Immunopathological basis of lymphocytic choriomeningitis virus-induced chorioretinitis and keratitis

Martin S Zinkernagel1, Beatrice Bolinger, Philippe Krebs

  • 1Research Department, Kantonal Hospital St. Gallen, Rorschacherstrasse 95, 9007 St. Gallen, Switzerland.

Journal of Virology
|October 24, 2008
PubMed

Insights

Lymphocytic choriomeningitis virus (LCMV) causes ocular disease, primarily chorioretinitis, dependent on CD8(+) T cells. Preventive vaccination strategies targeting antibodies and T cells show promise against LCMV-induced eye infections.

Area of Science:

  • Immunology
  • Virology
  • Ophthalmology

Background:

  • Lymphocytic choriomeningitis virus (LCMV) infection can cause central nervous system disease.
  • LCMV-associated ocular disease, including chorioretinitis and keratitis, is not well understood.
  • The immunopathological mechanisms of LCMV-induced eye disease require further investigation.

Purpose of the Study:

  • To investigate the immunopathological mechanisms of LCMV-induced ocular disease.
  • To determine the role of different LCMV strains in causing eye pathology.
  • To evaluate potential preventive strategies against LCMV-mediated ocular disease.

Main Methods:

  • Intraocular administration of LCMV strains (Armstrong, WE, Docile) in mice.
  • Time course analysis of ocular inflammation.
  • Assessment of LCMV-mediated ocular disease in T-cell-deficient mouse models.
  • Evaluation of topical immunosuppressive agents and passive immunization.
  • Analysis of pre-existing T-cell responses for protection.

Main Results:

  • Neurotropic LCMV strain Armstrong induced severe chorioretinitis and keratitis.
  • Viscerotropic strains WE and Docile caused less severe ocular disease.
  • LCMV-induced ocular disease was dependent on virus-specific CD8(+) T cells, with minimal CD4(+) T cell involvement.
  • Passive immunization and pre-existing T-cell immunity partially protected against ocular damage.

Conclusions:

  • LCMV-mediated ocular disease pathogenesis is primarily driven by CD8(+) T cells.
  • Antibody- and T-cell-based vaccination strategies may prevent LCMV-induced chorioretinitis.
  • Further research into LCMV-specific immune responses can inform therapeutic and prophylactic approaches.

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