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Multiplexed SNP genotyping using nanobarcode particle technology.

Michael Y Sha1, Ian D Walton, Scott M Norton

  • 1Nanoplex Technologies Inc, 665 Clyde Avenue, Mountain View, CA 94043, USA.

Analytical and Bioanalytical Chemistry
|January 20, 2006
PubMed
Summary
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Encoded nanowires offer a novel particle-based universal array for high-throughput single-nucleotide polymorphism (SNP) genotyping. This technology enables simultaneous analysis of multiple SNPs from genomic DNA samples.

Area of Science:

  • Genomics
  • Nanotechnology
  • Molecular Biology

Background:

  • Single-nucleotide polymorphisms (SNPs) are common genetic variations crucial for large-scale genomic studies.
  • High-throughput SNP genotyping platforms are essential for analyzing these variations efficiently.

Purpose of the Study:

  • To demonstrate the potential of encoded nanowires for a universal array system for high-throughput SNP genotyping.
  • To develop a novel particle-based platform for simultaneous analysis of multiple SNPs.

Main Methods:

  • Fabrication of encoded sub-micron metallic nanorods (nanowires) with unique optical reflectivity patterns.
  • Development of a universal short oligonucleotide ligation strategy for SNP detection.
  • Simultaneous genotyping of 15 SNPs within the cytochrome P450 gene family using the nanowire array.

Related Experiment Videos

  • Analysis of 160 genotypes from 20 genomic DNA samples using multiplex PCR products.

    • Main Results:

    • Demonstrated the capability of encoded nanowires to generate thousands of unique encoded substrates.
    • Successfully achieved simultaneous genotyping of 15 SNPs, requiring discrimination of 30 encoded nanowires.
    • Validated the platform's applicability to real-world samples by determining 160 genotypes from 20 individuals.

    Conclusions:

    • Encoded nanowires provide a powerful and versatile platform for high-throughput SNP genotyping.
    • This particle-based universal array technology has significant potential for large-scale genomic studies and personalized medicine.