valuable drug target. We previously found that dihydrotanshinone-I (DHTS, 1) prevents the association of HuR with its RNA substrate, thus imparing its function. Herein, inspired by DHTS structure, we designed and synthesized an array of ortho-quinones (tanshinone mimics) using a function-oriented synthetic approach. Among others, compound 6a and 6n turned out to be more effective than 1, showing a nanomolar
人抗原R(HuR)是一种RNA结合蛋白,已知可调节编码与炎症,肿瘤发生和应激反应有关的蛋白质的靶标mRNA的表达,并且是有价值的药物靶标。我们先前发现
二氢丹参酮-I(DH
TS,1)阻止了HuR与它的RNA底物的缔合,从而削弱了它的功能。在此,受DH
TS结构的启发,我们使用面向功能的合成方法设计并合成了一系列邻醌(
丹参酮模拟物)。其中,化合物6a和6n比1更有效,显示出纳摩尔浓度的K i并破坏HuR与细胞中RNA的结合。NMR滴定和分子动力学(MD)模拟的组合方法表明6a使HuR稳定在独特的闭合构象中,这与RNA结合不相容。关于新合成的化合物的Alpha筛选和RNA电泳迁移率变动分析(R
EMSA)数据首次允许结构活性关系(
SAR)的产生,从而为高效HuR干扰物的产生提供了坚实的背景。