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The identification of bacterial gene expression differences using mRNA-based isothermal subtractive hybridization
E A Utt1, J P Brousal, L C Kikuta-Oshima
1Pathogenesis Laboratory, Centers for Disease Control and Prevention, Atlanta, GA 30333.
Canadian Journal of Microbiology
|February 1, 1995
Summary
This study presents a novel method to identify gene expression differences between bacterial strains using mRNA differences. This technique successfully isolated the hly gene in Listeria monocytogenes.
Area of Science:
- Microbiology
- Molecular Biology
- Genetics
Background:
- Bacterial strain differentiation is crucial for understanding pathogenesis and evolution.
- Identifying specific gene expression changes between related strains can reveal functional differences.
Purpose of the Study:
- To develop and demonstrate a method for isolating and determining differences in gene expression between related bacterial strains.
- To identify specific genes, such as the hly gene, that are differentially expressed.
Main Methods:
- Utilized mRNA differences as the basis for gene expression analysis.
- Employed cDNA-RNA hybridization and subtraction techniques.
- Applied Southern hybridization to confirm gene identification.
Main Results:
- Successfully isolated cDNA fragments representing differential gene expression between two Listeria monocytogenes strains.
- Identified the hly gene, responsible for listeriolysin O production, as differentially expressed.
Conclusions:
- The described method is effective for detecting gene expression variations between closely related bacterial strains.
- This approach facilitates the identification of specific genes contributing to phenotypic differences.