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C-type lectin receptor LSECtin-mediated apoptotic cell clearance by macrophages directs intestinal repair in experimental colitis.
- Source :
- Proceedings of the National Academy of Sciences of the United States of America; 10/23/2018, Vol. 115 Issue 43, p11054-11059, 6p
- Publication Year :
- 2018
-
Abstract
- Epithelial barrier disruption is a major cause of inflammatory bowel disease (IBD),however, the cellular and molecular regulation of intestinal epithelial homeostasis remains largely undefined. Here, we show that the C-type lectin receptor LSECtin (Clec4g) on macrophages is required for protection against dextran sulfate sodiuminduced colitis. Mechanistically, LSECtin promotes apoptotic cell clearance by macrophages and induces the production of antiinflammatory/ tissue repair factors in an engulfment-dependent manner, which in turn stimulates epithelial cell proliferation. Deletion of LSECtin results in defective engulfment by colon macrophages, leading to aberrant proresolving factor production and impaired intestinal epithelium repair. Collectively, our findings suggest that LSECtindependent corpse clearance by macrophages can direct intestinal regeneration and maintenance of the mucosal barrier after injury. [ABSTRACT FROM AUTHOR]
- Subjects :
- LECTINS
MACROPHAGES
INFLAMMATORY bowel diseases
DEXTRAN sulfate
APOPTOSIS
Subjects
Details
- Language :
- English
- ISSN :
- 00278424
- Volume :
- 115
- Issue :
- 43
- Database :
- Complementary Index
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America
- Publication Type :
- Academic Journal
- Accession number :
- 132622480
- Full Text :
- https://doi.org/10.1073/pnas.1804094115