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[IL-2/IL-2R pathway in dendritic cell modulates both their cytokine synthesis profiles and their capacity to activate allogeneic CD4+ T lymphocytes]
- Source :
- Pathologie-biologie. 59(3)
- Publication Year :
- 2008
-
Abstract
- The results provide new insights into the role of IL-2/IL-2R pathway in DC. We report that stimulation of human monocyte-derived DC with LPS strongly upregulated CD25 (α chain of the IL-2R) expression. In addition, by using a humanized monoclonal antibody against CD25, we demonstrated that the IL-2 signalling in DC upregulated both IL-12 and γIFN production but decreased IL-10 synthesis. Anti-CD25 treatment reduced the ability of LPS-DC to induce allogeneic CD4(+) T cell proliferation as compared to LPS-matured DC. In addition, LPS-matured DC treated with IL-2 had a higher allostimulatory capacity compared to LPS-DC. We also found that LPS-matured DC produced IL-2. Thus, IL-2 seems to contribute actively to DC activation through an autocrine pathway. Moreover, IL-2 pathway in DC is involved in T helper priming. These findings might be useful for protocols in cellular therapy and a valuable tool to understand graft rejection versus the acquisition of peripheral tolerance.
- Subjects :
- CD4-Positive T-Lymphocytes
Lipopolysaccharides
Interleukin-2 Receptor alpha Subunit
Antibodies, Monoclonal
Granulocyte-Macrophage Colony-Stimulating Factor
Enzyme-Linked Immunosorbent Assay
Dendritic Cells
Flow Cytometry
Lymphocyte Activation
Endocytosis
Monocytes
Immunophenotyping
Interleukin-10
Autocrine Communication
Interferon-gamma
Humans
Interleukin-2
Cells, Cultured
Signal Transduction
Subjects
Details
- Language :
- French
- ISSN :
- 17683114
- Volume :
- 59
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Pathologie-biologie
- Accession number :
- edsair.pmid..........78f60dd84876f71e8feaf3a243f78bbc