3-(Benzo[<i>d</i>]thiazol-2-yl)-4-aminoquinoline derivatives as novel scaffold topoisomerase I inhibitor <i>via</i> DNA intercalation: design, synthesis, and antitumor activities
作者:Jing-Mei Yuan、Nan-Ying Chen、Hao-Ran Liao、Guo-Hai Zhang、Xiao-Juan Li、Zi-Yu Gu、Cheng-Xue Pan、Dong-Liang Mo、Gui-Fa Su
DOI:10.1039/c9nj05846j
日期:——
Twenty-seven 3-(benzo[d]thiazol-2-yl)-4-aminoquinoline derivatives have been designed and synthesized as topoisomerase I inhibitors. The in vitro anti-proliferation evaluation against four human cancer cell lines (MGC-803, HepG-2, T24, and NCI-H460) and one normal cell line (HL-7702) indicated that most of them exhibited potent cytotoxicity. Among them, 5a was identified as the most promising candidate
已经设计并合成了二十七个3-(苯并[ d ]噻唑-2-基)-4-氨基喹啉衍生物作为拓扑异构酶I抑制剂。在体外针对四种人类肿瘤细胞系(MGC-803,人肝癌HepG-2,T24,和NCI-H460)和一个正常细胞系的抗增殖评价(HL-7702)表示,其中大部分表现出强的细胞毒性。其中,5a被认为是最有前途的候选物,其IC 50值低至约2.20±0.14,并被选作进一步探索。光谱分析和琼脂糖凝胶电泳分析表明5a可以与DNA相互作用并强烈抑制拓扑异构酶I(Topo I)。进一步筛选化合物5b的Topo I活性,5c,5e,5f,5h,5i,5j,5l和5n表明一些化合物可能与5a具有完全不同的细胞毒性。分子建模研究证实5a采用独特的模式与DNA和Topo I相互作用。其他分子机理研究表明,用5a处理MGC-803细胞可诱导S期阻滞,上调促凋亡蛋白,下调抗凋亡蛋白,激活caspase-3,随后诱导