Abstract
The mammalian enteropathogen Yersinia enterocolitica produces two main N-acylhomoserine lactones (AHLs) involved in Quorum Sensing (QS)-mediated infection processes, such as virulence, biofilm maturation and motility. Ellagitannin (ET)-rich fruits exhibit anti-QS activity but in vivo effects against intestinal pathogens may be associated to the ETs gut microbiota derived metabolites, urolithin-A (Uro-A) and urolithin-B (Uro-B). In this work we show that urolithins, at concentrations achievable in the intestine through the diet, reduce the levels of N-hexanoyl-l-homoserine lactone (C6-HSL) and N-(3-oxo-hexanoyl)-l-homoserine lactone (3-oxo-C6-HSL) in Y. enterocolitica and inhibit QS-associated biofilm maturation and swimming motility. These inhibitory effects were not associated to downregulation of the expression of some of the genes involved in the synthesis of AHLs (yenI and yenR) or in motility (flhDC, fliA, fleB). Our results suggest that urolithins may exert antipathogenic effects in the gut against Y. enterocolitica and highlight the need to investigate the antipathogenic in vivo properties of plant derived metabolites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
