Identification and Structure–Activity Relationships of Novel Compounds that Potentiate the Activities of Antibiotics in <i>Escherichia coli</i>
作者:Keith M. Haynes、Narges Abdali、Varsha Jhawar、Helen I. Zgurskaya、Jerry M. Parks、Adam T. Green、Jerome Baudry、Valentin V. Rybenkov、Jeremy C. Smith、John K. Walker
DOI:10.1021/acs.jmedchem.7b00453
日期:2017.7.27
In Gram-negative bacteria, efflux pumps are able to prevent effective cellular concentrations from being achieved for a number of antibiotics. Small molecule adjuvants that act as efflux pump inhibitors (EPIs) have the potential to reinvigorate existing antibiotics that are currently ineffective due to efflux mechanisms. Through a combination of rigorous experimental screening and in silico virtual
在革兰氏阴性细菌中,外排泵能够防止多种抗生素达到有效的细胞浓度。充当外排泵抑制剂(EPI)的小分子佐剂有可能使现有的由于外排机制无效的抗生素恢复活力。通过严格的实验筛选和计算机虚拟筛选的组合,我们最近确定了与膜融合蛋白AcrA相互作用的新型EPI,AcrA是大肠杆菌中AcrAB-TolC外排泵的关键组件。在本文中,我们介绍了围绕先前提到的命中之一NSC 60339(1)的初步优化工作以及结构与活性之间的关系。通过这些努力,我们确定了两种化合物,SLUPP - 225(17小时)和SLUPP - 417(170),它表现出良好的特性,如潜在环境绩效指标大肠杆菌细胞,包括渗透外膜的能力,改进的相对流出的抑制作用1新生霉素的活性的,和增强和红霉素。