Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.

Cranberry-derived compounds, including a fraction known as proanthocyanidins (PACs) exhibit anti-microbial, anti-infective, and anti-adhesive properties against a number of disease-causing organisms. In this study, the effect of cranberry proanthocyanidins (CPACs) on the infection of epithelial cell...

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Autores principales:	Kevin Harmidy, Nathalie Tufenkji, Samantha Gruenheid
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/30e2f3c1da1d409fac5d05ae2062d287
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spelling	oai:doaj.org-article:30e2f3c1da1d409fac5d05ae2062d2872021-11-18T07:34:55ZPerturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.1932-620310.1371/journal.pone.0027267https://doaj.org/article/30e2f3c1da1d409fac5d05ae2062d2872011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22076143/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Cranberry-derived compounds, including a fraction known as proanthocyanidins (PACs) exhibit anti-microbial, anti-infective, and anti-adhesive properties against a number of disease-causing organisms. In this study, the effect of cranberry proanthocyanidins (CPACs) on the infection of epithelial cells by two enteric bacterial pathogens, enteropathogenic Escherichia coli (EPEC) and Salmonella Typhimurium was investigated. Immunofluorescence data showed that actin pedestal formation, required for infection by enteropathogenic Escherichia coli (EPEC), was disrupted in the presence of CPACs. In addition, invasion of HeLa cells by Salmonella Typhimurium was significantly reduced, as verified by gentamicin protection assay and immunofluorescence. CPACs had no effect on bacterial growth, nor any detectable effect on the production of bacterial effector proteins of the type III secretion system. Furthermore, CPACs did not affect the viability of host cells. Interestingly, we found that CPACs had a potent and dose-dependent effect on the host cell cytoskeleton that was evident even in uninfected cells. CPACs inhibited the phagocytosis of inert particles by a macrophage cell line, providing further evidence that actin-mediated host cell functions are disrupted in the presence of cranberry CPACs. Thus, although CPAC treatment inhibited Salmonella invasion and EPEC pedestal formation, our results suggest that this is likely primarily because of the perturbation of the host cell cytoskeleton by CPACs rather than an effect on bacterial virulence itself. These findings have significant implications for the interpretation of experiments on the effects of CPACs on bacteria-host cell interactions.Kevin HarmidyNathalie TufenkjiSamantha GruenheidPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 11, p e27267 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kevin Harmidy Nathalie Tufenkji Samantha Gruenheid Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
description	Cranberry-derived compounds, including a fraction known as proanthocyanidins (PACs) exhibit anti-microbial, anti-infective, and anti-adhesive properties against a number of disease-causing organisms. In this study, the effect of cranberry proanthocyanidins (CPACs) on the infection of epithelial cells by two enteric bacterial pathogens, enteropathogenic Escherichia coli (EPEC) and Salmonella Typhimurium was investigated. Immunofluorescence data showed that actin pedestal formation, required for infection by enteropathogenic Escherichia coli (EPEC), was disrupted in the presence of CPACs. In addition, invasion of HeLa cells by Salmonella Typhimurium was significantly reduced, as verified by gentamicin protection assay and immunofluorescence. CPACs had no effect on bacterial growth, nor any detectable effect on the production of bacterial effector proteins of the type III secretion system. Furthermore, CPACs did not affect the viability of host cells. Interestingly, we found that CPACs had a potent and dose-dependent effect on the host cell cytoskeleton that was evident even in uninfected cells. CPACs inhibited the phagocytosis of inert particles by a macrophage cell line, providing further evidence that actin-mediated host cell functions are disrupted in the presence of cranberry CPACs. Thus, although CPAC treatment inhibited Salmonella invasion and EPEC pedestal formation, our results suggest that this is likely primarily because of the perturbation of the host cell cytoskeleton by CPACs rather than an effect on bacterial virulence itself. These findings have significant implications for the interpretation of experiments on the effects of CPACs on bacteria-host cell interactions.
format	article
author	Kevin Harmidy Nathalie Tufenkji Samantha Gruenheid
author_facet	Kevin Harmidy Nathalie Tufenkji Samantha Gruenheid
author_sort	Kevin Harmidy
title	Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
title_short	Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
title_full	Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
title_fullStr	Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
title_full_unstemmed	Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
title_sort	perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/30e2f3c1da1d409fac5d05ae2062d287
work_keys_str_mv	AT kevinharmidy perturbationofhostcellcytoskeletonbycranberryproanthocyanidinsandtheireffectonentericinfections AT nathalietufenkji perturbationofhostcellcytoskeletonbycranberryproanthocyanidinsandtheireffectonentericinfections AT samanthagruenheid perturbationofhostcellcytoskeletonbycranberryproanthocyanidinsandtheireffectonentericinfections
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Perturbation of host cell cytoskeleton by cranberry proanthocyanidins and their effect on enteric infections.

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