Prevention and Mitigation of Experimental Autoimmune Encephalomyelitis by Murine β-Defensins via Induction of Regulatory T Cells

The Journal of Investigative Dermatology
Anika BruhsAgatha Schwarz

Abstract

The antimicrobial peptide murine β-defensin-14 (mBD14) was found to exert, in addition to its antimicrobial activity, the capacity to induce regulatory T cells as demonstrated in the model of contact hypersensitivity. Because it is induced by ultraviolet radiation, mBD14 may contribute to the antigen-specific immunosuppression by ultraviolet radiation. To prove whether this applies also for other immunologic models and because ultraviolet radiation appears to have beneficial effects on multiple sclerosis, we utilized the model of experimental autoimmune encephalomyelitis. Injection of mBD14 into mice before immunization with myelin oligodendrocyte glycoprotein caused amelioration of the disease with less central nervous system inflammation and decreased levels of proinflammatory cytokines and cytotoxic T cells. The beneficial effect was due to Foxp3(+) regulatory T cells because it was lost on in vivo depletion of regulatory T cells. mBD14, however, also acts in a therapeutic setting, because injection of mBD14 into mice with clinical features of experimental autoimmune encephalomyelitis reduced the clinical score significantly. Human β-defensin-3, the human orthologue of mBD14, induced in vitro regulatory T cell-specific marke...Continue Reading

Citations

May 28, 2020·Frontiers in Immunology·Chunye Zhang, Ming Yang
Jul 8, 2016·Pharmaceuticals·Mahadevappa HemshekharNeeloffer Mookherjee
Jul 1, 2020·Frontiers in Immunology·Jennifer R ShelleyJulia R Dorin
Mar 24, 2020·Journal of Leukocyte Biology·Fernando AlvarezCiriaco A Piccirillo
Sep 29, 2020·Frontiers in Immunology·Wenjie Liang, Julien Diana
Dec 19, 2017·International Immunopharmacology·Xiangwei YuanXianlong Zhang
Sep 11, 2021·Biological Chemistry·Thomas Schwarz, Agatha Schwarz

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