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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
9
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pubmed:dateCreated |
1988-6-3
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pubmed:abstractText |
Mice were infected with Listeria monocytogenes and Lyt-2+ T cell clones capable of lysing Ag-primed bone marrow macrophages were established. In accordance with earlier findings obtained at the population level, some T cell clones were identified which lysed bone marrow macrophages of different MHC type provided the relevant Ag was present. This unusual target cell recognition was further analyzed using a T3+, L3T4-, Lyt-2+, F23+, KJ16+ T cell clone, designated L-28. Target cell lysis by this clone was Ag specific, apparently non-MHC restricted. In contrast, YAC cells and P815 cells were not lysed by clone L-28. However, lysis of irrelevant targets could be induced by anti-T3, F23, or KJ16 mAb. Furthermore, Ag-specific lysis was blocked by anti-Lyt-2 mAb and by F(ab)2 fragments of F23 mAb. In addition to its cytolytic activity, clone L-28 produced IFN-gamma after co-stimulation with accessory cells, Ag, and rIL-2 and conferred significant protection on recipient mice when given together with rIL-2. These data suggest that non-MHC-restricted Lyt-2+ killer cells generated during listeriosis are cytolytic T lymphocytes that interact with their target Ag via the T cell receptor/T3 complex and the Lyt-2 molecule and, furthermore, that these cells play a role in anti-listerial resistance. The possible relevance of IFN-gamma secretion and target cell lysis for antibacterial protection is discussed.
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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
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pubmed:issn |
0022-1767
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
1
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pubmed:volume |
140
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3173-9
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:3129513-Animals,
pubmed-meshheading:3129513-Antibodies, Monoclonal,
pubmed-meshheading:3129513-Antigens, Ly,
pubmed-meshheading:3129513-Clone Cells,
pubmed-meshheading:3129513-Cytotoxicity, Immunologic,
pubmed-meshheading:3129513-Interferon-gamma,
pubmed-meshheading:3129513-Killer Cells, Natural,
pubmed-meshheading:3129513-Listeria monocytogenes,
pubmed-meshheading:3129513-Major Histocompatibility Complex,
pubmed-meshheading:3129513-Mice,
pubmed-meshheading:3129513-Receptors, Antigen, T-Cell,
pubmed-meshheading:3129513-T-Lymphocytes,
pubmed-meshheading:3129513-T-Lymphocytes, Cytotoxic
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pubmed:year |
1988
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pubmed:articleTitle |
Cloned Listeria monocytogenes specific non-MHC-restricted Lyt-2+ T cells with cytolytic and protective activity.
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pubmed:affiliation |
Max-Planck-Institut für Immunbiologie, Freiburg, Federal Republic of Germany.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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