MOTS-c

MOTS-c is a 16-amino acid peptide encoded by mitochondrial DNA — making it one of the few known mitochondrial-derived peptides (MDPs) with signaling functions. Often described as an "exercise mimetic," it plays a key role in metabolic regulation, glucose homeostasis, and cellular energy production. It represents a frontier area of peptide research connecting mitochondrial biology to metabolic health.

MOTS-c regulates metabolic functions by activating AMPK (a master metabolic regulator), promoting glucose uptake in skeletal muscle independent of insulin, enhancing fatty acid oxidation, and improving mitochondrial function. It increases muscle glucose uptake without stimulating insulin, positioning it as a potential metabolic flexibility enhancer.

No approved indications. Research: metabolic optimization, exercise mimetic effects, insulin sensitivity, aging-related metabolic decline.

Primarily preclinical data from Dr. Changhan David Lee's lab at USC. Animal studies demonstrate improved glucose homeostasis, exercise capacity, and metabolic flexibility. Human data extremely limited. Represents a novel biological concept (mitochondrial signaling peptides) rather than a clinically validated therapy.

Minimal data. Generally well-tolerated in available preclinical studies. Long-term effects completely unknown.

FDA Category 2. Very early-stage research compound. No regulatory pathway currently underway.

Drug Interactions: Unknown. May theoretically interact with diabetes medications. Research Gaps: Nearly everything — mechanism details, human PK, safety, efficacy, dosing, long-term effects.