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To test the hypothesis that the hexosamine biosynthesis pathway (HBP) affects cytokine production, we studied IL-2 production by Jurkat cells in response to PHA. We found that the HBP activator glucosamine (GlcN), but not glucose (Glc), dose-dependently reduced IL-2 production. Importantly, GlcN blocked trafficking of a GFP-NFAT chimeric protein to the nucleus of stimulated transfectants. Not surprisingly,...
Neutrophils expend large amounts of energy to perform demanding cell functions. To better understand energy production and flow during cell activation, immunofluorescence microscopy was employed to determine the location of the key metabolic enzyme hexokinase during various conditions. Hexokinase is translocated from the neutrophil's cytosol to its periphery in response to N-formyl-methionyl-leucyl-phenylalanine...
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