基于集成的FeOOH-Au-MB探针的双模式电化学色度免疫传感器,用于敏感的公素检测
Yueyuan Li1,2,3, Xiaoying Wu4, Yunxia Wang2
1Department of Energy and Power Engineering School of Mechanical Engineering, Tianjin University, Tianjin, 300354, People's Republic of China. xinli.lu@tju.edu.cn.
Analytical methods : advancing methods and applications
|November 13, 2025
概括
我们开发了一种新的双模式免疫传感器,使用铁氧化微盒和金纳米颗粒来增强败血症生物标志物检测. 这种无试剂的探针为临床诊断提供了更高的准确性和可靠性.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 分析化学 分析化学
背景情况:
- 双模式检测机制提高了免疫传感的准确性,但面临复杂的施工挑战.
- 多种分析原理的协调适应在技术上要求很高.
研究的目的:
- 开发一种新的,无试剂的双模式免疫传感器,用于灵敏,可靠地检测败血症生物标志物 procalcitonin (PCT).
- 为了克服将多个检测原则集成到单个免疫传感平台中的复杂性.
主要方法:
- 使用金纳米粒子修饰的铁氧化 (FeOOH) 微盒和装有甲蓝 (Au-MB) 的多功能探头的制造.
- 利用电化学检测通过甲蓝信号放大和色度检测通过普鲁士蓝色形成从释放的Fe3+离子.
- 集成了双模式自我校准功能,以提高可靠性.
主要成果:
- FeOOH-Au-MB探测器显示了显著的电化学信号放大和可见的颜色变化,用于色度检测.
- 实现了PCT的广泛检测范围 (1.0 pg mL-1到50 ng mL-1).
- 报告的低检测极限:0.28 pg mL-1 (电化学) 和0.42 pg mL-1 (色度测量).
结论:
- 开发的双模式免疫传感器为PCT检测提供了更高的灵敏度,可靠性和准确性.
- 这种无试剂的,自我校准的探针为毒症的临床诊断提供了一个有前途的工具.
- 这种方法简化了多种传感原理的集成,用于先进的免疫传感应用.
更多相关视频
07:13Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays
Published on: June 28, 2024
2.1K
09:51TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples
Published on: September 19, 2025
331
相关概念视频
01:33Enzyme-Linked Immunosorbent Assay
In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or quantified.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or quantified.
01:18Effects of EDTA on End-Point Detection Methods
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...