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Related Experiment Videos

SNP genotyping using single-tube fluorescent bidirectional PCR.

Christy M Waterfall1, Benjamin D Cobb

  • 1Molecular Sensing plc, Melksham, Wiltshire, UK. christy.waterfall@molecular-sensing.com

Biotechniques
|July 26, 2002
PubMed
Summary

This study introduces a rapid, cost-effective SNP genotyping assay using allele-specific amplification and SYBR Green. It accurately distinguishes sickle cell anemia genotypes in under 30 minutes without complex procedures.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • SNP genotyping assays aim for accuracy and speed but often require complex designs and optimization.
  • Existing methods can be costly and time-consuming, hindering widespread application.

Purpose of the Study:

  • To develop a novel, homogeneous single-nucleotide polymorphism (SNP) genotyping assay.
  • To integrate bidirectional allele-specific amplification, SYBR Green I, and rapid-cycle PCR for efficient SNP typing.
  • To demonstrate a rapid, cost-effective, and reliable method for genetic analysis.

Main Methods:

  • Integration of bidirectional allele-specific amplification with SYBR Green I and rapid-cycle PCR.
  • Utilizing melt curve profiling of PCR products for allelic discrimination.

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  • Conducting a blinded trial with clinical samples for sickle cell anemia, trait, and unaffected individuals.

    • Main Results:

    • Successful discrimination of wild-type, mutant, and heterozygous alleles in a single tube.
    • Assay completion in under 30 minutes.
    • High reliability demonstrated through blinded clinical sample testing.

    Conclusions:

    • The developed homogeneous SNP-typing assay is rapid, inexpensive, and requires no complex design or optimization.
    • Melt curve profiling of PCR products alone enables accurate allelic discrimination.
    • This method offers a practical solution for genetic analysis, exemplified by sickle cell disease screening.