Type 1 Interferons Induce Changes in Core Metabolism that Are Critical for Immune Function

Immunity. 2016 Jun 21;44(6):1325-36. doi: 10.1016/j.immuni.2016.06.006.

Abstract

Greater understanding of the complex host responses induced by type 1 interferon (IFN) cytokines could allow new therapeutic approaches for diseases in which these cytokines are implicated. We found that in response to the Toll-like receptor-9 agonist CpGA, plasmacytoid dendritic cells (pDC) produced type 1 IFNs, which, through an autocrine type 1 IFN receptor-dependent pathway, induced changes in cellular metabolism characterized by increased fatty acid oxidation (FAO) and oxidative phosphorylation (OXPHOS). Direct inhibition of FAO and of pathways that support this process, such as fatty acid synthesis, prevented full pDC activation. Type 1 IFNs also induced increased FAO and OXPHOS in non-hematopoietic cells and were found to be responsible for increased FAO and OXPHOS in virus-infected cells. Increased FAO and OXPHOS in response to type 1 IFNs was regulated by PPARα. Our findings reveal FAO, OXPHOS and PPARα as potential targets to therapeutically modulate downstream effects of type 1 IFNs.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, N.I.H., Extramural

MeSH terms

  • 3-Hydroxyacyl CoA Dehydrogenases / metabolism
  • Acetyl-CoA C-Acyltransferase / metabolism
  • Animals
  • Carbon-Carbon Double Bond Isomerases / metabolism
  • Cell Differentiation
  • Cells, Cultured
  • CpG Islands / immunology
  • Dendritic Cells / immunology*
  • Enoyl-CoA Hydratase / metabolism
  • Gene Expression Regulation
  • Immunity
  • Interferon Type I / metabolism*
  • Lipid Metabolism
  • Lymphocytic Choriomeningitis / immunology*
  • Lymphocytic choriomeningitis virus / immunology*
  • Mice
  • Mice, Inbred C57BL
  • Oligodeoxyribonucleotides / immunology
  • Oxidative Phosphorylation
  • PPAR alpha / metabolism*
  • Racemases and Epimerases / metabolism
  • Receptors, Interferon / metabolism
  • Signal Transduction
  • Toll-Like Receptor 9 / metabolism

Substances

  • Interferon Type I
  • Oligodeoxyribonucleotides
  • PPAR alpha
  • Receptors, Interferon
  • Toll-Like Receptor 9
  • fatty acid oxidation complex
  • 3-Hydroxyacyl CoA Dehydrogenases
  • Acetyl-CoA C-Acyltransferase
  • Enoyl-CoA Hydratase
  • Racemases and Epimerases
  • Carbon-Carbon Double Bond Isomerases