ブリッジド・プロテオリシス・ターゲティング・キメラ (PROTAC) は,薬剤耐性の標的の劣化を可能にします
Yan Xiong1, Yue Zhong1, Hyerin Yim1
1Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029, United States.
Journal of the American Chemical Society
|November 30, 2022
まとめ
新しいブリッジドプロテオリシス・ターゲティング・キメラ (PROTAC) 戦略により,以前は薬剤で処理できなかったタンパク質の分解が可能になる. このアプローチは,小分子結合物質が欠けているタンパク質であるサイクリンD1を分解し,新しい治療法を提供することに成功した.
科学分野:
- 生物化学
- 分子生物学
- 薬物の発見
背景:
- タンパク質分解標的キメラ (PROTACs) は,標的型タンパク質分解のための新興治療法である.
- 現在のPROTACは,小分子結合物質が利用可能なタンパク質に限られており,多くの"薬効性のない"標的は除外されています.
- サイクリンD1は癌に関与する重要な細胞循環調節剤であるが,小分子結合物質は欠けている.
研究 の 目的:
- 小分子結合物質が欠けているタンパク質を標的とする新しい"ブリッジド PROTAC"戦略を導入する.
- この新しいアプローチを用いて,サイクリンD1のクラス初の分解剤を開発する.
- ブリッジド PROTAC 戦略と開発された分解剤の有効性を評価する.
主な方法:
- サイクリンD1結合パートナーリガンドをE3リガゼリガンドと結合することによって,ブリッジされたPROTACの開発.
- von Hippel-Lindau (VHL) E3リガスを標的型タンパク質分解に使用する.
- サイクリンD1の分解と癌細胞増殖への影響の評価
主要な成果:
- CDK4/ 6- サイクリンD1複合体を標的とする橋渡しPROTACであるMS28の開発に成功しました.
- MS28は,既存のCDK4/ 6阻害剤を上回る,効率的かつ迅速なサイクリンD1の分解を示した.
- MS28はCDK4/ 6阻害剤や退廃剤よりも癌細胞増殖を有意に抑制しました.
結論:
- ブリッジされたPROTAC戦略は,以前は薬剤で処理できなかったタンパク質をターゲットにするために多用途のプラットフォームを提供します.
- MS28はサイクリンD1を標的とする新しい治療薬であり,がん治療において有望である.
- このアプローチは,薬剤の発見と開発のための PROTAC 技術の範囲を拡大します.
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