PMID: 11906001Mar 22, 2002Paper

Glucose deprivation and hypoxia increase the expression of the GLUT1 glucose transporter via a specific mRNA cis-acting regulatory element

Journal of Neurochemistry
R J Boado, W M Pardridge

Abstract

The expression of the glucose transporter type-1 (GLUT1) gene is up-regulated in hypoxia and glucose deprivation. A 10 nucleotide (nt) cis-acting regulatory element (CAE), which is located within nt 2181-2190 of the GLUT1 3'-untranslated region (CAE2181-2190), increases the expression of a GLUT1-luciferase reporter gene and decreases its mRNA decay. The present study investigated the role of the GLUT1 CAE2181-2190 in glucose deprivation and hypoxia using stable transfectants. Glucose and O2 deprivation produced a marked increase in the expression of the GLUT1 reporter gene carrying the CAE2181-2190, and this effect was additive. Glucose deprivation and/or hypoxia induced no significant changes in the expression of the reporter gene wherein the GLUT1 CAE2181-2190 was site-directed deleted. Data presented here suggest that the GLUT1 CAE2181-2190 participates in the increase of GLUT1 gene expression in glucose deprivation and hypoxia.

Citations

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