Abstract:
:The alternating host cycle and persistent vector infection may constrain the evolution of arboviruses. To test this hypothesis, eastern equine encephalitis virus was passaged in BHK or mosquito cells, as well as in alternating (both) host cell passages. High and low multiplicities were used to examine the effect of defective interfering particles. Clonal BHK and persistent mosquito cell infections were also evaluated. Fitness was measured with one-step growth curves and competition assays, and mutations were evaluated by nucleotide sequencing and RNA fingerprinting. All passages and assays were done at 32 degrees C to eliminate temperature as a selection factor. Viruses passaged in either cell type alone exhibited fitness declines in the bypassed cells, while high-multiplicity and clonal passages caused fitness declines in both types of cells. Bypassed cell fitness losses were mosquito and vertebrate specific and were not restricted to individual cell lines. Fitness increases occurred in the cell line used for single-host-adaptation passages and in both cells for alternately passaged viruses. Surprisingly, single-host-cell passage increased fitness in that cell type no more than alternating passages. However, single-host-cell adaptation resulted in more mutations than alternating cell passages. Mosquito cell adaptation invariably resulted in replacement of the stop codon in nsP3 with arginine or cysteine. In one case, BHK cell adaptation resulted in a 238-nucleotide deletion in the 3' untranslated region. Many nonsynonymous substitutions were shared among more than one BHK or mosquito cell passage series, suggesting positive Darwinian selection. Our results suggest that alternating host transmission cycles constrain the evolutionary rates of arboviruses but not their fitness for either host alone.
journal_name
J Viroljournal_title
Journal of virologyauthors
Weaver SC,Brault AC,Kang W,Holland JJdoi
10.1128/JVI.73.5.4316-4326.1999subject
Has Abstractpub_date
1999-05-01 00:00:00pages
4316-26issue
5eissn
0022-538Xissn
1098-5514journal_volume
73pub_type
杂志文章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::Murine gammaherpesvirus 68 (MHV-68) glycoprotein B (gB) was identified in purified virions by immunoblotting, immunoprecipitation, and immunoelectron microscopy. It was synthesized as a 120-kDa precursor in infected cells and cleaved into 65-kDa and 55-kDa disulfide-linked subunits close to the time of virion release....
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.23.13370-13375.2004
更新日期:2004-12-01 00:00:00
abstract::Infection of cells with herpes simplex virus type 1 (HSV-1) results in a rapid alteration of phosphorylation on the large subunit of cellular RNA polymerase II (RNAP II), most likely on its C-terminal domain (S. A. Rice, M. C. Long, V. Lam, C. A. Spencer, J. Virol. 68:988-1001, 1994). This phosphorylation modification...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.9.5550-5559.1995
更新日期:1995-09-01 00:00:00
abstract::Lymphomas induced by pure HIX murine leukemia virus in two mouse strains contained large amounts of virus with amphotropic properties. Analysis of tumor derived virus purified by limiting dilution techniques indicated that its interference and neutralization spectra were essentially identical to parental HIX virus and...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.26.2.532-535.1978
更新日期:1978-05-01 00:00:00
abstract::trans activation of the human immunodeficiency virus type 1 long terminal repeat requires that the viral trans activator Tat interact with the trans-acting responsive region (TAR) RNA. Although the N-terminal 47 amino acids represent an independent activation domain that functions via heterologous nucleic acid-binding...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.6.3441-3445.1993
更新日期:1993-06-01 00:00:00
abstract::Avian influenza virus (AIV) surveillance in Antarctica during 2013 revealed the prevalence of evolutionarily distinct influenza viruses of the H11N2 subtype in Adélie penguins. Here we present results from the continued surveillance of AIV on the Antarctic Peninsula during 2014 and 2015. In addition to the continued d...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01404-16
更新日期:2016-10-14 00:00:00
abstract::RNA viruses of filamentous fungi fall into two broad categories, those that contain double-stranded RNA (dsRNA) genomes in rigid particles and those that are more closely related to positive-sense, single-stranded RNA viruses with dsRNA replicative intermediates found within lipid vesicles. Effective infectivity syste...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.2.892-898.2004
更新日期:2004-01-01 00:00:00
abstract::Klebsiella pneumoniae is a member of the family Enterobacteriaceae, opportunistic pathogens that are among the eight most prevalent infectious agents in hospitals. The emergence of multidrug-resistant strains of K. pneumoniae has became a public health problem globally. To develop an effective antimicrobial agent, we ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02435-12
更新日期:2012-12-01 00:00:00
abstract::Macrophage adherence, an important regulatory signal, has the potential to affect human immunodeficiency virus (HIV) production either directly or by priming monocytes to respond to other activating signals. We have investigated the role of adherence as an activator of HIV-1 transcription and release. The effects of a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.6.3569-3575.1993
更新日期:1993-06-01 00:00:00
abstract::The gastrointestinal tract is constantly exposed to a variety of potentially invasive bacteria and viruses. The first line of defense of the host against these pathogens is the intestinal mucosal surface, which consists of epithelial cells, intraepithelial lymphocytes (IELs), mucus, and secretory immunoglobulins. Litt...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.8.3507-3512.1989
更新日期:1989-08-01 00:00:00
abstract::Viruses with spindle-shaped virions are abundant in diverse environments. Over the years, such viruses have been isolated from a wide range of archaeal hosts. Evolutionary relationships between them remained enigmatic, however. Here, using structural proteins as markers, we define familial ties among these "dark horse...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02941-13
更新日期:2014-02-01 00:00:00
abstract::Cells of Mus minutoides, an African pygmy mouse of the subgenus Nannomys, are susceptible to ecotropic Moloney and Friend mouse leukemia viruses (MLVs) but not to AKV-type MLVs. Transfected MA139 ferret cells expressing the mCAT-1 cell surface receptor, with the minCAT-1 substitutions K222Q and V233L, did not restrict...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00202-08
更新日期:2008-07-01 00:00:00
abstract::Closed circular unintegrated DNA of the SEATO strain of gibbon ape leukemia virus (GaLV-S) was isolated from canine thymus fibroblasts after cocultivation with chronically infected bat lung fibroblasts. Restriction endonuclease HindIII cleaves GaLV-S DNA once, thus allowing isolation and cloning of HindIII-digested un...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.44.1.269-275.1982
更新日期:1982-10-01 00:00:00
abstract::By marker rescue of bacteriophage SP02 sus mutants with purified bacteriophage SP02 DNA fragments, 11 of the 17 known bacteriophage SP02 sus loci were assigned to discrete DNA fragments. The left-most genetic locus, susA, was found to reside near one bacteriophage SP02 terminus (EcoRI-C1 fragment), whereas the right-m...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.42.1.131-134.1982
更新日期:1982-04-01 00:00:00
abstract::Drug resistance remains a major concern for human immunodeficiency virus (HIV) treatment. To date, very few resistance mutations have emerged in first-line combination therapy that includes the integrase strand transfer inhibitor (INSTI) dolutegravir (DTG). In vitro, DTG selects for several primary mutations that indu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01189-18
更新日期:2019-01-04 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::A significant difference in the recombination rates between human immunodeficiency virus type 1 (HIV-1) and the gammaretroviruses was previously reported, with the former being 10 to 100 times more recombinogenic. It is possible that preferential copackaging of homodimers in the case of gammaretroviruses, like murine ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00273-06
更新日期:2006-07-01 00:00:00
abstract::The host cell-specific factor 1 gene (hcf-1) of the baculovirus Autographa californica nuclear polyhedrosis virus (AcMNPV) is required for the efficient replication and/or stability of reporter plasmids carrying an AcMNPV-derived origin of DNA replication in a cell-specific manner; hcf-1 is required for reporter plasm...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.8.5123-5130.1996
更新日期:1996-08-01 00:00:00
abstract::Cylindrical projections surrounding the fivefold-symmetry axes in minute virus of mice (MVM) harbor central pores that penetrate through the virion shell. In newly released DNA-containing particles, these pores contain residues 28 to 38 belonging to a single copy of VP2, disposed so that its extreme N-terminal domain ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.80.1.161-171.2006
更新日期:2006-01-01 00:00:00
abstract::Nef is a regulatory gene product of human immunodeficiency virus type 1 (HIV-1) and other primate lentiviruses which enhances virion infectivity by an unknown mechanism. We report here that Nef is detectable at moderate levels in preparations of HIV-1 virions which lack active viral protease (PR). Significantly smalle...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.2.1013-1018.1997
更新日期:1997-02-01 00:00:00
abstract:UNLABELLED:The first discovered and sequenced hepatitis C virus (HCV) genome and the first in vivo infectious HCV clones originated from the HCV prototype strains HCV-1 and H77, respectively, both widely used in research of this important human pathogen. In the present study, we developed efficient infectious cell cult...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02877-14
更新日期:2015-01-01 00:00:00
abstract::Noroviruses (NoVs) are a leading cause of gastroenteritis worldwide, yet host factors that restrict NoV replication are not well understood. Here, we use a CRISPR activation genome-wide screening to identify host genes that can inhibit murine norovirus (MNoV) replication in human cells. Our screens identified with hig...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01324-18
更新日期:2018-12-10 00:00:00
abstract::Human metapneumovirus (hMPV) is a leading cause of viral lower respiratory tract infection in children. The sole target of neutralizing antibodies targeting hMPV is the fusion (F) protein, a class I viral fusion protein mediating virus-cell membrane fusion. There have been several monoclonal antibodies (mAbs) isolated...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00342-19
更新日期:2019-09-12 00:00:00
abstract::Several aspects of the terminal stages of T4 head maturation were investigated using ts and am mutants blocked at single steps of the assembly pathway. We had previously found that cells infected with mutants of gene 13, e.g., tsN38 and amE609, accumulated both stable (10 to 20%)- and fragile (80%)-filled head precurs...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.17.2.550-567.1976
更新日期:1976-02-01 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::Mycophenolic acid (MPA), an inhibitor of IMP dehydrogenase, inhibits reovirus replication and viral RNA and protein production. In mouse L929 cells, antiviral effects were greatest at 30 microg of MPA/ml. At this dosage, MPA inhibited replication of reovirus strain T3D more than 1,000-fold and inhibited replication of...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.12.6171-6179.2004
更新日期:2004-06-01 00:00:00
abstract::Reoviruses isolated from persistently infected cultures (PI viruses) can grow in the presence of ammonium chloride, a weak base that blocks acid-dependent proteolysis of viral outer-capsid proteins during viral entry into cells. We used reassortant viruses isolated from crosses of wild-type (wt) reovirus strain, type ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.2.1362-1369.1997
更新日期:1997-02-01 00:00:00
abstract::We have analyzed three cases of hepatitis C virus (HCV)-infected recipients who received blood from HCV-infected donors. Two recipients were exposed to two different HCV RNA-positive donors, and one was exposed to a single donor. All parental genomes from the actual infecting units of blood and the recipients were def...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.5.2059-2066.2001
更新日期:2001-03-01 00:00:00
abstract::The L1 and L2 capsid genes of human papillomavirus type 31 (HPV-31) are expressed upon keratinocyte differentiation from a promoter located in the E7 open reading frame (ORF) of the early region. Late transcripts must therefore pass through and ignore the early polyadenylation sequences to use the downstream late AAUA...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.75.17.8147-8157.2001
更新日期:2001-09-01 00:00:00
abstract::Rabies, caused by rabies virus (RABV), is a fatal encephalitis in humans and other mammals, which continues to present a public health threat in most parts of the world. Our previous study demonstrated that Toll-like receptor 7 (TLR7) is essential in the induction of anti-RABV antibodies via the facilitation of germin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00111-20
更新日期:2020-04-16 00:00:00