Sci Rep:前列腺癌中BRCA2 的突变和紫杉醇抗性

2017-07-05 AlexYang MedSci原创

BRCA1和BRCA2基因中的变异鉴定了一部分前列腺癌病人。最近,有研究人员强调了这样的一个问题,是否BRCA1/2变异对多烯紫杉醇的化学疗法具有预测影响。多烯紫杉醇是一种广泛用于治疗患有转移的趋势难治性前列腺癌(mCRPPC)病人的药物。其中,53名利用多烯紫杉醇治疗mCRPPC的男性用来检测身体原发性肿瘤BRCA1/2变异情况。在一个亚群病人中,BRCA1/2蛋白的表达经检测作为一个潜在的BR

BRCA1和BRCA2基因中的变异鉴定了一部分前列腺癌病人。最近,有研究人员强调了这样的一个问题,是否BRCA1/2变异对多烯紫杉醇的化学疗法具有预测影响。多烯紫杉醇是一种广泛用于治疗患有转移的趋势难治性前列腺癌(mCRPPC)病人的药物。其中,53名利用多烯紫杉醇治疗mCRPPC的男性用来检测身体原发性肿瘤BRCA1/2变异情况。在一个亚群病人中,BRCA1/2蛋白的表达经检测作为一个潜在的BRCA1/2去激活替代标记。

研究结果发现,53名病人中的8名病人(15.1%)具有BRCA2缺失性的变异,且没有发现BRCA1变异。另外,具有BRCA2变异的病人对多烯紫杉醇的响应率为25%,而具有正常型BRCA2的男性对多烯紫杉醇的响应率为71.1%,并表现出显著性(p=0.019)。尽管发展为去雄抵抗性的时间在两个亚组中相似,总的生存期在具有BRCA2变异的病人亚组中显著更短。另外,研究人员并未发现BRCA1/2蛋白的表达与对紫杉醇的响应的联系。虽然BRCA2变异的存在并不能排除紫杉醇的响应,研究人员在BRCA2去激活和低响应率之间发现具有显著的相关性。最后,研究人员指出,他们的研究结果表明了对BRCA2变异病人的肿瘤检测从而了解紫杉醇抗性是需要的。

原始出处:

Cathleen Nientiedt, Martina Heller, Volker Endris et al. Mutations in BRCA2 and taxane resistance in prostate cancer. Sci Rep. 04 July 2017.

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    2018-05-05 yige2012
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    2017-08-13 yige2014
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    2017-07-07 智智灵药
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    2017-07-07 TZF0810
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    2017-07-06 184****9840

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