Abstract:
:Interferon-α (IFN-α) plays a vital role in combating viral infections especially in the early control after infection. However, the HIV infection has shown substantial level of suppression of IFN-α secretion during initial phase of infection. The reasons behind this impairment are still obscure. As plasmacytoid dendritic cells (pDCs) are the major producers of this cytokine, the mechanisms of HIV-1-mediated suppression of IFN-α production by pDCs using the primary pDCs were explored. The nuclear translocation of the interferon regulatory factor (IRF)-7, a transcription factor for IFN-α genes, is essential for the initiation of IFN-α production in pDCs. The HIV-1-exposed pDCs did not show the translocation of IRF-7 into the nucleus in our experiments. Furthermore, it was also observed that HIV-1 inhibited AKT phosphorylation of PI3K/akt pathway in pDCs, an important step for IRF-7 translocation to nucleus. HIV-1-induced inhibition of AKT phosphorylation and IRF-7 translocation was evident even in the presence of Toll-like receptor-7 agonist stimulation and correlated with IFN-α suppression. The findings suggest that HIV-1 may alter AKT phosphorylation to inhibit the translocation of IRF-7 into pDC nucleus, leading to IFN-α suppression, and this may be the reason for IFN-α abrogation observed in recently infected HIV patients. Understanding of interactions between HIV-1 and signaling pathways leading to IFN-α secretion may provide targets for immune intervention.
journal_name
AIDS Res Hum Retrovirusesjournal_title
AIDS research and human retrovirusesauthors
Dhamanage AS,Thakar MR,Paranjape RSdoi
10.1089/AID.2018.0136subject
Has Abstractpub_date
2019-01-01 00:00:00pages
40-48issue
1eissn
0889-2229issn
1931-8405journal_volume
35pub_type
杂志文章abstract::Iron is a key factor at various stages of HIV life cycle and determines the progression of HIV infection. Data about cellular labile iron pool (LIP) in the settings of contemporary antiretroviral therapy (cART) are lacking. Yet LIP is directly related to the generation of reactive oxygen species, and may contribute to...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2020.0010
更新日期:2020-07-01 00:00:00
abstract::We investigated the Th1 protective and regulatory T and B cell (Treg and Breg) responses to pH1N1 monovalent influenza vaccine (IIV1) in HIV-infected pregnant women on combination antiretroviral therapy (cART). Peripheral blood mononuclear cells (PBMCs) from 52 study participants were cryopreserved before and after va...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2015.0151
更新日期:2015-11-01 00:00:00
abstract::Jurkat cells stably expressing high levels of the HIV-1 Tat protein were generated after transfection with an Epstein-Barr virus-based episomal replicon and selection in hygromycin B. The Jurkat Tat transfectants exhibited a longer doubling time when compared to Jurkat cells or Jurkat cells transfected with the contro...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1995.11.443
更新日期:1995-04-01 00:00:00
abstract::Information about the efficacy of antiretroviral drugs in HIV-1 group O strains as well on the virus evolution in terms of resistance development in vivo is very limited. We assessed the clinical, immunological, and virological response to antiretroviral therapy as well as the selection of drug resistance in six HIV-1...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2005.21.602
更新日期:2005-07-01 00:00:00
abstract:BACKGROUND:Immune activation, which is accompanied by the production of proinflammatory cytokines, is a strong predictor of disease progression in HIV infection. Inflammation is critical in neuronal damage linked to HIV-associated neurocognitive disorders. METHODS:We examined the relationship between plasma cytokine l...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2020.0203
更新日期:2021-01-20 00:00:00
abstract::Assays to determine HIV incidence from cross-sectional surveys have exhibited a high rate of false-recent misclassification in Kenya and Uganda where HIV subtypes A and D predominate. Samples from individuals infected with HIV for at least 2 years with known infecting subtype (133 subtype A, 373 subtype D) were tested...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2012.0105
更新日期:2013-08-01 00:00:00
abstract::We examined risk factors for avascular bone necrosis (AVN) particularly focusing o the question of whether antiretroviral treatment (ART) is associated with the emergence of osteonecrosis. After 11 years of following the entire cohort, 26 patients were found to have AVN. Compared to 260 concurrent HIV-infected control...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2004.20.909
更新日期:2004-09-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,多中心研究
doi:10.1089/AID.2016.0144
更新日期:2017-03-01 00:00:00
abstract::Eosinophils are granulocytic leukocytes that function in both protective and pathological immune responses. They can be infected by HIV-1, but characterization of the infection has been hindered by lack of a productive cell culture model. In the present study, the unique eosinophilic cell line AML14.3D10 was used as a...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/08892220050140955
更新日期:2000-09-20 00:00:00
abstract::A molecular epidemiologic study of HIV-1 in Greenland showed distinct transmission clusters correlated with demographic and behavioral data. Resistance mutations were found in a majority of the pol sequences. The objective of the present study was to estimate prevalence of drug resistance in Greenland and identify tra...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2008.0049
更新日期:2008-08-01 00:00:00
abstract::The Kento-Mwana project was carried out in Pointe Noire, Republic of the Congo, to prevent mother-to-child HIV-1 transmission. To determine the prevalence of different subtypes and transmitted drug resistance-associated mutations, 95 plasma samples were collected at baseline from HIV-1-positive naive pregnant women en...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2015.0105
更新日期:2015-08-01 00:00:00
abstract::Transcriptional regulation is critical for the human immunodeficiency virus 1 (HIV-1) life cycle and is the only step at which the virus amplifies the content of its genetic information. Numerous known and still unknown transcriptional factors, both host and viral, regulate HIV-1 gene expression and latency. This arti...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,评审
doi:10.1089/AID.2011.0263
更新日期:2012-02-01 00:00:00
abstract::Infection with human T lymphotropic virus (HTLV), although asymptomatic in most cases, can lead to severe illnesses, such as adult T cell leukemia/lymphoma or myelopathy/tropical spastic paraparesis. HTLV can be transmitted by whole-blood (WB) transfusion. The prevalence of HTLV among blood donor populations has not b...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2018.0240
更新日期:2019-04-01 00:00:00
abstract::Older HIV-positive patients may experience reduced benefit and increased toxicities from combination antiretroviral therapies (cART) due to late diagnosis, weakened immune systems, and other age-related physiological changes. This study investigates the effect of age on time to virologic suppression and CD4 cell count...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2012.0018
更新日期:2012-12-01 00:00:00
abstract::In order to shed light on the nature of the persistent reservoir of human immunodeficiency virus type 1 (HIV-1), we investigated signs of recent evolution in the pool of proviral DNA in patients on successful HAART. Pro-viral DNA, corresponding to the C2-V3-C3 region of the HIV-1 env gene, was collected from PBMCs iso...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.0089
更新日期:2007-01-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2013.0289
更新日期:2014-07-01 00:00:00
abstract::Multiple impairments in HIV-1-specific cytotoxic T cells (CTL) have been reported, but derangements in HIV-1-specific CD8+ T-cell chemotaxis have not been described previously. We assessed migration to SDF-1alpha (stromal cell-derived factor 1-alpha) and CX3CL1 in vitro and expression of cognate receptors, CXCR4 and C...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2007.0259
更新日期:2008-07-01 00:00:00
abstract::We investigate mutations and correlates according to HIV-1 subtype after virological failure (VF) of standard first-line antiretroviral therapy (ART) (non-nucleoside/nucleotide reverse transcriptase inhibitor [NNRTI] +2 nucleoside/nucleotide reverse transcriptase inhibitor [N(t)RTI]). SECOND-LINE study participants we...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2015.0331
更新日期:2016-09-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922299311150
更新日期:1999-03-20 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1089/aid.1998.14.483
更新日期:1998-04-10 00:00:00
abstract::To evaluate the efficacy, safety and tolerability of switching to a dolutegravir (DTG)-based regimen in a cohort of virological suppressed HIV-infected patients. The dynamics of total HIV-DNA and levels of high-sensitivity c-reactive protein (hsCRP), interleukin-6 (IL-6), soluble-CD14 (sCD14) and D-Dimer were also ana...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2020.0196
更新日期:2021-01-24 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922203763315687
更新日期:2003-03-01 00:00:00
abstract::Natural polymorphisms of HIV-1, often associated with drug resistance, are widely described in protease and reverse transcriptase regions but data on their presence in the integrase region, especially in non-B subtypes, are still very limited. We aimed to characterize naturally occurring polymorphisms in the integrase...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2010.0097
更新日期:2010-10-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2009.0179
更新日期:2010-01-01 00:00:00
abstract::The majority of AIDS patients will experience some degree of dementia induced by human immunodeficiency virus (HIV-1). In this study, we report that treatment of human brain tissue with envelope gp120 of HIV-1 did not cause neuronal death but did cause astrocyte alterations and/or death. Human astrocyte cultures showe...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1993.9.439
更新日期:1993-05-01 00:00:00
abstract::The surface molecule CD4 plays a key role in initiating cellular entry by the human immunodeficiency virus type 1 (HIV-1), and it is now recognized as acting synergistically with select chemokine receptors (coreceptors) in the infection process. The present study was undertaken to determine whether the extracellular r...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/08892220050195801
更新日期:2000-11-20 00:00:00
abstract::We report here the gene for DC-SIGN from Chinese rhesus macaques. DC-SIGN is a C-type lectin expressed by dendritic cells (DCs). It is involved in the interaction of DCs with T cells, and in transmission to T cells of HIV-1 and SIV. Alternative splicing in human DC-SIGN yields A and B isoforms of the protein. The over...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922202760265641
更新日期:2002-09-01 00:00:00
abstract::We studied the ability of several polyionic compounds, previously shown to have activity in vitro against human immunodeficiency virus (anti-HIV) to block binding of anti-CD4 and recombinant HIV gp120 to the CD4 receptor on human lymphocytes. We found that Evans blue and aurin tricarboxylic acid could completely inhib...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1990.6.1125
更新日期:1990-09-01 00:00:00
abstract::The HIV-1 Nef protein is known to be secreted, and our group has shown that Nef is secreted from nef-transfected and HIV-1-infected cells in small exosome-like vesicles (d. 40-100 nm). The role of secreted Nef remains to be fully characterized. Thus, it is important to characterize the nature of and the mechanisms reg...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2009.0068
更新日期:2010-02-01 00:00:00
abstract::The nucleotide sequence of the gp41 transmembrane protein coding region of human immunodeficiency virus type 1 (HIV-1) proviral DNA obtained from blood and cerebrospinal fluid (CSF) from 6 individuals was determined by direct sequencing of polymerase chain reaction (PCR)-amplified DNA. The direct sequencing approach w...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1992.8.53
更新日期:1992-01-01 00:00:00