Increased nuclear factor I-mediated chromatin access drives transition to androgen receptor splice variant dependence in prostate cancer.

IF 7.5 1区生物学 Q1 CELL BIOLOGY Cell reports Pub Date : 2024-12-21 DOI:10.1016/j.celrep.2024.115089

Larysa Poluben, Mannan Nouri, Jiaqian Liang, Shaoyong Chen, Andreas Varkaris, Betul Ersoy-Fazlioglu, Olga Voznesensky, Irene I Lee, Xintao Qiu, Laura Cato, Ji-Heui Seo, Matthew L Freedman, Adam G Sowalsky, Nathan A Lack, Eva Corey, Peter S Nelson, Myles Brown, Henry W Long, Joshua W Russo, Steven P Balk

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引用次数: 0

Abstract

Androgen receptor (AR) splice variants, of which ARv7 is the most common, are increased in castration-resistant prostate cancer, but the extent to which they drive AR activity is unclear. We generated a subline of VCaP cells (VCaP16) that is resistant to the AR inhibitor enzalutamide (ENZ). AR activity in VCaP16 is driven by ARv7, independently of full-length AR (ARfl), and its cistrome and transcriptome mirror those of ARfl in VCaP cells. ARv7 expression increases rapidly in response to ENZ, but there is a delay in gaining chromatin binding and transcriptional activity, which is associated with increased chromatin accessibility. AR and nuclear factor I (NFI) motifs are most enriched at more accessible sites, and NFIB/X knockdown greatly diminishes ARv7 function. These findings indicate that ARv7 can drive the AR program but that its activity is dependent on adaptations that increase chromatin accessibility to enhance its intrinsically weak chromatin binding.

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来源期刊

Cell reports CELL BIOLOGY-

CiteScore

13.80

自引率

1.10%

发文量

1305

审稿时长

77 days

期刊介绍： Cell Reports publishes high-quality research across the life sciences and focuses on new biological insight as its primary criterion for publication. The journal offers three primary article types: Reports, which are shorter single-point articles, research articles, which are longer and provide deeper mechanistic insights, and resources, which highlight significant technical advances or major informational datasets that contribute to biological advances. Reviews covering recent literature in emerging and active fields are also accepted. The Cell Reports Portfolio includes gold open-access journals that cover life, medical, and physical sciences, and its mission is to make cutting-edge research and methodologies available to a wide readership. The journal's professional in-house editors work closely with authors, reviewers, and the scientific advisory board, which consists of current and future leaders in their respective fields. The advisory board guides the scope, content, and quality of the journal, but editorial decisions are independently made by the in-house scientific editors of Cell Reports.