New <i>Pqs</i> Quorum Sensing System Inhibitor as an Antibacterial Synergist against Multidrug-Resistant <i>Pseudomonas aeruginosa</i>
作者:Jun Liu、Jin-Song Hou、Yi-Qun Chang、Li-Jun Peng、Xiao-Yi Zhang、Zhi-Ying Miao、Ping-Hua Sun、Jing Lin、Wei-Min Chen
DOI:10.1021/acs.jmedchem.1c01781
日期:2022.1.13
Development of new bacterial biofilm inhibitors as antibacterial synergists is an effective strategy to solve the resistance of Pseudomonas aeruginosa. In this paper, a series of 3-hydroxy-pyridin-4(1H)-ones were synthesized and evaluated, and the hit compound (20p) was identified with the effects of inhibiting the production of pyocyanin (IC50 = 8.6 μM) and biofilm formation (IC50 = 4.5 μM). Mechanistic
开发新的细菌生物膜抑制剂作为抗菌增效剂是解决铜绿假单胞菌耐药性的有效策略。本文合成并评价了一系列3-羟基-吡啶-4(1 H )-酮类化合物,鉴定出具有抑制绿脓素生成作用的化合物( 20p ) (IC 50 = 8.6 μM)和生物膜形成 (IC 50 = 4.5 μM)。机理研究证实,20p通过抑制pqsA的表达,阻断pqs来抑制细菌生物膜的形成群体感应系统喹诺酮类生物合成。此外,我们系统地研究了目前批准的 CF 抗生素(包括妥布霉素、环丙沙星和粘菌素 E)与20p组合的杀菌效果,显示出明显的抗菌协同作用,以克服多重耐药铜绿假单胞菌生物膜中的抗生素耐药性。结果表明,化合物20p可能在未来用作治疗铜绿假单胞菌感染的潜在新型抗菌增效剂候选物。