Journal of Oral Science Research ›› 2023, Vol. 39 ›› Issue (6): 541-546.DOI: 10.13701/j.cnki.kqyxyj.2023.06.014

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Vitamin D/VDR Signaling Regulates IL-10 Expression in Macrophages from Oral Lichen Planus

GE Xuejun1,2, SUN Zhuo1,2, ZHAO Zhenni1,2, DU Jie1,2*   

  1. 1. Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, Shanxi, China;
    2. Department of Endodontics, Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China
  • Received:2023-01-06 Online:2023-06-28 Published:2023-06-21

Abstract: Objective: To investigate the regulatory roles of vitamin D and its receptor VDR in the cytokines production in macrophages from oral lichen planus (OLP). Methods: Twenty OLP patients and 20 healthy volunteers were recruited. Macrophages from oral tissues were isolated, and the expressions of cytokines and VDR was detected. IL-10 levels were measured in monocyte-derived macrophages and THP-1 cells overexpressed VDR or treated with vitamin D. The binding of VDR and its element in the promoter region of IL-10 gene was confirmed by ChIP and luciferase report assays. Cytokines levels were detected in OLP macrophages with vitamin D treatment. Results: VDR expression was decreased in OLP macrophages and positively correlated with IL-10 expression. Vitamin D/VDR signaling up-regulated IL-10 levels in monocyte-derived macrophages and THP-1 cells. Mechanistically, VDR was able to interact with its element in the promoter to enhance the transcription of IL-10. Vitamin D increased IL-10 levels and decreased pro-inflammatory cytokines expression in OLP macrophages.Conclusion: Vitamin D/VDR signaling regulates IL-10 transcription to mediate cytokines levels in OLP macrophages.

Key words: oral lichen planus, vitamin D, vitamin D receptor, cytokine, IL-10