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      Applications of Luminex® xMAP™ technology for rapid, high-throughput multiplexed nucleic acid detection

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          As we enter the post-genome sequencing era and begin to sift through the enormous amount of genetic information now available, the need for technologies that allow rapid, cost-effective, high-throughput detection of specific nucleic acid sequences becomes apparent. Multiplexing technologies, which allow for simultaneous detection of multiple nucleic acid sequences in a single reaction, can greatly reduce the time, cost and labor associated with single reaction detection technologies.


          The Luminex® xMAP™ system is a multiplexed microsphere-based suspension array platform capable of analyzing and reporting up to 100 different reactions in a single reaction vessel. This technology provides a new platform for high-throughput nucleic acid detection and is being utilized with increasing frequency. Here we review specific applications of xMAP technology for nucleic acid detection in the areas of single nucleotide polymorphism (SNP) genotyping, genetic disease screening, gene expression profiling, HLA DNA typing and microbial detection.


          These studies demonstrate the speed, efficiency and utility of xMAP technology for simultaneous, rapid, sensitive and specific nucleic acid detection, and its capability to meet the current and future requirements of the molecular laboratory for high-throughput nucleic acid detection.

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          Most cited references 44

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          The year 2000 marked both the start of the new millennium and the announcement that the vast majority of the human genome had been sequenced. Much work remains to understand how this "instruction book for human biology" carries out its multitudes of functions. But the consequences for the practice of medicine are likely to be profound. Genetic prediction of individual risks of disease and responsiveness to drugs will reach the medical mainstream in the next decade or so. The development of designer drugs, based on a genomic approach to targeting molecular pathways that are disrupted in disease, will follow soon after. Potential misuses of genetic information, such as discrimination in obtaining health insurance and in the workplace, will need to be dealt with swiftly and effectively. Genomic medicine holds the ultimate promise of revolutionizing the diagnosis and treatment of many illnesses.
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            An assay for the presence of given DNA sequences has been developed, based on the ability of two oligonucleotides to anneal immediately adjacent to each other on a complementary target DNA molecule. The two oligonucleotides are then joined covalently by the action of a DNA ligase, provided that the nucleotides at the junction are correctly base-paired. Thus single nucleotide substitutions can be distinguished. This strategy permits the rapid and standardized identification of single-copy gene sequences in genomic DNA.
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                Author and article information

                Clin Chim Acta
                Clin. Chim. Acta
                Clinica Chimica Acta; International Journal of Clinical Chemistry
                Elsevier B.V.
                15 August 2005
                January 2006
                15 August 2005
                : 363
                : 1
                : 71-82
                Luminex Corporation, 12212 Technology Blvd., Austin, TX 78727, United States
                Author notes
                [* ]Tel.: +1 512 219-8020x290; fax: +1 512 258 4173. sdunbar@
                Copyright © 2005 Elsevier B.V. All rights reserved.

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