Immune effects of beta-glucan are determined by combined effects on Dectin-1, TLR2, 4 and 5

Pochanart Kanjan*, Neha M. Sahasrabudhe, Bart J. de Haan, Paul de Vos

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)

Abstract

Particulate beta-glucans enhanced NF-kappa B expression in cell-lines co-expressing Dectin-1A-TLR4 and Dectin1B-TLR4, while soluble beta-glucans only synergistically acted on Dectin-IA-TLR4. This was different with Dectin-1 co-expressing TLR2 and TLR5, which inhibited activation after particulate and soluble beta-glucan stimulation. The co-acting effect of extracellular TLR2, TLR4 and TLR5 and Dectin-1 by particulate and soluble beta-glucan on cytokine production was confirmed in THP-1 macrophages. Dectin-1 activation by particulate beta-glucans during TLR2 and TLR4 but not TLR5 blocking was shown to enhance the pro inflammatory cytokines IL-6, IL-8 and TNF-alpha in THP-1 macrophages. This effect was stronger with particulate than with soluble beta-glucan. The data demonstrate that beta-glucans is an immune regulatory ligand for TLR2 and TLR4. (C) 2017 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)433-440
Number of pages8
JournalJournal of Functional Foods
Volume37
DOIs
Publication statusPublished - Oct-2017

Keywords

  • Dietary fiber
  • beta-glucan
  • Dectin-1
  • TLRs
  • THP-1 macrophage
  • RECEPTOR DECTIN-1
  • ACTIVATION
  • RECOGNITION
  • MACROPHAGES
  • PATHWAY
  • IDENTIFICATION
  • MODULATION
  • INDUCTION
  • BACTERIA
  • LECTIN

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