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Yiheng Chen^1,2, Xuejun Wang^1,2, Shi Luo^1,2

¹State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.

Analytical chemistry

|May 15, 2024

概括

我们开发了一种电导向的抗体-石墨烯场效应晶体管 (EOA-gFET),用于高度敏感的生物标志物检测. 这种新型生物传感器实现了微量分子分析报告的最低检测极限,使得疾病快速查.

科学领域:

生物感应是一种生物感应.
纳米技术纳米技术
分子诊断学分子诊断

背景情况:

抗体晶体管对疾病诊断有前途,但由于生物标志物度低,它们很难应对.
检测生物标记物的微量水平仍然是当前生物传感平台面临的重大挑战.

研究的目的:

开发一种高度敏感的石墨烯场效应晶体管 (gFET) 生物传感器,使用电向抗体探针 (EOA-gFET).
为了实现疾病监测的甲基化DNA的超低水平检测.

主要方法:

用电定向抗体探针 (EOA-gFET) 功能化的石墨烯场效应晶体管 (gFET) 的制造.
利用电场将抗体定向在石墨烯上,增强信号放大.
在微量度下量化甲基化DNA.

主要成果:

在EOA-gFET实现了记录低检测极限 (LoD) 约0.12副本μL-1.1.
在6分钟内从临床血清样本中检测出肝癌的可辨别信号.
电场改善了抗体定向和信号生成.

结论:

EOA-gFET代表了微量分子检测生物传感技术的重大进步.
这个平台显示了早期疾病查和诊断的巨大潜力.
该方法提供了快速和高度敏感的生物标志物监测.

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