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Bacterial Detection & Identification Using Electrochemical Sensors
Published on: April 23, 2013
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Ultrasensitive pathogen detection with a rolling circle amplification-empowered multiplex electrochemical DNA sensor.
Cheryl S Y Yeap1,2,3, Thanyarat Chaibun1,3, Su Yin Lee4
1Biosensors Laboratory, Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom, Thailand. benchaporn.ler@mahidol.ac.th.
Chemical Communications (Cambridge, England)
|November 2, 2021
Summary
We developed a sensitive multiplex assay using electrochemical DNA sensors and rolling circle amplification. This method detects three common entero-pathogens simultaneously with femtomolar sensitivity, ideal for resource-limited settings.
Area of Science:
- Biomedical Engineering
- Molecular Diagnostics
- Biosensor Technology
Background:
- Accurate detection of entero-pathogens is crucial for public health.
- Existing diagnostic methods can be time-consuming and require specialized equipment.
- Multiplex detection offers efficiency by analyzing multiple targets simultaneously.
Purpose of the Study:
- To develop a highly sensitive and selective multiplex assay for entero-pathogen detection.
- To integrate electrochemical DNA sensors with isothermal rolling circle amplification (RCA).
- To enable simultaneous detection of multiple pathogens in a single reaction.
Main Methods:
- Utilized an electrochemical DNA sensor platform.
- Employed isothermal rolling circle amplification (RCA) for signal amplification.
- Designed the assay for simultaneous detection of three common entero-pathogens.
Main Results:
- Achieved femtomolar sensitivity for pathogen detection.
- Demonstrated high selectivity in simultaneously detecting and discriminating three different entero-pathogens.
- Validated the assay's performance in a multiplex format within a single reaction.
Conclusions:
- The developed multiplex assay offers a sensitive and selective method for entero-pathogen detection.
- The integration of electrochemical sensors and RCA is effective for multiplex pathogen analysis.
- The assay is suitable for field-based or resource-limited diagnostic applications.
