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Author Spotlight: Advancing Rapid Detection of Respiratory Pathogens Using Microfluidic Chip
Published on: March 29, 2024
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Quantitative analysis of respiratory viruses based on lab-on-a-chip platform
Ning Zhang1, Chao Yue1, Xiaobo Zhan1
1Systems Engineering Institute, Academy of Military Sciences, People's Liberation Army, Beijing, 100166, China.
Analytical and Bioanalytical Chemistry
|September 8, 2023
Summary
A new lab-on-a-chip platform automates respiratory virus quantification from nasal swabs. This method simplifies complex processes, making rapid diagnosis of diseases like COVID-19 more accessible, especially in resource-limited settings.
Area of Science:
- Biotechnology
- Medical Diagnostics
- Microfluidics
Background:
- Quantitative analysis of respiratory viruses is crucial for diagnosis, precision medicine, and prognosis.
- Current methods for viral quantification are often complex, time-consuming, and expensive, limiting their use with real samples.
- There is a need for accessible and efficient platforms for direct sample-to-result quantification.
Purpose of the Study:
- To develop an automated lab-on-a-chip platform for rapid, quantitative analysis of respiratory viruses from sample to result.
- To create an integrated chip for efficient RNA extraction and quantification of coronavirus disease 2019 (COVID-19) pseudovirus from large-volume nasal swabs.
- To optimize nucleic acid recovery and demonstrate the platform's utility in resource-limited settings.
Main Methods:
- Development of a multilayer integrated chip with a pneumatic valve for automated liquid channel control.
- Optimization of the immiscible filtration assisted by surface tension (IFAST) method for nucleic acid extraction, studying magnetic bead size and interfacial effects.
- Integration of the chip with an automated control system for sample processing and quantification.
Main Results:
- Achieved an 85% nucleic acid recovery rate through optimized IFAST conditions.
- Demonstrated a lab-on-a-chip platform capable of quantitative analysis from sample to result.
- The developed pneumatic valve enabled automatic control of liquid channels within the chip.
- The platform is suitable for large-volume nasal swab samples and adaptable for other respiratory viruses and sample types.
Conclusions:
- The integrated lab-on-a-chip platform with an automated control system offers a simplified, efficient solution for respiratory virus quantification.
- This technology is particularly beneficial for resource-limited settings, improving accessibility to rapid diagnostics.
- The method's adaptability suggests broad applicability for various viral targets and sample matrices.
