<em>In utero</em> Electroporation followed by Primary Neuronal Culture for Studying Gene Function in Subset of Cortical Neurons

Heather Rice; Seiyam Suth; William Cavanaugh; Jilin Bai; Tracy L. Young-Pearse

doi:10.3791/2103

In utero Electroporation followed by Primary Neuronal Culture for Studying Gene Function...

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JoVE Journal Neuroscience

In utero Electroporation followed by Primary Neuronal Culture for Studying Gene Function in Subset of Cortical Neurons

In utero Electroporation followed by Primary Neuronal Culture for Studying Gene Function in Subset of Cortical Neurons

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08:24 min

October 8, 2010

DOI: 10.3791/2103-v

Heather Rice¹, Seiyam Suth¹, William Cavanaugh¹, Jilin Bai², Tracy L. Young-Pearse¹

¹Center for Neurologic Diseases,Brigham and Woman's Hospital and Harvard Medical School, ²Department of Physiology and Neurobiology,University of Connecticut

Overview

This study explores the developmental effects of gene manipulation in specific subsets of neuronal progenitor cells using in utero electroporation. By targeting these cells in rat embryos, researchers can analyze the impact of genetic alterations on neuronal development.

Key Study Components

Area of Science

Neuroscience
Developmental Biology
Genetic Engineering

Background

In utero electroporation allows for targeted transfection of neuronal progenitor cells.
This technique enables the study of gene function in vivo.
Specific subsets of cortical cells can be analyzed based on the timing and placement of electroporation.
Understanding genetic effects on neuronal development is crucial for insights into neurodevelopmental disorders.

Purpose of Study

To investigate the effects of gene knockdown or overexpression in neocortical progenitor cells.
To assess the impact of genetic alterations on neurite outgrowth and branching.
To utilize in vivo techniques to enhance the specificity of genetic studies in neuronal development.

Methods Used

In vivo electroporation of DNA into rat embryos.
Dissection of the electroporated region to enrich for transfected cells.
Dissociation and culturing of transfected cells in chamber slides.
Quantitative measurements of neurite outgrowth and branching using imaging software.

Main Results

Demonstrated targeted transfection of specific neuronal progenitor cells.
Showed significant effects of genetic manipulation on neurite development.
Provided quantitative data supporting the advantages of in vivo electroporation over traditional methods.
Highlighted the potential for studying intrinsic and extrinsic factors affecting neuronal growth.

Conclusions

In utero electroporation is an effective method for studying gene function in neuronal development.
This approach allows for targeted analysis of specific cell populations in the neocortex.
Results contribute to a better understanding of the genetic basis of neurodevelopmental processes.

Frequently Asked Questions

What is in utero electroporation?

In utero electroporation is a technique used to introduce DNA into developing embryos, allowing for targeted genetic manipulation of specific cell types.

How does this method compare to traditional transfection techniques?

This method allows for more precise targeting of neuronal progenitor cells, which is not possible with traditional lipid-based transfection methods.

What are the advantages of using rat embryos for this study?

Rat embryos provide a well-characterized model for studying mammalian brain development and allow for in vivo analysis of genetic effects.

What types of measurements were taken in this study?

Quantitative measurements of neurite outgrowth and branching were obtained using imaging software to analyze the effects of genetic alterations.

Can this technique be applied to other species?

While this study focuses on rat embryos, in utero electroporation can potentially be adapted for use in other species with similar developmental processes.

What implications do the results have for understanding neurodevelopmental disorders?

The findings may provide insights into the genetic factors that contribute to neurodevelopmental disorders, aiding in the development of therapeutic strategies.

In utero electroporation is a valuable method for transfecting neuronal progenitor cells in vivo. Depending upon the placement of the electrodes and the developmental timepoint of electroporation, certain subsets of cortical cells can be targeted. Targeted cells can then be analyzed in vivo or in vitro for effects of genetic alteration.

The overall goal of the following experiment is to examine developmental effects of knockdown or overexpression of genes in specific subsets of neuronal progenitor cells in the neocortex. This is achieved by in vivo electroporation of DNA into rat embryos to transfect neocortical progenitor cells. As a second step, the electroporated region is dissected in order to enrich for transfected cells.

Next, these cells are dissociated and plated in chamber slides and cultured. In order to examine the effects of both intrinsic genetic alteration and application of exogenous factors, results were obtained that show effects on neurite outgrowth and branching based on quantitative measurements using avision software. The main advantage of this technique over others, such as lipid-based transfection of primary neuronal cultures, is that we can target specific subsets of neuronal progenitor cells.

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