T Cell Receptor–γ/δ Cells Protect Mice from Herpes Simplex Virus Type 1–induced Lethal Encephalitis

Author:

Sciammas Roger1,Kodukula P.1,Tang Q.1,Hendricks R.L.1,Bluestone J.A.1

Affiliation:

1. From the Ben May Institute for Cancer Research, Department of Pathology and Committee on Immunology, University of Chicago, Chicago, Illinois 60637; and the Department of Ophthalmology Visual Sciences and Department of Pathology, University of Illinois at Chicago, Chicago, Illinois 60612

Abstract

Increased numbers of T cell receptor (TCR)-γ/δ cells have been observed in animal models of influenza and sendai virus infections, as well as in patients infected with human immunodeficiency virus and herpes simplex virus type 1 (HSV-1). However, a direct role for TCR-γ/δ cells in protective immunity for pathogenic viral infection has not been demonstrated. To define the role of TCR-γ/δ cells in anti–HSV-1 immunity, TCR-α−/− mice treated with anti– TCR-γ/δ monoclonal antibodies or TCR-γ/δ × TCR-α/β double-deficient mice were infected with HSV-1 by footpad or ocular routes of infection. In both models of HSV-1 infection, TCR-γ/δ cells limited severe HSV-1–induced epithelial lesions and greatly reduced mortality by preventing the development of lethal viral encephalitis. The observed protection resulted from TCR-γ/δ cell–mediated arrest of both viral replication and neurovirulence. The demonstration that TCR-γ/δ cells play an important protective role in murine HSV-1 infections supports their potential contribution to the immune responses in human HSV-1 infection. Thus, this study demonstrates that TCR-γ/δ cells may play an important regulatory role in human HSV-1 infections.

Publisher

Rockefeller University Press

Subject

Immunology,Immunology and Allergy

Reference41 articles.

1. The role of T cell immunity in control of herpes simplex virus;Schmid;Curr Top Microbiol Immunol,1992

2. TCR γδ cells: a specialized T-cell subset in the immune system;Bluestone;Annu Rev Cell Dev Biol,1995

3. Gamma/delta cells;Haas;Annu Rev Immunol,1993

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