Rational design, synthesis, and biological evaluation of Pan-Raf inhibitors to overcome resistance
作者:Lu Wang、Gaoyuan Zhu、Qing Zhang、Chunqi Duan、Yanmin Zhang、Zhimin Zhang、Yujun Zhou、Tao Lu、Weifang Tang
DOI:10.1039/c7ob00518k
日期:——
Herein, we describe the design and characterization of a series of compounds I-01–I-22, based on a pyrimidine scaffold with DFG-out conformation as Pan-Raf inhibitors. Among them, I-15 binds to all Raf protomers with IC50 values of 12.6 nM (BRafV600E), 30.1 nM (ARaf), 19.7 nM (BRafWT) and 17.5 nM (CRaf) and demonstrates cellular activity against BRafWT phenotypic melanoma and BRafV600E phenotypic colorectal
具有DFG-in构象的选择性BRaf V600E抑制剂已被证明对黑色素瘤的一部分有效。然而,代表性抑制剂维罗非尼通过CRaf或BRAf WT依赖性方式迅速获得BRAf WT细胞的抗性。同时靶向Raf蛋白的所有亚型提供了增强功效以及降低获得性抗药性的前景。本文中,我们基于具有DFG-out构象的嘧啶支架作为泛Raf抑制剂,描述了一系列化合物I-01–I-22的设计和表征。其中,I-15结合所有Raf启动子,IC 50值为12.6 nM(BRaf V600E),30.1 nM(ARaf),19.7 nM(BRaf WT)和17.5 nM(CRaf),并证明了针对BRaf WT表型黑素瘤和BRaf V600E表型结直肠癌细胞的细胞活性。Western blot检测人黑素瘤SK-Mel-2细胞系中P-Erk的抑制作用表明,I-15在低至400 nM的浓度下抑制SK-Mel-2细胞系的增殖,而没有E