腫瘍性KRASは,ストロマルの相互作用によって腫瘍細胞の信号伝達を調節する
Christopher J Tape1, Stephanie Ling2, Maria Dimitriadi2
1The Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Cell
|April 19, 2016
まとめ
臓がんにおける腫瘍性KRAS (KRAS(G12D)) シグナル伝達には,腫瘍およびストロマ細胞が関与する. この相互信号は腫瘍遺伝子の効果を拡大し,腫瘍の成長と代謝に影響します.
科学分野:
- 腫瘍学
- 分子生物学
- 癌 の 信号
背景:
- KRAS ((G12D)) のような腫瘍性変異は 細胞の信号伝達経路を変えることで 癌を誘発します
- 腫瘍細胞のシグナル伝達は伝統的に細胞自律性と考えられており,腫瘍の微小環境との相互作用は無視されている.
- 癌における腫瘍遺伝子の機能の包括的な見方をするには,ヘテロセルラー信号の理解が不可欠である.
研究 の 目的:
- 腫瘍細胞の信号伝達の制御における腫瘍性KRAS (G12D) の役割を調査する.
- 腫瘍細胞のフォスフォプロテオームとプロテオームに対する相互信号の影響を分析する.
- 腫瘍細胞の増殖,アポトーシス,ミトコンドリア機能に異細胞信号がどのように影響するかを決定する.
主な方法:
- 多変性フォスフォプロテオミクスと組み合わせた細胞特異のプロテオームラベルを使用した.
- 管腺がん (PDA) 細胞における異細胞性KRAS ((G12D)) 信号を分析した.
- 繊維芽細胞の関与と その後の相互信号を調査した.
主要な成果:
- 腫瘍細胞のKRAS ((G12D)) は繊維芽細胞を誘導し,それらは腫瘍細胞の相互信号を発信する.
- 相互信号は,セル自律型KRAS ((G12D)) と比較して,制御された信号ノードの数を倍増させる.
- 相互信号は腫瘍細胞のフォスフォプロテオームとプロテオームを変化させ,IGF1R/AXL-AKT軸経由で増殖,アポトーシス,ミトコンドリア容量に影響を与える.
結論:
- 腫瘍遺伝子のシグナル伝達は細胞自律的なプロセスではなく 細胞自律的なプロセスである.
- 細胞自律的視野は がんにおける腫瘍遺伝子のシグナル伝達の全範囲を過小評価している.
- 異細胞の信号伝達経路をターゲットにすることで 臓がんの新たな治療戦略が提供されるかもしれません
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