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Dendritic cells maximize the memory CD8 T cell response to infection.

ABSTRACT: Costimulatory signals from dendritic cells (DCs) are required for naive T cells to respond to antigenic stimulation. To what extent DCs reactivate memory T cells during recall responses is not known. Here, an in vivo depletion system has been used to analyze the role of DCs in reactivating CD8 memory T cells during recall responses to three different microbial infections. We show a profound decrease in the numbers of responding memory CD8 T cells in both lymphoid and nonlymphoid tissues during the recall responses to infection with vesicular stomatitis virus, Listeria monocytogenes (Lm), or influenza virus. These data show that interaction with DCs is a major mechanism driving T cell reactivation in vivo, even during a tissue-specific infection of the respiratory tract.

SUBMITTER: Zammit DJ

PROVIDER: S-EPMC2857562 | biostudies-literature | 2005 May

REPOSITORIES: biostudies-literature

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Dendritic cells maximize the memory CD8 T cell response to infection.

Zammit David J DJ Cauley Linda S LS Pham Quynh-Mai QM Lefrançois Leo L

Immunity 20050501 5

Costimulatory signals from dendritic cells (DCs) are required for naive T cells to respond to antigenic stimulation. To what extent DCs reactivate memory T cells during recall responses is not known. Here, an in vivo depletion system has been used to analyze the role of DCs in reactivating CD8 memory T cells during recall responses to three different microbial infections. We show a profound decrease in the numbers of responding memory CD8 T cells in both lymphoid and nonlymphoid tissues during t ...[more]

PMID: 15894274

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