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Related Experiment Videos

Flow cytometric platform for high-throughput single nucleotide polymorphism analysis.

J D Taylor1, D Briley, Q Nguyen

  • 1Glaxo Wellcome Research and Development, Research Triangle Park, NC, USA. jdt6451@glaxowellcome.com

Biotechniques
|March 17, 2001
PubMed
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This study introduces a fast, affordable method for single nucleotide polymorphism (SNP) genotyping using flow cytometry. The new assay offers high accuracy and efficiency for analyzing genetic variations in large patient cohorts.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Single nucleotide polymorphisms (SNPs) are crucial genetic markers for various applications.
  • Accurate and high-throughput SNP genotyping methods are essential for genetic research and diagnostics.
  • Existing methods may lack efficiency or cost-effectiveness for large-scale studies.

Purpose of the Study:

  • To develop a rapid, cost-effective, and high-throughput method for SNP genotyping.
  • To validate novel assay formats for multiplex SNP analysis.
  • To improve signal detection and streamline SNP analysis protocols.

Main Methods:

  • Developed a flow cytometry-based assay utilizing Luminex 100 for SNP genotyping.
  • Employed single base chain extension (SBCE) and allele-specific primer extension (ASPE) reactions.

Related Experiment Videos

  • Used fluorescent microspheres with complementary ZipCode sequences (cZipCodes) for target capture and analysis.

    • Main Results:

    • Achieved 99.3% agreement between microsphere-based SBCE assay and gel-based oligonucleotide ligation assay (OLA) for genotype assignments.
    • Demonstrated multiplex SNP analysis for 20 SNPs in 633 patients and 15 SNPs in 96 patients.
    • Enhanced signal detection five- to tenfold by substituting fluorescent reporter molecules.

    Conclusions:

    • The developed flow cytometry-based SNP genotyping assay is robust, rapid, and cost-effective.
    • ASPE offers a streamlined protocol for multiplex SNP analysis with allelic variant mixtures.
    • This technology enables efficient high-throughput genetic variation analysis for large populations.