Glucose Transporter 1 Expression
Glucose Transporter 1 Expression - Related Videos
06:28
A Simple Flow Cytometric Method to Measure Glucose Uptake and Glucose Transporter Expression for Monocyte Subpopulations in Whole Blood
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Cited by 13 •
2016
Monocytes are integral components of the human innate immune system that rely on glycolytic metabolism when activated. We describe a flow cytometry protocol to measure glucose transporter expression and glucose uptake by total monocytes and monocyte subpopulations in fresh whole blood.
01:27
Glucose Transporters
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2023
Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose. Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes: Class I comprises GLUT1 to GLUT4 and GLUT14. Class II has GLUT5, GLUT7,...
05:52
In Vitro Glucose Depletion Assay: A Fluorescence-Based Method to Quantify Cellular Glucose Uptake via Extracellular Glucose Depletion Measurement
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2025
This video demonstrates an in vitro assay to indirectly measure intracellular glucose uptake. The assay uses a fluorescently-labeled glucose analog to establish a correlation between extracellular glucose depletion and intracellular glucose uptake.
12:21
Thermostabilization, Expression, Purification, and Crystallization of the Human Serotonin Transporter Bound to S-citalopram
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Cited by 15 •
2016
This manuscript describes how to screen for thermostabilizing mutations, purify the human serotonin transporter, generate high affinity antibodies, and crystallize the serotonin transporter-antibody complex bound to the antidepressant drug S-citalopram. This protocol can be adapted to the study of other challenging membrane transporters, receptors, and channels.
11:27
Methods to Study Epithelial Transport Protein Function and Expression in Native Intestine and Caco-2 Cells Grown in 3D
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Cited by 16 •
2017
We describe simple methods to study the regulation of intestinal serotonin transporter (SERT) function and expression using an in vitro cell culture model of Caco-2 cells grown in 3D and an ex vivo model of mouse intestines. These methods are applicable to the study of other epithelial transporters.
FAQs
GLUT1 abundance influences how much glucose a cell can access when glucose concentrations differ across the plasma membrane. Because transport follows the concentration gradient, increased membrane protein availability can be examined in relation to glucose demand without treating the transporter itself as an ATP-consuming pump. This distinction frames expression studies around transport capacity and cellular metabolism.
Rapidly growing tumors may require increased glucose availability to support their altered metabolism, making elevated GLUT1 expression a useful indicator of metabolic demand. The finding does not by itself establish the complete metabolic state of a tumor, but it can help researchers characterize how tumor cells adapt to growth and changing environmental conditions.
Oxygen-limited tumor regions are an important context for interpreting GLUT1 measurements because increased expression may accompany adaptation to restricted oxygen conditions. Comparing GLUT1 levels across tumors or tissue regions can therefore help identify metabolic differences associated with oxygen availability. Interpretation remains strongest when expression is considered alongside the biological and spatial context of the sample.
These measurements describe different levels of the same biological system. Gene-expression analysis addresses production of the GLUT1 transcript, protein assays assess the abundance of the transporter, and tissue imaging shows where expression occurs within a sample. Using the appropriate level of measurement helps distinguish overall expression changes from spatial patterns in tumor tissue.
Researchers can examine GLUT1 through gene-expression methods, protein assays, or tissue imaging, depending on the question being asked. Gene-based measurements characterize production, protein assays evaluate transporter abundance, and imaging adds information about distribution in tissue. Together, these approaches can provide complementary evidence about tumor biology and metabolic adaptation rather than a single undifferentiated measurement.
Tissue imaging can reveal how GLUT1 expression is distributed within a tumor rather than reporting only an average value for the whole sample. This spatial information may help researchers relate transporter abundance to distinct tumor regions, including areas associated with limited oxygen. Such comparisons can improve characterization of tumor heterogeneity and metabolic adaptation.
GLUT1 expression is useful when researchers want to study increased glucose demand, altered metabolism, or adaptation to oxygen-limited conditions. Measurements can help characterize these features across tumor samples and support evaluation of potential diagnostic markers. They may also contribute to research on therapies that target tumor metabolism, although expression alone does not establish therapeutic effectiveness.