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Lgr4-deficient mice showed premature differentiation of ureteric bud with reduced expression of Wnt effector Lef1 and Gata3.
MedLine Citation:
PMID:  21523854     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We previously reported that Lgr4 has a critical role in the morphogenesis of kidney, but the detailed functions of Lgr4 in kidney development have not been elucidated. In contrast to Lgr4 null mice with 129Ola × C57BL/6J mixed background, C57BL/6J-backcrossed Lgr4 null mice (Lgr4(-/-) ) showed the severe phenotype of embryonic lethality and also had dilated tubules in kidneys at E16.5. Based on quantitative RT-PCR and in situ hybridization, branching morphogenesis at E15.5 in the Lgr4(-/-) was arrested earlier, and both DBA-lectin staining and immunohistochemical analysis using Aqp3 antibodies showed that the ureteric bud (UB) of Lgr4(-/-) kidneys underwent premature differentiation. Furthermore, quantitative RT-PCR and histological analysis suggested that the impaired UB differentiation was caused by down-regulation of the Wnt pathway and Gata3 in the Lgr4(-/-) kidneys. We demonstrate here that Lgr4 has a novel function for maintaining the UB in an undifferentiated state. Developmental Dynamics, 2011. © 2011 Wiley-Liss, Inc.
Authors:
Yasuaki Mohri; Kazunori Oyama; Atsushi Akamatsu; Shigeki Kato; Katsuhiko Nishimori
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-26
Journal Detail:
Title:  Developmental dynamics : an official publication of the American Association of Anatomists     Volume:  -     ISSN:  1097-0177     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9201927     Medline TA:  Dev Dyn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Wiley-Liss, Inc.
Affiliation:
Laboratory of Molecular Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.
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