Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Digital do Instituto Evandro Chagas (Patuá) |
Texto Completo: | https://patua.iec.gov.br/handle/iec/4142 |
Resumo: | Background: Human immunodeficiency virus (HIV-1) infection is characterized by high viral replication and a decrease in CD4+ T cells (CD4+TC), resulting in AIDS, which can lead to death. In elite controllers and viremia controllers, viral replication is naturally controlled, with maintenance of CD4+TC levels without the use of antiretroviral therapy (ART). Methods: The aim of the present study was to describe virological and immunological risk factors among HIV-1-infected individuals according to characteristics of progression to AIDS. The sample included 30 treatment-naive patients classified into three groups based on infection duration (> 6 years), CD4+TC count and viral load: (i) 2 elite controllers (ECs), (ii) 7 viremia controllers (VCs) and (iii) 21 nonviremia controllers (NVCs). Nested PCR was employed to amplify the virus genome, which was later sequenced using the Ion PGM platform for subtyping and analysis of immune escape mutations. Results: Viral samples were classified as HIV-1 subtypes B and F. Greater selection pressure on mutations was observed in the group of viremia controllers, with a higher frequency of immunological escape mutations in the genes investigated, including two new mutations in gag. The viral sequences of viremia controllers and nonviremia controllers did not differ significantly regarding the presence of immune escape mutations. Conclusion: The results suggest that progression to AIDS is not dependent on a single variable but rather on a set of characteristics and pressures exerted by virus biology and interactions with immunogenetic host factors. |
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Gomes, Samara Tatielle MonteiroAmoras, Ednelza da Silva GraçaGomes, Érica RibeiroQueiroz, Maria Alice FreitasSousa Júnior, Edivaldo CostaMassafra, Janaína Mota de VasconcelosLemos, Poliana da SilvaVianez Júnior, João Lídio da Silva GonçalvesVallinoto, Antonio Carlos Rosário2020-08-03T18:23:22Z2020-08-03T18:23:22Z2020GOMES, Samara Tatielle Monteiro et al. Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region. BMC Infectious Diseases, v. 20, n. 546, p. 1-11, July 2020.1471-2334https://patua.iec.gov.br/handle/iec/414210.1186/s12879-020-05268-0.Background: Human immunodeficiency virus (HIV-1) infection is characterized by high viral replication and a decrease in CD4+ T cells (CD4+TC), resulting in AIDS, which can lead to death. In elite controllers and viremia controllers, viral replication is naturally controlled, with maintenance of CD4+TC levels without the use of antiretroviral therapy (ART). Methods: The aim of the present study was to describe virological and immunological risk factors among HIV-1-infected individuals according to characteristics of progression to AIDS. The sample included 30 treatment-naive patients classified into three groups based on infection duration (> 6 years), CD4+TC count and viral load: (i) 2 elite controllers (ECs), (ii) 7 viremia controllers (VCs) and (iii) 21 nonviremia controllers (NVCs). Nested PCR was employed to amplify the virus genome, which was later sequenced using the Ion PGM platform for subtyping and analysis of immune escape mutations. Results: Viral samples were classified as HIV-1 subtypes B and F. Greater selection pressure on mutations was observed in the group of viremia controllers, with a higher frequency of immunological escape mutations in the genes investigated, including two new mutations in gag. The viral sequences of viremia controllers and nonviremia controllers did not differ significantly regarding the presence of immune escape mutations. Conclusion: The results suggest that progression to AIDS is not dependent on a single variable but rather on a set of characteristics and pressures exerted by virus biology and interactions with immunogenetic host factors.This work was supported by grants from the Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq (#301869/2017–0), Fundação Amazônia Paraense de Amparo a Estudos e Pesquisas (FAPESPA/ PRONEX-2015) and Universidade Federal do Pará (PAPQ/2019).Federal University of Pará. Biological Science Institute. Laboratory of Virology. Ananindeua, PA, Brazil / Federal University of Pará. Biological Science Institute. Graduate Program in Biology of Infectious and Parasitic Agents. Ananindeua, PA, Brazil.Federal University of Pará. Biological Science Institute. Laboratory of Virology. Ananindeua, PA, Brazil.Federal University of Pará. Biological Science Institute. Laboratory of Virology. Ananindeua, PA, Brazil.Federal University of Pará. Biological Science Institute. Laboratory of Virology. Ananindeua, PA, Brazil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Federal University of Pará. Biological Science Institute. Laboratory of Virology. Ananindeua, PA, Brazil.Federal University of Pará. Biological Science Institute. Laboratory of Virology. Ananindeua, PA, Brazil.engBMCImmune escape mutations in HIV-1 controllers in the Brazilian Amazon regioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleHIV-1 / ultraestruturaLinfócitos T / imunologiaViremiaMutaçãoinfo:eu-repo/semantics/openAccessreponame:Repositório Digital do Instituto Evandro Chagas (Patuá)instname:Instituto Evandro Chagas (IEC)instacron:IECORIGINALImmune escape mutations in HIV-1 controllers in the Brazilian Amazon region.pdfImmune escape mutations in HIV-1 controllers in the Brazilian Amazon region.pdfapplication/pdf1184990https://patua.iec.gov.br/bitstreams/4052339e-e9c0-428f-9738-e66dad2b14c8/download7ff308f3eca1dad25ec3ed502665262dMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-82182https://patua.iec.gov.br/bitstreams/27fb293e-8282-4f0d-b586-d744362b0013/download11832eea31b16df8613079d742d61793MD52TEXTImmune escape mutations in HIV-1 controllers in the Brazilian Amazon region.pdf.txtImmune escape mutations in HIV-1 controllers in the Brazilian Amazon region.pdf.txtExtracted texttext/plain57502https://patua.iec.gov.br/bitstreams/503419fe-0218-4c4e-a293-eaf170c25717/downloadb866f14ca2756912334336ac6f06f7f4MD55THUMBNAILImmune escape mutations in HIV-1 controllers in the Brazilian Amazon region.pdf.jpgImmune escape mutations in HIV-1 controllers in the Brazilian Amazon region.pdf.jpgGenerated Thumbnailimage/jpeg5783https://patua.iec.gov.br/bitstreams/e2c2d2fa-3ebb-44ed-8975-28686904ee64/downloadb697984e2bccf4723a190a06a1792c28MD56iec/41422022-10-20 23:23:38.7oai:patua.iec.gov.br:iec/4142https://patua.iec.gov.brRepositório InstitucionalPUBhttps://patua.iec.gov.br/oai/requestclariceneta@iec.gov.br || Biblioteca@iec.gov.bropendoar:2022-10-20T23:23:38Repositório Digital do Instituto Evandro Chagas (Patuá) - Instituto Evandro Chagas (IEC)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 |
dc.title.pt_BR.fl_str_mv |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
title |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
spellingShingle |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region Gomes, Samara Tatielle Monteiro HIV-1 / ultraestrutura Linfócitos T / imunologia Viremia Mutação |
title_short |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
title_full |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
title_fullStr |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
title_full_unstemmed |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
title_sort |
Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region |
author |
Gomes, Samara Tatielle Monteiro |
author_facet |
Gomes, Samara Tatielle Monteiro Amoras, Ednelza da Silva Graça Gomes, Érica Ribeiro Queiroz, Maria Alice Freitas Sousa Júnior, Edivaldo Costa Massafra, Janaína Mota de Vasconcelos Lemos, Poliana da Silva Vianez Júnior, João Lídio da Silva Gonçalves Vallinoto, Antonio Carlos Rosário |
author_role |
author |
author2 |
Amoras, Ednelza da Silva Graça Gomes, Érica Ribeiro Queiroz, Maria Alice Freitas Sousa Júnior, Edivaldo Costa Massafra, Janaína Mota de Vasconcelos Lemos, Poliana da Silva Vianez Júnior, João Lídio da Silva Gonçalves Vallinoto, Antonio Carlos Rosário |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Gomes, Samara Tatielle Monteiro Amoras, Ednelza da Silva Graça Gomes, Érica Ribeiro Queiroz, Maria Alice Freitas Sousa Júnior, Edivaldo Costa Massafra, Janaína Mota de Vasconcelos Lemos, Poliana da Silva Vianez Júnior, João Lídio da Silva Gonçalves Vallinoto, Antonio Carlos Rosário |
dc.subject.decsPrimary.pt_BR.fl_str_mv |
HIV-1 / ultraestrutura Linfócitos T / imunologia Viremia Mutação |
topic |
HIV-1 / ultraestrutura Linfócitos T / imunologia Viremia Mutação |
description |
Background: Human immunodeficiency virus (HIV-1) infection is characterized by high viral replication and a decrease in CD4+ T cells (CD4+TC), resulting in AIDS, which can lead to death. In elite controllers and viremia controllers, viral replication is naturally controlled, with maintenance of CD4+TC levels without the use of antiretroviral therapy (ART). Methods: The aim of the present study was to describe virological and immunological risk factors among HIV-1-infected individuals according to characteristics of progression to AIDS. The sample included 30 treatment-naive patients classified into three groups based on infection duration (> 6 years), CD4+TC count and viral load: (i) 2 elite controllers (ECs), (ii) 7 viremia controllers (VCs) and (iii) 21 nonviremia controllers (NVCs). Nested PCR was employed to amplify the virus genome, which was later sequenced using the Ion PGM platform for subtyping and analysis of immune escape mutations. Results: Viral samples were classified as HIV-1 subtypes B and F. Greater selection pressure on mutations was observed in the group of viremia controllers, with a higher frequency of immunological escape mutations in the genes investigated, including two new mutations in gag. The viral sequences of viremia controllers and nonviremia controllers did not differ significantly regarding the presence of immune escape mutations. Conclusion: The results suggest that progression to AIDS is not dependent on a single variable but rather on a set of characteristics and pressures exerted by virus biology and interactions with immunogenetic host factors. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-08-03T18:23:22Z |
dc.date.available.fl_str_mv |
2020-08-03T18:23:22Z |
dc.date.issued.fl_str_mv |
2020 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
GOMES, Samara Tatielle Monteiro et al. Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region. BMC Infectious Diseases, v. 20, n. 546, p. 1-11, July 2020. |
dc.identifier.uri.fl_str_mv |
https://patua.iec.gov.br/handle/iec/4142 |
dc.identifier.issn.-.fl_str_mv |
1471-2334 |
dc.identifier.doi.-.fl_str_mv |
10.1186/s12879-020-05268-0. |
identifier_str_mv |
GOMES, Samara Tatielle Monteiro et al. Immune escape mutations in HIV-1 controllers in the Brazilian Amazon region. BMC Infectious Diseases, v. 20, n. 546, p. 1-11, July 2020. 1471-2334 10.1186/s12879-020-05268-0. |
url |
https://patua.iec.gov.br/handle/iec/4142 |
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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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BMC |
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BMC |
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Repositório Digital do Instituto Evandro Chagas (Patuá) |
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