Cited by 432Muscle Physiology and DisordersNutrition and Health in AgingMuscle metabolism and nutrition

Inducible depletion of satellite cells in adult, sedentary mice impairs muscle regenerative capacity without affecting sarcopenia

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Fry, Christopher S, Lee, Jonah D, Mula, Jyothi, Kirby, Tyler J, Jackson, Janna R, Liu, Fujun, Yang, Lin, Mendias, Christopher L +3 more·2015·Nature Medicine

Abstract

A key determinant of geriatric frailty is sarcopenia, the age-associated loss of skeletal muscle mass and strength. Although the etiology of sarcopenia is unknown, the correlation during aging between the loss of activity of satellite cells, which are endogenous muscle stem cells, and impaired muscle regenerative capacity has led to the hypothesis that the loss of satellite cell activity is also a cause of sarcopenia. We tested this hypothesis in male sedentary mice by experimentally depleting satellite cells in young adult animals to a degree sufficient to impair regeneration throughout the rest of their lives. A detailed analysis of multiple muscles harvested at various time points during aging in different cohorts of these mice showed that the muscles were of normal size, despite low regenerative capacity, but did have increased fibrosis. These results suggest that lifelong reduction of satellite cells neither accelerated nor exacerbated sarcopenia and that satellite cells did not contribute to the maintenance of muscle size or fiber type composition during aging, but that their loss may contribute to age-related muscle fibrosis.

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Authors
Fry, C. S., Lee, J. D., Mula, J., Kirby, T. J., Jackson, J. R., Liu, F., Yang, L., Mendias, C. L., Dupont-Versteegden, E. E., McCarthy, J. J., & Peterson, C. A.
Affiliations
  • University of Kentucky (US)
  • University of Michigan (US)
Corresponding author
Peterson, Charlotte A
Venue
Nature Medicine
Published
2014-12-15
Volume
21
Issue
1
Pages
76-80
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2072493014
Cited by
432
References
43
Citations by year
2026: 26 · 2025: 20 · 2024: 27 · 2023: 40 · 2022: 35 · 2021: 45 · 2020: 45 · 2019: 37 · 2018: 40 · 2017: 41 · 2016: 37 · 2015: 39
FWCI
15.98
Type
journal article
Language
en
Open access
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • PubMed Central (acceptedVersion)
  • UKnowledge (University of Kentucky) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • Ellison Medical Foundation (EPD 12102)
  • National Institutes of Health (1f32ar065337-01a1, UL1TR000117)
  • National Institute on Aging (R21AG043721, R21AG034453, AG043721, AG-34453)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR065479, F32 AR065337, AR065337, R01AR060701, AR60701)
  • National Institute of Dental and Craniofacial Research (K12DE023574)
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
satellite cells, sarcopenia, muscle regeneration, muscle stem cells, skeletal muscle aging, sedentary behavior, muscle fibrosis, muscle mass, muscle fiber composition, geriatric frailty
MeSH terms
Aging, Animals, Humans, Regeneration, Muscle, Skeletal, Satellite Cells, Skeletal Muscle, Mice, Sarcopenia

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