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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1993-12-27
pubmed:abstractText
The process of cell death caused by influenza virus infection in cultured MDCK and HeLa cells was analysed. This infection gave rise to nuclear fragmentation and chromatin condensation accompanied by chromosomal DNA fragmentation into oligonucleosomes. Chromosomal DNA fragmentation progressed concomitantly with cell lysis of MDCK cells and HeLa cells, producing high and low yields of virus particles, respectively, indicating that the extent of cell lysis was not proportional to the virus production. The endonuclease inhibitor zinc blocked DNA fragmentation in MDCK cells. Cycloheximide inhibited DNA fragmentation as well as cell lysis. Inhibition occurred when the drug was added to the medium within 2 h after infection but not efficiently at 4 h or later. Infection induced the Fas Ag gene, which encodes a possible apoptosis-mediating molecule, in the early infectious stage followed by the expression of Fas Ag on the cell surface. These results suggested that influenza virus infection causes apoptotic death of cultured cells, and their fate might be determined at an early stage of the infection by induction of an apoptotic gene.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0022-1317
pubmed:author
pubmed:issnType
Print
pubmed:volume
74 ( Pt 11)
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2347-55
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Induction of programmed cell death (apoptosis) by influenza virus infection in tissue culture cells.
pubmed:affiliation
Department of Biochemistry, School of Medicine, Kanazawa University, Ishikawa, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't