简介：
Overview
This protocol describes an improved explant procedure that involves ex utero electroporation, dissection, and culture of entire cerebral hemispheres from embryonic mice. This preparation facilitates pharmacological studies and assays of gene function during early cortical development.
Key Study Components
Area of Science
- Neuroscience
- Developmental Biology
- Pharmacology
Background
- Understanding early cortical development is crucial for insights into neurodevelopmental disorders.
- Ex utero electroporation allows for targeted gene manipulation in embryonic tissues.
- Whole hemisphere explants provide a comprehensive model for studying cortical neuron development.
- Histological analyses can reveal the effects of genetic modifications on neuronal populations.
Purpose of Study
- To prepare whole cerebral hemisphere explants for studying early cortical development.
- To evaluate the impact of mutations or toxins on cortical neuron development.
- To facilitate pharmacological studies using the explant model.
Methods Used
- Harvesting mouse embryos on embryonic day 13.
- Injecting plasmid DNA into the cerebral ventricle.
- Performing ex utero electroporation to introduce genetic material.
- Fixing and sectioning the whole hemisphere explant for histological analyses.
Main Results
- Successful preparation of whole cerebral hemisphere explants.
- Effective gene expression observed in GFP-expressing neurons.
- Histological analyses demonstrated the consequences of genetic modifications.
- Pharmacological studies can be conducted on the explants to assess drug effects.
Conclusions
- The improved explant procedure is a valuable tool for studying cortical development.
- Ex utero electroporation enables precise manipulation of gene function.
- This model can aid in understanding the effects of environmental factors on neuronal development.
What is ex utero electroporation?
Ex utero electroporation is a technique used to introduce plasmid DNA into embryonic tissues by applying electrical pulses.
Why use whole hemisphere explants?
Whole hemisphere explants provide a comprehensive model to study the development and function of cortical neurons in a controlled environment.
What are the applications of this protocol?
This protocol can be used for pharmacological studies, gene function assays, and evaluating the effects of mutations or toxins on cortical development.
At what embryonic day are the mouse embryos harvested?
Mouse embryos are harvested on embryonic day 13 for this procedure.
What analyses can be performed on the explants?
Histological analyses can be performed to evaluate the effects of genetic modifications on neuronal populations.
How does this study contribute to neuroscience?
This study enhances our understanding of early cortical development and the impact of genetic and environmental factors on neuronal growth.
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