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Related Experiment Video

Updated: Oct 30, 2025

Analyzing the Size, Shape, and Directionality of Networks of Coupled Astrocytes
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Analysing Intercellular Communication in Astrocytic Networks Using "Astral".

Egor Dzyubenko1, Wojciech Prazuch2, Matthias Pillath-Eilers1

  • 1Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany.

Frontiers in Cellular Neuroscience
|July 2, 2021
PubMed
Summary

We developed Astral, a new software tool for analyzing astrocyte communication using live-cell calcium imaging. Astral quantifies calcium events and their propagation, revealing how astrocytes interact with neurons.

Keywords:
astrocyte-neuron interactionscalcium imagingdata analysisglianetwork coupling

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Last Updated: Oct 30, 2025

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biophysics

Background:

  • Astrocytic networks play a crucial role in regulating neuronal activity.
  • A lack of comprehensive data analysis tools hinders the study of intercellular communication in astrocytes.

Purpose of the Study:

  • To develop and validate "Astral," a novel software package for analyzing intercellular communication in astrocytic networks using live-cell calcium imaging.
  • To enable network-wide quantification and analysis of calcium (Ca++) events and their propagation.

Main Methods:

  • Development of the "Astral" software package, including a core processing pipeline and a visualization tool.
  • Analysis of calcium imaging data without requiring region-of-interest assignment.
  • Proof-of-concept experiments using primary astrocyte cultures and co-cultures with neurons.

Main Results:

  • Astral enables network-wide quantification and analysis of Ca++ events and their intercellular propagation.
  • Inter-astrocytic interactions are dependent on gap junction and connexin hemichannel permeability.
  • Astrocytic Ca++ event generation is significantly increased in co-cultures with neurons, driven by enhanced gap junction and connexin hemichannel formation.

Conclusions:

  • The Astral software provides a powerful tool for processing and quantifying calcium imaging data in astrocytic networks.
  • Systematic investigation of astrocyte-neuronal interactions at the network level is necessary.
  • Astral facilitates the study of astrocyte-neuronal interactions on a network level.