Synthesis and evaluation of 7-substituted-5,6-dihydrobenzo[ c ]acridine derivatives as new c- KIT promoter G-quadruplex binding ligands
作者:Qian-Liang Guo、Hua-Fei Su、Ning Wang、Sheng-Rong Liao、Yu-Ting Lu、Tian-Miao Ou、Jia-Heng Tan、Ding Li、Zhi-Shu Huang
DOI:10.1016/j.ejmech.2017.02.051
日期:2017.4
cells with c-KIT G-quadruplex binding ligands can reduce their c-KIT expression levels thus inhibiting cell proliferation and inducing cell apoptosis. Herein, a series of new 7-substituted-5,6-dihydrobenzo[c]acridine derivatives were designed and synthesized. Subsequent biophysical evaluation demonstrated that the derivatives could effectively bind to and stabilize c-KIT G-quadruplex with good selectivity
已经表明用c-KIT G-四链体结合配体处理癌细胞可以降低其c-KIT表达水平,从而抑制细胞增殖并诱导细胞凋亡。在此,设计并合成了一系列新的7-取代的5,6-二氢苯并[c] ac啶衍生物。随后的生物物理评估表明,这些衍生物可以有效地结合并稳定c-KIT G-四链体,并具有对双链体DNA的良好选择性。发现与5,6-二氢苯并[c] ac啶环的12位引入正电荷的12-N-甲基化衍生物相比,具有相似的结合亲和力,但对c-KIT G-四链体DNA的稳定能力较低。非甲基化衍生物。进一步的分子建模研究表明,G-四链体可能与配体结合。逆转录-聚合酶链反应(RT-PCR)分析和蛋白质印迹显示,化合物2b抑制了K562细胞中c-KIT基因的转录和翻译,这与靶向c-KIT癌基因启动子的有效G-四链体结合配体的性质一致。进一步的生物学评估表明,化合物2b可通过激活caspase-3级联途径诱导凋亡。