用铜合的NH2金属有机框架作为敏感电化学发光免疫测试的协同反应剂调节单元
Shuai-Fei Zhang1, Yu-Ling Wang1, Xiao-Long Fu1
1College of Chemistry and Chemical Engineering, Xinyang key laboratory of functional nanomaterials for bioanalysis, Xinyang Normal University, Xinyang 464000, China. wyl199499@126.com.
The Analyst
|March 17, 2025
概括
一种新的电化学发光 (ECL) 免疫传感器使用一种新的金属有机框架纳米探针检测前列腺特异性抗原 (PSA). 这种方法在人血清中提供了灵敏而可靠的PSA检测.
科学领域:
- 分析化学 分析化学
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
背景情况:
- 前列腺特异性抗原 (PSA) 是前列腺癌检测的关键生物标志物.
- 现有的PSA检测方法往往在灵敏度,特异性或成本效益方面面临限制.
- 开发灵敏可靠的生物传感器对于早期疾病诊断至关重要.
研究的目的:
- 开发一种易于和敏感的电化学发光 (ECL) 免疫传感器,用于前列腺特异性抗原 (PSA) 检测.
- 使用一种协同反应物的调制策略,采用一种改性金属有机框架 (MOF) 的纳米探针.
- 为了验证传感器在检测人类血清样本中PSA的性能.
主要方法:
- 构建一个Cu2+修改的NH2-金属有机框架 (NMOF@Cu2+) 的纳米探针.
- 用PSA标记纳米探针,以形成一个PSA-NMOF@Cu2+结合物.
- 在分型模式下实施竞争性免疫试验,使用明醇-K3[Fe(CN) 6]ECL系统.
- 基于消耗的K3[Fe(CN) 6对ECL信号的调制来量化PSA.
主要成果:
- 开发的ECL免疫传感器在PSA检测方面表现出高灵敏度.
- 实现了 1.0 pg mL-1 到 10 ng mL-1 的线性响应范围.
- 获得了PSA低检测极限0.5 pg mL-1.
- 该方法显示可用于人类血清中的PSA测定.
结论:
- 基于纳米探针的NMOF@Cu2+ECL免疫传感器为PSA检测提供了一个灵敏且易用的平台.
- 协同反应物的调制策略有效地提高了传感器的性能.
- 这种方法对前列腺癌的临床诊断有前途.
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