Cited by 103Muscle Physiology and DisordersAutophagy in Disease and TherapyMuscle metabolism and nutrition

Mouse skeletal muscle fiber-type-specific macroautophagy and muscle wasting are regulated by a Fyn/STAT3/Vps34 signaling pathway

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Yamada, Eijiro, Bastie, Claire C., Koga, Hiroshi, Wang, Yichen, Cuervo, Ana Maria, Pessin, Jeffrey E.·2012·Cell Reports

Abstract

Skeletal muscle atrophy induced by aging (sarcopenia), inactivity, and prolonged fasting states (starvation) is predominantly restricted to glycolytic type II muscle fibers and typical spares oxidative type I fibers. However, the mechanisms accounting for muscle fiber-type specificity of atrophy have remained enigmatic. In the current study, although the Fyn tyrosine kinase activated the mTORC1 signaling complex, it also induced marked atrophy of glycolytic fibers with relatively less effect on oxidative muscle fibers. This was due to inhibition of macroautophagy via an mTORC1-independent but STAT3-dependent reduction in Vps34 protein levels and decreased Vps34/p150/Beclin1/Atg14 complex 1. Physiologically, in the fed state endogenous Fyn kinase activity was increased in glycolytic but not oxidative skeletal muscle. In parallel, Y705-STAT3 phosphorylation increased with decreased Vps34 protein levels. Moreover, fed/starved regulation of Y705-STAT3 phosphorylation and Vps34 protein levels was prevented in skeletal muscle of Fyn null mice. These data demonstrate a Fyn/STAT3/Vps34 pathway that is responsible for fiber-type-specific regulation of macroautophagy and skeletal muscle atrophy.

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Crossref · 10.1016/j.celrep.2012.03.014

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  1. Malicdan MC Noguchi S Nishino I 2009 Monitoring autophagy in muscle diseases Methods Enzymol 453 379 396 19216917
  2. Saito YD Jensen AR Salgia R Posadas EM 2010 Fyn: a novel molecular target in cancer Cancer 116 1629 1637 20151426 PMC2847065

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Authors
Yamada, E., Bastie, C. C., Koga, H., Wang, Y., Cuervo, A. M., & Pessin, J. E.
Affiliations
Albert Einstein College of Medicine (US)
Corresponding author
Pessin, Jeffrey E.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2012-05
Volume
1
Issue
5
Pages
557-569
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2082905129
Cited by
103
References
52
Citations by year
2026: 3 · 2025: 4 · 2024: 11 · 2023: 7 · 2022: 9 · 2021: 5 · 2020: 9 · 2019: 7 · 2018: 7 · 2017: 7 · 2016: 13 · 2015: 6 · 2014: 1 · 2013: 13
FWCI
2.57
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Warwick Research Archive Portal (University of Warwick) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK033823, R01DK082694, R37DK033823, DK-082694, DK-020541, DK033823, P60DK020541, P30DK020541)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
skeletal muscle atrophy, muscle atrophy, macroautophagy, Fyn tyrosine kinase, STAT3 phosphorylation, Vps34, mTORC1, Beclin-1, starvation, sarcopenia
MeSH terms
Mechanistic Target of Rapamycin Complex 1, Animals, Autophagy, Disease Models, Animal, Mice, Transgenic, Muscular Atrophy, Phenotype, Proteins, Signal Transduction, Apoptosis, Muscle Fibers, Skeletal, Muscle Weakness, Multiprotein Complexes, STAT3 Transcription Factor, Proto-Oncogene Proteins c-fyn, Mice, Class III Phosphatidylinositol 3-Kinases, TOR Serine-Threonine Kinases

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