Discovery, Synthesis, and Evaluation of Oxynitidine Derivatives as Dual Inhibitors of DNA Topoisomerase IB (TOP1) and Tyrosyl-DNA Phosphodiesterase 1 (TDP1), and Potential Antitumor Agents
作者:Xiao-Ru Zhang、Hao-Wen Wang、Wen-Lin Tang、Yu Zhang、Hui Yang、De-Xuan Hu、Azhar Ravji、Christophe Marchand、Evgeny Kiselev、Kwabena Ofori-Atta、Keli Agama、Yves Pommier、Lin-Kun An
DOI:10.1021/acs.jmedchem.8b00639
日期:2018.11.21
repairing DNA lesions resulting from stalled topoisomerase IB (TOP1)–DNA covalent complex. Inhibiting TDP1 in conjunction with TOP1 inhibitors can boost the action of the latter. Herein, we report the discovery of the natural product oxynitidine scaffold as a novel chemotype for the development of TOP1 and TDP1 inhibitors. Three kinds of analogues, benzophenanthridinone, dihydrobenzophenanthridine, and benzophenanthridine
酪氨酰-DNA磷酸二酯酶1(TDP1)是最近发现的一种酶修复DNA损伤的物质,它是由停滞的拓扑异构酶IB(TOP1)-DNA共价复合物引起的。与TOP1抑制剂一起抑制TDP1可以增强后者的作用。在这里,我们报告了天然产物氧亚硝胺支架的发现,作为开发TOP1和TDP1抑制剂的新型化学型。合成了三种类似物,苯并菲啶酮,二氢苯并菲啶和苯并菲啶衍生物,并评估了其对TOP1和TDP1的抑制作用和细胞毒性。类似物19a显示出高的TOP1抑制作用(+++),并诱导细胞TOP1cc的形成和DNA损伤,从而导致癌细胞在纳摩尔浓度范围内凋亡。体内研究表明19a在HCT116异种移植模型中显示出抗肿瘤效率。41a在MCF-7细胞中表现出额外的TDP1抑制作用,IC 50值为7μM,并且与喜树碱具有协同作用。这项工作将促进发现基于天然产物的TOP1和TDP1抑制剂的未来工作。