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Updated: Sep 19, 2025

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

细胞传感通过体/单链DNA探头修饰或印电极进行细胞传感

Kazuharu Sugawara¹, Kenta Takeda¹, Hideki Kuramitz²

¹Department of Life Engineering, Maebashi Institute of Technology, Gunma, 371-0816, Japan.

Chembiochem : a European journal of chemical biology

|June 17, 2025

概括

一种新型的单链DNA探针使用电子转移和His-tag来检测癌细胞. 这种方法在生物样本中准确量化K562白血病细胞,具有高灵敏度和恢复.

科学领域:

生物传感器和电化学检测仪
癌细胞诊断癌细胞诊断
核酸亚胺技术的核酸亚胺技术

背景情况:

早期和准确的癌细胞检测对于有效的治疗至关重要.
现有的癌细胞检测方法可能是复杂和耗时的.
对于临床应用,需要开发敏感和特定的生物传感器.

研究的目的:

设计和合成一种用于癌细胞检测的新型单链DNA (ssDNA) 探针.
将探头固定在Au屏幕打印电极 (AuSPE) 上,用于电化学传感.
评估探针在检测人类髓性白血病细胞 (K562) 的性能.

主要方法:

一个ssDNA探针的设计,其中包含电子转移和His-tag用于传感和净化.
结合KK1B10胺基与用于细胞识别的序列.
将合成的探头固定在AuSPE上,并对K562细胞相互作用进行电化学分析.

主要成果:

优化的探头,Ac-CYYCYYCH6-AmC6-KK1B10吸收器,表现出卓越的性能.
随着K562细胞度的增加,电极响应比例下降.
实现了广泛的检测范围 (5-200 细胞/毫升) 与低的检测极限 (2 细胞/毫升).
在人血清和牛血样中观察到高恢复率 (99%-102%).

结论:

开发的基于ssDNA探头的电化学传感器非常灵敏,专门用于癌细胞检测.
该方法对复杂的生物矩阵中白血病细胞的快速和准确量化有希望.
这种方法为开发先进的癌症诊断工具提供了一个可行的平台.

关键词:

K562 细胞 K562 细胞细胞感应细胞感应电子转移是一种电子转移.幕打印电极的电极.一个单链DNA的DNA.

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