| First Author | Farrar CA | Year | 2016 |
| Journal | J Clin Invest | Volume | 126 |
| Issue | 5 | Pages | 1911-25 |
| PubMed ID | 27088797 | Mgi Jnum | J:234934 |
| Mgi Id | MGI:5792455 | Doi | 10.1172/JCI83000 |
| Citation | Farrar CA, et al. (2016) Collectin-11 detects stress-induced L-fucose pattern to trigger renal epithelial injury. J Clin Invest 126(5):1911-25 |
| abstractText | Physiochemical stress induces tissue injury as a result of the detection of abnormal molecular patterns by sensory molecules of the innate immune system. Here, we have described how the recently discovered C-type lectin collectin-11 (CL-11, also known as CL-K1 and encoded by COLEC11) recognizes an abnormal pattern of L-fucose on postischemic renal tubule cells and activates a destructive inflammatory response. We found that intrarenal expression of CL-11 rapidly increases in the postischemic period and colocalizes with complement deposited along the basolateral surface of the proximal renal tubule in association with L-fucose, the potential binding ligand for CL-11. Mice with either generalized or kidney-specific deficiency of CL-11 were strongly protected against loss of renal function and tubule injury due to reduced complement deposition. Ex vivo renal tubule cells showed a marked capacity for CL-11 binding that was induced by cell stress under hypoxic or hypothermic conditions and prevented by specific removal of L-fucose. Further analysis revealed that cell-bound CL-11 required the lectin complement pathway-associated protease MASP-2 to trigger complement deposition. Given these results, we conclude that lectin complement pathway activation triggered by ligand-CL-11 interaction in postischemic tissue is a potent source of acute kidney injury and is amenable to sugar-specific blockade. |
