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  • Title: Multiplex single nucleotide polymorphisms genotyping using solid-phase single base extension on magnetic nanoparticles.
    Author: Liu H, Li S, Liu L, Tian L, He N.
    Journal: Anal Biochem; 2009 Mar 01; 386(1):126-8. PubMed ID: 19100705.
    Abstract:
    To fulfill the increasing need for large-scale genetic research, we have developed a new solid-phase single base extension (SBE) protocol on magnetic nanoparticles (MNPs) for multiplex SNP detection using adapter polymerase chain reaction (PCR) products as templates. Extension primers were covalently immobilized on the MNPs, and allele-specific extension took place along the stretch of target DNA for one-color ddNTP incorporation. The MNPs with fluorophores were spotted on a glass slide to fabricate a "bead array" to discriminate their genotypes. Eight SNP loci of three DNA samples were interrogated, and the experiment demonstrated that it is an efficient method for large-scale SNP genotyping.
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