Detection of PCR products using self-probing amplicons and fluorescence (original) (raw)
- Research Article
- Published: August 1999
Nature Biotechnology volume 17, pages 804–807 (1999)Cite this article
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Abstract
Molecular diagnostics is progressing from low-throughput, heterogeneous, mostly manual technologies to higher throughput, closed-tube, and automated methods. Fluorescence is the favored signaling technology for such assays, and a number of techniques rely on energy transfer between a fluorophore and a proximal quencher molecule. In these methods, dual-labeled probes hybridize to an amplicon and changes in the quenching of the fluorophore are detected. We describe a new technology that is simple to use, gives highly specific information, and avoids the major difficulties of the alternative methods. It uses a primer with an integral tail that is used to probe an extension product of the primer. The probing of a target sequence is thereby converted into a unimolecular event, which has substantial benefits in terms of kinetics, thermodynamics, assay design, and probe reliability.
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Acknowledgements
We thank Dr. Neil Gibson for helpful discussions, Kay Callaghan and Kemal Haque for sharing of unpublished K-ras data, and Dr. Julian Sorrell for information concerning IL-1A polymorphisms. The methods described in this paper form part of worldwide patent applications. ARMS is the subject of European patent number 0332435 (ZENECA Ltd.) and corresponding US patent #5595890. The use of nonamplifiable tails and blocking monomers are the subjects of European patent 0416817 (ZENECA Ltd.) and corresponding US patent #5525494.
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Authors and Affiliations
- AstraZeneca Diagnostics, Gadbrook Park , Rudheath, Northwich, CW9 7RA , Cheshire, UK
David Whitcombe, Jane Theaker, Simon P. Guy & Steve Little - Department of Chemistry, University of Southampton, Highfield, SO17 1BJ, Southampton, UK
Tom Brown
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Correspondence toDavid Whitcombe.
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Whitcombe, D., Theaker, J., Guy, S. et al. Detection of PCR products using self-probing amplicons and fluorescence .Nat Biotechnol 17, 804–807 (1999). https://doi.org/10.1038/11751
- Received: 18 January 1999
- Accepted: 21 May 1999
- Issue Date: August 1999
- DOI: https://doi.org/10.1038/11751