virulence factor pyocyanin

4-(tert-Butyl)-benzhydroxamic Acid is a PqsR antagonist with IC50s of 12.5 μM and 23.6 μM for E. coli and P. aeruginosa, respectively, and it reduces the production of the virulence factor pyocyanin in P. aeruginosa with an IC50 of 87.2 μM[1].

PqsR-IN-3 (compound 16e) 是一种选择性抑制剂，作用于 pqs 系统 (IC50=3.7 μM) 及其相关毒力因子绿脓素 (IC50=2.7 μM)。此化合物能够抑制细菌生物膜的合成，对铜绿假单胞菌表现出显著的细胞毒性。同时，PqsR-IN-3 能与多种抗生素协同增强作用，如 Ciprofloxacin 和 Tobramycin。

F-17 is a promising virulence factor inhibitor, displaying substantial inhibitory effects on biofilm formation, elastase activity, pyocyanin production, and swarming motility. Additionally, F-17 exhibits a strong binding affinity towards LasR and PqsR. Notably, F-17 does not exhibit any discernible cytotoxicity [1].