使用TraDIS分析识别 Campylobacter jejuni和Campylobacter coli基因,这些基因有助于氧化应激反应
Emily Stoakes1, Xuanlin Chen1, Lajos Kalmar2
1Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, UK.
BMC microbiology
|February 2, 2024
概括
这项研究确定了Campylobacter jejuni和Campylobacter coli中的基因,这些基因有助于它们在氧化压力下生存. 了解这些基因,如perR和ahpC,对于食品安全和预防细菌性胃肠炎至关重要.
科学领域:
- 微生物学 微生物学
- 食品安全 食品安全
- 细菌病原体的产生
背景情况:
- 坎比洛巴克特 (Campylobacter jejuni) 和坎比洛巴克特大肠杆菌导致广泛的细菌性胃肠炎.
- 这些细菌是有义务的微气友,对氧气敏感,但在大气氧气水平的食品中仍存在.
研究的目的:
- 在氧化应激下研究Campylobacter jejuni和Campylobacter coli中的基因适应性.
- 在这些物种中识别赋予对过氧化 (H2O2) 耐药性的基因.
主要方法:
- 利用转位子定向插入位点测序 (TraDIS) 来选参与氧化应激抵抗的基因.
- 在Campylobacter coli中使用定义的基因缺失的确定的发现.
主要成果:
- 鉴定了特定的基因 (perR,ahpC),可以增强坎皮洛巴克特对H2O2.2的耐受性.
- 发现 czcD (一种出口物) 的突变降低了 H2O2 耐受性,将运输与氧化应激反应联系起来.
- 在氧化应激抵抗中发现了保存和特定物种的基因作用.
结论:
- 这项研究为C. jejuni和C. coli在氧化应激下基因适应性提供了第一个比较分析.
- 突出了这些重要的食物传播病原体中氧化应激耐受性的保存和新型遗传机制.
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