MOTS-c Research Brief: A Mitochondrial-Encoded Peptide in Mouse Metabolism
MOTS-c is a sixteen-amino-acid peptide written in mitochondrial DNA rather than the nucleus. This brief summarises the mouse discovery study on AMPK and insulin sensitivity, the follow-up reviews, and the absence of human intervention data.
LWL Research Brief
Evidence · Early01Mouse discovery study plus reviews.
- 02Population
- Mice, including diet-induced obesity models.
- 03Intervention
- MOTS-c, a 16-amino-acid peptide encoded in mitochondrial DNA.
- 04Primary endpoint
- AMPK activation, insulin sensitivity, metabolic homeostasis.
05Results
- The discovery study reported MOTS-c activating AMPK and improving metabolic homeostasis and insulin sensitivity in mice (Cell Metab 2015).
- Reviews describe MOTS-c as a regulator of muscle and fat metabolism and examine how exercise influences it.
06Limitations
- Core findings are from mice; human work is mostly observational measurement of circulating levels.
07What this evidence does NOT demonstrate
- Metabolic, endurance or weight outcomes from administered MOTS-c in people.
- A human dose or safety profile.
08Citations
- Lee et al. MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metab, 2015. PMID 25738459 ↗
- MOTS-c: a novel mitochondrial-derived peptide regulating muscle and fat metabolism (review). Free Radic Biol Med, 2016. PMID 27216708 ↗
- Mitochondrial-derived peptides and exercise (review). Biochim Biophys Acta Gen Subj, 2021. PMID 34520826 ↗
Summary of published literature · For research use only · Not medical advice
Mitochondria carry their own small, separate genome, a remnant of their origin as independent organisms. For most of modern biology that DNA was assumed to encode only the machinery of energy production itself.
MOTS-c is one of a small group of peptides found to be encoded there instead — mitochondrial-derived peptides. Its existence suggests mitochondria are not only power plants taking instructions from the nucleus, but are also sending signals outward about their own state.
A status report, not a fuel additive
This is the most useful way to think about it. MOTS-c is studied as a signalling molecule that communicates mitochondrial condition to the rest of the cell, and that influences how the cell handles glucose and energy substrate in response.
Much of the research connects it to AMPK, the cellular energy sensor — the same pathway activated by exercise and by energy scarcity. That is the reason MOTS-c is frequently described as an exercise-mimetic in the literature: not because it substitutes for training, but because it is studied at the same signalling junction training acts on.
Where the research clusters
- Metabolic flexibility: how readily the body switches between fuel sources.
- Insulin sensitivity: glucose handling, the most-studied endpoint.
- Exercise capacity: the AMPK overlap above.
- Ageing: circulating MOTS-c levels decline with age, which is the observation that opened the longevity line of research — the same shape of finding as GHK-Cu.
What we supply
Our MOTS-c is a 10 mg lyophilised vial, HPLC-verified, with a purity Certificate of Analysis available on request.
Supplied strictly for laboratory research purposes. Not for human or veterinary use.
Reviewed for research accuracy. Educational / research context only — not medical advice.
