クルクソン・ディテルペンの総合成と標的の識別
Chengsen Cui1, Brendan G Dwyer2, Chang Liu1
1Department of Chemistry and Center for Cancer Research, Purdue University, West Lafayette, Indiana 47907, United States.
Journal of the American Chemical Society
|March 11, 2021
まとめ
研究者らはカルクソン・ディターペンの最初の完全合成を達成し,BRCA1関連ATM活性化剤1 (BRAT1) を主要な抗がん標的として特定した. カルクソンDはBRAT1を阻害し,DNA損傷反応と癌細胞の移動に影響を与えます.
科学分野:
- 自然製品合成
- 薬剤化学
- 化学生物学
背景:
- クルクソン・ディターペンは独特の [6 - 7 - 5] 三循環構造を持ち,強力な抗がん作用を示します.
- この研究以前は,クルクソンの全合成と抗癌メカニズムは未解明であった.
研究 の 目的:
- カーカソンの天然産物の 完全合成を初めて達成する
- 抗がん作用の解明と,クルクソンの細胞標的の特定.
主な方法:
- [3,3]-シグマトロピック再配列とFeCl3-促進カスケード反応を用いた収束合成.
- タンパク質の標的を特定するために アルキンタグの探査機を使用する 化学プロテオミクス
- カルクソンDがBRAT1活性と癌細胞のフェノタイプに及ぼす機能的影響を評価する試験.
主要な成果:
- クルクソンA,B,C,DとディメリクルソンAの最初の完全合成は9〜12のステップで達成される.
- クルクソンDの直接的な細胞標的としてBRCA1関連ATM活性化剤1 (BRAT1) の特定
- カルクソンDはBRAT1を阻害し,DNA損傷反応を低下させ,癌細胞の移動を減少させ,エトポシドの有効性を高めます.
結論:
- この研究は,複雑なクルクソン・ディターペンの合成経路を効率的に提供し,その提案された生物合成経路を検証した.
- BRAT1は,クルクソンベースの抗がん治療の新薬標的として特定されています.
- カルクソンDのBRAT1抑制は,特に組み合わせ治療において,がん治療の新たな戦略を提供します.
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