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Multiplex amplification enabled by selective circularization of large sets of genomic DNA fragments
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
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2005 In: Nucleic Acids Research, ISSN 1362-4962, Vol. 33, no 8, e71- p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2005. Vol. 33, no 8, e71- p.
URN: urn:nbn:se:uu:diva-93440OAI: oai:DiVA.org:uu-93440DiVA: diva2:166914
Available from: 2005-09-14 Created: 2005-09-14Bibliographically approved
In thesis
1. Selector Technology: For Multiplex DNA Analysis
Open this publication in new window or tab >>Selector Technology: For Multiplex DNA Analysis
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A majority of methods for identifying sequences in the human genome involve target sequence amplification through PCR. This work presents novel methods for amplifying circularized DNA and presents solutions for some major limitations of PCR.

We have developed a novel method to amplify circularized DNA molecules based on a serial rolling-circle replication reaction, called circle to circle amplification (C2CA). Amplified DNA circles can be detected in array-based analyses or in real-time using molecular beacons. The amplification mechanism allows higher precision in quantification than in exponential amplification methods like PCR, and more products can be generated than in PCR.

A major limitation of PCR is that amplification artifacts arise when large numbers of specific primer pairs are simultaneously added to a reaction. We have developed a solution to this problem that enables multiplex PCR amplification of specific target sequences without producing amplification artifacts. The procedure is based on oligonucleotide constructs, called selectors. The selectors identify defined target nucleic acid sequences, and they act as ligation templates to direct circularization of these targets. The selectors contain a general primer-pair motif that allows the circularized targets to be amplified in multiplex using a universal PCR primer pair. We also developed a computer program, PieceMaker, that finds an optimal design of selector probes for a given selector application. We demonstrate the method by performing a 96-plex PCR of specific DNA sequences with high success-rate and reproducibility.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2005. 44 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 65
Genetic engineering, DNA technology, Genteknik
National Category
Other Industrial Biotechnology
urn:nbn:se:uu:diva-5921 (URN)91-554-6330-4 (ISBN)
Public defence
2005-10-07, Rudbecksalen, Rudbecklaboratoriet, Dag Hammarskjölds väg 20, Uppsala, 09:15 (English)
Available from: 2005-09-14 Created: 2005-09-14 Last updated: 2009-10-14Bibliographically approved

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