Mechanistic Pathways · 9 min read · 2027-11-11
Spirulina and HMGB1
A nuclear protein that becomes an alarm signal when released — driving sterile inflammation in tissue injury, sepsis, and chronic disease.
HMGB1 Biology
High mobility group box 1 (HMGB1) is a nuclear chromatin-binding protein. Released passively from necrotic cells or actively from activated immune cells, extracellular HMGB1 binds TLR4 and RAGE, driving inflammatory cytokine production. HMGB1 elevation occurs in sepsis, ischemia-reperfusion, autoimmunity, and chronic inflammation.
Spirulina Reduces HMGB1
Spirulina's reduced cell death (via apoptosis suppression in inflammatory contexts) and reduced active HMGB1 secretion via inflammasome dampening produce 20-35% lower serum HMGB1 in chronic inflammation interventions. Downstream TLR4/RAGE activation drops correspondingly.
Conclusion
Spirulina's HMGB1 reduction breaks the sterile inflammation amplification loop where cell damage releases alarmins that drive further damage. Particularly relevant in ischemia-reperfusion, chronic inflammation, and acute inflammatory injury.
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