Synthesis, cytotoxicity and structure-activity relationship of indolizinoquinolinedione derivatives as DNA topoisomerase IB catalytic inhibitors
作者:Qian Yu、Hui Yang、Teng-Wei Zhu、Le-Mao Yu、Jian-Wen Chen、Lian-Quan Gu、Zhi-Shu Huang、Lin-Kun An
DOI:10.1016/j.ejmech.2018.04.040
日期:2018.5
a base to develop novel DNA topoisomerase IB (TOP1) catalytic inhibitors. In this work, twenty-three novel indolizinoquinolinedione derivatives were synthesized. TOP1-mediated relaxation, nicking and unwinding assays revealed that three fluorinated derivatives 26, 28 and 29, and one N,N-trans derivative 46 act as TOP1 catalytic inhibitors with higher TOP1 inhibition (++++) than camptothecin (+++) and
我们以前的研究表明,吲哚izinoquinolinedione支架是开发新型DNA拓扑异构酶IB(TOP1)催化抑制剂的基础。在这项工作中,合成了二十三种新颖的吲哚并喹啉二酮衍生物。TOP1介导的弛豫,切刻和展开实验表明,三种氟化衍生物26、28和29和一种N,N-反式衍生物46充当TOP1催化抑制剂,其TOP1抑制作用(++++)比喜树碱(+++ ),并且没有TOP1介导的放松效果。针对五种人类癌细胞系的MTT分析显示,GIRF值在纳摩尔范围内,CCRF-CEM细胞的最高细胞毒性为20,A549和DU-145细胞为25,HCT116细胞为26,Huh7细胞为33。耐药细胞分析表明,化合物26可能主要作用于细胞中的TOP1,而Pgp底物较少。流式细胞仪分析表明,化合物26、28和29可以明显诱导HCT116细胞凋亡。此外,分析了吲哚并喹啉二酮衍生物的构效关系(SAR)。