周期性アシルデプシペプチド抗生物質の構成動態の制限により,抗菌活性が向上する
Daniel W Carney1, Karl R Schmitz, Jonathan V Truong
1Department of Chemistry, Brown University , 324 Brook Street, Providence, Rhode Island 02912, United States.
Journal of the American Chemical Society
|January 16, 2014
まとめ
新しい循環性アシルデプシペプチド (ADEP) 抗生物質は,抗菌活性が強化されていることを示しています. 薬剤化学によるコンフォーマーションの安定化により,ClpPペプチダゼの結合と活性化が改善され,細菌の殺戮が著しく強化されます.
科学分野:
- 薬用化学 薬用化学について
- 抗菌剤 抗菌剤とは
- 分子生物学は分子生物学である.
背景:
- 循環性アシルデプシペプチド (ADEP) 抗生物質は,ClpPペプチダゼを標的とした新しい抗菌剤のクラスを表しています.
- 以前の医薬品化学の取り組みは,ADEPの治療的可能性を高め,薬理学的負債に対処してきました.
- ADEPの生物活性構成は,ペプチドラクトン核内のトランスアニュラルの水素結合によって安定させられる.
研究 の 目的:
- 構成的制約による生物活性ADEP構成の安定化を調査する.
- ClpPペプチダゼ結合と活性化に対する硬化ADEP類の影響を評価する.
- 形状的に制約されたADEP誘導体の抗菌活性を評価する.
主な方法:
- 安定相互作用を特定するためにADEP-ClpP複合体の構造分析.
- ADEPのコア内で構成上の制約を導入するための医薬品化学の修正.
- ダイウテリウム交換運動測定により,生物活性コンファーマーの安定性を確認する.
- ClpPの結合および活性化運動を決定するインビトロアッセイ.
- 関連するバクテリア菌株に対する抗菌活性の決定.
主要な成果:
- ペプチドラクトン核内のアミノ酸を慎重に交換することで,ADEPの形状を安定させました.
- 形状的に制約されたADEPは,より低い濃度でClpPペプチダゼの結合と活性化が強化されたことを実証しました.
- 酸化したADEPの類型は,天然の製品構造と比較して,抗菌活性が1200倍まで増加した.
結論:
- 構成動態の合理的調節は,ADEPsのような天然製品の生物活性性を高めるための実行可能な戦略です.
- ADEPの生物活性構造の安定化により,抗菌剤としての効能が著しく向上します.
- このアプローチは,細菌感染症と戦うために次世代の抗生物質を開発する見込みです.
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