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Lickert, H.* ; Kutsch, S.* ; Kanzler, B.* ; Tamai, Y.* ; Taketo, M.M.* ; Kemler, R.*

Formation of multiple hearts in mice following deletion of beta-catenin in the embryonic endoderm.

Dev. Cell 3, 171-181 (2002)
PMC
Open Access Green as soon as Postprint is submitted to ZB.
Using Cre/loxP, we conditionally inactivated the beta-catenin gene in cells of structures that exhibit important embryonic organizer functions: the visceral endoderm, the node, the notochord, and the definitive endoderm. Mesoderm formation was not affected in the mutant embryos, but the node was missing, patterning of the head and trunk was affected, and no notochord or somites were formed. Surprisingly, deletion of beta-catenin in the definitive endoderm led to the formation of multiple hearts all along the anterior-posterior (A/P) axis of the embryo. Ectopic hearts developed in parallel with the normal heart in regions of ectopic Bmp2 expression. We provide evidence that ablation of beta-catenin in embryonic endoderm changes cell fate from endoderm to precardiac mesoderm, consistent with the existence of bipotential mesendodermal progenitors in mouse embryos.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2002
HGF-reported in Year 0
ISSN (print) / ISBN 1534-5807
e-ISSN 1878-1551
Journal Developmental Cell
Quellenangaben Volume: 3, Issue: 2, Pages: 171-181 Article Number: , Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed
Institute(s) Institute of Diabetes and Regeneration Research (IDR)
PubMed ID 12194849
Erfassungsdatum 2002-12-31
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