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基于表面阻断的电位计生物传感器用于检测E. 大肠杆菌ATCC 15597使用菌体MS2作为受体

Kaikai Wang^1,2, Rongning Liang¹, Wei Qin^1,3,4

¹CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, P. R. China.

|October 23, 2024

概括

一个新的电位计传感协议使生物分析物的无标签检测成为可能. 这种方法使用延迟的Nernstian反应来敏感和选择性检测目标,如大肠杆菌 (E. coli) H.

科学领域:

电化学电化学电化学
生物感应是一种生物感应.
分析化学分析化学

背景情况:

使用电位离子传感器检测生物分析物是具有挑战性的,因为缺乏可测量的离子信号.
现有的方法通常需要标签或复杂的程序来检测生物分析物.

研究的目的:

为生物分析物开发一种简单,强大,无标签的电位计传感协议.
为了证明使用延迟的Nernstian响应进行敏感和选择性检测的可行性.

主要方法:

一个双层传感器平台,结合了表面识别层和指示离子选择电极 (ISE) 膜.
使用表面阻断机制,在目标识别阻碍指示离子扩散的情况下,导致延迟的潜在变化.
采用菌体MS2,大肠杆菌 (E. coli) H,以及一个丁胆ISE用于传感器开发和测试.

主要成果:

成功地证明了一个延迟的Nernstian响应用于电位检测.
通过高灵敏度和选择性实现了对大肠杆菌H的无标签检测.
已经为大肠杆菌H.确定了100 CFU mL-1的检测极限.

结论:

拟议的延迟Nernstian响应协议为生物分析物检测提供了一种简单有效的方法.
这种方法有可能在临床和环境环境中检测各种非离子生物点.
这项研究为离子选择性电极 (ISE) 在生物传感中的更广泛应用铺平了道路.

关键词:

细菌检测检测细菌的检测延迟的纳尔斯蒂安反应菌体菌体是一种菌体.聚合物膜离子选择电极的电极.表面阻塞效应影响表面阻塞效应.

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