Evidence review · Published July 22, 2026 · Sources checked July 22, 2026

MOTS-c research overview

MOTS-c is a 16-amino-acid mitochondrial-derived peptide first reported in 2015. This page summarizes what peer-reviewed laboratory studies report, the models they used, and what those findings do not establish.

Evidence boundary: the studies below do not establish that a synthetic MOTS-c research product is safe or effective for treating, preventing, or diagnosing any condition in humans. The Pep Labs product is supplied only for qualified in vitro laboratory research and is not for human or animal use.

What is MOTS-c?

MOTS-c stands for mitochondrial open reading frame of the 12S rRNA-c. The original 2015 report described a short open reading frame within mitochondrial 12S rRNA that encodes a 16-amino-acid peptide. That work examined endogenous MOTS-c and experimental peptide exposure in cultured cells and mouse models.

Mechanisms investigated in laboratory studies

The 2015 experiments reported changes involving folate and purine pathways together with AMPK-associated signaling. A 2018 cell-culture study reported stress-associated movement of MOTS-c into the nucleus and changes in stress-responsive gene expression. These mechanistic findings are not proof of clinical benefit.

MOTS-c and exercise research

A 2021 paper combined mouse experiments, cell studies, and measurements from ten young male participants. The human portion observed endogenous MOTS-c around an exercise session; it did not test a marketed MOTS-c product as a treatment. “Exercise mimetic” should not be read as evidence that a research product replaces exercise in people.

Primary sources

  1. Lee et al., Cell Metabolism (2015), DOI 10.1016/j.cmet.2015.02.009 — identification and initial cell and mouse experiments.
  2. Kim et al., Cell Metabolism (2018), DOI 10.1016/j.cmet.2018.06.008 — cell-culture research on stress-associated nuclear translocation.
  3. Reynolds et al., Nature Communications (2021), DOI 10.1038/s41467-020-20790-0 — mouse, cell, and small human exercise-cohort observations.

Literature and product documentation are different

A publication describes a study. A batch-specific Certificate of Analysis documents characteristics of a supplied research material. One does not substitute for the other.

Review MOTS-c product specifications · Browse the COA library · Read the research-use policy

Prepared by The Pep Labs Research Editorial Team. This evidence summary is not medical advice and contains no dosing or administration guidance.