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单颗粒等离子体传感器用于实时监测蛋白分解活性

Rui Oliveira-Silva^1,2,3, Yuyang Wang¹, Sjoerd W Nooteboom¹

¹MBx Molecular Biosensing, Department of Applied Physics and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.

ACS applied optical materials

|November 2, 2023

概括

这项研究引入了一种无标签的等离子体传感器,用于实时监测血栓活性. 金纳米传感器检测低血栓水平,有助于出血障碍诊断和药物研究.

科学领域:

生物物理学的生物物理.
纳米技术纳米技术
生物化学生物化学

背景情况:

蛋白质分解活性在生物过程中至关重要.
血栓素在血液凝固中起着关键作用.
实时监测酶活性对于诊断至关重要.

研究的目的:

开发一种无标签的等离子体传感器,用于实时监测血栓蛋白质分解活性.
描述传感器的性能和运动参数.
探索诊断和生化研究中的应用.

主要方法:

一个随机的金纳米棒阵列的制造,其功能与ombin-cleavable.
实时监控单个纳米棒中的等离子体移位.
动力建模以了解传感器响应.

主要成果:

传感器在血栓分裂时显示了等离子体共振中的实时蓝移.
动力学分析显示,裂和血栓结合之间存在竞争.
传感器实现了两个数量级以上的动态范围,检测到低至3nM的血栓.
检测出了生理上相关的活性血素水平.

结论:

开发的等离子体传感器提供了一种敏感且无标签的方法来量化血栓活性.
这项技术在诊断出血障碍和药理学研究中具有潜在的应用.
传感器能够实时监测酶活性,这为生物化学研究开辟了新的途径.

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