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臓がんの治療とモニタリングのためのLIF媒介のパラクリン相互作用を標的とする
Yu Shi1, Weina Gao2,3, Nikki K Lytle4,5
1Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA. yshi@salk.edu.
Nature
|April 19, 2019
まとめ
臓のステラ細胞からの白血病抑制因子 (LIF) は臓がんの進行と薬剤耐性を誘発する. LIFまたはその受容体を阻害すると,LIFが臓管内腺がん (PDAC) の循環バイオマーカーであることを示します.
科学分野:
- 腫瘍学
- 癌 生物学
- 腫瘍の微小環境
背景:
- 管腺がん (PDAC) は,診断が遅れて薬剤耐性があるため,予後が悪い.
- 活性化された臓の星状細胞 (PSC) は,細胞間のコミュニケーションを通じてPDACの進行と抵抗を促進する,密集したストロマを作り出します.
- PSCと臓がん細胞 (PCC) の相互作用は悪循環を形成し,腫瘍形成と治療失敗を悪化させます.
研究 の 目的:
- PDACにおける治療と診断のターゲットとして,PSCとPCC間のパラクリン通信を調査する.
- このクロストークを駆動する 鍵となる媒介者と 分子機構を特定する
- この通信経路を標的とした 治療の可能性を評価する
主な方法:
- PSC と PCC の間の分泌因子の体系的なタンパク質学的調査.
- 白血病抑制因子 (LIF) の薬理学的阻害およびその受容体 (LIFR) の遺伝的消去.
- PDACマウスモデルにおける腫瘍の進行,化学療法の有効性,癌細胞の分化,および上皮細胞- 介質細胞移行 (EMT) の評価.
- マウスモデルとヒトPDAC組織におけるLIF生成の分析,および循環中のLIFレベルと治療応答の相関.
主要な成果:
- 白血病抑制因子 (LIF) は,PCCに作用する活性化PSCによって分泌される重要なパラクリン因子として特定されました.
- 薬学的なLIF阻害とLifr消去は,PDACマウスモデルで腫瘍の進行を著しく遅らせ,化学療法の有効性を高めました.
- LIF調節された癌細胞の分化とEMT状態を標的とし,生存期間を延長します.
- 臓の異常なLIF生成はPDACの病原性と相関し,循環中のLIFレベルは治療反応を反映した.
結論:
- LIFは,PSCとPCCの間のコミュニケーションを媒介することによって,PDACの腫瘍形成と進行に重要な役割を果たします.
- LIFをターゲットにすることは,薬剤耐性を克服し,PDACの治療結果を改善するための有望な治療戦略です.
- 循環中のLIFレベルは,PDACの診断と治療応答のモニタリングのための潜在的なバイオマーカーとして機能します.
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