Genomics

Dataset Information

49

ROR-γ drives androgen-receptor expression and represents a therapeutic target in castration-resistant prostate cancer


ABSTRACT: The androgen receptor (AR) is overexpressed and hyperactivated in human castration-resistant prostate cancer (CRPC). However, the determinants of AR overexpression in CRPC are poorly defined. Here we show that retinoic acid receptor–related orphan receptor γ (ROR-γ) is overexpressed and amplified in metastatic CRPC tumors, and that ROR-γ drives AR expression in the tumors. ROR-γ recruits nuclear receptor coactivator 1 and 3 (NCOA1 and NCOA3, also known as SRC-1 and SRC-3) to an AR–ROR response element (RORE) to stimulate AR gene transcription. ROR-γ antagonists suppress the expression of both AR and its variant AR-V7 in prostate cancer (PCa) cell lines and tumors. ROR-γ antagonists also markedly diminish genome-wide AR binding, H3K27ac abundance and expression of the AR target gene network. Finally, ROR-γ antagonists suppressed tumor growth in multiple AR-expressing, but not AR-negative, xenograft PCa models, and they effectively sensitized CRPC tumors to enzalutamide, without overt toxicity in mice. Taken together, these results establish ROR-γ as a key player in CRPC by acting upstream of AR and as a potential therapeutic target for advanced PCa. Overall design: A total of 16 samples were analyzed in this study. The study included one cell line C4-2B. C4-2B cells were cultured in medium containing vehicle control or SR2211 (5 µM) for 24 hours, cells then were collected for ChIP seq assay

INSTRUMENT(S): Illumina HiSeq 2000 (Homo sapiens)

ORGANISM(S): Homo sapiens  

SUBMITTER: Junjian Wang  

PROVIDER: GSE72714 | GEO |

SECONDARY ACCESSION(S): PRJNA294735

REPOSITORIES: GEO

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