関連する実験動画
Updated: Sep 2, 2026

10:37
Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
まとめ
人間の腫瘍細胞は,細胞の行動を変えることができる変容成長因子 (TGF) を分泌します. これらのTGFは,表皮成長因子 (EGF) 受容体におけるフォスフォチロジンレベルを上昇させることが判明しました.
科学分野:
- 腫瘍学 腫瘍学
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
背景:
- 培養されたヒト腫瘍細胞系とRNA腫瘍ウイルスが変異した細胞は,成長因子 (TGF) を変異する分泌をします.
- TGFは,表皮成長因子 (EGF) と受容体結合に競争し,細胞変容をインビトロで誘導することができる.
- ティロシンリン酸化活動は,腫瘍ウイルスの遺伝子変異と関連しています.
研究 の 目的:
- ヒトの腫瘍細胞でフォスフォチロシン濃度が上昇しているかどうかを調査する.
- EGF受容体に対するヒト腫瘍細胞によって生成されるTGFの効果を決定する.
主な方法:
- 人間の腫瘍細胞系を培養する.
- 腫瘍細胞におけるフォスフォチロジンレベルを分析する.
- EGF受容体のチロシンリン酸化部位に対するTGFの影響を評価する.
主要な成果:
- 人間の腫瘍細胞はTGFsを分泌する.
- これらの細胞によって生成されるTGFは,160,000分子量 (160K) のEGF受容体の特定のチロシン部位でリン酸化を誘導する.
結論:
- 人間の腫瘍細胞からのTGFは,EGF受容体のチロシンリン酸化を活性化させます.
- この発見は,腫瘍細胞によるTGF分泌と,EGF受容体のシグナル伝達経路の変化を関連付けています.
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