MOTS-c

Overview

MOTS-c (Mitochondrial open reading frame of the 12S rRNA-c) is a 16-amino-acid peptide discovered in 2015 by researchers led by Pinchas Cohen and Changhan Lee at the University of Southern California [1]. It represents a novel class of signaling molecules known as mitochondrial-derived peptides (MDPs) — a category distinct from all other peptides on this site.

Unlike conventional peptides encoded by nuclear DNA, MOTS-c is encoded entirely within the mitochondrial genome itself. It functions as a retrograde signaling hormone — communicating outward from the mitochondria to the cell nucleus, and ultimately into the bloodstream, to regulate systemic metabolism in response to energy status and physical stress [1].

Endogenous MOTS-c is naturally produced in human skeletal muscle during exercise and circulates in plasma. Its levels decline with age, which has contributed to interest in exogenous supplementation in longevity research contexts.

What Makes MOTS-c Unique

Research Areas and Claims

• Metabolic Regulation / "Exercise Mimetic" (Animal Evidence Only): In mouse models, exogenous MOTS-c prevents diet-induced obesity, reverses age-dependent insulin resistance, and improves physical performance across all age groups. These effects are the basis for "exercise in a bottle" marketing — but they have not been replicated in controlled human intervention trials [1][2].

• Bone Formation / Osteogenesis (Animal Evidence Only): Administration of MOTS-c in ovariectomized mice significantly prevented bone loss, suggesting a role in bone metabolism and potential application in osteoporosis research — in animal models [4].

• Muscle Preservation (Animal Evidence Only): MOTS-c reduced myostatin expression and muscle atrophy signaling in animal models, suggesting potential applications in age-related muscle loss — again, without human interventional data [5].

• Endogenous Exercise Response (Human Observational): The only published human data confirms that endogenous MOTS-c is exercise-responsive — levels spike significantly during stationary cycling in healthy young men. This establishes physiological relevance but does not validate exogenous injection efficacy [2].

Mechanism of Action

1. AMPK Activation — Energy Sensing: MOTS-c targets skeletal muscle and activates AMPK (AMP-activated protein kinase), the body's primary cellular energy sensor. AMPK activation increases glucose uptake, promotes fatty acid oxidation, and inhibits energy-consuming biosynthetic pathways — producing effects that biochemically mimic physical exercise or caloric restriction [1].
2. Nuclear Translocation — Epigenetic Regulation: Under conditions of metabolic or oxidative stress, MOTS-c physically translocates from the mitochondria into the cell nucleus. Once in the nucleus, it acts as an epigenetic regulator — binding directly to DNA and altering the transcription of genes associated with antioxidant defense and metabolic homeostasis [2][3].
3. Retrograde Mitochondrial–Nuclear Signaling: As a mitochondrial-derived peptide, MOTS-c functions as part of a retrograde communication system — informing the nucleus about the energy and oxidative state of the cell's mitochondria. This class of signaling is distinct from all nuclear-encoded hormonal peptides and represents an entirely new layer of metabolic regulation [1].

Dosing Context

Human Evidence

Human Observational Study

Key Animal Studies (Preclinical)

The studies below are the primary interventional evidence cited in support of MOTS-c's therapeutic potential. All are preclinical (mouse) studies. Human therapeutic translation is not established.

⚠ All rows above are preclinical (mouse) studies. Human therapeutic translation is not established.

Regulatory Status & Limitations

Vendor Directory

Data collected February–March 2026. Sorted by $/mg ascending within each section.

SC Injection — Finnrick A-Rated

Kit format. 99.99% purity; endotoxin-tested. Sale prices shown (~70% off regular price).

SC Injection — Non-Finnrick

† Quantity-tiered pricing. Single-unit rate shown.

Nasal Spray — Pure Rawz Only

No Public Price / Not Available

References

1. [1]

   Lee C, et al. "The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance." Cell Metab. 2015. pubmed.ncbi.nlm.nih.gov/25738459

2. [2]

   Reynolds JC, et al. "MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis." Nat Commun. 2021. pubmed.ncbi.nlm.nih.gov/33473109

3. [3]

   Kim SJ, et al. "The mitochondrial-derived peptide MOTS-c promotes cell survival under metabolic stress." J Mol Med (Berl). 2018. pubmed.ncbi.nlm.nih.gov/29961111

4. [4]

   Ming W, et al. "Mitochondrial-derived peptide MOTS-c prevents bone loss in ovariectomized mice." Am J Transl Res. 2018. pubmed.ncbi.nlm.nih.gov/30383536

5. [5]

   Kumagai H, et al. "MOTS-c reduces myostatin and muscle atrophy signaling." Am J Physiol Endocrinol Metab. 2020. pubmed.ncbi.nlm.nih.gov/32485121