共有結合型アロステリック分子グルーによるNRF2依存性癌増殖の抑制
Nilotpal Roy1, Tine Wyseure1, I-Chung Lo2
1Vividion Therapeutics (United States) San Diego United States.
Cancer discovery
|December 19, 2025
まとめ
新規薬剤VVD-065は、NRF2の分解を促進することによりNRF2経路を標的とする。このNRF2阻害剤は、腫瘍増殖の抑制とがん治療薬への感受性の向上に有望であることを示している。
科学分野:
- 腫瘍学
- 分子生物学
- 創薬
背景:
- NRF2転写因子は、癌細胞の生存に不可欠であり、酸化ホメオスタシスと代謝再プログラミングを促進する。
- NRF2活性腫瘍は、しばしばNRF2に依存し、化学療法や放射線療法などの従来の治療法に抵抗性を示す。
研究 の 目的:
- NRF2経路を標的とする新規阻害剤VVD-065の特性評価。
- 第一級のアロステリック分子グルー阻害剤としてのVVD-065の作用機序の解明。
主な方法:
- KEAP1とVVD-065の相互作用、特にCys151における相互作用を調査した。
- KEAP1-CUL3ユビキチンリガーゼ複合体およびNRF2分解に対するVVD-065の効果を評価した。
- NRF2依存性腫瘍増殖の阻害および癌細胞の化学療法/放射線療法への感受性向上に対するVVD-065の有効性を評価した。
主要な成果:
- VVD-065はKEAP1 Cys151に共有結合し、KEAP1-CUL3複合体形成を促進してNRF2分解を亢進させる。
- これまでの化合物とは異なり、VVD-065はKEAP1-CUL3複合体を安定化させるが、Cys151を標的とする化合物は複合体を不安定化させる。
- VVD-065はNRF2依存性の癌において、腫瘍増殖の抑制と化学療法/放射線療法への感受性の向上を示した。
結論:
- VVD-065は、アロステリック分子グルー機構を介したNRF2分解の標的化により、新規治療戦略を表す。
- KEAP1 Cys151はNRF2安定性の調整可能な調節因子として機能し、VVD-065はこの相互作用を調節する新たなアプローチを提供する。
- 本研究結果は、癌治療のためのVVD-065の第I相臨床試験の継続を支持するものである。
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