CTL express lytic proteins that mediate the cytolysis of virus-infected cells. In this study, cytolytic transcriptional profiles were determined for individual CTL responding to influenza A virus and HSV-1. During acute infection, influenza-specific CTL in the spleen and respiratory airways displayed highly activated cytolytic profiles, as did HSV-1-specific CTL localized in the spleen, skin, and dorsal root ganglia (DRG). In contrast, memory CTL dramatically down-regulated cytolytic molecule transcription. This occurred for both lymphoid (spleen) and tissue-resident (skin and/or lung) memory CTL. In contrast, HSV-1-specific CTL localized in the dorsal root ganglia in the presence latent HSV-1 Ag did not down-regulate cytolytic molecule transcription. Therefore, both lymphoid and tissue-resident memory CTL down-regulate cytolytic molecule transcription following virus clearance unless localized Ag is present.
Cutting Edge: Tissue-Resident Memory CTL Down-Regulate Cytolytic Molecule Expression following Virus Clearance. Publishing Authors By Initials
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Grant and Affiliation Information for Cutting Edge: Tissue-Resident Memory CTL Down-Regulate Cytolytic Molecule Expression following Virus Clearance.
AFFILIATION: Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria, Australia.
Country: United States
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MEDLINETA: J Immunol
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