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M9480838.TXT
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1994-09-05
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Document 0838
DOCN M9480838
TI Detection of HIV-1 proviral DNA by polymerase chain reaction using an
electrochemiluminescent-tagged probe.
DT 9410
AU Schutzbank TE; Smith J; Greeley C; Children's Hospital National Medical
Center, Washington, D.C.
SO Abstr Gen Meet Am Soc Microbiol. 1994;94:555 (abstract no. C-367).
Unique Identifier : AIDSLINE ASM94/94313107
AB We have developed a rapid, pseudo-homogeneous assay for the detection of
PCR amplicons, based on the use of electroluminescence generated from a
Tris-bipyridine ruthinium (II) (Ru(bpy)3(3+)) label. PCR amplification
of highly conserved HIV-1 gag gene sequences were performed using
SK38/SK39 primers, where the latter was 5'-biotinylated. Post-PCR
reactions were mixed with 10(12) copies of the SK19 probe-Ru(bpy)2(3+)
NHS ester conjugate, denatured by heating at 100 degrees C for 5
minutes, and hybridized at 55 degrees C for an additional 15 minutes.
Hybridization to the biotinylated strand of the amplified DNA was
determined by the addition of streptavidin-conjugated magnetic
particles, and analysis on an Origen-1 electroluminescence analyzer. Our
results demonstrated a sensitivity of less than 5 copies of HIV-1
(pre-PCR), using either purified plasmid DNA containing one complete
copy of the HIV-1 cDNA genome, or lysed, proteinase K treated 8E5 cells
as the starting material. In an evaluation with actual clinical
specimens, (peripheral blood monocytes from both normal and
HIV-1-infected children), the electroluminescent detection assay
correlated 100% with our standard method (solution hybridization with a
radiolabeled probe followed by polyacrylamide gel electrophoresis [PAGE]
and autoradiography). The electroluminescent method was substantially
easier to perform than either PAGE or microtiter plate assays, and was
considerable faster than either of these alternative formats.
DE Acquired Immunodeficiency Syndrome/BLOOD/*DIAGNOSIS/IMMUNOLOGY Base
Sequence Chemiluminescence Child Conserved Sequence DNA Primers
DNA, Viral/*BLOOD Electrochemistry/*METHODS Electrophoresis,
Polyacrylamide Gel *Genes, gag Human HIV-1/GENETICS/*ISOLATION &
PURIF Monocytes/MICROBIOLOGY Oligonucleotide Probes Polymerase Chain
Reaction/*METHODS Proviruses/GENETICS/*ISOLATION & PURIF Reference
Values MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).