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膜封闭的Pseudomonas诺信号通过干扰定数感应来减弱细菌的毒性

Xia Li¹, Gerun Wang¹, Quan Guo¹

¹School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, Guangdong, China.

Applied and environmental microbiology

|October 5, 2023

概括

通过囊泡传递的伪虫类信号 (PQS) 通过调节器ShvR.扰乱其质量感应 (QS) 来抑制Burkholderia cenocepacia的毒性. 这显示了PQS.

科学领域:

微生物学微生物学
细菌的传播细菌的传播
跨物种的相互作用跨物种的相互作用

背景情况:

定数感应 (QS) 对于细菌的传播和毒性至关重要.
Pseudomonas aeruginosa 使用 Pseudomonas quinolone 信号 (PQS) 进行细胞间的通信.
伯克霍尔迪亚 (Burkholderia cenocepacia) 在QS中使用cis-2-dodecenoic acid (BDSF) 和N-acyl homoserine lactone (AHL) 的方法.

研究的目的:

调查OMV提供的PQS在物种间交流中的作用.
了解PQS影响B. cenocepacia的机制.
探索针对QS的潜在治疗策略.

主要方法:

使用外膜囊泡 (OMV) 和脂质体进行PQS的输送.
在B. cenocepacia中分析QS信号的产生.
研究ShvR在B. cenocepacia中的监管作用.

主要成果:

由OMV或脂质体提供的PQS降低了B. cenocepacia的竞争力.
通过准调节器ShvR,PQS干扰了B. cenocepacia QS.
ShvR直接调节BDSF和AHL合成基因促进体.
ShvR对PQS的感知降低了QS信号的产生和毒性.

结论:

膜封闭的PQS调解了物种间的交流,影响了细菌社区的动态.
准ShvR提供了一种新的策略来减轻B. cenocepacia的毒性.
装有QS抑制剂的功能纳米载体为感染提供了治疗途径.

关键词:

伯克霍尔德里亚 (Burkholderia cenocepacia) 是一个大脑空间.莱斯R家族的转录调节器这是一个PQS信号.外膜囊泡的外膜囊泡是什么?议员数量检测是指对议员数量进行检测.

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