相关实验视频

Updated: Jul 16, 2025

The Visual Colorimetric Detection of Multi-nucleotide Polymorphisms on a Pneumatic Droplet Manipulation Platform

The Visual Colorimetric Detection of Multi-nucleotide Polymorphisms on a Pneumatic Droplet Manipulation Platform

Published on: September 27, 2016

PNA-Pdx:基于核酸的多功能片核酸检测核酸和SNP

Wenjun Jiang¹, Rashid Aman¹, Zahir Ali¹

¹Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.

Analytical chemistry

|September 11, 2023

概括

一个新的核酸 (PNA) 工具包,PNA驱动的诊断 (PNA-Pdx),快速而灵敏地检测病原体和遗传突变. 这种新的方法可以在没有PAM限制的情况下精确检测核酸和单核酸多态 (SNP).

科学领域:

分子生物学分子生物学
生物技术是生物技术.
基因组学就是基因组学.

背景情况:

准确和快速检测核酸序列对于疾病监测至关重要.
现有的病原体和突变检测方法在灵敏度和速度方面存在局限性.

研究的目的:

引入一种基于核酸 (PNA) 的新型工具包,PNA-powered diagnostics (PNA-Pdx),用于敏感和特定的核酸检测.
证明PNA-Pdx在病原体识别和单核酸多态 (SNP) 基因定型方面的实用性.

主要方法:

开发PNA探针,用于特定结合目标核酸序列.
集成PNA探针与横流测定检测.
使用PNA探针来促进基于CRISPR-Cas12b的SNP检测,包括双链DNA (dsDNA) 中的SNP.

主要成果:

对于目标核酸序列,PNA-Pdx的检测极限低至2个副本/μL.
该工具包在40分钟内准确地检测到临床样本中的SARS-CoV-2基因组.
通过PNA介导的dsDNA入侵使CRISPR-Cas12b能够准确地检测基因组SNP,而无需对原空间邻动机 (PAM) 的限制.

结论:

PNA-Pdx为核酸和SNP检测提供了一个多功能和强大的工具包.
工程 PNA 探针增强了核酸检测的能力,比传统方法提供了优势.

更多相关视频

Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection

Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection

Published on: February 9, 2024

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Published on: September 21, 2017

相关概念视频

Labeling DNA Probes

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...