Lipopolysaccharides from P. aeruginosa (Pseudomonas aeruginosa) 10 是一种来自铜绿假单胞杆菌 (P. aeruginosa 10) 的脂多糖内毒素和TLR4激活剂,属于 S 型 LPS。此化合物具有典型的三部分结构:O 抗原、核心寡糖和脂质 A。同时,它的脂肪酸组成异于常见的肠杆菌,磷酸化程度异常高(检测到三磷酸残基),并具有独特的核心寡糖外部区域,其 O 特异性侧链通常富含新型氨基糖。此脂多糖对病毒具易感性,高分子量多糖的含量直接影响其易感性,而这些多糖的缺失会增强其对噬菌体的敏感性。
Equisetin, an N-methylserine-derived acyl tetramic acid isolated from the terrestrial fungus Fusarium equiseti NRRL 5537, functions as a Quorum-sensing inhibitor (QSI) that specifically attenuates QS-regulated virulence phenotypes in P. aeruginosa, presenting a potent lead for treating P. aeruginosa infections without hindering bacterial growth. This tetramate-containing natural product possesses antibiotic and cytotoxic properties, effectively inhibiting the growth of Gram-positive bacteria and HIV-1 integrase activity, yet it does not impact Gram-negative bacteria.
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].
BAL30072 shows MIC90 values of 4 μg mL for MDR Acinetobacter spp. and 8 μg mL for MDR P. aeruginosa, respectively[1][2]. BAL-30072, a siderophore sulfactam, is a monocyclic beta-lactam antibiotic, with activity against multiresistant gram-negative bacilli