脱氧核糖核酸激活器触发的力驱动的催化剂调节的CRISPR/Cas12a基于便携式生物传感器,用于同时检测多种致病细菌.
Shuai Liu1, Zishan Ding1, Xing Lu1
1Department of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P. R. China.
ACS sensors
|February 26, 2026
概括
一个新的便携式生物传感器使用CRISPR/Cas12a技术快速检测多种抗生素耐药细菌 (ARB). 这种超敏感的平台为临床诊断和公共卫生监测提供了快速,经济高效的解决方案.
科学领域:
- 生物技术是生物技术.
- 分子诊断学 分子诊断
- 生物感应是一种生物感应.
背景情况:
- 抗生素耐药细菌 (ARB) 构成了严重的全球健康威胁.
- 对ARB的快速和敏感的检测方法对于有效的临床和公共卫生干预至关重要.
- 目前的检测方法可能耗时,缺乏早期识别所需的灵敏度.
研究的目的:
- 开发一款便携式,超灵敏,快速的生物传感器,用于同时检测多个ARB.
- 通过使用CRISPR/Cas12a和驱动催化来增强信号放大和检测灵敏度.
- 整合一个3D打印的微流体芯片和智能手机读数,以实现实际应用.
主要方法:
- 基于CRISPR/Cas12a的便携式DNA激活器触发的驱动催化剂调制的传感器 (PSDA) 的构建.
- 利用CRISPR/Cas12a介导的信号传导与特定目标DNA激活器和驱动的动态DNA网络进行信号放大.
- 集成了一个3D打印的微流体芯片与Zn2GeO4:Mn持久发光纳米粒子和智能手机读取系统.
主要成果:
- 在PSDA平台实现了超敏感和快速的同时检测甲素耐药黄金葡萄球菌,耐卡巴胺的Pseudomonas aeruginosa和KPC-2表达的Klebsiella pneumoniae.
- 显示了广泛的动态范围 (1-10^7 CFU/mL) 和超低的检测极限 (1 CFU/mL).
- 与传统方法 (95.48-115.15%) 相比,分析时间约为45分钟,一致性高.
结论:
- 开发的PSDA生物传感平台提供了一个具有成本效益的,快速响应的解决方案,用于同时检测ARB.
- 这项技术在临床诊断,食品安全监测和环境监测方面有直接应用.
- 传感器的便携性和敏感性解决了及时识别ARB的关键挑战.
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