Cited by 15Muscle Physiology and DisordersNutrition and Health in AgingGenetics, Aging, and Longevity in Model Organisms

Deletion of Pofut1 in Mouse Skeletal Myofibers Induces Muscle Aging-Related Phenotypes in cis and in trans

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Zygmunt, Deborah A., Singhal, Neha, Kim, Mi-Lyang, Cramer, Megan L., Crowe, Kelly E., Xu, Rui, Jia, Ying, Adair, Jessica +5 more·2017·Molecular and Cellular Biology

Abstract

Sarcopenia, the loss of muscle mass and strength during normal aging, involves coordinate changes in skeletal myofibers and the cells that contact them, including satellite cells and motor neurons. Here we show that the protein O-fucosyltransferase 1 gene (Pofut1), which encodes a glycosyltransferase required for NotchR-mediated cell-cell signaling, has reduced expression in aging skeletal muscle. Moreover, premature postnatal deletion of Pofut1 in skeletal myofibers can induce aging-related phenotypes in cis within skeletal myofibers and in trans within satellite cells and within motor neurons via the neuromuscular junction. Changed phenotypes include reduced skeletal muscle size and strength, decreased myofiber size, increased slow fiber (type 1) density, increased muscle degeneration and regeneration in aged muscles, decreased satellite cell self-renewal and regenerative potential, and increased neuromuscular fragmentation and occasional denervation. Pofut1 deletion in skeletal myofibers reduced NotchR signaling in young adult muscles, but this effect was lost with age. Increasing muscle NotchR signaling also reduced muscle size. Gene expression studies point to regulation of cell cycle genes, muscle myosins, NotchR and Wnt pathway genes, and connective tissue growth factor by Pofut1 in skeletal muscle, with additional effects on α dystroglycan glycosylation.

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Crossref · 10.1128/mcb.00426-16

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  • Deletion of collagen VI or laminin-α1 (ECM components) or myofiber-specific deletion of O-fucosyltransferase 1 gene (Pofut1) impairs the self-renewal of SCs, leading to the shrinkage of the SC pool after multiple muscle injuries.

    “Deletion of collagen VI or laminin-α1 (ECM components) or myofiber-specific deletion of O-fucosyltransferase 1 gene (Pofut1) impairs the self-renewal of SCs36–38, leading to the shrinkage of the SC pool after multiple muscle injuries.”

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Authors
Zygmunt, D. A., Singhal, N., Kim, M.-L., Cramer, M. L., Crowe, K. E., Xu, R., Jia, Y., Adair, J., Martinez-Pena y Valenzuela, I., Akaaboune, M., White, P., Janssen, P. M., & Martin, P. T.
Affiliations
  • Nationwide Children's Hospital (US)
  • Department of Molecular, Cellular and Developmental Biology, University of Michigan
  • University of Michigan (US)
  • Department of Physiology and Cell Biology, The Ohio State University
Corresponding author
Martin, Paul T.
Venue
Molecular and Cellular Biology
Published
2017-05-01
Volume
37
Issue
10
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2591688689
Cited by
15
References
94
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 2
FWCI
0.89
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
HHS | National Institutes of Health (R01 AR049722)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
POFUT1, sarcopenia, muscle aging, satellite cells, motor neurons, neuromuscular junction, muscle degeneration and regeneration, muscle fiber size, connective tissue growth factor, alpha-dystroglycan glycosylation, Wnt signaling, cell cycle genes, muscle denervation
MeSH terms
Aging, Animals, Cells, Cultured, Female, Fucosyltransferases, Gene Expression Regulation, Male, Mice, Inbred C57BL, Motor Neurons, Neuromuscular Junction, Phenotype, Signal Transduction, Muscle Fibers, Skeletal, Cell Cycle Proteins, Gene Expression Profiling, Satellite Cells, Skeletal Muscle, Mice, Receptors, Notch, Sarcopenia

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