A valveless rotary microfluidic device for multiplex point mutation identification based on ligation-rolling circle...

Area of Science:

• Biomedical Engineering
• Molecular Diagnostics
• Genetics

Background:

• Genetic variations like single nucleotide polymorphisms (SNPs) are crucial biomarkers for disease prognosis and diagnosis.
• Accurate and efficient SNP typing is essential for personalized medicine and early disease detection.

Purpose of the Study:

• To develop a novel rotary microfluidic device for multiplex SNP typing.
• To simplify the process of genetic analysis for disease-related gene mutations.

Main Methods:

• Fabrication of a three-layer glass microdevice with a rotary plate containing twelve reaction chambers.
• Integration of sample injection, ligation-rolling circle amplification (L-RCA), and fluorescence detection.
• Utilized a rotary plate to control microfluidic flow, eliminating the need for microvalves and micropumps.

Main Results:

• Successfully performed multiplex SNP typing on TP53 gene mutation sites.
• Identified five critical mutation points associated with cancer prognosis.
• Demonstrated a simplified chip design and operation for multiplex SNP detection.

Conclusions:

• The developed rotary microfluidic device offers a multiplex, simple, and portable platform for advanced genetic analysis.
• This technology has significant potential for biomedical diagnostics and disease monitoring.
• The device simplifies complex genetic analyses, making them more accessible for clinical applications.