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Updated: May 15, 2026

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Modeling Paracrine Noncanonical Wnt Signaling In Vitro
Published on: December 10, 2021
Wnt信号伝達の仲介者としてTAZの役割
Luca Azzolin1, Francesca Zanconato, Silvia Bresolin
1Department of Biomedical Sciences, University of Padua School of Medicine, viale Colombo 3, 35126 Padua, Italy.
Cell
|December 19, 2012
まとめ
TAZは,Wnt信号伝達の下流で,ヒッポの経路から独立して作用します. Wntの活性化は,TAZの分解を阻害することによってTAZを安定させ,Wntの標的遺伝子発現と生物学的結果に影響を与えます.
科学分野:
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
- 発達生物学 発達生物学について
背景:
- Wnt成長因子は,細胞運命を決定する上で極めて重要です.
- Wnt信号を細胞反応に変換する正確なメカニズムは不明である.
- TAZは,様々な細胞プロセスに関与する既知の転写共同活性化剤です.
研究 の 目的:
- Wnt/β-カタニン信号伝達経路におけるTAZの役割を調査する.
- TAZがヒッポシグナル伝達における既知の役割とは独立して機能するかどうかを判断する.
- Wnt信号がTAZレベルと活動にどのように影響するか解明する.
主な方法:
- TAZとWnt/β-catenin経路の成分との相互作用を調査しました.
- Wntシグナリングの存在と不在でTAZの分解メカニズムを評価.
- TAZによって調節されるWnt標的遺伝子を特定するために,全ゲノム解析を用いた.
主要な成果:
- TAZはWnt/β-cateninカスケードの下流エフェクタとして機能します.
- Wntシグナル伝達におけるTAZの役割は,ヒッポシグナル伝達におけるTAZの機能とは独立しています.
- Wntシグナリングは,β-TrCPによるβ-カテニンのリン酸化およびその後のユビキチネーションを防ぐことにより,TAZの分解を抑制する.
- TAZは,Wnt誘発の転写応答の重要な部分を媒介する.
- TAZの蓄積は,Wntの活性化時にβ-カタニンの蓄積と相関しています.
結論:
- TAZはWnt信号伝達の重要な媒介であり,Wnt経路の活性化と転写の変化を結びつける.
- TAZの安定化は,Wntの信号伝達の一般的な結果であり,Wntの生物学的効果を媒介するために重要である.
- この研究は,Wnt信号がTAZの安定性と機能を制御する新しい規制軸を明らかにしています.
関連する概念動画
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...
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...
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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...
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Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
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