Abstract
Among the three isoforms encoded by Rtn4, Nogo-A has been intensely investigated as a central nervous system inhibitor. Although Nogo-A expression is increased in muscles of patients with amyotrophic lateral sclerosis, its role in muscle homeostasis and regeneration is not well elucidated. In this study, we discovered a significant increase in Nogo-A expression in various muscle-related pathological conditions. Nogo−/− mice displayed dystrophic muscle structure, dysregulated muscle regeneration following injury, and altered gene expression involving lipid storage and muscle cell differentiation. We hypothesized that increased Nogo-A levels might regulate muscle regeneration. Differentiating myoblasts exhibited Nogo-A upregulation and silencing Nogo-A abrogated myoblast differentiation. Nogo-A interacted with filamin-C, suggesting a role for Nogo-A in cytoskeletal arrangement during myogenesis. In conclusion, Nogo-A maintains muscle homeostasis and integrity, and pathologically altered Nogo-A expression mediates muscle regeneration, suggesting Nogo-A as a novel target for the treatment of myopathies in clinical settings.
Original language | English |
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Article number | 1 |
Journal | Cell Death Discovery |
Volume | 7 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2021 Jun |
Bibliographical note
Funding Information:This research was supported by a grant of NRF-2017R1E1A1A01072781 from National Research Foundation of Korea and Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET) through the Agri-Bioindustry Technology Development Program, funded by the Ministry of Agriculture, Food and Rural Affairs (MAFRA) (312062-5), Republic of Korea.
Publisher Copyright:
© 2021, The Author(s).
All Science Journal Classification (ASJC) codes
- Immunology
- Cellular and Molecular Neuroscience
- Cell Biology
- Cancer Research