IFN-gamma-producing gamma delta T cells help control murine West Nile virus infection

J Immunol. 2003 Sep 1;171(5):2524-31. doi: 10.4049/jimmunol.171.5.2524.

Abstract

West Nile (WN) virus causes fatal meningoencephalitis in laboratory mice, thereby partially mimicking human disease. Using this model, we have demonstrated that mice deficient in gammadelta T cells are more susceptible to WN virus infection. TCRdelta(-/-) mice have elevated viral loads and greater dissemination of the pathogen to the CNS. In wild-type mice, gammadelta T cells expanded significantly during WN virus infection, produced IFN-gamma in ex vivo assays, and enhanced perforin expression by splenic T cells. Adoptive transfer of gammadelta T cells to TCRdelta(-/-) mice reduced the susceptibility of these mice to WN virus, and this effect was primarily due to IFN-gamma-producing gammadelta T cells. These data demonstrate a distinct role for gammadelta T cells in the control of and prevention of mortality from murine WN virus infection.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adoptive Transfer
  • Animals
  • Blood / immunology
  • Blood / virology
  • Cell Division / genetics
  • Cell Division / immunology
  • Cells, Cultured
  • Cytotoxicity, Immunologic / genetics
  • Encephalitis, Viral / genetics
  • Encephalitis, Viral / immunology
  • Encephalitis, Viral / prevention & control
  • Encephalitis, Viral / virology
  • Female
  • Genes, T-Cell Receptor beta / genetics
  • Genes, T-Cell Receptor delta / genetics
  • Genetic Predisposition to Disease
  • Interferon-gamma / biosynthesis*
  • Interferon-gamma / physiology
  • Lymphoid Tissue / immunology
  • Lymphoid Tissue / virology
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Receptors, Antigen, T-Cell, alpha-beta / deficiency
  • Receptors, Antigen, T-Cell, alpha-beta / genetics
  • Receptors, Antigen, T-Cell, gamma-delta / deficiency
  • Receptors, Antigen, T-Cell, gamma-delta / genetics
  • Receptors, Antigen, T-Cell, gamma-delta / physiology*
  • Severity of Illness Index
  • T-Lymphocyte Subsets / immunology*
  • T-Lymphocyte Subsets / metabolism*
  • T-Lymphocyte Subsets / pathology
  • T-Lymphocyte Subsets / transplantation
  • Viral Load
  • West Nile Fever / genetics
  • West Nile Fever / immunology
  • West Nile Fever / prevention & control*
  • West Nile Fever / virology
  • West Nile virus / immunology*

Substances

  • Receptors, Antigen, T-Cell, alpha-beta
  • Receptors, Antigen, T-Cell, gamma-delta
  • Interferon-gamma