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双响应的3D DNA纳米机级联混合化连锁反应,用于新型自动供电的柔性微RNA检测平台

Futing Wang¹, Chunxiao Zhang¹, Suping Deng²

¹Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Material Science and Engineering, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, 410082, China.

Biosensors & bioelectronics

|February 23, 2024

概括

这项研究介绍了一种用于检测微RNA-21 (miRNA-21) 的新型生物传感器,这是一个关键的表观遗传调节器. 开发的设备提供了对miRNA-21的高度敏感和实时监测,对于瘤标志物分析至关重要.

科学领域:

生物技术是生物技术.
纳米技术纳米技术
分子生物学分子生物学

背景情况:

微RNA-21 (miRNA-21) 参与染色体重塑和表观遗传调节.
精确检测miRNA-21对于了解它在癌症等疾病中的作用至关重要.

研究的目的:

开发一个高效和灵敏的生物传感平台,用于实时监测miRNA-21.
利用一种新的双响应3D DNA纳米机器 (DRDN) 进行增强的miRNA-21捕获和检测.

主要方法:

在聚胺 (PI) 薄膜上制造灵活的激光编写石墨烯 (LSG) 电极.
在金纳米粒子 (AuNPs) 上组装一个双响应的3D DNA纳米机器 (DRDN),用于miRNA-21捕获和回收.
将DRDN与基于电容器的自动供电生物传感平台集成,用于实时电流监控.

主要成果:

生物传感平台实现了miRNA-21的高度敏感检测,在广泛的动态范围 (0.5 fM到1 × 10^4 fM) 上的检测极限为0.142 fM.
该系统通过显示增加的瞬时电流来证明实时监控能力.
该平台在分析瘤标记物方面表现出高效率.

结论:

开发的DRDN集成的LSG生物传感器为miRNA-21检测提供了一个敏感,灵活和自动供电的平台.
这项技术有望通过分析像miRNA-21.21这样的表观遗传调节剂来早期诊断和监测癌症.

关键词:

双响应的3D DNA纳米机器高效率的高效率的高效率.杂交连锁反应的杂交链反应激光写入的石墨烯.实时监控监控器实时监控器

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