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Na, J.* ; Lykke-Andersen, K.* ; Torres-Padilla, M.E.* ; Zernicka-Goetz, M.*

Dishevelled proteins regulate cell adhesion in mouse blastocyst and serve to monitor changes in Wnt signaling.

Dev. Biol. 302, 40-49 (2007)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Wnt signaling is essential for the regulation of cell polarity and cell fate in the early embryogenesis of many animal species. Multiple Wnt genes and its pathway members are expressed in the mouse early embryo, raising the question whether they play any roles in preimplantation development. Dishevelled is an important transducer of divergent Wnt pathways. Here we show that three of the mouse Dishevelled proteins are not only expressed in oocytes and during preimplantation development, but also display distinct spatio-temporal localization. Interestingly, as embryos reach blastocyst stage, Dishevelled 2 becomes increasingly associated with cell membrane in trophectoderm cells, while at E4.5, Dishevelled 3 is highly enriched in the cytoplasm of ICM cells. These changes are coincident with an increase in the active form of beta-catenin, p120catenin transcription and decrease of Kaiso expression, indicating an upregulation of Wnt signaling activity before implantation. When Dishevelled-GFP fusion proteins are overexpressed in single blastomeres of the 4-cell stage embryo, the progeny of this cell show reduction in cell adhesiveness and a rounded shape at the blastocyst stage. This suggests that perturbing Dvl function interferes with cell-cell adhesion through the non-canonical Wnt pathway in blastocysts.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 2007
HGF-Berichtsjahr 0
ISSN (print) / ISBN 0012-1606
e-ISSN 0012-1606
Zeitschrift Developmental Biology
Quellenangaben Band: 302, Heft: 1, Seiten: 40-49 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Epigenetics and Stem Cells (IES)
POF Topic(s) 30204 - Cell Programming and Repair
Forschungsfeld(er) Stem Cell and Neuroscience
PSP-Element(e) G-506200-001
PubMed ID 17005174
DOI 10.1016/j.ydbio.2006.08.036
Erfassungsdatum 2007-12-31
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