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Related Experiment Video

Updated: Jul 19, 2026

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1

Published on: March 13, 2018

A DNA biochip for on-the-spot multiplexed pathogen identification.

Siu-Wai Yeung¹, Thomas Ming-Hung Lee, Hong Cai

¹Department of Chemical Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.

Nucleic Acids Research

|September 27, 2006

Summary

This study presents a novel single microchamber for integrated DNA analysis, enabling rapid, on-site pathogen detection. The system combines sample prep, amplification, and electrochemical detection for multiplexed identification of bacteria.

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Last Updated: Jul 19, 2026

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1

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Published on: March 13, 2018

Visual Detection of Multiple Nucleic Acids in a Capillary Array

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Published on: November 15, 2017

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis

A Microfluidic-based Electrochemical Biochip for Label-free DNA Hybridization Analysis

Published on: September 10, 2014

Area of Science:

Biotechnology
Microfluidics
Biosensors

Background:

Traditional DNA analysis systems use multi-chamber designs, hindering point-of-care applications.
Microchip designs with integrated optics present deployment challenges for field use.

Purpose of the Study:

To develop a single microchamber for integrated sample preparation, DNA amplification, and electrochemical detection.
To demonstrate multiplexed detection of Escherichia coli and Bacillus subtilis cells for on-site monitoring.

Main Methods:

A silicon and glass microchamber with integrated thin-film heater, temperature sensor, and indium tin oxide (ITO) electrodes.
Electrochemical immobilization of specific oligonucleotide probes onto ITO surfaces.
Integrated workflow including thermal lysis, magnetic particle-based DNA isolation, asymmetric PCR, and silver-enhanced gold nanoparticle-based electrochemical detection.

Main Results:

Demonstrated successful multiplexed detection of Escherichia coli and Bacillus subtilis.
Proved probe stability and selectivity during thermal cycling.
Validated the microchamber platform for integrated sample-to-answer pathogen identification.

Conclusions:

The single microchamber platform offers a cost-effective solution for on-site pathogen monitoring.
This integrated approach simplifies DNA analysis, paving the way for point-of-care diagnostics.
The technology enables rapid and selective detection of multiple bacterial pathogens.