细胞周期蛋白依赖激酶7
医学
前列腺癌
前列腺
免疫组织化学
细胞周期蛋白依赖激酶
前列腺切除术
生化复发
癌症
内科学
癌症研究
肿瘤科
细胞周期
细胞周期蛋白依赖激酶2
作者
F. Paulsen,Duan Kang,Finn Becker,Doris Roth,Vincent Jörg,Eva Dreyer,Marie C. Roesch,Christoph Seidel,Axel S. Merseburger,Jutta Kirfel,Verena Sailer,Anne Offermann,S. Perner
出处
期刊:Carcinogenesis
[Oxford University Press]
日期:2022-05-05
卷期号:43 (8): 779-786
被引量:3
标识
DOI:10.1093/carcin/bgac036
摘要
Abstract Cyclin-dependent kinase (CDK) 7-mediated phosphorylation of Mediator-complex subunit 1 (MED1) enhances androgen receptor (AR) activity in prostate cancer (PCa). Hyperactive AR-signalling plays a key role for the development of castration resistance. Several CDK7 inhibitors are currently under investigation in Phase I/II trials addressing solid tumours, including PCa. Aim of this study was to characterize the CDK7/phospho-(p)MED1 axis in human tissue. Immunohistochemistry was performed on 595 PCa samples including 394 primary tumour foci obtained by radical prostatectomy (RP), 64 advanced or recurrent tumours obtained by palliative transurethral resection of the prostate (pTUR), 65 lymph node metastases (LNM), 35 distant metastases (DM) and 36 benign samples. CDK7 is expressed in 79.3% of PCa tissues and protein levels are significantly higher in LNM, pTUR and DM and lower in benign tissues compared to primary tumours. CDK7 and pMED1 expression show strong positive correlation. High expression of CDK7 associated with shorter 5-year biochemical recurrence-free-survival (63.0% vs. 85.0%) and reduced survival persists when adjusted for T-Stage, nodal status, resection boundaries, grade group and pre-operative prostate-specific antigen in multivariate Cox-regression (hazard ratio 4.30; 95% CI, 1.43 to 12,40, P = 0.007). High CDK7 and pMED1 levels correlate with nuclear AR expression. CDK7 positive tumours harbour higher Ki67 expression indices and show more frequently positive ERG (ETS-related gene)-status. In conclusion, CDK7 is frequently expressed in human PCa and predicts disease recurrence after RP. Therapeutical inhibition of CDK7 might be a promising approach in treatment of advanced PCa.
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