Targeting topoisomerase II with trypthantrin derivatives: Discovery of 7-((2-(dimethylamino)ethyl)amino)indolo[2,1-b]quinazoline-6,12-dione as an antiproliferative agent and to treat cancer
作者:Elena Catanzaro、Nibal Betari、Jose M. Arencibia、Serena Montanari、Claudia Sissi、Angela De Simone、Ivano Vassura、Alan Santini、Vincenza Andrisano、Vincenzo Tumiatti、Marco De Vivo、Dmitri V. Krysko、Marco B.L. Rocchi、Carmela Fimognari、Andrea Milelli
DOI:10.1016/j.ejmech.2020.112504
日期:2020.9
appearance of resistance mechanisms upon treatment with topoII-targeted anticancer drugs. In the present investigation, we report the discovery of a new topoII inhibitor, whose design was based on the structure of the natural product trypthantrin, a natural alkaloidal compound containing a basic indoloquinazoline moiety. This new topoII inhibitor, here numbered compound 5, is found to inhibit topoII with
几十年来,针对人类拓扑异构酶II(topoII)的药物一直在临床实践中使用。然而,由于继发性恶性肿瘤的出现以及以靶向topoII的抗癌药物治疗后出现的耐药机制,迫切需要新的和更安全的topoII抑制剂。在本研究中,我们报告了一种新的topoII抑制剂的发现,该抑制剂的设计基于天然产物胰蛋白p聚糖的结构,胰蛋白ant呤是一种含有碱性吲哚并喹唑啉部分的天然生物碱化合物。发现这种新的topoII抑制剂(此处编号为化合物5)以26.6± 4.7μM的IC 50抑制topoII 。值得注意的是,化合物5它比模板化合物胰蛋白聚糖更有效,甚至比广泛使用的靶向topoII的临床药物依托泊苷更有效。另外,化合物5还显示出高水溶性,对不同的肿瘤细胞系例如急性白血病,结肠癌和乳腺癌有希望的抗增殖活性。根据这些结果,化合物5代表了开发新的topoII抑制剂作为抗癌治疗剂的有希望的先导。