Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1994-2-10
|
pubmed:abstractText |
Compared with other T cell lines, C8166 lymphocytes are particularly susceptible to human immunodeficiency virus (HIV) infection and the outcome is invariably cell death. The results reported in this study demonstrate that the virus-induced cytolysis is strongly dependent on the initial cell density of C8166 cultures. Cultures diluted to 50 to 500 cells/ml almost completely maintained their cell duplication rate and released infectious virus into the medium. HIV infection of diluted C8166 cells is a simple and easily reproducible procedure for obtaining persistently infected cultures. These cultures contained genomic and extragenomic HIV DNA, the latter being assayed by PCR for two-long terminal repeat circular forms. The status of persistent infection disappeared within 2 months. The recovery is due to the replacement of CD4 down-regulated infected cells by overgrowing uninfected cell variants, which are transcriptionally inactive for CD4. The mechanisms underlying the emergence of these variants in persistently infected cultures are considered.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Dec
|
pubmed:issn |
0022-1317
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
74 ( Pt 12)
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
2595-601
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:8277266-Antigens, CD4,
pubmed-meshheading:8277266-Cell Division,
pubmed-meshheading:8277266-Cell Line,
pubmed-meshheading:8277266-Cell Survival,
pubmed-meshheading:8277266-DNA, Viral,
pubmed-meshheading:8277266-Down-Regulation,
pubmed-meshheading:8277266-HIV-1,
pubmed-meshheading:8277266-Humans,
pubmed-meshheading:8277266-T-Lymphocytes,
pubmed-meshheading:8277266-Virus Integration
|
pubmed:year |
1993
|
pubmed:articleTitle |
Virus-free survival and down-regulation of CD4 in C8166 cells infected with human immunodeficiency virus type 1 at low density.
|
pubmed:affiliation |
Centre of Virology, S. Camillo Hospital, USL RM 10, Rome, Italy.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|