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Updated: Jun 27, 2025

Simple Bulk Readout of Digital Nucleic Acid Quantification Assays

Simple Bulk Readout of Digital Nucleic Acid Quantification Assays

Published on: September 24, 2015

Tunable nanofluidic device for digital nucleic acid analysis.

Imman I Hosseini¹, Seyed Vahid Hamidi¹, Xavier Capaldi²

¹Department of Biomedical Engineering, McGill University, 3775 Rue University, Montreal, Quebec H3A 2B4, Canada. sara.mahshid@mcgill.ca.

|April 29, 2024

Summary

This summary is machine-generated.

This study introduces a novel nanofluidic device for rapid nucleic acid (NA) detection. It enables efficient NA capture and enzymatic reactions within digital nanocavities, overcoming previous loading and retention challenges for diagnostics.

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Published on: September 27, 2016

Area of Science:

Biotechnology
Nanotechnology
Molecular Diagnostics

Background:

Nano/microfluidic devices offer rapid nucleic acid (NA) detection but face challenges in sample loading and NA retention for enzymatic reactions.
Current methods often require pre-treatment or external actuators, limiting their efficiency and applicability.

Purpose of the Study:

To develop a nanofluidic device with real-time confinement control for efficient NA capture and enzymatic processing.
To demonstrate the loading, retention, and enzymatic exposure of target NAs within digital nanocavities.

Main Methods:

Utilized a nanofluidic device with pneumatic actuation for real-time control of membrane-based confinement.
Demonstrated target NA loading into digital nanocavities and subsequent enzymatic access.
Employed loop-mediated isothermal amplification and rolling circle amplification for DNA amplification within nanocavities.

Main Results:

Successfully loaded target nucleic acids into digital nanocavities.
Achieved retention and simultaneous exposure of captured NAs to enzymes and co-factors.
Demonstrated isothermal amplification of single-stranded DNA (M13mp18 plasmid vector) within the nanocavities.

Conclusions:

The developed nanofluidic device effectively addresses NA loading and retention challenges in confined volumes.
This technology shows promise for advanced, pre-treatment-free nucleic acid diagnostic applications.