期刊
NATURE CHEMICAL BIOLOGY
卷 18, 期 12, 页码 1341-+出版社
NATURE PORTFOLIO
DOI: 10.1038/s41589-022-01151-y
关键词
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资金
- National Natural Science Foundation of China [21877123, 81803560]
Liquid-liquid phase separation is identified as a new mechanism of drug resistance, effectively inhibiting proliferation and tumor growth of prostate cancer cells by disrupting AR condensates.
Patients with castration-resistant prostate cancer inevitably acquire resistance to antiandrogen therapies in part because of androgen receptor (AR) mutations or splice variants enabling restored AR signaling. Here we show that ligand-activated AR can form transcriptionally active condensates. Both structured and unstructured regions of AR contribute to the effective phase separation of AR and disordered N-terminal domain plays a predominant role. AR liquid-liquid phase separation behaviors faithfully report transcriptional activity and antiandrogen efficacy. Antiandrogens can promote phase separation and transcriptional activity of AR-resistant mutants in a ligand-independent manner. We conducted a phase-separation-based phenotypic screen and identified ET516 that specifically disrupts AR condensates, effectively suppresses AR transcriptional activity and inhibits the proliferation and tumor growth of prostate cancer cells expressing AR-resistant mutants. Our results demonstrate liquid-liquid phase separation as an emerging mechanism underlying drug resistance and show that targeting phase separation may provide a feasible approach for drug discovery.
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