Mechanistic Pathways · 9 min read · 2027-10-28
Spirulina and Exosomes
Cells communicate by sending each other miniature membrane packages filled with selected molecular cargo. In disease, these packages carry damage signals.
Exosome Biology
Exosomes are 30-150 nm extracellular vesicles formed in multivesicular bodies and released by exocytosis. They carry tetraspanins (CD9, CD63, CD81), microRNAs, mRNAs, lipids, and signaling proteins. Exosomes mediate intercellular communication at distance, with selective cargo packaging determined by the producing cell's state.
Inflammatory Exosomes
Inflammation alters exosome cargo — increased inflammatory miRNAs (miR-21, miR-155), HSP70, and damage-associated molecular patterns. Tumor-derived exosomes carry metastasis-promoting cargo and immunosuppressive signals. Spirulina's anti-inflammatory effects shift exosome cargo composition toward physiological profiles in plasma exosome studies.
Conclusion
Spirulina modulates exosome biology through reduced inflammatory exosome cargo (miR-21/155 reduction) and shifted plasma exosome composition. While the exosome field remains rapidly evolving, spirulina's effects on intercellular signaling extend beyond direct cell-cell contact through this nanovesicle-mediated layer.
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