Cited by 72Muscle Physiology and DisordersMuscle metabolism and nutritionExercise and Physiological Responses

Moderate‐intensity treadmill running promotes expansion of the satellite cell pool in young and old mice

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Shefer, Gabi, Rauner, Gat, Stuelsatz, Pascal, Benayahu, Dafna, Yablonka‐Reuveni, Zipora·2013·The FEBS Journal

Abstract

Satellite cells, the myogenic progenitors located at the myofibre surface, are essential for the repair of adult skeletal muscle. There is ample evidence for an age‐linked decline in the number of satellite cells and performance in limb muscles. Hence, an effective means of activating and expanding the satellite cell pool may enhance muscle maintenance and reduce the impact of age‐associated muscle deterioration (sarcopaenia). Accordingly, in the present study, we explored the beneficial effects of endurance exercise on satellite cells in young and old mice. Animals were subjected to an 8‐week moderate‐intensity treadmill‐running approach that does not inflict apparent muscle damage (0° inclination, 11.5 m·min−1 for 30 min·day−1, 6 days·week−1). Myofibres of extensor digitorum longus muscles were then isolated from exercised and sedentary mice and used for monitoring the number of satellite cells, as well as for harvesting individual satellite cells for clonal growth assays. We specifically focused on satellite cell pools of single myofibres, with the view that daily wear of muscles probably affects individual myofibres rather than causing overall muscle damage. We found an expansion of the satellite cell pool in the exercised groups compared to the sedentary groups, with the same increase (~ 1.6‐fold) in both ages. The results of the present study are in agreement with our findings obtained using rat gastrocnemius, indicating the consistent effect of exercise on satellite cell expansion in limb muscles. The experimental paradigm established in the present study is useful for investigating satellite cell dynamics at the myofibre niche, as well as for broader investigations of the impact of physiologically and pathologically relevant factors on adult myogenesis.

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  • Muscle cells can regenerate through satellite mesenchymal progenitor cells, but their numbers fall with age, contributing to reduced muscle function.

    “While muscle cells can regenerate through satellite mesenchymal progenitor cells, their numbers decline with age, which contributes to reduced muscle function88,89.”

    From Sarcopenic obesity in older adults: aetiology, epidemiology and treatment strategies (2018) · cites this paper as [88]

    The Introduction describes satellite cells as myogenic progenitors essential for skeletal-muscle repair and reports an age-associated decline in their numbers. It says this decline *may* contribute to muscle deterioration, rather than establishing that it does; it also calls the cells myogenic, not mesenchymal. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Aging-induced myosteatosis promotes lipotoxicity and contributes to inflammation.

    “Furthermore, aging-induced myosteatosis promotes lipotoxicity (Lptx) and contributes to inflammation [49, 50].”

    From The critical role of oxidative stress in sarcopenic obesity (2021) · cites this paper as [49]

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Authors
Shefer, G., Rauner, G., Stuelsatz, P., Benayahu, D., & Yablonka‐Reuveni, Z.
Affiliations
  • Tel Aviv University (IL)
  • University of Washington (US)
Corresponding author
  • Shefer, Gabi
  • Benayahu, Dafna
  • Yablonka‐Reuveni, Zipora
Venue
The FEBS Journal
Publisher
Wiley
Published
2013-04-12
Volume
280
Issue
17
Pages
4063-4073
ISSN
  • 1742-464X (ISSN-L)
  • 1742-4658
OpenAlex
W2048755325
Cited by
72
References
86
Citations by year
2026: 4 · 2025: 3 · 2024: 3 · 2023: 3 · 2022: 1 · 2021: 13 · 2020: 7 · 2019: 9 · 2018: 6 · 2017: 7 · 2016: 2 · 2015: 6 · 2014: 4 · 2013: 4
FWCI
2.39
Type
journal article
Language
en
Open access
Locations
  • FEBS Journal (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Israel Science Foundation
  • National Institute on Aging (AG-021566, R01AG021566)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
satellite cells, endurance exercise, sarcopenia, aging, skeletal muscle regeneration, myogenesis, extensor digitorum longus
MeSH terms
Animals, Cells, Cultured, Exercise Test, Intermediate Filament Proteins, Mice, Inbred C57BL, Mice, Transgenic, Nerve Tissue Proteins, Promoter Regions, Genetic, Running, Stem Cells, Muscle Fibers, Skeletal, Muscle Development, Satellite Cells, Skeletal Muscle, Cell Proliferation, Green Fluorescent Proteins, Mice, Nestin

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