<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

子宮内エレクトロポレーションは、皮質ニューロンのサブセットで、遺伝子機能の研究のために初...

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JoVE Journal Neuroscience

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

子宮内エレクトロポレーションは、皮質ニューロンのサブセットで、遺伝子機能の研究のために初代神経培養した

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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

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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.

子宮内エレクトロポレーションでは、生体内で神経前駆細胞をトランスフェクションするための貴重な方法です。電極の配置とエレクトロの発達タイムポイントに応じて、皮質細胞の特定のサブセットを対象とすることができます。標的細胞は、その後、in vivoまたは遺伝的改変の影響についてin vitroで分析することができます。

次の実験の全体的な目標は、新皮質のニューロン前駆細胞の特定のサブセットにおける遺伝子のノックダウンまたは過剰発現の発生効果を調べることです。これは、DNAをラット胚にin vivoエレクトロポレーションして新皮質前駆細胞をトランスフェクションすることによって達成されます。第2のステップとして、エレクトロポレーション領域を解剖して、トランスフェクションされた細胞を濃縮します。

次に、これらの細胞を解離し、チャンバースライドに播種して培養します。内因性遺伝的変化と外因性因子の適用の両方の影響を調べるために、avisionソフトウェアを使用した定量的測定に基づいて、神経突起の伸長と分岐への影響を示す結果が得られました。この技術が他の技術(脂質ベースの初代ニューロン培養物へのトランスフェクションなど)と比較した場合の主な利点は、ニューロン前駆細胞の特定のサブセットを標的とできることです。

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