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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
9
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pubmed:dateCreated |
1992-6-2
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pubmed:abstractText |
Previously we reported that as AKR.H-2b:Fv-1b mice become older than 9 wk of age they begin to specifically lose the ability to generate anti-AKR/Gross murine leukemia virus (MuLV) CTL responses after immunization and in vitro restimulation with cells expressing AKR/Gross MuLV-encoded Ag. Interestingly, the frequency of virus-specific precursor cytotoxic T lymphocytes (CTL) observed in moderately-aged AKR.H-2b:Fv-1b mice was not substantially decreased from that found in their young responder counterparts. To further investigate the mechanism(s) responsible for the inability of moderately-aged AKR.H-2b:Fv-1b mice to mount AKR/Gross MuLV-specific CTL responses, adoptive transfer experiments were performed in the present study. Transferring splenocytes from moderately-aged AKR.H-2b:Fv-1b donors into young AKR.H-2b:Fv-1b recipients resulted in inhibition of AKR/Gross MuLV-specific CTL responsiveness. Anti-Thy-1.1 plus complement depletion of T cells from the donor cell population before adoptive transfer resulted in a near complete restoration of AKR/Gross MuLV responsiveness of young recipient AKR.H-2b:Fv-1b mice suggesting that the inhibition observed in moderately aged mice was mediated by T lymphocytes. Additional experiments using depletion of T subsets before cell transfer demonstrated that inhibition of AKR/Gross MuLV-specific CTL responsiveness was mediated by a CD4-CD8+ T lymphocyte.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
May
|
pubmed:issn |
0022-1767
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
1
|
pubmed:volume |
148
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
2961-7
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:1349325-AKR murine leukemia virus,
pubmed-meshheading:1349325-Aging,
pubmed-meshheading:1349325-Animals,
pubmed-meshheading:1349325-CD4-Positive T-Lymphocytes,
pubmed-meshheading:1349325-Complement System Proteins,
pubmed-meshheading:1349325-Dose-Response Relationship, Immunologic,
pubmed-meshheading:1349325-Female,
pubmed-meshheading:1349325-Isoantibodies,
pubmed-meshheading:1349325-Leukemia, Experimental,
pubmed-meshheading:1349325-Lymphocyte Culture Test, Mixed,
pubmed-meshheading:1349325-Lymphocyte Depletion,
pubmed-meshheading:1349325-Male,
pubmed-meshheading:1349325-Mice,
pubmed-meshheading:1349325-Mice, Inbred AKR,
pubmed-meshheading:1349325-T-Lymphocytes, Cytotoxic,
pubmed-meshheading:1349325-Transfection
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pubmed:year |
1992
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pubmed:articleTitle |
CD4-CD8+ T lymphocytes mediate AKR/gross murine leukemia virus nonresponsiveness in moderately aged AKR.H-2b:Fv-1b mice.
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pubmed:affiliation |
Department of Microbiology, Dartmouth Medical School, Hanover, NH 03756.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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