MOTS-c

MOTS-c is a 16-amino acid mitochondrial-derived peptide encoded within the 12S rRNA region of mitochondrial DNA. Research suggests its discovery expanded the concept of mitochondria from energy-producing organelles to signaling systems capable of generating regulatory peptides. The peptide is studied mainly in metabolism, exercise biology, and aging-related stress adaptation. Mechanistic studies indicate MOTS-c can activate AMPK-related pathways and alter nuclear gene expression in response to metabolic stress. Research suggests the peptide may move from mitochondria-associated contexts into the nucleus, where it helps coordinate adaptive transcriptional responses. Preclinical data also indicate links to folate-cycle metabolism, glucose handling, and cellular stress resistance. Animal models show that MOTS-c can improve insulin sensitivity and blunt weight gain during high-fat feeding. Studies indicate treated mice may display better glucose tolerance, higher metabolic flexibility, and improved physical performance in selected aging models. Exercise research also suggests circulating MOTS-c levels rise with physical activity, supporting its role as a mitochondria-derived metabolic signal. The notable finding in the literature is that MOTS-c connects mitochondrial signaling to whole-body metabolism in a direct way. Research suggests it may function as a stress-responsive peptide coordinating cellular and systemic adaptation. Most of the strongest evidence remains preclinical, but the conceptual importance of the peptide is already substantial. References: [1] Lee C, Zeng J, Drew BG, et al. (2015). The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metabolism. PMID: 25738459. [2] Kim KH, Son JM, Benayoun BA, Lee C. (2018). The Mitochondrial-Encoded Peptide MOTS-c Translocates to the Nucleus to Regulate Nuclear Gene Expression in Response to Metabolic Stress. Cell Metabolism. PMID: 29937373. [3] Bhatt R, Li J, Huang ZW, et al. (2022). MOTS-c: An Emerging Mitochondrial Derived Peptide with Diverse Biological Effects and Therapeutic Potential for Age-Associated Diseases. Ageing Research Reviews. PMID: 35489571. [4] Lu H, Tang S, Xue C, et al. (2019). Mitochondrial-derived peptide MOTS-c increases adipose thermogenic activation to promote cold adaptation. International Journal of Molecular Sciences. PMID: 31623199. For research use only. Not for human or veterinary use.