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Loop-Mediated Isothermal Amplification-Coupled Glass Nanopore Counting Toward Sensitive and Specific Nucleic Acid
Zifan Tang1, Gihoon Choi1, Reza Nouri1
1Department of Electrical Engineering , Pennsylvania State University , University Park , Pennsylvania 16802 , United States.
Nano Letters
|October 29, 2019
Summary
This study introduces a novel loop-mediated isothermal amplification (LAMP)-coupled glass nanopore strategy for label-free single-molecule analysis. This method overcomes challenges in nanopore sensing, enabling rapid, low-cost nucleic acid testing.
Area of Science:
- Nanotechnology
- Biotechnology
- Analytical Chemistry
Background:
- Solid-state nanopores are promising for label-free single-molecule analysis.
- Existing challenges include nanopore size variation, sensor specificity, and slow analysis times at low concentrations.
- Diffusion-limited mass transport hinders efficient analysis.
Purpose of the Study:
- To develop a novel loop-mediated isothermal amplification (LAMP)-coupled glass nanopore counting strategy.
- To address challenges in nanopore sensing, including size variation, specificity, and analysis time.
- To enable sensitive and specific nucleic acid testing.
Main Methods:
- Utilizing glass nanopores in counting mode, easing fabrication requirements.
- Employing loop-mediated isothermal amplification (LAMP) for specific molecule replication.
- Coupling LAMP with nanopore counting for enhanced detection.
Main Results:
- The developed strategy effectively addresses nanopore size variations by using counting mode.
- Specific molecule replication via LAMP overcomes diffusion-limited mass transport.
- Demonstrated potential for both qualitative and quantitative nucleic acid testing.
Conclusions:
- The LAMP-coupled glass nanopore counting strategy offers a robust solution for nanopore sensing challenges.
- This approach enables compact, rapid, and low-cost nucleic acid testing at the point of care.
- The strategy is adaptable to various amplification methods for specific target replication.
