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2019-08-10

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cc-by-nc-nd (c) Díaz-Garrido, Natalia et al., 2019
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/164245

Membrane vesicles from the probiotic Nissle 1917 and gut resident Escherichia coli strains distinctly modulate human dendritic cells and subsequent T cell responses

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https://doi.org/10.1016/j.jff.2019.103495

Abstract

Extracellular membrane vesicles (MVs) released by gut microbiota are key players in the communication with the host. The aim of this study was to evaluate the immunomodulatory properties of MVs from the probiotic E. coli Nissle 1917 (EcN) in terms of DC-derived adaptive immune responses and to compare the effects with those elicited by commensal E. coli. The effects of MVs were analysed in monocyte-derived DCs by measuring cytokine expression and the ability of activated-DCs to differentiate CD4+ T cells towards specific effector subsets. EcN MVs derived intricate Th1/Th2/Th17/Th22/Treg responses consistent with the beneficial effects of this probiotic. Th2/Th17/Th22 responses were common to commensal E. coli-derived vesicles but specific differences were observed for Th1 and Treg responses. Since MVs activate DCs in a strain-specific manner, probiotic-derived MVs could be explored as a safe (bacteria-free) strategy to develop new functional food ingredients targeting gut microbiota balance or intestinal inflammation.

Subject

Escheríchia coli, Microbiota intestinal, Cèl·lules dendrítiques, Probiòtics, Tracte gastrointestinal

Subject (English)

Escherichia coli, Gastrointestinal microbiome, Dendritic cells, Probiotics, Gastrointestinal system

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Articles publicats en revistes (Bioquímica i Fisiologia)

Citation

DÍAZ GARRIDO, Natalia, et al. Membrane vesicles from the probiotic Nissle 1917 and gut resident Escherichia coli strains distinctly modulate human dendritic cells and subsequent T cell responses. Journal of Functional Foods. 2019. Vol. 61, num. 103495. ISSN 1756-4646. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/164245

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