一种基于酶的新型表面等离子体共振生物传感器的潜力,用于直接检测多巴胺
Safoura Jabbari1, Bahareh Dabirmanesh2, Sara Daneshjou3
1Department of Biochemistry and Biophysics, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
Scientific reports
|June 21, 2024
概括
这项研究介绍了一种使用表面等离子体共振 (SPR) 和laccase的新型多巴胺生物传感器. 开发的生物传感器在生物流体中对多巴胺监测具有高灵敏度和特异性.
科学领域:
- 生物医学技术 生物医学技术
- 生物传感器开发开发
- 神经科学是一个神经科学.
背景情况:
- 多巴胺监测在医疗保健和生物医学技术中至关重要.
- 现有的多巴胺检测方法面临局限性.
- 开发敏感和特定的生物传感器是必不可少的.
研究的目的:
- 开发一种使用表面等离子体共振 (SPR) 的新型多巴胺生物传感器.
- 为了优化多巴胺检测条件,使用laccase作为识别元素.
- 评估开发的生物传感器的灵敏度,特异性和性能.
主要方法:
- 将laccase固定在一个carboxymethyl dextran SPR芯片上.
- 针对多巴胺-乳糖酶相互作用的pH优化.
- 分子对接以评估多巴胺-酶亲和力.
- 生物传感器性能的表征,包括线性,检测极限和特异性.
主要成果:
- 在酸性pH值下观察到与laccase的最佳多巴胺相互作用.
- 高动力亲和力 (KD = 48,545 nM),表明强烈的多巴胺-乳酶关联.
- 证明线性从0.01到189μg/ml,低检测极限为0.1 ng/ml.
- 没有观察到来自酸,尿素和L-dopa等同时存在的化合物的显著干扰.
结论:
- 开发的基于SPR的生物传感器提供了一种高度敏感和特定的多巴胺检测方法.
- 这种无标签,简单且具有成本效益的系统代表了多巴胺监测的新工具.
- 生物传感器的性能超过了许多现有的直接多巴胺检测传感器.
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