当前位置: X-MOL 学术Proc. Natl. Acad. Sci. U.S.A. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
USP11 promotes prostate cancer progression by up-regulating AR and c-Myc activity
Proceedings of the National Academy of Sciences of the United States of America ( IF 9.4 ) Pub Date : 2024-07-25 , DOI: 10.1073/pnas.2403331121
Majid Pornour 1, 2 , Hee-Young Jeon 1, 2 , Hyunju Ryu 1, 2 , Sudeep Khadka 1, 2 , Rui Xu 1, 3 , Hegang Chen 4 , Arif Hussain 1, 2, 5 , Hung-Ming Lam 6 , Zhihao Zhuang 7 , Htoo Zarni Oo 8 , Martin Gleave 8 , Xuesen Dong 8 , Qianben Wang 9 , Christopher Barbieri 10 , Jianfei Qi 1, 2
Affiliation  

Androgen receptor (AR) is a main driver for castration-resistant prostate cancer (CRPC). c-Myc is an oncogene underlying prostate tumorigenesis. Here, we find that the deubiquitinase USP11 targets both AR and c-Myc in prostate cancer (PCa). USP11 expression was up-regulated in metastatic PCa and CRPC. USP11 knockdown (KD) significantly inhibited PCa cell growth. Our RNA-seq studies revealed AR and c-Myc as the top transcription factors altered after USP11 KD. ChIP-seq analysis showed that either USP11 KD or replacement of endogenous USP11 with a catalytic-inactive USP11 mutant significantly decreased chromatin binding by AR and c-Myc. We find that USP11 employs two mechanisms to up-regulate AR and c-Myc levels: namely, deubiquitination of AR and c-Myc proteins to increase their stability and deubiquitination of H2A-K119Ub, a repressive histone mark, on promoters of AR and c-Myc genes to increase their transcription. AR and c-Myc reexpression in USP11-KD PCa cells partly rescued cell growth defects. Thus, our studies reveal a tumor-promoting role for USP11 in aggressive PCa through upregulation of AR and c-Myc activities and support USP11 as a potential target against PCa.

中文翻译:


USP11 通过上调 AR 和 c-Myc 活性促进前列腺癌进展



雄激素受体(AR)是去势抵抗性前列腺癌(CRPC)的主要驱动因素。 c-Myc 是前列腺肿瘤发生的癌基因。在这里,我们发现去泛素酶 USP11 在前列腺癌 (PCa) 中同时靶向 AR 和 c-Myc。 USP11 表达在转移性 PCa 和 CRPC 中上调。 USP11 敲低 (KD) 显着抑制 PCa 细胞生长。我们的 RNA-seq 研究表明,AR 和 c-Myc 是 USP11 KD 后发生变化的首要转录因子。 ChIP-seq 分析表明,USP11 KD 或用催化失活的 USP11 突变体替换内源性 USP11 均显着降低 AR 和 c-Myc 的染色质结合。我们发现 USP11 采用两种机制来上调 AR 和 c-Myc 水平:即 AR 和 c-Myc 蛋白去泛素化以增加其稳定性,以及 AR 和 c-Myc 启动子上的 H2A-K119Ub(一种抑制性组蛋白标记)去泛素化。 -Myc 基因增加其转录。 USP11-KD PCa 细胞中 AR 和 c-Myc 的重新表达部分挽救了细胞生长缺陷。因此,我们的研究揭示了 USP11 通过上调 AR 和 c-Myc 活性在侵袭性 PCa 中发挥肿瘤促进作用,并支持 USP11 作为抗 PCa 的潜在靶点。
更新日期:2024-07-25
down
wechat
bug