Nucleic Acid Detection with Ion Concentration Polarization Microfluidic Chip for Reduced Cycle Numbers of Polymerase...

Area of Science:

• Biotechnology
• Analytical Chemistry
• Microfluidics

Background:

• Nucleic acid detection is crucial for disease diagnosis, food safety, and environmental monitoring.
• Developing rapid and sensitive detection methods is essential for practical applications.
• Existing methods may require longer analysis times or more complex procedures.

Purpose of the Study:

• To develop a rapid nucleic acid detection method.
• To integrate polymerase chain reaction (PCR) with electrokinetic preconcentration (ICP) using a microfluidic chip.
• To demonstrate the method's efficacy in detecting animal-derived components in meat products.

Main Methods:

• Utilized a microfluidic chip with a Nafion film for ion concentration polarization (ICP).
• Employed PCR for nucleic acid amplification.
• Integrated ICP-based electrokinetic preconcentration to enrich nucleic acid molecules during PCR thermal cycling.
• Applied the method to detect animal-derived components for meat product identification.

Main Results:

• Achieved nucleic acid detection with a reduced cycle number of 24 cycles.
• Completed the entire detection process in approximately 35 minutes.
• Demonstrated the capability of the microfluidic device and hybrid method for rapid analysis.
• Successfully identified animal-derived components in meat products.

Conclusions:

• The developed method offers a straightforward approach for rapid nucleic acid detection.
• The integration of PCR and ICP preconcentration on a microfluidic chip significantly reduces detection time.
• This technology holds potential for various applications requiring fast and sensitive nucleic acid analysis.