相关实验视频

Updated: Sep 10, 2025

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis

Published on: April 25, 2022

用于多重检测miRNA的ECL-CRISPR阵列

Keshani Hiniduma¹, P I Thilini De Silva¹, Rachelle Canete¹

¹Department of Chemistry and Institute of Materials Science, University of Connecticut, Storrs, CT, 06269-3060, USA.

Biosensors & bioelectronics

|August 23, 2025

概括

这项研究引入了基于CRISPR/Cas13a的电化学发光 (ECL) 阵列,用于检测阿尔茨海默病 (ALZ) 微RNA. 这种新型的生物传感器提供了高度敏感和特定的miRNA生物标志物的检测.

科学领域:

生物医学工程
分子生物学
分析化学

背景情况:

微RNAs (miRNAs) 是阿尔茨海默病 (AD) 的重要生物标志物.
现有的miRNA检测方法往往缺乏灵敏度,特异性或需要复杂的仪器.
CRISPR/Cas13a系统提供可编程的RNA定位能力.

研究的目的:

开发一种新的电化学发光 (ECL) 阵列,用于敏感和特异性检测与阿尔茨海默病 (AD) 相关的miRNA.
在ECL平台中利用CRISPR/Cas13a系统进行miRNA识别和信号放大.
验证开发的阵列在生物样本中检测特定的AD miRNA生物标志物的性能.

主要方法:

与CRISPR/Cas13a集成的3D打印ECL阵列的开发.
目标miRNA与Cas13a结合,激活其RNase活性,从而分裂聚- r- guanosine (聚- r- G).
聚-r-G的裂变会产生ECL激活器,这些激活器可以增强基膜 (RuPVP) 的信号输出.

主要成果:

该ECL阵列成功检测到三个阿尔茨海默病 (AD) 的miRNA生物标志物 (miR30e-5p,miR34c-3p,miR200c-5p).
达到从0.074 fg/mL到42 pg/mL的超低检测极限.
已证明高灵敏度,宽线性动态范围 (70 pg/ mL至70 μg/ mL),与基于光的CRISPR方法有很好的相关性.

结论:

基于CRISPR/Cas13a的ECL阵列为检测AD miRNA生物标志物提供了一个高度敏感和特定的平台.
这种创新方法对早期诊断和阿尔茨海默病的监测具有前景.
3D打印的阵列设计为临床诊断中的多重生物标志物检测提供了潜力.

更多相关视频

Performing Custom MicroRNA Microarray Experiments

Performing Custom MicroRNA Microarray Experiments

Published on: October 28, 2011

Profiling of Pre-micro RNAs and microRNAs using Quantitative Real-time PCR qPCR Arrays

Profiling of Pre-micro RNAs and microRNAs using Quantitative Real-time PCR qPCR Arrays

Published on: December 3, 2010

相关概念视频

CRISPR and crRNAs

CRISPR and crRNAs

Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...

DNA Microarrays

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...