Contrasting Impacts of Immunosuppressive Agents (Rapamycin, FK506, Cyclosporin A, and Dexamethasone) on Bidirectional Dendritic Cell-T Cell Interaction During Antigen Presentation
- 1 October 2002
- journal article
- research article
- Published by The American Association of Immunologists in The Journal of Immunology
- Vol. 169 (7), 3555-3564
- https://doi.org/10.4049/jimmunol.169.7.3555
Abstract
Rapamycin (RAP), tacrolimus (FK506), cyclosporin A, and glucocorticoids represent modern and classic immunosuppressive agents being used clinically. Although these agents have distinct molecular mechanisms of action and exhibit different immunoregulatory profiles, their direct influences on Ag presentation processes remain relatively unknown. Here we report quantitative and qualitative differences among the above four immunosuppressants in their impact on Ag-specific, bidirectional interaction between dendritic cells (DC) and CD4+ T cells. In the presence of relevant Ag, bone marrow-derived DC delivered activation signals to CD4+ T cells isolated from the DO11.10 TCR transgenic mice, leading to clonal expansion; secretion of IFN-γ, IL-2, and IL-4; and surface expression of CD69. Conversely, DO11.10 T cells delivered maturation signals to DC, leading to IL-6 and IL-12 production and CD40 up-regulation. FK506 (10−10–10−8 M) and cyclosporin A (10−9–10−7 M) each blocked efficiently and uniformly all the changes resulting from intercellular signaling in both DC→T cell and T cell→DC directions. Dexamethasone (10−9–10−6 M) suppressed all changes, except for CD69 up-regulation, rather incompletely. Remarkably, RAP (10−10–10−8 M) efficiently inhibited DC-induced T cell proliferation and T cell-mediated CD40 up-regulation by DC without abrogating other changes. Interestingly, T cell-independent DC maturation triggered by LPS stimulation was inhibited by dexamethasone, but not by other agents. Our results demonstrate contrasting pharmacological effects of RAP vs calcineurin inhibitors on Ag presentation, thus forming a conceptual framework for rationale-based selection (and combination) of immunosuppressive agents for clinical application.Keywords
This publication has 44 references indexed in Scilit:
- Induction of tumor-specific protective immunity by in situ Langerhans cell vaccineNature Biotechnology, 2002
- CYCLOSPORINE A INHIBITS THE EXPRESSION OF COSTIMULATORY MOLECULES ON IN VITRO-GENERATED DENDRITIC CELLSTransplantation, 1999
- Generic Signals and Specific OutcomesCell, 1999
- Immunosuppression by Glucocorticoids: Inhibition of NF-κB Activity Through Induction of IκB SynthesisScience, 1995
- The effect of cyclosporin A, FK506, and rapamycin on the murine chronic graft-versus-host response—anin vivomodel of Th2-like activityClinical and Experimental Immunology, 1995
- Activation of human dendritic cells through CD40 cross-linking.The Journal of Experimental Medicine, 1994
- The effect of rapamycin on T cell development in miceEuropean Journal of Immunology, 1994
- Rapamycin Prolongs Survival and Arrests Pathophysiologic Changes in Murine Systemic Lupus ErythematosusArthritis & Rheumatism, 1994
- Generation of large numbers of dendritic cells from mouse bone marrow cultures supplemented with granulocyte/macrophage colony-stimulating factor.The Journal of Experimental Medicine, 1992
- Induction by Antigen of Intrathymic Apoptosis of CD4 + CD8 + TCR lo Thymocytes in VivoScience, 1990