双核酶增强敏感生物传感器用于使用DNase I辅助CRISPR/Cas12a (CRISPR-DNase I) 系统检测ENROFLOXACIN
Yafang Shen1, Xingyue Tang2, Jiangqi Wang1
1Key Laboratory of Healthy Freshwater Aquaculture, Ministry of Agriculture and Rural Affairs, Huzhou Key Laboratory of Aquatic Product Quality Improvement and Processing Technology, Zhejiang Institute of Freshwater Fisheries, Huzhou, 313001, China.
Talanta
|May 24, 2025
概括
这项研究引入了一种新的CRISPR/Cas12a生物传感器,用于检测兽药药物恩洛素 (ENR). 这种创新方法使用激活器DNA和DNase I来实现对非核酸点的敏感,定量检测.
科学领域:
- 生物技术是生物技术.
- 生物传感器技术的技术
- 分子诊断学 分子诊断学
背景情况:
- CRISPR/Cas系统主要用于核酸检测.
- 使用CRISPR/Cas检测非核酸点需要间接激活方法.
- 恩洛素 (ENR) 是一种广泛使用的兽医抗生素,对食品安全有影响.
研究的目的:
- 开发一种基于CRISPR/Cas12a的生物传感器,用于敏感检测ENR.
- 通过间接激活机制来调整CRISPR/Cas12a系统以检测非核酸目标.
- 建立具有高灵敏度的ENR定量检测方法.
主要方法:
- 使用抗体修饰磁纳米粒子 (免疫-MNP) 和DNase I-AuNPs-BSA-ENR复合纳米粒子设计了一种竞争性结合试验.
- 恩洛夫洛克萨 (ENR) 与复合纳米粒子竞争在免疫MNP上的结合位点上.
- 被捕获的DNase I对激活器DNA的降解调节了与光输出相关的CRISPR/Cas12a系统的激活.
主要成果:
- 生物传感器通过竞争性抑制机制成功检测到恩洛夫洛素 (ENR).
- 通过DNase I和CRISPR/Cas12a的双重酶增强导致了高灵敏度.
- 对于ENR,可以达到0.04 ng/mL的低检测极限 (LOD).
结论:
- 开发的生物传感器有效地将CRISPR/Cas12a系统的应用扩展到非核酸目标.
- 该方法提供了一种敏感和定量方法来检测恩洛夫洛克萨 (ENR).
- 这项技术有可能用于环境监测,食品安全和临床诊断.
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