Cited by 345Muscle Physiology and DisordersNutrition and Health in AgingAdipose Tissue and Metabolism

mRNA expression signatures of human skeletal muscle atrophy identify a natural compound that increases muscle mass

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Kunkel, Steven D., Suneja, Manish, Ebert, Scott M., Bongers, Kale S., Fox, Daniel K., Malmberg, Sharon E., Alipour, Fariborz, Shields, Richard K. +1 more·2011·Cell Metabolism

Abstract

Skeletal muscle atrophy is a common and debilitating condition that lacks a pharmacologic therapy. To develop a potential therapy, we identified 63 mRNAs that were regulated by fasting in both human and mouse muscle, and 29 mRNAs that were regulated by both fasting and spinal cord injury in human muscle. We used these two unbiased mRNA expression signatures of muscle atrophy to query the Connectivity Map, which singled out ursolic acid as a compound whose signature was opposite to those of atrophy-inducing stresses. A natural compound enriched in apples, ursolic acid reduced muscle atrophy and stimulated muscle hypertrophy in mice. It did so by enhancing skeletal muscle insulin/IGF-I signaling and inhibiting atrophy-associated skeletal muscle mRNA expression. Importantly, ursolic acid's effects on muscle were accompanied by reductions in adiposity, fasting blood glucose, and plasma cholesterol and triglycerides. These findings identify a potential therapy for muscle atrophy and perhaps other metabolic diseases.

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Crossref · 10.1016/j.cmet.2011.03.020

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  • UA appeared to mediate its effects through enhancement of insulin/IGF-I signaling and a reduction in the expression of the atrophy-associated genes MuRF1 and MAFbx.

    “UA appeared to mediate its effects through enhancement of insulin/IGF-I signaling and a reduction in the expression of the atrophy-associated genes MuRF1 and MAFbx [187]”
  • It is presently unclear whether UA supplementation in humans can reproduce the anti-atrophy or pro-hypertrophic data reported previously.

    “Therefore, it is presently unclear whether UA supplementation in humans can reproduce the anti-atrophy or pro-hypertrophic data reported previously [187].”
  • 5 weeks of supplemented diet (0.27% UA) induced hypertrophy in mice.

    “whilst 5 weeks of supplemented diet (0.27% UA) induced hypertrophy [187].”
  • UA supplementation in mice (200 mg/kg via i.p. injection twice daily for 7 days) reduced muscle atrophy following denervation.

    “UA supplementation in mice (200 mg / kg via i.p. injection twice daily for 7 days) reduced muscle atrophy following denervation”
  • Ursolic acid reduces fasting- and denervation-induced muscle atrophy by inhibiting the mRNA expression of MAFbx and MuRF1 and induces skeletal muscle hypertrophy in SD rats.

    “Ursolic acid, a pentacyclic triterpenoid abundant in apples, reduces fasting- and denervation-induced muscle atrophy by inhibiting the mRNA expression of MAFbx and MuRF1 and induces skeletal muscle hypertrophy in SD rats [145].”

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Authors
Kunkel, S. D., Suneja, M., Ebert, S. M., Bongers, K. S., Fox, D. K., Malmberg, S. E., Alipour, F., Shields, R. K., & Adams, C. M.
Affiliations
University of Iowa (US)
Corresponding author
Adams, Christopher M.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2011-06
Volume
13
Issue
6
Pages
627-638
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2099582158
Cited by
345
References
35
Citations by year
2026: 15 · 2025: 17 · 2024: 18 · 2023: 22 · 2022: 23 · 2021: 36 · 2020: 24 · 2019: 35 · 2018: 26 · 2017: 24 · 2016: 25 · 2015: 27 · 2014: 16 · 2013: 19 · 2012: 16
FWCI
6.71
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Diabetes Association (1R01AR059115-01)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases
  • U.S. Department of Veterans Affairs
  • Doris Duke Charitable Foundation
  • Institute of Clinical and Translational Sciences
  • National Institutes of Health (HL007121, T32 GM073610)
  • University of Georgia Research Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
skeletal muscle atrophy, ursolic acid, muscle hypertrophy, fasting, spinal cord injury, mRNA expression signature, adiposity, metabolic disorders, natural compounds, apple
MeSH terms
Ursolic Acid, Animals, Cell Line, Fasting, Gene Expression Regulation, Hindlimb, Humans, Insulin, Insulin-Like Growth Factor I, Mice, Inbred C57BL, Muscle Denervation, Muscular Atrophy, Triterpenes, Signal Transduction, Gene Expression, Muscle, Skeletal, Muscle Fibers, Skeletal, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Mice, Muscle Strength

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