Abstract:
:Pathogenic microorganisms encode proteins that antagonize specific aspects of innate or adaptive immunity. Just as the study of the HIV-1 accessory protein Vif led to the identification of cellular cytidine deaminases as host defense proteins, the study of HIV-1 Vpu recently led to the discovery of the interferon-induced transmembrane protein BST-2 (CD317; tetherin) as a novel component of the innate defense against enveloped viruses. BST-2 is an unusually structured protein that restricts the release of fully formed progeny virions from infected cells, presumably by a direct retention mechanism that is independent of any viral protein target. Its spectrum of activity includes at least four virus families: retroviruses, filoviruses, arenaviruses, and herpesviruses. Viral antagonists of BST-2 include HIV-1 Vpu, HIV-2 and SIV Env, SIV Nef, the Ebola envelope glycoprotein, and the K5 protein of KSHV. The mechanisms of antagonism are diverse and currently include viral cooption of cellular endosomal trafficking and protein degradation pathways, including those mediated by ubiquitination. Orthologs of human BST-2 are present in mammals. Primate BST-2 proteins are differentially sensitive to antagonism by lentiviral Vpu and Nef proteins, suggesting that BST-2 has subjected lentiviruses to evolutionary pressure and presents barriers to cross-species transmission. BST-2 functions not only as an effector of the interferon-induced antiviral response but also as a negative feedback regulator of interferon production by plasmacytoid dendritic cells. Future work will focus on the role and regulation of BST-2 during the innate response to viral infection, on the mechanisms of restriction and of antagonism by viral gene products, and on the role of BST-2 in primate lentiviral evolution. The augmentation of BST-2 activity and the inhibition of virally encoded antagonists, in particular Vpu, represent new approaches to the prevention and treatment of HIV-1 infection.
journal_name
AIDS Res Hum Retrovirusesjournal_title
AIDS research and human retrovirusesauthors
Tokarev A,Skasko M,Fitzpatrick K,Guatelli Jdoi
10.1089/aid.2009.0253subject
Has Abstractpub_date
2009-12-01 00:00:00pages
1197-210issue
12eissn
0889-2229issn
1931-8405journal_volume
25pub_type
杂志文章,评审abstract::Abstract Multiple HIV-1 subtypes and circulating recombinant forms (CRFs) are known to cocirculate in Africa. In West Africa, the high prevalence of CRF02_AG, and cocirculation of subtype A, CRF01_AE, CRF06_cpx, and other complex intersubtype recombinants has been well documented. Mali, situated in the heart of West A...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2008.0111
更新日期:2009-01-01 00:00:00
abstract::The gene encoding the major envelope glycoprotein of the HIV-SF2 isolate was engineered for the secretion of recombinant gp120 (rgp120SF2) from permanent Chinese hamster ovary (CHO) cell lines. Cellular production methods were scaled up and a method for purification of the secreted glycoprotein was devised. Mild purif...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1993.9.1233
更新日期:1993-12-01 00:00:00
abstract::HIV infection is a risk factor for the tumorigenesis including non-AIDS-defining cancers such as those of the gastrointestinal tract. However, the mechanisms underlying such cancer outgrowth are still unknown. Furthermore, combined HIV/cancer studies are difficult to evaluate using primate models or in the clinical pa...
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::Tuberculosis (TB) is the major opportunistic infection of HIV-infected patients in developing countries and is associated with activation of the immune system and increased HIV-1 expression. The aim of this study was to explore the biological properties of HIV-1 isolates from patients with active TB. Ten HIV-1 subtype...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922201750236979
更新日期:2001-05-20 00:00:00
abstract::An aqueous extract of Phyllanthus niruri (Euphorbiaceae) inhibited human immunodeficiency virus type-1 reverse transcriptase (HIV-1-RT). The inhibitor against HIV-1-RT in this plant was purified by combination of three column chromatographies, Sephadex LH-20, cellulose, and reverse-phase high-performance liquid chroma...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1992.8.1937
更新日期:1992-11-01 00:00:00
abstract::A comparative study at the genomic and protein level was performed between two immunologically related spumaretroviruses, the human HSRV and the simian SFV6. Cross immunoprecipitation analysis with specific polyclonal and monoclonal antisera indicates shared antigenic determinants. However, restriction analysis of the...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1990.6.951
更新日期:1990-07-01 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) spends a significant part of its life cycle as latent provirus in nonactivated cells. It induction requires mitogen stimulation. TPA treatment induces HIV-1 transcription by protein kinase C (PKC)-mediated activation of the cellular transcription factor NF-kB. PKC activation...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1992.8.245
更新日期:1992-02-01 00:00:00
abstract::HIV-1 disease is associated with many infectious and neoplastic complications. This is particularly true of the genitourinary tract, where high rates of renal disease, neoplasms, voiding and erectile dysfunction, hematuria, opportunistic genitourinary infections, and epididymo-orchitis are found in HIV-1-infected indi...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:
更新日期:1998-04-01 00:00:00
abstract::Human immunodeficiency virus (HIV) infection represents a major global health problem, with HIV now recognized as the fourth leading cause of death on a worldwide basis. One approach to developing effective anti- HIV interventions is to identify and understand the molecular mechanisms by which natural genetic variatio...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.22.925
更新日期:2006-10-01 00:00:00
abstract::HIV-1 Vif, Vpr, and Vpu proteins have a profound effect on efficient viral replication and pathogenesis. This study describes the genotypic characterisation of vif , vpr and vpu from 20 South African HIV-1 subtype C primary isolates, and extensive analysis and comparison of known motifs. All HIV-1 subtype C Vif, Vpr a...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.0181
更新日期:2007-02-01 00:00:00
abstract::This study determined the prevalence of human immunodeficiency virus (HIV) infection and its associated factors in female sex workers (FSWs) from the municipality of Bragança in the state of Pará, Brazil. A cross-sectional study using a respondent-driven sampling method was used to investigate 137 FSWs. They were inte...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2019.0032
更新日期:2019-09-01 00:00:00
abstract::Inhibitory factors to human immunodeficiency virus type 1 (HIV-1) in saliva may be responsible for the infrequent isolation of virus from saliva and also may account for the marked infrequency of salivary and/or oral transmission of HIV-1. Incubation of HIV-1 with human saliva followed by addition of the mixture to su...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1990.6.1425
更新日期:1990-12-01 00:00:00
abstract::The HIV epidemic in Russia, one of the world's fastest growing, has been concentrated mostly among people who inject drugs (PWID). We sought to explore the epidemiology of the epidemic in St. Petersburg by sampling from the highest risk groups of PWID and men who have sex with men (MSM) and use viral sequencing data t...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2014.0150
更新日期:2015-06-01 00:00:00
abstract::We generated DNA constructs expressing soluble truncated forms of the envelope of SF162, a neutralization-resistant primary human immunodeficiency virus type 1 isolate, and SF162AV2, a neutralization-susceptible virus derived from SF162 after the deletion of 30 amino acids from the V2 loop. The constructs express the ...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/08892220050058407
更新日期:2000-07-01 00:00:00
abstract::Monocytes are known as an alternative target for HIV/SIV infection, but the contribution of monocytes to viral spread in a host is unclear. In this study, CD14 monocytes were monitored in 6 macaques until six weeks postinfection (wpi) with SIVmac239 to evaluate their contribution to viral load. The monocyte count in b...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.0208
更新日期:2007-03-01 00:00:00
abstract::Simian species of Asian and African origin are naturally infected with the simian T cell leukemia virus type I (STLV-I). Like the closely related human T cell leukemia virus type I (HTLV-I), STLV-I is primarily cell associated, and typical infections exhibit low viral burdens. Four macaques experimentally inoculated w...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1997.13.1147
更新日期:1997-09-01 00:00:00
abstract::Myeloid dendritic cells (mDCs) are essential for initiation of adaptive immune responses but are depleted in HIV infection. Evidence suggests that apoptosis mediates loss, and to further understand the pathways involved, expression of caspases mediating apoptosis via the extrinsic and intrinsic pathways was analyzed. ...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2012.0179
更新日期:2013-04-01 00:00:00
abstract::Retroviruses have been suggested as possible pathogenic factors in multiple sclerosis (MS), supported by the observation that endogenous retroviruses are activated in MS patients. Different members of the herpes family of which several are neurotropic have also been suggested as factors in MS pathogenesis. Further, in...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922204323048168
更新日期:2004-04-01 00:00:00
abstract::Infection with the human immunodeficiency virus (HIV) leads to a progressive immunodeficiency characterized by decreasing levels of CD4+ T lymphocytes. VaxSyn, a vaccine based on the recombinant envelope glycoprotein subunit (rgp160) of HIV-1IIIB, was used to immunize HIV-infected patients to determine whether its adm...
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::The human endogenous retrovirus, type K (HERV-K) represents the most biologically active form of known retroelements present in the human genome. Several HERV-K genomes have transcriptionally active open reading frames and encode their own protease (PR). The HERV-K PR has been shown to authentically cleave human immun...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922200750054701
更新日期:2000-12-10 00:00:00
abstract::The proportion of human immunodeficiency virus type 1 (HIV-1) among Vietnamese injecting drug users (IDUs) in Melbourne, Australia exceeds that of the background population. To investigate the molecular epidemiology of HIV-1 among this group, the C2-V4 region of the HIV-1 envelope was directly sequenced from 11 Vietna...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2004.20.1364
更新日期:2004-12-01 00:00:00
abstract::Population genotyping (PG) can underestimate resistance if resistance-containing low abundance variants go undetected. PG and clonal analysis (CA) results were compared in virologic failures (VFs) from a 48-week clinical trial that evaluated once-daily fosamprenavir/ritonavir (FPV/r) 1400 mg/100 mg or atazanavir/riton...
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.2009.0189
更新日期:2010-04-01 00:00:00
abstract::The Tax protein encoded by HTLV-1 plays a key role in the development of ATL in infected individuals. Our previous studies showed that tax transgenic mice develop disease that is almost identical to human ATL, with widespread organ invasion by lymphomatous cells and the development of leukemia. The same pathology deve...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2009.0212
更新日期:2010-05-01 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::HIV antigens were detected by immunoelectron microscopy at the surface of human and simian T4 lymphocytes that had been infected in vitro. HIV antigens were detected at the surface of cells exhibiting viral particles but also at the surface of cells before the release of virions. The latter cells may be considered imm...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1989.5.107
更新日期:1989-02-01 00:00:00
abstract::The pharmacokinetics and short-term safety of atazanavir 150 and 200 mg, when coadministered with saquinavir/ritonavir 1600/100 mg once daily, were evaluated. On day 1, atazanavir 150 mg once daily, was added to saquinavir/ritonavir regimens and sampling was performed to evaluate saquinavir, ritonavir, and atazanavir ...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2006.22.749
更新日期:2006-08-01 00:00:00
abstract::Several reports have suggested an increased prevalence of osteopenia and osteoporosis in HIV-infected individuals. Vitamin D deficiency may be a risk factor for osteoporosis and bone fractures. We aimed to determine the prevalence of vitamin D insufficiency in an outpatient HIV clinic in Boston. We collected serum lev...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2008.0183
更新日期:2009-01-01 00:00:00
abstract::The extraordinarily high mutation rate of HIV suggests that the viral population exists near the threshold for viral viability. An increase in mutation could mediate a lethal increase in the already high proportion of defective viruses. We initially tested this hypothesis by culturing HIV-infected cells in mutagenic d...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/088922200309539
更新日期:2000-01-01 00:00:00
abstract::Studies of HIV molecular evolution and pathogenesis have relied on the polymerase chain reaction (PCR) to provide sequence information from infected tissues. Until recently, studies have been constrained by the limited length of fragments that can be reliably amplified. The addition of a thermostable 3'-exonuclease ac...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1996.12.303
更新日期:1996-03-01 00:00:00
abstract::Abstract In southern Brazil, CRF31_BC is the major HIV-1 recombinant form and URFs_BC occurs very infrequently. The near full-length genomes of four samples displaying a similar recombination profile in the integrase region and different profiles in the protease/reverse transcriptase regions were analyzed to elucidate...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.2009.0167
更新日期:2009-12-01 00:00:00