Design, synthesis, and anticancer activity evaluation of irreversible allosteric inhibitors of the ubiquitin-conjugating enzyme Ube2g2
作者:Chao Wang、Genbin Shi、Xinhua Ji
DOI:10.1039/c8md00320c
日期:——
ubiquitin-conjugating enzyme (E2), Ube2g2, via its RING domain and a unique region called G2BR that strongly binds to E2. The binding of G2BR to Ube2g2 allosterically enhances the binding of RING to E2, and the binding of RING triggers the departure of G2BR from E2 also in an allosteric fashion. Targeting these allosteric events, we developed a family of inhibitors that irreversibly block E2–E3 interactions
RING手指依赖性泛素连接酶(E3)gp78,被称为肿瘤自分泌运动因子受体,有助于肿瘤进展。该蛋白质与其同源泛素结合酶(E2)Ube2g2相互作用,通过它的RING域和一个独特的称为G2BR的区域,该区域与E2牢固结合。G2BR与Ube2g2的结合变构地增强了RING与E2的结合,并且RING的结合也以变构形式触发了G2BR从E2离开。针对这些变构事件,我们开发了一系列抑制剂,这些抑制剂不可逆地阻止E2-E3相互作用,从而消除gp78的致瘤作用。用NCI 60肿瘤细胞系筛选的19种化合物之一显示出出色的抗癌活性。在10μM时,它对40%的细胞系产生了超过50%的生长抑制;当浓度为100μM时,它对大多数细胞系表现出杀伤活性。