ステロール抽出運動を調節すると,腎臓を保存するポリエンの抗真菌剤が得られます
Arun Maji1,2,3,4, Corinne P Soutar2,3,5, Jiabao Zhang2,3
1Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
Nature
|November 8, 2023
まとめ
新しい抗真菌薬を開発した研究者は 細胞膜ではなく真菌のエルゴステロール抽出をターゲットにすることで AM-2-19のような強力で腎臓を節約するポリエネ抗真菌薬が 開発されたことを発見しました
科学分野:
- 薬剤化学
- 菌類学
- 薬理学について
背景:
- 伝統的なポリエンの抗菌剤の開発は,欠陥のある膜浸透モデルに基づいていました.
- アンフォテリシンBは重要な抗真菌剤で 細胞膜からステロールを抽出することで 腎臓に毒性をもたらします
- アンフォテリシンBの抗真菌作用の主なメカニズムは,膜破壊ではなく,真菌エルゴステロルの抽出である.
研究 の 目的:
- 腎臓に効くポリーンの抗真菌剤を開発する
- アンフォテリシンBに関連する腎臓の毒性を理解し,軽減する.
- 分子相互作用のダイナミクスを調整して 新しい抗菌剤を合理的に設計する
主な方法:
- アンフォテリシンBの抗真菌と毒性のメカニズムを調査した.
- アンフォテリシンBステロール複合体の高解像度構造解析を用いた.
- AM-2-19を含むアンフォテリシンBの構造派生物を設計し,合成し,その有効性と毒性を評価した.
主要な成果:
- コレステロールの抽出がアンフォテリシンBの腎への毒性の要因として特定された.
- コレステロールと結合することなく,選択的かつ迅速に真菌エルゴステロルを抽出する腎節分剤 (AM-2-19) を開発した.
- AM- 2-19は侵入性キノコ感染症の臨床前モデルにおいて強力な抗真菌活性,耐性回避,および有効性を示した.
結論:
- 分子相互作用のダイナミクスに基づいた合理的な設計は,改善された抗真菌療法をもたらすことができます.
- エルゴステロール抽出をターゲットにすることで 強力で安全で 耐性回避的な抗真菌薬の開発に 有望な戦略が生まれます
- 新型ポリエネAM-2-19は 生命を脅かす真菌感染症の治療において 重要な進歩を示しています
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