现存的第一次世界大战的痢疾细菌NCTC1:基因组分析
Kate S Baker1, Alison E Mather1, Hannah McGregor2
1Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire, UK.
Lancet (London, England)
|December 3, 2014
概括
这项研究对第一次世界大战最古老的Shigella flexneri分离物 (NCTC1) 进行了测序,揭示了其抗微生物耐药性和进化适应性. 这一发现为了解甲状病毒病原体演变提供了一个历史性的基准.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 进化生物学 进化生物学
背景情况:
- 石,一个重要的腹疾病,历史上影响了第一次世界大战,并继续导致发展中国家的死亡率.
- 在军事行动中,甲状病毒疫情仍然是令人担忧的.
- 这项研究的重点是Shigella flexneri,这是一个关键的病原体,负责滋病.
研究的目的:
- 为了生成一个高质量的参考基因组历史的Shigella flexneri分离NCTC1.1.
- 为了研究NCTC1分离物的抗微生物耐药性概况.
- 为了与随后的Shigella flexneri菌株进行比较基因组学.
主要方法:
- 使用单分子实时 (SMRT) 技术对NCTC1分离物的全基因组测序.
- 为NCTC1.1创建一个参考基因组序列.
- 与过去一个世纪中隔离的Shigella flexneri菌株进行比较基因组分析.
主要成果:
- NCTC1属于Shigella flexneri血清型2a血统,与其他菌株共享一个大型核心基因组.
- 该分离物对青素和红红素呈现出耐药性.
- 随着时间的推移,S. flexneri 2a血统中获得的基因组岛屿与抗菌素耐药性,毒性和血清型变化增加有关.
结论:
- 希格拉柔性菌2a系是一种适应性病原体,在选择性压力下演变.
- 一个高质量的NCTC1参考基因组作为一个有价值的历史基准,用于Shigellae研究.
- 这项研究增强了对病原体进化和抗菌素耐药性发展的理解.
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