实时逆转录多酶同热速放大用于快速检测非洲马病病毒
Chaohua Huang1, Jianchang Wang2, Zhouxi Ruan1
1Laboratory of Animal Quarantine, Animal and Plant Inspection and Quarantine Technology Center of Shenzhen Customs, Shenzhen 518045, Guangdong Province, China.
Transboundary and emerging diseases
|April 30, 2025
概括
一种新的实时逆转录多酶异热快速放大 (RT-MIRA) 试验为检测非洲马病病毒 (AHSV) 提供了一种快速,特定和敏感的方法. 这种视觉,无设备的测定非常适合现场使用,克服了传统RT-qPCR的局限性.
科学领域:
- 兽医病毒学 兽医病毒学
- 分子诊断学 分子诊断
- 传染病监测 传染病监测 传染病
背景情况:
- 非洲马病 (AHS) 是一种高度致命的马病,由非洲马病病毒 (AHSV) 引起.
- 目前的黄金标准检测方法,如RT-qPCR是复杂的,昂贵的,耗时的,阻碍了现场应用.
- 准确和快速的诊断对于控制AHSV疫情至关重要.
研究的目的:
- 建立和评估一个实时反转录多酶同热速放大 (RT-MIRA) 试验,用于AHSV检测.
- 为AHSV监测开发一种敏感,具体和用户友好的诊断工具,特别是在资源有限的环境中.
主要方法:
- 设计和选用于针对AHSVSeg-7基因的原料和外探头.
- 实时RT-MIRA试验的建立和性能评估.
- 与RT-qPCR使用模拟和现场样本 (马类血液,Culicoides midges) 的比较.
主要成果:
- 该RT-MIRA测试显示,对AHSV的特异性很高,对其他马类病毒没有交叉反应.
- 灵敏度与RT-qPCR相似,检测极限为10个副本/μL.
- 该试验在模拟样本中显示出良好的可重复性,线性 (R2=0.9898) 和与RT-qPCR (κ=0.966,R2=0.9576) 的强相关性.
- 结果在蓝光下可视检测,不需要专门的设备.
- 所有测试的实地样本 (马血液和Culicoides) 都对AHSV. 呈阴性.
结论:
- 开发的实时RT-MIRA测定是一种特定,敏感和可靠的AHSV检测工具.
- 它的优点包括方便的操作,可视化和最小的设备要求,使其适用于现场和边境监视.
- 这种测试为各种环境中的快速AHSV查提供了有价值的替代方案.
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