Increased sample capacity for genotyping and expression profiling by kinetic polymerase chain reaction

Area of Science:

• Molecular Biology
• Genomics
• Biotechnology

Background:

• High-throughput screening is crucial for genomics applications.
• Existing methods for genotyping and transcript quantification can be limited in throughput and accuracy.

Purpose of the Study:

• To develop and evaluate high-throughput kinetic thermal cyclers for kinetic polymerase chain reaction (kPCR) and kinetic reverse transcription (kRT)-PCR.
• To assess the system's capability for allele-specific genotyping and transcript profiling.

Main Methods:

• Fabrication and evaluation of 768-reaction capacity kinetic thermal cyclers.
• Utilized dye-based detection with ethidium bromide and a single DNA polymerase-based assay.
• Performed allele-specific detection of hemochromatosis mutant alleles (C282Y, H63D) and transcript profiling of yeast genes.

Main Results:

• Reliable allele-specific detection of hereditary hemochromatosis mutant alleles down to 10 genome equivalents per assay.
• Reproducible transcript profiling of 16 yeast transcripts across four orders of magnitude in abundance.
• Instrument-independent and transcript-specific standard deviations ranging from 0.11 to 0.97 PCR cycles.

Conclusions:

• The 768-reaction kinetic thermal cyclers are highly suitable for genomics applications requiring high sensitivity and accuracy.
• The system demonstrates robust performance for single nucleotide polymorphism/disease association studies and genomewide transcription profiling.
• The technology offers a powerful tool for large-scale genetic and gene expression analysis.