Selective expression of IL-7 receptor on memory T cells identifies early CD40L-dependent generation of distinct CD8+ memory T cell subsets
Autor: | Kristen M. Kerksiek, Matthias Schiemann, Dirk H. Busch, Hermann Wagner, Verena Busch, Katharina M. Huster, Kathrin Linkemann |
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Jazyk: | angličtina |
Rok vydání: | 2004 |
Předmět: |
Cytotoxicity
Immunologic T cell CD40 Ligand Priming (immunology) Mice Transgenic chemical and pharmacologic phenomena CD8-Positive T-Lymphocytes Biology Immunophenotyping Interferon-gamma Mice T-Lymphocyte Subsets Memory cell medicine Animals Listeriosis IL-2 receptor Interleukin-7 receptor Lung Mice Inbred BALB C Receptors Interleukin-7 Multidisciplinary Staining and Labeling Histocompatibility Antigens Class II Biological Sciences Acquired immune system Cell biology Mice Inbred C57BL medicine.anatomical_structure Liver Immunology Lymph Nodes Immunologic Memory Memory T cell Biomarkers Spleen CD8 |
Zdroj: | Proc. Natl. Acad. Sci. U.S.A. 101, 5610-5615 (2004) |
Popis: | Several recent studies have demonstrated that T-helper cell-dependent events during the initial priming period are required for the generation of CD8 + T cell-mediated protective immunity. The underlying mechanisms of this phenomenon have not yet been determined, mostly because of difficulties in studying memory T cells or their precursor populations at early stages during immune responses. We identified IL-7 receptor (CD127) surface expression as a marker for long-living memory T cells, most importantly allowing the distinction between memory and effector T cells early after in vivo priming. The combination of surface staining for CD127 and CD62L further separates between two functionally distinct memory cell subsets, which are similar (if not identical) to cell subsets recently described as central memory T cells (CD127 high and CD62L high ) and peripheral effector memory T cells (CD127 high and CD62L low ). Using this new tool of memory T cell analysis, we demonstrate that CD8 + T cell priming in the absence of T cell help or CD40L specifically alters the generation of the effector memory T cell subset, which appears to be crucial for immediate memory responses and long-term maintenance of effective protective immunity. Our data reveal a unique strategy to obtain information about the quality of long-term protective immunity early during an immune response, a finding that may be applied in a variety of clinical settings, including the rapid monitoring of vaccination success. |
Databáze: | OpenAIRE |
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