Abstract:
:The study of replication of viruses that require high bio-secure facilities can be accomplished with less stringent containment using non-infectious 'replicon' systems. The FMDV replicon system (pT7rep) reported by Mclnerney et al. (2000) was modified by the replacement of sequences encoding chloramphenicol acetyl-transferase (CAT) with those encoding a functional L proteinase (L(pro)) linked to a bi-functional fluorescent/antibiotic resistance fusion protein (green fluorescent protein/puromycin resistance, [GFP-PAC]). Cells were transfected with replicon-derived transcript RNA and GFP fluorescence quantified. Replication of transcript RNAs was readily detected by fluorescence, whilst the signal from replication-incompetent forms of the genome was >2-fold lower. Surprisingly, a form of the replicon lacking the L(pro) showed a significantly stronger fluorescence signal, but appeared with slightly delayed kinetics. Replication can, therefore, be quantified simply by live-cell imaging and image analyses, providing a rapid and facile alternative to RT-qPCR or CAT assays.
journal_name
J Virol Methodsjournal_title
Journal of virological methodsauthors
Tulloch F,Pathania U,Luke GA,Nicholson J,Stonehouse NJ,Rowlands DJ,Jackson T,Tuthill T,Haas J,Lamond AI,Ryan MDdoi
10.1016/j.jviromet.2014.08.020subject
Has Abstractpub_date
2014-12-01 00:00:00pages
35-40eissn
0166-0934issn
1879-0984pii
S0166-0934(14)00337-1journal_volume
209pub_type
杂志文章abstract::Type-specific 30'mer-36'mer oligonucleotide probes complementary to mRNA transcribed from the E6 and E7 open reading frames of HPV 6b/11, 16, 18 and 33 were designed using the published nucleotide sequences. As oligonucleotides are easily and relatively cheaply synthesized in large amounts and are free of vector DNA, ...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(93)90018-m
更新日期:1993-03-01 00:00:00
abstract::Sensitive, precise and rapid detection tests are needed in the quality control of rabies vaccine for rabies virus nucleoprotein. Previous studies for quantitation of rabies virus nucleoprotein focused on enzyme-linked immunosorbent assay (ELISA). A novel immunoassay for rapid determination of rabies virus nucleoprotei...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2014.06.002
更新日期:2014-09-01 00:00:00
abstract::A fluorogenic reverse transcriptase-polymerase chain reaction (RT-PCR) system was developed for use as a rapid diagnostic test for determining dengue viremia. The dengue virus 3'-noncoding sequence was utilized to formulate serotype-specific RT-PCR assays for quantitative identification of the four different dengue vi...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(01)00280-4
更新日期:2001-06-01 00:00:00
abstract::A simple, sensitive and specific method using the polymerase chain reaction (PCR) for amplification of human immunodeficiency virus type 1 (HIV-1) is described. The method involves minimal manipulations. Peripheral blood mononuclear cells (PBMC) were prepared by a rapid Ficoll-Paque gradient method. Lymphocytes were l...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(91)90058-8
更新日期:1991-05-01 00:00:00
abstract::Commercially marketed kits are now available for rapid viral assay of clinical specimens. This study was conducted to determine the suitability of these kits for use in environmental testing. Eight rotavirus kits and one enteric adenovirus kit were screened for sensitivity using simian rotavirus SA11, human rotavirus ...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(93)90098-c
更新日期:1993-12-15 00:00:00
abstract::Some new commercial methods for the extraction of viral RNA have been introduced recently. In addition to the study published previously (Verhofstede, C., Reniers, S., Van Wanzeele. F., Plum J., 1996. AIDS 8, 1421-1427), seven different methods (four newly developed and three reference methods) for extraction of HIV-1...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(98)00115-3
更新日期:1998-12-01 00:00:00
abstract::Nine commercial EIAs for measles-specific IgG were compared with haemagglutination inhibition (HI) and plaque reduction neutralization (PRN). A total of 174 sera selected, to give approximately half of the sera without measles antibody by HI, were tested by all EIAs and HI. However, there was sufficient volume of only...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(97)02210-6
更新日期:1997-06-01 00:00:00
abstract::Hepatitis E virus (HEV) is the causative agent of hepatitis E, a food- and water-borne disease. In developed countries, consumption of meats from pigs, wild boars and deer is a major source of infection. Although HEV and HEV-related viruses have been detected in many animal species, their zoonotic potential and preval...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2016.07.030
更新日期:2016-12-01 00:00:00
abstract::Since protection against African horsesickness (AHS) is serotype-specific, rapid serotyping of AHSV is crucial to identify the correct vaccine serotype for efficient control of the spread of AHS outbreaks, especially when they occur in non-endemic regions. This paper describes the first one-day serotyping procedure th...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2004.08.002
更新日期:2004-12-01 00:00:00
abstract::Recombinant Nef-protein of HIV-1 Bru derived from Escherichia coli revealed heparin-binding activity. This property was used to purify the Nef-protein by a one-step procedure, yielding about 90% homogenous Nef-protein as evaluated by silver staining. The Nef-protein was soluble without denaturing agents. Native foldin...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(96)02049-6
更新日期:1996-06-01 00:00:00
abstract::An inducible in vitro cell culture system was developed to assay HCV replication by direct biochemical means. A transcription plasmid containing a T7 promoter at the 5' end, full-length cDNA of the HCV genome, a ribozyme sequence from the antigenomic strand of hepatitis delta virus and a T7 terminator was prepared. To...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(01)00278-6
更新日期:2001-05-01 00:00:00
abstract::A reverse-transcription competitive PCR (RT-cPCR) combined with chemiluminescence hybridization was designed for the detection and quantitative determination of serum hepatitis C virus (HCV) RNA. The concentration of HCV RNA was calculated based on an external standard curve that was generated by coamplification of in...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(01)00403-7
更新日期:2002-05-01 00:00:00
abstract::Antigenic differences among cowpea severe mosaic virus (CPSMV) isolates were clearly reflected in signature analysis employing a panel of seven well-characterized, monoclonal antibodies. Separate binding curves were generated by reacting serial dilutions of extracts from infected plant tissue containing each antigen s...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(93)90039-t
更新日期:1993-05-01 00:00:00
abstract::A method for assessing the number of infectious particles in preparations of HIV has been developed. Virus was mixed with cells to allow binding of virus. The cells were then cast in an agar gel to block any further transfer of virus between the cells. After 4 days of incubation the cells initially infected with HIV e...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(90)90133-z
更新日期:1990-02-01 00:00:00
abstract::Six cell lines routinely used in laboratories were tested for permissiveness to the infection with the newly identified human coronavirus NL63. Two monkey epithelial cell lines, LLC-MK2 and Vero-B4, showed a cytopathic effect (CPE) and clear viral replication, whereas no CPE or replication was observed in human lung f...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2006.07.023
更新日期:2006-12-01 00:00:00
abstract::An efficient method for isolation of virus mutants with antigenically altered proteins is described. The method is based on the separation of viruses with wild-type and antigenically altered proteins by affinity chromatography using monoclonal antibodies (MAbs). A nonessential glycoprotein E (gE) of Aujeszky's disease...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(98)00137-2
更新日期:1999-01-01 00:00:00
abstract::Rapid detection of CMV-DNA in urine specimens by dot-blot hybridization was compared to conventional virus isolation and to virus identification using solid-phase immunoelectron microscopy (SPIEM). To detect viral DNA, 32P-labeled EcoR1 J fragment of CMV-DNA was used as a probe in the hybridization assay. In addition,...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(87)90028-0
更新日期:1987-05-01 00:00:00
abstract::We describe an in-situ RT-PCR method for the amplification of rhinovirus (RV) in fixed, paraffin-embedded HeLa cells employed as a model for human respiratory epithelium. HeLa cells were infected in-vitro with inocula of rhinovirus-16 ranging from 10(2) to 10(6) 50% tissue culture infective doses (TCID50), incubated f...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(97)00095-5
更新日期:1997-09-01 00:00:00
abstract::Heteroduplex mobility (HMA) and tracking assays (HTA) are used to assess genetic relationships between DNA molecules. While distinguishing relationships between clonal or nearly clonal molecules is relatively straightforward, inferring population structures is more complex. To address this issue, HIV-1 quasispecies wi...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2013.08.012
更新日期:2013-12-01 00:00:00
abstract::Human cytomegalovirus (HCMV) is the most frequent cause of congenital infection. Diagnosis of this infection is important because 5-17% of asymptomatic infected babies will develop late sequelae and should be followed closely. Most of these children will remain undetected, since screening of all newborns by viral cult...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2005.02.018
更新日期:2005-09-01 00:00:00
abstract::CD4 T-cell count is a priority for staging HIV disease and guiding clinical management as part of HIV care. Conventional CD4 T-cell enumeration methods based on flow cytometry are expensive, require well-trained personnel, and are challenging to use in rural, resource-scarce areas. A simple CD4 T-cell count test that ...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2019.05.012
更新日期:2019-09-01 00:00:00
abstract::Rice tungro disease (RTD) is a recurring disease affecting rice farming especially in the South and Southeast Asia. The disease is commonly diagnosed by visual observation of the symptoms on diseased plants in paddy fields and by polymerase chain reaction (PCR). However, visual observation is unreliable and PCR can be...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2016.12.001
更新日期:2017-02-01 00:00:00
abstract::Three tests were compared to diagnose herpes virus infection: electron microscopy (EM), viral culture (VC) and cytodiagnosis (Tzanck smear). The study comprised 67 patients with skin or mucous membrane lesions suggestive of herpes simplex virus (HSV) infection. The sensitivity of EM increased 25% after virus concentra...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(91)90106-a
更新日期:1991-10-01 00:00:00
abstract::One of the major factors determining the incidence of Barley yellow dwarf virus (BYDV) on autumn-sown cereals is the viruliferous state of immigrant winged aphids. This variable is assessed routinely using the enzyme-linked immunosorbant assay (ELISA). However, the threshold for virus detection by ELISA can lead to fa...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/s0166-0934(03)00097-1
更新日期:2003-06-09 00:00:00
abstract::Ebola virus is a filovirus that causes hemorrhagic fever in humans and is associated with case fatality rates of up to 90%. The lack of therapeutic interventions in combination with the threat of weaponizing this organism has enhanced research investigations. The expression of key viral proteins and the production of ...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2007.12.004
更新日期:2008-03-01 00:00:00
abstract::Numerous strategies have been employed in an attempt to improve the immunogenicity and efficacy of nucleic acid vaccines. In the present study, the immunogenicity in the induction of humoral and cellular immune responses to HIV-1 DNA vaccine expressing a chimeric gene of gag and gp120 and the adjuvant effect of IFN-al...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2007.07.016
更新日期:2007-12-01 00:00:00
abstract::Noroviruses are the leading cause of nonbacterial gastroenteritis outbreaks in the United States, some of which are caused by the ingestion of contaminated water. Detection and genotypic characterization of noroviruses is commonly performed by reverse transcription-polymerase chain reaction (RT-PCR) followed by sequen...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2008.03.010
更新日期:2009-03-01 00:00:00
abstract::A reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed for the rapid detection of equine coronavirus (ECoV). This assay was conducted at 60 °C for 40 min. Specificity of the RT-LAMP assay was confirmed using several equine intestinal and respiratory pathogens in addition to ECoV. ...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/j.jviromet.2015.02.001
更新日期:2015-04-01 00:00:00
abstract::The Directigen Flu-A is an enzyme immunoassay for detecting in 15 min the influenza A nucleoproteinic antigen directly from specimens after passive adsorption on a cellulose membrane. The test was assessed using 160 frozen (-20 degrees C) specimens collected during the 1988-1989 A/H1N1 influenza epidemic and the 1989-...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(92)90033-a
更新日期:1992-06-01 00:00:00
abstract::Restriction enzyme analysis of DNA of a number of Pseudorabies virus (PRV) single plaque isolates revealed in several cases the existence of a unique EcoRI cleavage site, which has not been observed in PRV DNA before. This EcoRI site was mapped to the right end of the unique long region of the PRV genome, in BamHI-fra...
journal_title:Journal of virological methods
pub_type: 杂志文章
doi:10.1016/0166-0934(94)90019-1
更新日期:1994-01-01 00:00:00