Abstract:
:To gain further insight on the function of the herpes simplex virus type 1 (HSV-1) packaging signal (a sequence), we constructed a recombinant virus containing a unique a sequence, which was flanked by two loxP sites in parallel orientation. The phenotype of this recombinant, named HSV-1 LaL, was studied in cell lines which either express or do not express Cre recombinase. Although LaL virus multiplication was only slightly reduced in standard cell lines, its growth was strongly inhibited in Cre-expressing cells. In these cells, a sequences were detected mostly in low-molecular-weight DNA circles, indicating that they had been excised from virus DNA by site-specific recombination. Deletion of the a sequences from the viral genome resulted in the accumulation of uncleaved replication intermediates, as observed by pulsed-field gel electrophoresis. B-type capsids also accumulated in these cells, as shown both by electron microscopy and by sucrose gradient sedimentation. Further examination of the status of a sequences in Cre-expressing cells indicated that high-level amplification of this sequence can occur in the absence of the cleavage-packaging process. Moreover, the amplified a signals in small circular DNA molecules remained uncleaved, indicating that these molecules were not able to efficiently interact with the cleavage-packaging machinery. The cleavage-packaging machinery and the structural proteins required to assemble virions were, however, functional in HSV-1 LaL-infected Cre-expressing cells, since this system could be used to package plasmid DNA harboring an origin of virus replication and one normal a signal. This is the first study in which accumulation both of uncleaved replication intermediates and of B capsids has been obtained in the presence of the full set of proteins required to package virus DNA.
journal_name
J Viroljournal_title
Journal of virologyauthors
Logvinoff C,Epstein ALdoi
10.1128/jvi.74.18.8402-8412.2000subject
Has Abstractpub_date
2000-09-01 00:00:00pages
8402-12issue
18eissn
0022-538Xissn
1098-5514journal_volume
74pub_type
杂志文章abstract::We have previously described several helper independent vector constructions (S. Hughes and E. Kosik, Virology 136:89-99, 1984; J. Sorge and S. H. Hughes, J. Mol. Appl. Genet. 1:547-599, 1982; J. Sorge, B. Ricci, and S. Hughes, J. Virol. 48:667-675, 1983), all of which derive from Rous sarcoma virus. In this report we...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.10.3004-3012.1987
更新日期:1987-10-01 00:00:00
abstract:UNLABELLED:Inhibitor-of-apoptosis (IAP) proteins are key regulators of the innate antiviral response by virtue of their capacity to respond to signals affecting cell survival. In insects, wherein the host IAP provides a primary restriction to apoptosis, diverse viruses trigger rapid IAP depletion that initiates caspase...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03659-14
更新日期:2015-04-01 00:00:00
abstract::The membrane-proximal region of the human immunodeficiency virus type 1 (HIV-1) transmembrane protein (TM) is critical for envelope (Env)-mediated membrane fusion and contains the target for broadly reactive neutralizing antibody 2F5. It has been proposed that 2F5 neutralization might involve interaction of its long, ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.80.5.2539-2547.2006
更新日期:2006-03-01 00:00:00
abstract::Vaccinia virus has a wide host range and infects mammalian cells of many different species. This suggests that the cell surface receptors for vaccinia virus are ubiquitously expressed and highly conserved. Alternatively, different receptors are used for vaccinia virus infection of different cell types. Here we report ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.2.1577-1585.1998
更新日期:1998-02-01 00:00:00
abstract::The Vif protein of human immunodeficiency virus type 1 (HIV-1) is important for virion infectivity. Previous studies have shown that vif-defective virions exhibit structural abnormalities in the virus core and are defective in the ability to complete proviral DNA synthesis in acutely infected cells. We developed novel...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.23.11055-11066.2000
更新日期:2000-12-01 00:00:00
abstract::A ribonucleoprotein particle containing about 20% ribonucleic acid (RNA), and containing little if any phospholipid or glucosamine, was recovered in high yield after treatment of Schmidt-Ruppin strain of Rous sarcoma virus and B77 virus with the nonionic detergent Nonidet P-40. This structure, which probably derives f...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.10.5.1010-1020.1972
更新日期:1972-11-01 00:00:00
abstract::RNA silencing is a potent means of antiviral defense in plants and animals. A hallmark of this defense response is the production of 21- to 24-nucleotide viral small RNAs via mechanisms that remain to be fully understood. Many viruses encode suppressors of RNA silencing, and some viral RNAs function directly as silenc...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02339-06
更新日期:2007-03-01 00:00:00
abstract::A thorough understanding of the diversity of viruses in wildlife provides epidemiological baseline information about potential pathogens. Metagenomic analysis of the enteric viral flora revealed a new anellovirus and bocavirus species in pine martens and a new circovirus-like virus and geminivirus-related DNA virus in...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06373-11
更新日期:2012-02-01 00:00:00
abstract::Accurate and sensitive quantitation of infectious human immunodeficiency virus (HIV) has been difficult to achieve. In this report, a quantitative focal immunoassay (FIA) for HIV was developed using human HeLa cells rendered susceptible to HIV infection by introduction of the CD4 gene via a retrovirus vector. Infected...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.10.3779-3788.1988
更新日期:1988-10-01 00:00:00
abstract::The reticuloendotheliosis viruses (REVs), originally isolated from avian species, constitute a group of retroviruses which are more closely related to mammalian retroviruses than to other avian retroviruses. The envelope glycoproteins of members of the REV group display a striking amino acid sequence identity with a g...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.6.3448-3454.1992
更新日期:1992-06-01 00:00:00
abstract::In search of an anti-transcriptase, antibody was raised in rabbits to partially purified, soluble NS protein present in cytoplasmic extracts of cells infected with the Indiana serotype of vesicular stomatitis (VSInd) virus. This antiserum gave specific reactions of identity by agar immunodiffusion with both cytoplasmi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.15.6.1357-1366.1975
更新日期:1975-06-01 00:00:00
abstract::The nef genes of the human immunodeficiency viruses type 1 and 2 (HIV-1 and HIV-2) and the related simian immunodeficiency viruses (SIVs) encode a protein (Nef) whose role in virus replication and cytopathicity remains uncertain. As an attempt to elucidate the function of nef, we characterized the nucleotide and corre...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.8.4639-4650.1993
更新日期:1993-08-01 00:00:00
abstract::Vaccine-induced memory is necessary for protective immunity to pathogens, but many viruses induce a state of transient immune suppression that might contribute to the inability of a vaccine to elicit immunity. We evaluated here the fate of bystander T cells activated by third party cognate antigens during acute viral ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02516-10
更新日期:2011-06-01 00:00:00
abstract::The molecular mechanism by which retroviral Gag proteins are directed to the plasma membrane for the formation of particles (budding) is unknown, but it is widely believed that the MA domain, located at the amino terminus, plays a critical role. Consistent with this idea, we found that small deletions in this segment ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.7.3804-3812.1991
更新日期:1991-07-01 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::The entry of enveloped viruses into cells is normally mediated by fusion between viral and cellular membranes, in which the fusion peptide plays a crucial role. The fusion peptides of group II nucleopolyhedrovirus (NPV) F proteins are quite conserved, with a hydrophobic region located at the N terminal of the F(1) fra...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00368-08
更新日期:2008-08-01 00:00:00
abstract::The purpose of this study was to determine whether a cell surface protein that can serve as coreceptor for herpes simplex virus type 1 (HSV-1) entry, herpesvirus entry mediator (previously designated HVEM but renamed HveA), also mediates HSV-1-induced cell-cell fusion. We found that transfection of DNA from KOS-804, a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.7.5802-5810.1998
更新日期:1998-07-01 00:00:00
abstract::Interaction between viral proteins is necessary for viral replication and viral particle assembly. We used the yeast two-hybrid assay to identify interactions among all the mature proteins of the hepatitis C virus. The interaction between NS3 and NS3 was one of the strongest viral protein-protein interactions detected...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.1.205-214.2001
更新日期:2001-01-01 00:00:00
abstract::As nonacademic careers in science have become less and less "alternative," one field that has consistently attracted early-career virologists is public health research. The desire to make tangible contributions to public health needs and better protect the public from infectious disease often motivates the transition....
journal_title:Journal of virology
pub_type: 杂志文章,评审
doi:10.1128/JVI.01416-16
更新日期:2017-04-13 00:00:00
abstract::Monoclonal antibodies (MAbs) directed against the E2 glycoprotein of mouse hepatitis virus (MHV) have been classified according to their ability to bind to either of the two purified 90,000-molecular-weight subunits (90K subunits) of the 180K peplomeric glycoprotein E2. Correlation with previously reported information...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.6.3051-3055.1990
更新日期:1990-06-01 00:00:00
abstract::The family Caliciviridae is divided into four genera and consists of single-stranded RNA viruses with hosts ranging from humans to a wide variety of animals. Human caliciviruses are the major cause of outbreaks of acute nonbacterial gastroenteritis, whereas animal caliciviruses cause various host-dependent illnesses w...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.12.6469-6479.2004
更新日期:2004-06-01 00:00:00
abstract::We constructed a matched set of plasmids to investigate the interactions of essential core sequences of the simian virus 40 replication origin with flanking regulatory sequences. Deletions of either T-antigen-binding region I or the 21-base-pair repeated promoter elements reduced replication to 50 to 70% of wild-type ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.57.1.138-144.1986
更新日期:1986-01-01 00:00:00
abstract::Feline calicivirus is a major causative agent of respiratory disease in cats. It is also one of the few cultivatable members of Caliciviridae. We have examined the entry process of feline calicivirus (FCV). An earlier study demonstrated that acidification in endosomes may be required. We have confirmed this observatio...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02452-05
更新日期:2006-08-01 00:00:00
abstract::We have developed a system in which vesicular stomatitis virus (VSV) minigenomes encoding viral structural proteins can be expressed from plasmids. These RNAs can be replicated, transcribed, and packaged into infectious particles when coexpressed with the other VSV proteins. The minigenomes contain either the glycopro...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.5.2946-2953.1995
更新日期:1995-05-01 00:00:00
abstract:UNLABELLED:A bat virus with high phylogenetic relatedness to human mumps virus (MuV) was identified recently at the nucleic acid level. We analyzed the functional activities of the hemagglutinin-neuraminidase (HN) and the fusion (F) proteins of the bat virus (batMuV) and compared them to the respective proteins of a hu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03693-14
更新日期:2015-04-01 00:00:00
abstract::Porcine reproductive and respiratory syndrome virus (PRRSV) is the most important infectious disease agent of pigs worldwide, causing reproductive failure in pregnant sows and respiratory problems in nursing and growing pigs. PRRSV infection is characterized by a prolonged viremia of 30 or more days and an extended pe...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.11.5923-5933.2004
更新日期:2004-06-01 00:00:00
abstract::Members of the Paramyxovirinae subfamily rely on the concerted action of two envelope glycoprotein complexes, attachment protein H and the fusion (F) protein oligomer, to achieve membrane fusion for viral entry. Despite advances in X-ray information, the organization of the physiological attachment (H) oligomer in fun...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01222-10
更新日期:2010-12-01 00:00:00
abstract::We investigated the features of the Moloney murine sarcoma virus leader sequence necessary for RNA packaging function by using a deletion analysis approach. We found that sequences that extend beyond those characterized genetically in previous reports are important for optimal packaging efficiency. A fragment covering...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.9.4643-4648.2002
更新日期:2002-05-01 00:00:00
abstract::Rotavirus infection is one of the most common causes of diarrheal illness in humans. In neonatal mice, rhesus rotavirus (RRV) can induce biliary atresia (BA), a disease resulting in inflammatory obstruction of the extrahepatic biliary tract and intrahepatic bile ducts. We previously showed that the amino acid arginine...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00510-17
更新日期:2017-07-12 00:00:00
abstract::Fluorescent retroviral envelope (Env) proteins were developed for direct visualization of viral particles. By fusing the enhanced green fluorescent protein (eGFP) to the N terminus of the amphotropic 4070A envelope protein, extracellular presentation of eGFP was achieved. Viruses incorporated the modified Env protein ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.10.6070-6075.2003
更新日期:2003-05-01 00:00:00