Elevated interferon gamma expression in the central nervous system of tumour necrosis factor receptor 1-deficient mice with experimental autoimmune encephalomyelitis

Immunology. 2006 Aug;118(4):527-38. doi: 10.1111/j.1365-2567.2006.02395.x. Epub 2006 Jun 16.


Inflammation in the central nervous system (CNS) can be studied in experimental autoimmune encephalomyelitis (EAE). The proinflammatory cytokines interferon-gamma (IFN-gamma) and tumour necrosis factor (TNF) are implicated in EAE pathogenesis. Signals through the type 1 TNF receptor (TNFR1) are required for severe EAE to develop, whereas deficiency in IFN-gamma or its receptor result in more severe EAE. We investigated IFN-gamma expression in TNFR1-deficient (TNFR1-/-) mice. We describe here that there were more IFN-gamma-secreting T cells present in the CNS of TNFR1-/- mice during EAE compared to wild-type (WT) mice, despite that clinical symptoms were mild, with delayed onset. There was greater expression of IL-12/23p40 by antigen-presenting cells in these mice, and in vitro, TNFR1-/- antigen-presenting cells induced greater secretion of IFN-gamma but not interleukin (IL)-17 when cultured with primed T cells than did WT antigen presenting cells. TNFR1-/- mice with EAE had significantly higher expression of CXCL10 mRNA (but not CCL5 mRNA) in the CNS compared to WT mice with EAE. These data demonstrate that IFN-gamma expression is enhanced in the CNS of TNFR1-/- mice with EAE and suggest that IFN-gamma levels do not necessarily correlate with EAE severity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Encephalomyelitis, Autoimmune, Experimental / genetics
  • Encephalomyelitis, Autoimmune, Experimental / immunology*
  • Encephalomyelitis, Autoimmune, Experimental / microbiology
  • Gene Expression Regulation*
  • Interferon-gamma / analysis
  • Interferon-gamma / genetics*
  • Macrophages / immunology*
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Receptors, Tumor Necrosis Factor, Type I / analysis
  • Receptors, Tumor Necrosis Factor, Type I / genetics*
  • Reverse Transcriptase Polymerase Chain Reaction
  • Spinal Cord / immunology
  • T-Lymphocytes / immunology*


  • Receptors, Tumor Necrosis Factor, Type I
  • Interferon-gamma