Human Epitopes Identified from Herpes Simplex Virus Tegument Protein VP11/12 (UL46) Recall Multifunctional Effector Memory CD4 + T EM Cells in Asymptomatic Individuals and Protect from Ocular Herpes Infection and Disease in “Humanized” HLA-DR Transgenic Mice

Abstract

We report that naturally protected HSV-1-seropositive asymptomatic individuals develop a higher frequency of antiviral effector memory CD4 + T EM cells specific to two immunodominant epitopes derived from the HSV-1 tegument protein VP11/12. Immunization of HLA-DR transgenic mice with a mixture of these two immunodominant CD4 + T cell epitopes induced a robust antiviral CD4 + T cell response in the cornea that was associated with protective immunity against ocular herpes. The emerging concept of developing an asymptomatic herpes vaccine that would boost effector memory CD4 + and CD8 + T EM cell responses is discussed.