プラズモジアム・プロテアソーム阻害剤の特異性の決定因子の定義
Euna Yoo, Barbara H Stokes, Hanna de Jong
1Drug Discovery and Development Centre (H3D) , University of Cape Town , Rondebosch 7701 , South Africa.
Journal of the American Chemical Society
|August 16, 2018
まとめ
新しい抗マラリア薬を開発した研究者は,高度に選択的なプラズモジアム・プロテアソーム阻害剤を特定しました. これらの化合物は,アルテミシニン (ART) ベースの治療法と相乗効果を示し,マラリア寄生虫の除去に有効です.
科学分野:
- 寄生虫学
- 薬剤化学
- 薬物の発見
背景:
- プラズモディウムプロテアソームは抗マラリア薬の開発において重要な標的であり,寄生虫の生命段階において不可欠である.
- プロテアソーム阻害剤は,宿主プロテアソームの重要な役割により,高い選択性を必要とする課題に直面しています.
- 既存の寄生虫特異プロテアソーム阻害剤は,臨床的進歩のために選択性の改善を必要とする.
研究 の 目的:
- プラズモディアム・プロテアソーム阻害剤の選択性を高める決定因子を特定する.
- 薬理学的特性を改善した強力で選択的な抗マラリア化合物を開発する.
主な方法:
- 選択性の決定因子を特定するために合成フッ素基板のスクリーニング.
- エレクトロフィリックな弾頭とペプチド結合要素に焦点を当てた構造-活性関係研究.
- 鉛化合物の効能,選択性,溶解性,代謝安定性,および経口生物利用性を最適化する.
主要な成果:
- 最適な電離弾頭とペプチド結合要素は,高い阻害剤の選択性にとって極めて重要です.
- ホスト細胞の毒性は,ヒトのβ2およびβ5サブユニットの共抑制度と相関する.
- プラズモディウムタンパク質への選択性>3度の化合物が見つかりました.
- 最適化された分子は高効力,選択性,好ましい薬理学プロファイルを示した.
結論:
- 新しい合成フッ素基板は,高度に選択的なプラズモジアムタンパク質阻害剤の発見を可能にします.
- これらの阻害剤は,アルテミシニン (ART) ベースの治療法と有意な相乗効果を示しています.
- 開発された化合物は,マウスモデルで有効な口服生物利用可能な抗マラリア薬です.
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