Design, Synthesis, and Pharmacological Characterization of <i>N</i>-(4-(2 (6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1<i>H</i>)yl)ethyl)phenyl)quinazolin-4-amine Derivatives: Novel Inhibitors Reversing P-Glycoprotein-Mediated Multidrug Resistance
作者:Qianqian Qiu、Baomin Liu、Jian Cui、Zheng Li、Xin Deng、Hao Qiang、Jieming Li、Chen Liao、Bo Zhang、Wei Shi、Miaobo Pan、Wenlong Huang、Hai Qian
DOI:10.1021/acs.jmedchem.6b01787
日期:2017.4.27
P-glycoprotein (P-gp)-mediated multidrug resistance (MDR) is a principal obstacle for successful cancer chemotherapy. A novel P-gp inhibitor with a quinazoline scaffold, 12k, was considered to be the most promising for in-depth study. 12k possessed high potency (EC50 = 57.9 ± 3.5 nM), low cytotoxicity, and long duration of activity in reversing doxorubicin (DOX) resistance in K562/A02 cells. 12k also
P-糖蛋白(P-gp)介导的多药耐药性(MDR)是成功进行癌症化疗的主要障碍。具有喹唑啉骨架的新型P-gp抑制剂12k被认为是最有希望进行深入研究的。12k具有高效力(EC 50 = 57.9±3.5 nM),低细胞毒性,并且在逆转K562 / A02细胞对阿霉素(DOX)的耐药性方面具有很长的活性。12k还增强了具有不同结构的其他MDR相关细胞毒性剂的效力,增加了DOX的积累,阻断了K562 / A02 MDR细胞中P-gp介导的Rh123外排,并抑制了P-gp ATPase活性。但是,12k对CYP3A4活性或P-gp表达没有任何影响。尤其是,12k具有良好的半衰期和口服生物利用度,并且对DOX代谢无影响,从而消除了与体内细胞毒剂血浆浓度升高密切相关的副作用。