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Peptide encyclopedia/ MOTS-c
Illustration for MOTS-c

THE PEPSRADAR ENCYCLOPEDIA

MOTS-c

Mitochondrial signaling and metabolic research

Research topics · Sources checked 2026-10-04

Read the studies ↓Explore the molecule ↗

MOTS-c AT A GLANCE

The question behind the molecule.

Read findings and limitations ↓
2 selected publicationsContext mattersExperiments in cells and mice do not establish exercise replacement or weight-loss outcomes in people.

What is MOTS-c?

MOTS-c is a 16-amino-acid peptide studied as a mitochondrial signal. Its metabolic research is frequently discussed alongside exercise and aging.

Biological role or research focus

Mitochondrial signaling and metabolic research.

Experiments in cells and mice do not establish exercise replacement or weight-loss outcomes in people.

Role reference: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

Names you may encounter

MOTS C · MOTSC

Search terms can include brands, combinations, or historical names. They are not automatic product equivalents.

Class / identity
Mitochondrial-derived signaling peptide
Main research area
Metabolic stress responses
Evidence featured
Animal / laboratory study
Source check
October 4, 2026

Source: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

Molecular structure

MOTS-c: 2d molecular structure. The cited molecular record is shown. Salts, protonation, and formulation ingredients may differ from a specific product.⤢ Enlarge 2D
2D molecular structureThe cited molecular record is shown. Salts, protonation, and formulation ingredients may differ from a specific product.PubChem · CID 146675088 ↗

Mechanism & research rationale

The original study connected MOTS-c with folate/purine metabolism and activation of AMPK, a cellular energy-sensing pathway. That mechanism was explored in cells and mice.

Source: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

Research context & status

The selected evidence is preclinical. It does not establish a human exercise substitute, weight-loss therapy, or treatment for diabetes.

Source: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

What does the evidence show?

Selected published evidence, with the population, findings, and limits kept together. These original summaries draw on publication abstracts; they are not a systematic review.

Animal / laboratory study · 2015

Metabolic homeostasis study

The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance.

Population / model
Cell systems and mouse models of aging or high-fat feeding.
Study design
Mechanistic metabolic assays and treatment experiments in mice.
Main finding
MOTS-c affected folate/purine metabolism and AMPK signaling; treated mice were protected against some insulin-resistance and obesity phenotypes.
Limits & context
A mitochondrial origin does not establish a safe supplement or exercise replacement. This study did not test clinical weight loss or diabetes outcomes in humans.

Source: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

Human observations + mouse experiments · 2021

Exercise-associated signaling and mouse physical performance

Were people given MOTS-c, or was their own peptide measured after exercise?

Population / model
Human exercise observations, cultured muscle cells, and young, middle-aged, and old mice.
Study design
The human component measured endogenous MOTS-c responses to exercise; administration experiments and late-life treatment were performed in mice.
Main finding
Exercise increased endogenous MOTS-c in human muscle and circulation. In mice, administered MOTS-c improved reported physical-performance measures across age groups; late-life experiments examined physical capacity and healthspan.
How to read it
The human observations and mouse interventions answer different questions. An exercise-associated biomarker change does not show that injecting the peptide improves human fitness.
Limits & context
The abstract does not report a randomized human MOTS-c treatment trial. Mouse physical-capacity or healthspan results cannot be relabeled as human lifespan extension.

Source: Reynolds et al. · Nature Communications · 2021 ↗

Read the original paper for methods, adverse events, funding, and conflicts of interest. Publisher access may require a subscription.

Related records in our PubMed snapshot

MOTS-c in sepsis-induced cardiomyopathy: Mechanisms and translational potential. ↗
European journal of pharmacology · Issue date 2026 Oct 15 · Not appraised

MOTS-c, a mitochondrial-derived peptide, ameliorates lysosomal membrane permeability and improves survival of soft tissue transplantation. ↗
Autophagy · Issue date 2026 Oct · Not appraised

Search additional PubMed records ↗

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New source discoveries

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Safety & precautions

Safety evidence & remaining uncertainty

FDA reports a human-exposure evidence gap. Endogenous signaling does not establish the safety of externally administered commercial preparations.

Source: FDA · Peptide compounding safety concerns ↗

This is not a complete list of contraindications, interactions, or adverse effects. Medicine labels apply to specific products and indications; research-use listings are not interchangeable with approved medicines.

What are people discussing?

Thomas DeLauer

Myostatin and a proposed muscle pathway

The discussion refers to a rodent study while connecting MOTS-c, mitochondria, and myostatin. The exact study behind the numerical claim has not been verified for this note.

Question to take to the evidence

Which primary paper supports the claim, and were the outcomes measured in rodents or people?

▶ Watch 19:03–20:20 ↗

Caption excerpt reviewed · Claims not independently verified · 2026-10-04
Original episode: The Best Peptide to Truly Lose Fat is Not GLP-1, it’s MOTS-C to Boost Mitochondria

Watch the source discussions

47 matching video records · 5 with captions indexed.

Across the full library, 30 caption files are indexed from 20,199 inventoried videos. Most transcripts remain unreviewed. Select a thumbnail or timestamp to watch inside PepsRadar. Thumbnail images load from YouTube.

Browse all 47 matching videos →

Sources & supplier listings

Listings are grouped by the vendor’s stated identity. Blends and modified derivatives are labeled separately. Inclusion is not a quality assessment or an endorsement.

Named compound

MOTS-c (10mg)

BioLongevity Labs · Vendor-labeled research use only

$109.97

Listed in stock · Snapshot 2026-10-04
Options may vary. Shipping and tax excluded.

View seller listing ↗

Affiliate link · PepsRadar may earn a commission from purchases through this link. Affiliate disclosure.

Named compound

MOTS-C (10 mg / 40 mg)

American Peptides · Vendor-labeled research use only

$100.00–$160.00

Listed in stock · Snapshot 2026-10-05
Options may vary. Shipping and tax excluded.

View seller listing ↗

Affiliate link · PepsRadar may earn a commission from purchases through this link. Affiliate disclosure.

Named compound

MOTS-C (10 mg / 50 mg)

PSPeptides · Vendor-labeled research use only

$69.99–$189.99

Listed in stock · Snapshot 2026-10-05
Options may vary. Shipping and tax excluded.

View seller listing ↗

Affiliate link · PepsRadar may earn a commission from purchases through this link. Affiliate disclosure.

Catalog checked 2026-10-04. Seller listings retain their stated intended use. Shops covered: BioLongevity Labs, BioLongevity Supplements, American Peptides, PSPeptides. This is not a market-wide comparison. Affiliate participation does not determine evidence or editorial coverage.

Questions worth asking

  • What specific product, route, and research population does the claim refer to?
  • Does the source measure an outcome in people, or only a laboratory marker?
  • Experiments in cells and mice do not establish exercise replacement or weight-loss outcomes in people.
  • What adverse effects, uncertainty, and conflicts of interest does the original source report?

Frequently asked questions

Did this paper show that people could replace exercise?

No. That claim was not tested.

Source: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

Does mitochondrial origin mean better energy in people?

It identifies a biological origin and hypothesis. Patient fatigue, exercise capacity, and long-term outcomes need clinical measurement.

Source: The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. ↗

What does the additional research establish?

The human observations and mouse interventions answer different questions. An exercise-associated biomarker change does not show that injecting the peptide improves human fitness. The abstract does not report a randomized human MOTS-c treatment trial. Mouse physical-capacity or healthspan results cannot be relabeled as human lifespan extension.

Source: Reynolds et al. · Nature Communications · 2021 ↗

References & editorial record

Source notes checked 2026-10-04. Original PepsRadar summaries. Not reviewed by a medical professional. Topic grouping is editorial navigation, not a treatment recommendation. Video notes specify which excerpts were reviewed; no full transcripts are published.

PUT THE EVIDENCE IN CONTEXT

Research guides

For research and education only. This page does not provide medical advice, diagnosis, or treatment. Research-only listings are not instructions for human use.

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MOLECULAR ATLAS

MOTS-c

Download illustration ↓Source record ↗
MOTS-c 2d molecular structure

The cited molecular record is shown. Salts, protonation, and formulation ingredients may differ from a specific product.