Loss of Neutrophil Homing to the Periodontal Tissues Modulates the Composition and Disease Potential of the Oral Microbiota
- 16 November 2021
- journal article
- research article
- Published by American Society for Microbiology in Infection and Immunity
- Vol. 89 (12)
- https://doi.org/10.1128/iai.00309-21
Abstract
Periodontal disease is considered to arise from an imbalance in the interplay between the host and its commensal microbiota, characterized by inflammation, destructive periodontal bone loss and a dysbiotic oral microbial community. The neutrophil is a key component of defence of the periodontium: defects in their number or efficacy of function predisposes individuals to development of periodontal disease. Paradoxically, neutrophil activity, as part of a deregulated inflammatory response, is considered to be an important element in the destructive disease process. In this investigation we examined the role the neutrophil plays in the regulation of the oral microbiota, by analysis of the microbiome composition in mice lacking the CXCR2 neutrophil receptor required for recruitment to the periodontal tissues. A breeding protocol was employed which ensured that only the oral microbiota of wild type (CXCR2+/+) mice was transferred to subsequent generations of wild type, heterozygote and homozygote littermates. In the absence of neutrophils, the microbiome undergoes a significant shift in total load and composition compared to when normal levels of neutrophil recruitment into the gingival tissues occur, and this is accompanied by a significant increase in periodontal bone pathology. However, transfer of the oral microbiome of CXCR2-/- mice into germ free CXCR2+/+ mice led to restoration of the microbiome to the wild type CXCR2+/+ composition and the absence of pathology. These data demonstrate that the composition of the oral microbiome is inherently flexible and is governed to a significant extent by the genetics and resultant phenotype of the host organism.Keywords
Funding Information
- UKRI | Medical Research Council (MR/P012175/1, MR/P012175/2)
This publication has 35 references indexed in Scilit:
- Low-Abundance Biofilm Species Orchestrates Inflammatory Periodontal Disease through the Commensal Microbiota and ComplementCell Host & Microbe, 2011
- Complement: a key system for immune surveillance and homeostasisNature Immunology, 2010
- Periodontitis: a polymicrobial disruption of host homeostasisNature Reviews Microbiology, 2010
- DNA methylation status of the IL8 gene promoter in oral cells of smokers and non‐smokers with chronic periodontitisJournal of Clinical Periodontology, 2009
- The Management of Inflammation in Periodontal DiseaseThe Journal of Periodontology, 2008
- The chemokine receptor CXCR2 is differentially regulated on glial cells in vivo but is not required for successful remyelination after cuprizone‐induced demyelinationGlia, 2008
- An obesity-associated gut microbiome with increased capacity for energy harvestNature, 2006
- VEGAN, a package of R functions for community ecologyJournal of Vegetation Science, 2003
- Genetic Control of Susceptibility toPorphyromonas gingivalis-Induced Alveolar Bone Loss in MiceInfection and Immunity, 2000
- LEUKOCYTE ADHESION DEFICIENCY: An Inherited Defect in the Mac-1, LFA-1, and p150,95 GlycoproteinsAnnual Review of Medicine, 1987