Activation of ß-catenin in mesenchymal progenitors leads to muscle mass loss.
Dev Cell
; 58(6): 489-505.e7, 2023 03 27.
Article
en En
| MEDLINE
| ID: mdl-36898377
Loss of muscle mass is a common manifestation of chronic disease. We find the canonical Wnt pathway to be activated in mesenchymal progenitors (MPs) from cancer-induced cachectic mouse muscle. Next, we induce ß-catenin transcriptional activity in murine MPs. As a result, we observe expansion of MPs in the absence of tissue damage, as well as rapid loss of muscle mass. Because MPs are present throughout the organism, we use spatially restricted CRE activation and show that the induction of tissue-resident MP activation is sufficient to induce muscle atrophy. We further identify increased expression of stromal NOGGIN and ACTIVIN-A as key drivers of atrophic processes in myofibers, and we verify their expression by MPs in cachectic muscle. Finally, we show that blocking ACTIVIN-A rescues the mass loss phenotype triggered by ß-catenin activation in MPs, confirming its key functional role and strengthening the rationale for targeting this pathway in chronic disease.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Beta Catenina
/
Vía de Señalización Wnt
Límite:
Animals
Idioma:
En
Revista:
Dev Cell
Asunto de la revista:
EMBRIOLOGIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
Canadá
Pais de publicación:
Estados Unidos