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Updated: Jan 14, 2026

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细菌病原体的菌株级特征使用肺炎患者的元基因组测序

Hua Zhou¹, Xi Li², Ying Mao^3,4,5

¹Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.

Journal of translational medicine

|October 22, 2025

概括

与传统培养和第三代测序相比,甲基因组下一代测序 (mNGS) 为传染病诊断提供了优越的菌株级分辨率. 这种方法准确地识别了病原体的克隆复合体和共感染,这对于了解毒性和耐药性至关重要.

科学领域:

传染病诊断传染病诊断传染病诊断
基因组学就是基因组学.
微生物学微生物学

背景情况:

下一代元基因组测序 (mNGS) 对于诊断传染病至关重要.
由于物种内毒性和抗菌素耐药性的差异,需要在菌株水平上进行分辨.

研究的目的:

将mNGS,培养和基于牛津纳米孔技术 (ONT) 的第三代元基因组测序 (mTGS) 的亚型化性能进行比较.
在肺炎中描述Acinetobacter baumannii和Klebsiella pneumoniae的菌株水平组成.
评估不同测序平台的准确性和精度,以确定病原体的亚型.

主要方法:

培养分离物的全基因组测序 (WGS) 和临床标本的mNGS (BALF,血液).
在BALF标本上对mNGS和mTGS进行比较分析.
分析了185个BALF标本的Acinetobacter baumannii和Klebsiella pneumoniae菌株组成.

主要成果:

mNGS和WGS在克隆复合体 (CC) 层面提供了相同的分类结果.
与mNGS相比,mTGS在CC识别中的准确性和精度较低.
在A. baumannii (5.40%) 和K. pneumoniae (19.55%) 阳性样本中检测到菌株级的同时感染.
抗生素耐药性概况在联合感染中有所不同,但在单一感染中是一致的.

结论:

由于病毒毒性和抗菌素耐药性的异质性以及共感染的流行程度,对菌株水平的识别至关重要.
与培养和mTGS相比,mNGS目前是病原体亚型化最合适的工具.
了解菌株成分对于有效的传染病管理至关重要.

关键词:

克隆复合体是一个复合体.同时感染同时感染文化文化文化文化文化肺炎是一种肺炎.压力打字是一种压力打字.mNGSS 在线观看在mTGS中.

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