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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Rep 2017 ; 18 (12): 2893-906 Nephropedia Template TP
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The SWI/SNF Protein PBRM1 Restrains VHL Loss-Driven Clear Cell Renal Cell Carcinoma #MMPMID28329682
Nargund AM; Pham CG; Dong Y; Wang PI; Osmangeyoglu HU; Xie Y; Aras O; Han S; Oyama T; Takeda S; Ray CE; Dong Z; Berge M; Hakimi AA; Monette S; Lekaye CL; Koutcher JA; Leslie CS; Creighton CJ; Weinhold N; Lee W; Tickoo SK; Wang Z; Cheng EH; Hsieh JJ
Cell Rep 2017[Mar]; 18 (12): 2893-906 PMID28329682show ga
PBRM1 is the second most commonly mutated gene after VHL in clear cell renal cell carcinoma (ccRCC). However, the biological consequences of PBRM1 mutations for kidney tumorigenesis are unknown. Here, we find that kidney-specific deletion of Vhl and Pbrm1, but not either gene alone, results in bilateral, multifocal, transplantable clear cell kidney cancers. PBRM1 loss amplified the transcriptional outputs of HIF1 and STAT3 incurred by Vhl deficiency. Analysis of mouse and human ccRCC revealed convergence on mTOR activation, representing the third driver event after genetic inactivation of VHL and PBRM1. Our study reports a physiological preclinical ccRCC mouse model that recapitulates somatic mutations in human ccRCC and provides mechanistic and therapeutic insights into PBRM1 mutated subtypes of human ccRCC.