Regulation of the Hippo–YAP pathway by protease-activated receptors (PARs)
Open Access
- 12 September 2012
- journal article
- Published by Cold Spring Harbor Laboratory in Genes & Development
- Vol. 26 (19), 2138-2143
- https://doi.org/10.1101/gad.197582.112
Abstract
The Hippo signaling pathway plays a crucial role in tissue growth and tumorigenesis. Core components of the Hippo pathway include the MST1/2 and Lats1/2 kinases. Acting downstream from the Hippo pathway are the YAP/TAZ transcription coactivators, which are inhibited through phosphorylation by Lats. However, upstream signals that regulate the Hippo pathway have not been well delineated. Here we report that stimulation of protease-activated receptors (PARs) activates YAP/TAZ by decreasing phosphorylation and increasing nuclear localization. PAR1 acts through G12/13 and Rho GTPase to inhibit the Lats1/2 kinase. Our observations establish thrombin as a physiological signal for the Hippo pathway and implicate Hippo–YAP as a key downstream signaling branch of PAR activation.Keywords
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