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Visualizing the Intracellular Trafficking in Zebrafish Mauthner Cells.

Rongchen Huang1, Yang Xu1, Min Chen1

  • 1Hefei National Laboratory for Physical Sciences at the Microscale, Chinese Academy of Sciences Key Laboratory of Brain Function and Disease, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, P.R. China.

Methods in Molecular Biology (Clifton, N.J.)
|April 12, 2022
PubMed
Summary

Studying intracellular trafficking in zebrafish neurons reveals axonal transport dynamics. This technique enables detailed analysis of cargo movement, crucial for understanding neurological diseases.

Keywords:
Axonal transportIn vivo imaging; Mauthner cellsMitochondriaSingle-cell electroporation

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biophysics

Background:

  • Axonal transport is vital for neuronal development, survival, and function.
  • Disruptions in axonal transport are linked to various neurological diseases.
  • In vitro studies may not fully represent in vivo conditions, necessitating advanced techniques.

Purpose of the Study:

  • To introduce a novel intravital technique for studying axonal transport in zebrafish.
  • To enable single-cell resolution analysis of intracellular trafficking.
  • To provide a framework for investigating cargo kinetics and molecular regulators in vivo.

Main Methods:

  • Utilizing zebrafish as an in vivo model system.
  • Developing a method for labeling specific neuronal cargoes, such as mitochondria.
  • Employing single-cell resolution imaging within Mauthner cells.

Main Results:

  • Demonstration of a robust technique for visualizing and analyzing cargo trafficking in live zebrafish neurons.
  • Establishment of a method applicable to mitochondria and potentially other cargoes.
  • Foundation laid for kinetic studies of axonal transport in a physiologically relevant context.

Conclusions:

  • The presented intravital technique offers a powerful tool for studying axonal transport dynamics.
  • This method facilitates a deeper understanding of neuropathology mechanisms.
  • The technique is adaptable for exploring various cargoes and regulatory factors in axonal transport.