Related Experiment Video
Updated: Feb 13, 2026

Nanopore DNA Sequencing for Metagenomic Soil Analysis
Published on: December 14, 2017
Analyte-Triggered DNA-Probe Release from a Triplex Molecular Beacon for Nanopore Sensing
Bingyuan Guo1,2,3, Yingying Sheng1, Ke Zhou2
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Researchers developed a novel nanopore sensing strategy using triplex molecular beacons for detecting DNA and proteins. This method offers a sensitive, selective, and rapid tool for macromolecule detection, potentially aiding point-of-care diagnostics.
Area of Science:
- Nanotechnology
- Molecular Biology
- Biosensing
Background:
- Accurate detection of specific DNA and multivalent proteins is crucial for diagnostics.
- Existing methods may lack sensitivity, speed, or modularity.
Purpose of the Study:
- To develop a new nanopore sensing strategy for detecting specific DNA or multivalent proteins.
- To create a simple, quick, and modular tool for macromolecule detection.
Main Methods:
- Utilized a triplex-forming molecular beacon and a stem-forming DNA component with a host-guest complex.
- Target binding triggers DNA probe release.
- Translocation of the released probe through α-hemolysin generates characteristic current signals.
Main Results:
- The frequency of current signatures correlates with target molecule concentration.
- Demonstrated high sensitivity and excellent selectivity for macromolecule detection.
- The system provides a simple and quick sensing approach.
Conclusions:
- The developed nanopore sensing strategy is effective for detecting specific DNA and multivalent proteins.
- This modular approach offers a sensitive and selective method for macromolecule analysis.
- Potential applications in point-of-care diagnostics with portable nanopore kits.
More Related Videos
15:01Quantitative, Real-time Analysis of Base Excision Repair Activity in Cell Lysates Utilizing Lesion-specific Molecular Beacons
Published on: August 6, 2012
12:20Real-time Imaging of Single Engineered RNA Transcripts in Living Cells Using Ratiometric Bimolecular Beacons
Published on: August 6, 2014
Related Concept Videos
Labeling DNA Probes
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...
The Sense of Self: Reflected Self-Appraisal and Social Comparison
Molecular Chaperones and Protein Folding
The...
Translesion DNA Polymerases
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
Development of Analytical Methods
Introduction to Special Senses