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菌体激活的DNA酶水凝与机器学习相结合,可实现对大肠杆菌 (Escherichia coli) 的定位色度检测
Hannah Mann1, Shadman Khan2, Akansha Prasad2
1Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada.
Advanced materials (Deerfield Beach, Fla.)
|November 26, 2024
概括
一个新的水凝传感器在环境和临床样本中高精度检测大肠杆菌病原体. 这个具有成本效益,可访问的平台使用DNAzyme技术进行快速,超敏感的病原体测试.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 临床诊断 临床诊断 临床诊断
背景情况:
- 目前的病原体检测方法依赖于耗时的培养.
- 需要可访问,超敏感和快速的使用点测试平台.
- 大肠杆菌 (E. coli) 在环境和临床环境中都是一个重要的病原体.
研究的目的:
- 开发一个具有成本效益和消费者可访问的平台,用于在使用地点进行环境和临床病原体检测.
- 创建一个能够用最小的设备和培训进行超敏感检测的传感器.
- 在各种样本类型中特定检测大肠杆菌 (大肠杆菌).
主要方法:
- 开发了一种颜色测量DNAzyme-crosslinked水凝传感器.
- 在目标病原体存在时,水凝溶解释放被困的黄金纳米粒子以进行视觉检测.
- 使用了对大肠杆菌敏感的DNA酶和菌体诱导的信号放大.
- 整合了一个人工智能模型来分析传感器读数.
主要成果:
- 传感器在湖水样本中检测到10^1 CFU mL^-1 大肠杆菌.
- 人工智能模型实现了96%的真正正确率和100%的真负准确率.
- 该平台表现出高的特异性和稳定性.
- 在患者尿样中识别大肠杆菌的准确性达到100%,在健康样本中没有虚假阳性.
结论:
- DNAzyme交叉连接的水凝传感器为大肠杆菌检测提供了一种敏感,特定和稳定的方法.
- 该平台适用于环境监测和临床诊断.
- 这项技术显著提高了病原体检测的可访问性,可能改善人口健康.
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