Targeting histone H2B acetylated enhanceosomes via p300/CBP degradation in prostate cancer.

ABSTRACT: Prostate cancer is driven by oncogenic transcription factor enhanceosomes comprising chromatin and epigenetic regulators. The lysine acetyltransferases p300 and CREB-binding protein (CBP) are key cofactors that activate enhancers through histone acetylation. Here we identify p300/CBP-mediated multisite histone H2B N-terminal acetylation (H2BNTac) as a defining feature of oncogenic enhanceosomes in androgen receptor (AR)-positive prostate cancer. p300/CBP are essential for AR and ETS transcription factor ERG transcriptional activity, and their dual degradation eliminates H2BNTac and histone H3 lysine 27 acetylation at hyperactive enhancers, leading to stronger suppression of oncogenic transcription than targeting either paralog or bromodomain alone. Cytotoxicity profiling across >900 cell l

SUBMITTER: Luo J 

PROVIDER: S-EPMC12513837 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature