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Drosophila Pupal Abdomen Immunohistochemistry
Published on: October 2, 2011
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デカペンタペリジは,ドロソフィラ胚の背中腹部のパターンを組織する形態原体として作用します
1Department of Molecular and Cell Biology, University of California, Berkeley 94720.
Cell
|October 30, 1992
まとめ
デカペンタプレジック (dpp) は,TGF-βファミリーのメンバーで,ドロソフィラ胚の背中腹部のパターンを確立するために形態原体として作用します. 段階的なdpp活動は,胚の発達に不可欠な,独特の皮膚外細胞の運命を指定します.
科学分野:
- 発達生物学 発達生物学とは
- 遺伝学 遺伝学とは
- 分子生物学は分子生物学である.
背景:
- TGF-βシグナル伝達経路は,胚の発達において重要な役割を果たします.
- デカペンタプレジック (decapentaplegic,dpp) とは,ドロソフィラ・メラノガスター (Drosophila melanogaster) のTGF-β超ファミリーの重要な遺伝子である.
- 適切な背中内部のパターンは,胚の構造形成に不可欠です.
研究 の 目的:
- ドロソフィラの背面胚構造の確立におけるデカペンタプレジック (dpp) の役割を調査する.
- dppがモルフォゲンとして機能し,その濃度に基づいて細胞の運命を指定できるかどうかを判断する.
- 胚の極性を定義し,外皮のパターンを組織するDPPの能力を探求する.
主な方法:
- 早期のドロソフィラ胚にデカペンタプレジック (dpp) RNAトランスクリプトを注入する.
- 注入されたdppRNAの濃度が変化した結果,細胞運命の分析.
- 局所的なdppRNA注射は,母体およびジゴトの極性が損なわれた胚に施されます.
主要な成果:
- dppRNA濃度の上昇は,より一層の背面細胞の運命につながった.
- 低レベルのdppは腹腔内皮膜の発達を支えた,中間レベルは背面の表皮を支えた,高レベルのdppはアンニオセロサを誘発した.
- dppを極性欠陥胚に注入すると,胚の極性および外皮のパターンを確立する能力が示されました.
結論:
- デカペンタプレジック (dpp) は,ドロソフィラの発達における細胞外形態素として機能する.
- dpp活動のグラディエンスは,外皮細胞の運命のパターンを特定するのに十分です.
- dppは,胚の背中と腹の極性を確立し,組織する上で重要な役割を果たします.
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