Injecting Immunosuppressive M2 Macrophages Alleviates the Symptoms of Periodontitis in Mice

Frontiers in Molecular Biosciences
Yibin MiaoXiaoping Lin

Abstract

Periodontitis is the second most common oral disease affecting tooth-supporting structures. The tissue damage is mainly initiated by the excessive secretion of proinflammatory cytokines by immune cells. Macrophages are a type of antigen-presenting cells that influence the adaptive immunity function. We used a unique set of cytokines, i.e., a combination of IL-4, IL-13, and IL-10, to stimulate macrophages into a subset of M2 polarization cells that express much higher levels of ARG-1, CD206, and PDL-2 genes. The cells' anti-inflammatory potential was tested with mixed-lymphocyte reaction assay, which showed that this subset of macrophages could increase IL-2 secretion and suppress IL-17, IL-6, and TNF-α secretion by splenocytes. The gram-negative bacterial species Porphyromonas gingivalis was used to initiate an inflammatory process in murine periodontal tissues. In the meantime, cell injection therapy was used to dampen the excessive immune reaction and suppress osteoclast differentiation during periodontitis. Maxilla was collected and analyzed for osteoclast formation. The results indicated that mice in the cell injection group exhibited less osteoclast activity within the periodontal ligament region than in the periodontitis ...Continue Reading

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Citations

Apr 27, 2021·Frontiers in Immunology·Zahra KargarpourReinhard Gruber
May 25, 2021·Journal of Leukocyte Biology·Wenzhe WangBei Li

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Methods Mentioned

BETA
Polymerase Chain Reaction
flow cytometry

Software Mentioned

FCAP array

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