Sorting nexin 27 interacts with Fzd7 and mediates Wnt signalling

SNX27 is the only sorting nexin (SNX) that contains a PDZ domain, which interacts with PDZ-binding motif of target proteins to regulate the trafficking of these proteins. We here showed that SNX27 interacts with Frizzled (Fzd) receptors via PDZ domain interaction. Immunofluorescence microscopy revea...

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Detalles Bibliográficos
Autores principales: Sun, Lixiang, Hu, Xiuyong, Chen, Wanming, He, Wei, Zhang, Zhiming, Wang, Tuanlao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Portland Press Ltd. 2016
Materias:
Original Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4748333/
https://www.ncbi.nlm.nih.gov/pubmed/26744382
http://dx.doi.org/10.1042/BSR20150205
Descripción
Sumario:SNX27 is the only sorting nexin (SNX) that contains a PDZ domain, which interacts with PDZ-binding motif of target proteins to regulate the trafficking of these proteins. We here showed that SNX27 interacts with Frizzled (Fzd) receptors via PDZ domain interaction. Immunofluorescence microscopy revealed that Fzd7 can be internalized and associate with SNX27-containing endosomal membrane. In addition, SNX27 enhances the endocytosis of Fzd7 and promotes the degradation of Fzd7. Further examination demonstrated that SNX27 inhibits the Wnt regulated transcription activity of TCF/LEF. Our results suggested that SNX27 interacts with Frizzled receptors to regulate the endocytosis and stability of Fzds, and consequently mediates canonical Wnt signalling.

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