Related Experiment Video
Updated: Jul 2, 2026
14:06
Mapping Bacterial Functional Networks and Pathways in Escherichia Coli using Synthetic Genetic Arrays
Published on: November 12, 2012
Genetic tools for studying Capnocytophaga canimorsus
Manuela Mally1, Guy R Cornelis
1Infection Biology, Biozentrum, University of Basel, Basel, Switzerland.
Applied and Environmental Microbiology
|August 30, 2008
Summary
New genetic tools enable the study of Capnocytophaga canimorsus, a bacterium causing severe infections from dog bites. Researchers developed methods for genetic manipulation, aiding research into its pathogenesis and related species.
Area of Science:
- Microbiology
- Molecular Biology
- Genetics
Background:
- Capnocytophaga canimorsus is a canine oral bacterium causing severe human infections, often from dog bites.
- Existing genetic methods are unsuitable for Capnocytophaga due to its low evolutionary relationship to Proteobacteria.
Purpose of the Study:
- To establish effective genetic tools for manipulating Capnocytophaga canimorsus.
- To facilitate molecular studies on the pathogenesis of C. canimorsus and other oral Capnocytophaga species.
Main Methods:
- Introduction of the Tn4351 transposon into C. canimorsus via conjugation.
- Construction of Escherichia coli-Capnocytophaga shuttle vectors using a identified repA gene.
- Plasmid introduction via conjugation or electrotransformation and use of antibiotic resistance markers (cefoxitin, tetracycline, erythromycin).
Main Results:
- Successful introduction of Tn4351 conferring erythromycin resistance.
- Development of functional shuttle vectors for C. canimorsus.
- Identification of effective antibiotic resistance markers and development of an expression vector and site-directed mutagenesis method.
Conclusions:
- The developed genetic tools are crucial for advancing the molecular understanding of C. canimorsus pathogenesis.
- These methods will also benefit research into other oral Capnocytophaga species.
