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Published on: December 7, 2017
Total Internal Reflection Fluorescence Microscopy to Study GLUT4 Trafficking
Sebastian Wasserstrom1, Björn Morén1, Karin G Stenkula2
1Department of Experimental Medical Science, Lund University, BMC C11, Lund, 22 184, Sweden.
Insights
Total internal reflection fluorescence (TIRF) microscopy visualizes real-time plasma membrane events. This method is crucial for studying glucose transporter type 4 (GLUT4) translocation in adipocytes, providing detailed insights into cellular processes.
Area of Science:
- Cell biology
- Biophysics
- Physiology
Background:
- Total internal reflection fluorescence (TIRF) microscopy enables real-time observation of cellular events near the plasma membrane.
- GLUT4 (glucose transporter type 4) translocation is a critical process in adipocytes for regulating blood glucose levels.
- Previous studies have utilized TIRF microscopy to investigate GLUT4 trafficking.
Purpose of the Study:
- To detail a standardized procedure for studying GLUT4 trafficking in isolated primary adipocytes using TIRF microscopy.
- To provide a methodological framework for researchers investigating glucose transport dynamics.
Main Methods:
- Isolation of primary adipocytes.
- Application of Total internal reflection fluorescence (TIRF) microscopy.
- Real-time monitoring of GLUT4 vesicle movement and fusion events at the plasma membrane.
Main Results:
- Demonstration of successful real-time visualization of GLUT4 translocation events.
- Quantitative analysis of GLUT4 vesicle dynamics, including fusion frequency and residence time.
- Validation of the TIRF microscopy protocol for studying GLUT4 trafficking in primary adipocytes.
Conclusions:
- TIRF microscopy is an effective technique for studying GLUT4 trafficking in adipocytes.
- The described protocol facilitates detailed investigation of glucose transporter dynamics at the cellular level.
- This methodology can advance understanding of metabolic diseases related to insulin resistance.
Abstract:
Total internal reflection fluorescence (TIRF) microscopy is a powerful method that allows examination of plasma membrane close events in real time. The last decade, the method has successfully been used to explore GLUT4 translocation in adipocytes. Here, we describe the procedure for studying GLUT4 trafficking using TIRF microscopy in isolated primary adipocytes.
