Medium-throughput SNP genotyping using mass spectrometry: multiplex SNP genotyping using the iPLEX® Gold assay

Area of Science:

• Genetics
• Molecular Biology
• Biotechnology

Background:

• Single-nucleotide polymorphism (SNP) genotyping experiments vary in throughput, cost, and efficiency.
• Medium-throughput genotyping is suitable for assaying multiple markers in numerous individuals, often for fine-mapping genetic regions.
• Multiplexing enhances medium-throughput genotyping efficiency, speed, and cost-effectiveness.

Purpose of the Study:

• To describe a specific medium-throughput SNP genotyping protocol.
• To detail the application of the iPLEX® Gold assay for multiplex SNP analysis.

Main Methods:

• Utilizes the iPLEX® Gold assay for multiplex SNP genotyping.
• Involves locus-specific PCR amplification, shrimp alkaline phosphatase treatment, and single-base primer extension.
• Employs matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) for allele detection.

Main Results:

• The described protocol enables medium-throughput multiplex SNP genotyping.
• The iPLEX® Gold assay facilitates efficient and economic SNP analysis.
• MALDI-TOF MS provides allele-specific detection for genetic studies.

Conclusions:

• The iPLEX® Gold assay is an effective platform for medium-throughput multiplex SNP genotyping.
• This method offers an efficient and rapid approach for genetic fine-mapping and analysis.
• The protocol leverages proprietary reagents and technology for robust SNP detection.