Interfering with HuR–RNA Interaction: Design, Synthesis and Biological Characterization of Tanshinone Mimics as Novel, Effective HuR Inhibitors
作者:Leonardo Manzoni、Chiara Zucal、Danilo Di Maio、Vito G. D’Agostino、Natthakan Thongon、Isabelle Bonomo、Preet Lal、Marco Miceli、Vanessa Baj、Marta Brambilla、Linda Cerofolini、Saioa Elezgarai、Emiliano Biasini、Claudio Luchinat、Ettore Novellino、Marco Fragai、Luciana Marinelli、Alessandro Provenzani、Pierfausto Seneci
DOI:10.1021/acs.jmedchem.7b01176
日期:2018.2.22
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(DHTS,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DHTS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(REMSA)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。