Discovery of 5-(methylthio)pyrimidine derivatives as L858R/T790M mutant selective epidermal growth factor receptor (EGFR) inhibitors
作者:Qiang Xiao、Rong Qu、Dingding Gao、Qi Yan、Linjiang Tong、Wei Zhang、Jian Ding、Hua Xie、Yingxia Li
DOI:10.1016/j.bmc.2016.04.032
日期:2016.6
hundreds of fold less potency on EGFRWT. These compounds also strongly inhibited the proliferation of H1975 non-small cell lung cancer cells bearing EGFRL858R/T790M, while being significantly less toxic to A431 human epithelial carcinoma cells with overexpressed EGFRWT. The EGFR kinase inhibitory and antiproliferative activities were further validated by Western blot analysis for activation of EGFR and the
为了克服NSCLC患者中第一代EGFR抑制剂的耐药性和第二代抑制剂的非选择性毒性,发现了一系列5-(甲硫基)嘧啶衍生物作为新型EGFR抑制剂,不仅具有强大的酶促和抗增殖活性EGFR L858R / T790M突变体,但对宽型受体具有良好的选择性。通过采用基于结构的药物设计和基于WZ4002和CO1686的传统优化策略来实现此目标。这些衍生物抑制了EGFR L858R / T790M突变体的酶活性,IC 50值在亚纳摩尔范围内,而对EGFR WT的活性降低了数百倍。。这些化合物还强烈抑制带有EGFR L858R / T790M的H1975非小细胞肺癌细胞的增殖,而对过表达EGFR WT的A431人上皮癌细胞的毒性则显着降低。EGFR激酶的抑制和抗增殖活性已通过Western blot分析进一步证实了癌细胞中EGFR的激活和下游信号传导。