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相关实验视频

Updated: May 5, 2026

Field-Deployable Candidatus Liberibacter asiaticus Detection Using Recombinase Polymerase Amplification Combined with CRISPR-Cas12a

Field-Deployable Candidatus Liberibacter asiaticus Detection Using Recombinase Polymerase Amplification Combined with CRISPR-Cas12a

Published on: December 23, 2022

将CRISPR-Cas12a与微球阵列增强光相结合,用于便携式病原体核酸检测.

Menglu Gao¹, Chen Yang^2,3, Wu Si¹

¹Department of Laboratory Medicine, Center for Single-Cell Omics and Tumor Liquid Biopsy, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.

ACS applied materials & interfaces

|March 28, 2025

概括

这项研究通过结合微球阵列来增强基于集群定期间隔的短时间Palindromic Repeats (CRISPR) 的测试的光信号强度. 这项创新提高了病原体检测灵敏度,并使COVID-19和Shigella等疾病的快速,经济有效的查成为可能.

关键词:

克里斯普尔是什么意思?克里斯普尔是什么意思?光增强剂光增强剂这些微球是微球.核酸检测核酸检测检测病原体检测检测病原体的检测

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Author Spotlight: Development of Simplified CRISPR-Based Tests for Rapid Detection of Infectious Diseases

Author Spotlight: Development of Simplified CRISPR-Based Tests for Rapid Detection of Infectious Diseases

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Field-Deployable Candidatus Liberibacter asiaticus Detection Using Recombinase Polymerase Amplification Combined with CRISPR-Cas12a

Field-Deployable Candidatus Liberibacter asiaticus Detection Using Recombinase Polymerase Amplification Combined with CRISPR-Cas12a

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科学领域:

生物技术和生物传感技术
分子诊断学分子诊断学
食品安全食品安全

背景情况:

公共卫生依赖于快速和灵敏地检测食品污染和病原体.
基于CRISPR的核酸检测试验具有高特异性,但需要提高灵敏度.
现有的研究重点是Cas蛋白精制和crRNA优化,以提高CRISPR测定灵敏度.

研究的目的:

从物理角度介绍一种用于增强基于CRISPR的测试中的光信号输出的新策略.
开发一种实用且具有成本效益的方法来降低CRISPR分析中的检测值.
创建一个多功能平台,用于在各种环境中快速检测病原体.

主要方法:

集成的微球阵列进入微流体芯片,通过自组装放大光信号.
用于重组酶聚合酶放大 (RPA) 用于目标序列放大.
利用CRISPR-Cas酶活性在FAM标记的记者上,由crRNA结合触发信号生成,使用智能手机检测到.

主要成果:

成功识别了SARS-CoV-2和*Shigella*样本,包括临床和食品污染源.
达到低检测极限 (LoD):SARS-CoV-2的75 fM和*Shigella*的100 fM (通过POCT USB摄像头进一步改进).
在小样本验证中证明了100%的灵敏度和特异性,并结合了便携式和自动检测.

结论:

开发的方法提供了一种高效和具有成本效益的策略,用于增强基于CRISPR的测试中的光信号.
该平台适用于冷链食品,社区医院和资源有限的地区的病原体检测.
这种方法为推进CRISPR光传感器商业化和在各种环境中的实际应用提供了一个范例.