副作用が軽減されたオピオイド鎮痛剤の構造に基づく発見
Aashish Manglik1, Henry Lin2, Dipendra K Aryal3
1Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California 94305, USA.
Nature
|August 18, 2016
まとめ
研究者はPZM21という新しい化合物を発見し,痛みを和らげるためにミュオピオイド受容体 (μOR) を活性化する. モルヒネとは違って PZM21は 呼吸阻害のような副作用を最小限に抑えながら 強力な鎮痛剤を提供します
科学分野:
- 薬理学について
- 神経科学
- 薬剤化学
背景:
- モルヒンはμオピオイド受容体 (μOR) アゴニストであり,痛みを効果的に治療しますが,危険な副作用を引き起こします.
- オピオイドの副作用はβ-アレスティン経路シグナル伝達と関連しており,Gタンパク質シグナル伝達は鎮痛を媒介する.
研究 の 目的:
- μORを標的にする新しい非オピオイドスキャファッドを特定する.
- 伝統的なオピオイドと比較して副作用が少ない μOR選択化合物を開発する.
主な方法:
- μOR構造に対して300万個以上の分子をコンピューターでドッキングする.
- PZM21を作成するための構造ベースの最適化.
- PZM21のGタンパク質とβアレスティンのシグナル伝達,鎮痛効果,およびマウスの副作用の評価.
主要な成果:
- 既知のオピオイドとは無関係な新型エスカファッドが特定されました
- 開発されたPZM21は,最小限のβ-アレスティン-2募集でμORを選択する強力なGi活性化剤です.
- PZM21は,呼吸抑制や補強作用なしに,鎮痛剤の効果をマウスで示した.
結論:
- PZM21はμORシグナル伝達経路の解剖に役立つ探査機である.
- PZM21は,改善された安全性プロファイルを持つオピオイドベースの疼痛管理のための有望な治療リードです.
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