[Multiplex Assay to Evaluate the Genetic Risk of Developing Human Melanoma]

Area of Science:

• Genetics
• Molecular Biology
• Biotechnology

Background:

• Genetic polymorphisms influence various traits and disease susceptibilities.
• Accurate and efficient genotyping methods are crucial for genetic research and diagnostics.
• Existing methods may face limitations in throughput or sensitivity.

Purpose of the Study:

• To develop a streamlined genotyping procedure for multiple specific gene polymorphisms.
• To evaluate the performance of allele-specific hybridization on a hydrogel biochip.
• To optimize fluorescent labeling and detection for enhanced sensitivity.

Main Methods:

• Developed a single-step Polymerase Chain Reaction (PCR) combined with allele-specific hybridization on a hydrogel biochip.
• Analyzed polymorphisms in HERC2, OCA2, SLC24A4, SLC45A2, TYR, IRF4, MC1R, MITF, PIGU, MYH7B, NCOA6, and CDK10.
• Utilized fluorescently labeled PCR products and detected signals on biochip cells for duplex formation analysis.
• Synthesized cyanine dyes (Cy5, Cy7) as 5'-tags for universal primers.

Main Results:

• Successfully developed and validated a genotyping procedure using PCR and hydrogel biochip hybridization.
• Demonstrated the effectiveness of cyanine dyes, particularly a Cy7 analog, for fluorescent labeling.
• Observed increased sensitivity in hybridization analysis with the near-infrared Cy7 analog due to lower background signals.

Conclusions:

• The developed method offers an efficient approach for genotyping multiple genetic loci.
• The use of near-infrared fluorescent dyes significantly enhances the sensitivity of the assay.
• This technique holds promise for high-throughput genetic analysis and personalized medicine applications.