細胞RNAメチルトランスファーゼの抑制は,インフルエンザウイルスのキャピングと複製を無効化します
Yuta Tsukamoto1, Takahiro Hiono2,3, Shintaro Yamada1
1Institute of Cardiovascular Immunology, Medical Faculty, University Hospital Bonn, University of Bonn, Bonn, Germany.
Science (New York, N.Y.)
|February 9, 2023
まとめ
ホスト2'-O-リボスメチルトランスフェラーゼ1 (MTr1) の改変は,インフルエンザウイルスの複製に極めて重要です. 新しい化合物であるトリフローロメチルチューバーシジン (TFMT) は,MTr1を阻害し,インフルエンザウイルスの複製を制限し,既存の薬と相乗効果を示しています.
科学分野:
- ウイルス学
- 分子生物学
- 薬物の発見
背景:
- オーソミキソウイルスとブニアウイルスは,宿主RNA5'キャップを"キャップスナッチング"でトランスクリプションに利用する.
- ホスト2'-O-リボスメチルトランスフェラーゼ1 (MTr1) のカップの修正は,インフルエンザAおよびBウイルスの複製に不可欠です.
研究 の 目的:
- インフルエンザウイルスの複製を制限するMTr1の阻害剤を特定する.
- 新型MTr1阻害剤の作用メカニズムを解明する.
主な方法:
- シリコ化合物のスクリーニングと機能分析
- MTr1抑制を評価する生化学的測定法
- ヒトの肺拡張体とマウスモデルでの研究
主要な成果:
- 新しい化合物であるトリフルオロメチルチューバーシジン (TFMT) は,MTr1阻害体として特定されました.
- TFMTはMTr1のS-アデノシル-l-メチオニン結合ポケットをターゲットとしています.
- TFMTは宿主キャップRNAとウイルスポリメラーゼ基本タンパク質2の相互作用を損なう.
- TFMTはヒトの肺エクスプラントと in vivo マウスモデルで有効性を示した.
- TFMTは,承認された抗インフルエンザ薬と相乗効果を示した.
結論:
- ホストMTr1はインフルエンザウイルスの複製を制限する重要な標的です.
- TFMTはMTr1を標的として,インフルエンザウイルスの複製を強力に抑制する.
- TFMTはインフルエンザの治療において有望な治療候補であり,併用療法として用いられる可能性がある.
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