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Visualizing Shifts on Neuron-Glia Circuit with the Calcium Imaging Technique
Published on: April 8, 2022
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Visualizing Shifts on Neuron-Glia Circuit with the Calcium Imaging Technique
Matheus H Tempone1, Hercules R Freitas2, Clarissa S Schitine3
1Laboratory of Neurochemistry, Institute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro.
Journal of Visualized Experiments : Jove
|April 25, 2022
Summary
This study details a protocol for creating in vitro models of neural circuits, focusing on calcium signaling in retinal cells. The method distinguishes neurons from glia and analyzes calcium dynamics using fluorescent probes for research applications.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Calcium ions (Ca2+) are crucial intracellular messengers in virtually all cellular functions.
- Understanding calcium dynamics in neural circuits is essential for comprehending brain function and disease.
Purpose of the Study:
- To develop and present a step-by-step protocol for establishing in vitro models of neuron-glial circuits.
- To demonstrate the dynamic study of calcium shifts in these models, using the retina as a primary example.
Main Methods:
- Preparation and culture of neuron-glial cells from peripheral and central nervous system tissues.
- Selective differentiation of neurons and glia based on responses to KCl and ATP.
- Utilizing ratiometric fluorescent dyes, such as Fura-2, for quantifying intracellular free Ca2+ concentration.
Main Results:
- Established selective in vitro models of neuron-glial circuits from various nervous system regions.
- Demonstrated the ability to differentiate neurons from glia based on distinct cellular responses.
- Quantified calcium shifts using Fura-2, which measures Ca2+ concentration via fluorescence intensity at specific wavelengths.
Conclusions:
- The developed protocol enables the creation and analysis of neuron-glial circuit models with a focus on calcium signaling.
- This methodology provides a framework for studying cellular interactions and calcium dynamics in the nervous system.
- The retina model serves as a viable system for illustrating complex cellular communication through calcium shifts.
