An Aptamer-Functionalised Schottky-Field Effect Transistor for the Detection of Proteins.

An Aptamer-Functionalised Schottky-Field Effect Transistor for the Detection of Proteins.
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DOI:
10.3390/bios12050347
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发表时间:
2022-05-18
期刊:
Biosensors
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其他
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2019 年 12 月爆发的 2019 冠状病毒病 (COVID-19) 凸显了对灵活传感系统的需求,该系统可以快速、准确地确定与该疾病相关的生物标志物的存在。该传感系统还需要能够轻松适应新疾病以及现有疾病的变化。在这里,我们报告了使用简单、低成本的硅场效应晶体管的可行性,该晶体管具有适体功能,并被设计用于附着于 SARS-CoV2 的刺突蛋白。结果表明,在 100 fM 至 10 pM 的浓度范围内可获得线性响应。此外,与其他基于 FET 的传感器相比,通过使用更大范围的源极-漏极电势,可以查看更广泛的器件参数来优化响应。
The outbreak of the coronavirus disease 2019 (COVID-19) in December 2019 has highlighted the need for a flexible sensing system that can quickly and accurately determine the presence of biomarkers associated with the disease. This sensing system also needs to be easily adaptable to incorporate both novel diseases as well as changes in the existing ones. Here we report the feasibility of using a simple, low-cost silicon field-effect transistor functionalised with aptamers and designed to attach to the spike protein of SARS-CoV2. It is shown that a linear response can be obtained in a concentration range of 100 fM to 10 pM. Furthermore, by using a larger range of source-drain potentials compared with other FET based sensors, it is possible to look at a wider range of device parameters to optimise the response.
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