Cited by 851Muscle Physiology and DisordersMesenchymal stem cell researchNeurogenesis and neuroplasticity mechanisms

The aged niche disrupts muscle stem cell quiescence

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Chakkalakal, Joe V., Jones, Kieran M., Basson, M. Albert, Brack, Andrew S.·2012·Nature

Abstract

The niche is a conserved regulator of stem cell quiescence and function. During ageing, stem cell function declines. To what extent and by what means age-related changes within the niche contribute to this phenomenon are unknown. Here we demonstrate that the aged muscle stem cell niche, the muscle fibre, expresses Fgf2 under homeostatic conditions, driving a subset of satellite cells to break quiescence and lose their self-renewing capacity. We show in mice that relatively dormant aged satellite cells robustly express sprouty 1 (Spry1), an inhibitor of fibroblast growth factor (FGF) signalling. Increasing FGF signalling in aged satellite cells under homeostatic conditions by removing Spry1 results in the loss of quiescence, satellite cell depletion and diminished regenerative capacity. Conversely, reducing niche-derived FGF activity through inhibition of Fgfr1 signalling or overexpression of Spry1 in satellite cells prevents their depletion. These experiments identify an age-dependent change in the stem cell niche that directly influences stem cell quiescence and function.

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  • In aged muscle, stronger FGF2 signaling in the stem cell niche causes satellite cells to leave quiescence and impairs muscle regeneration.

    “In a similar vein, increased fibroblast growth factor 2 (FGF2) signaling in the aged muscle stem cell niche also drives loss of quiescence in satellite cells, leading to impaired muscle regenerative capacity132.”
  • These two changes help explain why satellite cells become less responsive in older animals.

    “Both of these alterations contribute to acquired loss of satellite cell responsiveness in older animals.”
  • Advancing age is associated with loss of skeletal muscle regenerative potential.

    “Advancing age is associated with a loss of regenerative potential.”
  • The age-related loss of regenerative potential is partly due to reduced satellite cell content in old mice and humans but primarily driven by impaired activation and proliferation in response to damage-inducing stimuli.

    “This is partly due to reduced satellite cell content in old mice (20–24-months) (Brack et al., 2007; Chakkalakal et al., 2012) and humans (Carlson et al., 2009) but is primarily driven by impaired activation and proliferation in response to damage-inducing stimuli.”
  • Other stem cell subpopulations lose quiescence and become abnormally activated, particularly in blood and muscle.

    “Other stem cell subpopulations lose quiescence and become abnormally activated, particularly in blood and muscle12,35,44.”

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Authors
Chakkalakal, J. V., Jones, K. M., Basson, M. A., & Brack, A. S.
Affiliations
  • Massachusetts General Hospital (US)
  • King's College London (GB)
  • Harvard University (US)
Corresponding author
Brack, Andrew S.
Venue
Nature
Published
2012-09-26
Volume
490
Issue
7420
Pages
355-360
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2129976097
Cited by
851
References
59
Citations by year
2026: 54 · 2025: 40 · 2024: 47 · 2023: 52 · 2022: 67 · 2021: 76 · 2020: 60 · 2019: 80 · 2018: 73 · 2017: 60 · 2016: 66 · 2015: 55 · 2014: 69 · 2013: 44 · 2012: 8
FWCI
22.61
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • Wellcome Trust (WT091475, 091475)
  • Biotechnology and Biological Sciences Research Council (BB/F017626/1)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR060868, R01AR061002)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
muscle stem cells, satellite cells, stem cell quiescence, aging, stem cell niche, FGF2, SPRY1, FGF signaling, FGFR1, self-renewal, muscle regeneration, skeletal muscle fibers
MeSH terms
Aging, Animals, Cell Count, Cell Cycle, Cell Differentiation, Flow Cytometry, Homeostasis, Membrane Proteins, Mice, Inbred C57BL, Phosphoproteins, Time Factors, Signal Transduction, Fibroblast Growth Factor 2, Cellular Senescence, Muscle, Skeletal, Muscle Cells, Satellite Cells, Skeletal Muscle, Adaptor Proteins, Signal Transducing, Cyclin-Dependent Kinase Inhibitor p27, Mice, PAX7 Transcription Factor, Stem Cell Niche

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