How It Works
MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA Type-c) is a 16-amino-acid mitochondrial-derived peptide discovered in 2015 by Dr. Changhan David Lee and colleagues at the University of Southern California. It is encoded within the mitochondrial genome — making it one of only a handful of known mitochondrial-derived peptides with signaling functions.
MOTS-c acts as a retrograde signal from mitochondria to the nucleus, activating AMPK (AMP-activated protein kinase) — a master metabolic regulator. Through AMPK activation, it enhances glucose uptake, promotes fatty acid oxidation, and improves insulin sensitivity. Notably, exercise has been shown to increase circulating MOTS-c levels, leading researchers to describe it as an "exercise mimetic" at the molecular level.
The peptide also translocates to the nucleus during metabolic stress, where it regulates gene expression related to the antioxidant response and cellular homeostasis. Circulating MOTS-c levels decline with age, which may contribute to age-related metabolic dysfunction.
Benefits
- Improved insulin sensitivity and glucose metabolism in preclinical models
- Reduced fat accumulation — prevention of diet-induced obesity in mouse studies
- Exercise mimetic properties — activates AMPK pathways similar to physical activity
- Anti-aging potential — restoration of age-related mitochondrial dysfunction
- Enhanced physical performance — improved endurance and muscle homeostasis in aging mice
Side Effects
- Limited human safety data — most research conducted in animal models
- Injection site reactions — redness and mild discomfort (common with subcutaneous peptides)
- Mild nausea — occasionally reported anecdotally
- Fatigue — some users report transient tiredness in early use
- Long-term safety profile in humans remains unknown
Dosing Protocol
| Parameter | Details |
|---|---|
| Standard Dose | 5mg per injection |
| Frequency | 2-3 times weekly |
| Administration | Subcutaneous injection |
| Cycle Length | 8-12 weeks |
| Titration | Some protocols start at 2.5mg to assess tolerance |
What You Will Need
- MOTS-c lyophilized vial (typically 5mg or 10mg)
- Bacteriostatic water (30mL)
- Insulin syringes (1mL, 29-31ga)
- Alcohol swabs
- Sharps container