Activation of Invariant NK T Cells in Periodontitis Lesions

Nowak, M., Kramer, B., Haupt, M., Papapanou, P. N., Kebschull, J., Hoffmann, P., Schmidt-Wolf, I. G., Jepsen, S., Brossart, P., Perner, S., Kebschull, M. (March 2013) Activation of Invariant NK T Cells in Periodontitis Lesions. Journal of Immunology, 190 (5). pp. 2282-2291. ISSN 0022-1767

Abstract

Periodontitis is one of the most prevalent human inflammatory diseases. The major clinical phenotypes of this polymicrobial, biofilm-mediated disease are chronic and aggressive periodontitis, the latter being characterized by a rapid course of destruction that is generally attributed to an altered immune-inflammatory response against periodontal pathogens. Still, the biological basis for the pathophysiological distinction of the two disease categories has not been well documented yet. Type I NKT cells are a lymphocyte subset with important roles in regulating immune responses to either tolerance or immunity, including immune responses against bacterial pathogens. In this study, we delineate the mechanisms of NKT cell activation in periodontal infections. We show an infiltration of type I NKT cells in aggressive, but not chronic, periodontitis lesions in vivo. Murine dendritic cells infected with aggressive periodontitis-associated Aggregatibacter actinomycetemcomitans triggered a type I IFN response followed by type I NKT cell activation. In contrast, infection with Porphyromonas gingivalis, a principal pathogen in chronic periodontitis, did not induce NKT cell activation. This difference could be explained by the absence of a type I IFN response to P. gingivalis infection. We found these IFNs to be critical for NKT cell activation. Our study provides a conceivable biological distinction between the two periodontitis subforms and identifies factors required for the activation of the immune system in response to periodontal bacteria. The Journal of Immunology, 2013, 190: 2282-2291.

Item Type:	Paper
Uncontrolled Keywords:	human dendritic cells aggressive periodontitis porphyromonas-gingivalis aggregatibacter-actinomycetemcomitans pathogenic bacteria host-defense in-vivo glycosphingolipids interferon antigens
Subjects:	diseases & disorders organs, tissues, organelles, cell types and functions > cell types and functions > cell types > T cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > T cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > T cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types organs, tissues, organelles, cell types and functions > cell types and functions > cell types organs, tissues, organelles, cell types and functions > cell types and functions > cell types organs, tissues, organelles, cell types and functions > cell types and functions organs, tissues, organelles, cell types and functions > cell types and functions > cell types > dendritic cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > dendritic cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > dendritic cells organism description > animal > mammal > primates > hominids > human diseases & disorders > inflammation
CSHL Authors:	Kebschull, Justus
Communities:	CSHL labs > Zador lab School of Biological Sciences > Publications
Depositing User:	Matt Covey
Date:	1 March 2013
Date Deposited:	01 Apr 2013 16:40
Last Modified:	19 Jul 2021 14:33
PMCID:	PMC3620697
Related URLs:	Publisher
URI:	https://repository.cshl.edu/id/eprint/28036

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