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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nat+Immunol 2015 ; 16 (9): 970-9 Nephropedia Template TP
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TH17 cells promote microbial killing and innate immune sensing of DNA via interleukin 26 #MMPMID26168081
Meller S; Domizio JD; Voo KS; Friedrich HC; Chamilos G; Ganguly D; Conrad C; Gregorio J; Roy DL; Roger T; Ladbury JE; Homey B; Watowich S; Modlin RL; Kontoyiannis DP; Liu YJ; Arold ST; Gilliet M
Nat Immunol 2015[Sep]; 16 (9): 970-9 PMID26168081show ga
Interleukin 17?producing helper T cells (TH17 cells) have a major role in protection against infections and in mediating autoimmune diseases, yet the mechanisms involved are incompletely understood. We found that interleukin 26 (IL-26), a human TH17 cell?derived cytokine, is a cationic amphipathic protein that kills extracellular bacteria via membrane-pore formation. Furthermore, TH17 cell?derived IL-26 formed complexes with bacterial DNA and self-DNA released by dying bacteria and host cells. The resulting IL-26?DNA complexes triggered the production of type I interferon by plasmacytoid dendritic cells via activation of Toll-like receptor 9, but independently of the IL-26 receptor. These findings provide insights into the potent antimicrobial and proinflammatory function of TH17 cells by showing that IL-26 is a natural human antimicrobial that promotes immune sensing of bacterial and host cell death.