伤寒微生物:快速准确的血统识别和抗菌素耐药性基因定型,直接从伤寒热病原体沙门氏菌的序列读取得到
Danielle J Ingle1, Jane Hawkey2,3, Martin Hunt4,5,6,7
1The Department of Microbiology and Immunology, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia. danielle.ingle@unimelb.edu.au.
Genome medicine
|December 2, 2025
概括
Typhi Mykrobe 是一种用于直接从测序阅读中快速测定沙门氏菌Typhi基因型的新工具. 它准确地识别了病原体血统和抗菌素耐药性 (AMR) 的决定因素,帮助治疗和疫苗接种策略.
科学领域:
- 基因组监测是指基因组的监测.
- 微生物基因组学 微生物基因组学
- 生物信息学工具 生物信息学工具
背景情况:
- 由于沙门氏菌 (Salmonella enterica serovar Typhi (Typhi)) 引起的伤寒热,每年导致1000万例疾病.
- 有效的控制需要预防和抗菌素治疗,但抗菌素耐药性Typhi是一个越来越令人担忧的问题.
- 对Typhi血统和AMR决定因素的基因组监测为治疗指南和疫苗接种策略提供了信息.
研究的目的:
- 介绍Typhi Mykrobe,一个命令行软件工具,用于Typhi的快速基因定型.
- 为了实现对测序的直接分析,可以读取血统,AMR决定因素和等离子体复制品.
- 为Illumina和牛津纳米孔技术 (ONT) 测序数据提供一个验证的工具.
主要方法:
- 开发Typhi Mykrobe,一个用于直接读取分析的命令行工具.
- 对Illumina和ONT数据的已建立的读取映射和基于组装的方法进行验证.
- 预测的抗微生物耐药性表型与实验室衍生的最小抑制度 (MIC) 数据的比较.
主要成果:
- 泰菲菌根病毒与使用Illumina数据进行血统基因定型的现有方法具有很高的一致性 (99.8%).
- 与基于组装的方法相比,在AMR和等离子体决定性检测方面实现了99.9%的一致性.
- 预测和观察到的抗微生物耐药性表型之间显示出强烈一致 (>99%).
- 在Illumina和ONT读取分析之间观察到高一致性 (>96%).
结论:
- Typhi Mykrobe 提供了来自 Illumina 和 ONT 阅读的 Typhi 基因组的快速和敏感的基因组定型.
- 该工具准确地分配了GenoTyphi血统,检测了AMR决定因素,预测了表型,并识别了等离子体复制品.
- 伤寒菌是基因组监测的一个有价值的工具,用于指导针对伤寒热的公共卫生干预措施.
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