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Deprecated: Implicit conversion from float 265.2 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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The Hippo pathway effector YAP is an essential regulator of ductal progenitor patterning in the mouse submandibular gland #MMPMID28492365
Szymaniak AD; Mi R; McCarthy SE; Gower AC; Reynolds TL; Mingueneau M; Kukuruzinska M; Varelas X
eLife 2017[]; 6 (ä): ä PMID28492365show ga
Salivary glands, such as submandibular glands (SMGs), are composed of branched epithelial ductal networks that terminate in acini that together produce, transport and secrete saliva. Here, we show that the transcriptional regulator Yap, a key effector of the Hippo pathway, is required for the proper patterning and morphogenesis of SMG epithelium. Epithelial deletion of Yap in developing SMGs results in the loss of ductal structures, arising from reduced expression of the EGF family member Epiregulin, which we show is required for the expansion of Krt5/Krt14-positive ductal progenitors. We further show that epithelial deletion of the Lats1 and Lats2 genes, which encode kinases that restrict nuclear Yap localization, results in morphogenesis defects accompanied by an expansion of Krt5/Krt14-positive cells. Collectively, our data indicate that Yap-induced Epiregulin signaling promotes the identity of SMG ductal progenitors and that removal of nuclear Yap by Lats1/2-mediated signaling is critical for proper ductal maturation.DOI:http://dx.doi.org/10.7554/eLife.23499.001