Cited by 75Muscle Physiology and DisordersExtracellular vesicles in diseaseMuscle metabolism and nutrition

Early satellite cell communication creates a permissive environment for long-term muscle growth

Open access
Murach, Kevin A., Peck, Bailey D., Policastro, Robert A., Vechetti, Ivan J., Van Pelt, Douglas W., Dungan, Cory M., Denes, Lance T., Fu, Xu +8 more·2021·iScience

Abstract

Using in vivo muscle stem cell (satellite cell)-specific extracellular vesicle (EV) tracking, satellite cell depletion, in vitro cell culture, and single-cell RNA sequencing, we show satellite cells communicate with other cells in skeletal muscle during mechanical overload. Early satellite cell EV communication primes the muscle milieu for proper long-term extracellular matrix (ECM) deposition and is sufficient to support sustained hypertrophy in adult mice, even in the absence of fusion to muscle fibers. Satellite cells modulate chemokine gene expression across cell types within the first few days of loading, and EV delivery of miR-206 to fibrogenic cells represses Wisp1 expression required for appropriate ECM remodeling. Late-stage communication from myogenic cells during loading is widespread but may be targeted toward endothelial cells. Satellite cells coordinate adaptation by influencing the phenotype of recipient cells, which extends our understanding of their role in muscle adaptation beyond regeneration and myonuclear donation.

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Crossref · 10.1016/j.isci.2021.102372

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  • This facilitates an explosive re-accumulation of translational capacity, a process further optimized by early, fusion-independent communication from resident satellite cells that creates a highly permissive environment for long-term growth.

    “This facilitates an explosive re-accumulation of translational capacity, a process further optimized by early, fusion-independent communication from resident satellite cells that creates a highly permissive environment for long-term growth [122,123,124].”

    From Ribosome Biogenesis as a Putative Bottleneck to Skeletal Muscle Hypertrophy: Mechanisms, Human Evidence, and Practical Modulators (2026) · cites this paper as [122]

    The Abstract and Introduction report that early, fusion-independent satellite-cell communication supports sustained muscle growth in adult mice by promoting appropriate extracellular-matrix remodeling. Our copy does not establish that this communication optimizes an explosive re-accumulation of translational capacity; the Discussion mentions protein-synthetic demands only as a possible limit on growth. (LLM, conf=0.84)

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Authors
Murach, K. A., Peck, B. D., Policastro, R. A., Vechetti, I. J., Van Pelt, D. W., Dungan, C. M., Denes, L. T., Fu, X., Brightwell, C. R., Zentner, G. E., Dupont-Versteegden, E. E., Richards, C. I., Smith, J. J., Fry, C. S., McCarthy, J. J., & Peterson, C. A.
Affiliations
  • University of Kentucky (US)
  • Indiana University Bloomington (US)
  • University of Nebraska–Lincoln (US)
  • University of Florida (US)
Corresponding author
  • McCarthy, John J.
  • Peterson, Charlotte A.
Venue
iScience
Publisher
Elsevier BV
Published
2021-04
Volume
24
Issue
4
Pages
102372
ISSN
2589-0042 (ISSN-L)
OpenAlex
W3140020746
Cited by
75
References
90
Citations by year
2026: 7 · 2025: 15 · 2024: 13 · 2023: 14 · 2022: 18 · 2021: 8
FWCI
4.16
Type
journal article
Language
en
Open access
Locations
  • iScience (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Lincoln (University of Nebraska) (submittedVersion, cc-by-nc-nd)
  • UKnowledge (University of Kentucky) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR060701, AR071753)
  • University of Kentucky
  • National Institutes of Health
  • National Institute on Aging (AG049086, AG063994)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK119619)
  • National Institute of General Medical Sciences (GM130349)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
satellite cells, extracellular vesicles, skeletal muscle hypertrophy, mechanical overload, extracellular matrix deposition, miR-206, WISP1, chemokine expression, endothelial cells, muscle adaptation, intercellular communication, myogenic cells

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