エフリン受容体エフリン発現細胞の分離集団における細胞特有の情報処理
Claus Jørgensen1, Andrew Sherman, Ginny I Chen
1Samuel Lunenfeld Research Institute (SLRI), Mount Sinai Hospital, Toronto M5G 1X5, Canada.
Science (New York, N.Y.)
|December 17, 2009
まとめ
細胞分類は非対称な信号ネットワークに依存しています. 異なる細胞タイプは,独特のチロシンキナーゼを使用して,細胞と細胞の接触によって開始された信号を処理し,組織内の複雑な自己組織を明らかにします.
科学分野:
- 細胞生物学 細胞生物学
- システム生物学 システム生物学
- バイオケミストリー バイオケミストリー
背景:
- 細胞の自己組織化は,組織の発達と機能に極めて重要です.
- エフリン受容体とエフリンリンガンドの相互作用は,双方向シグナル伝達を通じて細胞の位置づけを媒介する.
- 共同培養の細胞タイプにおける信号伝達の調査は,重大な課題を提示しています.
研究 の 目的:
- EphB2とエフリン-B1による細胞分類を制御する細胞特有の信号ネットワークを体系的に決定する.
- 細胞と細胞の接触時の非対称な信号伝達の背後にある分子メカニズムを解明する.
主な方法:
- 量質質スペクトロメトリーは,混合細胞集団におけるフォスフォチロジンシグナル伝達イベントを分析するために使用されました.
- 同位体ラベル付けにより,細胞特異のタンパク質解析が容易になりました.
- 小型の干渉RNAスクリーニングは,信号伝達ネットワークと細胞分類の間の機能的リンクを確立するために使用されました.
主要な成果:
- 細胞特異的なチロシンリン酸化イベントは,EphB2およびエフリン-B1を発現する細胞で特定されました.
- 2つの相互作用する細胞タイプ間の非対称な信号伝達経路が明らかにされました.
- 異なるチロシンキナーゼとダウンストリームターゲットは,各種の細胞によって信号処理に使用されました.
結論:
- 細胞の分類は,非対称で,細胞特異的な信号ネットワークによって制御されます.
- 相互作用する細胞タイプは,接触によって引き起こされる信号を差異的に処理する.
- この研究は,複雑な組織における細胞間の通信を理解するためのシステムレベルのネットワークモデルを提供します.
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