Title: Smad1 and its target gene Wif1 coordinate BMP and Wnt signaling activities to regulate fetal lung development
Authors: Xu, Bing
Chen, Cheng
Chen, Hui
Zheng, Song-Guo
Bringas, Pablo
Xu, Min
Zhou, Xianghong
Chen, Di
Umans, Lieve
Zwijsen, An ×
Shi, Wei #
Issue Date: Mar-2011
Publisher: Company of Biologists
Series Title: Development vol:138 issue:5 pages:925-935
Abstract: Bone morphogenetic protein 4 (Bmp4) is essential for lung development. To define the intracellular signaling mechanisms by
which Bmp4 regulates lung development, BMP-specific Smad1 or Smad5 was selectively knocked out in fetal mouse lung
epithelial cells. Abrogation of lung epithelial-specific Smad1, but not Smad5, resulted in retardation of lung branching
morphogenesis and reduced sacculation, accompanied by altered distal lung epithelial cell proliferation and differentiation and,
consequently, severe neonatal respiratory failure. By combining cDNA microarray with ChIP-chip analyses, Wnt inhibitory factor 1
(Wif1) was identified as a novel target gene of Smad1 in the developing mouse lung epithelial cells. Loss of Smad1 transcriptional
activation of Wif1 was associated with reduced Wif1 expression and increased Wnt/-catenin signaling activity in lung epithelia,
resulting in specific fetal lung abnormalities. This suggests a novel regulatory loop of Bmp4-Smad1-Wif1-Wnt/-catenin in
coordinating BMP and Wnt pathways to control fetal lung development.
ISSN: 0950-1991
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Developmental Signaling
Embryo and Stemcells (-)
Department of Human Genetics - miscellaneous
× corresponding author
# (joint) last author

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