Structure-based design, synthesis and biological testing of etoposide analog epipodophyllotoxin–N-mustard hybrid compounds designed to covalently bind to topoisomerase II and DNA
作者:Arun A. Yadav、Xing Wu、Daywin Patel、Jack C. Yalowich、Brian B. Hasinoff
DOI:10.1016/j.bmc.2014.09.014
日期:2014.11
docking a series of etoposide analog epipodophyllotoxin–N-mustard hybrid compounds were designed, synthesized and biologically characterized. These hybrids were designed to alkylate nucleophilic protein residues on topoisomerase II and thus produce inactive covalent adducts and to also alkylate DNA. The most potent hybrid had a mean GI50 in the NCI-60 cell screen 17-fold lower than etoposide. Using a variety
靶向 DNA 拓扑异构酶 II 异构体和烷基化 DNA 的药物代表了两种机制不同且临床上重要的抗癌药物。在分子建模和对接的指导下,设计、合成和生物学表征了一系列依托泊苷类似物表鬼臼毒素-N-芥末杂化化合物。这些杂交体被设计为烷基化拓扑异构酶 II 上的亲核蛋白残基,从而产生无活性的共价加合物,并且也烷基化 DNA。最强大的杂交种的平均 GI 为50在 NCI-60 细胞筛选中,比依托泊苷低 17 倍。使用各种体外和基于细胞的测定,所有测试的杂交体都显示靶向拓扑异构酶 II。比较分析表明,这些杂种的 NCI 60 细胞生长抑制谱与它们所源自的依托泊苷和 N-芥末化合物相匹配。这些结果支持这样的结论,即杂种表现出的特征与同时靶向拓扑异构酶 II 和 DNA 一致。