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信号启动光生物传感器用于检测miRNA-21 基于ROX标记的特定茎环探针

Somayeh Heidarian¹, Laya Takbiri Osgoei², Shohreh Zare Karizi³

¹Department of Biology, Faculty of Biological Science, North Tehran Branch, Islamic Azad University, Tehran, Iran.

Iranian journal of pharmaceutical research : IJPR

|July 15, 2024

概括

这项研究介绍了一种用于敏感微RNA (miRNA) 检测的新型纳米生物传感器. 基于碳纳米管的传感器通过识别异常miRNA-21表达,使结直肠癌 (CRC) 的早期诊断成为可能.

科学领域:

生物技术是生物技术.
纳米技术纳米技术
分子诊断学分子诊断学

背景情况:

异常的微RNA (miRNA) 表达与瘤进展和转移有关.
准确和快速检测异常miRNA水平对于癌症诊断至关重要.
目前用于miRNA检测的方法可能很复杂,缺乏可移植性.

研究的目的:

开发一种高度敏感和特定的方法来诊断和检测miR-21生物标志物.
创建一个便携式和简单的检测系统,用于异常miRNA表达.
为了研究基于碳纳米管的纳米生物传感器用于癌症检测的潜力.

主要方法:

将ROX染料标记的单链DNA探头固定在多壁碳纳米管 (MWCNT) 上.
在探针吸附到MWCNTs时使用ROX染料的光火.
监测目标miRNA-21与补充DNA (cDNA) 杂交后的光恢复,表明目标存在.

主要成果:

光发射强度显示对miR-21度的线性反应范围从10−9到3.2 × 10−6 M.
开发的光传感器实现了miR-21.1的1.12 × 10−9 M的低检测极限.
传感器在检测目标miRNA时表现出高灵敏度和特异性.

结论:

使用碳纳米管的纳米生物传感器为早期结直肠癌 (CRC) 检测提供了一个高度敏感的平台.
这种方法补充了现有的癌症诊断技术.
开发的传感器为基于miRNA的快速和便携式诊断提供了一个有前途的工具.

关键词:

碳纳米管的使用方法结肠直肠癌结肠直肠癌是什么这是一个微型RNA.在纳米生物传感器.

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