MOTS-c Guide & Dosage Chart

What is MOTS-c?

MOTS-c stands for Mitochondrial Open Reading Frame of the 12S rRNA type-C. That's a mouthful — but the short version is this: it's a tiny peptide (a mini-protein made of just 16 amino acids) encoded not by your main DNA, but by the DNA found inside your mitochondria — the small power-plant structures inside your cells.^[4]

That makes MOTS-c unusual. Almost every protein your body makes is coded by nuclear DNA (the DNA in the cell's nucleus). MOTS-c comes from mitochondrial DNA, making it part of a rare family called mitochondrial-derived peptides.^[1] It circulates in the blood, and research has found its levels tend to drop as we age.^[1]

Important note: MOTS-c is a research compound studied in laboratory and animal settings. It is not approved for human use, and nothing here is medical advice.

How MOTS-c Works

Think of your mitochondria as the engine room of the cell. Normally, the engine room just generates power and stays put. But MOTS-c acts like a messenger that leaves the engine room and heads straight to the control tower — the nucleus — to adjust how genes are read.^[3]

Here's the basic chain of events researchers have mapped out:

• Inside the cell, MOTS-c disrupts a pathway called the folate-methionine cycle — a chemical loop cells use to build certain molecules.
• Disrupting that cycle triggers a buildup of a compound called AICAR.
• AICAR activates AMPK, a master energy-sensing switch inside cells.^[4]
• Once AMPK is switched on, the cell shifts into a more efficient, metabolically balanced state.

MOTS-c can also travel to the nucleus during metabolic stress — like low glucose or oxidative stress — and directly influence which genes get turned on or off.^[3] Researchers also note it affects the expression of genes such as GLUT4 (a glucose transporter), STAT3, and IL-10, which are involved in blood sugar regulation and immune responses.^[2]

What the Research Shows

The landmark 2015 study published in Cell Metabolism first put MOTS-c on the map. Researchers found that injecting MOTS-c into mice prevented both age-related insulin resistance and the insulin resistance caused by a high-fat diet. It also reduced diet-induced obesity. The primary target appeared to be skeletal muscle, where MOTS-c activated the AMPK pathway.^[4]

Later reviews have expanded that picture considerably. MOTS-c has been studied for its potential to reduce insulin resistance, improve muscle function, support bone metabolism, and slow certain aspects of aging.^[2] Plasma MOTS-c levels decline with age, which has made it an interesting target in aging research.^[1]

Beyond metabolism, researchers have explored MOTS-c in other disease areas. One 2023 review highlighted its potential role in pulmonary fibrosis — a serious lung-scarring disease — noting that MOTS-c's effects on inflammation, oxidative stress, and mitochondrial health could be relevant to that condition.^[6]

A 2024 study in Advanced Science found that MOTS-c levels were reduced in the blood and tumor tissue of ovarian cancer patients. In lab and animal models, adding exogenous MOTS-c slowed cancer cell growth, migration, and invasion — and did so without signs of systemic toxicity in the animal models tested.^[5]

What MOTS-c Is Being Studied For

• Insulin resistance and type 2 diabetes — improving glucose uptake in skeletal muscle^[4]
• Obesity — reducing fat accumulation driven by diet^[4]
• Gestational diabetes — managing hyperglycemia and insulin resistance in pregnancy-related mouse models^[2]
• Diabetic cardiomyopathy — reducing oxidative stress and inflammatory signaling in the heart in rat models^[1]
• Aging — given that circulating MOTS-c falls with age, researchers are exploring it as a potential aging-related intervention^[1]
• Pulmonary fibrosis — early-stage investigation into its anti-inflammatory and mitochondrial-protective effects^[6]
• Ovarian cancer — preclinical research into its ability to suppress tumor progression^[5]

How MOTS-c Is Dosed in Research

Dosing in research studies has varied depending on the disease model and species being studied. The dosage chart on this page lays out the specific doses and schedules used in published animal trials — including mouse and rat protocols for gestational diabetes and diabetic cardiomyopathy models. If you want to explore how those doses scale or convert, the calculator on this page can help you work through the numbers. Always cross-reference with the original published studies before drawing any conclusions.

Mixing and Storing MOTS-c

MOTS-c for research use typically comes as a lyophilized powder — meaning it has been freeze-dried for stability. Before use in a study, it needs to be reconstituted (dissolved) in a suitable liquid. Sterile water or a dilute acetic acid solution (like 0.1% acetic acid in sterile water) are common choices in research settings, though the specific solvent should follow the supplier's certificate of analysis.

Once mixed, MOTS-c solution is generally stored at 4°C (refrigerator temperature) for short-term use, or frozen at -20°C or lower for longer storage. Avoid repeated freeze-thaw cycles, as these can degrade the peptide. Keep the unmixed powder away from moisture, heat, and light. As with all research compounds, label everything clearly with the date of reconstitution and handle according to your institution's protocols.

Sources

1. MOTS-c: A promising mitochondrial-derived peptide for therapeutic exploitation. — Frontiers in endocrinology, 2023. PMID 36761202.
2. MOTS-c Functionally Prevents Metabolic Disorders. — Metabolites, 2023. PMID 36677050.
3. MOTS-c: A Mitochondrial-Encoded Regulator of the Nucleus. — BioEssays : news and reviews in molecular, cellular and developmental biology, 2019. PMID 31378979.
4. The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. — Cell metabolism, 2015. PMID 25738459.
5. Mitochondrial-Derived Peptide MOTS-c Suppresses Ovarian Cancer Progression by Attenuating USP7-Mediated LARS1 Deubiquitination. — Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2024. PMID 39321430.
6. MOTS-c: A potential anti-pulmonary fibrosis factor derived by mitochondria. — Mitochondrion, 2023. PMID 37307934.