Transgenic mice expressing human apoB100 and apoB48

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Abstract
Transgenic mice that express human apolipoprotein (apo)B have been developed by microinjecting fertilized mouse oocytes with an 80 kb genomic DNA fragment that encompasses the entire human APOB gene. In the transgenic mice expressing the largest amounts of human apoB, the concentration of human apoB100 in the plasma is nearly as high as the levels observed in normolipidemic humans (50 mg/dl). Virtually all of the human apoB100 in the transgenic plasma is located in the LDL fraction, resulting in substantially increased levels of LDL cholesterol. These human apoB-transgenic mice should be useful animal models for understanding various aspects of lipoprotein metabolism and for further delineating the role of LDL in atherogenesis.

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