β-Catenin Regulates Primitive Streak Induction through Collaborative Interactions with SMAD2/SMAD3 and OCT4
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β-Catenin Regulates Primitive Streak Induction through Collaborative Interactions with SMAD2/SMAD3 and OCT4. / Funa, Nina Sofi Ayumi; Schachter, Karen; Lerdrup, Mads; Ekberg, Jenny; Hess, Katja; Dietrich, Nikolaj; Honore, Christian; Hansen, Klaus; Semb, Tor Henrik.
In: Cell Stem Cell, Vol. 16, No. 6, 2015, p. 639-52.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - β-Catenin Regulates Primitive Streak Induction through Collaborative Interactions with SMAD2/SMAD3 and OCT4
AU - Funa, Nina Sofi Ayumi
AU - Schachter, Karen
AU - Lerdrup, Mads
AU - Ekberg, Jenny
AU - Hess, Katja
AU - Dietrich, Nikolaj
AU - Honore, Christian
AU - Hansen, Klaus
AU - Semb, Tor Henrik
PY - 2015
Y1 - 2015
N2 - Canonical Wnt and Nodal signaling are both requiredfor induction of the primitive streak (PS), whichguides organization of the early embryo. The Wnteffector b-catenin is thought to function in theseearly lineage specification decisions via transcriptionalactivation of Nodal signaling. Here, we demonstratea broader role for b-catenin in PS formation byanalyzing its genome-wide binding in a human embryonicstem cell model of PS induction. b-cateninoccupies regulatory regions in numerous PS andneural crest genes, and direct interactions betweenb-catenin and the Nodal effectors SMAD2/SMAD3are required at these regions for PS gene activation.Furthermore, OCT4 binding in proximity to thesesites is likewise required for PS induction, suggestinga collaborative interaction between b-catenin andOCT4. Induction of neural crest genes by b-cateninis repressed by SMAD2/SMAD3, ensuring properlineage specification. This study provides mechanisticinsight into how Wnt signaling controls earlycell lineage decisions.
AB - Canonical Wnt and Nodal signaling are both requiredfor induction of the primitive streak (PS), whichguides organization of the early embryo. The Wnteffector b-catenin is thought to function in theseearly lineage specification decisions via transcriptionalactivation of Nodal signaling. Here, we demonstratea broader role for b-catenin in PS formation byanalyzing its genome-wide binding in a human embryonicstem cell model of PS induction. b-cateninoccupies regulatory regions in numerous PS andneural crest genes, and direct interactions betweenb-catenin and the Nodal effectors SMAD2/SMAD3are required at these regions for PS gene activation.Furthermore, OCT4 binding in proximity to thesesites is likewise required for PS induction, suggestinga collaborative interaction between b-catenin andOCT4. Induction of neural crest genes by b-cateninis repressed by SMAD2/SMAD3, ensuring properlineage specification. This study provides mechanisticinsight into how Wnt signaling controls earlycell lineage decisions.
U2 - 10.1016/j.stem.2015.03.008
DO - 10.1016/j.stem.2015.03.008
M3 - Journal article
C2 - 25921273
VL - 16
SP - 639
EP - 652
JO - Cell Stem Cell
JF - Cell Stem Cell
SN - 1934-5909
IS - 6
ER -
ID: 136757405