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Updated: Jan 28, 2026

Porphyromonas gingivalis as a Model Organism for Assessing Interaction of Anaerobic Bacteria with Host Cells
Published on: December 17, 2015
[Research progress on invasion-related virulence factors in Porphyromonas gingivalis]
1Department of Endodontics, Capital Medical University School of Stomatology, Beijing 100050, China.
Abstract:
Porphyromonas gingivalis (Pg) is a kind of gram-negative obligate anaerobes. It can invade and internalize within host cells. The invasion ability of Pg is very important for the occurrence and development of diseases and has been a hot topic for a long time. Remaining pathogenic characteristics in cell is one of its pathogenesis. In the process of invading host, the specific bacterial adhesin combine with the ligand of host cells, which activate various signal transduction pathways and trigger bacterial internalization. Virulence factors in Pg, such as fimbriae, gingival protease, hemagglutinins and outer membrane vesicles play significant roles in the process. This review summarized the research progress of the virulence factors which relate to Pg's invasion, which provided a serious of new ideas on exploring Pg's pathogenesis and the prevention and treatment of related diseases.
Insights
Porphyromonas gingivalis (Pg) invades host cells, a key step in disease development. This review details virulence factors like fimbriae and proteases that enable Pg invasion and pathogenesis.
Area of Science:
- Microbiology
- Pathogenesis
- Cell Biology
Background:
- Porphyromonas gingivalis (Pg) is a gram-negative anaerobe.
- Pg invasion and intracellular survival are critical for disease development.
- Understanding Pg pathogenesis requires studying its invasion mechanisms.
Purpose of the Study:
- To review research on virulence factors involved in Pg host cell invasion.
- To provide insights into Pg pathogenesis.
- To suggest new avenues for disease prevention and treatment.
Main Methods:
- Literature review of scientific articles on Porphyromonas gingivalis.
- Analysis of virulence factors contributing to bacterial invasion.
- Synthesis of current knowledge on Pg pathogenesis.
Main Results:
- Pg utilizes specific adhesins to bind host cell ligands, triggering internalization.
- Key virulence factors include fimbriae, gingival protease, hemagglutinins, and outer membrane vesicles.
- These factors are crucial for Pg's ability to invade and persist within host cells.
Conclusions:
- Virulence factors significantly contribute to Porphyromonas gingivalis invasion and pathogenesis.
- Further research into these factors can illuminate disease mechanisms.
- Targeting these factors may offer novel strategies for treating Pg-associated diseases.
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