Rapid Preparation of a Plasma Membrane Fraction from Adipocytes and Muscle Cells: Application to Detection of Translocated Glucose Transporter 4 on the Plasma Membrane

概要

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The aim of this study was to establish a rapid preparation of plasma membrane from adipocytes and muscle cells to detect translocated glucose transporter (GLUT) 4. A plasma membrane fraction was prepared by sequential centrifugation with buffer containing detergents, and its purity was estimated by detecting insulin receptor β-subunit (IRβ). After insulin stimulus, GLUT4 translocation was observed in 3T3-L1 adipocytes and L6 myotubes. It was found that IRβ and GLUT4 levels on the plasma membrane decreased in adipose and muscle with intake of a 29% lard diet for 14 weeks. Hence, this method should be useful for rapid preparation of the plasma membrane fraction.
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