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Published on: February 23, 2020
A magnet-actuated microfluidic array chip for high-throughput pretreatment and amplification and detection of
Mengfan Zhou1, Huiying Su2,1, Bangfeng Wang1
1The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China. xfeng@mail.hust.edu.cn.
This study introduces a novel magnet-actuated microfluidic array chip for rapid, simultaneous detection of multiple pathogens using loop-mediated isothermal amplification. The device offers enhanced control and repeatability for timely infectious disease diagnosis.
Area of Science:
- Biotechnology
- Microfluidics
- Molecular Diagnostics
Background:
- Global infectious disease outbreaks necessitate rapid pathogen identification for effective pandemic control.
- Current diagnostic methods often lack speed, high-throughput capability, or ease of use.
Purpose of the Study:
- To develop a magnet-actuated microfluidic array chip (MMAC) for integrated sample processing and nucleic acid amplification.
- To enable rapid, high-throughput, and repeatable detection of multiple pathogens.
Main Methods:
- Development of an MMAC utilizing magnetically actuated ferric oxide-doped polydimethylsiloxane for fluid control.
- Integration of sample processing and loop-mediated isothermal amplification (LAMP).
- Testing with Salmonella typhimurium and Escherichia coli for specificity and sensitivity.
Main Results:
- The MMAC demonstrated high specificity, detecting pathogens without cross-contamination.
- Achieved a lowest detection concentration of 5.2 copies/μL for Salmonella typhimurium within 60 minutes.
- Successfully enabled simultaneous detection of multiple pathogens.
Conclusions:
- The MMAC offers a simplified, repeatable, and high-throughput solution for pathogen detection.
- This technology has potential for immediate and simultaneous diagnosis of infectious diseases.
- The magnetic actuation system overcomes limitations of external equipment or manual operation in microfluidic devices.
