Cited by 65Muscle Physiology and DisordersUbiquitin and proteasome pathwaysMuscle metabolism and nutrition

Ubiquitin expression is up-regulated in human and rat skeletal muscles during aging

Cai, Dongqing, Lee, K.K.H, Li, M, Tang, M.K, Chan, K.M·2004·Archives of Biochemistry and Biophysics

Abstract

In this study, we have used two-dimensional electrophoresis, protein sequencing, immunoblotting, and immunohistochemistry to identify proteins that were differentially expressed during aging in human and rat skeletal muscles. Ubiquitin was identified. It was expressed at high levels in old fast-twitch muscles but at low levels in young fast-twitch muscles. It was also discovered that exogenous ubiquitin could suppress the growth of C2C12 cells, in vitro. The reduction in C2C12 cell growth was not attributed to an increase in apoptosis but to an inhibition in cell cycle entry. Furthermore, it was possible to induce muscles to degenerate in vivo by injecting a high dose of exogenous ubiquitin into young healthy skeletal muscles. These results suggest that hyperactivity of the ubiquitin-proteasome pathway is involved in the aging process of fast-twitch muscles. In addition, ubiquitin-dependent growth suppression in satellite cells may be associated with the poor healing potential of old skeletal muscles.

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Crossref · 10.1016/j.abb.2004.02.027

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  • Ubiquitin is greater in quadriceps muscles of older humans (70-79 years) than young adults (20-29 years).

    “ubiquitin was found to be greater in quadriceps muscles of older (70-79 yrs old) human subjects as compared to young adults (20-29 yrs old) (17).”

    From Mitochondria initiate and regulate sarcopenia (2017) · cites this paper as [17]

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Authors
Cai, D., Lee, K. K. H., Li, M., Tang, M. K., & Chan, K. M.
Affiliations
  • Jinan University (CN)
  • Chinese University of Hong Kong (HK)
Corresponding author
Cai, Dongqing
Venue
Archives of Biochemistry and Biophysics
Publisher
Elsevier BV
Published
2004-05
Volume
425
Issue
1
Pages
42-50
ISSN
0003-9861 (ISSN-L)
OpenAlex
W1991015655
Cited by
65
References
61
Citations by year
2026: 2 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 5 · 2021: 4 · 2019: 1 · 2018: 2 · 2017: 4 · 2016: 3 · 2015: 5 · 2014: 2 · 2012: 6
FWCI
1.66
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Biochemistry and Biophysics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
ubiquitin, skeletal muscle aging, fast-twitch muscle, ubiquitin-proteasome system, satellite cells, muscle degeneration, cell cycle entry, muscle healing, differentially expressed proteins
MeSH terms
Adult, Aged, Aging, Animals, Cell Cycle, Humans, Middle Aged, Electrophoresis, Gel, Two-Dimensional, Up-Regulation, Rats, Sprague-Dawley, Muscle, Skeletal, Muscle Fibers, Fast-Twitch, In Situ Nick-End Labeling, Ubiquitin, Rats

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