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レセプターチロシンキナーゼとERKシグナリングのレギュレータのための機能的なRNAiスクリーン
Adam Friedman1, Norbert Perrimon
1Department of Genetics, Howard Hughes Medical Institute, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA.
Nature
|November 7, 2006
まとめ
この研究では,ドロソフィラの全ゲノムRNA干渉スクリーンを用いて,細胞外信号調節キナーゼ (ERK) 信号伝達の新しい調節体を特定しました. スクリーンは,Ste20のようなキナーゼとPPMファミリー・フォスファタゼを含む331の保存経路の調節体を明らかにし,潜在的な薬物標的を強調しました.
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.
- 遺伝学 遺伝学とは
背景:
- 受容体チロシンキナーゼ (RTK) と細胞外シグナル調節キナーゼ (ERK) のシグナル伝達は,メタゾアンの発達に不可欠であり,がんなどの疾患に関与しています.
- RTK/ERKのコア成分は知られているが,より広範な規制ネットワークが存在し,多くの遺伝子は伝統的なスクリーニング方法の限界のために未発見である.
研究 の 目的:
- RTK/ERKシグナル伝達の新しいレギュレータを特定するために,偏見のない全ゲノムスクリーンを実行します.
- ERK経路の出力によって統合された細胞プロセスの全体的な見方を得るために.
- 特定されたレギュレータを,in vivoおよび哺乳類の細胞における関連性について検証および分類する.
主な方法:
- ドロソフィラ細胞で高通量,全ゲノムRNA干渉 (RNAi) スクリーンを実施しました.
- ERKの活性化を監視するために,新しい定量的な細胞測定法を使用しました.
- 複数の細胞タイプと刺激で選択された構成要素のさらなる分析を行った.
主要な成果:
- RTK/ERKシグナル伝達の331の新しいレギュレータを特定し,検証しました.
- ERK経路の出力は,様々な保存された細胞過程を統合することを実証した.
- Ste20のようなキナーゼと,RTK/ERKシグナル伝達を in vivoおよび哺乳類の細胞で調節するPPMファミリーのフォスファターゼを分離した.
結論:
- RTK/ERK信号伝達経路は,保存されたタンパク質の大きなネットワークによって調節されます.
- この研究で特定された新規のレギュレータは,異常なRTK/ERKシグナル伝達に関連した疾患の潜在的な治療標的を表しています.
- この研究は,RTK/ERK経路の調節と薬物発見を理解するための包括的なリソースを提供します.
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