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Updated: Feb 17, 2026

Development and Assessment of Intracellular Infection Models for Staphylococcus aureus
Published on: January 17, 2025
Inside job: Staphylococcus aureus host-pathogen interactions
Jessica Horn1, Kathrin Stelzner1, Thomas Rudel1
1Chair of Microbiology, Biocenter, University of Würzburg, Am Hubland, 97074 Würzburg, Germany.
Abstract:
Staphylococcus aureus is a notorious opportunistic pathogen causing a plethora of diseases. Recent research established that once phagocytosed by neutrophils and macrophages, a certain percentage of S. aureus is able to survive within these phagocytes which thereby even may contribute to dissemination of the pathogen. S. aureus further induces its uptake by otherwise non-phagocytic cells and the ensuing intracellular cytotoxicity is suggested to lead to tissue destruction, whereas bacterial persistence within cells is thought to lead to immune evasion and chronicity of infections. We here review recent work on the S. aureus host pathogen interactions with a focus on the intracellular survival of the pathogen.
Insights
Staphylococcus aureus can survive inside immune cells like neutrophils and macrophages, potentially spreading infection. This intracellular survival helps the bacteria evade the immune system and cause chronic diseases.
Area of Science:
- Microbiology
- Immunology
- Pathogen Biology
Background:
- Staphylococcus aureus is an opportunistic pathogen causing numerous diseases.
- S. aureus can survive within phagocytic cells (neutrophils, macrophages) after uptake.
- Intracellular S. aureus can lead to tissue damage, immune evasion, and chronic infections.
Purpose of the Study:
- To review recent research on Staphylococcus aureus host-pathogen interactions.
- To focus on the mechanisms and implications of intracellular S. aureus survival.
Main Methods:
- Literature review of recent studies on S. aureus intracellular survival.
- Analysis of host-pathogen interactions focusing on phagocytic and non-phagocytic cells.
Main Results:
- S. aureus actively survives within neutrophils and macrophages.
- The pathogen can be internalized by non-phagocytic cells.
- Intracellular survival contributes to dissemination, immune evasion, and chronicity.
Conclusions:
- Intracellular survival is a key virulence factor for Staphylococcus aureus.
- Understanding intracellular S. aureus is crucial for developing new therapeutic strategies.
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