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Human CD4+ CD25 high cells suppress proliferative memory lymphocyte responses to herpes simplex virus type 2
George A Diaz1, David M Koelle
1Department of Medicine, University of Washington, Seattle, Washington 98195, USA.
Abstract:
Lymphocytes with the regulatory CD4+ CD25+ phenotype frequently suppress memory T-cell responses. Murine herpes simplex virus type 1 (HSV-1) models have shown that CD4+ CD25+ cells can limit immunity-mediated corneal damage but slow viral clearance. We investigated the effect of CD4+ CD25+ cells from healthy HSV-2-infected humans on recall proliferative (CD4) responses to HSV-2. Depletion and reconstitution experiments were consistent with a suppressive effect of autologous blood-derived CD4+ CD25+ cells for whole HSV-2 antigen. Regulatory T cells may modulate human CD4 memory responses to HSV-2 and influence their antiviral and inflammatory functions.
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