申请人:WISCONSIN ALUMNI RESEARCH FOUNDATION
公开号:US10322112B2
公开(公告)日:2019-06-18
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 Burkholderia.
用于调节某些革兰氏阴性细菌法定人数感应的方法,这些细菌具有多个 QS 系统,包括 Las、Rhl 和 Pqs 以及相关的受体(LasR、RhlR 和 PqsR),这些受体受小分子调节剂,特别是非本地调节剂的调节。与单独的调节剂相比,Las、Rhl 和 Pqs 的某些调节剂组合能更好地抑制毒力。特别是,某些调制剂组合在营养缺乏的环境中表现出更好的抑制作用。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更好的抑制作用。营养缺乏的环境可以模拟与人类和非人类动物细菌感染有关的环境。这些方法尤其适用于调节假单胞菌和伯克霍尔德氏菌的 QS。