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Parallel protein analysis by proximity ligation with DNA microarray read-out
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Genetics and Pathology.
Manuscript (Other academic)
URN: urn:nbn:se:uu:diva-96778OAI: oai:DiVA.org:uu-96778DiVA: diva2:171464
Available from: 2008-02-28 Created: 2008-02-28 Last updated: 2010-01-13Bibliographically approved
In thesis
1. Biomolecular Analysis by Dual-Tag Microarrays and Single Molecule Amplification
Open this publication in new window or tab >>Biomolecular Analysis by Dual-Tag Microarrays and Single Molecule Amplification
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Padlock probes and proximity ligation are two powerful molecular tools for detection of nucleic acids and proteins, respectively. Both methods result in the formation of DNA reporter molecules upon recognition of specific target molecules. These reporter molecules can be designed to include tag sequences that can be analyzed by techniques for nucleic acid analysis. Herein, I present a dual-tag microarray (DTM) platform that is suitable for high-performance analyses of DNA reporter molecule libraries, generated by padlock and proximity probing reactions. The DTM platform was applied for analysis of mRNA transcripts using padlock probes, and of cytokines using proximity ligation. The platform drastically improved specificity of detection, and it allowed precise measurements of proteins and nucleic acids over wide dynamic ranges.

The thesis also presents two techniques for multi-probe analyses of biomolecules: the triple-specific proximity ligation assay (3PLA) for protein analyses, and the spliceotyping assay for mRNA analyses. 3PLA allows highly specific measurements of as little as hundreds of target protein molecules by interrogating three target epitopes simultaneously. In spliceotyping the exon composition of individual transcripts are represented as a series of tag sequences in DNA reporter molecules, via a series of target-dependent ligation reactions. Next, the splicing patterns along individual transcripts can be revealed by amplified single molecule detection and step-wise decoding.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2008. 58 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 315
Molecular medicine, Microarray, proximity ligation, Padlock probe, Rolling circle amplification, Splicing, single molecule, Molekylärmedicin
urn:nbn:se:uu:diva-8475 (URN)978-91-554-7101-9 (ISBN)
Public defence
2008-03-20, Rudbeckssalen, Rudbeckslaboratoriet, Daghammarsköldsväg 20, Uppsala, 09:15
Available from: 2008-02-28 Created: 2008-02-28Bibliographically approved

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