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25-hydroxyvitamin D Generates Immunomodulatory Plasticity in Human Periodontal Ligament-derived Mesenchymal Stromal Cells That is Inflammatory Context-dependent

Overview
Journal Front Immunol
Date 2023 Feb 10
PMID 36761739
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Abstract

Introduction: Human periodontal ligament-derived mesenchymal stromal cells (hPDL-MSCs) exhibit a tight bi-directional interaction with CD4 T lymphocytes. The hPDL-MSCs' immunomodulatory abilities are drastically enhanced by pro-inflammatory cytokines via boosting the expression of various immunomediators. 25-hydroxyvitamin D (25(OH)D), the major metabolite of vitamin D3 in the blood, affects both hPDL-MSCs and CD4 T lymphocytes, but its influence on their interaction is unknown.

Methods: Therefore, primary hPDL-MSCs were stimulated with tumor necrosis factor (TNF)-α a or interleukin (IL)-1β in the absence and presence of 25(OH)D followed by an indirect co-culture with phytohemagglutinin-activated CD4 T lymphocytes. The CD4 T lymphocyte proliferation, viability, and cytokine secretion were analyzed. Additionally, the expression of various immunomediators in hPDL-MSCs was investigated, and their implication was verified by using pharmacological inhibitors.

Results: 25(OH)D significantly counteracted the suppressive effects of IL-1β-treated hPDL-MSCs on CD4 T lymphocyte proliferation, whereas no effects were observed in the presence of TNF-α. Additionally, 25(OH)D significantly increased the percentage of viable CD4 T lymphocytes via TNF-α- or IL-1β-treated hPDL-MSCs. It also caused a significant decrease in interferon-γ, IL-17A, and transforming growth factor-β productions, which were triggered by TNF-α-treated hPDL-MSCs. 25(OH)D significantly decreased the production of various immunomediators in hPDL-MSCs. Inhibition of two of them, prostaglandin E2 and indoleamine-2,3-dioxygenase-1, partially abolished some of the hPDL-MSCs-mediated effects of 25(OH)D on CD4 T lymphocytes.

Conclusion: These data indicate that 25(OH)D influences the immunomodulatory activities of hPDL-MSCs. This modulatory potential seems to have high plasticity depending on the local cytokine conditions and may be involved in regulating periodontal tissue inflammatory processes.

Citing Articles

1,25-dihydroxyvitamin-D distinctly impacts the paracrine and cell-to-cell contact interactions between hPDL-MSCs and CD4 T lymphocytes.

Behm C, Milek O, Schwarz K, Rausch-Fan X, Moritz A, Andrukhov O Front Immunol. 2024; 15:1448597.

PMID: 39372405 PMC: 11449738. DOI: 10.3389/fimmu.2024.1448597.


Osteogenic Differentiation of Human Periodontal Ligament Stromal Cells Influences Their Immunosuppressive Potential toward Allogenic CD4 T Cells.

Milek O, Tur D, Ahcin L, Voitseshyna O, Behm C, Andrukhov O Int J Mol Sci. 2023; 24(22).

PMID: 38003629 PMC: 10671619. DOI: 10.3390/ijms242216439.

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