ICAM1 + gingival fibroblasts modulate periodontal inflammation to mitigate bone loss.

Autor:	Kim WS; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States., Prasongyuenyong K; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States.; Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Prince of Songkla University, Hatyai, Songkhla, Thailand., Ko A; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States., Debnath R; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States., Chen Z; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States., Zhou JX; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States., Shaaf E; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States., Ko KI; Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States.
Jazyk:	angličtina
Zdroj:	Frontiers in immunology [Front Immunol] 2024 Nov 22; Vol. 15, pp. 1484483. Date of Electronic Publication: 2024 Nov 22 (Print Publication: 2024).
DOI:	10.3389/fimmu.2024.1484483
Abstrakt:	Tissue-resident fibroblasts are heterogeneous and provide an endogenous source of cytokines that regulate immunologic events in many osteolytic diseases. Identifying distinct inflammatory fibroblast subsets and conducting mechanistic in vivo studies are critical for understanding disease pathogenesis and precision therapeutics, which is poorly explored in periodontitis. Here, we surveyed published single-cell datasets for fibroblast-specific analysis and show that Intercellular Adhesion Molecule-1 (ICAM1) expression selectively defines a fibroblast subset that exhibits an inflammatory transcriptional profile associated with nuclear factor-κB (NF-κB) pathway. ICAM1 + fibroblasts expand in both human periodontitis and murine ligature-induced periodontitis model, which have upregulated expression of CCL2 and CXCL1 compared to other fibroblast populations. Using a mouse model to selectively target gingival stromal cells, we further show that disruption of an inflammatory pathway by inhibiting transcriptional activity of NF-κB in these cells accelerated periodontal bone loss. Mechanistically, this was linked to a reduction of CCL2 expression by the ICAM1 + fibroblasts, leading to impaired macrophage recruitment and efferocytosis that was associated with persistent neutrophilic inflammation. These results may have a significant therapeutic implication as ICAM1 + gingival fibroblasts exert a protective response by regulating innate immune responses that are needed for the controlled inflammatory events in early stages of periodontitis. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2024 Kim, Prasongyuenyong, Ko, Debnath, Chen, Zhou, Shaaf and Ko.)
Databáze:	MEDLINE
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