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Related Experiment Video

Updated: Jun 9, 2026

Preparation of Mouse Brain Tissue for Immunoelectron Microscopy
08:47

Preparation of Mouse Brain Tissue for Immunoelectron Microscopy

Published on: July 20, 2010

EphrinA5 protein distribution in the developing mouse brain.

Claire Deschamps1, Milena Morel, Thierry Janet

  • 1Institut de Physiologie et Biologie Cellulaires, Université de Poitiers, CNRS, France.

BMC Neuroscience
|August 27, 2010
PubMed
Summary

EphrinA5 protein is crucial for brain development, guiding neural connections in systems like the olfactory and retinotectal pathways. Its expression pattern highlights its role in forming topographic maps during mouse brain development.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Molecular Biology

Background:

  • EphrinA5 is a key guidance molecule in the Eph-ephrin family, vital for brain development.
  • While its mRNA is found in several systems, the protein's distribution was previously uncharacterized.
  • Understanding EphrinA5 protein localization is crucial due to its membrane-anchored nature and potential to act distally from its expressing neuron.

Purpose of the Study:

  • To investigate the spatial and temporal distribution of EphrinA5 protein in the developing mouse brain.
  • To correlate EphrinA5 protein expression patterns with known developmental processes and neural system formation.

Main Methods:

  • Immunohistochemistry was employed to detect EphrinA5 protein expression.
  • Analysis was performed on developing mouse brains from embryonic day E12.5 to postnatal day P0.

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Last Updated: Jun 9, 2026

Preparation of Mouse Brain Tissue for Immunoelectron Microscopy
08:47

Preparation of Mouse Brain Tissue for Immunoelectron Microscopy

Published on: July 20, 2010

Quantifying the Heterogeneous Distribution of a Synaptic Protein in the Mouse Brain Using Immunofluorescence
09:18

Quantifying the Heterogeneous Distribution of a Synaptic Protein in the Mouse Brain Using Immunofluorescence

Published on: January 29, 2019

In Situ Visualization of Axon Growth and Growth Cone Dynamics in Acute Ex Vivo Embryonic Brain Slice Cultures
10:45

In Situ Visualization of Axon Growth and Growth Cone Dynamics in Acute Ex Vivo Embryonic Brain Slice Cultures

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Main Results:

  • EphrinA5 protein exhibited high expression in the developing mouse brain (E12.5-E16.5), notably in the olfactory bulb, cortex, striatum, thalamus, and colliculi.
  • Early expression in the olfactory nerve suggests a role in guiding primary olfactory neurons.
  • Dynamic expression in the thalamus and mesencephalic dopaminergic neuron targets indicates involvement in corticothalamic and mesostriatal topographic mapping, respectively.
  • Expression levels decreased significantly after E16.5, suggesting a primary role in early topographic map formation.

Conclusions:

  • EphrinA5 protein is expressed in specific regions of the developing mouse brain, implicating it in olfactory, retinotectal, thalamocortical, corticothalamic, and mesostriatal systems.
  • The study provides essential insights into EphrinA5's role in developmental topographic mapping.
  • Findings may inform future research on pathway restoration in damaged brains via cell transplantation.