T cell memory. Resident memory CD8 T cells trigger protective innate and adaptive immune responses.
Science
; 346(6205): 98-101, 2014 Oct 03.
Article
em En
| MEDLINE
| ID: mdl-25170049
ABSTRACT
The pathogen recognition theory dictates that, upon viral infection, the innate immune system first detects microbial products and then responds by providing instructions to adaptive CD8 T cells. Here, we show in mice that tissue resident memory CD8 T cells (T(RM) cells), non-recirculating cells located at common sites of infection, can achieve near-sterilizing immunity against viral infections by reversing this flow of information. Upon antigen resensitization within the mouse female reproductive mucosae, CD8(+) T(RM) cells secrete cytokines that trigger rapid adaptive and innate immune responses, including local humoral responses, maturation of local dendritic cells, and activation of natural killer cells. This provided near-sterilizing immunity against an antigenically unrelated viral infection. Thus, CD8(+) T(RM) cells rapidly trigger an antiviral state by amplifying receptor-derived signals from previously encountered pathogens.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Viroses
/
Linfócitos T CD8-Positivos
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Imunidade Adaptativa
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Imunidade Inata
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Memória Imunológica
Limite:
Animals
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article