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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1995-8-15
pubmed:abstractText
We developed a procedure for isolation of recombinant vaccinia viruses (re-VV) based solely on plaque formation, without a requirement for specific cell lines, selective medium or special staining. The system consists of two components: (i) a mutant non-plaque-forming VV and (ii) a plasmid vector that, through homologous recombination, can simultaneously introduce a foreign gene and repair mutation in the VV genome. The mutant VV contains a deletion of the vp37 gene, encoding a 37-kDa protein component of the viral outer envelope that is required for efficient viral spread on cell monolayers. The plasmid vector contains a functional vp37, a strong synthetic VV early/late promoter, unique restriction sites for gene insertion, and flanking segments of VV DNA for homologous recombination. Following infection and transfection of cells with the mutant VV and plasmid vector, respectively, re-VV are identified and isolated by their ability to form plaques. To evaluate the system, a re-VV that expresses the gene encoding influenza virus hemagglutinin (HA) was isolated simply by picking visible plaques.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
158
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
157-62
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Selection of recombinant vaccinia viruses on the basis of plaque formation.
pubmed:affiliation
Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
pubmed:publicationType
Journal Article