Re-mapping the molecular features of the human immunodeficiency virus type 1 and human T-cell lymphotropic virus type 1 Brazilian sequences using a bioinformatics unit established in Salvador, Bahia, Brazil, to give support to the viral epidemiology studies

Memórias do Instituto Oswaldo Cruz

Artur Trancoso Lopo De Queiroz¹  Aline Cristina Andrade Mota-miranda¹  Tulio De Oliveira¹  Domingos Ramon Moreau²  Caroline De Carvalho Urpia²  Chandra Mara Carvalho²  Bernardo Galvão-castro¹  Luiz Carlos Junior Alcantara¹ 

[1] ,Centro de Pesquisa Gonçalo Moniz-Fiocruz Laboratório Avançado de Saúde Pública Salvador BA ,Brasil

关键词: human immunodeficiency virus type 1;    human T-cell lymphotropic virus type 1;    bioinformatics;    molecular epidemiology;   

DOI  :  10.1590/S0074-02762007005000005

来源: SciELO

【 摘 要 】

The analysis of genetic data for human immunodeficiency virus type 1 (HIV-1) and human T-cell lymphotropic virus type 1 (HTLV-1) is essential to improve treatment and public health strategies as well as to select strains for vaccine programs. However, the analysis of large quantities of genetic data requires collaborative efforts in bioinformatics, computer biology, molecular biology, evolution, and medical science. The objective of this study was to review and improve the molecular epidemiology of HIV-1 and HTLV-1 viruses isolated in Brazil using bioinformatic tools available in the Laboratório Avançado de Sáude Pública (Lasp) bioinformatics unit. The analysis of HIV-1 isolates confirmed a heterogeneous distribution of the viral genotypes circulating in the country. The Brazilian HIV-1 epidemic is characterized by the presence of multiple subtypes (B, F1, C) and B/F1 recombinant virus while, on the other hand, most of the HTLV-1 sequences were classified as Transcontinental subgroup of the Cosmopolitan subtype. Despite the high variation among HIV-1 subtypes, protein glycosylation and phosphorylation domains were conserved in the pol, gag, and env genes of the Brazilian HIV-1 strains suggesting constraints in the HIV-1 evolution process. As expected, the functional protein sites were highly conservative in the HTLV-1 env gene sequences. Furthermore, the presence of these functional sites in HIV-1 and HTLV-1 strains could help in the development of vaccines that pre-empt the viral escape process.

【 授权许可】

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