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The Detection of in Vivo and in Vitro HIV Type 1 B/F Profiles in Brazil Using a Real-Time PCR Assay for Five HIV Type 1 Genomic Regions

TEIXEIRA, Daniela ; MUNERATO, Patricia ; VASCONCELOS KOMNINAKIS, Shirley Cavalcante ; FUSUMA, Erika Etsuko ; JANINI, Luiz Mario ; ARARIPE SUCUPIRA, Maria Cecilia ; SOBHIE DIAZ, Ricardo

AIDS research and human retroviruses, 2010-09, Vol.26 (9), p.981-990 [Periódico revisado por pares]

New Rochelle, NY: Liebert

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Título:
The Detection of in Vivo and in Vitro HIV Type 1 B/F Profiles in Brazil Using a Real-Time PCR Assay for Five HIV Type 1 Genomic Regions
Autor: TEIXEIRA, Daniela ; MUNERATO, Patricia ; VASCONCELOS KOMNINAKIS, Shirley Cavalcante ; FUSUMA, Erika Etsuko ; JANINI, Luiz Mario ; ARARIPE SUCUPIRA, Maria Cecilia ; SOBHIE DIAZ, Ricardo
Assuntos: AIDS/HIV ; Biological and medical sciences ; Brazil - epidemiology ; Cell Line ; Diagnosis ; Fundamental and applied biological sciences. Psychology ; Genome, Viral ; HIV infection ; HIV Infections - epidemiology ; HIV-1 - genetics ; Human immunodeficiency virus 1 ; Human viral diseases ; Humans ; Infectious diseases ; Medical sciences ; Microbiology ; Miscellaneous ; Phylogeny ; Polymerase Chain Reaction ; Retrovirus ; RNA, Viral - genetics ; Sensitivity and Specificity ; Sequence Analysis, RNA ; Viral diseases ; Virology
É parte de: AIDS research and human retroviruses, 2010-09, Vol.26 (9), p.981-990
Notas: ObjectType-Article-1
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Descrição: We sought to determine the frequency and profile of HIV-1 BF recombinants in vitro and in vivo. Laboratory HIV-1 strains from subtypes B and F were cocultured and evaluated. Clinical samples from the city of Santos, Brazil, where the first HIV-1 B/F circulating recombinant forms (CRF) were described, were also assessed. Five real-time PCR assays were developed to equally amplify subtypes B and F, and subtype-specific probes were developed and optimized. To validate the PCR systems, clinical samples from Santos were sequenced and phylogenetically analyzed. The real-time PCR assays were performed on these samples and on the supernatant of an in vitro competition assay to assess emergent recombinant strains. Out of 157 clinical samples, 62.1% were defined as subtype B, 3.0% were subtype F, 16.7% presented the CRF28_BF profile, and 13.6% of the samples presented the CRF29_BF profile. The specificity and sensitivity in the discrimination assay for this sample panel were 93% and 92%, respectively. The HIV that emerged from the coinfected cell culture closely resembled the CRF28_BF profile. The first-described CRFs are still fixed in this geographic region of Brazil, and the in vitro emerging strains detected by real-time PCR suggest that in addition to the shaping of recombinant strains by immune selection, viral structures may also play an important role in emerging CRFs.
Editor: New Rochelle, NY: Liebert
Idioma: Inglês

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The Detection of in Vivo and in Vitro HIV Type 1 B/F Profiles in Brazil Using a Real-Time PCR Assay for Five HIV Type 1 Genomic Regions

TEIXEIRA, Daniela ; MUNERATO, Patricia ; VASCONCELOS KOMNINAKIS, Shirley Cavalcante ; FUSUMA, Erika Etsuko ; JANINI, Luiz Mario ; ARARIPE SUCUPIRA, Maria Cecilia ; SOBHIE DIAZ, Ricardo

New Rochelle, NY: Liebert

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