Cited by 162Muscle Physiology and DisordersMesenchymal stem cell researchCongenital heart defects research

Exercise rejuvenates quiescent skeletal muscle stem cells in old mice through restoration of Cyclin D1

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Brett, Jamie O., Arjona, Marina, Ikeda, Mika, Quarta, Marco, de Morrée, Antoine, Egner, Ingrid M., Perandini, Luiz A., Ishak, Heather D. +7 more·2020·Nature Metabolism

Abstract

Aging impairs tissue repair. This is pronounced in skeletal muscle, whose regeneration by muscle stem cells (MuSCs) is robust in young adult animals but inefficient in older organisms. Despite this functional decline, old MuSCs are amenable to rejuvenation through strategies that improve the systemic milieu, such as heterochronic parabiosis. One such strategy, exercise, has long been appreciated for its benefits on healthspan, but its effects on aged stem cell function in the context of tissue regeneration are incompletely understood. Here we show that exercise in the form of voluntary wheel running accelerates muscle repair in old animals and improves old MuSC function. Through transcriptional profiling and genetic studies, we discovered that the restoration of old MuSC activation ability hinges on restoration of Cyclin D1, whose expression declines with age in MuSCs. Pharmacologic studies revealed that Cyclin D1 maintains MuSC activation capacity by repressing TGFβ signaling. Taken together, these studies demonstrate that voluntary exercise is a practicable intervention for old MuSC rejuvenation. Furthermore, this work highlights the distinct role of Cyclin D1 in stem cell quiescence.

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  • In 20-month-old mice, 3-weeks of voluntary wheel running rejuvenated satellite cell function and regenerative capacity through restoration of Cyclin D1, a mechanism that may offset senescence initiation through regulation of TGFβ-Smad3 signaling.

    “In 20-month-old mice, 3-weeks of voluntary wheel running rejuvenated satellite cell function and regenerative capacity through restoration of Cyclin D1, a mechanism that may offset senescence initiation through regulation of TGFβ-Smad3 signaling (Brett et al., 2020).”
  • Structured exercise interventions consisting of endurance training and increasing levels of habitual physical activity have been shown to promote DNA repair pathways as well as resistance to ROS and telomere erosion.

    “Notably, structured exercise interventions consisting of endurance training and increasing levels of habitual physical activity have been shown to promote DNA repair pathways as well as resistance to ROS and telomere erosion (Brett et al., 2020; Gomez-Cabrera et al., 2008; Puterman et al., 2010; Radák et al., 2002).”
  • In muscle, MuSCs exist as a heterogeneous quiescent population in adult mice, with changes in heterogeneity with ageing.

    “In muscle, MuSCs also exist as a heterogeneous quiescent population in adult mice30–33, with changes in heterogeneity with ageing32,34,35.”
  • MuSCs enter a deeper state of quiescence with ageing, reflected by slower kinetics of activation.

    “MuSCs enter a deeper state of quiescence with ageing as reflected by their slower kinetics of activation34.”
  • Transcriptional changes in old MuSCs involve metabolic pathways and genes that regulate chromatin accessibility.

    “Transcriptional changes in old MuSCs involve metabolic pathways and genes that regulate chromatin accessibility12,34,65.”

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Authors
Brett, J. O., Arjona, M., Ikeda, M., Quarta, M., de Morrée, A., Egner, I. M., Perandini, L. A., Ishak, H. D., Goshayeshi, A., Benjamin, D. I., Both, P., Rodríguez-Mateo, C., Betley, M. J., Wyss-Coray, T., & Rando, T. A.
Affiliations
  • Stanford Medicine (US)
  • VA Palo Alto Health Care System (US)
  • University of Oslo (NO)
  • Universidade de São Paulo (BR)
Corresponding author
Rando, Thomas A.
Venue
Nature Metabolism
Published
2020-04-13
Volume
2
Issue
4
Pages
307-317
ISSN
2522-5812 (ISSN-L)
OpenAlex
W3015247821
Cited by
162
References
72
Citations by year
2026: 21 · 2025: 30 · 2024: 21 · 2023: 35 · 2022: 27 · 2021: 18 · 2020: 10
FWCI
7.30
Type
journal article
Language
en
Open access
Locations
  • Nature Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Health & Human Services | NIH | National Institute on Aging (AG036695, AG023806)
  • U.S. Department of Health & Human Services | NIH | National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR062185)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
skeletal muscle stem cells, physical activity, aging, cyclin D1, TGF-beta signaling, stem cell quiescence, muscle regeneration, voluntary wheel running, heterochronic parabiosis, stem cell rejuvenation, tissue repair
MeSH terms
Animals, Cell Separation, Flow Cytometry, Physical Conditioning, Animal, Stem Cells, Cell Transplantation, Muscle, Skeletal, Cyclin D1, Mice

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