Cytokine 1998,
PMID: 9878122
Shin, H C; Benbernou, N; Fekkar, H; Esnault, S; Guenounou, M
In the present study, the expression of interleukin 17 (IL-17) by human CD8(+) T lymphocytes and its regulation following PKA activation was determined and compared with that of interferon gamma (IFN-gamma) and IL-10. IL-17 mRNA was highly expressed in human CD8(+) T lymphocytes at least at the same level than in CD4(+) T cells that were isolated from peripheral blood mononuclear cells (PBMC). Expression of IL-17 mRNA in CD8(+) T cell was induced by prior activation of PBMC for 18 h with Ca2+ ionophore and phorbol myristate acetate (PMA). Furthermore, our results clearly showed that CD8(+) T cells are sensitive to elevation of cAMP and PKA activation pathway. Data demonstrated a significant inhibition of IL-17 as well as of IFN-gamma mRNA expression in CD8(+) T cells isolated from activated PBMC cultured in the presence of either dibutyryl cAMP (db-cAMP) or PGE2. In contrast, IL-10 mRNA expression was strongly enhanced in the same experimental conditions. The differential expression of IL-10 and IFN-gamma production in CD8(+) T cells was also observed at the protein level as it was measured by a double immunofluorescence technique and flow cytometry analysis. Taken together, these results provide evidence that human CD8(+) T cells are also the source of massive expression of IL-17, and that PKA plays a prominent role in the switch of CD8(+) T cells to a Th2 like profile and an inhibition of IL-17 expression, thus suggesting that the activation of cAMP signal transduction pathway may have consequences for the relative role of CD8(+) T cells in the immune and inflammatory process.
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Text Mining Data
IL-17 — CD8: "
Taken together, these results provide evidence that human
CD8 ( + ) T cells are also the source of massive expression of IL-17, and that PKA
plays a prominent role in the switch of CD8 ( + ) T cells to a Th2 like profile and an inhibition of
IL-17 expression, thus suggesting that the activation of cAMP signal transduction pathway may have consequences for the relative role of CD8 ( + ) T cells in the immune and inflammatory process
"
IL-17 — PKA: "
Taken together, these results provide evidence that human CD8 ( + ) T cells are also the source of massive expression of IL-17, and that PKA plays a prominent role in the switch of CD8 ( + ) T cells to a Th2 like profile and an inhibition of IL-17 expression, thus suggesting that the activation of cAMP signal transduction pathway may have consequences for the relative role of CD8 ( + ) T cells in the immune and inflammatory process
"
Manually curated Databases
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