Abstract:
:We have investigated the role of vif in maedi-visna virus (MVV), a lentivirus of sheep, by studying in vitro replication of vif-deleted MVV in several cell types, and the effects of vif deletion on in vivo infection. By measuring RT activity, we found that in comparison to wild-type MVV, growth of vif-deleted MVV was similar in fetal ovine synovial (FOS) cells, highly attenuated in sheep choroid plexus (SCP) cells, and not detectable in macrophages, natural target cells of MVV. Productive infection by vif-deleted MVV could not be demonstrated in sheep. An increased mutation frequency was observed in DNA produced by endogenous reverse transcription of viral RNA in vif-deleted virions, indicating the existence of a factor comparable in action to human APOBEC3G. These results suggest that the vif gene of MVV is essential for infectivity and that the Vif protein protects the viral genome from enpackaged mutagenic activities.
journal_name
Virologyjournal_title
Virologyauthors
Kristbjörnsdóttir HB,Andrésdóttir V,Svansson V,Torsteinsdóttir S,Matthíasdóttir S,Andrésson OSdoi
10.1016/j.virol.2003.09.044subject
Has Abstractpub_date
2004-01-05 00:00:00pages
350-9issue
1eissn
0042-6822issn
1096-0341pii
S0042682203007633journal_volume
318pub_type
杂志文章相关文献
VIROLOGY文献大全abstract::Measles virus V protein represses genome replication through a poorly understood mechanism, which led us to investigate whether V protein might be an RNA-binding modulatory factor. Recombinant V protein, expressed from transfected HEp-2 cells or E. coli, formed protein-RNA complexes with poly-guanosine (poly-G) or pol...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2005.12.018
更新日期:2006-04-25 00:00:00
abstract::Marek's Disease Virus (MDV) infects chickens via respiratory route and causes lymphomas in internal organs including gastrointestinal tract. MDV infection causes a shift in the gut microbiota composition. However, interactions between the gut microbiota and immune responses against MDV infection are not well understoo...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2020.10.011
更新日期:2021-01-15 00:00:00
abstract::We describe the in vitro selection and characterisation of virus derived from B/Beijing/1/87 passaged in the presence of zanamivir. During zanamivir passage, the phenotype of virus isolates was either drug dependent or drug resistant in plaque reduction assays. The susceptibility of the neuraminidase of the drug-depen...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1999.0058
更新日期:1999-12-20 00:00:00
abstract::The identification of mechanisms that prevent infection with human immunodeficiency virus (HIV) or simian immunodeficiency virus (SIV) would facilitate the development of an effective AIDS vaccine. In time-course experiments, protection against detectable superinfection with homologous wild-type SIV was achieved withi...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2004.09.026
更新日期:2004-12-05 00:00:00
abstract::Chlorella viruses or chloroviruses form polysaccharide fibers on the cell wall of host Chlorella cells after infection. Such polysaccharides are either hyaluronan synthesized by virus-encoded hyaluronan synthase (HAS) or chitin synthesized by viral chitin synthase (CHS). Some chloroviruses synthesize both hyaluronan (...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2005.07.026
更新日期:2005-11-10 00:00:00
abstract::A pseudorabies virus (PrV) mutant, deficient in the nonessential glycoprotein E (gE) and expressing the LacZ gene (gE- beta gal+ PrV), and its rescued virus were inoculated intranasally in mice. The median lethal dose of gE- beta gal+ PrV was similar to that of the parental Kaplan strain, but mice survived longer and ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1996.0247
更新日期:1996-05-01 00:00:00
abstract::Cells that express the human papillomavirus (HPV) type 16 E7 oncoprotein are predisposed to undergo apoptosis. Transgenic mice that have E7 expression targeted to either the retinal photoreceptor cells or the lens cells exhibit signs of apoptosis in cells attempting to undergo differentiation. We established a cell cu...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1997.8851
更新日期:1997-12-08 00:00:00
abstract::LP-BM5, a retroviral isolate, induces a disease featuring an acquired immunodeficiency syndrome termed murine AIDS (MAIDS). Many of the features of the LP-BM5-initiated disease are shared with HIV/AIDS. Our lab has shown that the interaction of B and CD4 T cells that is central to MAIDS pathogenesis requires ligation ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2006.10.002
更新日期:2007-03-30 00:00:00
abstract::The amino acid sequence of BMV (brome mosaic virus) coat protein is presented and compared with the sequence derived from RNA structure. Apart from removal of the N-terminal methionine residue and acetylation of the following serine residue, no post-translational modifications occur. ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(83)90193-9
更新日期:1983-09-01 00:00:00
abstract::Virions of southern bean mosaic virus (SBMV) show two distinct sensitivity patterns upon heating. Infectivity loss and capsid denaturation occur concurrently if virions are exposed at 50-55 degrees in 0.1 M sodium phosphate buffer, pH 7.5, or 0.1 M glycine-phosphate buffer, pH 9.0. Contrastingly, virions are inactivat...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(81)90437-2
更新日期:1981-01-30 00:00:00
abstract::Recent studies have shown enhanced antitumor efficacy with adenoviruses that either lack E1B-19K or overexpress E3-11.6K (also known as adenoviral death protein). E1B-19K is a well-characterized anti-apoptotic protein, and viruses with E1B-19K deletions show increased cytopathicity. However, the mechanism of cell kill...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2004.06.007
更新日期:2004-09-01 00:00:00
abstract::During replication, the lengthy genome of dsDNA viruses is translocated with remarkable velocity into the limited space within the preformed procapsid. We previously found that a viral-encoded RNA (pRNA) played a key role in bacterial virus phi29 DNA translocation. Design of mutant pRNA sets containing two and three i...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.2000.0771
更新日期:2001-03-15 00:00:00
abstract::Previous in vitro work demonstrated the incorporation of the major inducible 70k heat shock protein (i.e., 72k HSP) into the biologically active light nucleocapsid (L-NC) variant of canine distemper virus (CDV). Here, in vitro induction of the cellular stress response, characterized by elevated cytoplasmic and intranu...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1993.1072
更新日期:1993-02-01 00:00:00
abstract::Human cytomegalovirus (HCMV) can be isolated from peripheral blood leukocytes; however, in vitro, only abortive infection of monocytes, lymphocytes, and granulocytes has been detected. These studies demonstrate that freshly isolated monocytes can be infected with HCMV. Infection of monocytes was not associated with lo...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1993.1383
更新日期:1993-08-01 00:00:00
abstract::Hepatitis C virus (HCV) infection is a confirmed risk factor for hepatocellular carcinoma (HCC). Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) possesses tumor suppression function that is frequently defective in HCC tumors. PTEN-Long, a translation isoform of PTEN, functions in a cell non-autonomous m...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2017.08.002
更新日期:2017-11-01 00:00:00
abstract::In this study we report the development and optimization of two minigenome rescue systems for Nipah virus, a member of the Paramyxoviridae family. One is mediated by the T7 RNA polymerase supplied either by a constitutively expressing cell line or by transfection of expression plasmids and is thus independent from inf...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2007.08.008
更新日期:2008-01-05 00:00:00
abstract::Frog virus 3 (FV3) is the type species member of the genus Ranavirus (family Iridoviridae). To better understand the molecular mechanisms involved in the replication of FV3, including transcription of its highly methylated DNA genome, we have determined the complete nucleotide sequence of the FV3 genome. The FV3 genom...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2004.02.019
更新日期:2004-05-20 00:00:00
abstract::Myeloid differential primary response protein (MyD88) is a critical component in the signaling cascade through Toll-like receptors (TLRs) and is induced by alpha interferon (IFN-alpha). To examine the role of MyD88 in the antiviral activity of IFN-alpha against hepatitis B virus (HBV), we established MyD88 stably expr...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2003.11.005
更新日期:2004-02-20 00:00:00
abstract::H5 and H7 avian influenza viruses can become highly pathogenic in chickens after interspecies transmission. These viruses have transmitted directly to humans from birds in Eurasia and Africa (H5N1), the Netherlands (H7N7), and Canada (H7N3). Here we report antigenic, sequence, and phylogenetic analyses of H7N3 viruses...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2009.05.008
更新日期:2009-08-01 00:00:00
abstract::A mutant (Tbts7) of alfalfa mosaic virus, the coat protein of which is unable to activate the viral genome (the RNA species 1, 2, and 3, which need some coat protein for infectivity) at 30 degrees , can be rescued at this temperature by adding to the inoculum wild-type RNA 3 (the genome part that contains the coat pro...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(82)90528-1
更新日期:1982-02-01 00:00:00
abstract::The complete nucleotide sequence of the nucleocapsid (N) gene of lettuce necrotic yellows virus (LNYV), the type member of the genus Cytorhabdovirus of plant rhabdoviruses, has been determined from cDNA clones of both the viral genomic and messenger RNAs. The previously identified N gene was adjacent to the 3' leader ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1994.1438
更新日期:1994-08-01 00:00:00
abstract::Tandemers 2MG, 2MG3, 3MG and 4MG are derivatives of the potent anti-HIV-1 microbicide candidate griffithsin (GRFT). We compared these compounds anti-HIV-1 activity to GRFT using the viruses CAP206.08 and CAAN5342.A2 that have decreased sensitivity to this lectin. The 2MG and 2MG3 tandemers had similar activity to GRFT...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2020.01.017
更新日期:2020-05-01 00:00:00
abstract::A major neutralizing epitope (here referred to as the T332 epitope) located on the lateral surface of domain III (DIII) of the West Nile virus (WNV) envelope protein has been identified based on the analysis of murine monoclonal antibodies. However, little is known about the humoral immune response against WNV in a na...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2006.08.047
更新日期:2007-03-15 00:00:00
abstract::A reporting replicon of West Nile virus (WN) was used to distinguish between the function of the 3' untranslated region (UTR) in viral translation and RNA replication. Deletions of various regions of the 3' UTR of the replicon did not significantly affect viral translation, but abolished RNA replication. A systematic ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2004.07.022
更新日期:2005-01-20 00:00:00
abstract::We previously showed that reduced infectivity of HIV with incompletely processed capsid-spacer protein 1 (CA-SP1) is rescued by cellular activation or increased expression of HSP90AB1, a member of the cytosolic heat shock protein 90 family. Here we show that HSP90AB1 is present in HIV virions and that HSP90AB1, but no...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2012.11.005
更新日期:2013-02-05 00:00:00
abstract::Avian influenza A viruses of the H5 and H7 subtypes periodically cause severe outbreaks of disease in poultry. The question we wished to address in this study is whether these highly pathogenic strains constitute unique lineages or whether they and related nonpathogenic viruses are derived from common ancestors in the...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1995.1301
更新日期:1995-06-01 00:00:00
abstract::Feline panleukopenia virus (FPV) is a pathogen whose canine-adapted form (canine parvovirus (CPV)) emerged in 1978. These viruses infect by binding host transferrin receptor type-1 (TfR), but also hemagglutinate erythrocytes. We show that hemagglutination involves selective recognition of the non-human sialic acid N-g...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2013.02.009
更新日期:2013-05-25 00:00:00
abstract::Replication and transmission of avian influenza virus in humans poses a pandemic threat. The molecular determinants that facilitate this process are not well understood. We used DBA/2 mice to identify viral factors that mediate the difference in pathogenesis between a virulent (H7N3) and a non-virulent (H7N9) avian in...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2016.04.013
更新日期:2016-07-01 00:00:00
abstract::During head assembly of phage T3, DNA is packaged into the cavity of a preformed protein shell, called the prohead, with the aid of noncapsid, packaging proteins, the products of genes 18 and 19 (gp18 and gp19). gp18 and gp19 separately form complexes with DNA and proheads, respectively. These complexes associate to f...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(91)90550-u
更新日期:1991-12-01 00:00:00
abstract::It is unknown which HIV proteins to target by vaccination in order to generate the most effective CD8 T-cell immunity. We recently immunized SIV(mac251)-infected pigtail macaques with Gag peptides or a cocktail of peptides spanning all SIV proteins, including SIV Env. High-level SIV Env-specific CD8 T-cell responses w...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2008.11.030
更新日期:2009-02-05 00:00:00