针对性下一代测序:一种有前途的方法,用于Mycobacterium tuberculosis检测和耐药性,当应用在Paucibacillary临床样本时
Wenting Jin1, Meixia Wang2, Yang Wang3
1Department of Infectious Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.
Microbiology spectrum
|June 10, 2025
概括
针对性下一代测序 (tNGS) 提供了一种灵敏而快速的方法来诊断结核病 (TB) 并确定各种临床样本中的耐药性 (DR). 这种方法看起来很有前途,特别是在文化阴性病例中,改进了像Xpert.这样的传统方法.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 传染性疾病 传染性疾病
背景情况:
- 结核病仍然是全球领先的传染病杀手,需要先进的诊断工具.
- 世界卫生组织 (WHO) 建议针对性下一代测序 (tNGS) 来检测Mycobacterium结核病 (MTB) 和耐药性 (DR).
- 目前的诊断方法,如培养和Xpert,在灵敏度和速度上有局限性.
研究的目的:
- 评估tNGS在诊断结核病和在不同临床样本类型中识别DR概况方面的有效性.
- 为了比较tNGS与培养,Xpert和元基因下一代测序 (mNGS) 的性能.
主要方法:
- 使用培养,Xpert,mNGS和tNGS分析各种临床样本类型.
- 对复合和微生物学参考标准的诊断灵敏度的比较.
- 使用tNGS和桑格测序检测和确认DR相关突变.
主要成果:
- tNGS表现出高灵敏度,与mNGS相比,优于培养和Xpert,特别是在肺外样本中.
- tNGS成功识别了与DR相关的突变,并在培养负结核病病例中提供了第一线DR概况.
- 桑格测序证实了tNGS在突变检测中的准确性.
结论:
- tNGS 是一种有前途的诊断工具,用于在各种临床样本中检测MTB和DR基因,包括乳样本.
- 与传统方法相比,tNGS在灵敏度,速度和文化独立性方面具有优势.
- tNGS的成本效益和快速交付时间使其成为结核病诊断的宝贵补充.
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