开发高灵敏光传感器,用于无分离检测和量化系统的素酶应用结构导向方法的高度灵敏光传感器的开发
Aya M Mostafa1,2, Stephen J Barton1, Stephen P Wren1
1School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston upon Thames, London KT1 2EE, UK.
Biosensors
|March 27, 2024
概括
两种新的光分子印记聚合物 (MIP) 为素检测而创建. 与基于素的MIP相比,基于罗达胺B的MIP显示了增强的结合能力和更高的敏感性.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 分子印记聚合物 (MIP) 是具有定制识别特性的合成受体.
- 光MIP为敏感分析物检测提供了优势.
- 素是一种关键蛋白酶,是各种生理和病理条件中的重要生物标志物.
研究的目的:
- 开发和比较两个光MIP用于使用光素和罗达胺B染料检测素.
- 调查罗达胺B的功能组对MIP选择性和敏感性的影响.
- 建立生物样本中素的无分离量化方法.
主要方法:
- 使用3-aminopropyltriethoxysilane和四甲酸盐的一合成基于二氧化的MIP.
- 加入光素和罗达胺B作为光标签.
- MIP的结合能力,敏感性和选择性的特征.
- 在无分离系统中应用MIP用于唾液中的素量化.
主要成果:
- 基于罗达胺B的MIPs (RMIPs) 具有比基于光素的MIPs (FMIPs) (217 mg g-1) 更高的结合能力 (256 mg g-1).
- RMIPs表现出优越的灵敏度,其线性检测范围为0.2842.85 μmol L-1和0.11 μmol L-1.1的低检测极限 (LOD).
- FMIPs具有更窄的线性范围 (0.7135.71 μmol L-1) 和更高的LOD (0.34 μmol L-1).
- 无论是FMIP还是RMIP,都可以在唾液样本中进行无干扰的素量化.
结论:
- 罗达胺B是一种更有效的光染料,用于开发对素高度敏感和选择性的MIP.
- 开发的MIP为复杂矩阵中快速有效检测素提供了一个有前途的平台.
- 该研究强调了染料分子中功能组修饰的潜力,以提高MIP性能.
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