LSD1とWNTの転写を混乱させ,AMLの分化をシネジスティックに誘導する

Amir Hosseini¹, Abhinav Dhall², Nemo Ikonen³

¹Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK.

Nature

|April 16, 2025

まとめ

この研究では,LSD1抑制とGSK3抑制を併用することで,細胞の分化を促進し,マウスの生存率を向上させることで,急性骨髄性白血病 (AML) を効果的に治療することが示されました.

科学分野:

腫瘍学
分子生物学
ガン治療薬

背景:

細胞分化障害は骨髄性悪性腫瘍の重要な特徴です
ATRAやATOのような薬剤を用いた差別化治療は,急性プロミエロサイト性白血病において有効であるが,AMLにおけるより広範な適用性は不明である.

研究の目的:

急性骨髄性白血病 (AML) のLSD1阻害 (LSD1i) とGSK3キナーゼ阻害 (GSK3i) の併用による治療の可能性を調査する.
この組み合わせ療法で治療されたAML細胞の分化を誘発する基礎的分子機構を解明する.

主な方法:

既定のAML細胞系とヒトのAML細胞を同時にLSD1iとGSK3iで治療する.
患者から派生した異種移植マウスモデルにおける治療的差異化,腫瘍負担,生存の評価.
遺伝子発現分析,転写因子誘導 (IRF7,β-カタニン),経路分析 (I型インターフェロン,WNT経路) を含むメカニズム研究.

主要な成果:

LSD1iとGSK3iの組み合わせは,AML細胞の治療的分化を強力に促進しました.
この組み合わせは,腫瘍の負荷を軽減し,臨床前AMLマウスモデルで生存期間を大幅に延長しました.
メカニズム的に,治療はタイプIインターフェロン経路を活性化し,プロ腫瘍性WNTシグナル伝達と細胞サイクル遺伝子を抑制しました.

結論:

LSD1とGSK3の同時抑制は,AMLに対する有望な治療戦略です.
組み合わせ治療は,転写プログラムを再構成して,幹を抑制し,差別化を促進し,他のWNT駆動がんに潜在的な影響を及ぼします.

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