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XB-ART-46717
Nat Commun 2013 Jan 01;4:1542. doi: 10.1038/ncomms2543.
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Interactions between Twist and other core epithelial-mesenchymal transition factors are controlled by GSK3-mediated phosphorylation.

Lander R , Nasr T , Ochoa SD , Nordin K , Prasad MS , Labonne C .


Abstract
A subset of transcription factors classified as neural crest 'specifiers' are also core epithelial-mesenchymal transition regulatory factors, both in the neural crest and in tumour progression. The bHLH factor Twist is among the least well studied of these factors. Here we demonstrate that Twist is required for cranial neural crest formation and fate determination in Xenopus. We further show that Twist function in the neural crest is dependent upon its carboxy-terminal WR domain. The WR domain mediates physical interactions between Twist and other core epithelial-mesenchymal transition factors, including Snail1 and Snail2, which are essential for proper function. Interaction with Snail1/2, and Twist function more generally, is regulated by GSK-3-β-mediated phosphorylation of conserved sites in the WR domain. Together, these findings elucidate a mechanism for coordinated control of a group of structurally diverse factors that function as a regulatory unit in both developmental and pathological epithelial-mesenchymal transitions.

PubMed ID: 23443570
PMC ID: PMC4198179
Article link: Nat Commun
Grant support: [+]

Species referenced: Xenopus laevis
Genes referenced: gsk3b snai1 snai2 twist1

References [+] :
Ansieau, Induction of EMT by twist proteins as a collateral effect of tumor-promoting inactivation of premature senescence. 2008, Pubmed