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Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 eLife 2017 ; 6 (ä): ä Nephropedia Template TP
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YAP is essential for mechanical force production and epithelial cell proliferation during lung branching morphogenesis #MMPMID28323616
Lin C; Yao E; Zhang K; Jiang X; Croll S; Thompson-Peer K; Chuang PT
eLife 2017[]; 6 (ä): ä PMID28323616show ga
Branching morphogenesis is a fundamental program for tissue patterning. We show that active YAP, a key mediator of Hippo signaling, is distributed throughout the murine lung epithelium and loss of epithelial YAP severely disrupts branching. Failure to branch is restricted to regions where YAP activity is removed. This suggests that YAP controls local epithelial cell properties. In support of this model, mechanical force production is compromised and cell proliferation is reduced in Yap mutant lungs. We propose that defective force generation and insufficient epithelial cell number underlie the branching defects. Through genomic analysis, we also uncovered a feedback control of pMLC levels, which is critical for mechanical force production, likely through the direct induction of multiple regulators by YAP. Our work provides a molecular pathway that could control epithelial cell properties required for proper morphogenetic movement and pattern formation.DOI:http://dx.doi.org/10.7554/eLife.21130.001