Sci Rep:雄激素受体基因变异在循环无细胞DNA中作为生物标记在去势抵抗性前列腺癌中的应用研究

2019-03-24 AlexYang MedSci原创

去势抵抗性前列腺癌(CRPC)的治疗范围迅速扩大。因此,当前需要开发非侵入性的生物标记来指导治疗。最近,有研究人员在血浆循环无细胞DNA(cfDNA)中建立了一种高敏感的方法来分析雄激素受体基因(AR)拷贝数(CN)和变异,并且评估CRPC患者的AR状态情况。在VCaP细胞系(AR扩增后)基因组DNA(gDNA)稀释到1%时,可以通过数字PCR(dPCR)来检测AR的扩增情况。在LNCaP细胞系(

去势抵抗性前列腺癌(CRPC)的治疗范围迅速扩大。因此,当前需要开发非侵入性的生物标记来指导治疗。最近,有研究人员在血浆循环无细胞DNA(cfDNA)中建立了一种高敏感的方法来分析雄激素受体基因(AR)拷贝数(CN)和变异,并且评估CRPC患者的AR状态情况。

在VCaP细胞系(AR扩增后)基因组DNA(gDNA)稀释到1%时,可以通过数字PCR(dPCR)来检测AR的扩增情况。在LNCaP细胞系(AR T878突变)gDNA稀释到0.1%和1.0%后,可以分别通过dPCR和靶标测序方法来检测AR的变异情况。之后,研究人员在102名患者的cfDNA中分析了AR情况。研究发现,分别在47名和25名患者中检测到了AR的扩增和变异情况。作为一种生物标记,在预处理cfDNA中的AR变异与醋酸阿比特龙不良的响应相关,而与恩杂鲁胺无关。在41名患者的连续cfDNA分析中,大多数患者的基线AR变异在有效的治疗下减少,而一些患者的疾病仍旧存在恶化情况。

最后,研究人员指出,cfDNA中分析AR在治疗CRPC患者中是可行的并且信息丰富的方法。cfDNA也许可以成为CRPC精准医疗中有用的生物标记。

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    2020-02-24 yige2012
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