NEDD4-1 deficiency impairs satellite cell function during skeletal muscle regeneration
Biol. Res
;
56: 21-21, 2023. ilus, graf
Artículo
en Inglés
| LILACS
| ID: biblio-1513734
ABSTRACT
BACKGROUND: Satellite cells are tissue-specific stem cells primarily responsible for the regenerative capacity of skeletal muscle. Satellite cell function and maintenance are regulated by extrinsic and intrinsic mechanisms, including the ubiquitin-proteasome system, which is key for maintaining protein homeostasis. In this context, it has been shown that ubiquitin-ligase NEDD4-1 targets the transcription factor PAX7 for proteasome-dependent degradation, promoting muscle differentiation in vitro. Nonetheless, whether NEDD4-1 is required for satellite cell function in regenerating muscle remains to be determined. RESULTS: Using conditional gene ablation, we show that NEDD4-1 loss, specifically in the satellite cell population, impairs muscle regeneration resulting in a significant reduction of whole-muscle size. At the cellular level, NEDD4-1-null muscle progenitors exhibit a significant decrease in the ability to proliferate and differentiate, contributing to the formation of myofibers with reduced diameter. CONCLUSIONS: These results indicate that NEDD4-1 expression is critical for proper muscle regeneration in vivo and suggest that it may control satellite cell function at multiple levels.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Músculo Esquelético
/
Complejo de la Endopetidasa Proteasomal
Idioma:
Inglés
Revista:
Biol. Res
Asunto de la revista:
Biologia
Año:
2023
Tipo del documento:
Artículo
País de afiliación:
Chile
Institución/País de afiliación:
Pontificia Universidad Católica de Chile/CL
/
Universidad Andres Bello/CL
Similares
MEDLINE
...
LILACS
LIS