In vivoの相互作用スクリーニングでは,肝臓に由来する転移の制約が示されている
Costanza Borrelli1, Morgan Roberts1, Davide Eletto1
1Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland.
Nature
|July 24, 2024
まとめ
研究者達は 肝臓のタンパク質プレキシンB2が がん細胞が 肝臓にコロニーを植え付けるのに 欠かせないことを発見しました この相互作用を阻害することで 肝臓の転移を防ぎ,二次腫瘍を予防する新たな治療策が提供されます.
科学分野:
- 癌 生物学
- 転移に関する研究
- ヘパトロジー
背景:
- 転移した腫瘍細胞のごく一部のみが 転移を成功させるので,環境的な制約が大きいことがわかります.
- 転移性発芽と肝臓の植民を制御する宿主因子は,ほとんど不明のままである.
- 宿主と腫瘍の相互作用を理解することは,効果的な抗転移療法の開発に不可欠です.
研究 の 目的:
- 肝臓の転移を制御する宿主因,特に肝細胞の相互作用を体系的に調査する.
- 結腸直腸癌,臓癌,メラノーマにおける肝臓コロニー化の新型宿主由来レギュレータを特定する.
- 肝臓転移の基礎となる分子メカニズムを明らかにし,潜在的な治療標的を探求する.
主な方法:
- トランポゾン技術と光ニッチラベルを組み合わせた in vivo CRISPR アクティベーションスクリーンの開発
- 肝細胞と転移細胞の相互作用をシンジェニックマウスモデルで体系的に調査する.
- 腫瘍細胞適応におけるプレキシンB2,セマフォリン,KLF4を含む分子経路の解剖.
主要な成果:
- プラキシンB2は,大腸がん,臓がん,メラノーマにおける肝臓コロニゼーションの重要な宿主由来調節剤として特定された.
- 腫瘍細胞のクラスIVセマフォリンと相互作用し,KLF4を調節し,コロニー化に必要な上皮の特性を促進する.
- プレキシンB2セマフォリン軸を遮断することで,臨床前モデルの肝臓転移が有意に廃止されました.
結論:
- 肝臓パレンキマ信号は,発散した腫瘍細胞の初期生殖と適応に不可欠です.
- 結腸直腸がん (CRC) の肝臓への転移には,プレキシンB2-セマフォリンKLF4軸によって誘導される上皮化が必要である.
- プラキシンB2セマフォリン軸を標的にすることは,肝臓転移を予防する有望な治療戦略です.
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