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Updated: May 18, 2026
07:15
Robust Ligature-Induced Model of Murine Periodontitis for the Evaluation of Oral Neutrophils
Published on: January 21, 2020
Complement and dysbiosis in periodontal disease
George Hajishengallis1, John D Lambris
1University of Pennsylvania School of Dental Medicine, Department of Microbiology, Philadelphia, PA 19104, USA. geoh@upenn.edu
Immunobiology
|September 12, 2012
Summary
Porphyromonas gingivalis subverts host immunity by exploiting crosstalk between complement and Toll-like receptors (TLRs). This leads to immune evasion, dysbiosis, and periodontitis, highlighting new therapeutic targets.
Area of Science:
- Immunology
- Microbiology
- Periodontal Disease
Background:
- Crosstalk between complement and Toll-like receptors (TLRs) is crucial for coordinating host immunity.
- The bacterium Porphyromonas gingivalis possesses C5 convertase-like enzymatic activity.
- P. gingivalis exploits complement-TLR crosstalk to evade host defenses.
Purpose of the Study:
- To understand how P. gingivalis manipulates complement function.
- To investigate the role of complement-TLR crosstalk in P. gingivalis-induced periodontitis.
- To identify potential therapeutic targets for periodontitis.
Main Methods:
- Analysis of P. gingivalis enzymatic activity.
- Investigation of complement-TLR signaling pathways.
- Microbiota analysis in periodontitis models.
Main Results:
- P. gingivalis effectively exploits complement-TLR crosstalk for immune evasion.
- Defective immune surveillance results in microbiota dysbiosis.
- This dysbiosis is linked to the development of inflammatory periodontitis.
Conclusions:
- P. gingivalis actively subverts host immunity through complement-TLR crosstalk.
- Understanding these mechanisms provides novel targets for complement-based therapeutics.
- Targeting this crosstalk could offer new strategies for treating periodontitis.
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