Substituted lactam and cyclic azahemiacetals modulate Pseudomonas aeruginosa quorum sensing
摘要:
Quorum sensing (QS) is a population-dependent signaling process bacteria use to control multiple processes including virulence that is critical for establishing infection. The most common QS signaling molecule used by Gram-negative bacteria are acylhomoserine lactones. The development of non-native acylhomoserine lactone (AHL) ligands has emerged as a promising new strategy to inhibit QS in Gram-negative bacteria. In this work, we have synthesized a set of optically pure gamma-lactams and their reduced cyclic azahemiacetal analogues, bearing the additional alkylthiomethyl substituent, and evaluated their effect on the AHL-dependent Pseudomonas aeruginosa las and rhl QS pathways. The concentration of these ligands and the simple structural modification such as the length of the alkylthio substituent has notable effect on activity. The c-lactam derivatives with nonylthio or dodecylthio chains acted as inhibitors of las signaling with moderate potency. The cyclic azahemiacetal with shorter propylthio or hexylthio substituent was found to strongly inhibit both las and rhl signaling at higher concentrations while the propylthio analogue strongly stimulated the las QS system at lower concentrations. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] 2-METHYLTHIOPYRROLIDINES AND THEIR USE FOR MODULATING BACTERIAL QUORUM SENSING [FR] 2-MÉTHYLTHIOPYRROLIDINES ET LEUR UTILISATION POUR MODULER LA DÉTECTION DU QUORUM BACTÉRIEN
[EN] 2-METHYLTHIOPYRROLIDINES AND THEIR USE FOR MODULATING BACTERIAL QUORUM SENSING<br/>[FR] 2-MÉTHYLTHIOPYRROLIDINES ET LEUR UTILISATION POUR MODULER LA DÉTECTION DU QUORUM BACTÉRIEN
申请人:FLORIDA INT UNIV BOARD TRUSTEES
公开号:WO2012174511A1
公开(公告)日:2012-12-20
Compounds of Formula (I) are disclosed herein and their use in inhibiting quorum sensing in bacteria.
本文披露了化学式(I)的化合物及其在抑制细菌中的群体感应中的应用。
2-Methylthiopyrrolidines and Their Use for Modulating Bacterial Quorum Sensing
申请人:Malladi Venkata L.
公开号:US20140128446A1
公开(公告)日:2014-05-08
Compounds of Formula (I) are disclosed herein and their use in inhibiting quorum sensing in bacteria.
本文披露了化学式(I)的化合物及其在抑制细菌群体感应中的应用。
2-METHYLTHIOPYRROLIDINES AND THEIR USE FOR MODULATING BACTERIAL QUORUM SENSING
申请人:THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEES
公开号:US20160137599A1
公开(公告)日:2016-05-19
Compounds of Formula (I) are disclosed herein and their use in inhibiting quorum sensing in bacteria.