T lymphocytes are required for protection of the vaginal mucosae and sensory ganglia of immune mice against reinfection with herpes simplex virus type 2

Gregg N. Milligan, David I. Bernstein, Nigel Bourne

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Abstract

Intravaginal inoculation of mice with an attenuated strain of herpes simplex virus type 2 (HSV-2) resulted in vigorous HSV-specific immune responses that protected against subsequent challenge with fully virulent HSV-2 strains. Even in the presence of high titers of HSV-specific Ab, T cell-dependent mechanisms were required for protection of the vaginal mucosae of HSV-immune mice and could be detected by 24 h after intravaginal reinoculation. Depletion of specific T cell subsets from HSV-immune mice before HSV-2 reinoculation demonstrated that CD4+ T cells were primarily responsible for this protection. Similarly, optimal protection of the sensory ganglia against reinfection with HSV-2 was dependent on the presence of T cells. Infectious HSV-2 was not detected in the sensory ganglia or spinal cord of HSV-immune mice depleted of only CD4+ or CD8+ T cells, suggesting that the T cell-mediated protection could be provided by either subset. Similarly, neutralization of IFN-γ during challenge of HSV-immune mice resulted in diminished protection of the vaginal mucosa, but not of the sensory ganglia. These results suggest that the ability to induce vigorous HSV-specific T cell responses is an important consideration in the design of vaccines to protect both the vaginal mucosa and sensory ganglia against HSV- 2.

Original languageEnglish (US)
Pages (from-to)6093-6100
Number of pages8
JournalJournal of Immunology
Volume160
Issue number12
StatePublished - Jun 15 1998

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ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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