Cited by 1,690Muscle Physiology and DisordersMesenchymal stem cell researchAdipose Tissue and Metabolism

Muscle injury activates resident fibro/adipogenic progenitors that facilitate myogenesis

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Joe, Aaron W. B., Yi, Lin, Natarajan, Anuradha, Le Grand, Fabien, So, Leslie, Wang, Joy, Rudnicki, Michael A., Rossi, Fabio M. V.·2010·Nature Cell Biology

Abstract

Efficient tissue regeneration is dependent on the coordinated responses of multiple cell types. Here, we describe a new subpopulation of fibro/adipogenic progenitors (FAPs) resident in muscle tissue but arising from a distinct developmental lineage. Transplantation of purified FAPs results in the generation of ectopic white fat when delivered subcutaneously or intramuscularly in a model of fatty infiltration, but not in healthy muscle, suggesting that the environment controls their engraftment. These cells are quiescent in intact muscle but proliferate efficiently in response to damage. FAPs do not generate myofibres, but enhance the rate of differentiation of primary myogenic progenitors in co-cultivation experiments. In summary, FAPs expand upon damage to provide a transient source of pro-differentiation signals for proliferating myogenic progenitors.

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  • Normally quiescent FAPs rapidly and transiently expand after acute muscle damage to support myogenesis.

    “Under physiological conditions, FAPs remain quiescent but rapidly and transiently expand in response to acute muscle damage to facilitate myogenesis75 (Fig. 2).”
  • When FAPs and satellite cells are grown together, primary myogenic progenitors differentiate faster.

    “The presence of FAPs in the muscle is essential for proper muscle repair after injury158, and this regulatory relationship is likely to involve direct communication between FAPs and satellite cells, as co-culturing FAPs with satellite cells enhances the rate of differentiation of primary myogenic progenitors159.”

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  1. [17]Lipton B Skeletal muscle regneration in muscular dystrophy Muscle Regeneration Mauro A 31 40 Raven Press 1979

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Authors
Joe, A. W. B., Yi, L., Natarajan, A., Le Grand, F., So, L., Wang, J., Rudnicki, M. A., & Rossi, F. M. V.
Affiliations
University of British Columbia (CA)
Corresponding author
Rossi, Fabio M. V.
Venue
Nature Cell Biology
Published
2010-01-17
Volume
12
Issue
2
Pages
153-163
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1999902156
Cited by
1,690
References
45
Citations by year
2026: 119 · 2025: 105 · 2024: 145 · 2023: 120 · 2022: 146 · 2021: 136 · 2020: 136 · 2019: 126 · 2018: 96 · 2017: 97 · 2016: 96 · 2015: 85 · 2014: 75 · 2013: 77 · 2012: 59
FWCI
26.99
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Canadian Institutes of Health Research (94219_1, 94019_1, MOP-97856)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR044031)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
fibro-adipogenic progenitors, muscle damage, myogenesis, skeletal muscle regeneration, fatty infiltration, cell transplantation, cell engraftment, cell proliferation, co-culture
MeSH terms
Animals, Cell Differentiation, Cells, Cultured, Flow Cytometry, Mice, Inbred C57BL, Mice, Transgenic, Stem Cells, Adipocytes, Muscle, Skeletal, Muscle Fibers, Skeletal, Muscle Development, Myoblasts, Stem Cell Transplantation, Cell Proliferation, Mice

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