MOB规则:抗生素暴露重编程新陈代谢以在竞争性相互作用中调动细菌
Yongjin Liu1, Sandra LaBonte1,2, Courtney Brake3
1Biochemistry and Biophysics Department, Texas A&M University, AgriLife Research, College Station, Texas, USA.
bioRxiv : the preprint server for biology
|April 2, 2024
概括
细菌在应对亚抑制性抗生素度时动员. 这项研究确定了关键的调节者和代谢转变,使得这种协调的人口移动成为可能.
科学领域:
- 微生物学 微生物学
- 细菌生理学 细菌生理学
- 系统生物学 系统生物学
背景情况:
- 抗生素表现出剂量依赖的效果,抑制剂度引发各种细菌反应.
- 细菌细菌在暴露于细菌静态转化抑制剂时,通过种群传播机制动员.
- 控制抗生素诱导的细菌动员的调节机制在很大程度上是未知的.
研究的目的:
- 阐明在Bacillus subtilis中氨酸诱导的调节功能和代谢重编程的基础动员.
- 确定关键的转录调节器和参与协调细菌群体传播的代谢途径.
主要方法:
- 使用亚致死的氨醇度来诱导Bacillus subtilis的动员.
- 测量了全球基因表达和代谢变化.
- 绘制了调节网络的地图,并分析了基因/代谢物丰度,重点关注pdhA和pucA.
主要成果:
- 确定了一个转录调节器网络,协调代谢重编程以支持动员.
- 观察到糖解,核酸和氨基酸代谢的显著变化.
- 突出了pdhA和pucA作为关键基因,其表达和代谢物水平标志着动员人口的代谢状态.
结论:
- 发现了一种转录调节器网络,控制了对Bacillus subtilis种群动员至关重要的代谢转变.
- 突出了动员细菌群体不同区域内的不同代谢特征.
- 揭示了一个受调节的,人口层面的反应,使得协调的运动和适应亚抑制性抗生素压力成为可能.
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