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鉴定了 Pseudomonas aeruginosa 中的cpxS 突变抗体

Zhe-Xian Tian¹, Yi-Ping Wang¹

¹State Key Laboratory of Protein and Plant Gene Research,School of Life Sciences, Peking University , Beijing, China.

Antimicrobial agents and chemotherapy

|October 6, 2023

概括

Pseudomonas aeruginosa 的 cpxS 基因突变通过增加 mexA 表达导致抗生素敏感性降低. 删除cpxR恢复了易感性,表明CpxS-CpxR系统调节了多药性耐药性.

科学领域:

微生物学微生物学
遗传学是一个遗传学.
分子生物学分子生物学

背景情况:

Pseudomonas aeruginosa 通过突变很容易发展出耐药性.
许多基因有助于P. aeruginosa.中的突变抗体.

研究的目的:

调查cpxS基因在P. aeruginosa多药耐药性发展中的作用.
阐明cpxS突变影响抗生素敏感性的机制.

主要方法:

一种多药耐药的P. aeruginosa菌株的全基因组测序.
对cpxS基因的随机突变和引入P. aeruginosa菌株.
对基因表达的分析,包括mexA促进体活性.
这是cpxR基因的删除突变发生.

主要成果:

在多药耐药的P. aeruginosa菌株中发现了cpxS的突变.
许多cpxS突变体表现出降低了对抗生素的敏感性.
删除cpxR恢复了cpxS突变菌株的抗生素敏感性.
在cpxS突变体中观察到mexA促进体表达的增加,这种表达方式依赖于cpxR.

结论:

两个组成的CpxS-CpxR系统调节P. aeruginosa中的mexAB-oprM操作子.
cpxS是突变抗体的一个新成员,在多种药物耐药性发展中发挥着重要作用.
在cpxS突变体中观察到的抗生素敏感性降低中,mexA是至关重要的.

关键词:

CpxRR 在线播放在CpxSS中使用.墨西哥AB-OprMM 伪omonas空气菌伪omonas空气菌突变性抗体对抗体

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