基于CRISPR-Cas的诊断,用于在治疗场所检测性传播感染:实验室开发和评估研究
Soo Jen Low1, Matthew T O'Neill2, Janath A Fernando1
1Department of Infectious Diseases, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.
The Lancet. Microbe
|March 6, 2026
概括
一个新的基于CRISPR的测试面板为关键的性传播感染 (STIs) 提供了快速的护理点诊断,包括尼塞利亚淋病和Treponema pallidum. 这项技术还可以检测 gyrA S91F 耐药性标记物,有助于耐药导向治疗.
科学领域:
- 分子诊断学 分子诊断
- 这就是CRISPR技术.
- 传染病检测 发现 传染病检测
背景情况:
- 及时诊断性传播感染 (STIs) 对于有效治疗和减少传播至关重要.
- 目前的诊断方法可能不适合快速,点的护理设置.
- 需要开发一个便携式的多重测定方法.
研究的目的:
- 开发和评估一个基于CRISPR的便携式,多重测试面板,用于检测尼塞利亚淋病,克拉米迪亚,Treponema pallidum和简单疹病毒 (HSV).
- 包括检测尼塞利亚淋病中抗素耐药性标志物 gyrA S91F 的检测.
- 评估检测小组在护理地点的性能.
主要方法:
- 开发和优化使用同热放大和CRISPR-Cas反应的四种基于CRISPR的多重测定 (cTP-HSV和cNG-CT).
- 包括检测HSV-1/HSV-2分化的反射测试和检测Neisseria gonorrhoeae耐药性标志物.
- 分析验证包括特异性和检测极限 (LODs),随后对900个临床样本进行追溯一致性研究,使用qPCR作为参考标准.
主要成果:
- TP-HSV测定表明对T pallidum (82.5%) 和泛HSV (94.4%) 的高灵敏度,LOD分别为6.2和7.8副本/μL.
- NG-CT测定显示N. gonorrhoeae的灵敏度为80.0%,C. trachomatis的灵敏度为73.0%,两者的LOD为3.9副本/μL.
- 反射测试获得HSV-1 (97.0%) 和HSV-2 (96.0%) 的高灵敏度,但对 gyrA S91F标记物的灵敏度有所不同 (总体为63.1%,生殖器样本为85.7%).
结论:
- 开发的基于CRISPR的平台符合世卫组织针对N. gonorrhoeae和T. pallidum检测的目标产品配置文件.
- 对于 gyrA S91F检测的概念验证表明了对抗性引导性传染病治疗的潜力.
- 该测试套件显示出快速,分散和耐药性告知性传播感染的诊断的前景,特别是在资源有限的环境中,尽管需要进一步优化.
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