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Front Microbiol. 2016 Jun 08;7:864. doi: 10.3389/fmicb.2016.00864. eCollection 2016.

Anti-viral Effect of Bifidobacterium adolescentis against Noroviruses.

Frontiers in microbiology

Dan Li, Adrien Breiman, Jacques le Pendu, Mieke Uyttendaele

Affiliations

  1. Laboratory of Food Microbiology and Food Preservation, Faculty of Bioscience Engineering, Ghent University Ghent, Belgium.
  2. UMR 892, Institut National de la Santé et de la Recherche MédicaleNantes, France; UMR 6299, Centre National de la Recherche ScientifiqueNantes, France; Faculty of Medicine, University of NantesNantes, France; Nantes University HospitalNantes, France.
  3. UMR 892, Institut National de la Santé et de la Recherche MédicaleNantes, France; UMR 6299, Centre National de la Recherche ScientifiqueNantes, France; Faculty of Medicine, University of NantesNantes, France.

PMID: 27375585 PMCID: PMC4896916 DOI: 10.3389/fmicb.2016.00864

Abstract

This study aims to investigate the effect of Bifidobacterium adolescentis against noroviruses (NoVs). Murine norovirus-1 (MNV-1) used as a surrogate was detected by plaque assay and RT-qPCR. Human NoV virus like particles (VLPs) were detected by cell-binding assay. It was shown that the presence of B. adolescentis could inhibit the multiplication of MNV-1 on RAW 264.7 cells within 48 h of co-incubation period at 37°C. This inhibition did not occur at the viral binding stage, as no difference was observed in MNV-1 genomic copies collected from washed RAW 264.7 cells without and with B. adolescentis after co-incubation for 1 h at room temperature. Meanwhile, the presence of B. adolescentis decreased the binding of human NoV GI.1 VLPs to both Caco-2 cells and HT-29 cells, while no reduction was induced for the binding of human NoV GII.4 VLPs to Caco-2 cells.

Keywords: Bifidobacterium adolescentis; Norovirus; mechanisms; probiotics

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