AT-RvD1 modulates CCL-2 and CXCL-8 production and NF-κB, STAT-6, SOCS1, and SOCS3 expression on bronchial epithelial cells stimulated with IL-4

Biomed Res Int. 2015:2015:178369. doi: 10.1155/2015/178369. Epub 2015 May 5.

Abstract

Bronchial epithelial cells represent the first line of defense against microorganisms and allergens in the airways and play an important role in chronic inflammatory processes such as asthma. In an experimental model, both RvD1 and AT-RvD1, lipid mediators of inflammation resolution, ameliorated some of the most important phenotypes of experimental asthma. Here, we extend these results and demonstrate the effect of AT-RvD1 on bronchial epithelial cells (BEAS-2B) stimulated with IL-4. AT-RvD1 (100 nM) decreased both CCL2 and CXCL-8 production, in part by decreasing STAT6 and NF-κB pathways. Furthermore, the effects of AT-RvD1 were ALX/FRP2 receptor dependent, as the antagonist of this receptor (BOC1) reversed the inhibition of these chemokines by AT-RvD1. In addition, AT-RvD1 decreased SOCS1 and increased SOCS3 expression, which play important roles in Th1 and Th17 modulation, respectively. In conclusion, AT-RvD1 demonstrated significant effects on the IL-4-induced activation of bronchial epithelial cells and consequently the potential to modulate neutrophilic and eosinophilic airway inflammation in asthma. Taken together, these findings identify AT-RvD1 as a potential proresolving therapeutic agent for allergic responses in the airways.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Asthma / drug therapy
  • Asthma / immunology
  • Asthma / metabolism
  • Bronchi / drug effects*
  • Bronchi / immunology*
  • Bronchi / metabolism
  • Cell Line
  • Chemokine CCL2 / biosynthesis
  • Docosahexaenoic Acids / pharmacology*
  • Epithelial Cells / drug effects
  • Epithelial Cells / immunology
  • Epithelial Cells / metabolism
  • Gene Expression / drug effects
  • Humans
  • Interleukin-4 / immunology*
  • Interleukin-8 / biosynthesis
  • NF-kappa B / metabolism
  • STAT6 Transcription Factor / metabolism
  • Suppressor of Cytokine Signaling 1 Protein
  • Suppressor of Cytokine Signaling 3 Protein
  • Suppressor of Cytokine Signaling Proteins / genetics

Substances

  • CCL2 protein, human
  • CXCL8 protein, human
  • Chemokine CCL2
  • Interleukin-8
  • NF-kappa B
  • SOCS1 protein, human
  • SOCS3 protein, human
  • STAT6 Transcription Factor
  • STAT6 protein, human
  • Suppressor of Cytokine Signaling 1 Protein
  • Suppressor of Cytokine Signaling 3 Protein
  • Suppressor of Cytokine Signaling Proteins
  • resolvin D1
  • Interleukin-4
  • Docosahexaenoic Acids