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Updated: May 3, 2026

A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues
Published on: February 19, 2019
Genetic manipulation of Staphylococcus aureus
Olaf Schneewind1, Dominique Missiakas
1Department of Microbiology, University of Chicago, Chicago, Illinois.
Abstract:
Staphylococcus aureus is a facultative anaerobic Gram-positive coccus and a member of the normal skin flora, as well as that of the nasal passages of humans. However, S. aureus can also gain entry into the host and cause life-threatening infections or persist as disease foci that develop into suppurative abscesses. While genetically tractable, the manipulation of S. aureus remains challenging. This unit describes methods developed in our laboratory for gene disruption by allelic replacement and transposition. We also provide a protocol for bacteriophage-mediated transduction of mutants marked with selectable alleles and describe plasmid utilization for complementation studies.
Insights
This study details genetic manipulation techniques for Staphylococcus aureus, a bacterium causing serious infections. Methods for gene disruption and transfer are described to aid in studying this challenging pathogen.
Area of Science:
- Microbiology
- Bacterial Genetics
- Molecular Biology
Background:
- Staphylococcus aureus is a common bacterium found on human skin and in nasal passages.
- While part of normal flora, S. aureus can cause severe infections and abscesses.
- Genetic manipulation of S. aureus is crucial for understanding its pathogenicity but remains challenging.
Purpose of the Study:
- To describe established laboratory methods for genetic manipulation of Staphylococcus aureus.
- To provide protocols for gene disruption and transfer in S. aureus.
- To facilitate further research into S. aureus pathogenesis and treatment.
Main Methods:
- Gene disruption via allelic replacement.
- Gene disruption via transposition.
- Bacteriophage-mediated transduction of mutants.
- Plasmid utilization for complementation studies.
Main Results:
- Detailed protocols for key genetic manipulation techniques in S. aureus are presented.
- These methods enable efficient gene disruption and mutant creation.
- The described techniques facilitate complementation studies for validating gene function.
Conclusions:
- The provided methods offer robust tools for the genetic manipulation of Staphylococcus aureus.
- These techniques are essential for advancing research into S. aureus infections.
- This unit serves as a practical guide for researchers working with S. aureus genetics.
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