Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/23084
Title: Characterization of HIV-1 CRF90_BF1 and putative novel CRFs_BF1 in Central West, North and Northeast Brazilian regions
Authors: Reis, Mônica Nogueira da Guarda
Bello, Gonzalo
Guimarães, Monick Lindenmeyer
Stefani, Mariane Martins Araújo
Affilliation: Universidade Federal de Goiás. Instituto de Patologia Tropical e Saúde Pública. Laboratório de Imunologia da AIDS e da Hanseníase. Goiânia, GO, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de AIDS e Imunologia Molecular. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de AIDS e Imunologia Molecular. Rio de Janeiro, RJ. Brasil.
Universidade Federal de Goiás. Instituto de Patologia Tropical e Saúde Pública. Laboratório de Imunologia da AIDS e da Hanseníase. Goiânia, GO, Brasil.
Abstract: The Brazilian AIDS epidemic has been characterized by an increasing rate of BF1 recombinants and so far eight circulating recombinant forms/CRFs_BF1 have been described countrywide. In this study, pol sequences (protease/PR, reverse transcriptase/RT) of 87 BF1 mosaic isolates identified among 828 patients living in six Brazilian States from three geographic regions (Central West, North, Northeast) were analyzed. Phylogenetic and bootscan analyses were performed to investigate the evolutionary relationship and mosaic structure of BF1 isolates. Those analyses showed that 20.7% of mosaics (18 out of 87) were CRFs-like isolates, mostly represented by CRF28/CRF29_BF-like viruses (14 out of 18). We also identified five highly supported clusters that together comprise 42 out of 87 (48.3%) BF1 sequences, each cluster containing at least five sequences sharing a similar mosaic structure, suggesting possible new unidentified CRFs_BF1. The divergence time of these five potential new CRFs_BF1 clusters was estimated using a Bayesian approach and indicate that they probably originated between the middle 1980s and the middle 1990s. DNA was extracted from whole blood and four overlapping fragments were amplified by PCR providing full/near full length genomes (FLG/NFLG) and partial genomes. Eleven HIV-1 isolates from Cluster # 5 identified in epidemiologically unlinked individuals living in Central West and North regions provided FLG/NFLG/partial genome sequences with identical mosaic structure. These viruses differ from any known CRF_BF1 reported to date and were named CRF90_BF1 by the Los Alamos National Laboratory. This is the 9th CRF_BF1 described in Brazil and the first one identified in Central West and North regions. Our results highlight the importance of continued molecular screening and surveillance studies, especially of full genome sequences to understand the evolutionary dynamics of the HIV-1 epidemic in a country of continental dimensions as Brazil.
Keywords: AIDS
Brazil
CRFs_BF1
genome sequences
keywords: AIDS
Brasil
sequências do genoma
CRFs_BF1
Issue Date: 2017
Publisher: Public Library of Science
Citation: REIS, Mônica Nogueira da Guarda; et al. Characterization of HIV-1 CRF90_BF1 and putative novel CRFs_BF1 in Central West, North and Northeast Brazilian regions. Plos One, v.12, n.6, e0178578, June 2017.
DOI: 10.1371/journal.pone.0178578
ISSN: 1932-6203
Copyright: open access
Appears in Collections:IOC - Artigos de Periódicos

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