Metabolic Regulation of Glucose Transporters

Glucose transporters constitute a family of facilitative carriers that regulate cellular uptake of glucose in response to metabolic demands. Among these, GLUT1 ensures basal glucose supply in most tissues, while GLUT4 mediates insulin-stimulated uptake in muscle and adipose cells. Transporter activity is governed at multiple levels: transcriptional control adjusts transporter abundance in response to hypoxia, nutrient status or hormonal cues; post-translational modifications such as phosphorylation modulate intrinsic carrier activity and membrane residency; and vesicular trafficking shuttles transporters between intracellular compartments and the plasma membrane. Central signalling pathways, including those activated by insulin, energy stress sensors and DNA-damage kinases, converge on glucose transporter regulation. This dynamic control underpins systemic glucose homeostasis, with dysregulation contributing to diabetes, cardiovascular disease and tumour metabolism. Understanding these interconnected regulatory axes offers routes to novel therapies aimed at restoring balanced glucose uptake across tissues.

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Metabolic Regulation of Glucose Transporters publication trend

The graph below shows the total number of articles in metabolic regulation of glucose transporters across all publications each year (not limited to Nature Index journals).

Technical terms

GLUT1: A ubiquitously expressed facilitative glucose transporter responsible for basal glucose uptake across cell types.

GLUT4: An insulin-responsive glucose transporter predominately found in skeletal muscle and adipose tissues, mobilised to the plasma membrane upon stimulation.

ERK1/2: Extracellular signal-regulated kinases that phosphorylate downstream targets, including transcription factors, in response to growth factors and metabolic signals.

MEF2D: Myocyte enhancer factor 2D, a transcription factor that binds to specific response elements in the Glut4 promoter to regulate gene expression.

ATM: Ataxia-telangiectasia mutated kinase, a sensor of DNA damage that also phosphorylates metabolic proteins, linking stress responses to nutrient regulation.

Hypoxia-inducible factor (HIF): A transcriptional regulator stabilised under low-oxygen conditions, orchestrating adaptive gene expression including that of glucose transporters.

References

1. ATM and GLUT1-S490 Phosphorylation Regulate GLUT1 Mediated Transport in Skeletal Muscle. PLOS ONE (2013).
2. The glucose-lowering agent sodium tungstate increases the levels and translocation of GLUT4 in L6 myotubes through a mechanism associated with ERK1/2 and MEF2D. Diabetologia (2008).
3. Dual Control of glut1 Glucose Transporter Gene Expression by Hypoxia and by Inhibition of Oxidative Phosphorylation*. Journal of Biological Chemistry (1997).