Cytokine Degradation by Biofilms of Porphyromonas gingivalis
Abstract
The aim of this study was to determine whether biofilms of Porphyromonas gingivalis could proteolytically degrade the cytokines interleukin (IL)-1beta, IL-6, or IL-1 receptor antagonist (IL-1ra). Biofilms were grown on membrane filters on the surface of Wilkins-Chalgren blood agar. The biofilms were removed from the plates, and solutions containing 2.5 microg/ml of each cytokine were added. Following incubation for up to 4.0 h, supernatants from the biofilms were subjected to SDS-PAGE. The separated proteins were transferred by Western blotting to PVDF membranes and probed with peroxidase-conjugated antibodies recognizing both the intact cytokines and their degradation products. After 2 h, no intact IL-1beta, IL-6, or IL-1ra were detectable. Cytokine proteolysis also occurred in the presence of horse serum. These results demonstrate that biofilm-grown P. gingivalis can degrade both pro- and anti-inflammatory cytokines and so may be able to perturb cytokine networks in vivo by eliminating cytokines from the local environment.
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Gingipains, trypsin-like cysteine proteinases produced by Porphyromonas gingivalis, can cleave IL-1β, IL-6, and IL-1ra.
“Likewise, gingipains, a trypsin-like cysteine proteinases produced by Porphyromonas gingivalis, can cleave IL-1β, IL-6, and IL-1ra.149”
From The emerging roles of bacterial proteases in intestinal diseases (2023) · cites this paper as [149]
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- Authors
- Fletcher, J., Nair, S., Poole, S., Henderson, B., & Wilson, M.
- Affiliations
- University College London (GB)
- National Institute for Biological Standards and Control (GB)
- Venue
- Current Microbiology
- Published
- 1998-04-01
- Volume
- 36
- Issue
- 4
- Pages
- 216-219
- ISSN
- 0343-8651 (ISSN-L)
- 1432-0991
- OpenAlex
- W2029995817
- Cited by
- 51
- References
- 10
- Citations by year
- 2026: 1 · 2025: 1 · 2023: 1 · 2021: 1 · 2020: 1 · 2019: 1 · 2016: 3 · 2014: 2 · 2013: 7 · 2012: 1
- FWCI
- 10.21
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Current Microbiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
- Health Sciences › Medicine › Urology › Periodontal Regeneration and Treatments
- Keywords
- Porphyromonas gingivalis, biofilm, cytokine degradation, proteolysis, IL-1β, interleukin-6, interleukin-1 receptor antagonist, periodontal pathogens, anti-inflammatory cytokines, inflammatory cytokines, host-pathogen interaction
- MeSH terms
- Interleukin-1, Blotting, Western, Interleukin-6, Porphyromonas gingivalis, Receptors, Interleukin-1, Biofilms
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