Abstract:
:Proliferation responses of naïve CD4(+) T cells to T-cell receptor and interleukin-7 (IL-7) stimulation were evaluated by using cells from human immunodeficiency virus-positive (HIV(+)) donors. IL-7 enhanced responses to T-cell receptor stimulation, and the magnitude of this enhancement was similar in cells from healthy controls and from HIV(+) subjects. The overall response to T-cell receptor stimulation alone or in combination with IL-7, however, was diminished among viremic HIV(+) donors and occurred independent of antigen-presenting cells. Frequencies of CD127(+) cells were related to the magnitudes of proliferation enhancement that were mediated by IL-7. Thus, IL-7 enhances but does not fully restore the function of naïve CD4(+) T cells from HIV-infected persons.
journal_name
J Viroljournal_title
Journal of virologyauthors
Bazdar DA,Sieg SFdoi
10.1128/JVI.00476-07subject
Has Abstractpub_date
2007-11-01 00:00:00pages
12670-4issue
22eissn
0022-538Xissn
1098-5514pii
JVI.00476-07journal_volume
81pub_type
杂志文章abstract::The vif gene of human immunodeficiency virus type 1 (HIV-1) encodes a basic Mr 23,000 protein that is necessary for production of infectious virions by nonpermissive cells (human lymphocytes and macrophages) but not by permissive cells such as HeLa-CD4. It had been proposed that permissive cells may contain an unident...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.12.10251-10255.1998
更新日期:1998-12-01 00:00:00
abstract::Transgenic mice containing the complete human immunodeficiency virus (HIV) coding sequences fused to the mouse mammary tumor virus long terminal repeat were generated. They were found to produce high levels of authentic gag and env HIV proteins in several tissues known to support mouse mammary tumor virus-driven trans...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.6.3904-3908.1992
更新日期:1992-06-01 00:00:00
abstract::Varicella-zoster virus (VZV) is a highly species-specific herpesvirus that targets sensory ganglionic neurons. This species specificity has limited the study of many aspects of VZV pathogenesis, including neuronal infection. We report development of a highly efficient neuroblastoma cell model to study productive VZV i...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00515-11
更新日期:2011-08-01 00:00:00
abstract::The rescue of influenza viruses by reverse genetics has been described only for the influenza A and B viruses. Based on a similar approach, we developed a reverse-genetics system that allows the production of influenza C viruses entirely from cloned cDNA. The complete sequences of the 3' and 5' noncoding regions of ty...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00910-07
更新日期:2007-10-01 00:00:00
abstract::Serial passage at high multiplicity of pseudorabies virus generates defective interfering particles (DIPs) whose genomes consist at least in part of reiterations of segments of DNA in which sequences originating from different regions of the genome have become covalently linked (F. J. Rixon and T. Ben-Porat, Virology ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.59.2.318-327.1986
更新日期:1986-08-01 00:00:00
abstract::A new subgroup of avian leukosis virus (ALV) that includes a unique env gene, designated J, was identified recently in England. Sequence analysis of prototype English isolate HPRS-103 revealed several other unique genetic characteristics of this strain and provided information that it arose by recombination between ex...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.12.10301-10304.1998
更新日期:1998-12-01 00:00:00
abstract::Human immunodeficiency virus type 2 (HIV-2) strains vary widely in their abilities to grow in Old World monkey (OWM) cells such as those of cynomolgus monkeys (CM). We evaluated eight HIV-2 isolates for their sensitivities to CM TRIM5alpha, an anti-HIV factor in OWM cells. We found that different HIV-2 isolates showed...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00406-07
更新日期:2007-07-01 00:00:00
abstract::Glycans on human immunodeficiency virus (HIV) envelope protein play an important role in infection and evasion from host immune responses. To examine the role of specific glycans, we introduced single or multiple mutations into potential N-linked glycosylation sites in hypervariable regions (V1 to V3) of the env gene ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01691-07
更新日期:2008-01-01 00:00:00
abstract::An R638A mutation of the polymerase acidic protein (PA) subunit of the RNA polymerase of influenza A/WSN/33 virus results in severe attenuation of viral growth in cell culture by promoting the synthesis of defective interfering RNAs. We propose that R638A is an "elongation" mutant that destabilizes PA-RNA template int...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.8.5017-5020.2003
更新日期:2003-04-01 00:00:00
abstract::The envelope glycoproteins of the human immunodeficiency virus (HIV) type 1 are synthesized as a precursor molecule, gp160, which is cleaved to generate the two mature envelope glycoproteins, gp120 and gp41. The cleavage reaction, which is mediated by a host protease, occurs at a sequence highly conserved in retrovira...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.11.4670-4675.1989
更新日期:1989-11-01 00:00:00
abstract::Herpes simplex virus VP22 is a major tegument protein of unknown function. Very recently, we reported that the predominant effect of deleting the VP22 gene was on the expression, localization, and virion incorporation of ICP0. In addition, the Delta22 virus replicated poorly in epithelial MDBK cells. We have also prev...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.22.14057-14068.2005
更新日期:2005-11-01 00:00:00
abstract::Chikungunya virus (CHIKV) is a mosquito-transmitted alphavirus that has been responsible for an epidemic outbreak of unprecedented magnitude in recent years. Since then, significant efforts have been made to better understand the biology of this virus, but we still have poor knowledge of CHIKV interactions with host c...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06390-11
更新日期:2012-03-01 00:00:00
abstract::CD4C/HIV(nef) transgenic (Tg) mice express Nef in CD4+ T cells and in the cells of the macrophage/monocyte/dendritic lineage, and they develop an AIDS-like disease similar to human AIDS. In these mice, Nef is constitutively expressed throughout life. To rule out the contribution of any developmental defects caused by ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01466-09
更新日期:2009-11-01 00:00:00
abstract::After incubation at 37 C for 2 or more days, Basal Medium Eagle (BME) supplemented with 25% fetal calf serum (FCS) was not able to support adequate growth of EB3 and other lines of Burkitt tumor cells. The medium did, however, increase, by a factor of about 10, the number of cells synthesizing herpes-type virus with w...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.2.3.182-191.1968
更新日期:1968-03-01 00:00:00
abstract::The large T antigen encoded by simian virus 40 (SV40) plays essential roles in the infection of permissive cells, leading to production of progeny virions, and in the infection of nonpermissive cells, leading to malignant transformation. Primary mouse embryo fibroblasts (MEFs) are nonpermissive for SV40, and infection...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.12.6872-6880.1991
更新日期:1991-12-01 00:00:00
abstract::The activity of human immunodeficiency virus Rev as a regulator of viral mRNA expression is tightly linked to its ability to shuttle between the nucleus and cytoplasm; these properties are conferred by a leucine-rich nuclear export signal (NES) and by an arginine-rich nuclear localization signal/RNA binding domain (NL...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.24.11899-11910.2000
更新日期:2000-12-01 00:00:00
abstract::Varicella-zoster virus (VZV) open reading frame 4 (ORF4) encodes a putative immediate-early protein which is homologous to herpes simplex virus type 1 (HSV-1) ICP27 on the basis of gene location and similarity in amino acid sequence. In transient expression assays, however, ORF4 and ICP27 exhibit different properties....
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.3.1987-1992.1994
更新日期:1994-03-01 00:00:00
abstract::Cytotoxic T lymphocyte (CTL) activity was assessed in mice immunized with DNA plasmids containing the human immunodeficiency virus type 1 (HIV-1) gp120 envelope (pTMIgp120) or p55gag (pTMIgag) gene regulated by the bacteriophage T7 promoter. Immunization with either plasmid resulted in CTL activity against class I maj...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.10.7827-7831.1997
更新日期:1997-10-01 00:00:00
abstract:UNLABELLED:Bovine papillomavirus 1 E6 interacts with two similar proteins that regulate cell attachment and cell migration called paxillin (PXN) and HIC-5 (also known as HIC5, ARA55, HIC-5, TSC-5, and TGFB1I1). Despite the similarity between HIC-5 and paxillin, paxillin is required for E6 to transform mouse embryo fibr...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00552-14
更新日期:2014-09-01 00:00:00
abstract::Integration of viral DNA into the host chromosome is an essential step in the life cycle of retroviruses and is facilitated by the viral integrase enzyme. The first generation of integrase inhibitors recently approved or currently in late-stage clinical trials shows great promise for the treatment of human immunodefic...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00470-08
更新日期:2008-11-01 00:00:00
abstract::Autoradiographic analyses of deoxyribonucleic acid (DNA) synthesis in randomly growing KB cell cultures infected with equine abortion virus (EAV) suggested that viral DNA synthesis was initiated only at times that coincided with the entry of noninfected control cells into the S phase of the cell cycle. Synchronized cu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.7.6.736-748.1971
更新日期:1971-06-01 00:00:00
abstract:UNLABELLED:Human T-cell lymphotropic virus type 1 (HTLV-1) and HTLV-2 encode auxiliary proteins that play important roles in viral replication, viral latency, and immune escape. The presence of auxiliary protein-encoding open reading frames (ORFs) in HTLV-3, the latest HTLV to be discovered, is unknown. Simian T-cell l...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02150-14
更新日期:2015-01-15 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) infection of CD4-positive lymphocytes is accompanied by acute cytopathic effects, i.e., syncytium formation and single-cell lysis. Syncytium formation involves cell-cell fusion mediated by viral envelope glycoproteins on the surface of infected cells and by CD4 glycoproteins...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.3.1340-1354.1996
更新日期:1996-03-01 00:00:00
abstract::Molecularly cloned proviral DNA of avian oncogenic retrovirus CMII was isolated by screening a genomic library of a CMII-transformed quail cell line with a myc-specific probe. On a 10.4-kilobase EcoRI fragment, the cloned DNA contained 4.4 kilobases of CMII proviral sequences extending from the 5' long terminal repeat...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.54.2.576-585.1985
更新日期:1985-05-01 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) Tat is a mediator of viral transcription and is involved in the control of virus replication. However, associations between HIV-1 Tat diversity and functional effects during primary HIV-1 infection are still unclear. We estimated selection pressures in tat exon 1 using the m...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03297-12
更新日期:2013-05-01 00:00:00
abstract::Little is known about the transmission or tropism of the newly discovered human retrovirus, human T-cell lymphotropic virus type 3 (HTLV-3). Here, we examine the entry requirements of HTLV-3 using independently expressed Env proteins. We observed that HTLV-3 surface glycoprotein (SU) binds efficiently to both activate...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02285-08
更新日期:2009-05-01 00:00:00
abstract::The assembly of hepatitis C virus (HCV) is poorly understood, largely due to the lack of mammalian cell culture systems that are easily manipulated and produce high titers of virus. This problem is highlighted by the inability of the recently established HCV replicon systems to support HCV capsid assembly despite high...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.17.9257-9269.2004
更新日期:2004-09-01 00:00:00
abstract::We investigated the use of infectious cDNA for the production of poliovirus type 1-type 3 recombinants. One such recombinant virus was produced, but a second construct involving the transfer of part of the capsid protein region was not infectious. Our results suggest that the approach may prove valuable but that not a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.57.3.1187-1190.1986
更新日期:1986-03-01 00:00:00
abstract::Infection with various human papillomaviruses (HPVs) induces cervical cancers. Cell surface heparan sulfates (HS) have been shown to serve as primary attachment receptors, and molecules with structural similarity to cell surface HS, like heparin, function as competitive inhibitors of HPV infection. Here we demonstrate...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00998-07
更新日期:2007-10-01 00:00:00
abstract::NF-D is a ubiquitous nuclear factor that has been shown to bind specifically to a DNA element in the polyomavirus regulatory region. In this report, we demonstrate that NF-D is either identical or very similar to a transcription factor that has been variously named YY1, delta, NF-E1, UCRBP, or CF1. Moreover, we show t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.3.1433-1438.1996
更新日期:1996-03-01 00:00:00