Quorum Sensing-IN-2(compound 23e)是一款不影响细菌生长的群体感应抑制剂,具有减少细菌致病性的功能。该化合物在抑制细菌感染方面表现出效力,同时具有极低的溶血活性。在铜绿假单胞菌PAO1引起的菌血症模型中,Quorum Sensing-IN-2与环丙沙星共同作用,显示了协同效应。
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.