前編成型サイクロペプチド阻害剤によるAF9 YEATS領域の選択的標的化
Yixiang Jiang1, Guochao Chen2,3, Xiao-Meng Li1
1Departments of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
Journal of the American Chemical Society
|December 11, 2020
まとめ
研究者は,AF9 YEATSドメインを選択的に標的とする新しいサイクロペプチド阻害剤,JYX-3を開発しました. この突破は,がんのような YEATS領域に関連した病気に対する薬の開発の有望な新しい道を提供します.
科学分野:
- エピジェネティクス
- 分子生物学
- 薬物の発見
背景:
- YEATSドメインはヒストンライシンアセチル化 (Kac) とクロトニル化 (Kcr) の表遺伝子読者である.
- 機能不全のYEATS-Kac/Kcrの相互作用は,がんを含むヒトの病気に関与しています.
- YEATSドメインは有望な治療目標です
研究 の 目的:
- YEATS領域の選択的阻害剤を開発し,特にAF9とENL YEATS領域を区別する.
- 選択性を得るための新しい結合部位を特定する.
- 細胞環境における選択的阻害剤の有効性を検証する.
主な方法:
- アシリシン結合ポケットとは異なる近接アロステリック部位の特定
- 形状的に前組織化されたサイクロペプチドの設計と合成.
- 結合親和性と選択性を決定する生化学的測定.
- 標的の関与と機能的効果を評価するための細胞ベースのアッセイ
主要な成果:
- AF9 YEATSとENL YEATSを区別する新しい近接部位が特定されました.
- アシリシンポケットと近接部位を組み合わせた標的化により,選択的なAF9 YEATS阻害剤が得られました.
- サイクロペプチドJYX-3は,ENL YEATSよりもAF9 YEATSに38倍高い結合親和性を示した.
- JYX-3は細胞内のAF9を誘導し,そのクロマチンの増殖を妨害し,標的遺伝子転写を抑制した.
結論:
- YEATS領域,特にAF9の選択的抑制は,アシリシンポケットと隣接するアロステリックサイトの両方をターゲットにすることで達成できます.
- JYX-3はAF9 YEATSの強力で選択的な阻害剤である.
- この研究は,YEATS領域に関連した病理学の新しい治療法の開発のための基盤を提供します.
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