Abstract
The facilitative glucose transporter (GLUT) family plays a key role in metabolic homeostasis, controlling the absorption rates and rapid response to changing carbohydrate levels. The facilitative GLUT2 transporter is uniquely expressed in metabolic epithelial cells of the intestine, pancreas, liver, and kidney. GLUT2 dysfunction is associated with several pathologies, including Fanconi-Bickel syndrome, a glycogen storage disease, characterized by growth retardation and renal dysfunction. Interestingly, GLUT2 activity is modulated by its cellular localization. Membrane translocation specifically regulates GLUT2 activity in enterocytes, pancreatic β-cells, hepatocytes, and proximal tubule cells. We have established a system to visualize and quantify GLUT2 translocation, and its dynamics, by live imaging of a mCherry-hGLUT2 fusion protein in polarized epithelial cells. This system enables testing of putative modulators of GLUT2 translocation, which are potential drugs for conditions of impaired glucose homeostasis and associated nephropathy.
Original language | American English |
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Title of host publication | Methods in Molecular Biology |
Publisher | Humana Press Inc. |
Pages | 241-254 |
Number of pages | 14 |
DOIs | |
State | Published - 2018 |
Publication series
Name | Methods in Molecular Biology |
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Volume | 1713 |
ISSN (Print) | 1064-3745 |
Bibliographical note
Funding Information:This work was supported by the European Research Council Consolidator Grant (OCLD 681870), and through the generous gift of Sam and Rina Frankel. Resources were provided by the Silberman Institute of Life Sciences and the Alexander Grass Center for Bioengineering of the Hebrew University of Jerusalem.
Publisher Copyright:
© Springer Science+Business Media LLC 2018.
Keywords
- GLUT2
- Glucose transport
- Kidney function
- Live imaging
- Polarized epithelium
- Translocation
- Type 2 diabetes