リバーシブルでリバーシブルでないコバルントPROTACを用いた効率的な標的分解
Ronen Gabizon1, Amit Shraga1, Paul Gehrtz1
1Department of Organic Chemistry, The Weizmann Institute of Science, Rehovot 7610001, Israel.
Journal of the American Chemical Society
|May 6, 2020
まとめ
リバーシブル共性PROTACは,従来の方法の限界を克服して,標的型タンパク質分解のための強力で選択的なアプローチを提供します. この研究により,ブルトン菌を分解する効果が示されました.
科学分野:
- 化学生物学
- 薬物の発見
- 分子分解技術
背景:
- タンパク質分解標的キメラ (PROTACs) は,標的タンパク質の分解を可能にしますが,強力な結合剤の必要性によって制限されます.
- 結合性PROTACは効力を高めますが,PROTACの触媒的性質を否定することができます.
- リバーシブルコバルントPROTACは,コバルント結合と触媒再生の利点を組み合わせることを目的としています.
研究 の 目的:
- 標的タンパク質の分解に対する可逆的共性PROTACの有効性を調査する.
- 非共性および不可逆的共性PROTACに対する可逆的共性PROTACの性能を比較する.
- 臨床的に重要なモデルシステムであるブルトンチロシンキナーゼ (BTK) でPROTACを評価する.
主な方法:
- BTKを標的とした非共性,不可逆的共性,および可逆的共性PROTACの設計と合成.
- タンパク質分解効率 (DC50) と分解率の評価
- 患者由来慢性リンパ球性白血病細胞におけるB細胞活性化阻害とBTK分解の評価
主要な成果:
- 試験したすべてのPROTACは,効率的なBTK分解 (<10nM DC50,>85%の分解) を達成した.
- リバーシブルな共性PROTACは強力な分解を示し,1つの化合物は選択性が向上した.
- PROTACsは,IBRUTINIBと比較して,B細胞活性化と強力なBTK分解を優れていることを示した.
結論:
- リバーシブル共性PROTACは,標的型タンパク質分解に効果があり,既存の方法よりも利点があります.
- 開発されたPROTACは慢性リンパ球性白血病のようなB細胞悪性腫瘍の治療に有望である.
- これらの発見は,挑戦的な治療目標のための共性PROTACの開発を支持します.
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