関連する実験動画
Updated: Jul 6, 2026

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Larval RNA Interference in the Red Flour Beetle, Tribolium castaneum
Published on: October 13, 2014
arrowは,Winglessの信号伝達に不可欠なLDL受容体に関連するタンパク質をコードしています
M Wehrli1, S T Dougan, K Caldwell
1University of Pennsylvania School of Medicine, Philadelphia 19104, USA.
Nature
|October 12, 2000
まとめ
矢印遺伝子は,ドロソフィラの無翼/Wnt信号受容に不可欠であり,トランスメブランタンパク質として作用する. この発見は,Wnt信号伝達経路における低密度リポプロテイン受容体関連タンパク質 (LRPs) の保存された役割を明らかにしています.
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:
- Wntシグナリングは,細胞命運の決定と発達中の形態変異に不可欠です.
- フライズレード受容体を含む無翼 (Drosophila Wnt) 信号伝導カスケードの構成要素は知られている.
- ウィングレス信号の受容と細胞膜を横断する伝導の正確なメカニズムは,まだ完全に理解されていません.
研究 の 目的:
- ドロソフィラの無翼シグナル伝達に不可欠な遺伝子を特定し,特徴づけること.
- 細胞レベルでの無翼の信号受信のメカニズムを解明する.
主な方法:
- 翼のないシグナル伝達に必要な遺伝子を特定するために,ドロソフィラの遺伝子解析.
- 特定された遺伝子の分子特性"矢"である.
- Arrowタンパク質の機能と局所を決定するための生化学および構造分析.
主要な成果:
- "矢"遺伝子は,ドロソフィラのすべての無翼シグナリングイベントに不可欠です.
- 矢印は,Winglessの入力を受け取る細胞で機能し,Dishevelledの上流に作用する.
- Arrowは,低密度リポプロテイン受容体関連タンパク質 (LRP) サブファミリー (LRP5/6) と同型である単一パストランスメブランタンパク質をコードします.
結論:
- Arrowは,Wingless/Wnt信号受容複合体の重要な構成要素として機能し,潜在的にFrizzledタンパク質と連携している.
- この研究は,Wingless/Wnt信号受信におけるLRPsの新しく保存された機能を特定しています.
- この発見は,Wnt経路の活性化に根本的な分子機構に関する新しい洞察を提供します.
関連する概念動画
Receptor-mediated Endocytosis
Overview
Receptor-mediated Endocytosis
Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
Clathrin-Mediated Endocytosis of LDL
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Canonical 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...
Non-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...
Canonical 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...
Non-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...

