De novo design approaches targeting an envelope protein pocket to identify small molecules against dengue virus
作者:Emilse S. Leal、Natalia S. Adler、Gabriela A. Fernández、Leopoldo G. Gebhard、Leandro Battini、Maria G. Aucar、Mariela Videla、María Eugenia Monge、Alejandro Hernández de los Ríos、John Alejandro Acosta Dávila、María L. Morell、Sandra M. Cordo、Cybele C. García、Andrea V. Gamarnik、Claudio N. Cavasotto、Mariela Bollini
DOI:10.1016/j.ejmech.2019.111628
日期:2019.11
the best candidate, from which one synthesized compound displayed micromolar activity. Molecular dynamics-based optimization was performed on this hit, and thirty derivatives were designed in silico, synthesized and evaluated on their capacity to inhibit dengue virus entry into the host cell. Four compounds were found to be potent antiviral compounds in the low-micromolar range. The assessment of drug-like
登革热是一种由蚊子传播的病毒性疾病,已成为全球主要的公共卫生问题。该疾病具有广泛的临床表现,从轻度感冒样疾病到更严重的出血性登革热和登革热休克综合症。目前,尚无用于治疗该疾病的批准药物或有效疫苗。包膜蛋白(E)是病毒体表面的主要成分。该蛋白在病毒进入过程中起关键作用,构成了抗病毒药物开发的诱人靶标。E蛋白的晶体结构表明存在被洗涤剂正辛基-β-d-葡萄糖苷(β-OG)占据的疏水口袋。该口袋位于结构域I和II之间的铰链区,对于病毒体与宿主细胞融合所需的低pH触发构象重排很重要。针对与E结合并充当病毒进入抑制剂的新型分子的设计,我们通过从头开始在疏水位点(β-OG)内“生长”分子进行了从头设计方法。从产生的24万多个小分子中,选择2,4个嘧啶支架作为最佳候选物,从中一个合成的化合物显示出微摩尔活性。为此,对分子进行了基于分子动力学的优化,并通过计算机设计了三十种衍生物,对其进行了合成并对其抑制登