α2A-アドレナゲン受容体を通して作用する非オピオイド鎮痛剤の構造に基づく発見
Elissa A Fink1,2, Jun Xu3,4, Harald Hübner5
1Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA.
まとめ
研究者らは,アルファ2Aアドレナリゲン受容体 (α2AAR) に対して,数百万個の分子を事実上スクリーニングすることによって,新しい非鎮痛痛剤を発見しました. これらの新しいアゴニストは オピオイドや現在のα2AAR薬の副作用なしに 痛みを和らげます
科学分野:
- 薬理学について
- 薬剤化学
- 神経科学
背景:
- 非オピオイド鎮痛剤は痛みの管理に非常に望ましい.
- デキスメドトミジンなどの既存のアルファ2Aアドレネルゲン受容体 (α2AAR) アゴニストは鎮静作用を引き起こす.
- 非鎮静性疼痛療法を開発するには新しい化学型が必要です.
研究 の 目的:
- 新しいα2AARアゴニストのための大規模な仮想ライブラリを計算的にスクリーニングする.
- 鎮痛作用があるが 鎮静作用のない化合物を特定する
- ノンオピオイドの痛み治療薬の 新種の化学型を発見するためです
主な方法:
- α2AARに対する301百万以上の仮想分子の計算分子ドッキング.
- 効能とシグナリングバイアス (Gi/Go) について特定されたリガンドのインビトロ特性.
- 鎮痛作用のin vivo検証と痛みのモデルにおける鎮静作用の評価
主要な成果:
- 部分的アゴニズムとGi/ Goシグナリングの好みを有する17の強力なα2AARリガンド (12nMまで) を特定した.
- 実験構造はドッキング予測とガイドされた最適化を確認した.
- "7075"と"PS75"を含むいくつかの化合物は 鎮静剤なしで 標的の鎮痛作用を示した.
結論:
- 新しいα2AARアゴニストの発見 強力な鎮痛作用と鎮静作用なし
- これらの化合物は,非オピオイド性疼痛管理のための有望な治療方法を表しています.
- この発見はオピオイドや鎮静性α2AAR薬の代替案です
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