1,25-Dihydroxyvitamin D3 and IL-2 Combine to Inhibit T Cell Production of Inflammatory Cytokines and Promote Development of Regulatory T Cells Expressing CTLA-4 and FoxP3
Open Access
- 1 November 2009
- journal article
- research article
- Published by The American Association of Immunologists in The Journal of Immunology
- Vol. 183 (9), 5458-5467
- https://doi.org/10.4049/jimmunol.0803217
Abstract
The active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), has potent immunomodulatory properties that have promoted its potential use in the prevention and treatment of infectious disease and autoimmune conditions. A variety of immune cells, including macrophages, dendritic cells, and activated T cells express the intracellular vitamin D receptor and are responsive to 1,25(OH)2D3. Despite this, how 1,25(OH)2D3 regulates adaptive immunity remains unclear and may involve both direct and indirect effects on the proliferation and function of T cells. To further clarify this issue, we have assessed the effects of 1,25(OH)2D3 on human CD4+CD25− T cells. We observed that stimulation of CD4+CD25− T cells in the presence of 1,25(OH)2D3 inhibited production of proinflammatory cytokines including IFN- γ, IL-17, and IL-21 but did not substantially affect T cell division. In contrast to its inhibitory effects on inflammatory cytokines, 1,25(OH)2D3 stimulated expression of high levels of CTLA-4 as well as FoxP3, the latter requiring the presence of IL-2. T cells treated with 1,25(OH)2D3 could suppress proliferation of normally responsive T cells, indicating that they possessed characteristics of adaptive regulatory T cells. Our results suggest that 1,25(OH)2D3 and IL-2 have direct synergistic effects on activated T cells, acting as potent anti-inflammatory agents and physiologic inducers of adaptive regulatory T cells.Keywords
This publication has 67 references indexed in Scilit:
- Divergent roles of IL-23 and IL-12 in host defense against Klebsiella pneumoniae The Journal of Experimental Medicine, 2005
- Manipulating dendritic cells to induce regulatory T cellsMicrobes and Infection, 2005
- Exocytosis of CTLA-4 Is Dependent on Phospholipase D and ADP Ribosylation Factor-1 and Stimulated during Activation of Regulatory T CellsThe Journal of Immunology, 2005
- Tolerogenic Dendritic Cells Induced by Vitamin D Receptor Ligands Enhance Regulatory T Cells Inhibiting Autoimmune DiabetesAnnals of the New York Academy of Sciences, 2003
- Inhibition of human T cell proliferation by CTLA-4 utilizes CD80 and requires CD25+ regulatory T cellsEuropean Journal of Immunology, 2002
- In Vitro Generation of Interleukin 10–producing Regulatory CD4+ T Cells Is Induced by Immunosuppressive Drugs and Inhibited by T Helper Type 1 (Th1)– and Th2-inducing CytokinesThe Journal of Experimental Medicine, 2002
- 1α,25-Dihydroxyvitamin D3 Has a Direct Effect on Naive CD4+ T Cells to Enhance the Development of Th2 CellsThe Journal of Immunology, 2001
- Dendritic cell modulation by 1α,25 dihydroxyvitamin D3and its analogs: A vitamin D receptor-dependent pathway that promotes a persistent state of immaturityin vitroandin vivoProceedings of the National Academy of Sciences of the United States of America, 2001
- Immunologic Self-Tolerance Maintained by Cd25+Cd4+Regulatory T Cells Constitutively Expressing Cytotoxic T Lymphocyte–Associated Antigen 4The Journal of Experimental Medicine, 2000
- 1α,25-Dihydroxyvitamin D3 Inhibits Differentiation, Maturation, Activation, and Survival of Dendritic Cells Leading to Impaired Alloreactive T Cell ActivationThe Journal of Immunology, 2000