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Journal of Clinical Microbiology, March 2000, p. 1066-1071, Vol. 38, No. 3
Immunoanalysis Department, Immunotech, a
Beckman-Coulter Company, 13276 Marseille Cedex 9, France
Received 13 May 1999/Returned for modification 26 August
1999/Accepted 26 November 1999
The feasibility of performing a multiplex assay for the detection
of human immunodeficiency virus type 1 (HIV-1) and hepatitis C virus
(HCV) RNAs and hepatitis B virus (HBV) DNA is demonstrated. This assay
is based (i) on the coamplification of a 142-bp fragment from the
gag region of the HIV-1 genome and a 142-bp HIV-1
quantitation standard fragment, a 244-bp fragment from the 5' noncoding
region of the HCV genome, and a 104-bp fragment from the pre-C and C gene regions of the HBV genome, using three sets of specific primers; (ii) on the capacity of these four biotinylated PCR products to hybridize to their specific oligonucleotide probe-coated microspheres; and (iii) on the ability of the flow cytometer to discriminate between
distinct fluorescent-microsphere categories. Absence of cross-hybridization between the unrelated oligonucleotide probes and
PCR products generated by the multiplex reverse transcription-PCR (RT-PCR) and the highly sensitive detection method allowed us to assess
unambiguously the HIV-1 viral load and the infectious status of 35 serologically well-established clinical samples and 20 seronegative
blood donor plasma samples tested. The results indicate that multiplex
RT-PCR and flow cytometer microsphere-based hybridization assays, when
combined, provide a rapid, sensitive, and specific method for the
quantitation and detection of the major viral agents of infectious
diseases in a single plasma sample.
0095-1137/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Simultaneous Detection of Multiplex-Amplified Human
Immunodeficiency Virus Type 1 RNA, Hepatitis C Virus RNA, and Hepatitis
B Virus DNA Using a Flow Cytometer Microsphere-Based
Hybridization Assay
*
Corresponding author. Mailing address: Immunoanalysis
Department, Immunotech, a Beckman-Coulter Company, 130 Avenue de Lattre de Tassigny, B.P. 177, 13276 Marseille Cedex 9, France. Phone: 33 4 91 17 27 00. Fax: 33 4 91 17 27 40. E-mail:
defoort{at}immunotech.fr.
Present address: Ipsogen, Parc Scientifique de Luminy, Case 915, 13288 Marseille Cedex 9, France.
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