Abstract
Recently, the important role of silent mating type information regulation 2 homolog 1 (SIRT1) and deleted in breast cancer 1 (DBC1) in human cancer has been extensively studied and their role has been closely related with the control of P53 and androgen receptor (AR) functions. However, their role in clear cell renal cell carcinoma (CRCC) is still unknown. We evaluated the expression of SIRT1, P53, acetylated-P53, DBC1 and AR and their prognostic significance in 200 CRCC patients. The expression of SIRT1, P53, DBC1, and AR significantly correlated with each other and all of them predicted shorter overall survival (OS), relapse-free survival (RFS), and cancer-specific survival (CSS). In contrast, the expression of acetylated-P53 predicted favourable OS, RFS, and CSS. Combined expression pattern of acetylated-P53 and P53 (Ac-P53/P53) also closely correlated with survival of CRCC patients. Multivariate analysis revealed DBC1, acetylated-P53, and Ac-P53/P53 expression as independent prognostic indicators for OS and RFS, and Ac-P53 expression as an independent prognostic indicator for CSS. This study demonstrates that the acetylation status of P53 and the expression of SIRT1, DBC1, and AR could be new prognostic indicators for CRCC and suggest that SIRT1-P53 and DBC1-AR related pathways could be new therapeutic targets for the treatment of CRCC.
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