Diagenode

Legionella pneumophila modulates macrophage functions through epigenetic reprogramming via the C-type lectin receptor Mincle


Stegmann F. et al.

Legionella pneumophila is a pathogen which can lead to a severe form of pneumonia in humans known as Legionnaires disease after replication in alveolar macrophages. Viable L. pneumophila actively secrete effector molecules to modulate the host’s immune response. Here, we report that L. pneumophila-derived factors reprogram macrophages into a tolerogenic state, a process to which the C-type lectin receptor Mincle (CLEC4E) markedly contributes. The underlying epigenetic state is characterized by increases of the closing mark H3K9me3 and decreases of the opening mark H3K4me3, subsequently leading to the reduced secretion of the cytokines TNF, IL-6, IL-12, the production of reactive oxygen species, and cell-surface expression of MHC-II and CD80 upon re-stimulation. In summary, these findings provide important implications for our understanding of Legionellosis and the contribution of Mincle to reprogramming of macrophages by L. pneumophila.

Tags
Antibody

Share this article

Published
September, 2024

Source

Products used in this publication

  • Histone-Deacetylase-polyclonal-antibody-diagenode
    C15210016
    H3K27ac monoclonal antibody
  • cut and tag antibody icon
    C15410003-50
    H3K4me3 polyclonal antibody
  • Histone-Deacetylase-polyclonal-antibody-diagenode
    C15210014
    H3K9me3 monoclonal antibody
  • Mouse IgG
    C15410206
    Rabbit IgG

       Site map   |   Contact us   |   Conditions of sales   |   Conditions of purchase   |   Privacy policy