Constitutively active AR-V7 plays an essential role in the development and progression of castration-resistant prostate cancer.

Constitutively active AR-V7 plays an essential role in the development and progression of castration-resistant prostate cancer.
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DOI:
10.1038/srep07654
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发表时间:
2015-01-07
期刊:
影响因子:
4.6
通讯作者:
Shi G
Shi G
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Qu Y;Dai B;Ye D;Kong Y;Chang K;Jia Z;Yang X;Zhang H;Zhu Y;Shi G

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本研究旨在探讨 AR-V7 在去势抵抗性前列腺癌 (CRPC) 发展中的作用,并确定 CRPC 组织中 AR-V7 的表达是否可以预测癌症特异性生存。我们招募了 100 名局限性前列腺癌 (PCa)(第 1 组)、104 名新诊断的转移性 PCa(第 2 组)和 46 名在我们机构接受治疗的 CRPC(第 3 组)患者。通过免疫组织化学评估 PCa 中 AR-V7 的表达。 Cox 回归模型用于评估所有协变量对队列 2 中 CRPC 发展和队列 3 中癌症特异性生存的预测作用。使用 Kaplan-Meier 方法估计 CRPC 时间和癌症特异性生存曲线。与其他两个队列相比,队列 3 中的 AR-V7 表达率显着升高 (p < 0.001)。多变量分析显示,AR-V7 是 CRPC 发展(HR = 2.627,p = 0.001)和癌症特异性生存(HR = 2.247,p = 0.033)的独立预测因素。此外,AR-V7 表达与 CRPC 患者的较短生存期相关。我们的结果表明,原发性肿瘤中的 AR-V7 蛋白水平可作为 CRPC 发展的预测标志物和 CRPC 患者的预后因素。针对 AR-V7 的治疗可能有助于预防 PCa 进展并改善 CRPC 患者的预后。
This study aimed to investigate the role of AR-V7 in development of castration-resistant prostate cancer (CRPC) and to determine whether the AR-V7 expression in CRPC tissues can predict cancer-specific survival. We enrolled 100 localized prostate cancer (PCa) (cohort 1), 104 newly diagnosed metastatic PCa (cohort 2), and 46 CRPC (cohort 3) patients treated at our institution. The expression of AR-V7 in PCa was assessed by immunohistochemistry. Cox regression models were used to evaluate the predictive role of all covariates for the development of CRPC in cohort 2 and for cancer-specific survival in cohort 3. Time to CRPC and cancer-specific survival curves were estimated using the Kaplan-Meier method. AR-V7 expression rate in cohort 3 was significantly elevated compared with other two cohorts (p < 0.001). Multivariate analysis revealed that AR-V7 was an independent predictive factor for CRPC development (HR = 2.627, p = 0.001) and for cancer specific survival (HR = 2.247, p = 0.033). Furthermore, the AR-V7 expression was associated with shorter survival in CRPC patients. Our results demonstrated protein AR-V7 levels in primary tumors can be used as a predictive marker for the development of CRPC and as a prognostic factor in CRPC patients. Therapy targeting AR-V7 may help prevent PCa progression and improve the prognosis of CRPC patients.
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