期刊
CELL REPORTS
卷 14, 期 7, 页码 1761-1773出版社
CELL PRESS
DOI: 10.1016/j.celrep.2016.01.053
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资金
- Deutsche Forschungsgemeinschaft (DFG) [GA 2048/1-1, SFB877, A10, A1, A6, SCHE907/3-1]
- Forschungskommission of the Medical Faculty of the HHU Dusseldorf
- Cluster of Excellence Inflammation at Interfaces
- Ferring Pharmaceuticals A/S (Copenhagen)
Interleukin (IL)-11 has been shown to be a crucial factor for intestinal tumorigenesis, lung carcinomas, and asthma. IL-11 is thought to exclusively mediate its biological functions through cell-type-specific expression of the membrane-bound IL-11 receptor (IL-11R). Here, we show that the metalloprotease ADAM10, but not ADAM17, can release the IL-11R ectodomain. Chimeric proteins of the IL-11R and the IL-6 receptor (IL-6R) revealed that a small juxtamembrane portion is responsible for this substrate specificity of ADAM17. Furthermore, we show that the serine proteases neutrophil elastase and proteinase 3 can also cleave the IL-11R. The resulting soluble IL-11R (sIL-11R) is biologically active and binds IL-11 to activate cells. This IL-11 trans-signaling pathway can be inhibited specifically by the antiinflammatory therapeutic compound sgp130Fc. In conclusion, proteolysis of the IL-11R represents a molecular switch that controls the IL-11 transsignaling pathway and widens the number of cells that can be activated by IL-11.
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