MOTS-c: Mitochondrial-Derived Peptide Research Overview

MOTS-c — mitochondrial open reading frame of the 12S rRNA type-c — is a 16-amino-acid peptide encoded within mitochondrial DNA rather than nuclear DNA. That origin places it in the class known as mitochondrial-derived peptides, a comparatively recent area of research interest.

The reported human sequence is Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg, with formula C101H152N28O22S2 and molecular weight approximately 2174.6 g/mol.

Published work describes MOTS-c as a regulator that acts on the nucleus despite its mitochondrial origin — a 2019 BioEssays review frames it precisely that way. The mechanisms most often investigated are AMPK activation, regulation of nuclear gene expression related to metabolic homeostasis, and involvement in folate-methionine metabolism. Research contexts include insulin sensitivity, mitochondrial function, and inflammasome regulation.

A 2020 review in the American Journal of Physiology situates MOTS-c within the wider family of mitochondrial-derived peptides in energy metabolism.

In vitro work has examined MOTS-c in aged human placenta-derived mesenchymal stem cells, reporting effects on cellular homeostasis markers. Rodent work includes a 2026 study reporting that MOTS-c suppressed systemic and cardiac inflammasome activation in a diabetic rat model.

Human data are of a different character. A 2021 study identified a mitochondrial DNA polymorphism within the MOTS-c coding region associated with type 2 diabetes risk in population genetics analysis, and a 2026 cross-sectional study reported reduced circulating MOTS-c levels in Hashimoto's thyroiditis. These are correlational observations about endogenous MOTS-c concentrations, not interventional dosing trials.

The honest summary is that MOTS-c is mechanistically interesting and clinically unproven: no verified interventional human trials support it as a therapeutic agent.

MOTS-c has no approved indication in any jurisdiction identified in this literature review. It is supplied strictly as a laboratory research material.

Supplied lyophilized in a sealed vial. Standard handling applies: keep sealed and dry, equilibrate before opening, reconstitute for the intended assay, aliquot rather than repeatedly freezing and thawing, and protect solutions from light and heat. Record the lot number with your data.

This monograph summarizes published scientific literature for educational and reference purposes only. It is not medical, veterinary, clinical, or dosing guidance, and nothing here should be read as a claim that this compound is safe, effective, or approved for use in humans or animals.

Material supplied by North Summit Labs is intended strictly for in-vitro laboratory research by qualified professionals. It is not a drug, supplement, food, cosmetic, or medical device, and it is not for human or animal consumption. Investigators are responsible for complying with their own institutional oversight, biosafety, and legal requirements.