Discovery, Synthesis, and Evaluation of Small-Molecule Signal Transducer and Activator of Transcription 3 Inhibitors
作者:Zhi-Bing Shi、Dan Zhao、Yan-Yan Huang、Yun Du、Xiang-Rong Cao、Zhu-Nan Gong、Rui Zhao、Jian-Xin Li
DOI:10.1248/cpb.c12-00745
日期:——
The signal transducer and activator of transcription 3 (STAT3) oncogene is a promising molecular target and its inhibitors have great potential as anticancer drugs. To identify novel and STAT3-selective inhibitors, a virtual screening based on Specs and Maybridge databases was conducted and a 6,6'-bibenzoxazole type small molecule, compound 3a with a inhibition constant K(i) value of 494.32 nM to STAT3
转录3(STAT3)癌基因的信号转导和激活剂是一种有前途的分子靶标,其抑制剂作为抗癌药物具有巨大的潜力。为了鉴定新型和STAT3选择性抑制剂,基于Specs和Maybridge数据库进行了虚拟筛选,并探索了对STAT3的抑制常数K(i)为494.32 nM的6,6'-联苯并恶唑型小分子化合物3a。 。此外,使用人乳腺癌细胞系MDA-MB-468和MCF-7分别具有或不具有STAT3的组成性表达,通过基于细胞的分析合成并评估了最初衍生自3a的一系列新衍生物。在该系列中,3a,3c,3d和4e表现出更好的抑制活性和良好的选择性。其中,3a和3c显着抑制STAT3蛋白水平,并且还显示出对STAT3的结合亲和力,该流动性分析用石英晶体微天平(FIA-QCM)分析系统检测到。结果为有效的STAT3抑制剂的未来设计和开发提供了新的线索。