Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/121999
Título: Modulation of the ligand-independent traffic of Notch by Axin and Apc contributes to the activation of Armadillo in Drosophila
Autores/as: Muñoz Descalzo, Silvia 
Martínez Arias, Alfonso
Clasificación UNESCO: 32 Ciencias médicas
320102 Genética clínica
Palabras clave: APC
Armadillo/β-catenin
Axin
Drosophila
Ligand independent, et al.
Fecha de publicación: 2011
Publicación seriada: Development (Cambridge) 
Resumen: There is increasing evidence for close functional interactions between Wnt and Notch signalling. In many instances, these are mediated by convergence of the signalling events on common transcriptional targets, but there are other instances that cannot be accounted for in this manner. Studies in Drosophila have revealed that an activated form of Armadillo, the effector of Wnt signalling, interacts with, and is modulated by, the Notch receptor. Specifically, the ligand-independent traffic of Notch serves to set up a threshold for the amount of this form of Armadillo and therefore for Wnt signalling. In the current model of Wnt signalling, a complex assembled around Axin and Apc allows GSK3 (Shaggy) to phosphorylate Armadillo and target it for degradation. However, genetic experiments suggest that the loss of function of any of these three elements does not have the same effect as elevating the activity of β-catenin. Here, we show that Axin and Apc, but not GSK3, modulate the ligandindependent traffic of Notch. This finding helps to explain unexpected differences in the phenotypes obtained by different ways of activating Armadillo function and provides further support for the notion that Wnt and Notch signalling form a single functional module.
URI: http://hdl.handle.net/10553/121999
ISSN: 0950-1991
DOI: 10.1242/dev.061309
Fuente: Development (Cambridge) [ISSN 0950-1991], v. 138 (8), p. 1501-1506, (2011)
Colección:Artículos
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