Bacterial metabolite interference with maturation of human monocyte-derived dendritic cells

Ornella Parolini, Marcus D. Säemann, Georg A. Böhmig, Peter Kelemen, Peter-Michael Krieger, Josef Neumüller, Katharina Knarr, Willibald Kammlander, Walter H. Hörl, Christos Diakos, Karl Stuhlmeier, Gerhard J. Zlabinger

Risultato della ricerca: Contributo in rivistaArticolo in rivista

48 Citazioni (Scopus)

Abstract

Dendritic cells (DC), the most potent APC, are central to antimicrobial immunity. Because of evolutionary pressure, it is reasonable that pathogens have evolved strategies to also subvert this host-defense mechanism. In the present study, we describe a novel way of bacterial interference with DC maturation. The bacterial metabolite n-butyrate, which occurs physiologically in high concentrations in the gastrointestinal tract and has well-known anti-inflammatory effects, is able to prevent LPS-induced maturation of DC resulting in a reduced capability to stimulate T cells. In particular, n-butyrate prevents homotypic DC clustering, inhibits IL-12 while sparing IL-10 production, and at the molecular level, blocks NF-kappa B translocation. These results demonstrate efficient targeting of DC function by a bacterial metabolite, which might explain the particular type of immune responsiveness in the presence of this bacterial agent as exemplified in the gastrointestinal tract.
Lingua originaleEnglish
pagine (da-a)238-246
Numero di pagine9
RivistaJournal of Leukocyte Biology
Volume71
Stato di pubblicazionePubblicato - 2002

Keywords

  • Adult
  • Bacteria
  • Butyrates
  • Cell Differentiation
  • Dendritic Cells
  • Humans
  • Immunity
  • Monocytes

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