Apoptotic cells are swiftly engulfed by macrophages and immature dendritic cells. Inefficient clearance of apoptotic cells has been implicated as a cause of inflammation and autoimmune diseases. Milk fat globule-EGF factor 8 (MFG-E8) and developmental endothelial locus-1 (Del-1) are glycoproteins secreted from macrophages that pass apoptotic cells to phagocytes. MFG-E8, but not Del-1, is expressed in the tingible-body macrophages at the germinal centers of the second lymphoid tissues. MFG-E8-deficient mice carry many unengulfed apoptotic cells in the germinal centers of the spleen, and develop a lupus-like autoimmune disease. In this review, we discuss the importance of the MFG-E8-mediated clearance of apoptotic cells in the prevention of autoimmune diseases.
|Number of pages||11|
|Journal||Current directions in autoimmunity|
|Publication status||Published - 2006|
All Science Journal Classification (ASJC) codes
- Immunology and Allergy
- Biochemistry, Genetics and Molecular Biology(all)