Cited by 123Muscle Physiology and DisordersAdipose Tissue and MetabolismGenetics and Physical Performance

G protein-coupled receptor 56 regulates mechanical overload-induced muscle hypertrophy

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White, James P., Wrann, Christiane D., Rao, Rajesh R., Nair, Sreekumaran K., Jedrychowski, Mark P., You, Jae-Sung, Martínez-Redondo, Vicente, Gygi, Steven P. +6 more·2014·Proceedings of the National Academy of Sciences

Abstract

Peroxisome proliferator-activated receptor gamma coactivator 1-alpha 4 (PGC-1α4) is a protein isoform derived by alternative splicing of the PGC1α mRNA and has been shown to promote muscle hypertrophy. We show here that G protein-coupled receptor 56 (GPR56) is a transcriptional target of PGC-1α4 and is induced in humans by resistance exercise. Furthermore, the anabolic effects of PGC-1α4 in cultured murine muscle cells are dependent on GPR56 signaling, because knockdown of GPR56 attenuates PGC-1α4-induced muscle hypertrophy in vitro. Forced expression of GPR56 results in myotube hypertrophy through the expression of insulin-like growth factor 1, which is dependent on Gα12/13 signaling. A murine model of overload-induced muscle hypertrophy is associated with increased expression of both GPR56 and its ligand collagen type III, whereas genetic ablation of GPR56 expression attenuates overload-induced muscle hypertrophy and associated anabolic signaling. These data illustrate a signaling pathway through GPR56 which regulates muscle hypertrophy associated with resistance/loading-type exercise.

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Crossref · 10.1073/pnas.1417898111

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26 of 26 references verified0 citation errors · 0 not checkable

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  • PGC-1α4 is abundantly expressed in skeletal muscle and appears to play a role in the adaptive response to exercise, particularly in the setting of resistance training.

    “PGC-1α4, a transcript from the PGC-1 α gene, is abundantly expressed in skeletal muscle and appears to play a role in the adaptive response to exercise, particularly in the setting of resistance training (Ruas et al., 2012;White et al., 2014).”

    From Concurrent exercise training: do opposites distract? (2017) · cites this paper as White et al., 2014

  • The PGC1α4 splicing variant promotes the expression of IGF1 via upregulation of GPR56.

    “Mechanistically, PGC1α4 splicing variant promotes the expression of IGF1 via the upregulation of G protein-coupled receptor (GPR) 5633.”
  • GPR56 is a transcriptional target of PGC-1α4 and is induced by resistance exercise.

    “The G protein-coupled receptor 56 (GPR56) is a transcriptional target of PGC-1α4 and is induced by resistance exercise [15].”
  • Overexpression of GPR56 increases IGF-1 expression via Gα12/13 and activates mTORC1, resulting in muscle hypertrophy.

    “Overexpression of GPR56 increases IGF-1 expression via Gα12/13 and activates mTORC1, which results in muscle hypertrophy [15].”

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Authors
White, J. P., Wrann, C. D., Rao, R. R., Nair, S. K., Jedrychowski, M. P., You, J.-S., Martínez-Redondo, V., Gygi, S. P., Ruas, J. L., Hornberger, T. A., Wu, Z., Glass, D. J., Piao, X., & Spiegelman, B. M.
Affiliations
  • Harvard University (US)
  • Mayo Clinic (US)
  • University of Wisconsin–Madison (US)
  • Karolinska Institutet (SE)
  • Novartis Institutes for Biomedical Research, Cambridge, MA 02139; and
  • Boston Children's Hospital (US)
Venue
Proceedings of the National Academy of Sciences
Published
2014-10-21
Volume
111
Issue
44
Pages
15756-15761
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1977223822
Cited by
123
References
26
Citations by year
2026: 12 · 2025: 6 · 2024: 12 · 2023: 9 · 2022: 9 · 2021: 17 · 2020: 12 · 2019: 9 · 2018: 5 · 2017: 10 · 2016: 15 · 2015: 5 · 2014: 1
FWCI
4.24
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Novo Nordisk Fonden (NNF12OC1016062)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK061562, R01DK061562)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR-057347, R56AR057347, R01AR057347)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Physical Performance
Keywords
GPR56, muscle hypertrophy, mechanical overload, resistance training, insulin-like growth factor I, type III collagen, myotube hypertrophy, transcriptional regulation
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Animals, Gene Expression Regulation, Hypertrophy, Insulin-Like Growth Factor I, Male, Muscle Proteins, Physical Conditioning, Animal, Transcription Factors, Signal Transduction, Muscle Fibers, Skeletal, Collagen Type III, Receptors, G-Protein-Coupled, Mice

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