| First Author | Allam R | Year | 2013 |
| Journal | Eur J Immunol | Volume | 43 |
| Issue | 12 | Pages | 3336-42 |
| PubMed ID | 23964013 | Mgi Jnum | J:205861 |
| Mgi Id | MGI:5546546 | Doi | 10.1002/eji.201243224 |
| Citation | Allam R, et al. (2013) Histones trigger sterile inflammation by activating the NLRP3 inflammasome. Eur J Immunol 43(12):3336-42 |
| abstractText | Sterile cell death mediated inflammation is linked to several pathological disorders and involves danger recognition of intracellular molecules released by necrotic cells that activate different groups of innate pattern recognition receptors. Toll-like receptors directly interact with their extrinsic or intrinsic agonists and induce multiple proinflammatory mediators. In contrast, the NLRP3 inflammasome is rather thought to represent a downstream element integrating various indirect stimuli into proteolytic cleavage of interleukin (IL)-1beta and IL-18. Here, we report that histones released from necrotic cells induce IL-1beta secretion in an NLRP3-ASC-caspase-1-dependent manner. Genetic deletion of NLRP3 in mice significantly attenuated histone-induced IL-1beta production and neutrophil recruitment. Furthermore, necrotic cells induced neutrophil recruitment, which was significantly reduced by histone-neutralizing antibodies or depleting extracellular histones via enzymatic degradation. These results identify cytosolic uptake of necrotic cell-derived histones as a triggering mechanism of sterile inflammation, which involves NLRP3 inflammasome activation and IL-1beta secretion via oxidative stress. |
