Update on T cells in the virally infected brain: friends and foes.

Abstract:

PURPOSE OF REVIEW:The present review will outline neuroprotective and neurotoxic effects of central nervous system (CNS) infiltrating T cells during viral infections. Evidence demonstrating differential roles for antiviral effector and resident memory T-cell subsets in virologic control and immunopathology in the CNS will be discussed. Potential therapeutic targets emanating from a growing understanding of T-cell-initiated neuropathology that impacts learning and memory will also be delineated. RECENT FINDINGS:The critical role for T cells in preventing and clearing CNS infections became incontrovertible during the era of acquired immunodeficiency syndrome. Recent studies have further defined differential roles of T-cell subsets, including resident memory T cells (Trm), in antiviral immunity and, unexpectedly, in postinfectious cognitive dysfunction. Mechanisms of T-cell-mediated effects include differential innate immune signaling within neural cells that are virus-specific. SUMMARY:T-cell cytokines that are essential for cell-mediated virologic control during neurotropic viral infections have recently been identified as potential targets to prevent post-infection memory disorders. Further identification of T-cell subsets, their antigen specificity, and postinfection localization of Trm will enhance the efficacy of immunotherapies through minimization of immunopathology.

journal_name

Curr Opin Neurol

authors

Ai S,Klein RS

doi

10.1097/WCO.0000000000000825

subject

Has Abstract

pub_date

2020-06-01 00:00:00

pages

405-412

issue

3

eissn

1350-7540

issn

1473-6551

journal_volume

33

pub_type

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