JMJD6 Is a Druggable Oxygenase That Regulates AR-V7 Expression in Prostate Cancer.

ABSTRACT: Endocrine resistance (EnR) in advanced prostate cancer is fatal. EnR can be mediated by androgen receptor (AR) splice variants, with AR splice variant 7 (AR-V7) arguably the most clinically important variant. In this study, we determined proteins key to generating AR-V7, validated our findings using clinical samples, and studied splicing regulatory mechanisms in prostate cancer models. Triangulation studies identified JMJD6 as a key regulator of AR-V7, as evidenced by its upregulation with in vitro EnR, its downregulation alongside AR-V7 by bromodomain inhibition, and its identification as a top hit of a targeted siRNA screen of spliceosome-related genes. JMJD6 protein levels increased (P < 0.001) with castration resistance and were associated with higher AR-V7 levels and sho

SUBMITTER: Paschalis A 

PROVIDER: S-EPMC8025710 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature