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Nucleic Acids Research, 2002, Vol. 30, No. 22 e125
© 2002 Oxford University Press

SNP genotyping on a genome-wide amplified DOP-PCR template

Struan F. A. Grant, Simone Steinlicht, Ulrike Nentwich, Rainer Kern, Barbara Burwinkel and Ralf Tolle*

LION bioscience AG, Im Neuenheimer Feld 515–517, 69120 Heidelberg, Germany

*To whom correspondence should be addressed. Tel: +49 6221 4038 0; Fax: +49 6221 4038 301; Email: ralf.tolle{at}lionbioscience.com
Present address:
Struan F. A. Grant, deCODE Genetics, Sturlugata 8, 101 Reykjavik, Iceland

With the increasing demand for higher throughput single nucleotide polymorphism (SNP) genotyping, the quantity of genomic DNA often falls short of the number of assays required. We investigated the use of degenerate oligonucleotide primed polymerase chain reaction (DOP-PCR) to generate a template for our SNP genotyping methodology of fluorescence polarization template-directed dye-terminator incorporation detection. DOP-PCR employs a degenerate primer (5'-CCGACTCGAGNNNNNNATGTGG-3') to produce non-specific uniform amplification of DNA. This approach has been successfully applied to microsatellite genotyping. We compared genotyping of DOP-PCR-amplified genomic DNA to genomic DNA as a template. Results were analyzed with respect to feasibility, allele loss of alleles, genotyping accuracy and storage conditions in a high-throughput genotyping environment. DOP-PCR yielded overall satisfactory results, with a certain loss in accuracy and quality of the genotype assignments. Accuracy and quality of genotypes generated from the DOP-PCR template also depended on storage conditions. Adding carrier DNA to a final concentration of 10 ng/µl improved results. In conclusion, we have successfully used DOP-PCR to amplify our genomic DNA collection for subsequent SNP genotyping as a standard process.


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