Discovery of <i>N</i>-((1-(4-(3-(3-((6,7-Dimethoxyquinolin-3-yl)oxy)phenyl)ureido)-2-(trifluoromethyl)phenyl)piperidin-4-yl)methyl)propionamide (CHMFL-KIT-8140) as a Highly Potent Type II Inhibitor Capable of Inhibiting the T670I “Gatekeeper” Mutant of cKIT Kinase
作者:Binhua Li、Aoli Wang、Juan Liu、Ziping Qi、Xiaochuan Liu、Kailin Yu、Hong Wu、Cheng Chen、Chen Hu、Wenchao Wang、Jiaxin Wu、Zhenquan Hu、Ling Ye、Fengming Zou、Feiyang Liu、Beilei Wang、Li Wang、Tao Ren、Shaojuan Zhang、Mingfeng Bai、Shanchun Zhang、Jing Liu、Qingsong Liu
DOI:10.1021/acs.jmedchem.6b00902
日期:2016.9.22
cKIT kinase inhibitors, e.g., imatinib, could induce drug-acquired mutations such as cKIT T670I that rendered drug resistance after chronic treatment. Through a type II kinase inhibitor design approach we discovered a highly potent type II cKIT kinase inhibitor compound 35 (CHMFL-KIT-8140), which potently inhibited both cKIT wt (IC50 = 33 nM) and cKIT gatekeeper T670I mutant (IC50 = 99 nM). Compound
cKIT激酶抑制剂(例如伊马替尼)可以诱导药物获得的突变,例如cKIT T670I,这些突变在长期治疗后会产生耐药性。通过II型激酶抑制剂设计方法,我们发现了一种高效的II型cKIT激酶抑制剂化合物35(CHMFL-KIT-8140),该化合物有效抑制cKIT wt(IC 50 = 33 nM)和cKIT Gatekeeper T670I突变体(IC 50 = 99 nM)。化合物35对GISTs癌细胞系GIST-T1(cKIT wt,GI 50 = 4 nM)和GIST-5R(cKIT T670I,GI 50)表现出强大的抗增殖作用= 26 nM)。在细胞环境中,它强烈抑制c-KIT介导的信号通路并诱导细胞凋亡。在BaF3-TEL-cKIT-T670I等基因细胞接种的异种移植小鼠模型中,有35种具有剂量依赖性的肿瘤生长抑制功效,而100 mg / kg的剂量提供了47.7%的肿瘤生长抑制