Impact of CD4+T lymphocytes on the cellular and molecular milieu of the vaginal mucosa following HSV-2 challenge of immune guinea pigs
VIROLOGY(2023)
摘要
CD4+ and CD8+ tissue resident memory cells (TRM) express many shared anti-viral activities upon re-exposure to virus. CD4+ T cells were depleted from HSV-immune guinea pigs to identify CD4-dependent functions in the vaginal mucosa following HSV-2 challenge. The incidence of animals shedding HSV-2 fell rapidly after challenge in control animals but remained significantly higher through day four post infection in CD4-depleted animals. Genes encoding CD14, IFN-gamma, CCL2, and CCL5 were up-regulated in the vaginal mucosa of both groups following challenge. However, significantly higher expression of CD107b, IL-15, and TLR9 but lower expression of CD20, IL-21, and CCL5 was detected in CD4-depleted-compared to control-treated animals. Further, antigen stimulation of CD4+ TRM increased the expression of IFN-gamma, IL-2, IL-21, IL-17A, and CCL5. The impact of these gene expression patterns on the recruitment and maintenance of the cellular milieu of the vaginal mucosa upon virus challenge is discussed.
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关键词
HSV-2,Virus shedding,CD4+T lymphocyte,Guinea pig,Vaginal mucosa,Cytokine,Chemokine
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