Discovery of the theobromine derivative MQS-14 that induces death of MGC-803 cells mainly through ROS-mediated mechanisms
作者:Ting Ma、Qi-Sheng Ma、Bin Yu、Hong-Min Liu
DOI:10.1016/j.ejmech.2019.04.044
日期:2019.7
levels in cancer cells are relatively higher than those in normal cells. Therefore, elevating cellular ROS levels may be a viable strategy for selective killing of cancer cells. In this work, we synthesized a series of new theobromine derivatives and evaluated their cytotoxicity against gastric cancer cells MGC-803, SGC-7901 and HGC-27. Particularly, MQS-14 potently inhibited cell growth of MGC-803
活性氧(ROS)在维持氧化还原平衡和调节生理过程中起着至关重要的作用,癌细胞中的ROS水平相对高于正常细胞中的ROS。因此,升高细胞ROS水平可能是选择性杀死癌细胞的可行策略。在这项工作中,我们合成了一系列新的可可碱衍生物,并评估了它们对胃癌细胞MGC-803,SGC-7901和HGC-27的细胞毒性。特别是,MQS-14在低微摩尔水平下有效抑制MGC-803,SGC-7901和HGC-27细胞的细胞生长。机理研究表明,化合物CQS-14降低了MGC-803细胞的细胞活力,并抑制了CFDA和EdU染色检测所揭示的细胞分裂。MQS-14增加细胞ROS水平并激活MAPK途径,同时降低p-ERK和增加p-JNK表达。MQS-14还诱导了MGC-803细胞中的DNA损伤和凋亡。总之,MQS-14部分通过升高细胞ROS水平诱导MGC-803细胞的细胞死亡。