engleski

CD4 T cells are required for maintenance of CD8 TRM cells and virus control in the brain of MCMV-infected newborn mice

Cytomegalovirus (CMV) infection is a significant public health problem. Congenital CMV infection is a leading infectious cause of long-term neurodevelopmental sequelae, including mental retardation and sensorineural hearing loss. Immune protection against mouse cytomegalovirus (MCMV) is primarily mediated by NK cells and CD8+ T cells, while CD4+ T cells are not needed for control of MCMV in majority of organs in immunocompetent adult mice. Here, we set out to determine the role of CD4+ T cells upon MCMV infection of newborn mice. We provide evidence that CD4+ T cells are essential for clearance of MCMV infection in brain of neonatal mice and for prevention of recurrence of latent MCMV. In addition, we provide evidence that CD4+ T cells are required for induction and maintenance of tissue- resident memory CD8+ T cells in the brain of mice perinatally infected with MCMV.

Mouse cytomegalovirus ; Tissue-resident memory T cells ; Brain pathology ; CD4 T cells ; Congenital CMV infection

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