Cited by 254Muscle Physiology and DisordersMuscle metabolism and nutritionNeurogenetic and Muscular Disorders Research

The depletion of skeletal muscle satellite cells with age is concomitant with reduced capacity of single progenitors to produce reserve progeny

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Day, Kenneth, Shefer, Gabi, Shearer, Andrew, Yablonka-Reuveni, Zipora·2010·Developmental Biology

Abstract

Satellite cells are myogenic progenitors that reside on the myofiber surface and support skeletal muscle repair. We used mice in which satellite cells were detected by GFP expression driven by nestin gene regulatory elements to define age-related changes in both numbers of satellite cells that occupy hindlimb myofibers and their individual performance. We demonstrate a reduction in satellite cells per myofiber with age that is more prominent in females compared to males. Satellite cell loss also persists with age in myostatin-null mice regardless of increased muscle mass. Immunofluorescent analysis of isolated myofibers from nestin-GFP/Myf5(nLacZ/+) mice reveals a decline with age in the number of satellite cells that express detectable levels of betagal. Nestin-GFP expression typically diminishes in primary cultures of satellite cells as myogenic progeny proliferate and differentiate, but GFP subsequently reappears in the Pax7(+) reserve population. Clonal analysis of sorted GFP(+) satellite cells from hindlimb muscles shows heterogeneity in the extent of cell density and myotube formation among colonies. Reserve cells emerge primarily within high-density colonies, and the number of clones that produce reserve cells is reduced with age. Thus, satellite cell depletion with age could be attributed to a reduced capacity to generate a reserve population.

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Crossref · 10.1016/j.ydbio.2010.01.006

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  • In rodents, older mice have impaired muscle regenerative capacity due to reduced satellite cell proliferation and differentiation.

    “For example, in rodent studies, older (aged 19–25 months) compared with younger (aged 3–8 months) mice show impaired muscle regenerative capacity due to reduced satellite cell proliferation and differentiation,”
  • Muscle repair mechanisms are dysfunctional in older individuals.

    “To retain their anatomical integrity and function, muscles need continuous repair and maintenance, and some evidence exists that the repair mechanism is dysfunctional in older individuals.”
  • The regenerative deficit in older animals can be substantially reduced by exposing them to the circulation of a younger genetically identical animal in parabiosis experiments.

    “and this deficit can be substantially reduced in parabiotic experiments when older animals are exposed, by cross-transfusion of blood, to the circulation of a genetically identical younger animal.29-31”
  • Constitutively active satellite cells cause precocious differentiation, further reducing the satellite cell pool and regenerative capacity of muscle.

    “Constitutively active satellite cells also cause precocious differentiation (i.e., premature and excessive differentiation), further reducing the satellite cell pool and regenerative capacity of muscle [132,133].”
  • There are particular muscle wasting conditions where satellite cells are constitutively active as inflammation is elevated, impairing their ability to self-renew.

    “This is noteworthy as there are particular muscle wasting conditions where satellite cells are constitutively active as inflammation is elevated, thus impairing their ability to self-renew [132,133].”

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Authors
Day, K., Shefer, G., Shearer, A., & Yablonka-Reuveni, Z.
Affiliations
  • University of Washington (US)
  • Tel Aviv University (IL)
Venue
Developmental Biology
Publisher
Elsevier BV
Published
2010-04
Volume
340
Issue
2
Pages
330-343
ISSN
0012-1606 (ISSN-L)
OpenAlex
W2065486527
Cited by
254
References
70
Citations by year
2026: 10 · 2025: 13 · 2024: 12 · 2023: 13 · 2022: 17 · 2021: 24 · 2020: 19 · 2019: 11 · 2018: 12 · 2017: 10 · 2016: 11 · 2015: 18 · 2014: 18 · 2013: 20 · 2012: 23
FWCI
8.47
Type
journal article
Language
en
Open access
Locations
  • Developmental Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (RO1 AG021566)
  • Genetic Approaches to Aging Training Program (T32 AG000057)
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 › Genetics › Neurogenetic and Muscular Disorders Research
Keywords
skeletal muscle satellite cells, aging, myogenic progenitor cells, Pax7, clonal analysis, myofiber regeneration, sex differences, myostatin, myotube formation, muscle repair
MeSH terms
Aging, Animals, beta-Galactosidase, Cell Separation, Cells, Cultured, Clone Cells, Female, Fluorescent Dyes, Heterozygote, Immunohistochemistry, Indoles, Intermediate Filament Proteins, Male, Mice, Inbred C57BL, Mice, Transgenic, Nerve Tissue Proteins, Stem Cells, Cohort Studies, Mice, Knockout, Muscle, Skeletal, Transgenes, Fluorescent Antibody Technique, Indirect, Satellite Cells, Skeletal Muscle, Green Fluorescent Proteins, Mice, PAX7 Transcription Factor, Nestin

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