Cited by 279Muscle Physiology and DisordersMuscle metabolism and nutritionAdipose Tissue and Metabolism

Muscle stem cells contribute to myofibres in sedentary adult mice

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Keefe, Alexandra C., Lawson, Jennifer A., Flygare, Steven D., Fox, Zachary D., Colasanto, Mary P., Mathew, Sam J., Yandell, Mark, Kardon, Gabrielle·2015·Nature Communications

Abstract

Skeletal muscle is essential for mobility, stability and whole body metabolism, and muscle loss, for instance, during sarcopenia, has profound consequences. Satellite cells (muscle stem cells) have been hypothesized, but not yet demonstrated, to contribute to muscle homeostasis and a decline in their contribution to myofibre homeostasis to play a part in sarcopenia. To test their role in muscle maintenance, we genetically labelled and ablated satellite cells in adult sedentary mice. We demonstrate via genetic lineage experiments that, even in the absence of injury, satellite cells contribute to myofibres in all adult muscles, although the extent and timing differs. However, genetic ablation experiments showed that satellite cells are not globally required to maintain myofibre cross-sectional area of uninjured adult muscle. Skeletal muscle satellite cells are muscle stem cells believed to contribute only to regenerating myofibres. Here Keefe et al. show that in adult sedentary mice satellite cells continue to fuse with uninjured myofibres, but they are not globally required for the maintenance of aging muscles.

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Authors
Keefe, A. C., Lawson, J. A., Flygare, S. D., Fox, Z. D., Colasanto, M. P., Mathew, S. J., Yandell, M., & Kardon, G.
Affiliations
University of Utah (US)
Corresponding author
Kardon, Gabrielle
Venue
Nature Communications
Published
2015-05-14
Volume
6
Issue
1
Pages
7087-7087
ISSN
2041-1723 (ISSN-L)
OpenAlex
W244232182
Cited by
279
References
56
Citations by year
2026: 14 · 2025: 11 · 2024: 31 · 2023: 34 · 2022: 20 · 2021: 27 · 2020: 31 · 2019: 25 · 2018: 27 · 2017: 32 · 2016: 14 · 2015: 13
FWCI
12.44
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Institutes of Health (NIH-R01)
  • National Institute of General Medical Sciences (R01GM088269)
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32DK007115)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (T32HD07491, R01HD053728, T32HD007491)
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 › Physiology › Adipose Tissue and Metabolism
Keywords
satellite cells, muscle stem cells, sarcopenia, muscle aging, sedentary mice
MeSH terms
Alleles, Animals, Crosses, Genetic, Homeostasis, Male, Mice, Inbred C57BL, Regeneration, Time Factors, Muscle Fibers, Skeletal, Satellite Cells, Skeletal Muscle, Green Fluorescent Proteins, Mice, PAX7 Transcription Factor, Sarcopenia

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