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Updated: May 2, 2026

Fabrication of Electrochemical-DNA Biosensors for the Reagentless Detection of Nucleic Acids, Proteins and Small Molecules

Fabrication of Electrochemical-DNA Biosensors for the Reagentless Detection of Nucleic Acids, Proteins and Small Molecules

Published on: June 1, 2011

通过在场效应晶体管生物传感器上通过氨基与二醇交叉链接进行特定站点的阿帕特默固定,用于皮质醇检测

Hiroki Hayashi¹, Akane Ishikawa¹, Ayaka Osakada¹

¹Graduate School of Advanced Science and Engineering, Waseda University, Okubo 3-4-1, Shinjuku-ku, Tokyo 169-8555, Japan.

Colloids and surfaces. B, Biointerfaces

|June 7, 2025

概括

这项研究提出了一种新的方法,可以在场效应晶体管 (FET) 生物传感器上固定DNA体. 这种方法可以在纳米分子水平上敏感检测压力激素皮质醇.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
分子生物学分子生物学

背景情况:

场效应晶体管 (FET) 生物传感器为生物标志物检测提供了潜力.
作为单链DNA的aptamers是FET生物传感器的有效生物受体.
在FET表面上不移动aptamers对于检测目标分子至关重要.

研究的目的:

为了研究一种新的方法,将醇终结的阿巴体固定在FET表面上.
为了使皮质醇的特定检测使用aptamer功能化的FET生物传感器.

主要方法:

使用了N-succinimidyl 3-(2-pyridyldithio) propionate (SPDP) 作为氨基与硫醇结合的交叉链接剂.
在FET门表面上,固定在氨基酸终结的自组装单层 (SAM) 上,固定在醇终结的阿胺上.
通过二硫化物结合制造的aptamer固定FETs用于皮质醇检测.

主要成果:

实现了aptamers的终端固定,促进了目标捕获和构造变化.
在纳米分子范围内使用制造的aptamer-FET生物传感器证明了特定的皮质醇检测.
证实了SPDP交叉链接器对于aptamer固定化的有效性.

结论:

开发的固定化策略对于基于aptamer的FET生物传感器是有效的.
这种方法可以对皮质醇等生物标志物进行敏感和特定的检测.
体-FET生物传感器在人类健康监测应用中表现有前途.

关键词:

氨基与硫醇的结合.亚普特美尔 (Aptamer) 是一种药物.生物传感器是一种生物传感器.场效应晶体管的领域效应晶体管.固定化固定化固定化

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