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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cancer+Cell 2014 ; 25 (6): 831-45 Nephropedia Template TP
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Hippo-Independent Activation of YAP by the GNAQ Uveal Melanoma Oncogene through a Trio-regulated Rho GTPase Signaling Circuitry #MMPMID24882515
Cancer Cell 2014[Jun]; 25 (6): 831-45 PMID24882515show ga
Mutually exclusive activating mutations in the GNAQ and GNA11 oncogenes, encoding heterotrimeric G?q family members, have been identified in ~83% and ~6% of uveal and skin melanomas, respectively. However, the molecular events underlying these GNAQ-driven malignancies are not yet defined, thus limiting the ability to develop cancer-targeted therapies. Here, we focused on the transcriptional co-activator YAP, a critical component of the Hippo signaling pathway that controls organ size. We found that G?q stimulates YAP through a Trio-Rho/Rac signaling circuitry promoting actin polymerization, independently of PLC? and the canonical Hippo pathway. Furthermore, we show that G?q promotes the YAP-dependent growth of uveal melanoma cells, thereby identifying YAP as a suitable therapeutic target in uveal melanoma, the first described GNAQ/GNA11-initiated human malignancy.