Abstract:
:To study the variability of human immunodeficiency virus type 1 (HIV-1), we used immunotoxins to select for variants within a population of H9 cells persistently infected with a molecular clone of HIV-1 designated NL4-3. Chimeric immunotoxin CD4-PE40 (a chimeric fusion protein consisting of the amino-terminal two domains of CD4 and the carboxy-terminal domains of Pseudomonas exotoxin A) was used to select for cells lacking cell surface expression of HIV Env (envelope proteins gp160, gp120, and gp41). The cells described here (A1, A7, C9, and E9) fail to express HIV proteins because they have markedly diminished transcription of the integrated provirus (A1, A7, and E9) or no HIV provirus (C9). Analysis demonstrated that two different cloned variants, A1 and E9, contain the complementary sequence of tRNA(3Lys) (45 bp) inserted 3' to the primer-binding site, following by a 169-bp deletion through the start of the gag gene. No HIV mRNA was detected by Northern (RNA) blotting, but PCR demonstrated the presence of the viral message. These variants were found very infrequently in the unselected H9/NL4-3 cell population, and they contained proviruses distinct from that found in the dominant population. In addition, all of these variants had similar patterns of CD4 surface expression that allowed them to escape reinfection within the tissue culture. The data are discussed with regard to mechanisms and errors of HIV reverse transcription, as well as the evolution of mutants within a population of persistently infected cells.
journal_name
J Viroljournal_title
Journal of virologyauthors
Fang H,Pincus SHdoi
10.1128/JVI.69.1.75-81.1995subject
Has Abstractpub_date
1995-01-01 00:00:00pages
75-81issue
1eissn
0022-538Xissn
1098-5514journal_volume
69pub_type
杂志文章abstract::The human immunodeficiency virus type 1 (HIV-1)-encoded RNA-binding protein Tat is known to play an essential role in viral gene expression. In the search for novel compounds to inhibit Tat transactivity, one coumarin derivative, BPRHIV001, was identified, with a 50% effective concentration (EC(50)) against HIV-1 at 1...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00175-11
更新日期:2011-09-01 00:00:00
abstract::MVL2, an enveloped double-stranded DNA mycoplasmavirus, causes a nonlytic infection of Acholeplasma laidlawii leading to the establishment of a persistent infection. Persistently infected clones were found to be resistant to superinfection by homologous virus, but could be infected by heterologous virus. Cells in a pe...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.28.1.254-261.1978
更新日期:1978-10-01 00:00:00
abstract::The ecotropic Cas-Br-E murine leukemia virus (MuLV) and its molecularly cloned derivative pBR-NE-8 MuLV are capable of inducing hind-limb paralysis and leukemia after inoculation into susceptible mice. T1 oligonucleotide fingerprinting, molecular hybridization, and restriction enzyme analysis previously showed that th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.60.3.910-919.1986
更新日期:1986-12-01 00:00:00
abstract:UNLABELLED:Flaviviruses pose a significant threat to both animals and humans. Recently, a novel flavivirus, duck Tembusu virus (DTMUV), was identified to be the causative agent of a serious duck viral disease in Asia. Its rapid spread, expanding host range, and uncertain transmission routes have raised substantial conc...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00197-16
更新日期:2016-06-24 00:00:00
abstract::The NS5A nonstructural protein of hepatitis C virus (HCV) has been shown to inhibit the cellular interferon (IFN)-induced protein kinase R (PKR). PKR mediates the host IFN-induced antiviral response at least in part by inhibiting mRNA translation initiation through phosphorylation of the alpha subunit of eukaryotic in...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.11.5090-5098.2001
更新日期:2001-06-01 00:00:00
abstract::Fluorosulfonylbenzoyl 5'-adenosine (FSBA) bound to one site in simian virus 40 large T antigen (T) and covalently modified greater than 95% of the molecules in a complete reaction. This analog for ATP specifically cross-links to the Mg-phosphate pocket in ATP-binding sites. Cyanogen bromide cleavage and tryptic digest...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.10.4939-4947.1990
更新日期:1990-10-01 00:00:00
abstract::Synthesis of the vesicular stomatitis virus membrane matrix protein and the glycoprotein is inhibited to a greater extent than the synthesis of the nucleocapsid protein, the nonstructural protein, and the large protein when the rate of peptide chain initiation is reduced by exposure of vesicular stomatitis virus-infec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.17.1.283-286.1976
更新日期:1975-01-01 00:00:00
abstract::Vaccinia virus does not grow in Chinese hamster ovary (CHO-K1) cells in the absence of a viral host range factor, cowpox protein CP77. In this study, CP77 was fused to the C terminus of green fluorescence protein (GFP-CP77) and a series of nested deletion mutants of GFP-CP77 was constructed for insertion into a vaccin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00207-06
更新日期:2006-08-01 00:00:00
abstract::Natural killer (NK) cells derived from the human female reproductive tract (FRT) are phenotypically and functionally distinct from those obtained from peripheral blood. Because the FRT is a primary site of human immunodeficiency virus type 1 (HIV-1) infection in women, we determined whether soluble factors secreted by...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00562-09
更新日期:2009-11-01 00:00:00
abstract::Human herpesvirus 8 (HHV-8) viral interleukin-6 (vIL-6) is a cytokine that is poorly secreted and localized largely to the endoplasmic reticulum (ER). It has been implicated, along with other HHV-8 proinflammatory and/or angiogenic viral proteins, in HHV-8-associated Kaposi's sarcoma, primary effusion lymphoma (PEL), ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00909-20
更新日期:2020-09-15 00:00:00
abstract::The herpes simplex virus (HSV) heterodimer gE/gI and another membrane protein, US9, which has neuron-specific effects, promote the anterograde transport of virus particles in neuronal axons. Deletion of both HSV gE and US9 blocks the assembly of enveloped particles in the neuronal cytoplasm, which explains why HSV vir...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01113-20
更新日期:2020-11-09 00:00:00
abstract::Three molecules have been identified as the main cellular factors required for binding and entry of human T-cell leukemia virus type 1 (HTLV-1): glucose transporter 1 (GLUT1), heparan sulfate (HS), and neuropilin 1 (NRP-1). However, the precise mechanism of HTLV-1 cell tropism has yet to be elucidated. Here, we examin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.05783-11
更新日期:2012-03-01 00:00:00
abstract::Polyamine depletion produced by exogenous arginine in Escherichia coliK-12 cultures defective in agmatine ureohydrolase activity resulted in a marked inhibition of the rates of growth and nucleic acid synthesis. Addition of putrescine or spermidine to such depleted cultures restored the control rate of growth and nucl...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.9.3.423-430.1972
更新日期:1972-03-01 00:00:00
abstract::The susceptibility of monocyte-derived cultured dendritic cells (DCs) to human immunodeficiency virus (HIV) infection and their role in viral transmission in the immune response were studied in detail. We observed that highly purified cultured DCs were infected with the T-tropic Lai strain of HIV type 1 (HIV-1Lai) via...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.7.4544-4547.1995
更新日期:1995-07-01 00:00:00
abstract::The putative role of nitric oxide in the neuropathogenesis of Borna disease was investigated by determining changes in the expression of inducible nitric oxide synthase (iNOS) mRNA and constitutively expressed NOS (cNOS) mRNA in brains of Borna disease virus (BDV)-infected rats. iNOS mRNA was not detected in normal ra...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.10.5786-5791.1993
更新日期:1993-10-01 00:00:00
abstract::Under natural conditions and in some experimental models, rabies virus infection of the central nervous system causes relatively mild histopathological changes, without prominent evidence of neuronal death despite its lethality. In this study, the effects of rabies virus infection on the structure of neurons were inve...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01677-07
更新日期:2008-01-01 00:00:00
abstract::We have determined the complete nucleotide sequence of an infectious cloned genome of ground squirrel hepatitis virus (GSHV), a nonpathogenic member of the hepadnavirus group. The genome is 3,311 base pairs long and contains the major open reading frames described for the related human and woodchuck hepatitis B viruse...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.51.2.367-375.1984
更新日期:1984-08-01 00:00:00
abstract::We have used immunofluorescence in parallel with transmission and scanning electron microscopy to characterize the unusual cytoplasmic and nucleolar accumulation of Simian virus 40 (SV40) virion protein (C antigen) at restrictive temperatures (39 to 41 C) in monkey cells infected with a temperature-sensitive mutant of...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.14.6.1530-1546.1974
更新日期:1974-12-01 00:00:00
abstract::Simian virus 40 (SV40) large T antigen (Tag) is a promiscuous transcriptional transactivator; however, its mechanism of transactivation remains unknown. Recent studies have suggested the possible involvement of protein-protein interactions with TBP, the TATA box-binding protein of TFIID, and TEF-1, an enhancer-binding...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.2.1191-1202.1996
更新日期:1996-02-01 00:00:00
abstract::Two poliovirus mutants were isolated that contain an oligonucleotide linker insertion in the 2C-coding region of the viral genome. One, 2C-31, has a strongly temperature-sensitive phenotype and the other, 2C-32, forms small plaques on HeLa cell monolayers at all temperatures. Both mutants have a severe temperature-sen...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.11.4016-4021.1988
更新日期:1988-11-01 00:00:00
abstract::Efforts to develop adenovirus vectors suitable for genetic interventions in humans have identified three major limitations of the most frequently used vector prototype, human adenovirus serotype 5 (Ad5). These limitations--widespread preexisting anti-Ad5 immunity in humans, the high rate of transduction of normal nont...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02425-09
更新日期:2010-10-01 00:00:00
abstract::The proline-rich tandem repeat domain of human mucin MUC1 forms an extended structure containing large repeating loops that are crested by a turn. We show that the repeating-loop structure of MUC1 can be replaced by an antibody complementarity-determining region loop of a human immunodeficiency virus type 1 (HIV-1)-sp...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.10.6557-6562.1996
更新日期:1996-10-01 00:00:00
abstract::Scrapie-associated fibrils (SAFs) are abnormal filamentous structures that are uniquely associated with unconventional slow virus diseases. The antigenic relationships of SAFs from animals infected with four biologically distinct scrapie strains were investigated by using antisera raised to purified SAF proteins. Rabb...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.59.3.676-683.1986
更新日期:1986-09-01 00:00:00
abstract::It is well established that chronic viral infections can cause immune suppression, resulting in increased susceptibility to other infectious diseases. However, the effects of chronic viral infection on T-cell responses and vaccination against highly pathogenic viruses are not well understood. We have recently shown th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01832-19
更新日期:2020-02-14 00:00:00
abstract::It has been suggested that vaccination prior to infection may direct the mutational evolution of human immunodeficiency virus type 1 (HIV-1) to a less fit virus, resulting in an attenuated course of disease. The present study was initiated to explore whether prior immunization might prevent the reversion of the virus ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01193-10
更新日期:2010-12-01 00:00:00
abstract::Boid inclusion body disease (BIBD) is a transmissible viral disease of captive snakes that causes severe losses in snake collections worldwide. It is caused by reptarenavirus infection, which can persist over several years without overt signs but is generally associated with the eventual death of the affected snakes. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00001-20
更新日期:2020-05-18 00:00:00
abstract::A cloned segment of the polyoma virus genome encoding the small T antigen has been fused, in the correct phase for translation, to the 5' end of the beta-galactosidase gene. The hybrid gene, cloned in Escherichia coli, produces a protein resembling the small T antigen. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.36.1.125-132.1980
更新日期:1980-10-01 00:00:00
abstract::The human immunodeficiency virus type 1 (HIV-1) epidemic in Southeast Asia has been largely due to the emergence of clade E (HIV-1E). It has been suggested that HIV-1E is derived from a recombinant lineage of subtype A (HIV-1A) and subtype E, with multiple breakpoints along the E genome. We obtained complete genome se...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.22.10752-10765.2000
更新日期:2000-11-01 00:00:00
abstract::In coliphage 186, 22 essential genes were defined by complementation studies with amber mutants. Eighteen genes were associated with phage morphogenesis: 11 with phage tail formation, and 7 with phage head formation. The remaining four genes are discussed in the accompanying paper (S. M. Hocking and J. B. Egan, J. Vir...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.44.3.1056-1067.1982
更新日期:1982-12-01 00:00:00
abstract::T-cell epitopes on the E2 protein of rubella virus were studied by using 15 overlapping synthetic peptides covering the E2 protein sequence. The most frequently recognized epitopes on E2 were E2-4 (residues 54 to 74), with 5 of 10 tested T-cell lines responding to it. Two CD4+ cytotoxic T-cell cloned isolated from one...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.11.6788-6793.1992
更新日期:1992-11-01 00:00:00