Role of TAZ as mediator of Wnt signaling.
Cell
; 151(7): 1443-56, 2012 Dec 21.
Article
en En
| MEDLINE
| ID: mdl-23245942
ABSTRACT
Wnt growth factors are fundamental regulators of cell fate, but how the Wnt signal is translated into biological responses is incompletely understood. Here, we report that TAZ, a biologically potent transcriptional coactivator, serves as a downstream element of the Wnt/ß-catenin cascade. This function of TAZ is independent from its well-established role as mediator of Hippo signaling. In the absence of Wnt activity, the components of the ß-catenin destruction complex--APC, Axin, and GSK3--are also required to keep TAZ at low levels. TAZ degradation depends on phosphorylated ß-catenin that bridges TAZ to its ubiquitin ligase ß-TrCP. Upon Wnt signaling, escape of ß-catenin from the destruction complex impairs TAZ degradation and leads to concomitant accumulation of ß-catenin and TAZ. At the genome-wide level, a substantial portion of Wnt transcriptional responses is mediated by TAZ. TAZ activation is a general feature of Wnt signaling and is functionally relevant to mediate Wnt biological effects.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Péptidos y Proteínas de Señalización Intracelular
/
Proteínas Adaptadoras Transductoras de Señales
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Vía de Señalización Wnt
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Cell
Año:
2012
Tipo del documento:
Article
País de afiliación:
Italia