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Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates

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Published on: May 30, 2017

德格斯蛋白酶调节了Vibrio cholerae中抗氧化能力和适应氧化应激环境的适应性

Kaiying Wang^1,2, Huifang Lu^1,2, Mei Zou^1,2

¹Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China.

Frontiers in cellular and infection microbiology

|December 6, 2023

概括

霍乱病毒DegS蛋白通过通过cAMP-CRP-RpoS通路控制xthA基因来调节抗氧化能力. 这影响了细菌的生存和肠道殖民.

科学领域:

微生物学微生物学
分子生物学分子生物学
细菌病原体的产生

背景情况:

氧化应激适应对于*Vibrio cholerae*的生存至关重要.
众所周知,DegS蛋白激活了 σ E 包膜应激反应.
以前的研究表明,DegS参与了氧化应激调节.

研究的目的:

研究DegS在调节*Vibrio cholerae**抗氧化能力方面的作用.
阐明DegS影响氧化应激反应的分子机制.
评估DegS对*V.cholerae*肠道殖民化的影响.

主要方法:

基因删除突变体 (*degS*, *rpoE*, *rpoS*) 被创建并分析.
使用定量逆转录PCR (qRT-PCR) 来评估基因表达水平.
进行了小鼠肠道殖民实验,以评估细菌的生存和适应.

主要成果:

删除degS基因减少了霍乱病毒的抗氧化能力.
德格斯通过cAMP-CRP-RpoS通路调节*xthA*基因转录.
过度表达XthA在*degS*突变体中部分恢复了抗氧化能力.
在小鼠中,缺乏*degS*,*rpoE*或*rpoS*的*V. cholerae*突变体显示肠道殖民减少.

结论:

德格斯在调节 *V. cholerae* 的抗氧化活性方面发挥着重要作用.
该cAMP-CRP-RpoS通路是对抗氧化剂防御的DegS介导调节的组成部分.
DegS对于*V. cholerae*能够承受氧化应激和殖民宿主肠道的能力至关重要.

关键词:

在 DegS 蛋白酶中,霍乱病毒病毒 (Vibrio cholerae) 是一种病毒.XthA 这是一个XthA.抗氧化作用抗氧化作用在cAMP-CRP中使用.

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