Cited by 723Mitochondrial Function and PathologyMetabolism, Diabetes, and CancerAdipose Tissue and Metabolism

The Mitochondrial-Derived Peptide MOTS-c Promotes Metabolic Homeostasis and Reduces Obesity and Insulin Resistance

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Lee, Changhan, Zeng, Jennifer, Drew, Brian G., Sallam, Tamer, Martin-Montalvo, Alejandro, Wan, Junxiang, Kim, Su-Jeong, Mehta, Hemal +3 more·2015·Cell Metabolism

Abstract

Mitochondria are known to be functional organelles, but their role as a signaling unit is increasingly being appreciated. The identification of a short open reading frame (sORF) in the mitochondrial DNA (mtDNA) that encodes a signaling peptide, humanin, suggests the possible existence of additional sORFs in the mtDNA. Here we report a sORF within the mitochondrial 12S rRNA encoding a 16-amino-acid peptide named MOTS-c (mitochondrial open reading frame of the 12S rRNA-c) that regulates insulin sensitivity and metabolic homeostasis. Its primary target organ appears to be the skeletal muscle, and its cellular actions inhibit the folate cycle and its tethered de novo purine biosynthesis, leading to AMPK activation. MOTS-c treatment in mice prevented age-dependent and high-fat-diet-induced insulin resistance, as well as diet-induced obesity. These results suggest that mitochondria may actively regulate metabolic homeostasis at the cellular and organismal level via peptides encoded within their genome.

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Crossref · 10.1016/j.cmet.2015.02.009

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  • Recent studies have demonstrated that MOTS-c may exert protective effects against diet-induced obesity and insulin resistance by altering skeletal muscle gene expression related to metabolism and inflammation.

    “whilst recent studies have demonstrated that MOTS-c may also exert protective effects against diet-induced obesity and insulin resistance by altering skeletal muscle gene expression related to metabolism and inflammation”

    From Exercise-Induced Muscle–Fat Crosstalk: Molecular Mediators and Their Pharmacological Modulation for the Maintenance of Metabolic Flexibility in Aging (2025) · cites this paper as [117]

    The Results section on high-fat-diet treatment reports that MOTS-c prevented obesity and hyperinsulinemia in mice and affected metabolic markers in skeletal muscle. A separate Results section reports changes in genes associated with metabolism and inflammation, but those gene-expression measurements were made in HEK293 cells, not skeletal muscle. The paper therefore does not establish that altered skeletal-muscle gene expression caused the protective effects. (LLM, conf=0.91)

    Experimental — accuracy not yet measured
  • Mitochondrial-derived peptides such as MOTS-c may further promote fatigue resistance and enhance muscle strength by activating key metabolic pathways and supporting mitochondrial health.

    “Mitochondrial-derived peptides such as MOTS-c may further promote fatigue resistance and enhance muscle strength by activating key metabolic pathways and supporting mitochondrial health”

    From Exercise-Induced Muscle–Fat Crosstalk: Molecular Mediators and Their Pharmacological Modulation for the Maintenance of Metabolic Flexibility in Aging (2025) · cites this paper as [117]

    The Results section on the methionine-folate cycle reports that MOTS-c activates AMPK, and the Results section on skeletal muscle reports improved muscle insulin sensitivity in mice. Neither section establishes improved fatigue resistance or muscle strength. The Discussion section on the folate-AICAR-AMPK pathway also reports decreased mitochondrial respiration, rather than demonstrating improved mitochondrial health. No page numbers are available in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • MOTS-c is a bioactive mitochondrial-derived peptide shown to activate the AMPK pathway and modulate metabolic homeostasis.

    “The mitochondrial open reading frame of the 12S rRNA-c (MOTS-c) is a bioactive mitochondrial-derived peptide shown to activate the AMPK pathway and modulate metabolic homeostasis [193].”

    From AMPK, Mitochondrial Function, and Cardiovascular Disease (2020) · cites this paper as [193]

  • Treatment with MOTS-C in mice prevents age-dependent and high-fat diet-induced insulin resistance and obesity.

    “Interestingly, treatment with MOTS-C in mice prevent agedependent and high-fat diet induced insulin resistance and obesity indicating an important role of mitochondria in the control of fat metabolism probably producing prolongevity effects (Fuku et al., 2015; Lee et al., 2015).”
  • Treatment with MOTS-C in mice prevents age-dependent and high-fat diet induced insulin resistance and obesity, indicating an important role of mitochondria in the control of fat metabolism and probably producing prolongevity effects.

    “treatment with MOTS-C in mice prevent agedependent and high-fat diet induced insulin resistance and obesity indicating an important role of mitochondria in the control of fat metabolism probably producing prolongevity effects (Fuku et al., 2015; Lee et al., 2015).”

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Authors
Lee, C., Zeng, J., Drew, B. G., Sallam, T., Martin-Montalvo, A., Wan, J., Kim, S.-J., Mehta, H., Hevener, A. L., de Cabo, R., & Cohen, P.
Affiliations
  • University of Southern California (US)
  • University of California, Los Angeles (US)
Corresponding author
  • Lee, Changhan
  • Cohen, Pinchas
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2015-03
Volume
21
Issue
3
Pages
443-454
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2160343816
Cited by
715
References
62
Citations by year
2026: 61 · 2025: 77 · 2024: 104 · 2023: 97 · 2022: 59 · 2021: 67 · 2020: 68 · 2019: 55 · 2018: 45 · 2017: 27 · 2016: 40 · 2015: 15
FWCI
18.37
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (UL1TR000130, 7r01ag034430-05)
  • National Institute on Aging (1R01AG 034430, # R01AG034430)
  • National Institute of General Medical Sciences (R01GM090311)
  • National Institute of Diabetes and Digestive and Kidney Diseases (NIH DK063491, P30DK063491)
  • National Institute of Environmental Health Sciences (R01ES020812)
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
MOTS-c, mitochondrial peptides, 12S rRNA, small open reading frames, mitochondrial DNA, metabolic homeostasis, insulin resistance, obesity, AMPK activation, folate cycle, de novo purine synthesis, skeletal muscle, mitochondrial signaling
MeSH terms
Animals, Cell Line, DNA, Mitochondrial, HeLa Cells, Homeostasis, Humans, Insulin, Insulin Resistance, Male, Mice, Inbred C57BL, Mice, Inbred ICR, Mitochondria, Obesity, Peptides, Signal Transduction, Muscle, Skeletal, Cell Line, Tumor, Mice, AMP-Activated Protein Kinases, HEK293 Cells, Diet, High-Fat

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