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Association of prostate cancer SLCO gene expression with Gleason grade and alterations following androgen deprivation therapy.
Prostate Cancer and Prostatic Diseases ( IF 4.8 ) Pub Date : 2019-03-19 , DOI: 10.1038/s41391-019-0141-6
Mazen Alsinnawi 1 , Ailin Zhang 2 , Daniella Bianchi-Frias 2 , John Burns 1 , Eunpi Cho 3 , Xiaotun Zhang 4 , Adam Sowalsky 5, 6 , Huihui Ye 7 , April E Slee 1 , Lawrence True 4 , Christopher Porter 1 , Mary-Ellen Taplin 8 , Steven Balk 5 , Peter S Nelson 2 , R Bruce Montgomery 9 , Elahe A Mostaghel 3, 9, 10
Affiliation  

BACKGROUND SLCO-encoded transporters have been associated with progression to castration-resistant prostate cancer (CRPC) after initiation of androgen deprivation therapy (ADT). Although expressed at lower levels than in CRPC tissues, SLCO-encoded transporters may also play a role in response of primary prostate cancer (PCa) to ADT and biochemical recurrence. METHODS We systematically explored expression of the 11 human SLCO genes in a large sample of untreated and ADT-treated normal prostate (NP) and primary PCa tissues, including tumors treated with neoadjuvant abiraterone. RESULTS Transporters with the most recognized role in steroid uptake in PCa, including SLCO2B1 (DHEAS) and 1B3 (testosterone), were consistently detected in primary PCa. SLCO1B3 was nearly 5-fold higher in PCa vs NP with no difference in Gleason 3 vs 4 and no change with ADT. SLCO2B1 was detected at 3-fold lower levels in PCa than NP but was nearly 7-fold higher in Gleason 4 vs Gleason 3 and increased 3-fold following ADT (p < 0.05 for all). CONCLUSIONS We observed clear differences in SLCO expression in PCa vs NP samples, in Gleason 4 vs Gleason 3 tumors, and in ADT-treated vs untreated tissues. These findings are hypothesis generating due to small sample size, but suggest that baseline and ADT-induced changes in PCa OATP expression may influence steroid uptake and response to ADT, as well as uptake and response to drugs such as abiraterone and docetaxel which are also subject to OATP-mediated transport and are now being routinely combined with ADT in the metastatic castration sensitive setting.

中文翻译:

前列腺癌 SLCO 基因表达与 Gleason 分级和雄激素剥夺治疗后改变的关联。

背景 SLCO 编码的转运蛋白与雄激素剥夺治疗 (ADT) 开始后进展为去势抵抗性前列腺癌 (CRPC) 相关。虽然表达水平低于 CRPC 组织,但 SLCO 编码的转运蛋白也可能在原发性前列腺癌 (PCa) 对 ADT 和生化复发的反应中发挥作用。方法 我们系统地研究了 11 种人类 SLCO 基因在未经治疗和经 ADT 治疗的正常前列腺 (NP) 和原发性前列腺癌组织的大样本中的表达,包括用新辅助阿比特龙治疗的肿瘤。结果 在原发性 PCa 中始终检测到在 PCa 类固醇摄取中具有最公认作用的转运蛋白,包括 SLCO2B1 (DHEAS) 和 1B3 (睾酮)。SLCO1B3 在 PCa 中比 NP 高近 5 倍,Gleason 3 和 4 没有差异,ADT 没有变化。SLCO2B1 在 PCa 中的检测水平比 NP 低 3 倍,但在 Gleason 4 中比 Gleason 3 高近 7 倍,并且在 ADT 后增加了 3 倍(所有 p < 0.05)。结论 我们观察到 PCa 与 NP 样本、Gleason 4 与 Gleason 3 肿瘤以及 ADT 治疗与未治疗组织中 SLCO 表达的明显差异。这些发现是由于样本量小而产生的假设,但表明基线和 ADT 诱导的 PCa OATP 表达变化可能影响类固醇摄取和对 ADT 的反应,以及对阿比特龙和多西他赛等药物的摄取和反应到 OATP 介导的转运,现在在转移性去势敏感环境中常规与 ADT 结合使用。SLCO2B1 在 PCa 中的检测水平比 NP 低 3 倍,但在 Gleason 4 中比 Gleason 3 高近 7 倍,并且在 ADT 后增加了 3 倍(所有 p < 0.05)。结论 我们观察到 PCa 与 NP 样本、Gleason 4 与 Gleason 3 肿瘤以及 ADT 治疗与未治疗组织中 SLCO 表达的明显差异。这些发现是由于样本量小而产生的假设,但表明基线和 ADT 诱导的 PCa OATP 表达变化可能影响类固醇摄取和对 ADT 的反应,以及对阿比特龙和多西他赛等药物的摄取和反应到 OATP 介导的转运,现在在转移性去势敏感环境中常规与 ADT 结合使用。SLCO2B1 在 PCa 中的检测水平比 NP 低 3 倍,但在 Gleason 4 中比 Gleason 3 高近 7 倍,并且在 ADT 后增加了 3 倍(所有 p < 0.05)。结论 我们观察到 PCa 与 NP 样本、Gleason 4 与 Gleason 3 肿瘤以及 ADT 治疗与未治疗组织中 SLCO 表达的明显差异。这些发现是由于样本量小而产生的假设,但表明基线和 ADT 诱导的 PCa OATP 表达变化可能影响类固醇摄取和对 ADT 的反应,以及对阿比特龙和多西他赛等药物的摄取和反应到 OATP 介导的转运,现在在转移性去势敏感环境中常规与 ADT 结合使用。
更新日期:2019-11-18
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