Design, Synthesis, and Pharmacological Characterization of N-(4-(2 (6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)yl)ethyl)phenyl)quinazolin-4-amine Derivatives: Novel Inhibitors Reversing P-Glycoprotein-Mediated Multidrug Resistance,Journal of Medicinal Chemistry

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Design, Synthesis, and Pharmacological Characterization of N-(4-(2 (6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)yl)ethyl)phenyl)quinazolin-4-amine Derivatives: Novel Inhibitors Reversing P-Glycoprotein-Mediated Multidrug Resistance
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2017-04-05 00:00:00 , DOI: 10.1021/acs.jmedchem.6b01787
Qianqian Qiu ₁ , Baomin Liu ₁ , Jian Cui ₁ , Zheng Li ₁ , Xin Deng ₁ , Hao Qiang ₁ , Jieming Li ₁ , Chen Liao ₁ , Bo Zhang ₁ , Wei Shi ₁ , Miaobo Pan ₁ , Wenlong Huang _{1,

2} , Hai Qian _{1,

2}

Affiliation

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 boosted the potency of other MDR-related cytotoxic agents with different structures, increased accumulation of DOX, blocked P-gp-mediated Rh123 efflux, and suppressed P-gp ATPase activity in K562/A02 MDR cells. However, 12k did not have any effects on CYP3A4 activity or P-gp expression. In particular, 12k had a good half-life and oral bioavailability and displayed no influence on DOX metabolism to obviate the side effects closely related to increased plasma concentrations of cytotoxic agents in vivo.

中文翻译：

N-（4-（2（6,7-二甲氧基-3,4-二氢异喹啉-2（1 H）基）乙基）苯基）喹唑啉-4-胺衍生物的设计，合成及药理学表征：新型可逆P抑制剂-糖蛋白介导的多药耐药性

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。

更新日期：2017-04-05

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