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Mechanisms of cell signaling by the scavenger receptor CD36: implications in atherosclerosis and thrombosis Silverstein RL; Li W; Park YM; Rahaman SOTrans Am Clin Climatol Assoc 2010[]; 121 (ä): 206-20CD36 is a multifunctional membrane receptor present on mononuclear phagocytes, platelets, and other cells that serves as a scavenger receptor for oxidized phospholipids, apoptotic cells and certain microbial pathogens. On macrophages, CD36 interaction with oxidized LDL (oxLDL) triggers a signaling response that is pro-inflammatory and pro-atherogenic. The signaling pathway involves activation of src-family kinases, MAP kinases, and Vav family guanine nucleotide exchange factors and results in ligand internalization, foam cell formation and inhibition of migration. On platelets, CD36 interaction with oxLDL and cell-derived microparticles transduces intracellular signals that render them more reactive to low concentrations of classical agonists. In vitro studies and in vivo experiments in CD36 null mice have revealed an important mechanistic role for CD36 in atherosclerosis and thrombosis. Identification of the precise CD36 signaling pathways in specific cells elicited in response to specific ligands may yield novel targets for drug development in athero-thrombotic disorders.|Animals[MESH]|Atherosclerosis/*etiology/pathology/physiopathology[MESH]|Blood Platelets/physiology[MESH]|CD36 Antigens/deficiency/genetics/*physiology[MESH]|Cell-Derived Microparticles/physiology[MESH]|Cytoskeleton/physiology[MESH]|Foam Cells/pathology/physiology[MESH]|Hemostasis/physiology[MESH]|Humans[MESH]|In Vitro Techniques[MESH]|Lipoproteins, LDL/metabolism[MESH]|Macrophages/pathology/physiology[MESH]|Mice[MESH]|Mice, Knockout[MESH]|Models, Biological[MESH]|Plaque, Atherosclerotic/pathology[MESH]|Signal Transduction/physiology[MESH]|Thrombosis/*etiology/pathology/physiopathology[MESH] |
