Related Experiment Video
Updated: Apr 30, 2026
A Mouse Model to Assess Innate Immune Response to Staphylococcus aureus Infection
Published on: February 28, 2019
Mouse models for infectious diseases caused by Staphylococcus aureus
Hwan Keun Kim1, Dominique Missiakas1, Olaf Schneewind1
1Department of Microbiology, University of Chicago, 920 East 58th Street, Chicago, IL 60637, United States.
Abstract:
Staphylococcus aureus - a commensal of the human skin, nares and gastrointestinal tract - is also a leading cause of bacterial skin and soft tissue infection (SSTIs), bacteremia, sepsis, peritonitis, pneumonia and endocarditis. Antibiotic-resistant strains, designated MRSA (methicillin-resistant S. aureus), are common and represent a therapeutic challenge. Current research and development efforts seek to address the challenge of MRSA infections through vaccines and immune therapeutics. Mice have been used as experimental models for S. aureus SSTI, bacteremia, sepsis, peritonitis and endocarditis. This work led to the identification of key virulence factors, candidate vaccine antigens or immune-therapeutics that still require human clinical testing to establish efficacy. Past failures of human clinical trials raised skepticism whether the mouse is an appropriate model for S. aureus disease in humans. S. aureus causes chronic-persistent infections that, even with antibiotic or surgical intervention, reoccur in humans and in mice. Determinants of S. aureus evasion from human innate and adaptive immune responses have been identified, however only some of these are relevant in mice. Future research must integrate these insights and refine the experimental mouse models for specific S. aureus diseases to accurately predict the failure or success for candidate vaccines and immune-therapeutics.
Insights
Staphylococcus aureus infections, including antibiotic-resistant MRSA, pose a significant challenge. Refining mouse models is crucial for developing effective vaccines and immune therapies against these persistent bacterial diseases.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Background:
- Staphylococcus aureus is a common bacterium causing various infections, including antibiotic-resistant MRSA.
- MRSA infections present a major therapeutic challenge, driving research into vaccines and immune therapeutics.
- Mice are frequently used experimental models for S. aureus diseases.
Purpose of the Study:
- To evaluate the efficacy of mouse models in predicting human responses to S. aureus infections.
- To identify key virulence factors and potential targets for vaccines and immune therapeutics.
- To address the limitations of current mouse models in replicating human S. aureus disease dynamics.
Main Methods:
- Review of existing research on S. aureus infections in mouse models.
- Analysis of virulence factors and immune evasion mechanisms in both humans and mice.
- Comparison of disease progression and recurrence in human and murine models.
Main Results:
- Mouse models have aided in identifying S. aureus virulence factors and vaccine candidates.
- Significant differences exist in immune evasion determinants between human and mouse models.
- S. aureus can cause chronic-persistent infections in both humans and mice, often recurring despite treatment.
Conclusions:
- Current mouse models have limitations in accurately predicting the success of S. aureus vaccines and therapeutics in humans.
- Further refinement of experimental mouse models is necessary to better reflect human immune responses and disease persistence.
- Integrating human-specific immune evasion insights into mouse models is essential for future research and development efforts.
