Synthesis and in vitro and in vivo biological evaluation of novel derivatives of flexicaulin A as antiproliferative agents
作者:Jun-Feng Huo、Tian-Xing Hu、Ya-Long Dong、Jin-Zhu Zhao、Xiao-Jie Liu、Lei-Lei Li、Xue-Yan Zhang、Yun-Fan Li、Hong-Min Liu、Yu Ke、Cong Wang
DOI:10.1016/j.ejmech.2020.112789
日期:2020.12
As our research focuses on anticancer drugs, a series of novel derivatives of flexicaulin A (FA), an ent-kaurene diterpene, condensed with an aromatic ring were synthesized, and their antiproliferative activities against four human cancer cell lines (TE-1, EC109, MCF-7, and MGC-803) were evaluated. The activities of most of the new compounds were better than those of FA. Compound 2y exhibited the best
由于我们的研究集中在抗癌药物上,因此合成了一系列新的Flexicaulin A(FA)衍生物,一种与芳香环稠合的对映体-天牛二萜,它们对四种人类癌细胞系(TE-1,EC109 ,MCF-7和MGC-803)进行了评估。大多数新化合物的活性均优于FA。化合物2y表现出对食道癌细胞(EC109细胞)的最佳活性,IC50值达到0.13μM。正常细胞(GES-1细胞和HUVEC)中2y的IC50值分别为0.52μM和0.49μM。随后的机理研究发现,化合物2y可抑制癌细胞的增殖和细胞克隆。另外2y可以降低EC109细胞的线粒体膜电位,提高细胞凋亡率,提高ROS水平。此外,2y可上调ROS / JNK途径相关蛋白(p-ASK1,p-MKK4,p-JNK和p-Cjun(ser63))和促凋亡蛋白(Bax,Bad和Bim)的表达。体内实验表明2y可抑制裸鼠的肿瘤生长。该机制涉及ROS途径中蛋白质表达的增