Synthesis, in vitro and in vivo biological evaluation of substituted 3-(5-imidazo[2,1-b]thiazolylmethylene)-2-indolinones as new potent anticancer agents
作者:Rita Morigi、Alessandra Locatelli、Alberto Leoni、Mirella Rambaldi、Roberta Bortolozzi、Elena Mattiuzzo、Roberto Ronca、Federica Maccarinelli、Ernest Hamel、Ruoli Bai、Andrea Brancale、Giampietro Viola
DOI:10.1016/j.ejmech.2019.01.049
日期:2019.3
small library of 3-(5-imidazo[2,1-b]thiazolylmethylene)-2-indolinones has been synthesized and screened according to protocols available at the National Cancer Institute (NCI). Some derivatives were potent antiproliferative agents, showing GI50 values in the nanomolar range. Remarkably, when most active compounds against leukemia cells were tested in human peripheral blood lymphocytes from healthy donors
根据国家癌症研究所(NCI)提供的协议,合成并筛选了3-(5-咪唑并[2,1- b ]噻唑基亚甲基)-2-吲哚满酮的小型文库。一些衍生物是有效的抗增殖剂,在纳摩尔范围内显示GI 50值。值得注意的是,当在健康捐献者的人外周血淋巴细胞中检测到大多数针对白血病细胞的活性化合物时,其细胞毒性要低100-200倍。NCI生物学评估委员会选择了一些化合物,以确定微管蛋白组装抑制作用。此外,对HeLa,HT-29和A549细胞进行的流式细胞术研究表明,化合物14和25在G2 / M阶段造成了封锁。有趣的是,这些衍生物通过线粒体死亡途径诱导细胞凋亡,同时引起caspase-3和-9的显着激活,PARP裂解以及抗凋亡蛋白Bcl-2和Mcl-1的下调。最后,还在小鼠BL6-B16黑色素瘤和E0771乳腺癌细胞中对化合物25进行了体内测试,在两种情况下均导致肿瘤体积显着减少。