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High-Throughput SNP Detection Based on PCR Amplification on Magnetic Nanoparticles Using Dual-Color Hybridization

互联网

361
A microarray-based method for detecting single nucleotide polymorphisms (SNPs) using solid-phase polymerase chain reaction (PCR) on magnetic nanoparticles (MNPs) was developed. In this method one primer with a biotin label is captured by streptavidin-coated MNPs (SA-MNPs), and the PCR products are directly amplified on the surface of SA-MNPs in a 96-well plate. The samples are further probed by hybridization with a pair of dual-color probes to determine SNP. The genotype of each sample can be simultaneously identified by scanning the microarray printed with the denatured fluorescent probes. All the reactions can be performed in the same reaction volume without the necessity of purification of intermediates. This approach represents a novel, simple, and labor-saving method for SNP genotyping and can be applied in automation system(s) to achieve high-throughput SNP detection.
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