Development of a Brigatinib degrader (SIAIS117) as a potential treatment for ALK positive cancer resistance
作者:Ning Sun、Chaowei Ren、Ying Kong、Hui Zhong、Jinju Chen、Yan Li、Jianshui Zhang、Yuedong Zhou、Xing Qiu、Haifan Lin、Xiaoling Song、Xiaobao Yang、Biao Jiang
DOI:10.1016/j.ejmech.2020.112190
日期:2020.5
activated ALK (anaplastic lymphoma kinase) activity, which in turn leads to the development of non-small cell lung cancer and anaplastic large-cell lymphomas (ALCLs). FDA-approved ALK inhibitor drugs cause significant cancer regression. However, drug resistance eventually occurs and it becomes a big obstacle in clinic. Novel proteolysis targeting chimera (PROTAC) technology platform provides a potential
EML4-ALK和NPM-ALK融合蛋白具有组成性激活的ALK(间变性淋巴瘤激酶)活性,进而导致非小细胞肺癌和间变性大细胞淋巴瘤(ALCL)的发展。FDA批准的ALK抑制剂药物可导致明显的癌症消退。但是,最终会出现耐药性,成为临床上的一大障碍。靶向嵌合体的新型蛋白水解(PROTAC)技术平台为耐药性提供了潜在的治疗策略。在本文中,我们设计并合成了一系列基于Brigatinib和VHL-1的ALK PROTAC,并筛选了SIAIS117作为最佳降解剂,该降解剂不仅阻断SR和H2228癌细胞的生长,而且降解ALK蛋白。此外,SIAIS117在外源表达G1202R抗性ALK蛋白的293T细胞系中也显示出比Brigatinib更好的生长抑制效果。此外,它还降解了G1202R突变型ALK蛋白体外。最后,它具有潜在的抗小细胞肺癌增殖能力。因此,我们成功地产生了可以在癌症靶向治疗中克服耐药性的降解剂SIAIS117。