基于上转换纳米粒子和量子点的双模式生物传感器与信号放大策略相结合,用于检测miRNAs
Mingjie Li1, Longcan Chen1, Xin Lin2
1Shengli Clinical Medical College of Fujian Medical University, Fuzhou 350122, China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|October 28, 2025
概括
一个新的双信号生物传感器检测miRNA-21,一个肺癌生物标志物,使用aptamers和纳米材料. 这种敏感的平台为肺癌患者提供了准确的早期检测和治疗监测.
科学领域:
- 生物医学工程 生物医学工程
- 分子诊断学 分子诊断学
- 纳米技术纳米技术
背景情况:
- 微RNAs (miRNAs) 调节关键的细胞过程,并与癌症的发展有关.
- miRNA-21在肺癌患者的血清中升级,表明其作为生物标记物的潜力.
- 精确检测miRNA-21对于早期肺癌诊断和治疗至关重要.
研究的目的:
- 开发一个敏感和准确的双信号生物传感平台,用于miRNA-21检测.
- 为了利用aptamers,催化组件 (CHA) 和纳米材料增强的阴离子交换反应 (CERs) 来进行信号放大.
- 为了验证生物传感器在血清等生物样本中的性能.
主要方法:
- 一个双信号生物传感器是使用aptamers进行miRNA-21识别的.
- 催化式发针组件 (CHA) 用于信号放大.
- 纳米材料增强的阴离子交换反应 (CER) 涉及银离子和量子点被用于双模式检测 (UCL/FL).
主要成果:
- 双模式生物传感器实现了较低的检测极限:0.096 nM用于上转换发光 (UCL) 和0.428 nM用于光 (FL).
- 该平台在人类血清样本中检测miRNA-21的准确性很高,恢复率在99.3%至105.8%之间.
- 生物传感器有效地集成了UCL和FL信号,提高了检测灵敏度.
结论:
- 开发的双模式生物传感器为miRNA-21检测提供了灵敏而准确的方法.
- 这一平台对肺癌的早期诊断和治疗监测具有显著的前景.
- 将CHA和CER与纳米材料集成为生物样本中的生物标志物分析提供了一种多功能策略.
更多相关视频
07:13Author Spotlight: High-Quality Quantum Dot Nanobeads for Sensitive Fluorescent Lateral Flow Immunoassays
Published on: June 28, 2024
2.1K
09:06MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as A Novel Detection and Quantification Method
Published on: October 7, 2025
335
相关概念视频
Proteomics
7.5K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
7.5K
Microbial Biosensors
88
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
88
