Discovery of DC_H31 as potential mutant IDH1 inhibitor through NADPH-based high throughput screening
作者:Zhe Duan、Jingqiu Liu、Liping Niu、Jun Wang、Mingqian Feng、Hua Chen、Cheng Luo
DOI:10.1016/j.bmc.2019.05.040
日期:2019.8
inhibitors target mutant IDH1. Here, through in-house developed enzymatic assay-based high throughput screening platform, we discovered DC_H31 as a novel IDH1-R132H/C inhibitor, with the IC50 value of 0.41 μmol/L and 2.7 μmol/L respectively. In addition, saturable SPR binding assay indicated that DC_H31 bound to IDH1-R132H/C due to specific interaction. Further computational docking studies and structure-activity
IDH1突变是IDH突变神经胶质瘤和白血病发展中的早期事件,并且与分子过程的各种调节有关。IDH1中活性位点的突变可能导致高水平的2-HG和细胞分化的抑制,而这些变化可以被靶向IDH1的分子抑制剂逆转。在这里,通过内部开发的基于酶促测定的高通量筛选平台,我们发现DC_H31是一种新型的IDH1-R132H / C抑制剂,其IC50值分别为0.41μmol/ L和2.7μmol/ L。此外,饱和SPR结合测定表明DC_H31由于特异性相互作用而与IDH1-R132H / C结合。进一步的计算对接研究和结构-活性关系(SAR)表明,DC_H31可能占据IDH1-R132H同型二聚体的两个单体之间的变构口袋,这说明了它的抑制能力。可以得出结论,DC_H31通过抑制变构机制起作用。在细胞水平上,DC_H31可以抑制HT1080细胞中的细胞增殖,促进细胞分化并以剂量依赖性方式减少2-HG的产生。两者