Cdk1 interplays with Oct4 to repress differentiation of embryonic stem cells into trophectoderm.
FEBS Lett
; 586(23): 4100-7, 2012 Nov 30.
Article
em En
| MEDLINE
| ID: mdl-23108051
ABSTRACT
Cdk1 plays an important role in undifferentiated ES cells, but the underlying mechanism remains unclear. This study explores how Cdk1 collaborates with Oct4 to inhibit differentiation in mouse ES cells. We show a direct interaction between Cdk1 and Oct4, whereas other Cdk members, including Cdk2 and Cdk4, fail to associate with Oct4. By immunocytochemistry we show that Cdk1 and Oct4 co-localize in ES cells. The biological function of the Cdk1-Oct4 complex was also addressed. We found that Cdk1 enhances the binding of Oct4 on the trophectoderm marker Cdx2 and promotes Cdx2 repression. This regulation is independent of Cyclins and of the kinase activity of Cdk1. Our study explains how Cdk1 and Oct4 interplay to inhibit ES cell differentiation into trophectoderm and thereby maintain stemness.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Trofoblastos
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Diferenciação Celular
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Proteína Quinase CDC2
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Fator 3 de Transcrição de Octâmero
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Células-Tronco Embrionárias
Limite:
Animals
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
China