Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae
Reported numbers of diarrheal samples exhibiting co-infections or multiple infections, with two or more infectious agents, are rising, likely due to advances in bacterial diagnostic techniques. Bacterial species detected in these samples include Vibrio cholerae (V. cholerae) and enteropathogenic Esc...
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Taylor & Francis Group
2022-12-01
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| Series: | Gut Microbes |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19490976.2022.2138677 |
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| author | Orna Gorelik Alona Rogad Lara Holoidovsky Michael M. Meijler Neta Sal-Man |
| author_facet | Orna Gorelik Alona Rogad Lara Holoidovsky Michael M. Meijler Neta Sal-Man |
| author_sort | Orna Gorelik |
| collection | DOAJ |
| description | Reported numbers of diarrheal samples exhibiting co-infections or multiple infections, with two or more infectious agents, are rising, likely due to advances in bacterial diagnostic techniques. Bacterial species detected in these samples include Vibrio cholerae (V. cholerae) and enteropathogenic Escherichia coli (EPEC), which infect the small intestine and are associated with high mortality rates. It has previously been reported that EPEC exhibit enhanced virulence in the presence of V. cholerae owing to their ability to sense and respond to elevated concentrations of cholera autoinducer 1 (CAI-1), which is the primary quorum-sensing (QS) molecule produced by V. cholerae. In this study, we examined this interspecies bacterial communication in the presence of indole, a major microbiome-derived metabolite found at high concentrations in the human gut. Interestingly, we discovered that although indole did not affect bacterial growth or CAI-1 production, it impaired the ability of EPEC to enhance its virulence activity in response to the presence of V. cholerae. Furthermore, the co-culture of EPEC and V. cholerae in the presence of B. thetaiotaomicron, an indole-producing commensal bacteria, ablated the enhancement of EPEC virulence. Together, these results suggest that microbiome compositions or diets that influence indole gut concentrations may differentially impact the virulence of pathogens and their ability to sense and respond to competing bacteria. |
| format | Article |
| id | doaj-art-6df5abfcd97c4f45a67766a762e06581 |
| institution | DOAJ |
| issn | 1949-0976 1949-0984 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
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| series | Gut Microbes |
| spelling | doaj-art-6df5abfcd97c4f45a67766a762e065812025-08-20T03:05:25ZengTaylor & Francis GroupGut Microbes1949-09761949-09842022-12-0114110.1080/19490976.2022.2138677Indole intercepts the communication between enteropathogenic E. coli and Vibrio choleraeOrna Gorelik0Alona Rogad1Lara Holoidovsky2Michael M. Meijler3Neta Sal-Man4The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, IsraelThe Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, IsraelDepartment of Chemistry, the National Institute for Biotechnology in the Negev Ben-Gurion University of the Negev, Be’er Sheva, IsraelDepartment of Chemistry, the National Institute for Biotechnology in the Negev Ben-Gurion University of the Negev, Be’er Sheva, IsraelThe Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, IsraelReported numbers of diarrheal samples exhibiting co-infections or multiple infections, with two or more infectious agents, are rising, likely due to advances in bacterial diagnostic techniques. Bacterial species detected in these samples include Vibrio cholerae (V. cholerae) and enteropathogenic Escherichia coli (EPEC), which infect the small intestine and are associated with high mortality rates. It has previously been reported that EPEC exhibit enhanced virulence in the presence of V. cholerae owing to their ability to sense and respond to elevated concentrations of cholera autoinducer 1 (CAI-1), which is the primary quorum-sensing (QS) molecule produced by V. cholerae. In this study, we examined this interspecies bacterial communication in the presence of indole, a major microbiome-derived metabolite found at high concentrations in the human gut. Interestingly, we discovered that although indole did not affect bacterial growth or CAI-1 production, it impaired the ability of EPEC to enhance its virulence activity in response to the presence of V. cholerae. Furthermore, the co-culture of EPEC and V. cholerae in the presence of B. thetaiotaomicron, an indole-producing commensal bacteria, ablated the enhancement of EPEC virulence. Together, these results suggest that microbiome compositions or diets that influence indole gut concentrations may differentially impact the virulence of pathogens and their ability to sense and respond to competing bacteria.https://www.tandfonline.com/doi/10.1080/19490976.2022.2138677Bacterial virulencebacterial communicationindoleautoinducerCAI-1EPEC |
| spellingShingle | Orna Gorelik Alona Rogad Lara Holoidovsky Michael M. Meijler Neta Sal-Man Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae Gut Microbes Bacterial virulence bacterial communication indole autoinducer CAI-1 EPEC |
| title | Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae |
| title_full | Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae |
| title_fullStr | Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae |
| title_full_unstemmed | Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae |
| title_short | Indole intercepts the communication between enteropathogenic E. coli and Vibrio cholerae |
| title_sort | indole intercepts the communication between enteropathogenic e coli and vibrio cholerae |
| topic | Bacterial virulence bacterial communication indole autoinducer CAI-1 EPEC |
| url | https://www.tandfonline.com/doi/10.1080/19490976.2022.2138677 |
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