期刊
FOOD CHEMISTRY
卷 132, 期 3, 页码 1465-1474出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.12.003
关键词
Cell-cell communication; N-Acylhomoserine lactones; Plant polyphenols; Quorum Quenching; LC-MS/MS spectrometry; Microbial infection
资金
- CICYT [BFU2007-60576]
- Fundacion Seneca de la Region de Murcia (Grupo de Excelencia) [GERM 06,04486]
- European Community [244956]
- CSIC (Spain)
- Fundacion Seneca de la Region de Murcia
- [Consolider Ingenio 2010-Fun-C-Food CSD2007-0063]
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-t-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. (C) 2011 Elsevier Ltd. All rights reserved.
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