Cited by 818Muscle Physiology and DisordersCardiac Fibrosis and RemodelingWound Healing and Treatments

Type 2 Innate Signals Stimulate Fibro/Adipogenic Progenitors to Facilitate Muscle Regeneration

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Heredia, Jose E., Mukundan, Lata, Chen, Francis M., Mueller, Alisa A., Deo, Rahul C., Locksley, Richard M., Rando, Thomas A., Chawla, Ajay·2013·Cell

Abstract

In vertebrates, activation of innate immunity is an early response to injury, implicating it in the regenerative process. However, the mechanisms by which innate signals might regulate stem cell functionality are unknown. Here, we demonstrate that type 2 innate immunity is required for regeneration of skeletal muscle after injury. Muscle damage results in rapid recruitment of eosinophils, which secrete IL-4 to activate the regenerative actions of muscle resident fibro/adipocyte progenitors (FAPs). In FAPs, IL-4/IL-13 signaling serves as a key switch to control their fate and functions. Activation of IL-4/IL-13 signaling promotes proliferation of FAPs to support myogenesis while inhibiting their differentiation into adipocytes. Surprisingly, type 2 cytokine signaling is also required in FAPs, but not in myeloid cells, for rapid clearance of necrotic debris, a process that is necessary for timely and complete regeneration of tissues.

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Crossref · 10.1016/j.cell.2013.02.053

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  • Infiltrating eosinophils partly mediate FAP expansion by secreting IL-4, which stimulates FAP proliferation.

    “In part, the expansion of resident FAPs is mediated by the infiltration of eosinophils that secrete IL-4, which activates FAP proliferation78.”

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Authors
Heredia, J. E., Mukundan, L., Chen, F. M., Mueller, A. A., Deo, R. C., Locksley, R. M., Rando, T. A., & Chawla, A.
Affiliations
  • University of California, San Francisco (US)
  • Stanford Medicine (US)
  • QB3 (US)
  • Howard Hughes Medical Institute (US)
  • VA Palo Alto Health Care System (US)
Corresponding author
Chawla, Ajay
Venue
Cell
Publisher
Elsevier BV
Published
2013-04
Volume
153
Issue
2
Pages
376-388
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1999353686
Cited by
818
References
49
Citations by year
2026: 63 · 2025: 39 · 2024: 54 · 2023: 63 · 2022: 77 · 2021: 90 · 2020: 79 · 2019: 68 · 2018: 58 · 2017: 59 · 2016: 55 · 2015: 49 · 2014: 42 · 2013: 21
FWCI
24.91
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health (DP1OD006415, DP1OD000392)
  • National Institute on Aging (R37AG023806, R01AG023806, P01AG036695)
  • National Heart, Lung, and Blood Institute (K08HL098361, T32HL007731)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK081405, R01DK081405)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR062185, DP1AR064158)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Health Sciences › Medicine › Rehabilitation › Wound Healing and Treatments
Keywords
skeletal muscle regeneration, fibro-adipogenic progenitors, eosinophils, IL-4, IL-13 signaling, myogenesis, adipogenesis, muscle damage, stem cell fate
MeSH terms
Animals, Cobra Cardiotoxin Proteins, Eosinophils, Immunity, Innate, Receptors, Cell Surface, Regeneration, Signal Transduction, Interleukin-4, Muscle, Skeletal, Interleukin-13, Myeloid Cells, Muscle Development, STAT6 Transcription Factor, Mice, Interleukin-4 Receptor alpha Subunit

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