IL-21-mediated non-canonical pathway for IL-1ß production in conventional dendritic cells.
Nat Commun
; 6: 7988, 2015 Aug 13.
Article
em En
| MEDLINE
| ID: mdl-26269257
ABSTRACT
The canonical pathway for IL-1ß production requires TLR-mediated NF-κB-dependent Il1b gene induction, followed by caspase-containing inflammasome-mediated processing of pro-IL-1ß. Here we show that IL-21 unexpectedly induces IL-1ß production in conventional dendritic cells (cDCs) via a STAT3-dependent but NF-κB-independent pathway. IL-21 does not induce Il1b expression in CD4(+) T cells, with differential histone marks present in these cells versus cDCs. IL-21-induced IL-1ß processing in cDCs does not require caspase-1 or caspase-8 but depends on IL-21-mediated death and activation of serine protease(s). Moreover, STAT3-dependent IL-1ß expression in cDCs at least partially explains the IL-21-mediated pathologic response occurring during infection with pneumonia virus of mice. These results demonstrate lineage-restricted IL-21-induced IL-1ß via a non-canonical pathway and provide evidence for its importance in vivo.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Células Dendríticas
/
Regulação da Expressão Gênica
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Interleucinas
/
Interleucina-1beta
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article