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2型糖尿病の治療の可能性のある高度に選択的で強力なPTP-MEG2阻害剤です
Sheng Zhang1, Sijiu Liu, Rongya Tao
1Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, Indiana 46202, USA.
Journal of the American Chemical Society
|October 19, 2012
まとめ
研究者らは,細胞シグナル伝達に不可欠な酵素であるタンパク質チロシンフォスファタゼ (PTP) の強力で選択的な阻害剤を作成するための新しい化学戦略を開発しました. これらの新しいPTP阻害剤は,インスリン感受性およびグルコースホメオスタシスの改善に有望であることが示されています.
科学分野:
- バイオケミストリーと分子生物学
- 薬理学 薬理学とは
- メタボリック疾患
背景:
- タンパク質チロシンフォスファタゼ (PTPs) は,細胞信号伝達経路の重要な調節体です.
- 特定の,細胞に浸透する阻害剤の欠如は,生理学と疾患におけるPTPの研究を制限しています.
- PTP-MEG2は肝臓のインスリンシグナル伝達と代謝失調に関与しています.
研究 の 目的:
- PTP-MEG2の強力で選択的な阻害剤を開発し,肝臓のインスリンシグナル伝達を標的とする.
- PTPスーパーファミリーに特異な阻害剤を作成するための一般化可能な戦略を実証する.
- 肥満のマウスモデルで開発されたPTP阻害剤のインビボ有効性を評価する.
主な方法:
- 非水解性pTyrミメティック (F(2) Pmp) を最適化するために,段階的に集中したライブラリアプローチが使用されました.
- PTP-MEG2阻害剤複合体の結晶構造は,阻害剤の設計を導くために決定されました.
- インビトロアッセイでは,阻害剤の効能と選択性を評価し,細胞活動とインビボ有効性は,食事誘発肥満マウスで試験された.
主要な成果:
- F(2) Pmpスキャフォードは,非常に強力で選択的なPTP-MEG2阻害剤に成功裏に変換されました.
- 構造分析により,活性および周辺結合部位を巻き込むことによって特異性を可能にする重要な相互作用が明らかになった.
- PTP-MEG2阻害剤は,インスリンシグナル伝達,インスリン感受性,および肥満マウスのグルコースホメオスタシスを改善する重要な細胞活性を示した.
結論:
- F(2) Pmpスキャフォールドは,強力で選択的なPTP阻害剤を産出するために効果的に修正され, in vivoで強力な有効性を有します.
- この化学戦略は,他のPTPファミリーメンバーに対する特定の阻害剤の開発に広く適用できます.
- PTP-MEG2をターゲットにすることは,インスリン抵抗性や2型糖尿病などの代謝障害に対する有効な治療戦略を提供します.
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