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Updated: Nov 12, 2025
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Free-floating Immunostaining of Mouse Brains
Published on: October 7, 2021
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Optimized Immunostaining of Embryonic and Early Postnatal Mouse Brain Sections
Kawssar Harb1,2, Michele Bertacchi1, Michèle Studer1
1Université Côte d'Azur, CNRS, Inserm, iBV, France.
Bio-Protocol
|March 18, 2021
Summary
We present an optimized immunostaining protocol for visualizing protein expression in mouse neocortical neurons. This detailed method enhances detection of molecular determinants crucial for understanding brain development and function.
Area of Science:
- Neuroscience
- Developmental Biology
- Molecular Biology
Background:
- The mammalian neocortex exhibits complex areal and laminar organization.
- Identifying neocortical neuron identity relies on detecting specific protein expression.
- Existing immunostaining protocols have variable outcomes impacting research.
Purpose of the Study:
- To provide a detailed, optimized immunostaining protocol for neocortical tissue.
- To enable efficient and reliable detection of molecular determinants in neocortical neurons.
- To aid in understanding neocortical development, identity, and function.
Main Methods:
- Developed a comprehensive protocol for both thin cryostat and thick vibratome sections.
- Included detailed steps from brain collection and sectioning to antibody dilution and image analysis.
- Focused on minimizing non-specific background for clear protein detection.
Main Results:
- The protocol successfully detected area- and layer-specific molecular determinants.
- Demonstrated efficacy with various antibodies targeting key developmental proteins.
- Provided examples of immunostaining for Satb2 and Ctip2 in mouse neocortex.
Conclusions:
- The optimized immunostaining protocol is robust and versatile for neocortical research.
- This method facilitates accurate assessment of neocortical neuron identity and development.
- The protocol is essential for advancing our understanding of the mammalian neocortex.
