Structure-based design, synthesis and biological testing of piperazine-linked bis-epipodophyllotoxin etoposide analogs
作者:Arun A. Yadav、Gaik-Lean Chee、Xing Wu、Daywin Patel、Jack C. Yalowich、Brian B. Hasinoff
DOI:10.1016/j.bmc.2015.04.022
日期:2015.7
epipodophyllotoxin etoposide, are a clinically important class of anticancer agents. A recently published X-ray structure of a ternary complex of etoposide, cleaved DNA and topoisomerase IIβ showed that the two intercalated etoposide molecules in the complex were separated by four DNA base pairs. Thus, using a structure-based design approach, a series of bis-epipodophyllotoxin etoposide analogs with piperazine-containing
靶向DNA拓扑异构酶II的药物,例如表鬼臼毒素依托泊苷,是临床上重要的一类抗癌药。依托泊苷,切割的DNA和拓扑异构酶IIβ的三元复合物的最近公开的X射线结构表明,该复合物中的两个插入的依托泊苷分子被四个DNA碱基对隔开。因此,使用基于结构的设计方法,将一系列具有含哌嗪连接子的双表鬼臼毒素依托泊苷类似物设计为同时结合这两个位点。假设两点结合将产生更稳定的裂解复合物和更有效的抗癌药。最有效的双-表鬼臼毒素对人红白血病K562细胞的生长抑制作用比依托泊苷高10倍,它含有一个带有8个亚甲基的连接基。在各种测定中,所有的单-和双-表鬼臼毒素都显示出有力的证据表明它们靶向拓扑异构酶II。NCI 60细胞GI的比较分析50个终点数据也与这些靶向拓扑异构酶II的化合物一致。