Aβ集積に対する活性が強化されたヘテロディヴァラントリンクされたマクロサイクリックβシート: 2つのサイトは1つよりも優れている
Pin-Nan Cheng1, Ryan Spencer, R Jeremy Woods
1Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, USA.
Journal of the American Chemical Society
|July 26, 2012
まとめ
新しい異変性マクロサイクリックペプチドは,単価または同等性バージョンと比較して,アミロイドベータ (Aβ) アグリゲーションを抑制する活性が著しく向上しています. これらの化合物は,アミロイド系疾患を標的とした有望な戦略を提供します.
科学分野:
- バイオケミストリー バイオケミストリー
- 神経科学は神経科学である.
- 薬用化学 薬用化学について
背景:
- アミロイドベータ (Aβ) アグリゲーションは,アルツハイマー病の特徴です.
- Aβ集積の有効な阻害剤の開発は,治療的介入にとって極めて重要です.
研究 の 目的:
- 合成し,Aβ集積を阻害する効果のために,異変対称的にリンクされたマクロサイクリックβシートを評価する.
- ヘテロディヴァラント阻害剤の活性を,そのモノヴァラントおよびホモディヴァラント同位体と比較する.
主な方法:
- モノヴァレンント (1a,1b),ホモディヴァレンント (4,5),ヘテロディヴァレンント (6) のリンクされたマクロサイクルβシートの合成.
- チオフラビンTの光測定は,Aβ ((1-40)) アグリゲーション運動をモニタリングする.
主要な成果:
- ヘテロディヴァラント関連マクロサイクリックβシート (6) は,単価 (1a,1b) または同価 (1a,1b) または同価 (4,5) 化合物よりも,同等濃度でAβ集積の6〜8倍の阻害を示した.
- ヘテロディヴァラント阻害剤のサブソイキオメトリック濃度でも,著しい集積遅延が観察されました.
- 提案されたモデルは,多領域の相互作用を通じて,β構造のAβオリゴーマーにヘテロディヴァラント阻害剤の強化された結合を示唆しています.
結論:
- ヘテロディヴァラントのマクロサイクリックβシートは,単価および同価の類似体と比較して,Aβ集積の優れた阻害剤です.
- アミロイド原性ペプチドの複数の領域を標的とする多価阻害剤は,治療の可能性を高めます.
- これらの発見は,アミロイド系疾患に対するマルチターゲティング阻害剤の開発を支援しています.
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