RAPID, NONSEPARATION ELECTROCHEMILUMINESCENT DNA HYBRIDIZATION ASSAYS FOR PCR PRODUCTS, USING 3' LABELED OLIGONUCLEOTIDE PROBES

被引:39
作者
GUDIBANDE, SR
KENTEN, JH
LINK, J
FRIEDMAN, K
MASSEY, RJ
机构
[1] IGEN INC, DEPT MOLEC BIOL, 1530 E JEFFERSON ST, ROCKVILLE, MD 20852 USA
[2] UNIV N CAROLINA, CHAPEL HILL, NC 27514 USA
关键词
ELECTROCHEMILUMINESCENCE; TRIS-BIPYRIDINE RU(II) COMPLEX; HIV-1; DNA HYBRIDIZATION; PCR; CYSTIC FIBROSIS;
D O I
10.1016/0890-8508(92)90046-Z
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Described are rapid assays for the analysis of PCR products in a one step, non-separation assay based on the use of electrochemiluminescence generated from a tris-bipyridine ruthenium (II) label. The assay uses PCR incorporation of a biotinylated oligonucleotide as a primer, with the inclusion of a labelled oligonucleotide. Oligonucleotides were labelled with an N-hydroxy succinimide ester of tris-bipyridine ruthenium (II) dihexafluorophosphate (Origen ®-label) by modifying the 3′ and 3′ 5′ ends of the oligonucleotide probes. The assay makes use of the inherent thermal stability and absence of polymerase activity on such probes to allow the PCR and probe hybridization to be completed automatically on the thermocycler. The assay is concluded by the addition of PCR samples to streptavidin beads on an electrochemiluminescence analyser for binding and analysis. Target genes evaluated were the HIV-1 gag gene, and cystic fibrosis ΔF-508 deletion mutation. The results obtained from these assays demonstrated the detection of 10 copies of the HIV-1 gag gene, and cystic fibrosis ΔF-508 mutation in 1 ng of human DNA within 15 min. This assay format allows a rapid and simple determination of specific amplified DNA sequences, reducing the contamination risks due to washes and multiple pipetting. © 1992.
引用
收藏
页码:495 / 503
页数:9
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