF-κB/VCAM-1 monocyte recruitment, and LDL oxidation in atheromatous plaques. Phycocyanobilin inhibits endothelial NOX2 and preserves NO bioavailability at residual endothelium. LDL-lowering, HDL-raising, and triglyceride-reducing effects documented in clinical trials. Antiplatelet concern: mild additive antiplatelet effect — relevant at high doses or with dual antiplatelet/anticoagulation. Statins: complementary mechanisms, no interaction. Warfarin: consistent daily dose; INR check 2 weeks after starting.
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Science·29 August 2026·6 min read·MembersSpirulina and autoimmune disease: the NK stimulation concern, NOX2 benefit, and condition-specific guidance
Spirulina has two opposing mechanisms in autoimmune disease: NK stimulation/IL-12 induction (concerns immunologists) and phycocyanobilin NOX2/NF-κB inhibition (interests rheumatologists). Risk scales with immunosuppression depth: organ transplant and vasculitis induction = highest concern; RA on biologics = intermediate; RA on methotrexate/HCQ only or psoriasis without biologics = lower concern. Framework: always inform specialist, assess immunosuppression depth, assess disease activity, start low if approved.
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Science·28 August 2026·6 min read·MembersSpirulina and Sjögren's syndrome: interferon signature, glandular NOX2, and NK concern
Primary Sjögren's is driven by type I interferon signature (pDC IFN-α/β), glandular lymphocytic infiltration, and anti-Ro/SSA and anti-La/SSB autoantibodies. Glandular NOX2 drives NF-κB/BAFF amplification of the B cell autoantibody response. Phycocyanobilin's NOX2 inhibition may reduce this loop. CRITICAL: NK cell stimulation requires rheumatologist discussion before spirulina in any Sjögren's patient. On HCQ only: lower risk. On rituximab: discuss NK concern. Powder format preferred — xerostomia makes tablets difficult.
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Spirulina and fertility: oxidative stress in gametes, male and female mechanisms, and IVF context
Oxidative stress drives male factor infertility (sperm DNA fragmentation via NOX5 excess), female infertility (poor oocyte quality from granulosa cell NOX2), and PCOS (follicular arrest from insulin resistance). Spirulina addresses each: phycocyanobilin radical scavenging reduces sperm lipid peroxidation and MDA; granulosa NOX2 inhibition improves follicular fluid TAC; adiponectin/insulin sensitisation normalises PCOS LH pulsatility. IVF: no interaction with gonadotropins, GnRH agonists/antagonists, or letrozole. Begin 60+ days before egg collection.
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Science·28 August 2026·6 min read·MembersThe spirulina B12 myth: why pseudocobalamin is not bioavailable and what to use instead
Spirulina's B12 analogues (pseudocobalamin) are not bioavailable in humans and produce falsely normal serum B12 immunoassay results. The standard NHS/serum B12 test cannot distinguish pseudocobalamin from true cobalamin. True B12 status requires methylmalonic acid (MMA) or holotranscobalamin II (active B12) testing. Highest risk groups: vegan children (neurological damage risk), pregnant vegans, coeliac patients. Use cyanocobalamin or methylcobalamin supplements — spirulina cannot substitute as a B12 source for any population.
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Community·27 August 2026·7 min readSpirulina growing: complete beginners guide — first culture, basic equipment, and first harvest
Complete beginner's guide to growing spirulina at home. Minimum equipment: HDPE tank or aquarium, air pump, thermometer, pH meter, grow light or south-facing window. Start with 1L starter culture in 10L Zarrouk medium at 28–30°C. First harvest at week 3–4 when culture is visibly dark green opaque. Three most common beginner failures: chloramine in tap water (does NOT dissipate on standing — filter or treat), temperature below 20°C (heater required), and harvesting too early. Semi-continuous harvest 20–30% every 2–3 days.
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Science·27 August 2026·6 min read·MembersSpirulina and ankylosing spondylitis: IL-17, TNF-α, enthesitis, and biologic interactions
AS is driven by HLA-B27, IL-23/IL-17A axis, TNF-α at entheses. Neutrophil NOX2 respiratory burst at enthesis insertion sites drives NF-κB/IL-6/RANKL inflammatory amplification. Phycocyanobilin inhibits NOX2 and NF-κB at the same sites. No pharmacokinetic interaction with TNF inhibitors (adalimumab, etanercept) or IL-17 inhibitors (secukinumab, ixekizumab) — both are monoclonal antibodies. NK stimulation concern: discuss with rheumatologist. Iron: ferritin unreliable in active AS — use transferrin saturation (<20%).
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Community·27 August 2026·6 min readSpirulina dosing guide: how much to take, when, and for which goals
Standard adult dose: 3–5g/day, supported by the majority of clinical trials. Goal-specific ranges: iron status 3–5g, immune support 3–5g, lipids 3–5g, blood sugar/PCOS 3–8g, athletic endurance 5–8g. Escalation protocol for sensitive individuals: start 0.5–1g, increase 0.5–1g every 3–5 days. Timing: morning (tyrosine/phenylalanine activating — avoid bedtime). Population adjustments: children, pregnancy, CKD stage 3, immunosuppressed. Contraindications: PKU, MAOIs, active immunosuppression.
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Community·26 August 2026·6 min readOutdoor raceway ponds for spirulina: design, paddlewheel mixing, CO2 management, and UK climate
Outdoor raceway ponds are the commercial standard for spirulina production. Oval loop with central baffle; optimal depth 15–20cm. Paddlewheel velocity 15–30 cm/s prevents settling and provides CO2 degassing — below 10 cm/s causes culture death via settling; above 35 cm/s causes cell shear damage. UK climate limits outdoor production to May–September; polycarbonate cover extends season by 5–10°C. Annual yield UK outdoor: 2–5 tonnes/hectare. Bird netting mandatory for food production HACCP compliance. Semi-continuous harvest 20–30% daily maintaining OD650 0.8–1.2.
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Science·26 August 2026·6 min read·MembersSpirulina and ovarian health: PCOS, premature ovarian insufficiency, and follicular oxidative stress
Ovarian follicular development involves high oxidative stress in granulosa cells. Follicular fluid total antioxidant capacity correlates with oocyte quality and IVF success. PCOS involves insulin resistance and androgen excess — spirulina's adiponectin and insulin-sensitising effects reduce ovarian androgen stimulation (same rationale as metformin). Autoimmune POI: NK stimulation requires rheumatological assessment. Non-autoimmune POI: granulosa NOX2 inhibition may reduce follicular atresia. IVF antioxidant adjunct: no interaction with gonadotropins, letrozole, or GnRH agonists/antagonists.
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Science·26 August 2026·6 min read·MembersSpirulina and childhood nutrition: iron deficiency, protein, B12 warning, and age-appropriate dosing
Iron deficiency is the most common nutritional deficiency in children globally. CRITICAL B12 warning: spirulina pseudocobalamin is not bioavailable and produces falsely normal serum B12 assays — dangerous for vegan children given spirulina as a B12 source. Heavy metal CoA is non-negotiable: Pb <0.1mg/kg, Hg <0.1mg/kg, Cd <0.1mg/kg, As <0.5mg/kg (stricter than adult limits). Age-appropriate dosing: toddlers 0.5–1g, preschool 1–2g, school age 2–3g, adolescents 3–5g. Palatability strategies: banana-mango smoothies, yogurt, no-bake truffles.
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Community·25 August 2026·5 min readSpirulina no-bake truffles: full phycocyanin in confectionery format, five recipes
No-bake truffles preserve full phycocyanin — never heated above 40°C. Chocolate coating: melt to 45–50°C, cool to 35–38°C before dipping (thermometer required). Dose control: 0.5g spirulina per truffle at standard batch size. Five recipes: dark chocolate date truffles (most palatable), coconut lime (no-coating), matcha energy, pistachio cardamom, and post-workout protein truffles (7–8g protein each). Store frozen for 3 months; phycocyanin stable at −18°C.
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Community·25 August 2026·6 min readSpirulina growing: contamination control — predators, competitor algae, and bacterial infections
Rotifers (Brachionus, Monostyla) are the primary spirulina predator — alkaliphilic, can crash a culture in 2–4 weeks. Treatment: raise pH to 11.5 briefly (kills rotifers; spirulina survives alkaline shock) or filter through 25–50µm mesh. Competitor green algae: pH >10 selective pressure. Bacterial contamination: sulfur odour indicates sulfate-reducing bacteria — clean with 10% bleach + sodium thiosulphate neutralisation. Monthly microscopy mandatory. Maintain sealed 1L stock culture for crash recovery.
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Science·25 August 2026·6 min read·MembersSpirulina and coeliac disease: gluten-free status, villous atrophy, iron deficiency, and B12
Coeliac disease causes villous atrophy with iron, folate, B12, and zinc malabsorption. Spirulina is biologically gluten-free but manufacturing cross-contamination requires GF certification (<20ppm gluten) per batch. CRITICAL B12 warning: spirulina pseudocobalamin creates falsely normal serum B12 assay results — use methylmalonic acid and holotranscobalamin II assays for true B12 status. Iron absorption from spirulina is improved progressively as GFD allows mucosal healing over 12–24 months.
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Community·24 August 2026·5 min readSpirulina chia pudding: overnight cold preparation, full phycocyanin, and five recipes
Chia pudding is entirely cold-prepared — spirulina added to cold liquid before chia gels; full phycocyanin preserved for 3+ days at 4°C. Dispersion method: whisk spirulina into liquid first, then add chia so it gels around evenly distributed spirulina particles. Five recipes: classic green, lemon iron-optimised (vitamin C throughout the pudding), chocolate (cacao masks spirulina completely), tropical turmeric anti-inflammatory, and matcha double-green. Chia mucilage + spirulina polysaccharides provide complementary prebiotic substrates.
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Science·24 August 2026·6 min read·MembersSpirulina and polycystic kidney disease: mTOR pathway, cyst oxidative stress, and dietary context
ADPKD involves PKD1/2 mutations causing mTOR-driven cyst proliferation and elevated NADPH oxidase ROS in cyst epithelial cells. Phycocyanobilin's NOX2 inhibition reduces the NF-κB/IL-8/macrophage inflammatory amplification. High hydration strategy (2–3L/day) integrates with spirulina shots. Potassium/phosphorus require CKD-stage assessment. Tolvaptan: CYP3A4 substrate with no documented spirulina interaction. ACE inhibitor/ARB + spirulina potassium monitoring required.
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Science·24 August 2026·6 min read·MembersSpirulina and male fertility: sperm oxidative stress, NOX5, phycocyanin, and zinc
30–80% of infertile men have elevated seminal plasma ROS. Spermatozoa are uniquely vulnerable to lipid peroxidation due to 60–70% PUFA plasma membrane content. NOX5 in spermatozoa generates physiological ROS for capacitation/acrosome reaction but excess drives DNA fragmentation (DFI >15% reduces fertilisation). Phycocyanobilin's tetrapyrrole radical scavenging parallels endogenous bilirubin. Zinc in spirulina supports testosterone synthesis and epididymal sperm maturation. No contraindications in IVF/ICSI context.
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Community·23 August 2026·5 min readSpirulina acaà bowls: combining antioxidant profiles, cold format, and five recipes
Frozen acaà and spirulina are fully cold-compatible — complete phycocyanin preservation. Acaà anthocyanins (free radical scavenging) complement phycocyanobilin (NOX2 inhibition) via different antioxidant mechanisms. Five recipes: classic purple-green, triple antioxidant with cacao and pomegranate, tropical with mango-kiwi vitamin C, iron-focused berry bowl, and matcha-acaà (note: matcha tannins mildly inhibit iron absorption). Acaà flavour effectively masks spirulina taste.
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Science·23 August 2026·6 min read·MembersSpirulina and bladder health: interstitial cystitis, UTI prevention, and urothelial NOX2
IC/BPS involves urothelial NOX2 activation, bladder mast cell infiltration (LTC4/LTD4 — addressed by spirulina GLA/DGLA 5-LOX competition), and neurogenic inflammation with central sensitisation overlap. Recurrent UTI prevention via gut microbiome Lactobacillus stimulation — complementary to cranberry PAC anti-adhesin mechanism. Start at 1–2g in IC/BPS; monitor for urinary symptom changes. BCG intravesical therapy context: NK stimulation may be directionally complementary.
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Community·23 August 2026·6 min readSpirulina growing nutrients guide: nitrogen, phosphorus, potassium, iron, and micronutrients
Zarrouk medium requires precise nutrient balance: KNO3 (nitrogen — deficiency causes chlorosis/yellow culture), NaHCO3 (carbon — depletion causes pH>10.8 and growth stop), FeSO4+EDTA (iron — deficiency reduces phycocyanin; at pH 9–10 iron precipitates without EDTA chelation at 8:1 EDTA:Fe ratio), K2HPO4 (phosphorus/potassium), MgSO4 (chlorophyll cofactor), and trace elements (Mn for PSII, Mo for nitrate reductase, Cu for plastocyanin). Monitor conductivity target 6–8 mS/cm.
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Community·22 August 2026·5 min readSpirulina grain salads: cold dressing on cooled grains, five complete meal recipes
Grain salads use cooled grains — spirulina goes into the cold dressing for full phycocyanin. Five recipes: quinoa tabbouleh with lemon-spirulina dressing, farro with roasted vegetables and tahini, wild rice and edamame iron-optimised salad, bulgur with pomegranate molasses (best flavour masking), and freekeh with roasted tomatoes and goat's cheese. Parsley (6mg iron/100g) + lemon + spirulina creates one of the highest non-haem iron combinations per serving.
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Science·22 August 2026·6 min read·MembersSpirulina and CKD stage 3: potassium, phosphorus, protein load, and renal NOX2
CKD stage 3 requires dietary potassium (400mg/10g spirulina = 13–21% of restricted limit) and phosphorus (120mg/10g = 11–17% of limit) accounting by renal dietitian. CRITICAL: ACE inhibitors/ARBs + spirulina potassium = additive hyperkalaemia risk — monitor serum potassium at 2–4 weeks. Protein load (7g/10g) is modest at 5g/day. Renal NOX2 inhibition by phycocyanobilin is mechanistically relevant to slowing glomerulosclerosis.
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Science·22 August 2026·6 min read·MembersSpirulina and interstitial lung disease: TGF-β fibrosis, alveolar NOX2, and immunosuppressant context
ILD involves alveolar macrophage NOX2 driving oxidative injury that triggers TGF-β1 fibroblast activation. Phycocyanobilin addresses the upstream oxidative component; NOX4-driven myofibroblast differentiation is less directly inhibited. Pirfenidone and nintedanib cause GI side effects — spirulina polysaccharides may compound these; start at 1g. CTD-ILD on immunosuppression requires specialist discussion. IPF on antifibrotics only: immunosuppression concern does not apply.
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Community·21 August 2026·6 min readSpirulina buddha bowls: cold dressing technique, iron-rich combinations, and five recipes
Buddha bowls are structurally ideal for spirulina: warm grains cool naturally, spirulina goes into the cold dressing poured over. Two dressing bases: tahini (fat disperses spirulina without clumping) and citrus-oil emulsion (mustard lecithin stabilises). Five complete meal recipes: Mediterranean iron-optimised, Asian anti-inflammatory miso-ginger, Mexican protein-forward, cold green goddess (all components cold, neon green dressing), and warm salmon with cold spirulina yogurt sauce.
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Science·21 August 2026·6 min read·MembersSpirulina and atrial fibrillation: anticoagulant interactions, magnesium, and vascular mechanisms
AF involves atrial NOX2-driven oxidative remodelling and fibrosis. Warfarin: spirulina vitamin K is approximately 20–30µg/10g (very low vs green vegetables) but consistent dosing is essential — inform anticoagulation clinic and check INR 2 weeks after starting. DOACs (rivaroxaban, apixaban, dabigatran): no vitamin K interaction; mild antiplatelet addition noted. Magnesium in spirulina (80–120mg/10g) supports cardiac rhythm and is particularly relevant if on loop diuretics.
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Science·21 August 2026·7 min read·MembersSpirulina and mast cell activation syndrome: GLA pathway, histamine, and start-low protocol
MCAS involves inappropriate mast cell degranulation releasing histamine, prostaglandin D2, and leukotrienes LTC4/LTD4. Spirulina's GLA/DGLA competes at 5-LOX reducing leukotriene production — complementary to montelukast. CRITICAL: spirulina as a biological product may itself trigger mast cell activation. Start at 0.1g/day, increase 0.1g/week, monitor 24–48 hours after each increase. Spirulina has low histamine content when fresh; degraded product may have elevated biogenic amines.
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Community·20 August 2026·5 min readSpirulina in curry sauces: heat timing, cold raita technique, and anti-inflammatory combinations
Curry cooking temperatures destroy phycocyanin instantly — the solution is cold accompaniments already embedded in South Asian cuisine: raita, green chutney, and yogurt-based dips. Five recipes: spirulina raita, green spirulina chutney (no cook), cashew coconut curry sauce (add spirulina after cooling), fusion tzatziki with Indian spices, and tahini grain bowl dressing. Spice synergies: curcumin, gingerols, and capsaicin complement phycocyanobilin via different anti-inflammatory mechanisms.
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Science·20 August 2026·6 min read·MembersSpirulina and pulmonary hypertension: endothelial NOX2, NO pathway, and ERA interactions
PAH involves uncoupled eNOS, NOX2-driven NO scavenging, and NF-κB-mediated endothelin-1 overproduction causing progressive pulmonary arterial remodelling. Phycocyanobilin addresses all three mechanisms. Mechanistically complementary to ERAs (additive ET-1 reduction) and PDE5 inhibitors (additive NO pathway amplification). Iron deficiency worsens PAH prognosis — IV iron preferred over oral in right heart failure. All supplement decisions require PAH specialist approval.
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Science·20 August 2026·7 min read·MembersSpirulina and scleroderma: fibrosis, vascular disease, GI complications, and immune context
Scleroderma involves endothelial injury, fibroblast TGF-β activation (NOX4-driven, less addressable by phycocyanobilin), and Raynaud's vasculopathy (NO deficiency, endothelin-1 elevation — both addressed by phycocyanobilin NOX2/NF-κB inhibition). GI dysmotility and SIBO risk: start at 1–2g, powder format for dysphagia. Immunosuppressive treatment (mycophenolate, cyclophosphamide) requires specialist discussion. ERA (bosentan/ambrisentan) combinations mechanistically complementary.
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Community·19 August 2026·5 min readSpirulina protein pancakes: phycocyanin considerations, green colour, and high-protein recipes
Pancake cooking (160–180°C) destroys phycocyanin but chlorophyll survives, giving vivid green colour. Protein and iron are heat-stable and nutritionally intact after cooking. For full phycocyanin benefit, add cold spirulina yogurt topping after cooking. Five recipes: classic green pancakes, oat-banana, savoury chickpea, American-style stack, and cold spirulina yogurt topping for therapeutic phycocyanin delivery alongside cooked pancakes.
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Science·19 August 2026·6 min read·MembersSpirulina and vasculitis: vascular NOX2, ANCA context, and immunosuppressant interactions
ANCA-associated vasculitis involves neutrophil NOX2 respiratory burst on vessel walls — the direct mechanism phycocyanobilin inhibits. However, active vasculitis on rituximab or cyclophosphamide induction requires specialist discussion before spirulina due to NK stimulation opposing immunosuppression. Mild cutaneous vasculitis not on systemic treatment presents lower risk. Anaemia of chronic disease common; ferritin unreliable during active inflammation.
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Science·19 August 2026·6 min read·MembersSpirulina and Raynaud's phenomenon: NO preservation, endothelial NOX2, and iron anaemia
Raynaud's involves endothelial nitric oxide deficiency from NOX2-derived superoxide scavenging and alpha-2 adrenoceptor hypersensitivity. Phycocyanobilin inhibits endothelial NOX2, preserving NO for smooth muscle vasodilation. Iron deficiency worsens Raynaud's via eNOS impairment — ferritin correction is a first step. Complementary with nifedipine; additive with sildenafil/tadalafil (monitor for hypotension). Secondary Raynaud's in autoimmune disease requires rheumatologist awareness.
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Community·18 August 2026·5 min readSpirulina smoothie bowl toppings: texture, colour contrast, and nutrient combinations
Smoothie bowls keep spirulina fully cold — complete phycocyanin preservation. Five topping profiles: iron absorption (kiwi, strawberry, pumpkin seeds for vitamin C), anti-inflammatory protocol (ginger, turmeric, pomegranate, walnuts), protein recovery (hemp, edamame, almond butter), gut microbiome (resistant starch, chia, flax), and cognitive support (lion's mane, dark chocolate, Brazil nuts, blueberries).
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Science·18 August 2026·6 min read·MembersSpirulina and restless legs syndrome: iron deficiency, dopamine, and spinal cord NOX2
RLS is directly linked to brain iron deficiency — ferritin below 75 µg/L is functionally suboptimal for dopamine synthesis via tyrosine hydroxylase in the A11 spinal cord pathway. Spirulina provides 4–8 mg non-haem iron per 5g; morning citrus shots optimise absorption. Therapeutic ferritin correction typically requires oral iron supplementation alongside. No known interaction with pramipexole, ropinirole, gabapentin, or pregabalin.
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Spirulina and sleep disorders: tryptophan, melatonin pathway, neuroinflammation, and timing
Sleep disorders involve disrupted circadian rhythm (CLOCK/BMAL1 gene expression modulated by neuroinflammation), reduced melatonin synthesis (iron-dependent tryptophan hydroxylase), and dysregulated neuroinflammatory cytokines. Spirulina's tryptophan supports the melatonin synthesis pathway; phycocyanobilin reduces the neuroinflammatory disruption. Critically: take in the morning, not before bed — tyrosine and phenylalanine are activating. No known interaction with melatonin, Z-drugs, or benzodiazepines.
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Community·17 August 2026·5 min readSpirulina in stir-fries: adding after heat, sauce strategies, and iron-rich combinations
Wok temperatures (180–220°C) destroy phycocyanin instantly — spirulina must never enter a hot wok. Five stir-fry recipes solve this with cold dipping sauces, finishing sauces added after the pan cools below 40°C, and cold noodle bowls. Sesame and citrus-based sauces disperse spirulina without clumping. Haem iron from meat stir-fries enhances spirulina iron absorption via the meat factor.
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Science·17 August 2026·6 min read·MembersSpirulina and narcolepsy: orexin deficiency, neuroinflammation, and stimulant context
Narcolepsy type 1 involves autoimmune loss of 90% of lateral hypothalamic orexin neurons via T cell neuroinflammation (HLA-DQB1*06:02 strongly associated). Persistent hypothalamic microglial activation and elevated IL-6/TNF-α continue after neuron loss. Spirulina's tyrosine and iron support catecholamine synthesis downstream of orexin loss. Metabolic syndrome is intrinsic to narcolepsy — spirulina's adiponectin/insulin effects are relevant. No known interaction with modafinil, sodium oxybate, or TCAs.
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Science·17 August 2026·7 min read·MembersSpirulina and post-COVID fatigue: mitochondrial dysfunction, NOX2, and iron depletion
Post-COVID fatigue involves persistent microglial NOX2 activation, mitochondrial Complex I/III dysfunction, endothelial NOX2 activation by spike protein, and mast cell activation. Iron status is complicated: hyperferritinaemia from acute-phase response masks true depletion — use transferrin saturation not ferritin alone. PEM risk demands 0.5g starting dose. Phycocyanobilin's NOX2 inhibition directly addresses multiple documented pathways.
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Science·16 August 2026·6 min read·MembersSpirulina and OCD: serotonin, glutamate, microglial activation, and SSRI context
OCD involves CSTC circuit hyperactivity, serotonin hypofunction, glutamate excitotoxicity in the caudate nucleus, and microglial activation documented by TSPO PET imaging in orbitofrontal cortex. Spirulina provides tryptophan (45–60mg/5g) as serotonin precursor. MAOI interaction is an absolute contraindication. Safe with SSRIs and clomipramine. Gut–brain axis via butyrate-producing Firmicutes is mechanistically relevant.
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Community·16 August 2026·5 min readWater quality for spirulina growing: chlorine, hardness, RO, and source water testing
Tap water chlorine and chloramine are biocidal to spirulina — dechlorination is mandatory before use. Chloramine requires activated carbon filtration or ascorbic acid neutralisation (does not dissipate on standing). Reverse osmosis removes >95% of lead, cadmium, and arsenic. Test source water for heavy metals before starting cultivation. Medium hardness water (50–250 mg/L CaCO₃) is optimal.
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Science·16 August 2026·6 min read·MembersSpirulina and schizophrenia: oxidative stress, neuroinflammation, and antipsychotic context
Schizophrenia involves dopamine dysregulation, NMDA receptor hypofunction, glutathione depletion, elevated lipid peroxidation, and microglial activation in prefrontal cortex. Antipsychotic metabolic syndrome (weight gain, insulin resistance) is where spirulina's adiponectin and insulin-sensitising effects are most practically relevant. Iron deficiency is common. Clozapine requires specialist discussion regarding NK stimulation.
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Community·15 August 2026·5 min readSpirulina shots and green juices: concentrated formats for daily dosing
Spirulina shots (2 g in 50ml citrus juice) are the most efficient daily format — 30 seconds to make, 5 seconds to drink. Citrus acid preserves phycocyanin and provides vitamin C for 3× iron absorption. Five recipes: classic citrus shot, ginger-lemon shot, morning green juice, turmeric-spirulina anti-inflammatory shot, and pomegranate antioxidant shot. Take 30–60 minutes before breakfast for maximum iron absorption.
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Science·15 August 2026·6 min read·MembersSpirulina and epilepsy: neuroprotection, AED interactions, and B6 considerations
Epilepsy involves oxidative stress, mitochondrial dysfunction, and neuroinflammation lowering seizure threshold. Phycocyanobilin inhibits microglial NOX2 and reduced hippocampal oxidative stress in kainate seizure models. CYP-inducing AEDs (phenytoin, carbamazepine) deplete B6 and folate — spirulina provides modest replenishment. No documented seizure-triggering risk; no known interaction with levetiracetam, lamotrigine, valproate, or lacosamide.
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Science·15 August 2026·7 min read·MembersSpirulina and organ transplantation: immune stimulation, rejection risk, and drug interactions
Organ transplant recipients require lifelong immunosuppression. Spirulina's NK cell activation and IL-12/IFN-γ induction directly oppose calcineurin inhibitors (tacrolimus, ciclosporin) and could contribute to acute cellular rejection. For most transplant recipients on active immunosuppression: immune stimulation risk outweighs nutritional benefit. Discuss with transplant physician; general answer is likely no.
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Science·14 August 2026·7 min read·MembersSpirulina and perimenopause: iron status, GLA, inflammation, and honest limits
Perimenopause involves fluctuating oestrogen, heavy irregular periods (iron deficiency risk — check ferritin 6–12 monthly), and emerging NOX2-driven cardiovascular risk as oestrogen declines. Phycocyanobilin addresses post-oestrogen endothelial oxidative stress. GLA contributes modestly to vasomotor symptom management. Important: spirulina has no phytoestrogenic activity and does not substitute for HRT.
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Community·14 August 2026·6 min readSpirulina ice cream and frozen desserts: no-churn recipes with full phycocyanin
Frozen desserts preserve phycocyanin fully (-18°C is stable indefinitely). Cold reduces perceived bitterness — spirulina at 8 g per batch is undetectable in ice cream. Five recipes: no-churn coconut milk ice cream, mango banana nice cream, pistachio gelato-style (cool custard to <40°C before adding spirulina), frozen yogurt, and lemon sorbet (acid + spirulina produces electric blue-green colour).
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Science·14 August 2026·7 min read·MembersSpirulina in burns recovery: hypermetabolism, protein demands, and zinc loss
Major burns: REE increases 60–100%, protein requirements 2–3 g/kg/day, zinc loss up to 300 µg/kg/day through wound exudate. Phycocyanobilin inhibits haem-driven NOX2 (same as sickle cell). Acute phase: nutrition managed by burns dietitian only. Rehabilitation (6–8+ weeks): 5–10 g/day supports protein, zinc, and phycocyanin. Iron: check ferritin at 4–8 weeks (elevated acutely from haemolysis, may deficient later).
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Science·13 August 2026·7 min read·MembersSpirulina and cancer cachexia: muscle wasting, cytokines, and nutritional density
Cachexia is cytokine-driven (IL-6, TNF-α, activin A) ubiquitin-proteasome muscle catabolism — not simple malnutrition. Phycocyanobilin inhibits NF-κB upstream of atrogin-1/MuRF1 in cachectic muscle (animal models). Spirulina provides 6 g protein per 10 g in anorexia-limited intake. Checkpoint inhibitor immunotherapy: discuss NK stimulation with oncologist. Check ferritin — many cancers elevate ferritin independently.
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Community·13 August 2026·8 min readStarting a commercial spirulina operation: regulations, HACCP, and economic reality
Commercial spirulina requires food business registration, HACCP system, and batch testing (heavy metals, microcystin, microbiology — £200–600 per batch). EU/UK Novel Foods: spirulina is authorised on the GB Novel Foods list. Production cost ~£15–30/kg dry weight at 100L scale; UK retail £80–150/kg. Summer season may yield 3–8 kg dried spirulina. Local markets and direct-to-consumer are the viable commercial niches.
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Science·13 August 2026·7 min read·MembersSpirulina in post-sepsis recovery: oxidative stress, muscle wasting, and iron complexity
Do NOT use during active sepsis/ICU — NK stimulation is inappropriate during cytokine storm. Post-discharge (3+ months): phycocyanobilin inhibits mitochondrial NOX2 perpetuating ICUAW. Iron status is paradoxical: ferritin massively elevated acutely (acute-phase reactant) but functional iron depletion common; check transferrin saturation at 3 months. Protein (1.5–2 g/kg/day target) is the primary nutritional priority.
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Community·12 August 2026·6 min readSpirulina baked goods: muffins, bread, and scones — colour, protein, and iron
Baking destroys phycocyanin but chlorophyll survives (vivid green colour). Protein, iron, and minerals fully retained. Five recipes: spirulina banana muffins (1 g spirulina per muffin, banana masks taste completely), green tea scones (matcha + spirulina), protein bread loaf, chocolate courgette muffins, and oat cookies. Pair with vitamin C (juice, jam, fruit) for iron absorption.
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Science·12 August 2026·6 min read·MembersSpirulina and mold illness (CIRS): inflammation, mycotoxins, and cautious use
CIRS involves TGF-β pathway dysregulation, complement activation (C3a/C4a), and NF-κB-driven multi-system inflammation. Phycocyanobilin inhibits NOX2 and NF-κB — directly relevant. Critical: use only batches with mycotoxin CoA (aflatoxin, ochratoxin A, microcystin). Separate from binders (charcoal, cholestyramine) by 4+ hours. Start at 0.5 g and titrate slowly over weeks.
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Science·12 August 2026·7 min read·MembersSpirulina and Lyme disease: neuroinflammation, PTLDS, and phycocyanobilin
PTLDS involves persistent microglial NOX2 activation and elevated IL-6/TNF-α in CSF after antibiotic clearance of Borrelia. Phycocyanobilin crosses the BBB and inhibits microglial NOX2 — directly targeting the proposed PTLDS mechanism. No pharmacokinetic interaction with doxycycline, amoxicillin, or ceftriaxone. Babesia co-infection may cause haemolysis — check ferritin before using spirulina iron.
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Science·11 August 2026·6 min read·MembersSpirulina and gastroparesis: gastric emptying, supplement format, and practical guidance
Gastroparesis causes delayed gastric emptying — avoid tablets (slow unpredictable transit); use powder dissolved in liquid. Split into 1.5–2 g with each small meal rather than single large dose. Low-fat, low-insoluble-fibre liquid vehicle is best tolerated. Phycocyanobilin relevant to post-viral myenteric plexus inflammation and diabetic autonomic neuropathy. Insulin users: discuss with diabetes team.
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Community·11 August 2026·6 min readSpirulina pasta: fresh pasta dough, sauces, and colour that survives boiling
Pasta boils at 100°C — phycocyanin destroyed, chlorophyll gives vivid green. Protein and iron fully retained in dough. Cold pasta sauces (spirulina pesto, avocado-spirulina) preserve phycocyanin — add after pasta cools below 40°C. Four recipes: egg tagliatelle, semolina orecchiette, cold pesto pasta, cold avocado pasta.
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Science·11 August 2026·7 min read·MembersSpirulina and SIBO: prebiotic polysaccharides, bacterial overgrowth, and timing
Active SIBO: spirulina polysaccharides could be fermented by small intestinal bacteria, worsening gas and bloating — hold during rifaximin treatment. Post-treatment with confirmed clearance: spirulina polysaccharides support colonic Bifidobacterium restoration; phycocyanobilin addresses residual mucosal NOX2 inflammation. Take with meals (not fasted) to reduce small intestinal fermentation time.
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Science·10 August 2026·7 min read·MembersSpirulina and ulcerative colitis: mucosal NOX2, butyrate, and remission vs flare guidance
UC involves Th2/Th9 mucosal inflammation with NOX2 activation and reduced butyrate-producing bacteria. Phycocyanobilin inhibits colonic NOX2 (reduced MPO activity in DSS colitis models). Spirulina polysaccharides selectively support Faecalibacterium prausnitzii and butyrate production. Mesalazine: complementary. Anti-TNF biologics: discuss with gastroenterologist. Active flare: pause or 1–2 g max.
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Science·10 August 2026·8 min read·MembersSpirulina and Crohn's disease: Th1/Th17 inflammation, iron malabsorption, and biologics caution
Crohn's involves Th1/Th17 transmural inflammation with macrophage NOX2 activation. Iron deficiency affects 30–70% from GI blood loss and malabsorption. Critical: spirulina pseudocobalamin blocks B12 absorption — essential to flag for terminal ileum disease. Ustekinumab (anti-IL-12/23) interaction with spirulina's IFN-γ induction requires specialist review. Active flare: reduce to 1–2 g; remission: 3–5 g.
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Community·10 August 2026·6 min readSpirulina breakfast bowls: smoothie bowls, overnight oats, and warm grain bowls
Smoothie bowls and overnight oats preserve phycocyanin fully (serve cold). Warm quinoa bowls: add spirulina after cooling to below 40°C. Five recipes: deep teal açaà bowl, green mango bowl, spirulina overnight oats, warm quinoa breakfast bowl with almond butter, and bircher muesli. Mango and citrus toppings provide vitamin C for iron absorption.
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Community·9 August 2026·6 min readFreeze-drying spirulina at home: equipment, process, and phycocyanin preservation
Freeze-drying preserves 95–98% phycocyanin (vs 85–95% dehydrator, 40–80% spray drying). Home freeze dryers cost £1,500–3,000. Pre-freeze to -40°C, primary dry at -10 to 0°C shelf temp (never exceed 0°C during primary drying to protect phycocyanin), secondary dry at 20°C max. Shelf life: 2–5 years sealed vs 6–12 months dehydrator. Seal within 30 minutes of cycle end — powder is highly hygroscopic.
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Science·9 August 2026·7 min read·MembersSpirulina and Wilson's disease: copper content, zinc therapy, and careful assessment
Wilson's disease (ATP7B mutation) causes copper accumulation. Spirulina contains 0.3–0.6 mg copper per 10 g — contraindicated during chelation therapy (D-penicillamine/trientine). During zinc maintenance: spirulina copper (up to 60% of daily copper restriction target at 10 g) requires specialist discussion. Phycocyanobilin addresses copper-driven NOX2/Fenton oxidative stress but copper content is the limiting factor.
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Science·9 August 2026·7 min read·MembersSpirulina and haemochromatosis: iron overload, phycocyanin, and contraindication
Hereditary haemochromatosis (HFE C282Y) impairs hepcidin signalling causing progressive iron accumulation. Spirulina iron is directly contraindicated in diagnosed HH with elevated ferritin. Post-phlebotomy maintenance with normalised ferritin: very low-dose spirulina may provide phycocyanin benefit with minimal iron (1–2 g/day, 0.3–0.8 mg iron). HFE heterozygotes with normal iron studies: discuss with physician.
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Science·8 August 2026·7 min read·MembersSpirulina and Huntington's disease: mitochondrial dysfunction, oxidative stress, and nutrition
HD involves mHTT-driven Complex II/III mitochondrial impairment, NOX2 microglial activation, PGC-1α suppression, and hypermetabolism requiring 15–25% above predicted caloric intake. Phycocyanobilin inhibits NOX2; spirulina protein supports elevated nutritional demands and dysphagia-modified diets. No clinical trials. Disease trajectory is genetic; realistic expectations are essential.
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Community·8 August 2026·5 min readSpirulina salad dressings: five recipes for full phycocyanin preservation
Cold-prepared dressings preserve phycocyanin fully. Disperse spirulina in oil first, then add acid to emulsify. Five recipes: lemon vinaigrette, tahini-lemon, miso-ginger (sodium caution for Ménière's), creamy avocado, and citrus-herb. Pair with iron-rich salad ingredients; avoid calcium toppings and tea within 2 hours for maximum iron absorption.
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Science·8 August 2026·7 min read·MembersSpirulina and motor neurone disease (ALS): oxidative stress, NOX2, and honest limits
ALS involves NOX2-activated microglia, SOD1 mutations, TDP-43 aggregation, and mitochondrial Complex I dysfunction. Phycocyanobilin inhibits microglial NOX2 (the enzyme shown to accelerate motor neuron death in SOD1 models). Critical: iron is often elevated in ALS (CSF ferritin is a progression marker) — check ferritin before use. No human trials exist.
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Science·7 August 2026·7 min read·MembersSpirulina and cerebral palsy: oxidative brain injury, iron, and nutritional support
CP involves fixed perinatal brain injury with ongoing microglial activation. Iron deficiency affects majority of CP children due to dysphagia and restricted diet — impairing dopamine synthesis, myelination, and mitochondrial function. Phycocyanobilin crosses the BBB and inhibits NOX2 (the same mechanism as perinatal HIE secondary injury). All evidence preclinical. Heavy metal CoA essential; speech therapy swallowing assessment required.
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Community·7 August 2026·8 min readClosed photobioreactors for home spirulina: tubular, flat panel, and hybrid designs
Closed PBRs achieve 1–4 g/L/day productivity vs 0.1–0.3 g/L/day for open raceways, with dramatically lower contamination risk and precise CO₂ control via pH-triggered solenoid valve. Tubular PBRs: 10–40m transparent tubing per 10L. Flat panel PBRs: 5–8 cm light path, banked with LED panels. Build cost £200–400 DIY; suited for growers wanting >50g dry/week.
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Science·7 August 2026·7 min read·MembersSpirulina and Ménière's disease: cochlear oxidative stress, sodium, and the evidence
Ménière's disease involves endolymphatic hydrops and cochlear microvascular NOX2-driven oxidative stress depleting NO in the stria vascularis. Phycocyanobilin inhibits NOX2, supporting cochlear microcirculation. Sodium caution: spirulina contains 150–300 mg sodium per 10 g — manageable at 5 g/day but check product label when on strict sodium restriction.
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Community·6 August 2026·7 min readScaling up spirulina production: from 10L to 100L and beyond
Scaling introduces CO₂ limitation (pH > 10.8 indicates carbon depletion — add CO₂ injection or twice-weekly bicarbonate), mixing dead zones requiring paddle wheels or airlift, and faster contamination propagation. Only scale stable cultures; freeze backup before every volume change. At 100L with 3 g/L density: 12–15 g dry spirulina per harvest.
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Community·6 August 2026·6 min readSpirulina dips and spreads: hummus, guacamole, pesto, and tzatziki recipes
Cold-prepared dips preserve phycocyanin fully. Five recipes: spirulina hummus, guacamole (avocado fat enhances carotenoid absorption), pesto (stir into hot pasta off heat to preserve phycocyanin), tzatziki, and white bean roasted garlic spread. Lemon juice present in all recipes enhances non-haem iron absorption.
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Community·6 August 2026·6 min readSpirulina energy bars: no-bake recipes that preserve phycocyanin
No-bake energy bars keep spirulina below 40°C, preserving phycocyanin fully. Five recipes: classic date-nut bars, tahini lemon oat bars, chocolate-dipped bars (cool chocolate to 35–38°C before coating), mango coconut protein bars, and baked oat bars (iron/protein retained, phycocyanin lost). Lemon/lime juice in recipes enhances iron absorption 3×.
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Community·5 August 2026·6 min readSpirulina wraps and flatbreads: recipes, heat limits, and colour that actually works
Baked flatbreads reach 180–220°C — phycocyanin is destroyed, but chlorophyll survives giving vivid green colour. Protein, iron, and minerals are retained in baked formats. Five recipes: spirulina flour tortillas, naan, pita pockets, raw rice paper rolls (full phycocyanin preservation), and lettuce cups with spirulina dressing.
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Science·5 August 2026·6 min read·MembersSpirulina and food allergies: Th2 immunology, GLA, and what the evidence supports
Food allergies involve IgE sensitisation, mast cell degranulation, and Th2 immune skewing. GLA from spirulina reduces leukotriene synthesis by competing with arachidonic acid at 5-LOX. Phycocyanin shifts Th2 toward Th1 in animal models. Spirulina cannot prevent anaphylaxis — epinephrine auto-injector is irreplaceable. Start 0.5 g to rule out spirulina allergy first.
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Science·5 August 2026·7 min read·MembersSpirulina and autism spectrum disorder: neuroinflammation, iron, and the evidence
ASD involves microglial NOX2 activation, oxidative stress, gut dysbiosis, and frequent iron/zinc/B-vitamin deficiency from selective eating. Phycocyanobilin crosses the blood-brain barrier and inhibits microglial NADPH oxidase. All evidence is preclinical — no clinical ASD trials exist. Heavy metal CoA essential for children; start at 0.5–1 g/day.
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Community·4 August 2026·6 min readSpirulina culture maintenance: daily, weekly, and monthly routines
Daily: pH check (5 min), colour/temperature visual. Weekly: nitrogen replenishment (NaNO₃ 0.2–0.5 g/L), bicarbonate top-up, density assessment. Monthly: microscope contamination check, freeze backup. Partial medium refresh every 3–4 weeks covers trace minerals. Consistent maintenance prevents slow degradation leading to culture crashes.
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Science·4 August 2026·7 min read·MembersSpirulina and sickle cell disease: NADPH oxidase, haem-driven inflammation, and iron overload caution
Haem-released from chronic haemolysis activates NOX2 in SCD vascular endothelium — the exact NADPH oxidase isoform phycocyanobilin inhibits. Critical: transfused SCD patients almost always have iron overload (ferritin >1,000 µg/L) — spirulina iron is contraindicated. Non-transfused patients with normal ferritin: discuss with haematologist.
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Science·4 August 2026·6 min read·MembersSpirulina and creatine: complementary mechanisms, stacking guide, and who benefits
Creatine targets the ATP-PCr system for explosive power (0–10 seconds); spirulina targets mitochondrial fat oxidation, iron-dependent oxygen delivery, and NADPH oxidase recovery for endurance. No pharmacokinetic interaction — safe to stack. Combined coverage for mixed-sport athletes and anyone needing both power and recovery.
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Science·3 August 2026·7 min read·MembersSpirulina and cardiomyopathy: cardiac NADPH oxidase, myocyte protection, and drug cautions
NOX2 and NOX4 are elevated in DCM and HCM — generating myocardial fibrosis, calcium leak, and systolic dysfunction. Phycocyanobilin inhibits both; animal cardiomyopathy models show reduced fibrosis and apoptosis. Complex drug interaction profile: warfarin, amiodarone, digoxin, cardiac immunosuppressants all require cardiology guidance.
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Community·3 August 2026·6 min readSpirulina granola recipes: baked, no-bake, and the iron absorption strategy
Baked granola at 160°C destroys phycocyanin but Maillard browning perfectly masks spirulina taste. No-bake raw granola preserves phycocyanin but needs stronger masking agents (cacao, vanilla). Three recipes. Iron absorption optimisation: soak oats to reduce phytate, pair with vitamin C, avoid dairy milk.
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Science·3 August 2026·7 min read·MembersSpirulina and menopause weight gain: adiponectin, insulin resistance, and the evidence
Menopausal weight gain is driven by oestrogen decline shifting fat to visceral depots, reduced adiponectin, and insulin resistance — not simply slower metabolism. Spirulina increases adiponectin 10–25% in RCTs; phycocyanin reduces adipose NF-κB inflammation. Postmenopausal Korean RCT showed significant lipid improvements at 8 g/day.
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Science·2 August 2026·7 min read·MembersSpirulina and altitude sickness: NADPH oxidase, EPO iron response, and AMS prevention
AMS involves NADPH oxidase-driven ROS in hypoxic endothelial cells, impairing NO bioavailability and blood-brain barrier integrity. Phycocyanobilin inhibits NADPH oxidase without blunting HIF-1α adaptation signalling. Pre-altitude iron loading (ferritin target >50 µg/L) is the most actionable intervention for EPO-driven acclimatisation.
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Community·2 August 2026·7 min readSpirulina growing troubleshooting: brown culture, slow growth, crashes, and recovery
Brown/yellow culture = nitrogen starvation (fix: add sodium nitrate) or heat stress. Slow growth = temperature, carbon, or nutrient limitation. Sinking filaments = gas vacuole collapse from light shock. Foul smell = bacterial contamination — restart with clean inoculant. Culture crash recovery protocol: pH first, then rotifer check, then transfer to fresh medium.
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Science·2 August 2026·8 min read·MembersSpirulina and rheumatoid arthritis: immune stimulation concern, GLA evidence, and who to avoid
RA is autoimmune — spirulina's NK cell activation and IFN-γ upregulation are contraindicated with biologic DMARDs (anti-TNF, JAK inhibitors). GLA has modest Cochrane-reviewed RCT evidence for RA joint symptoms; spirulina provides ~10% of therapeutic GLA dose. Patients in remission on methotrexate: discuss with rheumatologist.
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Science·1 August 2026·8 min read·MembersSpirulina and colorectal cancer prevention: phycocyanin, butyrate, and the evidence
CRC develops through NF-κB mucosal inflammation, COX-2 overexpression, and butyrate depletion from dysbiosis. Phycocyanin inhibits NF-κB and COX-2 in CRC cell lines; spirulina's prebiotic effect increases butyrate producers. Preclinical evidence is mechanistically strong — no human CRC trial exists, and colonoscopy screening remains irreplaceable.
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Community·1 August 2026·5 min readSpirulina chocolate bark recipes: dark chocolate, matcha, and sea salt caramel
Dark chocolate at 70%+ cocoa completely eliminates spirulina sea flavour through fat binding and polyphenol dominance. No-bake preparation at 35–38°C preserves phycocyanin. Four recipes: classic dark chocolate, matcha spirulina, sea salt caramel tahini swirl, and white chocolate teal bark.
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Science·1 August 2026·7 min read·MembersSpirulina and prostate health: zinc, BPH, 5-alpha reductase, and the evidence
The prostate has 10× higher zinc than most organs — zinc inhibits 5-alpha reductase (DHT production) and prostatic cell proliferation. Phycocyanin inhibits NF-κB constitutively active in BPH and prostate cancer tissue. Animal BPH models show reduced prostate weight; no human BPH RCT with spirulina yet. Complementary with lycopene.
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Community·31 July 2026·7 min readOutdoor spirulina growing: solar production, weather management, and seasonal strategy
Outdoor production achieves 3–5× higher biomass per litre than indoor LED growing at peak summer. Challenges: temperature spikes above 45°C in direct sun (needs shade cloth), rain dilution (needs quick-deploy cover), and higher contamination risk from insects and wild cyanobacteria. Viable season in UK/Northern Europe: May–September.
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Science·31 July 2026·7 min read·MembersSpirulina and viral hepatitis B and C: antiviral mechanisms and immune cautions
Calcium spirulan inhibits enveloped virus cell entry in vitro — including HCV-relevant mechanisms. Phycocyanin reduces NF-κB hepatocellular inflammation. Double-edged NK cell consideration in active hepatitis: immune stimulation can worsen hepatic flares. Post-SVR HCV patients are the clearest appropriate use case.
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Science·31 July 2026·7 min read·MembersSpirulina and liver cirrhosis: anti-fibrotic mechanisms, protein cautions, and stage guidance
Phycocyanin inhibits TGF-β/Smad2 in hepatic stellate cells (the fibrosis driver) and NF-κB in Kupffer cells. Animal fibrosis models consistently show spirulina reduces collagen deposition. Critical cautions in cirrhosis: protein/ammonia budget in hepatic encephalopathy, drug metabolism changes, and immune complexity. Compensated cirrhosis (Child-Pugh A) is more appropriate than decompensated.
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Science·30 July 2026·7 min read·MembersSpirulina and adrenal fatigue: HPA axis, B vitamins, iron, and what the evidence shows
Adrenal fatigue is not a recognised diagnosis — the symptom cluster reflects HPA dysregulation, iron deficiency, B vitamin depletion, and mitochondrial stress. Spirulina addresses the nutritional depletion component (iron, B vitamins, phycocyanobilin NADPH oxidase inhibition) but cannot lower cortisol — that requires ashwagandha and lifestyle intervention.
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Science·30 July 2026·7 min read·MembersSpirulina and joint pain: COX-2, NF-κB, GLA, and the evidence
Joint pain from osteoarthritis and musculoskeletal inflammation converges on NF-κB and COX-2 — the same targets as NSAIDs. Phycocyanin inhibits both pathways; GLA produces anti-inflammatory PGE1 and reduces LTB4. Rheumatoid arthritis requires caution: immune stimulation and biologic DMARDs are contraindicated together.
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Community·30 July 2026·6 min readSpirulina drying methods: freeze drying, spray drying, and home sun drying compared
Freeze drying preserves 95%+ of phycocyanin; spray drying (commercial standard) destroys 20–60%; food dehydrator at 38–40°C preserves 85–95%. Home growers can achieve higher phycocyanin retention than commercial spray-dried products by using a dehydrator at low temperature.
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Community·29 July 2026·6 min readSpirulina in soups: stir-in technique, temperature guidance, and four recipes
Hot broth above 70°C degrades phycocyanin rapidly — the stir-in method (adding spirulina to a bowl that has cooled to below 65°C) preserves it fully. Four recipes: miso, gazpacho, coconut lentil, and chilled cucumber avocado. Miso soup is the ideal pairing — fermented umami completely dominates spirulina flavour.
Read article- Science·29 July 2026·7 min read·Members
Spirulina and peripheral neuropathy: Schwann cell oxidative stress, B vitamins, and cautions
Peripheral neuropathy — diabetic, chemotherapy-induced, alcoholic, or B12-deficiency — shares Schwann cell oxidative damage as a convergent mechanism. Phycocyanobilin inhibits NOX4 in Schwann cells. Critical B12 caution: spirulina pseudocobalamin is not bioavailable — vegans with neuropathy must supplement methylcobalamin urgently.
Read article - Science·29 July 2026·8 min read·Members
Spirulina and ME/CFS: mitochondrial dysfunction, NADPH oxidase, and the evidence
ME/CFS involves constitutive NOX2 overactivation generating mitochondrial ROS, neuroinflammation, and post-exertional malaise. Phycocyanobilin directly inhibits NADPH oxidase — targeting the documented pathological pathway. No ME/CFS clinical trial exists; the mechanistic case is specific. Start low (1–2 g/day) due to heightened sensitivity in this population.
Read article - Community·28 July 2026·6 min read
Spirulina frozen treats: popsicle, nice cream, and ice cream recipes
Freezing is the optimal condition for spirulina phycocyanin preservation — degradation essentially stops at −18°C. Five tested recipes: mango coconut popsicles, tropical nice cream, matcha coconut pops, chocolate fudge bars, and lemonade ice. Sweet tropical flavours completely mask spirulina taste.
Read article - Science·28 July 2026·7 min read·Members
Spirulina and restless legs syndrome: iron, dopamine, and the evidence
RLS is causally linked to brain iron deficiency — iron is a cofactor for tyrosine hydroxylase (dopamine synthesis) in the substantia nigra. Clinical guidelines target ferritin above 75 µg/L for RLS, higher than the anaemia threshold. Spirulina is appropriate for maintenance; severe deficiency requires therapeutic iron first.
Read article - Science·28 July 2026·7 min read·Members
Spirulina and anxiety: tryptophan, neuroinflammation, and iron deficiency
Anxiety involves HPA dysregulation, serotonin pathway insufficiency, and neuroinflammation. Spirulina provides tryptophan (serotonin precursor at food-matrix levels), phycocyanobilin reduces IL-6/TNF-α that divert tryptophan into the kynurenine pathway, and iron repletion restores tryptophan hydroxylase activity. Not a standalone anxiolytic — works best combined with ashwagandha for HPA support.
Read article - Science·27 July 2026·7 min read·Members
Spirulina and macular degeneration: zeaxanthin, lutein, and AMD prevention
Zeaxanthin and lutein are the only carotenoids concentrated in the macula — they absorb blue light and quench singlet oxygen in RPE cells. Spirulina provides 0.8–1.5 mg zeaxanthin per 10 g (one of the richest dietary sources). Complementary with AREDS2 supplementation for intermediate AMD; phycocyanobilin crosses the blood-retinal barrier.
Read article - Community·27 July 2026·7 min read
Spirulina species guide: platensis vs maxima and strain selection for home growers
Arthrospira platensis dominates commercial and home production — tighter helix, higher phycocyanin (14–20% dry weight), and wider pH tolerance than A. maxima. For home growers, platensis UTEX 2340 is the recommended starting strain. Strain-level variation within species matters more than species choice.
Read article - Science·27 July 2026·7 min read·Members
Spirulina and IBS: gut microbiome, visceral hypersensitivity, and the evidence
IBS involves gut microbiome dysbiosis, intestinal hypersensitivity, and low-grade mucosal inflammation. Spirulina's prebiotic polysaccharides support butyrate producers; phycocyanin inhibits intestinal NF-κB. Start low (1 g/day) — some IBS subtypes may be worsened by fermentable polysaccharides.
Read article - Science·26 July 2026·6 min read·Members
Spirulina and environmental allergies: dust mite, mould, pet dander evidence
Dust mite, mould, and pet dander allergies share the identical Th2 IgE mechanism as pollen hay fever. The Cingi RCT (perennial allergic rhinitis) provides the most directly applicable evidence. Year-round consistent use is needed — not seasonal. Complementary with allergen immunotherapy.
Read article - Science·26 July 2026·6 min read·Members
Spirulina and blood clotting: antiplatelet effects, warfarin interaction, and who should be cautious
GLA→PGE1 provides mild antiplatelet effects by competing with TXA2. Warfarin patients: spirulina vitamin K1 (~25–40 µg/10g) requires consistent daily intake at a fixed dose — stopping and starting shifts INR. Antiplatelet drug users: additive effect is mild but worth informing the prescriber. Stop 1–2 weeks before elective surgery.
Read article - Community·26 July 2026·5 min read
Spirulina hummus: the ideal recipe for hiding the taste completely
Hummus has the ideal spirulina-masking combination: high tahini fat (traps volatile sulphur compounds), lemon acid (protonates flavour molecules), and garlic allicin (dominates the aromatic space). Up to 8–12 g spirulina per batch with no detectable sea flavour. Three tested variations.
Read article - Community·25 July 2026·6 min read
Spirulina aeration and mixing: why agitation matters and how to do it at home
Without mixing, spirulina filaments float to the surface, creating a productive surface layer and dark stagnant volume beneath. Continuous agitation cycles cells through the light zone, distributes COâ‚‚, and homogenises temperature. Air pumps work for small volumes; horizontal circulation pumps are more effective for shallow trays.
Read article - Science·25 July 2026·6 min read·Members
Spirulina during breastfeeding: safety, iron, and what to check
Generally considered safe at standard doses from verified heavy-metal-free sources — mandatory, not optional, as heavy metals transfer into breast milk and infants absorb them at higher rates. Valuable for post-partum iron repletion. Vegan nursing mothers must use separate B12 supplementation; spirulina is not a reliable vegan B12 source.
Read article - Science·25 July 2026·6 min read·Members
Spirulina and chronic kidney disease (CKD): phosphate, protein, potassium, and cautions
CKD requires restriction of phosphate (~75–100 mg/10g in spirulina), potassium (~150–200 mg/10g), and protein (6 g/10g). Stages 1–2 may be acceptable with monitoring; Stages 3–5 require explicit nephrology guidance. Phycocyanin's anti-inflammatory potential is mechanistically relevant but outweighed by mineral concerns without medical oversight.
Read article - Community·24 July 2026·7 min read
Spirulina growing media: Zarrouk medium, simplified home formulas, and nutrient management
Zarrouk's medium: 16.8 g/L NaHCO₃ (carbon and alkalinity), 2.5 g/L NaNO₃ (nitrogen), 0.5 g/L K₂HPO₄ (phosphorus), plus sulphate, iron-EDTA, and trace minerals. Simplified home formula using food-grade ingredients costs £1–2 per 20L per month. Use RO water — hard tap water causes phosphate precipitation.
Read article - Science·24 July 2026·7 min read·Members
Spirulina and PCOS: insulin resistance, androgens, inflammation, and iron
PCOS is driven by insulin resistance (which drives androgen excess via ovarian LH stimulation), chronic NF-κB inflammation impairing follicular development, and iron dysregulation. Spirulina addresses insulin sensitisation and ovarian inflammation mechanistically. Check ferritin — some PCOS patients have elevated iron, not deficiency.
Read article - Science·24 July 2026·7 min read·Members
Spirulina and hypertension: nitric oxide, NADPH oxidase, and the blood pressure evidence
Multiple RCTs confirm spirulina reduces SBP by 4–8 mmHg and DBP by 2–4 mmHg. Mechanism: phycocyanobilin inhibits vascular NADPH oxidase superoxide, protecting NO bioavailability; Nrf2 activation upregulates eNOS. A 4–5 mmHg SBP reduction reduces stroke risk by ~14%. Most relevant in Stage 1 hypertension and metabolic syndrome.
Read article - Community·23 July 2026·6 min read
Spirulina salad dressing recipes: five formulas that hide the taste completely
Salad dressings are the ideal cold-preparation spirulina vehicle — phycocyanin fully preserved, oil matrix binds volatiles, acid reduces flavour volatility, and strong aromatics (garlic, ginger, tahini, miso) dominate. Five tested recipes from lemon tahini to avocado lime, delivering 1–3 g spirulina per serving.
Read article - Community·23 July 2026·6 min read
Spirulina for cyclists: endurance performance, fat oxidation, and recovery
The Kalafati RCT used competitive cyclists: 6 g/day for 4 weeks improved time-to-exhaustion, increased fat oxidation rate (sparing glycogen), and reduced post-exercise MDA. Cyclists also face specific iron challenges from saddle vibration haemolysis and GI stress. Start 4 weeks before target events.
Read article - Science·23 July 2026·6 min read·Members
Spirulina and pancreatitis: anti-inflammatory mechanisms and important cautions
Phycocyanin reduces pancreatic NF-κB activation, acinar necrosis, and serum amylase/lipase in rodent pancreatitis models. No human pancreatitis trial exists. Acute pancreatitis is a medical emergency — no spirulina role. In stable chronic pancreatitis, spirulina may provide nutritional support and anti-inflammatory adjunct with specialist approval.
Read article - Science·22 July 2026·7 min read·Members
Spirulina and sports recovery: DOMS, oxidative stress, and the exercise evidence
Two human exercise RCTs: Kalafati (2010) showed 6 g/day spirulina for 4 weeks increased time-to-exhaustion by 21 seconds and reduced post-exercise MDA in cyclists. Lu (2006) showed reduced IL-6 at 24h post-exercise. Phycocyanobilin NADPH oxidase inhibition reduces the neutrophil oxidative burst that drives DOMS.
Read article - Science·22 July 2026·6 min read·Members
Spirulina for children: safety, dosing by age, and practical guidance
Safe from age 4+ at weight-based doses (1–2 g/day for 4–8 year olds). Nutrition programmes in developing countries have used spirulina in under-5 malnutrition without adverse effects. Critical: source must have batch-specific heavy metal CoA — children are more vulnerable to lead and arsenic. Vegan children need separate B12 supplementation.
Read article - Science·22 July 2026·8 min read·Members
Spirulina and longevity: Nrf2 hormesis, senescence, and the anti-aging evidence
Spirulina activates Nrf2 (the master antioxidant transcription factor that declines with age), inhibits NADPH oxidase-driven mitochondrial damage, and reduces SASP inflammatory output — three of the four primary aging pathways. C. elegans and fly lifespan extensions observed; human evidence is mechanistic and indirect.
Read article - Science·21 July 2026·7 min read·Members
Spirulina and migraines: magnesium, NF-κB neuroinflammation, and what the evidence shows
Magnesium lowers the cortical spreading depression threshold — 50–60% of migraine patients are deficient during attacks. Spirulina provides sub-therapeutic magnesium (50–65 mg/10g vs 400 mg therapeutic). Phycocyanin's NF-κB neuroinflammation inhibition and GLA's prostaglandin balance are complementary but secondary to dedicated magnesium and riboflavin.
Read article - Science·21 July 2026·7 min read·Members
Spirulina and hair growth: protein, iron, zinc, and what the evidence shows
Iron deficiency is the most common nutritional driver of reduced hair growth rate — ferritin below 30 µg/L predicts telogen effluvium. Spirulina addresses iron, complete protein (including cysteine for keratin), zinc (cell division and 5-alpha reductase inhibition), and B vitamins. Most impactful for women, vegans, and post-partum recovery.
Read article - Community·21 July 2026·6 min read
Spirulina green pancake recipes: savoury and sweet formulas that taste good
Pancake batter is an effective spirulina vehicle — egg lecithin and fat bind volatile flavour compounds, Maillard browning products dominate. Four recipes: classic green breakfast, banana spirulina, savoury herb crêpes, and protein pancakes. Phycocyanin partially degrades on the griddle; protein and minerals remain intact.
Read article - Science·20 July 2026·6 min read·Members
Spirulina and hay fever: the RCT evidence for allergic rhinitis
The best-evidenced supplement for allergic rhinitis: a 150-patient double-blind RCT (Cingi 2008) showed spirulina 2 g/day for 16 weeks significantly reduced nasal symptoms, IL-4, and total IgE vs placebo. Start 4–8 weeks before pollen season. Complement, not replace, antihistamines.
Read article - Community·20 July 2026·6 min read
Spirulina harvest scheduling: when to harvest, cycle frequency, and yield planning
Harvest 30–40% of culture volume when density reaches 2–4 g/L — every 3–4 days at optimal temperature. Under-harvesting leads to stationary phase decline; over-harvesting depletes inoculum. A 20L culture under good conditions yields approximately 28–35 g dry spirulina per week.
Read article - Science·20 July 2026·7 min read·Members
Spirulina and inflammation markers: CRP, IL-6, TNF-α, and the clinical evidence
Multiple RCTs confirm spirulina reduces hsCRP by 0.7–1.5 mg/L and MDA by 20–35% in metabolic syndrome, T2DM, and cardiovascular risk populations. Mechanisms: phycocyanin NF-κB inhibition (via IKK and TLR4) and Nrf2 antioxidant-anti-inflammatory crosstalk. Effect is adjunctive — most meaningful alongside dietary and lifestyle intervention.
Read article - Science·19 July 2026·7 min read·Members
Spirulina and asthma: bronchial inflammation, IgE, eosinophils, and the evidence
Allergic asthma is Th2-driven — the same pathway as atopic dermatitis and allergic rhinitis. The allergic rhinitis RCT (Cingi 2008) showed spirulina reduced IL-4 and IgE. Animal asthma models show reduced eosinophil counts, IL-5, and airway hyperresponsiveness. No bronchodilator effect — an adjunct to, not replacement for, inhaler therapy.
Read article - Editorial·19 July 2026·5 min read
Spirulina storage guide: shelf life, phycocyanin degradation, and the right container
Phycocyanin degrades with UV light, heat above 40°C, and moisture. Store in dark, airtight, cool conditions. Powder after opening: use within 3–6 months. Tablets: 2–3 years sealed. Colour shift from blue-green to olive indicates phycocyanin loss. Dark glass is the best home storage container.
Read article - Science·19 July 2026·7 min read·Members
Spirulina and wound healing: phycocyanin, zinc, and the tissue repair evidence
Wound healing requires inflammation resolution (phycocyanin NF-κB inhibition), collagen synthesis (zinc cofactor), and tissue oxygenation (iron for haemoglobin). Phycocyanin has shown faster wound closure and reduced scar formation in topical animal models. Pair with vitamin C — the critical co-nutrient spirulina doesn't supply.
Read article - Science·18 July 2026·8 min read·Members
Spirulina and cognitive decline: neuroinflammation, vascular risk, and the evidence
Phycocyanobilin crosses the blood-brain barrier and inhibits microglial NADPH oxidase — reducing neuroinflammation in Alzheimer's and vascular dementia models. Cardiovascular RCT evidence (blood pressure, lipids) addresses vascular dementia risk factors. No human cognitive endpoint trial yet; strong mechanistic and indirect evidence.
Read article - Science·18 July 2026·7 min read·Members
Spirulina and the gut microbiome: prebiotic effects, butyrate, and dysbiosis
Spirulina polysaccharides selectively increase bifidobacteria and butyrate producers (including Faecalibacterium prausnitzii) in animal and emerging human studies. Phycocyanin inhibits NF-κB in intestinal mucosa. Calcium spirulan chelates heavy metals that are toxic to commensal bacteria.
Read article - Community·18 July 2026·6 min read
Spirulina pasta and pesto recipes: green dishes that actually taste good
Pasta and pesto are among the best spirulina vehicles — olive oil and nut fats bind spirulina volatiles while basil and garlic dominate. Three tested pesto formulas (classic basil, walnut, avocado-dairy-free) and spirulina fresh pasta dough. Phycocyanin fully preserved in cold-prepared pesto.
Read article - Science·17 July 2026·7 min read·Members
Spirulina and eczema (atopic dermatitis): Th2 modulation, GLA, and the evidence
Atopic dermatitis is Th2-skewed immunity — excess IL-4, IL-13, and IgE. Spirulina's NK cell activation and IFN-γ upregulation push the balance toward Th1, while GLA supports the impaired skin barrier lipid matrix. Indirect evidence from allergic rhinitis RCT and animal models; no AD-specific human trial yet.
Read article - Science·17 July 2026·8 min read·Members
Spirulina and type 2 diabetes: glucose, lipids, and the RCT evidence
Multiple RCTs show spirulina reduces fasting glucose (10–20 mg/dL), HbA1c (0.5–1%), triglycerides (15–25%), and LDL in T2DM. Mechanisms: phycocyanin NF-κB inhibition in islets, AMPK activation, GLA-driven insulin receptor sensitisation, and Nrf2-mediated beta-cell antioxidant protection.
Read article - Science·17 July 2026·7 min read·Members
Spirulina and skin aging: antioxidants, collagen support, and what the evidence shows
Photoaging is driven by UV-induced superoxide from NADPH oxidase — the primary target of phycocyanobilin. Beta-carotene provides singlet oxygen quenching and mild UV photoprotection. GLA maintains skin barrier lipids. Zinc supports collagen synthesis enzymes. Four upstream mechanisms for skin aging prevention.
Read article - Community·16 July 2026·7 min read
Spirulina for hikers and trekkers: altitude, iron, and portable nutrition
Hikers face altitude-induced oxidative stress, iron demand for EPO-driven red blood cell synthesis, high protein needs, and the constraint of carrying lightweight food. Spirulina provides iron, complete protein, phycocyanin antioxidants, and B12 in a format that fits in a shirt pocket.
Read article - Community·16 July 2026·7 min read
Spirulina pH management: optimal range, bicarbonate buffering, and crash prevention
Spirulina thrives at pH 9.5–10.5. Below 9, contamination risk rises sharply. Above 11, growth stalls. Daily pH monitoring, bicarbonate buffering, and understanding what drives pH shifts are the foundation of stable spirulina cultivation.
Read article - Editorial·16 July 2026·7 min read
Spirulina liver detox: separating real evidence from marketing claims
Spirulina has genuine, evidence-based liver benefits — two RCTs show ALT and AST reduction in NAFLD, and Nrf2 activation supports phase II detoxification enzymes. But 'detox' language in supplement marketing is almost always misleading. Here's what spirulina actually does and doesn't do for the liver.
Read article - Science·15 July 2026·7 min read·Members
Spirulina and immunosuppression: transplant patients, biologics, and autoimmune therapy
Solid organ transplant recipients and patients on biologics (anti-TNF, rituximab, JAK inhibitors) should not use spirulina without specialist approval. NK cell activation and IFN-γ stimulation from spirulina directly oppose immunosuppressive therapeutic goals — a genuine contraindication, not a general precaution.
Read article - Community·15 July 2026·7 min read
Spirulina cultivation temperature: optimal range, heat management, and seasonal growing
Optimal spirulina growth occurs at 30–36°C. Below 20°C growth stalls; above 40°C phycocyanin degrades. Aquarium heaters are the most practical heating solution for home growers. Seasonal indoor/outdoor cycling in temperate climates. Temperature affects phycocyanin content as much as light intensity.
Read article - Science·15 July 2026·7 min read·Members
Spirulina and PMS: GLA, magnesium, B6, and the prostaglandin mechanism
PMS involves prostaglandin excess (GLA→PGE1 competes with PGF2α), magnesium insufficiency, and serotonin fluctuation. Spirulina addresses all three through GLA, magnesium, and B6 — though at sub-therapeutic levels for each individually. Add dedicated magnesium glycinate and B6 in the luteal phase for significant symptoms.
Read article - Science·14 July 2026·6 min read·Members
Spirulina and pregnancy nausea: B6, reducing dose, and managing morning sickness
B6 is a first-line evidence-based treatment for morning sickness. Spirulina provides B6 in food-matrix form but at sub-therapeutic doses — add 10–25 mg pyridoxine separately for significant nausea. Switch to tablets and reduce to 1–3 g/day during peak nausea weeks 6–12; resume normal dose in the second trimester.
Read article - Science·14 July 2026·7 min read·Members
Spirulina and osteoporosis: NF-κB osteoclasts, zinc, protein, and what it can't replace
NF-κB is required for osteoclast differentiation — phycocyanin's NF-κB inhibition directly targets bone resorption. Zinc is a cofactor for osteoblast mineralisation enzymes. Spirulina cannot replace calcium, vitamin D, or vitamin K2. Animal evidence shows preserved bone density; no human osteoporosis RCT exists.
Read article - Science·14 July 2026·7 min read·Members
Spirulina and sarcopenia: protein quality, anti-inflammatory support, and the evidence
Sarcopenia involves anabolic resistance, inflammageing, and mitochondrial dysfunction. Spirulina (PDCAAS 0.97) contributes to protein intake; phycocyanin reduces NF-κB muscle catabolism; phycocyanobilin reduces mitochondrial oxidative stress. The Hernandez-Lepe RCT showed improved lean mass and strength vs exercise alone.
Read article - Science·13 July 2026·7 min read·Members
Spirulina and obesity: adiponectin, insulin resistance, appetite, and the RCT evidence
Multiple RCTs show spirulina reduces weight (−0.5–2 kg), waist circumference, triglycerides, LDL, and fasting glucose in obese adults. Adiponectin upregulation and NADPH oxidase inhibition are the primary mechanisms. Dose-dependent effects up to 8 g/day. Adjunct to dietary change — not a primary obesity treatment.
Read article - Science·13 July 2026·7 min read·Members
Spirulina and hyperthyroidism: iodine content, Graves' disease, and antithyroid therapy
Active hyperthyroidism and untreated Graves' disease are contraindications to spirulina — iodine worsens thyrotoxicosis and immune stimulation exacerbates TRAb-driven autoimmunity. Post-treatment patients on levothyroxine follow hypothyroidism timing rules. Remission Graves' requires endocrinologist agreement.
Read article - Community·13 July 2026·6 min read
Spirulina energy drink recipes: natural alternatives to Red Bull and Monster
Commercial energy drinks provide caffeine and B vitamins while masking iron deficiency — the actual cause of chronic fatigue in many users. Four spirulina energy drink recipes: morning green shot, spirulina matcha latte, tropical electrolyte boost, and beetroot spirulina pre-workout.
Read article - Science·12 July 2026·7 min read·Members
Spirulina and stroke prevention: endothelial protection, platelet aggregation, and anticoagulation
Ischaemic stroke shares pathophysiology with coronary artery disease — NADPH oxidase endothelial dysfunction and platelet aggregation. Phycocyanobilin and GLA address both. Blood pressure reduction (~8 mmHg) is the strongest documented stroke prevention mechanism. Warfarin users require anticoagulation team discussion.
Read article - Science·12 July 2026·8 min read·Members
Spirulina for perimenopause: iron transition, hot flashes, mood, and cardiovascular risk
Perimenopause creates evolving iron needs — heavier bleeding in early perimenopause, then declining cycles requiring iron monitoring. Rising cardiovascular risk from oestrogen decline makes spirulina's LDL and triglyceride effects directly relevant. Ferritin testing annually is the key protocol difference versus reproductive years.
Read article - Science·12 July 2026·7 min read·Members
Spirulina and erectile dysfunction: nitric oxide, endothelial health, and the evidence
ED is a vascular condition in 70–80% of cases — NADPH oxidase destroys NO before it reaches penile smooth muscle. Phycocyanobilin inhibits NADPH oxidase and upregulates eNOS. ED is now recognised as an early cardiovascular marker; spirulina's cardiovascular risk factor profile is the strongest case.
Read article - Science·11 July 2026·7 min read·Members
Spirulina and female fertility: iron, oocyte antioxidants, and PCOS
Iron is required for folliculogenesis, corpus luteum function, and implantation. Target ferritin above 70–80 ng/mL before conception. Nrf2-activated antioxidants protect follicular fluid quality. PCOS patients must check ferritin first — some have elevated iron and should not supplement.
Read article - Science·11 July 2026·7 min read·Members
Spirulina and male fertility: sperm oxidative stress, zinc, and the evidence
Oxidative stress is the mechanism in 30–40% of male infertility — damaging sperm DNA fragmentation, motility, and morphology. Phycocyanobilin inhibits NADPH oxidase (the primary testicular ROS source). Zinc supports capacitation and chromatin condensation. Animal evidence strong; human trial absent.
Read article - Science·11 July 2026·7 min read·Members
Spirulina and testosterone: zinc, antioxidants, and the evidence for male hormonal health
Zinc is a direct cofactor for testosterone synthesis (StAR and 3β-HSD enzymes). Spirulina corrects zinc deficiency — the clearest nutritional cause of low testosterone. No effect in zinc-replete men. NADPH oxidase inhibition reduces testicular oxidative stress that impairs steroidogenesis.
Read article - Community·10 July 2026·6 min read
Spirulina yoghurt parfaits: four recipes from 2 g to 5 g, completely undetectable
Greek yoghurt's fat-protein matrix physically encapsulates spirulina volatiles better than most foods. Stir spirulina into yoghurt before layering — never add as a visible layer. Four tested recipes: honey berry, mango coconut, cacao banana, and kiwi chia with maximum iron absorption vitamin C.
Read article - Science·10 July 2026·7 min read·Members
Spirulina and chronic pain: central sensitisation, COX-2, and the evidence
Chronic pain involves COX-2-driven peripheral sensitisation and NF-κB central sensitisation — both targets of phycocyanin. The strongest mechanistic case is for fibromyalgia and neuropathic pain. Spirulina is a complementary anti-inflammatory, not a replacement for established pain management.
Read article - Science·10 July 2026·7 min read·Members
Spirulina and bipolar disorder: neuroinflammation, lithium interaction, and cautions
Bipolar disorder involves neuroinflammation and mitochondrial oxidative stress — both targeted by phycocyanobilin. The primary concern is lithium: spirulina's sodium content affects lithium renal clearance. Check lithium levels 4–6 weeks after starting. Discuss with your psychiatrist before beginning.
Read article - Community·9 July 2026·7 min read
Spirulina grow lights: spectrum, intensity, and photoperiod for indoor cultivation
Spirulina absorbs at 660–680 nm (chlorophyll a red), 440–470 nm (blue), and 615–620 nm (phycocyanin orange-red). Target 5,000–15,000 lux at the culture surface. Full-spectrum LED panels at 3000–4000K with 16/8 photoperiod on a timer is the practical home setup.
Read article - Science·9 July 2026·7 min read·Members
Spirulina and interstitial cystitis (IC/BPS): mast cells, NF-κB, and careful introduction
IC involves mast cell infiltration and NF-κB neurogenic inflammation — mechanisms targeted by phycocyanin. IC patients have extreme dietary sensitivity: choose pure powder with no citric acid or additives, start at 0.5–1 g/day, and escalate over 6–8 weeks. No human IC trial exists.
Read article - Science·9 July 2026·7 min read·Members
Spirulina and seasonal affective disorder (SAD): iron, tryptophan, and winter nutrition
SAD involves reduced serotonin, disrupted melatonin, and winter depletion of iron and vitamin D. Spirulina provides tryptophan (serotonin precursor), iron (dopamine synthesis cofactor), and anti-inflammatory phycocyanin — nutritional support alongside light therapy, which remains the primary intervention.
Read article - Science·8 July 2026·8 min read·Members
Spirulina and cancer prevention: NK cells, antioxidants, and the honest evidence
NK cell activation (human trial evidence), NF-κB inhibition (cell and animal evidence), reduced oxidative DNA damage (human evidence), and 45% oral leukoplakia regression (controlled trial) are the strongest prevention signals. No prospective cancer incidence trial exists. Prevention context only — not cancer treatment.
Read article - Science·8 July 2026·7 min read·Members
Spirulina and cardiac arrhythmia: potassium, magnesium, warfarin, and cautions
Potassium and magnesium from spirulina are relevant to arrhythmia management — beneficial for magnesium-depleted patients, a monitoring concern for those on ACE inhibitors or potassium-sparing diuretics. Warfarin/AF patients must inform their anticoagulation team and maintain consistent daily intake.
Read article - Science·8 July 2026·7 min read·Members
Spirulina and hypothyroidism: levothyroxine timing, iodine, and Hashimoto's
Two specific interactions: iron in spirulina reduces levothyroxine absorption (mandatory 3–4 hour gap); variable iodine content and immune stimulation require caution in Hashimoto's thyroiditis. Check TSH at 6–8 weeks after starting. Choose spirulina with declared iodine content if Hashimoto's.
Read article - Community·7 July 2026·7 min read
Spirulina smoothie bowl recipes: five tested formulas from 2 g to 6 g
Smoothie bowls mask spirulina taste better than drinks — frozen base traps volatiles, thick texture integrates flavour, toppings add complexity. Five tested recipes: açaà berry, mango green, tropical pineapple, cacao banana, and dragon fruit, from 2 g to 6 g spirulina.
Read article - Science·7 July 2026·6 min read·Members
Spirulina and kidney stones: oxalate content, uric acid, and who needs to be cautious
Calcium oxalate stone formers: spirulina is low-oxalate and unrestricted at standard doses. Uric acid stone formers: spirulina purines are relevant — limit to 3–5 g/day if serum uric acid is elevated. CKD patients: follow stage-specific nephrology guidance.
Read article - Buying·7 July 2026·7 min read
Spirulina vs whey protein: which is better for muscle, recovery, and health?
Whey delivers the leucine threshold for post-workout muscle synthesis; spirulina cannot at practical doses. But spirulina provides iron (whey has none), anti-inflammatory phycocyanobilin, and no lactose or acne-triggering IGF-1 effects. The combination covers both purposes.
Read article - Science·6 July 2026·8 min read·Members
Spirulina and IBD: Crohn's disease, ulcerative colitis, and the evidence
Phycocyanin inhibits NF-κB and TNF-α — the same targets as the most effective IBD biologics. Prebiotic polysaccharides support butyrate producers depleted in IBD dysbiosis. The dual immune-stimulating nature requires caution during active flare; remission is the appropriate context for spirulina in IBD.
Read article - Science·6 July 2026·7 min read·Members
Spirulina and coeliac disease: gluten-free status, iron repletion, and gut recovery
Spirulina is naturally gluten-free. At coeliac diagnosis, iron deficiency is present in 50–70% of patients from years of villous atrophy. Spirulina's food-matrix iron is better tolerated than ferrous sulfate in inflamed gut mucosa. Check for gluten-free certification on cross-contamination risk.
Read article - Community·6 July 2026·8 min read
Spirulina for runners: iron, foot-strike haemolysis, recovery, and endurance
Runners deplete iron through four simultaneous routes: foot-strike haemolysis, GI microbleeding, sweat losses, and menstrual losses. Phycocyanin's anti-inflammatory effect also reduces post-exercise hepcidin spikes that suppress iron absorption. Test ferritin first — 25–50% of female runners are deficient.
Read article - Science·5 July 2026·7 min read·Members
Spirulina and tinnitus: NADPH oxidase, cochlear oxidative damage, and the phycocyanin mechanism
Noise-induced and age-related cochlear hair cell damage is driven by NOX3 (NADPH oxidase 3) — the primary ROS source in the inner ear. Phycocyanobilin specifically inhibits NADPH oxidase. The mechanism is precise; human trial evidence in tinnitus patients is absent.
Read article - Community·5 July 2026·7 min read
Spirulina overnight oats: recipes that hide the taste and maximise iron absorption
Five tested overnight oat recipes from 1 g to 5 g spirulina — banana chocolate, mango tropical, strawberry vanilla, matcha, and pumpkin spice. The cold base preserves phycocyanin; fruit toppings provide vitamin C for iron absorption.
Read article - Science·5 July 2026·7 min read·Members
Spirulina after antibiotics: gut microbiome recovery and prebiotic support
Broad-spectrum antibiotics reduce microbiome diversity by 30–50% and deplete Lactobacillus and butyrate-producing bacteria for months. Spirulina's prebiotic polysaccharides selectively support the species most affected — with timing guidance for during and after a course.
Read article - Science·4 July 2026·7 min read·Members
Spirulina and chronic kidney disease: protein, potassium, phosphorus, and stage-specific guidance
CKD restricts protein (stages 3–4), potassium, phosphorus, and purines — all present in spirulina. Phycocyanin's anti-inflammatory mechanism is potentially disease-modifying. Dose must be managed by stage: standard use for stages 1–2, dietitian review for stages 3–4, nephrology team approval for stage 5.
Read article - Community·4 July 2026·6 min read
Spirulina for students: cognitive performance, iron, and exam stress
30–50% of female university students have sub-clinical iron deficiency that measurably impairs attention, working memory, and processing speed. Spirulina is one of the most practical single supplements for the iron, B vitamin, zinc, and immune gaps common in student diets.
Read article - Buying·4 July 2026·7 min read
Spirulina vs sea moss: a complete comparison
Spirulina wins on protein (PDCAAS 0.97 vs negligible), iron (8–16 mg vs ~1 mg), and clinical evidence (100+ human RCTs vs essentially none). Sea moss wins on iodine (but often dangerously high) and potassium. They address different nutritional gaps and are compatible together.
Read article - Science·3 July 2026·7 min read·Members
Spirulina and vitiligo: Hâ‚‚Oâ‚‚, catalase deficiency, and phycocyanobilin
Vitiligo melanocytes show reduced catalase — H₂O₂ accumulates and triggers oxidative melanocyte destruction. Phycocyanobilin activates Nrf2, directly upregulating catalase. This is the most mechanistically specific match for spirulina in dermatology. No human RCT; cell line and animal evidence supports the mechanism.
Read article - Science·3 July 2026·6 min read·Members
Spirulina and gallbladder: cholesterol stones, bile acids, and what the evidence shows
Cholesterol gallstones form when biliary cholesterol supersaturates bile. Spirulina's GLA reduces hepatic VLDL and cholesterol secretion into bile; triglyceride reduction reduces biliary sludge. A hamster model shows reduced gallstone incidence. No human trial exists.
Read article - Science·3 July 2026·7 min read·Members
Spirulina for postpartum recovery: iron, protein, zinc, and what it can't replace
Delivery removes 150–500 mg iron from the body; 30–50% of women have postpartum iron deficiency. Spirulina provides iron, complete protein, zinc, and B vitamins simultaneously — but cannot replace B12 (pseudocobalamin), DHA, vitamin D, or iodine. Quality requirements equal pregnancy.
Read article - Community·2 July 2026·7 min read
Water quality for spirulina cultivation: pH, salinity, hardness, and safety
Spirulina requires pH 9.5–10.5 and moderate salinity. Tap water chloramine requires active removal; hard water needs dilution; heavy metals bioaccumulate in the harvest. A practical guide to assessing, treating, and monitoring source water for home and small-scale growers.
Read article - Community·2 July 2026·6 min read
Spirulina for nurses and healthcare workers: iron, immunity, and shift work
Female nurses have sub-clinical iron deficiency in 25–40% of cases from shift-work hepcidin disruption and menstrual losses. Spirulina's iron, NK cell activation, and anti-inflammatory recovery support address the specific physiological demands of healthcare work.
Read article - Science·2 July 2026·7 min read·Members
Which type of anaemia does spirulina help? The complete guide
Iron deficiency anaemia: directly relevant. B12 deficiency anaemia: spirulina's pseudocobalamin can mask the deficiency — a clinical hazard. Anaemia of chronic disease: phycocyanin reduces hepcidin-driving IL-6. Haemolytic and aplastic anaemia: not relevant. Test before supplementing.
Read article - Science·1 July 2026·6 min read·Members
Spirulina and insomnia: tryptophan, magnesium, and knowing when nutrition isn't the answer
Chronic insomnia is primarily psychological — CBT-I, not supplements, is the treatment. Spirulina addresses nutritional sleep contributors: iron for RLS, anti-inflammatory effects on sleep architecture, and food-matrix tryptophan/magnesium. Distinguishing these from conditioned insomnia is the key clinical question.
Read article - Science·1 July 2026·7 min read·Members
Spirulina and heart failure: oxidative stress, medication interactions, and caution
Heart failure is a distinct condition from cardiovascular prevention. Phycocyanobilin's cardiac NADPH oxidase inhibition and anti-inflammatory effects are mechanistically relevant, but sodium content, potassium levels, warfarin interactions, and diuretic management require careful monitoring.
Read article - Science·1 July 2026·7 min read·Members
Spirulina and Parkinson's disease: NADPH oxidase, neuroinflammation, and the evidence
PD neurodegeneration is driven by microglial NADPH oxidase-generated superoxide — the primary target of phycocyanobilin. Multiple animal models show phycocyanin reduces dopaminergic neuron loss, preserves dopamine levels, and reduces alpha-synuclein aggregation. No human trial exists; mechanistically the most precise match in neurodegenerative disease.
Read article - Science·30 June 2026·6 min read·Members
Spirulina and Raynaud's syndrome: nitric oxide, vasodilation, and the evidence
Raynaud's involves endothelial NO insufficiency from superoxide destruction of nitric oxide. Phycocyanobilin inhibits NADPH oxidase (reducing superoxide) and upregulates eNOS — directly targeting the vascular mechanism. GLA provides PGE1 vasodilation. No dedicated trial; strong mechanistic alignment.
Read article - Science·30 June 2026·7 min read·Members
Spirulina and multiple sclerosis: neuroinflammation benefit vs immune stimulation risk
Phycocyanobilin crosses the blood-brain barrier and reduces microglial NF-κB and NADPH oxidase — directly targeting MS neuroinflammation. But spirulina's systemic NK cell and IFN-γ stimulation raises autoimmune concern. EAE animal data is promising; no human trial exists. Neurologist review required.
Read article - Community·30 June 2026·6 min read
Spirulina for office workers: screen eye strain, sedentary cardiovascular risk, and iron
Office work accumulates cardiovascular risk from prolonged sitting, causes macular blue-light stress from screens, and depletes iron through stress and poor dietary diversity. Spirulina's zeaxanthin, triglyceride reduction, and food-matrix iron address these specific vulnerabilities.
Read article - Science·29 June 2026·7 min read·Members
Spirulina and endometriosis: peritoneal inflammation, iron, and GLA
Endometriosis involves NF-κB-driven peritoneal inflammation, COX-2 overexpression, and iron-catalysed oxidative stress from retrograde menstruation. Phycocyanin targets all three. Animal models show lesion reduction. No human RCT exists — mechanistically well-matched with important NK cell nuances.
Read article - Science·29 June 2026·6 min read·Members
Spirulina and oral health: gum disease, antimicrobial effects, and the evidence
Calcium spirulan inhibits Porphyromonas gingivalis adhesion; phycocyanin reduces NF-κB in gingival fibroblasts; a controlled trial found improved plaque and gingival indices versus placebo. The Mathew 1995 trial showed 45% complete regression of oral leukoplakia at 1 g/day.
Read article - Science·29 June 2026·7 min read·Members
Spirulina and migraines: magnesium, riboflavin, and neuroinflammation
Magnesium deficiency is found in ~50% of migraine patients during attacks; riboflavin at 400 mg/day halves attack frequency in RCTs. Spirulina provides both at food-matrix levels. Phycocyanin's neuroinflammation inhibition via NF-κB and CGRP pathways adds a third mechanistic angle.
Read article - Science·28 June 2026·7 min read·Members
Spirulina and lupus (SLE): why the autoimmune caution is serious
SLE is the autoimmune condition where spirulina's immune stimulation (NK cell activation, interferon-γ upregulation, B cell activation potential) creates the most clinical concern. A case report documents a temporal association with SLE flare. Avoid without rheumatologist oversight.
Read article - Science·28 June 2026·7 min read·Members
Spirulina and type 1 diabetes: autoimmune caution and oxidative stress support
T1D is mechanistically different from T2D — autoimmune origin, absolute insulin deficiency, and specific cardiovascular risk. Spirulina's immune-stimulating effects warrant caution (especially in honeymoon phase); phycocyanobilin's NADPH oxidase inhibition directly targets T1D oxidative stress pathways.
Read article - Editorial·28 June 2026·7 min read
Spirulina dosage by health goal: the complete evidence-based reference
Iron maintenance needs 3–5 g/day; cholesterol reduction needs 4–8 g; hay fever needs 2–4.5 g; athletic performance needs 5–7.5 g. A complete dose reference table organised by health goal, with the mechanisms explaining each dose range.
Read article - Science·27 June 2026·8 min read·Members
Spirulina and fibromyalgia: mitochondrial dysfunction, oxidative stress, and fatigue
Fibromyalgia involves mitochondrial oxidative stress and glutathione depletion — the two strongest targets for phycocyanobilin's NADPH oxidase inhibition and Nrf2 activation. A small pilot trial showed fatigue reduction at 6 g/day. Peripheral anti-inflammatory effects are less relevant than in inflammatory arthritis.
Read article - Science·27 June 2026·7 min read·Members
Spirulina at high altitude: erythropoiesis, oxidative stress, and acclimatisation
Altitude acclimatisation demands more iron for EPO-driven red blood cell production and generates intense oxidative stress. Spirulina builds ferritin pre-altitude, provides phycocyanin antioxidant protection, and reduces altitude-triggered NF-κB neuroinflammation — without blunting hypoxic adaptation signals.
Read article - Science·27 June 2026·7 min read·Members
Spirulina and psoriasis: Th17 inflammation, NF-κB, and the evidence
Psoriasis is a Th17-driven inflammatory condition with NF-κB constitutively active in plaques. Phycocyanin inhibits NF-κB and TNF-α; GLA shifts eicosanoid balance; spirulina polysaccharides address gut-skin axis dysbiosis. No direct psoriasis RCT exists — mechanistically plausible, not proven.
Read article - Buying·26 June 2026·7 min read
Spirulina iron vs iron supplements: ferrous sulfate, bisglycinate, and heme iron compared
Ferrous sulfate provides 65 mg elemental iron per tablet but causes GI side effects in 30–40% of users. Spirulina at 10 g provides 8–16 mg absorbed iron (with vitamin C) with no GI issues. The right choice depends on severity: therapeutic supplements for deficiency anaemia, spirulina for maintenance and mild insufficiency.
Read article - Science·26 June 2026·7 min read·Members
Spirulina and gout: purines, uric acid, and who should be cautious
Spirulina contains purines at 50–75 mg per 5 g serving — comparable to a small portion of red meat. At standard doses the gout risk is modest. Phycocyanin's NF-κB inhibition is anti-inflammatory in the acute attack pathway. Check uric acid at baseline; limit to 3–5 g/day if hyperuricaemic.
Read article - Science·26 June 2026·8 min read·Members
Spirulina for older women: menopause, bone health, cardiovascular risk, and iron
Post-menopause, LDL rises sharply, bone resorption accelerates, and iron needs reverse. Spirulina's phycocyanin vascular effects, NF-κB bone protection, GLA anti-inflammatory action, and complete protein for sarcopenia all align with the post-50 female physiological picture.
Read article - Science·25 June 2026·8 min read·Members
Spirulina for older men: testosterone, muscle, cardiovascular, and cognitive health
Men over 50 face declining testosterone, sarcopenia, accumulating cardiovascular risk, and cognitive vulnerability. Spirulina's zinc, complete protein, phycocyanin anti-inflammatory, and cholesterol-lowering effects directly address several of these simultaneously — with specific evidence for sarcopenia benefit.
Read article - Science·25 June 2026·7 min read·Members
Spirulina as a zinc source: content, bioavailability, and immune function
Spirulina provides 1.5–2.5 mg zinc per 5 g — 14–23% of the RDA — in food-matrix form with lower phytate inhibition than legumes. Zinc from spirulina is relevant for immunity, testosterone, wound healing, and skin. Here's the complete picture including when a dedicated supplement makes more sense.
Read article - Science·25 June 2026·7 min read·Members
How much phycocyanin do you actually get from spirulina?
Phycocyanin content varies 5-fold between products — from 3% in commodity powder to 25%+ in freeze-dried premium. Clinical trials use 200–2,400 mg/day. Here's how to calculate your dose, what product type achieves it, and why stability matters more than the label number.
Read article - Community·24 June 2026·6 min read
Building a daily spirulina routine that actually sticks
Most spirulina failures are habit failures, not product failures. Habit stacking, environment design, the never-miss-twice rule, and dose escalation as habit architecture together create the conditions for long-term adherence. Format choice (tablets vs powder) matters more than most people realise.
Read article - Science·24 June 2026·8 min read·Members
Spirulina and Alzheimer's disease: neuroinflammation and the evidence
Phycocyanobilin crosses the blood-brain barrier, inhibits microglial NF-κB and NADPH oxidase (neuroinflammation), and reduces Aβ42 aggregation in vitro. Animal model evidence is consistent. No human AD trial exists yet — this is promising preclinical evidence, not proven treatment.
Read article - Science·24 June 2026·7 min read·Members
Spirulina in a sport nutrition stack: how it fits with creatine, protein, omega-3
Performance supplements (creatine, protein, beta-alanine) target acute outputs. Spirulina fills the nutritional foundation they miss — iron, B vitamins, and anti-inflammatory recovery support. A complete evidence-based athlete's supplement table with doses and roles.
Read article - Science·23 June 2026·6 min read·Members
Spirulina and muscle cramps: magnesium, electrolytes, and exercise
Magnesium deficiency lowers the cramp threshold; spirulina provides 30–40 mg/5 g (8–10% RDA). B vitamins support nerve conduction; iron addresses fatigue-driven cramp susceptibility. Spirulina is a background nutritional support — magnesium glycinate 300–400 mg/day is the primary intervention for established cramp problems.
Read article - Buying·23 June 2026·7 min read
Spirulina quality by country of origin: what the evidence shows
China produces ~70% of global spirulina at wildly variable quality. Hawaii and European producers offer reliable premium at premium prices. Country of origin is a risk proxy, not a guarantee — a batch-specific third-party CoA from an ISO 17025 lab is always the definitive quality test.
Read article - Science·23 June 2026·7 min read·Members
Spirulina and chronic fatigue: iron, mitochondria, and what the evidence shows
Fatigue has multiple causes. Spirulina addresses iron deficiency (the most treatable nutritional driver), mitochondrial oxidative stress (via phycocyanobilin and Nrf2), and B vitamin energy cofactors. Critical: spirulina contains pseudovitamin B12 that won't correct B12 deficiency — test before supplementing.
Read article - Community·22 June 2026·6 min read
Spirulina in soups and savoury dishes: how to use it without ruining the meal
Miso, tahini, hummus, dal, guacamole, and pesto are the most effective savoury spirulina vehicles. The critical rule: add after cooking to preserve phycocyanin. Recipes and ratios for six dishes with spirulina dose per serving.
Read article - Science·22 June 2026·7 min read·Members
Spirulina for hair loss: iron deficiency, telogen effluvium, and the evidence
Telogen effluvium (diffuse shedding) is commonly caused by iron deficiency. Ferritin below 30–40 ng/mL causes follicle shutdown. Spirulina addresses the iron-protein foundation. No spirulina-specific hair loss RCT exists, but the iron-repletion mechanism is well established.
Read article - Science·22 June 2026·7 min read·Members
Spirulina allergies and reactions: what's an allergy vs detox myth
Most early spirulina reactions are GI adaptation from the prebiotic load — not allergy and not 'detox.' True IgE-mediated allergy is rare but documented, with shellfish cross-reactivity as the main risk factor. A clear table distinguishes adaptation symptoms from genuine allergic reactions.
Read article - Science·21 June 2026·7 min read·Members
Spirulina for children's growth: iron, protein, and what the studies show
Multiple trials in malnourished children show spirulina improves haemoglobin, weight gain, and growth velocity. Quality requirements are higher for children (third-party heavy metals and microcystin testing). Practical doses: 0.5 g at 1–3 years, 1–2 g at 4–8 years, scaling to adult doses by adolescence.
Read article - Community·21 June 2026·7 min read
Baking with spirulina: recipes, temperature limits, and what survives the oven
Baking destroys phycocyanin (degrades above 60°C) but protein, iron, beta-carotene, and most B vitamins survive. Banana muffins, chocolate brownies, crackers, and swirl bread recipes — all tested for taste masking and visual effect. For phycocyanin, use no-bake formats instead.
Read article - Science·21 June 2026·7 min read·Members
Spirulina and skin ageing: antioxidants, collagen, and UV protection
Beta-carotene accumulates in skin and reduces UV-induced erythema; phycocyanin inhibits NF-κB-driven MMP expression (collagen degradation); Nrf2 activation upregulates SOD and glutathione. No dedicated skin ageing RCT exists for spirulina, but the mechanistic case is coherent. Collagen peptides remain the primary dietary evidence for structural skin support.
Read article - Science·20 June 2026·7 min read·Members
Spirulina for gut dysbiosis: prebiotics, butyrate, and microbiome modulation
Spirulina polysaccharides selectively feed Lactobacillus and butyrate-producing bacteria; calcium spirulan and phycocyanin suppress pathogenic adhesion and biofilm. This prebiotic-antimicrobial combination is unique. Evidence is preclinical-heavy but mechanistically coherent.
Read article - Science·20 June 2026·6 min read·Members
Spirulina protein: digestibility, PDCAAS, DIAAS, and the protease myth
PDCAAS ~0.97 puts spirulina protein at the top of plant protein quality alongside soy. No cellulose cell wall means 85–95% digestibility — higher than legumes. The myth of poor spirulina protein absorption is based on outdated intact-cell measurements, not commercial dried powder.
Read article - Science·20 June 2026·6 min read·Members
Can you take too much spirulina? Toxicity, maximum doses, and safety ceiling
No established upper intake limit exists for food-grade spirulina in healthy adults. The real constraints are condition-specific: PKU (absolute contraindication), autoimmune conditions (immune stimulation concern), warfarin (vitamin K1 interaction), and CKD (protein/potassium load). Contaminated products are the primary safety risk at any dose.
Read article - Editorial·19 June 2026·7 min read
How spirulina is made: from cultivation to powder
Open raceway ponds (low cost, contamination risk) vs closed photobioreactors (higher quality, higher cost). Spray drying destroys 20–60% of phycocyanin; freeze drying preserves it fully. CoA testing at the end of the chain is the only reliable quality signal.
Read article - Science·19 June 2026·7 min read·Members
Spirulina for menstrual pain: GLA, prostaglandins, and the evidence
Primary dysmenorrhea is a prostaglandin excess condition. GLA generates anti-inflammatory PGE1 that competes with uterine-contracting PGF2α. Phycocyanin inhibits COX-2. Spirulina provides GLA at ~10% of evening primrose oil dose — a supportive but not primary intervention.
Read article - Science·19 June 2026·8 min read·Members
Spirulina and metabolic syndrome: the multi-target evidence
Metabolic syndrome requires three of five criteria: abdominal obesity, high triglycerides, low HDL, elevated blood pressure, high fasting glucose. Spirulina has replicated RCT evidence for four of these five through GLA, phycocyanobilin, ACE-inhibitory peptides, and NF-κB inhibition.
Read article - Editorial·18 June 2026·5 min read
Spirulina: with food or on an empty stomach?
Iron absorption: avoid dairy and coffee, take with vitamin C. GI comfort: with food is better for new starters. Phycocyanin: food timing is largely irrelevant. Levothyroxine users: mandatory 3–4 hour gap. The single biggest mistake is taking spirulina in coffee.
Read article - Science·18 June 2026·7 min read·Members
Spirulina for exercise recovery and DOMS: the anti-inflammatory evidence
DOMS is caused by eccentric exercise-induced COX-2/NF-κB inflammation. An RCT (Kalafati et al.) at 6 g/day for 4 weeks showed reduced TBARS, higher post-exercise glutathione, and +3.5% time-to-exhaustion in cyclists. Phycocyanobilin's NADPH oxidase inhibition is mechanistically distinct from adaptation-blunting high-dose antioxidants.
Read article - Science·18 June 2026·7 min read·Members
Spirulina and homocysteine: B vitamins, cardiovascular risk, and cognitive health
Elevated homocysteine is an independent cardiovascular and dementia risk factor requiring B12, folate, B6, and riboflavin to resolve. Spirulina provides B6 and riboflavin — two of the four cofactors — but not B12 or folate in meaningful amounts. It complements but does not replace therapeutic B supplementation.
Read article - Science·17 June 2026·7 min read·Members
Spirulina for stress and cortisol: magnesium, tryptophan, and HPA axis support
Spirulina is not an adaptogen — it doesn't lower cortisol directly. It addresses stress-driven nutritional depletions: magnesium, B5, B6, and antioxidant capacity. The stress-fatigue overlap with iron deficiency is a key practical point. Ashwagandha handles HPA modulation; spirulina handles the nutritional foundation.
Read article - Science·17 June 2026·7 min read·Members
Spirulina for vegetarians: the nutritional gaps it fills (and doesn't)
Vegetarians share iron, zinc, and omega-3 gaps with vegans but have lower B12 and calcium risk from dairy and eggs. Spirulina specifically addresses the iron and zinc shortfalls — with B12 less urgent than for vegans. Algal DHA remains the critical unmet gap.
Read article - Science·17 June 2026·8 min read·Members
Spirulina and cardiovascular disease prevention: the complete evidence
20+ RCTs show spirulina reduces LDL (−10 mg/dL), triglycerides (−44 mg/dL), and blood pressure (−8 mmHg systolic) while raising HDL and reducing CRP. No single supplement has replicated evidence across four independent cardiovascular risk factors simultaneously.
Read article - Science·16 June 2026·7 min read·Members
Spirulina and joint health: arthritis, inflammation, and the evidence
Phycocyanin inhibits COX-2 and NF-κB — the same pathways as NSAIDs. Animal studies show potent anti-inflammatory effects; direct human joint RCTs are limited. For RA, consult a rheumatologist first due to spirulina's immune-stimulating properties.
Read article - Community·16 June 2026·7 min read
Spirulina energy balls: recipes that hide the taste completely
Five tested energy ball recipes using dates, peanut butter, cacao, and coconut. The fat and sugar matrix physically encapsulates volatile sulphur compounds — 2 g spirulina per ball with no spirulina taste. From simple 5-ingredient to nutritionally-dense superfood versions.
Read article - Science·16 June 2026·8 min read·Members
Spirulina and thyroid health: iodine, Hashimoto's, and medication timing
Spirulina's iodine content is variable and uncontrolled — a concern for Hashimoto's and hyperthyroid patients. Immune stimulation may exacerbate autoimmune thyroid disease. Levothyroxine absorption is reduced by spirulina iron: maintain a 3–4 hour gap and check TSH 6–8 weeks after starting.
Read article - Editorial·15 June 2026·6 min read
Spirulina dose escalation guide: starting low and building up
Most people who quit spirulina in the first two weeks started at 3–5 g immediately. A four-week escalation — 0.5 g, 1 g, 2 g, 3 g — prevents GI issues, allows taste adaptation through receptor downregulation, and dramatically improves long-term adherence.
Read article - Science·15 June 2026·8 min read·Members
Spirulina and iron for endurance athletes: the specific case
Female endurance athletes lose iron from four simultaneous routes: foot-strike haemolysis, GI microbleeding, sweat losses, and menstrual losses. Phycocyanin's anti-inflammatory effect on hepcidin adds a second mechanism beyond iron content. Take with vitamin C, away from post-training windows.
Read article - Science·15 June 2026·7 min read·Members
Spirulina and rosacea: inflammation, Th2 modulation, and gut-skin axis
Rosacea is a vascular inflammatory condition with TLR2 dysregulation, mast cell involvement, and gut-skin axis associations. Phycocyanin's NF-κB inhibition, GLA's PGE1 pathway, and prebiotic gut modulation address several upstream mechanisms — no direct RCT evidence but plausible mechanistic relevance.
Read article - Editorial·14 June 2026·6 min read
Why spirulina tastes the way it does: the science of the flavour
Dimethyl sulphide, phycobiliprotein degradation products, and lipid oxidation aldehydes create the marine/fishy taste. Frozen banana works because amyl acetate and starch gel physically encapsulate these volatiles. Taste adaptation at 4–8 weeks is receptor downregulation, not placebo.
Read article - Science·14 June 2026·7 min read·Members
Spirulina and PCOS: insulin resistance, inflammation, and iron
PCOS is primarily insulin resistance and chronic inflammation. Phycocyanobilin inhibits NADPH oxidase (insulin sensitisation); phycocyanin reduces NF-κB/TNF-α (anti-inflammatory). Check ferritin first — some PCOS patients have elevated iron and should not supplement.
Read article - Buying·14 June 2026·7 min read
Spirulina vs multivitamins: which is better for nutritional coverage?
Multivitamins cover more gaps (B12, D, C, iodine — which spirulina misses). Spirulina provides fewer nutrients but as a whole-food matrix plus phycocyanin, which no multivitamin contains. The practical answer: take a simple multivitamin and spirulina together.
Read article - Community·13 June 2026·7 min read
Spirulina growing: how to maximise yield and quality
Light, temperature, bicarbonate supply, nutrients, and harvest frequency are the five yield variables. Optimal: 30–36°C, pH 9.5–10.5, harvest at 2–3 g/L. CO₂ injection is the single biggest yield improvement for indoor setups.
Read article - Science·13 June 2026·6 min read·Members
Spirulina and statins: combining cholesterol treatments safely
Spirulina and statins lower cholesterol through different mechanisms — HMG-CoA reductase inhibition vs VLDL synthesis reduction and LDL oxidation protection. The combination is safe and additive; spirulina also adds triglyceride reduction that statins provide only modestly.
Read article - Community·13 June 2026·6 min read
Spirulina in Indian cuisine: dal, lassi, and dishes that work naturally
Masoor dal with tomato, mango lassi, palak paneer, and spiced chaas are the most effective integration vehicles. Turmeric and phycocyanin combine for additive NF-κB inhibition — flavour compatibility and nutritional synergy together.
Read article - Science·12 June 2026·6 min read·Members
Spirulina and medication timing: spacing and interactions
Key interactions: take spirulina 3–4 hours after levothyroxine; inform anticoagulation team before starting if on warfarin; monitor blood glucose with diabetes medications; avoid with immunosuppressants without specialist input.
Read article - Science·12 June 2026·6 min read·Members
Spirulina and eczema: the anti-inflammatory case and what the evidence shows
Phycocyanin modulates Th2 cytokines (IL-4, IL-5, IL-13) relevant to atopic inflammation. GLA shifts eicosanoid balance. Gut microbiome support addresses the gut-skin axis. No dedicated eczema RCT, but consistent mechanistic and animal evidence.
Read article - Science·12 June 2026·7 min read·Members
Spirulina and fatty liver (MASLD/NAFLD): what the evidence shows
Two human RCTs show spirulina reduces ALT, AST, and ultrasound-assessed steatosis in NAFLD patients. GLA reduces hepatic VLDL synthesis; phycocyanin inhibits hepatic NF-κB; Nrf2 activation reduces oxidative stress. Practical adjunct, not a primary treatment.
Read article - Community·11 June 2026·7 min read
Spirulina culture contamination: identification, causes, and recovery
Rotifers, green algae, and other cyanobacteria are the main threats. Rotifers die above pH 10; green algae require culture restart. Other cyanobacteria are a safety risk — microcystin testing is essential if contamination is suspected in home-grown product.
Read article - Buying·11 June 2026·7 min read
Spirulina vs ashwagandha: what each one does and when to use both
Spirulina fills nutritional gaps (iron, B vitamins, antioxidants). Ashwagandha modulates the HPA axis (cortisol, sleep, testosterone). They address different causes of fatigue and stress — the combination covers both nutritional and adaptogenic needs.
Read article - Science·11 June 2026·6 min read·Members
Spirulina and long COVID: antioxidant support for post-viral recovery
Long COVID features persistent NF-κB inflammation, mitochondrial ROS elevation, iron dysregulation, and B-vitamin depletion — all areas where spirulina's documented mechanisms are relevant. No direct RCT evidence; the case is mechanistic with community observation support.
Read article - Science·10 June 2026·7 min read·Members
Spirulina and IBS, Crohn's, and IBD: what to know before starting
Phycocyanin reduces intestinal NF-κB/COX-2 inflammation; polysaccharides strengthen tight junctions and boost butyrate production. Animal colitis data is consistent. Start at 0.5 g/day and escalate slowly — prebiotic fermentation can worsen symptoms initially.
Read article - Editorial·10 June 2026·6 min read
Spirulina and the keto diet: compatibility, carb count, and benefits
Under 1 g net carbs per 5 g serving — completely keto-compatible. Addresses specific keto nutritional gaps: B vitamins (thiamine for fatty acid oxidation, riboflavin for FAD), phytonutrients excluded by keto food restrictions, and prebiotic support.
Read article - Science·10 June 2026·8 min read·Members
Spirulina for women: iron, hormones, menopause, and pregnancy
Women need 18 mg/day iron vs 8 mg/day for men. Spirulina addresses iron, cycle symptoms (GLA), pregnancy nutrition (with quality caveats), breastfeeding recovery, and postmenopausal lipid/inflammation management across life stages.
Read article - Community·9 June 2026·5 min read
Spirulina after blood donation: recovery, iron, and timing
A standard donation removes 200–250 mg iron; ferritin takes 8–16 weeks to restore. Spirulina is practical food-source iron support for regular donors, especially women — though severe depletion warrants therapeutic iron, not spirulina alone.
Read article - Science·9 June 2026·6 min read·Members
Spirulina and ADHD: the iron-dopamine connection and what the evidence shows
Iron deficiency is significantly more prevalent in ADHD and directly impairs dopamine synthesis via tyrosine hydroxylase. Iron supplementation improved ADHD scores in iron-deficient children in one RCT. Spirulina is not an ADHD treatment but addresses the iron-dopamine pathway.
Read article - Buying·9 June 2026·7 min read
Spirulina vs collagen supplements: what each one does and when to take both
Collagen (PDCAAS ~0) targets joints and skin structure; spirulina (PDCAAS 0.97) provides complete protein, iron, and systemic anti-inflammatory support. They work through different mechanisms — most people with joint or skin goals benefit from taking both.
Read article - Community·8 June 2026·7 min read
Spirulina growing medium: Zarrouk formula and practical alternatives
The Zarrouk medium provides sodium bicarbonate (carbon + pH buffer), nitrate (nitrogen), phosphate, and trace minerals. Simplified home versions reduce to 5–6 ingredients. Daily pH monitoring and bicarbonate topping is the key maintenance task.
Read article - Community·8 June 2026·6 min read
Spirulina for shift workers: fatigue, iron, and circadian disruption
Shift work elevates chronic inflammation, depletes iron (via hepcidin upregulation), and disrupts sleep. Spirulina's iron content, phycocyanin anti-inflammatory effects, and tryptophan-melatonin pathway address these specific vulnerabilities.
Read article - Science·8 June 2026·6 min read·Members
Spirulina as a natural food colouring: phycocyanin, EU regulation, and applications
Phycocyanin from spirulina is the only natural blue food colouring in wide commercial use and EU-approved (E3). Heat-unstable above 60°C and pH-sensitive below 4 — applications limited to confectionery, frozen desserts, and cold products.
Read article - Community·7 June 2026·7 min read
Spirulina harvesting guide: when to harvest, filtering, and drying
Harvest at 2–4 g/L density. Filter through 75–100 micron mesh. Dry below 45°C to preserve phycocyanin — food dehydrators are the practical home method. Colour after drying is your quality check.
Read article - Science·7 June 2026·6 min read·Members
Spirulina and anxiety: the mechanisms, the evidence, and realistic expectations
GABA precursors (glutamic acid, B6), magnesium's GABA-receptor modulation, phycocyanin's neuroinflammation reduction, and iron repletion effects all provide plausible anxiety-reduction pathways. Direct human trials are absent — but the community evidence is consistent.
Read article - Buying·7 June 2026·8 min read
Spirulina vs moringa: a complete comparison
Spirulina wins on protein quality, iron density, phycocyanin bioactives, and clinical evidence. Moringa wins on vitamin C, calcium, palatability, and easy integration into food. Their profiles are complementary rather than competitive.
Read article - Buying·6 June 2026·5 min read
Spirulina colour as a quality signal: what the shade tells you
Deep blue-green means phycocyanin is intact. Olive or brownish indicates heat damage or age. Colour is a useful rapid screen but doesn't replace a CoA — vibrant colour and clean heavy metal results are both required.
Read article - Science·6 June 2026·6 min read·Members
Spirulina and bone health: calcium, magnesium, and what the evidence shows
Spirulina contributes calcium, magnesium, phosphorus, and vitamin K1 — real bone-relevant nutrients but not primary sources. Direct clinical evidence for bone density is limited. Most relevant for vegans, postmenopausal women, and older adults.
Read article - Buying·6 June 2026·6 min read
How to read a spirulina Certificate of Analysis (CoA)
Heavy metals (Pb <1 ppm, As <1 ppm, Hg <0.1 ppm, Cd <0.5 ppm), microcystins (<1 µg/g), microbiological testing, and protein (55–70%) are the five sections that matter. Here's how to read each one and what numbers are acceptable.
Read article - Science·5 June 2026·7 min read·Members
Spirulina and urban air pollution: antioxidant protection for city living
PM2.5, ozone, and NOₓ generate chronic oxidative stress by depleting GSH and upregulating NF-κB. Phycocyanin directly scavenges superoxide and inhibits NF-κB; phycocyanobilin activates Nrf2 to boost the body's own antioxidant defences.
Read article - Buying·5 June 2026·6 min read
Spirulina quality certifications: which ones actually matter
Informed Sport and NSF Certified for Sport test every batch for prohibited substances. Organic verifies production inputs. GMP and ISO 9001 audit processes, not product. Here's what each certification means and which ones are decision-relevant.
Read article - Science·5 June 2026·8 min read·Members
Spirulina for vegans: complete nutrition gaps guide
Spirulina fills iron, zinc, riboflavin, and protein quality gaps reliably. It does not provide B12, DHA, or meaningful calcium. Here's how to build a complete vegan nutrition plan around spirulina — and what must still be supplemented separately.
Read article - Community·4 June 2026·6 min read
Spirulina in Turkish cuisine: traditional dishes and how they work together
Turkish cuisine's bold spices, yoghurt base, and legume staples integrate spirulina naturally. Tahin-pekmez and cacık are the most effective maskers. Practical guide covering breakfast, çorba, meze, ayran, and Ramazan-specific notes.
Read article - Science·4 June 2026·6 min read·Members
Long-term spirulina use: safety and what changes over months and years
The longest controlled trial is 12 months — no adverse effects. Chad communities have eaten it for generations. Benefits don't fade and tolerance doesn't develop. Annual thyroid and liver monitoring is prudent at higher doses.
Read article - Science·4 June 2026·6 min read·Members
Maximising iron absorption from spirulina: timing, vitamin C, and what to avoid
Vitamin C can 2–3× non-haem iron absorption. Calcium reduces it by 30–50%. Tannins from tea/coffee reduce it 60–70%. Taking spirulina with orange juice and away from tea/coffee makes a large practical difference for iron-deficient users.
Read article - Community·3 June 2026·8 min read
Starting a small spirulina farm: what you actually need to know
Viable only at premium pricing — commodity competition from Asia is impossible at small scale. 50–100 m² minimum for commercial viability. Six to twelve months technical learning before production. Direct sales and education revenue are what makes small farms work.
Read article - Science·3 June 2026·6 min read·Members
Spirulina as a nootropic: brain health, focus, and the evidence
Iron repletion is the strongest cognitive mechanism — iron deficiency impairs memory and attention, spirulina addresses it. Phycocyanin crosses the blood-brain barrier and reduces neuroinflammation in animal models. Not an acute stimulant.
Read article - Science·3 June 2026·7 min read·Members
Spirulina and cancer research: what the evidence shows and what it doesn't
Laboratory and animal data show anti-tumour activity for phycocyanin. The Mathew et al. (1995) oral leukoplakia trial is the most important human finding — 45% complete regression. Honest framing: promising early evidence, not a cancer supplement.
Read article - Science·2 June 2026·7 min read·Members
Spirulina for competitive athletes: high-performance dosing and timing
Performance trials use 5–7.5 g/day. Periodised dosing (3 g base, 7.5 g pre-competition) applies sports nutrition principles. Iron and antioxidant effects are the primary mechanisms. WADA clean, batch testing recommended for elite competition.
Read article - Editorial·2 June 2026·8 min read
Spirulina FAQ: the most common questions answered honestly
25 of the most-asked spirulina questions answered directly: safety, dosing, B12 myth, heavy metals, cooking, pregnancy, medication interactions, country of origin, phycocyanin content, and more — with links to full evidence.
Read article - Science·2 June 2026·6 min read·Members
Spirulina and triglycerides: what the evidence shows for hypertriglyceridaemia
15–17% triglyceride reduction across multiple RCTs — one of spirulina's most consistent lipid effects. GLA reduces hepatic VLDL synthesis, phycocyanin increases fatty acid oxidation. Effect appears at 1 g/day and strengthens through 12 weeks.
Read article - Science·1 June 2026·7 min read·Members
Spirulina and autoimmune conditions: the immune stimulation concern
Spirulina's NK cell activation and cytokine upregulation are benefits in healthy people but require caution in RA, SLE, MS, and Hashimoto's. Condition-specific guidance: IBD may be lower risk, active SLE warrants most caution.
Read article - Science·1 June 2026·6 min read·Members
Spirulina and muscle mass: the sarcopenia case for older adults
Sarcopenia is driven by protein insufficiency, inflammaging, and oxidative stress. Spirulina addresses all three but is not a standalone intervention — it works best alongside protein-adequate diet and resistance exercise.
Read article - Editorial·1 June 2026·6 min read
Spirulina's carbon footprint: the environmental case for algae protein
Spirulina produces 10–20 tonnes of protein per hectare vs 0.6 for soy, uses far less water than animal protein, and has a lifecycle carbon footprint of 2–4 kg CO₂e per kg protein — comparable to or better than soy, far below animal protein.
Read article - Science·31 May 2026·7 min read·Members
Spirulina in a type 2 diabetes diet: what the trials show and how to integrate it
Multiple RCTs show spirulina reduces fasting glucose, HOMA-IR, and HbA1c in type 2 diabetes populations. The mechanisms involve phycocyanobilin's NADPH oxidase inhibition and anti-inflammatory insulin sensitisation. Dose: 2–5 g/day for 8–12 weeks.
Read article - Buying·31 May 2026·5 min read
Spirulina phycocyanin content: what's typical, what's premium, and how to verify
Phycocyanin varies from 5% in commodity spirulina to 25%+ in premium products. Here's what the percentages mean, how to read PC declarations on labels and CoAs, and why undeclared phycocyanin content is a quality red flag.
Read article - Buying·31 May 2026·6 min read
Spirulina and microcystins: the contamination risk most buyers don't know about
Microcystins are hepatotoxic compounds from contaminating cyanobacteria that can grow in open-pond spirulina. Products from producers without testing data are the primary risk. Here's how to verify your product is clean.
Read article - Science·30 May 2026·6 min read·Members
Spirulina and the gut microbiome: prebiotic effects and what the research shows
Spirulina polysaccharides preferentially feed Lactobacillus and Bifidobacterium, producing short-chain fatty acids that support intestinal barrier function. The prebiotic mechanism is established; human trial evidence is early but consistent.
Read article - Science·30 May 2026·6 min read·Members
Spirulina while breastfeeding: safety evidence and quality requirements
Safety evidence is limited but broadly positive. Iron for postpartum repletion is the strongest case. Quality bar equals pregnancy — batch-specific CoA for heavy metals and microcystins is non-negotiable. Does not replace DHA or B12 supplementation.
Read article - Science·30 May 2026·6 min read·Members
Spirulina and nitric oxide: the exercise performance pathway
Phycocyanin may upregulate eNOS and protects NO from ROS destruction. L-arginine in spirulina provides substrate. Exercise trials show improved VOâ‚‚ max and time-to-exhaustion consistent with NO-mediated effects, though direct NO measurement in humans is absent.
Read article - Buying·29 May 2026·6 min read
Spirulina vs protein powders: whey, pea, hemp, and rice compared
Spirulina is 60% protein but a 3–5 g serving provides 2–3 g total protein — not a post-workout bolus. Its PDCAAS rivals pea protein. The real case is micronutrient density (iron, phycocyanin, zeaxanthin) that protein isolates lack.
Read article - Community·29 May 2026·6 min read
Spirulina for teenagers: safety, iron needs, and appropriate use
Safe at appropriate doses with the same quality caveats as adult use. Strongest case for iron in teenage girls and protein for plant-based athletes. Capsules or tablets often easier than powder for compliance.
Read article - Editorial·29 May 2026·6 min read
The spirulina smoothie guide: combinations that work, ratios, and recipes
Banana is the single most effective masker. Chocolate and peanut butter handle 3 g reliably. Cucumber amplifies the spirulina note. Here are the community-tested combinations with ratios and beginner-to-advanced escalation.
Read article - Editorial·28 May 2026·6 min read
Spirulina detox myths: what's false, what's exaggerated, and what's true
Heavy metal chelation, liver cleansing, body alkalising, intestinal toxin removal — specific myths, specific rebuttals. Spirulina's real benefits don't need detox framing and brands that lean on it tend to be the ones avoiding CoA transparency.
Read article - Buying·28 May 2026·6 min read
Spirulina vs wheatgrass vs barley grass vs matcha: the green supplement comparison
Four popular green supplements with very different profiles: spirulina wins on protein and iron, matcha on cognitive performance, barley grass on chlorophyll and taste ease. Here's when each makes sense.
Read article - Science·28 May 2026·7 min read·Members
Spirulina for menstrual health: iron, PMS, and the evidence
Women of reproductive age lose 15–40 mg iron per cycle. Spirulina is one of the richest plant iron sources with clinical trial support. The GLA and anti-inflammatory case for PMS and dysmenorrhoea is plausible, though direct RCT evidence is lacking.
Read article - Community·27 May 2026·5 min read
Taking spirulina when travelling: formats, customs, and staying consistent
Tablets are the best travel format. Original packaging clears customs cleanly. Store away from heat and moisture. Pre-load a weekly organiser. And if buying spirulina abroad, the same CoA verification applies wherever you are.
Read article - Editorial·27 May 2026·5 min read
Cooking with spirulina: what heat does to nutrients and phycocyanin
Phycocyanin degrades above 60–70°C. Protein, iron, and most minerals are heat-stable. Add spirulina to cool dishes for maximum phycocyanin retention, or use in baking/soups where the protein and mineral contribution still makes sense.
Read article - Science·27 May 2026·6 min read·Members
Spirulina and acne: the anti-inflammatory case and what the evidence shows
Phycocyanin inhibits NF-κB and COX-2, zinc reduces C. acnes activity, GLA modulates eicosanoid inflammation, beta-carotene supports keratinocyte regulation. The direct RCT evidence for acne is sparse, but the mechanisms are established.
Read article - Science·26 May 2026·6 min read
Spirulina and sleep: tryptophan, magnesium, and what the evidence shows
Spirulina contains tryptophan (the melatonin precursor), magnesium (needed for GABA function), and reduces inflammation — three pathways relevant to sleep. The direct trial evidence is absent, but the mechanisms are real.
Read article - Editorial·26 May 2026·5 min read
When to take spirulina: timing, meals, and splitting your dose
Take spirulina with food for better carotenoid absorption and digestive comfort. Morning and evening both work. For iron: pair with vitamin C, away from calcium. For high doses: split across two meals.
Read article - Buying·26 May 2026·6 min read
Where spirulina is produced: country of origin and what it means for quality
China and India produce the majority of global spirulina. France, the US, Japan, and Turkey produce smaller premium volumes. Country of origin is a useful heuristic — but a CoA from an accredited lab tells you more.
Read article - Editorial·25 May 2026·7 min read
Your first month on spirulina: what to expect week by week
Week 1 is adjustment (green stools, possible digestive changes), weeks 2–4 are stabilisation. Most objective benefits require 8–12 weeks at target dose. A realistic week-by-week guide to your first month.
Read article - Science·25 May 2026·6 min read
Spirulina and eye health: zeaxanthin, beta-carotene, and AMD
Spirulina is one of the richest dietary sources of zeaxanthin — a carotenoid concentrated in the macula with strong evidence for AMD prevention. Here's how it compares to dedicated eye supplements.
Read article - Science·25 May 2026·7 min read
Spirulina and thyroid function: iodine, autoimmunity, and what to know
Two real concerns: spirulina's iodine content and its immune-stimulating effects in autoimmune thyroid disease (Hashimoto's, Graves'). Here's the evidence and practical guidance for each scenario.
Read article - Science·24 May 2026·6 min read·Members
Spirulina and mood: tryptophan, inflammation, and the early evidence
The mood-lift many users report has plausible biological explanations — tryptophan, anti-inflammatory phycocyanin, B vitamins, and iron repletion. Here's what the early evidence shows and what it doesn't.
Read article - Community·24 May 2026·7 min read
Spirulina history and origins: Aztecs, Chad, and the 1970s rediscovery
Spirulina was eaten by the Aztecs at Lake Texcoco and by communities around Lake Chad for centuries before science caught up. Here's the full history — from tecuitlatl to NASA to the global supplement market.
Read article - Science·24 May 2026·6 min read
Spirulina and kidney health: who should be cautious
For healthy adults spirulina poses no kidney risk. But CKD patients, people with gout, and those on low-purine diets need to understand the specific reasons for caution — purines, potassium, protein load, and phenylalanine.
Read article - Buying·23 May 2026·5 min read
Spirulina capsules vs tablets vs powder: the complete comparison
Capsules are the third spirulina form alongside powder and tablets. No binders required, can be opened for cooking, available in vegan HPMC shells. Here's how they compare and who they're best suited for.
Read article - Science·23 May 2026·7 min read
Spirulina and heavy metals: contamination risk and how to manage it
Lead, arsenic, cadmium — the contamination comes from the water and substrate, not spirulina itself. Here's the acceptable levels for each metal, how contamination occurs, and why the detox myth is backward.
Read article - Buying·23 May 2026·6 min read
Spirulina regulatory status worldwide: GRAS, Novel Food, and what it means
GRAS in the US, traditional food in the EU, FFC in Japan. Spirulina is classified differently across markets. Here's what these regulatory frameworks actually mean for health claims, testing requirements, and product quality.
Read article - Science·22 May 2026·6 min read·Members
Spirulina in pregnancy: the myths vs the actual evidence
Three myths about spirulina in pregnancy: it's dangerous (wrong direction — contamination is the risk, not spirulina), it provides B12 (false), it provides DHA (false). Here's the evidence-grounded answer to each.
Read article - Editorial·22 May 2026·5 min read
Spirulina and intermittent fasting: does it break a fast?
Spirulina contains 15–20 kcal and 1.6 g protein per 3 g dose — technically it breaks a strict fast. Whether that matters depends on your fasting goal. Here's the practical guide for different fasting approaches.
Read article - Buying·21 May 2026·6 min read
Spirulina cost per gram: is it worth the money?
Spirulina ranges from €0.03 to €0.60 per gram. Here's what you're actually buying at each price tier, a cost comparison to other protein and iron sources, and how to find the best value for your specific goals.
Read article - Science·21 May 2026·7 min read
Spirulina and inflammation: mechanisms, evidence, and practical application
Phycocyanin inhibits COX-2 and 5-LOX through a specific oxidative mechanism, and modulates NF-κB signalling. Here's the full anti-inflammatory picture — what it means clinically and for whom it is most relevant.
Read article - Community·20 May 2026·9 min read
A practical guide to growing spirulina at home: equipment, setup, and common mistakes
More detailed than the beginner's overview — this is for committed home growers who want the specifics: water chemistry targets, lighting requirements, harvest technique, drying methods, and the failure modes to avoid.
Read article - Science·20 May 2026·7 min read·Members
Spirulina for runners and cyclists: the endurance athlete's guide
The Kalafati 2010 trial showed +11% time to exhaustion and +8.7% VOâ‚‚max in trained cyclists at 6 g/day. Here's the full protocol, the iron angle for runners, and what spirulina doesn't do for performance.
Read article - Editorial·19 May 2026·8 min read
The complete beginner's guide to spirulina
Everything you need to start: what spirulina is, what the evidence supports, how to choose a product, dose progression, and how to actually take it without hating it. The single-page introduction to spirulina.guru.
Read article - Science·19 May 2026·6 min read
Spirulina for energy: what's real and what's marketing
Spirulina is not a stimulant and adds negligible calories. The real energy connection is through iron deficiency correction. Here's an honest breakdown of what spirulina does and doesn't do for fatigue and energy.
Read article - Science·18 May 2026·6 min read·Members
Spirulina and cognitive health: the emerging evidence
Animal models consistently show spirulina reduces neuroinflammation and amyloid accumulation. No human trials exist yet. Here's the honest state of the neuroprotective research — and where the iron-cognition connection is more grounded.
Read article - Community·18 May 2026·6 min read
Spirulina for pets (dogs and cats): what pet owners need to know
Spirulina is widely given to dogs and appears in commercial pet food. The evidence is mostly extrapolated from other animals and human mechanisms. Here's the dose guidance, safety considerations, and quality standards.
Read article - Science·17 May 2026·5 min read
Spirulina and blood pressure: what the evidence shows
One RCT (Ku et al. 2013, n=40) showed spirulina at 4.5 g/day reduced systolic blood pressure by ~8 mmHg in stage 1 hypertension. The mechanism is endothelial oxidative stress reduction. Limited but real evidence.
Read article - Science·17 May 2026·6 min read·Members
The spirulina B12 myth: why it doesn't work and what to take instead
Spirulina contains pseudocobalamin, not active B12. It shows up positive on standard blood tests, may block real B12 absorption, and does not prevent deficiency. The full biochemistry and what vegans should actually do.
Read article - Science·17 May 2026·7 min read·Members
Spirulina and menopause: the evidence for perimenopausal and postmenopausal women
Post-menopause, LDL rises, antioxidant capacity declines, and inflammation increases. Several of spirulina's best-supported benefits address these changes directly. Here's the specific evidence for menopausal health.
Read article - Editorial·16 May 2026·5 min read
Spirulina expiration and shelf life: what the best-before date actually means
Phycocyanin degrades; protein doesn't. The best-before date assumes ideal storage — which rarely happens. Here's what actually changes in spirulina over time, and how to tell when it's past it.
Read article - Editorial·16 May 2026·6 min read
How to evaluate spirulina health claims: a practical guide
Spirulina marketing is full of overclaiming. This guide gives you a practical framework — the evidence hierarchy, the red flags, and how to find the actual research behind any claim.
Read article - Science·16 May 2026·5 min read·Members
Spirulina and hair growth: what the evidence actually says
Spirulina is widely claimed to support hair growth. The direct clinical evidence is essentially absent — but the indirect case through iron deficiency correction is real. Here's the honest assessment.
Read article - Science·15 May 2026·6 min read·Members
Spirulina protein quality: PDCAAS, digestibility, and the real numbers
Spirulina is 55–70% protein and marketed as a complete protein source. Here are the PDCAAS scores, digestibility data, essential amino acid profile, and what it all means for different users.
Read article - Editorial·15 May 2026·6 min read
How to make spirulina taste better: the complete guide
The taste is the number one reason people give up on spirulina. After 19 years of community experience with this exact question, here's what actually works — from banana smoothies to the slow adaptation method.
Read article - Editorial·15 May 2026·7 min read
Spirulina dosage guide: how much to take and when
There is no single correct spirulina dose. The right amount depends on your goal — iron, cholesterol, hay fever, exercise. Here's the complete evidence-based dose reference for each use case.
Read article - Buying·14 May 2026·6 min read
Spirulina label claims decoded: what they mean and what they don't
Organic, raw, wild-harvested, non-GMO, third-party tested, high phycocyanin. Each claim on a spirulina label means something different — and some mean almost nothing. Here's the honest breakdown.
Read article - Science·14 May 2026·7 min read
Spirulina for older adults: what the evidence says
Several of spirulina's best-supported benefits — cholesterol, oxidative stress, protein density, iron — are directly relevant to people over 60. Here's the evidence and the specific considerations for older adults.
Read article - Buying·14 May 2026·5 min read
Spirulina powder vs tablets: which form should you choose?
Powder and tablets are the same spirulina in different forms. The choice is almost entirely about how you use it — flexibility, taste, cost, and convenience. Here's how to decide.
Read article - Science·13 May 2026·7 min read
Spirulina side effects and drug interactions: a complete guide
Spirulina is generally well-tolerated but has real contraindications — phenylketonuria, autoimmune conditions, anticoagulants, diabetes medications. This is the complete, honest list.
Read article - Science·13 May 2026·6 min read·Members
Spirulina and skin health: what the evidence actually supports
Spirulina is widely marketed for skin health. The antioxidant and anti-inflammatory mechanisms are plausible; clinical skin-specific evidence is thin. Here's the honest picture.
Read article - Science·12 May 2026·6 min read
Spirulina and gut health: what the evidence actually shows
Spirulina contains prebiotic polysaccharides that selectively support Lactobacillus populations. The mechanism is solid; the human trials are limited. Here's an honest assessment for people interested in the gut health angle.
Read article - Science·12 May 2026·7 min read
Spirulina as an antioxidant: the mechanisms, the evidence, and the limits
Spirulina's antioxidant activity is real and specific — phycocyanin, beta-carotene, SOD upregulation. Here's what these compounds do, where the evidence is strongest, and what the ORAC-score marketing actually misses.
Read article - Science·12 May 2026·7 min read
Spirulina and immune function: what the research shows
Spirulina modulates NK cell activity, inhibits COX-2 inflammatory signalling, and may stimulate secretory IgA. Here's an honest breakdown of the immune evidence — what's established, what's preliminary, and what the marketing overstates.
Read article - Editorial·11 May 2026·6 min read
Cooking with spirulina: what works, what doesn't, and why
Spirulina has a reputation for being hard to cook with — the flavour, the colour changes, the heat sensitivity. It's easier than it sounds once you understand the rules. A practical guide from the community.
Read article - Science·11 May 2026·6 min read
Spirulina and liver health: what the research shows
Several animal and a handful of human studies suggest spirulina has hepatoprotective properties — protecting liver tissue from oxidative damage. Here's an honest look at the evidence and who it might be relevant for.
Read article - Science·11 May 2026·8 min read
Spirulina in pregnancy: a detailed guide for cautious use
Well-tested spirulina at modest doses has real potential benefits in pregnancy — particularly for iron. The risk isn't spirulina itself, it's contaminated product. Here's a detailed guide for navigating this carefully.
Read article - Community·10 May 2026·9 min read
Growing spirulina at home: a realistic beginner's guide
Spirulina is one of the few photosynthetic organisms a motivated home cultivator can actually grow. It requires specific conditions but no specialist equipment. Here's what you actually need, what you can expect, and where most beginners go wrong.
Read article - Editorial·10 May 2026·7 min read
Spirulina and sustainability: the honest case for the world's most efficient protein
Per gram of complete protein, spirulina uses a fraction of the land and water of animal protein and most plant proteins. This isn't marketing — it's a well-documented fact. Here's the honest environmental case.
Read article - Science·10 May 2026·8 min read
Spirulina and cholesterol: the strongest evidence most people haven't heard of
Spirulina consistently reduces LDL, total cholesterol, and triglycerides across multiple well-designed trials. The effect is modest but reproducible, and the mechanisms are understood. Here's the full picture for people managing their lipid panel.
Read article - Science·9 May 2026·6 min read
Spirulina and weight loss: separating real signal from supplement marketing
Some trials show spirulina reduces body fat, particularly in obese individuals combining it with exercise. The evidence is limited. Here's an honest assessment of what it can and can't do for body composition.
Read article - Science·9 May 2026·7 min read
Spirulina and blood sugar: modest but real evidence for metabolic support
Several trials in people with type 2 diabetes and metabolic syndrome show spirulina can modestly reduce fasting blood glucose and HbA1c. This isn't a diabetes treatment, but it's worth understanding what the data shows.
Read article - Science·9 May 2026·7 min read·Members
Spirulina for hay fever: the evidence, the dose, and realistic expectations
Spirulina has two double-blinded trials showing meaningful reduction in allergic rhinitis symptoms. It's one of spirulina's best-supported clinical uses, and the least discussed. Here's what the studies actually show.
Read article - Buying·8 May 2026·6 min read
Buying spirulina in Turkey and the Middle East: what's available and what to check
Turkey has a growing spirulina market — local producers, a handful of established import brands, and an audience that takes food quality seriously. Here's what to look for and what to avoid in the regional market.
Read article - Science·8 May 2026·7 min read
Spirulina for vegans: what it genuinely offers and what it doesn't
Vegans are frequently told spirulina solves their protein, iron, and B12 concerns in one product. Two of those claims are largely true. One of them — the B12 — is actively misleading. Here's the full picture.
Read article - Buying·7 May 2026·9 min read
The spirulina buying guide: how to find a good product at any budget
There are hundreds of spirulina brands on the market and the quality range is enormous. This guide gives you a practical framework — what to check, what to ignore, and where to look in each price tier.
Read article - Science·7 May 2026·8 min read
Spirulina for athletes: what the research actually shows
A handful of small trials suggest spirulina can modestly improve endurance and reduce exercise-induced oxidative stress. The evidence is real but limited. Here's an honest assessment for people who train seriously.
Read article - Editorial·7 May 2026·5 min read
How to store spirulina properly (and how to tell when it's gone off)
Light, heat, oxygen, and moisture all degrade spirulina faster than you'd expect. The phycocyanin drops, the colour fades, and the flavour shifts — usually before the best-before date. Here's the right system.
Read article - Buying·7 May 2026·9 min read
Spirulina vs chlorella: which microalgae supplement is better?
Both are dense, green, and sold in the same section of every health shop. Their biology, nutrient profiles, and ideal use cases are genuinely different. Here's how to choose — or how to use both.
Read article - Buying·6 May 2026·8 min read
Open-pond vs closed-system spirulina: does the production method matter?
Closed-system producers charge more and cite lower contamination risk. Open-pond producers argue their quality is just as high with proper testing. Both are partly right. Here's how to think about it.
Read article - Science·6 May 2026·7 min read
Spirulina for children: what parents need to know
Some parents add spirulina to their children's food; others are cautious about a supplement with no RDA for kids. This is a balanced look at the evidence, the doses studied, and the practical caveats.
Read article - Science·6 May 2026·8 min read
Phycocyanin: what it is and why it matters when you buy spirulina
The blue pigment in spirulina is the most pharmacologically active compound in the whole food. It's also the best quality signal when evaluating a brand. Here's what you need to know.
Read article - Editorial·6 May 2026·6 min read
How to actually build a daily spirulina habit
Most people try spirulina, hate the taste, and stop. The ones who stick with it have a system. Here's the system — covering dose progression, timing, and the recipes that make compliance easy.
Read article - Science·4 May 2026·7 min read
Spirulina and iron: who actually benefits
The clearest, best-supported clinical use of spirulina is for iron-deficient adults — and it's the most overlooked. Here's the case, the dose, and the caveats.
Read article - Editorial·4 May 2026·5 min read
The case against “blue spirulina†powder
It's bright, it's photogenic, and it costs ten times more per gram than the real thing. Here's why we don't recommend isolated phycocyanin as a substitute for whole spirulina.
Read article - Buying·4 May 2026·6 min read
How to read a Certificate of Analysis in five minutes
Every reputable spirulina producer publishes a CoA. Most people don't know what they're looking at. Here's the short version, with the fields that actually matter.
Read article - Editorial·4 May 2026·4 min read
Why we started Spirulina Guru
After nineteen years of moderating the largest organic spirulina community on Facebook, the same questions kept coming back. This is the site we wished existed.
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