Role of CK1 in GSK3beta-mediated phosphorylation and degradation of snail.

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Citation

Xu Y, Lee SH, Kim HS, Kim NH, Piao S, Park SH, Jung YS, Yook JI, Park BJ, Ha NC

Role of CK1 in GSK3beta-mediated phosphorylation and degradation of snail.

Oncogene. 2010 May 27;29(21):3124-33. doi: 10.1038/onc.2010.77. Epub 2010 Mar 22.

PubMed ID
20305697 [ View in PubMed
]
Abstract

The epithelial to mesenchymal transition (EMT) that occurs during embryonic development has begun to attract attention as a potential mechanism for tumor cell metastasis. Snail is a well-known Zn-finger transcription factor that promotes EMT by repressing E-cadherin expression. It is known that Snail is phosphorylated by GSK3beta and degraded by beta-TrCP-mediated ubiquitination. Here we described another protein kinase, CK1, whose phosphorylation of Snail is required for the subsequent GSK3beta phosphorylation. Specific inhibition or depletion of CK1varepsilon inhibits the phosphorylation and degradation of Snail and promotes cell migration, suggesting a central role of CK1varepsilon in the EMT process. Furthermore, our study uncovered distinct roles and steps of Snail phosphorylation by CK1varepsilon and GSK3beta. Taken together, we identified CK1varepsilon as a new component of the Snail-mediated EMT process, providing insight into the mechanism of human cancer metastasis.

DrugBank Data that Cites this Article

Polypeptides
NameUniProt ID
Casein kinase I isoform epsilonP49674Details