A Potent and Selective P-gp Modulator for Altering Multidrug Resistance Due to Pump Overexpression
作者:Stefano Guglielmo、Marialessandra Contino、Loretta Lazzarato、Maria Grazia Perrone、Marco Blangetti、Roberta Fruttero、Nicola Antonio Colabufo
DOI:10.1002/cmdc.201500538
日期:2016.2
In this study a small library of alkyl/oxyalkyl derivatives of MC70 [4′‐(6,7‐dimethoxy‐3,4‐dihydro‐1H‐isoquinolin‐2‐ylmethyl)biphenyl‐4‐ol], a well‐known P‐gp inhibitor, was synthesized through straightforward functionalization of the phenolic group present in the structure of MC70. All compounds were characterized for their effect on P‐gp, proving capable of blocking P‐gp‐mediated calcein‐AM efflux
P-糖蛋白(P-gp)是负责主动转运几种内源性和外源性物质的膜蛋白。它构成防御机制,同时严重损害了抗肿瘤化学疗法的成功率。在这项研究中,MC70 [4'-((6,7-二甲氧基-3,4-二氢-1 H-异喹啉-2-基甲基)联苯-4-醇]的烷基/氧烷基衍生物的小型文库P-gp抑制剂是通过将MC70结构中存在的酚基团直接官能化而合成的。所有化合物均以其对P-gp的作用为特征,并证明其具有充当该转运蛋白高亲和力底物的能力,能够以微摩尔浓度阻断P-gp介导的钙黄绿素-AM流出。令人兴奋的是,化合物4[6,7-二甲氧基-2-(((4'-丁氧基联苯-4-基)甲基)-1,2,3,4-四氢异喹啉]]的纳摩尔浓度低(5.2 n m),具有独特的活性,可发挥作用既作为正构构调节剂,又作为转运蛋白的底物。还描述了MC70的新的和更有效的合成方法。