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Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens
Potent cytotoxic T lymphocyte (CTL) activity can be derived from cultures of thymocyte responders and minor H different spleen cell stimulators. As is the case of the spleen cell response previously reported, this cytotoxic activity requires in vivo priming. We performed several experiments designed...
Formato: | Texto |
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Lenguaje: | English |
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The Rockefeller University Press
1984
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2187221/ https://www.ncbi.nlm.nih.gov/pubmed/6607314 |
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collection | PubMed |
description | Potent cytotoxic T lymphocyte (CTL) activity can be derived from cultures of thymocyte responders and minor H different spleen cell stimulators. As is the case of the spleen cell response previously reported, this cytotoxic activity requires in vivo priming. We performed several experiments designed to determine whether the in vivo priming effect is due to the in situ priming of the thymocyte CTL precursors, to contamination of thymus cell preparations with cells of neighboring lymph nodes, or to the appearance in the thymus of antigen- reactive peripheral T cells. We show by depletion of peripheral cells with antilymphocyte serum and part body irradiation that recent thymic immigrants derived from the bone marrow contribute to the primed thymic response. Thymic CTL were primed in animals in which peripheral T cell responses were completely eliminated by repeated treatment in vivo with monoclonal anti-Thy-1 reagents. Primed, antigen-activated lymph node cells were also demonstrated to contribute to the thymus-derived CTL response. Thus, the minor H-specific thymic CTL response is due both to in situ priming and the immigration of activated peripheral T cells. We discuss the possible significance for models of T cell differentiation of the presence within the thymus of antigen and antigen-reactive mature T cells. |
format | Text |
id | pubmed-2187221 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1984 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21872212008-04-17 Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens J Exp Med Articles Potent cytotoxic T lymphocyte (CTL) activity can be derived from cultures of thymocyte responders and minor H different spleen cell stimulators. As is the case of the spleen cell response previously reported, this cytotoxic activity requires in vivo priming. We performed several experiments designed to determine whether the in vivo priming effect is due to the in situ priming of the thymocyte CTL precursors, to contamination of thymus cell preparations with cells of neighboring lymph nodes, or to the appearance in the thymus of antigen- reactive peripheral T cells. We show by depletion of peripheral cells with antilymphocyte serum and part body irradiation that recent thymic immigrants derived from the bone marrow contribute to the primed thymic response. Thymic CTL were primed in animals in which peripheral T cell responses were completely eliminated by repeated treatment in vivo with monoclonal anti-Thy-1 reagents. Primed, antigen-activated lymph node cells were also demonstrated to contribute to the thymus-derived CTL response. Thus, the minor H-specific thymic CTL response is due both to in situ priming and the immigration of activated peripheral T cells. We discuss the possible significance for models of T cell differentiation of the presence within the thymus of antigen and antigen-reactive mature T cells. The Rockefeller University Press 1984-02-01 /pmc/articles/PMC2187221/ /pubmed/6607314 Text en This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Articles Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens |
title | Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens |
title_full | Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens |
title_fullStr | Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens |
title_full_unstemmed | Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens |
title_short | Thymic cytotoxic T lymphocytes are primed in vivo to minor histocompatibility antigens |
title_sort | thymic cytotoxic t lymphocytes are primed in vivo to minor histocompatibility antigens |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2187221/ https://www.ncbi.nlm.nih.gov/pubmed/6607314 |