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Description
Biotin anti-mouse Lactadherin. Lactadherin, a novel adhesion molecule, also known as MFG-E8, is a widely distributed glycoprotein (~50 kD) that has been found in macrophages, dendritic cells, vascular smooth muscle cells, astrocytes, microglia, breast carcinioma cells, and also in breast milk and around blood vessels. Lactadherin contains an N-terminal EGF-like motif with an inserted RGD cell adhesion sequence; it also contains a C-terminal sequence sharing homology with the discoidin family of lectin domains, including the phospholipid-binding domains of blood clotting factors V and VIII. Lactadherin promotes RGD-dependent cell attachment of a variety of cell types, but most notably of cells that express the integrin heterodimer, alpha vβ3. The C1/C2 domain binds specifically to phosphatidylserine. Mounting evidence has shown that Lactadherin plays a far more important role than just protecting the newborn, a function originally identified. Lactadherin is anticoagulant by blocking phosphatidylserine-containing membrane sites for blood coagulation proteins. It is involved in cell death by its ability to recognize specifically phosphatidylserine exposed on apoptotic cells. Lactadherin is also crucial in VEGF-dependent neovascularization and has been identified as an important target for the modulation of neovascularization. In addition, Lactadherin was identified as a novel target for radioimmunotherapy in breast cancer, and is also important in the initiation and/or progression of Alzheimer's disease.