バクテリアのフォスフォパントオセノイルシステイン合成酵素の選択的阻害剤
James D Patrone1, Jiangwei Yao, Nicole E Scott
1Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109-1065, USA.
Journal of the American Chemical Society
|November 12, 2009
まとめ
研究者らは,細菌のフォスフォパントテノリシステイン合成酵素 (PPCS) を阻害する重要な中間物質の新しい模倣を設計した. これらの化合物は,バクテリアのPPCSに対する高い選択性を示し,新しい抗菌療法のための可能性を秘めています.
科学分野:
- バイオケミストリー バイオケミストリー
- 酵素阻害は酵素を阻害する.
- ドラッグ・ディスカバリー・ドリッグ・ディスカバリー・ドリッグ・ディスカバリー・ドリッグ・ディスカバリー
背景:
- 細菌のフォスフォパントテノリシステイン合成酵素 (PPCS) は,細菌の成長と生存に不可欠です.
- PPCSは,シチジラート中間体を通して,フォスフォパントテノイルシステイン (PPC) の合成を触媒化する.
- バクテリアのPPCSとヒトのPPCSの核塩基結合部位には違いがある.
研究 の 目的:
- フォスフォパントテノイルシチジラート中間物質の模倣剤を設計・合成する.
- バクテリアのPPCS.の潜在的阻害剤としてこれらのミミクスを評価する.
- 細菌対ヒトPPCSに対するこれらの阻害剤の選択性を評価する.
主な方法:
- フォスフォパントテノイルシチジラートの化学合成を模倣する.
- 様々なバクテリア種とヒトから精製されたPPCSを用いたインビトロ酵素測定法.
- 酵素-阻害剤の相互作用の運動分析.
主要な成果:
- 新しいフォスフォパントセノイルシチジラートミミクが成功して合成されました.
- 化合物は,バクテリアのPPCSの強力な阻害を示した.
- ヒトのPPCSに比べて,細菌のPPCSには有意な選択性 (最大1000倍) が観察されました.
- フォスフォディエステル中間ミミックは,E. faecalis PPCS.に対するゆっくりと発症し,緊密に結合する運動性を示した.
結論:
- 合成されたミミックは,細菌のPPCSを効果的に抑制します.
- これらの化合物は有望な選択性を示し,好ましくバクテリアの酵素を標的とする.
- この発見は,新しい抗菌戦略として,PPCS阻害剤の開発を支持する.
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