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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-7-2
pubmed:abstractText
Neurovirulence is one of the pathological complications associated with vaccinia virus (VV) infection/vaccination. Although the viral N1L protein has been identified as the neurovirulence factor, none of the host N1L-interacting factors have been identified so far. In the present study, we identified N1L-interacting proteins by screening a human brain cDNA expression library with N1L as a bait protein in a yeast two-hybrid analysis. The analysis revealed that N1L interacts with human brain-originated cellular basement membrane-associated chondroitin sulfate proteoglycan (bamacan). The N1L-binding domain of bamacan was mapped to its C-terminal 227 amino acids. The N1L-bamacan interaction was further confirmed in both VV-infected and N1L-transfected mammalian cells. Following the confirmation of the protein interactions by coimmunoprecipitation experiments, confocal microscopic analysis revealed that N1L colocalizes with bamacan both in VV-infected B-SC-1 cells as well as in mice neuronal tissue. Furthermore, a human neural cell line, which expresses bamacan to moderately elevated levels relative to a non-neural cell line, supported enhanced viral growth. Overall, these studies clearly suggest that bamacan interacts with the VV-N1L and such interactions seem to play a positive role in promoting the viral growth and perhaps contribute to the virulence of VV in neural cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1538-2443
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
229-37
pubmed:dateRevised
2011-3-29
pubmed:meshHeading
pubmed-meshheading:19444697-Animals, pubmed-meshheading:19444697-Animals, Suckling, pubmed-meshheading:19444697-Brain, pubmed-meshheading:19444697-COS Cells, pubmed-meshheading:19444697-Cell Cycle Proteins, pubmed-meshheading:19444697-Cell Line, Tumor, pubmed-meshheading:19444697-Cercopithecus aethiops, pubmed-meshheading:19444697-Chondroitin Sulfate Proteoglycans, pubmed-meshheading:19444697-Chromosomal Proteins, Non-Histone, pubmed-meshheading:19444697-Host-Pathogen Interactions, pubmed-meshheading:19444697-Humans, pubmed-meshheading:19444697-Ligands, pubmed-meshheading:19444697-Mice, pubmed-meshheading:19444697-Protein Binding, pubmed-meshheading:19444697-Vaccinia, pubmed-meshheading:19444697-Vaccinia virus, pubmed-meshheading:19444697-Vero Cells, pubmed-meshheading:19444697-Viral Proteins
pubmed:year
2009
pubmed:articleTitle
The proteoglycan bamacan is a host cellular ligand of vaccinia virus neurovirulence factor N1L.
pubmed:affiliation
Division of Hematology, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892, USA. krishna.ketha391534@fda.hhs.gov
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural