Design, Synthesis, and Biological Evaluation of 2-Phenoxyalkylhydrazide Benzoxazole Derivatives as Quorum Sensing Inhibitors with Strong Antibiofilm Effect
作者:Panpan Zhang、Yangchun Ma、Yingmei Wang、Enhui Dong、Shutao Ma
DOI:10.1021/acs.jmedchem.3c02379
日期:2024.4.11
antibacterial agents with novel mechanisms to treat infections caused by drug-resistant bacteria. In this paper, we designed and synthesized 2-phenoxyalkylhydrazide benzoxazole derivatives and evaluated their quorum sensing inhibition activity. Among them, 26c at a concentration of 102.4 μg/mL not only inhibited the production of pyocyanin and rhamnolipid by 45.6% and 38.3%, respectively, but also suppressed
随着细菌对传统抗生素的耐药性问题日益严重,迫切需要具有新机制的新型抗菌药物来治疗耐药菌引起的感染。在本文中,我们设计并合成了2-苯氧基烷基酰肼苯并恶唑衍生物,并评估了其群体感应抑制活性。其中,浓度为102.4 μg/mL的26c不仅能分别抑制绿脓素和鼠李糖脂的产生45.6%和38.3%,而且浓度为32 μg/mL的26c还能抑制76.6%的生物膜产生。此外, 26c不会影响细菌生长,但在感染铜绿假单胞菌PAO1的小鼠模型中,它可以帮助环丙沙星有效消除活细菌。在靶向实验中, 26c能够以浓度依赖性方式抑制PAO1- lasB - gfp和PAO1- pqsA - gfp的荧光强度,表明该化合物作用于群体感应系统。总体而言, 26c作为具有强抗生物膜作用的群体感应抑制剂值得进一步研究。