関連する実験動画
Updated: Aug 10, 2026
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Live-cell Imaging of Sensory Organ Precursor Cells in Intact Drosophila Pupae
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ドロソフィラの翼の境界形成:ノッチの活動は,POUタンパク質のNubbinbinによって弱まります
1European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.
Science (New York, N.Y.)
|July 17, 1998
まとめ
POUドメインタンパク質のNubbinは,ノッチ依存遺伝子を抑制することによって,ドロソフィラの翼で鋭い組織境界を作り出すのに役立ちます. このタンパク質は,Notch活動のための値を確立し,発達に不可欠な特定の遺伝子発現領域を定義します.
科学分野:
- 発達生物学 発達生物学について
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- ノッチ受容体媒介細胞相互作用は,脊椎動物と昆虫の両方の組織境界の特異化にとって不可欠です.
- ノッチ・リガンドは広く発現しているが,局所的なノッチ・アクティベーションは,異なる組織境界を形成するために不可欠である.
- 局所的なNotchの活性化を制御する正確なメカニズムは,現在も活発な研究分野です.
研究 の 目的:
- ドロソフィラ発達の過程で鋭い組織境界を確立するPOUドメインタンパク質のヌブビンの役割を調査する.
- ヌーブビンがノッチ経路の活性とドロソフィラ翼のドロス・セントラル境界における遺伝子発現にどのように影響するかを決定する.
主な方法:
- ドロソフィラ・メラノガスターの遺伝子解析を用いた.
- ヌービンタンパク質の発現パターンと機能を調べました.
- ノッチ依存標的遺伝子発現に対するNubbinの影響を評価した.
主要な成果:
- ヌービンは,ドロソフィラの翼の鋭いドロス・セントラル境界の形成に重要な貢献者として特定されました.
- ヌービンは,ノッチ依存の標的遺伝子を抑制することによって機能します.
- ヌービンの活動は,ノッチシグナル伝達のための重要な値を設定し,それによって境界固有の遺伝子発現の空間領域を定義します.
結論:
- ヌービンは,ドロソフィラの翼の発達中の細胞相互作用とパターン形成を調節する上で重要な役割を果たします.
- NubbinによるNotch依存遺伝子の抑制は,鋭い組織境界を確立するための重要なメカニズムです.
- ヌービンの機能を理解することで,発達シグナル伝達経路の正確な制御の洞察が得られます.
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関連する概念動画
03:14Notch Signaling Pathway
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
02:54Canonical Wnt Signaling Pathway
The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...
02:33Hedgehog Signaling Pathway
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
01:41Non-Canonical Wnt Signaling Pathways
Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
01:39Mechanism of Filopodia Formation
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
03:14Notch Signaling Pathway
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...