Detection of possible AI-2-mediated quorum sensing system in commensal intestinal bacteria |
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Authors: | F. Lukáš G. Gorenc J. Kopečný |
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Affiliation: | Institute of Animal Physiology and Genetics, v.v.i., Academy of Science of the Czech Republic, 142 20, Prague, Czechia, lukas@iapg.cas.cz. |
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Abstract: | The Vibrio harveyi strain BB170-autoinducer bioassay was used to detect possible quorum sensing autoinducer-2 molecule (AI-2) in culture fluids of commensal intestinal bacteria. Culture fluids of Bacteroides vulgatus, Clostridium proteoclasticum, Escherichia coli, Eubacterium rectale, Lachnospira multipara, Pseudobutyrivibrio ruminis, Roseburia intestinalis, Ruminococcus albus and Ruminococcus flavefaciens contained AI-2-like molecules. The PCR bands from some of the tested strains could be also amplified using primers designed for the luxS gene. These findings suggest that AI-2 is present in the gastrointestinal tract; however, it has not yet been proved whether it is used for bacterial cell-to-cell communication. |
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