通过复合酶聚合酶放大与CRISPR/Cas13a相结合,对Vibrio alginolyticus进行快速视觉核酸检测
Yanan Wang1,2, Yachao Hou1,2, Xinping Liu1
1Department of Clinical Laboratory, The Six Medical Center of PLA General Hospital, No. 6 Fucheng Road, Beijing, 100048, China.
World journal of microbiology & biotechnology
|December 25, 2023
概括
一种新的RPA-CRISPR/Cas13a-LFD分子方法可以快速检测Vibrio alginolyticus核酸. 这种简单的,可在现场部署的测试为诊断V. alginolyticus感染提供了高灵敏度和特异性.
科学领域:
- 微生物学 微生物学
- 分子诊断学 分子诊断
- 生物技术是生物技术.
背景情况:
- 菌藻类病原体 (Vibrio alginolyticus) 是一种重要的海洋病原体,影响水产养殖和人类健康.
- 快速,灵敏和特定的V. alginolyticus现场检测对于及时诊断和治疗至关重要.
- 现有的诊断方法往往需要专门的设备和专业知识,限制了现场应用.
研究的目的:
- 开发一种简单,快速和有效的分子诊断方法来识别V. alginolyticus.
- 整合复合酶聚合酶放大 (RPA) 与CRISPR/Cas13a技术进行增强检测.
- 为了使可视化结果使用横向流量计 (LFD) 用于点的护理应用程序.
主要方法:
- 开发一个单管RPA-CRISPR/Cas13a-LFD测定用于V. alginolyticus核酸检测.
- 对相关的Vibrio物种和常见的临床病原体的特异性验证.
- 测试灵敏度的确定,检测极限为10个副本/μL.
- 在细菌分离物和受感染的小鼠血液中识别V. alginolyticus的方法的应用.
主要成果:
- 通过RPA-CRISPR/Cas13a-LFD方法,在不到50分钟的时间内取得了结果.
- 证实了高特异性,没有观察到交叉反应.
- 该试验显示出高灵敏度,检测极限为10个副本/μL.
- 从55个分离物中成功识别了35种V. alginolyticus菌株,由MALDI-TOFMS.证实.
- 在受感染的小鼠血液样本中实现了快速和简单的检测.
结论:
- RPA-CRISPR/Cas13a-LFD测定是一种可靠和快速的V. alginolyticus诊断工具.
- 该方法适合在资源有限的环境中使用,因为它的简单性和缺乏专门设备.
- 这项技术在改善水产养殖和临床场景中改善V. alginolyticus感染的管理方面具有重大潜力.
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