申请人:WISCONSIN ALUMNI RESEARCH FOUNDATION
公开号:US20170231962A1
公开(公告)日:2017-08-17
Methods for modulating quorum sensing in certain Gram-negative bacteria having multiple QS systems including Las, Rhl, and Pqs with associated receptors (LasR, RhlR and PqsR) which are modulated by small molecule modulators, particularly non-native modulators. Certain combinations of modulators of Las, Rhl and Pqs exhibit improved inhibition of virulence in comparison to the respective individual modulators. In particular, certain combinations of modulators exhibit improved inhibition in nutritionally depleted environments. More specifically, certain combinations of modulators exhibit improved inhibition in environments depleted in phosphate and/or environments depleted in iron. Nutrient depleted environments can mimic environments associated with bacterial infection in humans and non-human animals. The methods are useful in particular for modulating QS in
Pseudomonas
and
Buckholderia.
在某些具有多个QS系统的革兰氏阴性细菌中,包括具有相关受体(LasR、RhlR和PqsR)的Las、Rhl和Pqs的调控方法,这些受体受小分子调节剂(尤其是非天然调节剂)的调节。Las、Rhl和Pqs的某些调节剂组合相比于各自的单个调节剂表现出对毒力的改善抑制。特别是,某些调节剂组合在营养匮乏环境中表现出改善的抑制作用。更具体地说,某些调节剂组合在缺乏磷酸盐和/或缺乏铁的环境中表现出改善的抑制作用。营养匮乏环境可以模拟与人类和非人类动物细菌感染相关的环境。这些方法特别适用于调节假单胞菌和布氏杆菌中的QS。