中性粒细胞特异性转录组分析揭示了一种用于活性结核病诊断的新型特征
Jie Hu1,2, Song Liu1,2, Liguo Liu1,2
1NHC Key Laboratory of Systems Biology of Pathogens, National Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People's Republic of China.
Microbiology spectrum
|March 12, 2026
概括
一种新的4基因中性粒细胞特征 (neu-TB) 准确地使用RNA测序检测出活性结核病 (ATB). 这种基于血液的测试为结核病提供了一个快速的,非唾液的诊断工具,改善了疾病控制.
科学领域:
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 结核病 (TB) 仍然是一个重大的全球健康威胁,目前的诊断方法在速度和准确性方面面临限制.
- 活跃结核病 (ATB) 的唾液测试往往导致遗漏病例和延迟治疗,阻碍了有效的疾病控制.
- 迫切需要为肺结核进行快速,非唾液基础的诊断测试.
研究的目的:
- 用RNA测序来识别中性粒细胞中ATB特异的转录特征.
- 开发和验证一种新的,细胞类型特定的活跃结核病诊断生物标志物.
- 为了克服全血或外围血液单核细胞 (PBMC) 分析的局限性,因异质细胞背景而混.
主要方法:
- 对173个样本进行了中性粒细胞RNA测序 (RNA-seq) (67个ATB,42个潜伏结核病感染[LTBI],64个健康对照[HC]).
- 分析了差异表达基因 (DEGs),并使用拉索模型确定了4基因中性粒细胞衍生的结核病特征 (neu-TB).
- 在141个样本中,用定量实时聚合酶连锁反应 (qPCR) 验证了neu-TB的特征,并在两个独立的队列 (n=332) 中进一步评估.
主要成果:
- 新型TB签名显示了ATB和LTBI之间的异常歧视 (AUC=0.975,96.8%的灵敏度,92.5%的特异性).
- 它还在将ATB与健康对照区分开来方面表现出卓越的表现 (AUC=0.980,91.9%的灵敏度,96.5%的特异性).
- 这种特征有效地将ATB与其他肺部疾病区分开来 (AUC=0.969,93.0%灵敏度,87.9%的特异性).
结论:
- 4基因neu-TB签名代表了一种新的,高度准确的活跃结核病诊断生物标志物.
- 这项研究建立了一种新的方法来识别转录生物标记物,使用免疫细胞子集特定的分析.
- 新型结核病的特征表明,它对快速,非唾液基础的ATB诊断具有有希望的临床适用性.
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