Cited by 170Muscle Physiology and DisordersMuscle metabolism and nutritionPI3K/AKT/mTOR signaling in cancer

Mechanotransduction and the regulation of mTORC1 signaling in skeletal muscle

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Hornberger, Troy A.·2011·The International Journal of Biochemistry & Cell Biology

Abstract

Mechanical stimuli play a major role in the regulation of skeletal muscle mass, and the maintenance of muscle mass contributes significantly to disease prevention and issues associated with the quality of life. Although the link between mechanical signals and the regulation of muscle mass has been recognized for decades, the mechanisms involved in converting mechanical information into the molecular events that control this process remain poorly defined. Nevertheless, our knowledge of these mechanisms is advancing and recent studies have revealed that signaling through a protein kinase called the mammalian target of rapamycin (mTOR) plays a central role in this event. In this review we will, (1) discuss the evidence which implicates mTOR in the mechanical regulation of skeletal muscle mass, (2) provide an overview of the mechanisms through which signaling by mTOR can be regulated, and (3) summarize our current knowledge of the potential mechanisms involved in the mechanical activation of mTOR signaling.

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Crossref · 10.1016/j.biocel.2011.05.007

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  • In aged muscle, cytoskeletal stiffness and nuclear lamina disorganization severely impair physical signal transmission.

    “In aged muscle, cytoskeletal stiffness and nuclear lamina disorganization severely impair physical signal transmission [107,108].”

    From Ribosome Biogenesis as a Putative Bottleneck to Skeletal Muscle Hypertrophy: Mechanisms, Human Evidence, and Practical Modulators (2026) · cites this paper as [108]

    The Introduction (page unavailable) discusses age-related muscle loss and how skeletal muscle converts mechanical tension into biochemical signals. It does not say that cytoskeletal stiffness or nuclear lamina disorganization impairs physical signal transmission in aged muscle; searches for those terms found no supporting passage. (LLM, conf=0.76)

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  1. Kubica N Bolster DR Farrell PA Kimball SR Jefferson LS Resistance exercise increases muscle protein synthesis and translation of eukaryotic initiation factor 2Bepsilon mRNA in a mammalian target of rapamycin-dependent manner J Biol Chem 2005 280 7570 7580 15591312

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Authors
Hornberger, T. A.
Affiliations
University of Wisconsin System (US)
Corresponding author
Hornberger, Troy A.
Venue
The International Journal of Biochemistry & Cell Biology
Publisher
Elsevier BV
Published
2011-09
Volume
43
Issue
9
Pages
1267-1276
ISSN
1357-2725 (ISSN-L)
OpenAlex
W2149598146
Cited by
170
References
121
Citations by year
2026: 10 · 2025: 10 · 2024: 3 · 2023: 8 · 2022: 14 · 2021: 14 · 2020: 7 · 2019: 8 · 2018: 15 · 2017: 9 · 2016: 16 · 2015: 16 · 2014: 9 · 2013: 16 · 2012: 13
FWCI
1.16
Type
journal article
Language
en
Open access
Locations
  • The International Journal of Biochemistry & Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (AR057347)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
mechanotransduction, mTORC1 signaling, skeletal muscle mass, mechanical loading, muscle hypertrophy, muscle atrophy
MeSH terms
Mechanistic Target of Rapamycin Complex 1, Amino Acids, Animals, Humans, Muscle Spindles, Organ Size, Phosphatidic Acids, Phospholipase D, Protein Binding, Proteins, Signal Transduction, Gene Expression, Muscle, Skeletal, Phosphatidylinositol 3-Kinases, Mechanotransduction, Cellular, Multiprotein Complexes, TOR Serine-Threonine Kinases

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