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Updated: Jul 11, 2026

Extracellular Glucose Depletion as an Indirect Measure of Glucose Uptake in Cells and Tissues Ex Vivo
Published on: April 6, 2022
Osmotic regulation of cellular glucose uptake
Philippe Gual1, Teresa Gonzalez, Thierry Gremeaux
1INSERM U 568, University of Nice Sophia-Antipolis, Nice, France.
Abstract:
This chapter describes various approaches allowing the study of hyperosmolarity in the functions of 3T3-L1 adipocytes. Hyperosmolarity mimics insulin responses, such as glucose uptake and membrane ruffling, but also antagonizes these insulin effects, which can be evaluated in 3T3-L1 adipocytes. The molecular mechanisms of these effects can be also investigated by measuring the activation of different signaling pathways: (i) the phosphorylation of docking proteins on tyrosine and serine residues (serines 307 and 632), (ii) the phosphorylation of serine/threonine kinases, and (iii) the activation of phosphatidylinositol 3-kinase.
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