Elimination of Mcl-1 is required for the initiation of apoptosis following ultraviolet irradiation.
Genes Dev
; 17(12): 1475-86, 2003 Jun 15.
Article
en En
| MEDLINE
| ID: mdl-12783855
Ultraviolet (UV) irradiation of HeLa cells triggers an apoptotic response mediated by mitochondria. Biochemical analysis of this response revealed that the elimination of cytosolic inhibitors is required for mitochondrial release of cytochrome c and subsequent caspase activation. These inhibitors were found to be Mcl-1 and Bcl-xL, two antiapoptotic members of the Bcl-2 family. Following UV treatment, Mcl-1 protein synthesis is blocked, the existing pool of Mcl-1 protein is rapidly degraded by the proteasome, and cytosolic Bcl-xL translocates to the mitochondria. These events are sequential; the elimination of Mcl-1 is required for the translocation of Bcl-xL. The disappearance of Mcl-1 is also required for other mitochondrial apoptotic events including Bax translocation, cytochrome c release, and caspase activation.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Rayos Ultravioleta
/
Apoptosis
/
Proteínas de Neoplasias
Límite:
Humans
Idioma:
En
Revista:
Genes Dev
Asunto de la revista:
BIOLOGIA MOLECULAR
Año:
2003
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos