化学
胶质瘤
微管蛋白
细胞凋亡
恶唑
肺癌
癌细胞
立体化学
癌症研究
生物化学
癌症
细胞生物学
微管
生物
内科学
医学
遗传学
作者
Jie Liu,Ye Wan,Jiangping Xu,Haitao Wang,Xiaofang Li,Wenya Wang,Zhong‐Zhen Zhou
标识
DOI:10.1016/j.ejmech.2021.113700
摘要
To discover PDE4/tubulin dual inhibitors with novel skeleton structures, 7-trimethoxyphenylbenzo[d]oxazoles 4a-u and 4-trimethoxyphenylbenzo[d]oxazoles 5a-h were designed and synthesized by migrating the trimethoxyphenyl group of TH03 to the benzo[d]oxazole moiety. Among these compounds, approximately half of them displayed good antiproliferative activities against glioma (U251) and lung cancer (A549 and H460) cell lines. The structure-activity relationships of trimethoxyphenylbenzo[d]oxazoles led to the identification of 4r bearing indol-5-yl side-chain as a novel dual PDE4/tubulin inhibitor, which exhibited satisfactory antiproliferative activities against glioma (IC50 = 300 ± 50 nM) and lung cancer (average IC50 = 39.5 nM) cells. Further investigations revealed that 4r induced apoptosis at G2/M phase arrest and disrupted the microtubule network. The preliminary mechanism of action showed that 4r down-regulated the expression of cyclin B1 and its upstream regulator gene cdc25C in A549.
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