CemR非典型响应调节器对坎皮洛巴菌的能量转化产生影响
Mateusz Noszka1, Agnieszka Strzałka2, Jakub Muraszko1
1Department of Microbiology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland.
mSystems
|July 9, 2024
概括
坎比洛巴克特 (Campylobacter jejuni) 和阿尔科巴克特 (Arcobacter butzleri) 依赖于CemR调节剂来适应它们的新陈代谢和呼吸以适应不断变化的氧气水平以求生存. 没有CemR,这些病原体的能量产生减少,生长速度减慢,影响它们的传染性.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 病原发生和发病.
背景情况:
- 坎比洛巴克特 (Campylobacter jejuni) 和阿尔科巴克特 (Arcobacter butzleri) 是导致食源性腹疾病的主要原因.
- 这些病原体居住在可变的大气环境中,需要对不断变化的氧度进行代谢适应.
- 有效的能量生产和生长取决于调整呼吸和代谢途径.
研究的目的:
- 确定调节机制,使坎皮洛巴克特 (Campylobacter jejuni) 和阿尔科巴克特 (Arcobacter butzleri) 能够适应波动的氧气水平.
- 研究特定调节蛋白在控制能量生产的代谢重编程中的作用.
- 了解这些调节剂对细菌生存,适应和致病性的更广泛影响.
主要方法:
- 转录组和蛋白组分析被用来研究基因和蛋白质表达.
- 对缺乏特定调节蛋白质的野生类型和突变菌株进行了比较研究.
- 功能性测试评估了在不同氧气条件下细菌生长,ATP生产和代谢途径活性.
主要成果:
- 缺乏特定调节蛋白质的Campylobacter jejuni和Arcobacter butzleri (分别是Cj1608和Abu0127) 显示出对代谢和呼吸道重编程能力受损.
- 这些细菌的ATP产量减少,并且无法有效地调整生长,以应对不断变化的氧气供应.
- 已识别的Campylobacteria能量和新陈代谢调节器 (CemRs) 被提出为控制依赖氧气的代谢转变的关键转录因子.
结论:
- 通过调节对氧气的代谢反应,CemRs对于Campylobacter jejuni和Arcobacter butzleri在不同的生存和适应至关重要.
- CemRs充当全球调节者,控制特定物种的基因并影响微气友适应和氧化应激反应.
- 发现CemRs为了解和潜在地准这些重要的食物传播病原体的致病性提供了新的途径.
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