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J Infect Dis. 2011 Jan 1;203(1):122-30. doi: 10.1093/infdis/jiq008.

1,25-dihydroxyvitamin D3 modulates cytokine production induced by Candida albicans: impact of seasonal variation of immune responses.

Author information

1
Department of Laboratory Medicine, Radboud University Nijmegen Medical Center; 3Nijmegen Institute for Infection, Inflammation and Immunity, Nijmegen, The Netherlands.

Abstract

BACKGROUND:

Our interest in immunological effects produced by vitamin D(3) (1,25(OH)(2)D(3)) and its therapeutic potential prompted us to examine the role of 1,25(OH)(2)D(3) on cytokine production by Candida albicans.

METHODS:

Peripheral blood mononuclear cells (PBMC) with stimulated C. albicans and 1,25(OH)(2)D(3), cytokine concentrations were measured in supernatant. Quantitative polymerase chain reaction (qPCR) was performed for T cell transcription factors, SOCS1 and 3. TLR2/4, Dectin-1, and mannose receptor expression was studied using flow cytometry and qPCR. An ex-vivo stimulation study was carried out in healthy volunteers to investigate the seasonality of immune response to C. albicans.

RESULTS:

Upon in vitro C. albicans stimulation, 1,25(OH)(2)D(3) induced a dose-dependent, down-regulation of IL-6, TNFα, IL-17, and IFNγ. It also increased IL-10 production. The shift in cytokine profile was not due to 1,25(OH)(2)D(3) augmenting expression of either Thelper differentiation factors or SOCS1 and SOCS3 mRNA. 1,25(OH)(2)D(3) inhibited TLR2, TLR4, Dectin-1, and MR mRNA and protein expression. In our seasonality study, both IL-17 and IFNγ levels were suppressed in summer when 25(OH)D(3) levels were elevated.

CONCLUSION:

Vitamin D(3) skews cytokine responses toward an antiinflammatory profile, mediated by suppression of TLR2, TLR4, Dectin-1, and MR transcription, leading to reduced surface expression. The biological relevance of these effects has been confirmed by the seasonality of cytokine responses.

PMID:
21148505
PMCID:
PMC3086448
DOI:
10.1093/infdis/jiq008
[Indexed for MEDLINE]
Free PMC Article

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