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Nature:临床KRAS抑制剂AMG 510驱动抗肿瘤免疫

2019-11-02 海北 MedSci原创

在临床试验中,AMG 510在首批给药组中显示出抗肿瘤活性,对缺乏有效治疗方法的患者而言,是一种潜在的转化疗法。

KRAS是癌症中最常见的致癌基因,并且在肿瘤中编码关键的信号蛋白。 KRAS(G12C)突变体具有一个半胱氨酸残基,已被用于设计具有前期临床活性的共价抑制剂。

最近,研究人员对一系列抑制剂进行了优化,使用新颖的结合相互作用来增强抑制剂的效能和选择性。在这一系列化合物中,研究人员发现了AMG 510。目前为止,AMG 510是临床开发中的第一个KRAS(G12C)抑制剂。

在临床前分析中,研究人员发现,AMG 510治疗能够导致KRASG12C肿瘤的消退,并提高了化学疗法和靶向药物的抗肿瘤功效。

在具有免疫缺陷的小鼠中,用AMG 510进行治疗可产生促炎性肿瘤微环境。无论是单独使用,还是与免疫检查点抑制剂联合使用都可产生持久的治愈作用。

治愈的小鼠不再产生同基因KRASG12D的肿瘤,这提示对共享抗原的适应性免疫。

此外,在临床试验中,AMG 510在首批给药组中显示出抗肿瘤活性,对缺乏有效治疗方法的患者而言,是一种潜在的转化疗法。


原始出处:

Canon J et al. The clinical KRAS(G12C) inhibitor AMG 510 drives anti-tumour immunity. Nature, 2019; DOI: 10.1038/s41586-019-1694-1.


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    2020-04-03 jklm09
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    2019-11-04 yinhl1978
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    2019-11-04 zhouqu_8
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Amgen近日在世界肺癌大会(WCLC)上公布了一项I期研究的最新数据,该研究正在评估口服型KRAS抑制剂AMG 510治疗KRAS G12C突变的非小细胞肺癌(NSCLC)的有效性。该公司表示,在13名可评估的患者中,54%的患者在960 mg剂量下出现部分反应。

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