| Literature DB >> 35767197 |
Honggeng Chen1, Liangcai Wu2, Yalun Su3, Zhilin Huang1, Likang Wang1, Zhiyun Xia1, Huarong Huang1, Wenxia Wang1, Jingyan Fang1, Zimin Gu1, Pinghua Sun4, Junxia Zheng5.
Abstract
Quorum sensing (QS), which controls the survival and virulence of Pseudomonas aeruginosa, including the formation of biofilm, is considered to be a new target to overcome pathogens. The aim of this study was to identify new QS inhibitors against P. aeruginosa and provide potential treatments for clinical infections. In this study, 25 compounds were isolated from Plumula nelumbini. Among these compounds, C25 showed the most significant biofilm inhibition activity, reaching 44.63% at 100 μM without inhibiting bacterial growth. Furthermore, C25 showed significant inhibition activity of rhamnolipid, pyocyanin, and elastase. Further mechanistic studies have confirmed that C25 could downregulate key genes in the QS system, including lasI, lasR, lasA, lasB, and pqsR, and Molecular docking studies have shown that C25 can bind to the active sites of the LasR and PqsR receptors. The present study suggests that C25 is a promising QS inhibitor for treating P. aeruginosa infections.Entities:
Mesh：
Substances：
Year: 2022 PMID： 35767197 DOI： 10.1007/s00284-022-02914-5
Source DB: PubMed Journal: Curr Microbiol ISSN： 0343-8651 Impact factor: 2.188