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PMID: 17170140 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Developmental stage-specific biphasic roles of Wnt/beta-catenin signaling in cardiomyogenesis and hematopoiesis.

Naito AT, Shiojima I, Akazawa H, Hidaka K, Morisaki T, Kikuchi A, Komuro I

Abstract

Although Wingless (Wg)/Wnt signaling has been implicated in heart development of multiple organisms, conflicting results have been reported regarding the role of Wnt/beta-catenin pathway in cardiac myogenesis: Wg/armadillo signaling promotes heart development in Drosophila, whereas activation of Wnt/beta-catenin signaling inhibits heart formation in avians and amphibians. Using an in vitro system of mouse ES cell differentiation into cardiomyocytes, we show here that Wnt/beta-catenin signaling exhibits developmental stage-specific, biphasic, and antagonistic effects on cardiomyogenesis and hematopoiesis/vasculogenesis. Activation of the Wnt/beta-catenin pathway in the early phase during embryoid body (EB) formation enhances ES cell differentiation into cardiomyocytes while suppressing the differentiation into hematopoietic and vascular cell lineages. In contrast, activation of Wnt/beta-catenin signaling in the late phase after EB formation inhibits cardiomyocyte differentiation and enhances the expression of hematopoietic/vascular marker genes through suppression of bone morphogenetic protein signaling. Thus, Wnt/beta-catenin signaling exhibits biphasic and antagonistic effects on cardiomyogenesis and hematopoiesis/vasculogenesis, depending on the stage of development.

MeSH Terms
Animals Bone Morphogenetic Proteins/genetics Cell Differentiation Cells, Cultured Embryonic Stem Cells/cytology,metabolism Gene Expression Regulation, Developmental Hematopoiesis Humans Mice Myocytes, Cardiac/cytology,metabolism Signal Transduction Time Factors Wnt Proteins/genetics,metabolism beta Catenin/metabolism
Chemicals
Bone Morphogenetic Proteins Wnt Proteins beta Catenin
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Naito Atsuhiko T
Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
Shiojima Ichiro
Akazawa Hiroshi
Hidaka Kyoko
Morisaki Takayuki
Kikuchi Akira
Komuro Issei
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
2006-12-26
Epub
2006-00-14
Pages
19812-7
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC1750922
Subset
IM
Corrections
CommentIn
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