Spannung und Calcium Dual Channel Optical Mapping von Cultured HL-1 Vorhofmuskelzellen Monolayer

Overview

This article describes a technique for dual channel optical mapping in cultured HL-1 atrial cell monolayers. The protocol enables simultaneous visualization of calcium and voltage activity, facilitating detailed analysis of electrophysiological properties.

Key Study Components

Area of Science

• Electrophysiology
• Cell Culture
• Fluorescence Microscopy

Background

• HL-1 atrial cells are a model for studying cardiac electrophysiology.
• Understanding calcium and voltage dynamics is crucial for cardiac research.
• Simultaneous mapping provides insights into cellular behavior.
• This technique enhances the analysis of action potentials and calcium transients.

Purpose of Study

• To map transmembrane potentials and calcium transients in HL-1 monolayers.
• To visualize the propagation of electrical signals across cell layers.
• To improve understanding of cardiac cell interactions.

Methods Used

• Culturing HL-1 cells on a cover slip to achieve proper density.
• Loading cells with calcium and voltage-sensitive dyes.
• Stimulating the monolayer with a bipolar electrode.
• Recording action potentials and calcium transients using fluorescence microscopy.

Main Results

• Successful simultaneous mapping of calcium and voltage activity.
• Clear visualization of signal propagation across the monolayer.
• Detailed traces of action potentials and calcium transients obtained.
• Insights into the electrophysiological properties of HL-1 cells.

Conclusions

• The dual channel optical mapping technique is effective for cardiac research.
• This method enhances the understanding of cellular electrophysiology.
• Future studies can build on these findings to explore cardiac function.

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