期刊
JOURNAL OF IMMUNOLOGY
卷 184, 期 6, 页码 2756-2760出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.0904013
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资金
- Deutsche Forschungsgemeinschaft [SFB796, TP B6, SFB576, SFB643, FOR832]
- European Union [LSHP-CT-2003-503367]
- Deutsche Krebshilfe
- Wellcome Trust
- National Health and Medical Research Council, Australia [455947, 597452, 481945]
The mycobacterial cord factor trehalose-6,6-dimycolate (TDM) and its synthetic analog trehalose-6,6-dibehenate (TDB) are potent adjuvants for Th1/Th17 vaccination that activate Syk-Card9 signaling in APCs. In this study, we have further investigated the molecular mechanism of innate immune activation by TDM and TDB. The Syk-coupling adapter protein FcR gamma was essential for macrophage activation and Th17 adjuvanticity. The FcR gamma-associated C-type lectin receptor Mincle was expressed in macrophages and upregulated by TDM and TDB. Recombinant Mincle-Fc fusion protein specifically bound to the glycolipids. Genetic ablation or Mincle abolished TDM/TDB-induced macrophage activation and induction of T cell immune responses to a tuberculosis subunit vaccine. Macrophages lacking Mincle or FcR gamma were impaired in the inflammatory response to Mycobacterium bovis bacillus Calmette-Guerin. These results establish that Mincle is a key receptor for the mycobacterial cord factor and controls the Th1/Th17 adjuvanticity of TDM and TDB. The Journal of Immunology, 2010, 184: 2756-2760.
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