一个关于Shigella的故事:进化,等离子体和病毒性.
Nathaline Haidar-Ahmad1, France Ourida Manigat1, Navoun Silué1
1Host-Microbe Interactions Laboratory, Centre for Chemical and Synthetic Biology, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
Microorganisms
|July 29, 2023
概括
导致数以百万计的肠道感染的病原体Shigella,利用大型入侵等离子体 (pINV) 进行毒性. 这篇评论详细介绍了pINVV.
科学领域:
- 微生物学 微生物学
- 细菌病原体的产生
- 分子生物学分子生物学
背景情况:
- 每年,西格拉菌种会导致数以百万计的肠道感染,它们向人类结肠粘膜.
- 希格拉菌是大肠杆菌的病原体,以编码毒性因子的pINV等离子体区分开来.
- 它作为研究细胞内细菌病原学的关键模型.
研究的目的:
- 审查最近在Shigella的遗传进步,专注于其进化历史和pINV收购.
- 讨论关于pINV等离子体的维护机制的见解.
- 描述转录激活剂VirF,VirB和MxiE在病毒性基因表达中的调控作用.
主要方法:
- 评论最近的科学文献关于Shigella遗传学和病变的产生.
- 对西格拉菌和大肠杆菌之间的进化关系的分析.
- 检查控制病毒性基因表达的调控网络.
主要成果:
- 在大肠杆菌血统中的Shigella的进化路径与pINV的获取有关.
- 讨论了关于pINV等离子体维护的见解.
- 详细介绍了VirF,VirB和MxiE在调节III型分泌系统和icsA表达中的作用.
- 突出显示了pINV编码激活剂和染色体因子之间的相互作用.
- 发现了新的MxiE调节的染色体基因 (icaR, icaT, yccT).
结论:
- 希格拉菌和大肠杆菌共享平衡共生主义和病原性的一段历史.
- 了解pINV调控对于破译西格拉病毒的毒性至关重要.
- 等离子体和染色体因子之间的相互作用塑造了Shigella病变的发生.
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