アポトーシスイメージングのためのバイモダル光磁気共振コントラスト剤
Hao Li1, Giacomo Parigi2, Claudio Luchinat2
1Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology , Northwestern University , Evanston , Illinois 60208 , United States.
Journal of the American Chemical Society
|March 29, 2019
まとめ
新しいバイモダル光磁気共振 (FL-MR) 探査機CP1は,カスパース-3/7の活性を検出することによって,アポトーシスのリアルタイムモニタリングを可能にします. この探査機は,がん治療の評価を強化するために,敏感で選択的な二重FL-MRの活性化反応を提供します.
科学分野:
- バイオメディカル イメージング
- 分子イメージング
- 癌治療のモニタリング
背景:
- 効果的な癌治療は プログラムされた細胞死であるアポトーシスを誘発することに 依存しています
- 治療効果と薬物スクリーニングの評価には,アポトーシスのリアルタイムモニタリングが不可欠です.
- カスパース3/7はアポトーシス中に活性化される重要なバイオマーカーです.
研究 の 目的:
- 新型バイモダル光磁気共振 (FL-MR) 探査機 CP1の設計,合成,評価
- カスパース3/7の活性に対する FL-MRの同時活性化反応を達成する.
- アポトーシスの検出と治療の評価におけるCP1の有用性を実証する.
主な方法:
- CP1はDOTA- Gd (III) ケラート,結合誘発発光原体 (AIEgen) とカスパース-3/7基板 (DEVDペプチド) を組み合わせて合成された.
- カスパース-3/7に対するプローブのFL-MR反応は,in vitroで特徴づけられた.
- CP1は,アポプトティック細胞の光成像に使用された.
主要な成果:
- CP1は,カスパース-3/7に対する敏感で選択的な二重FL-MR活性化反応を示した.
- この探査機は,アポプトシス細胞の光画像を成功させました.
- CP1は,アクティブ/非アクティブ剤の正確な定量化とMR信号の予測を可能にし,集積駆動設計を検証しました.
結論:
- 開発されたCP1プローブは,リアルタイムでアポトーシスを監視するための敏感で選択的な方法を提供します.
- 集積駆動FL-MR探査設計はMR信号の定量化のためのユニークなプラットフォームです.
- このプローブ設計戦略は,様々なイメージングターゲットに適応し,マルチモダル分子イメージングを進めることができます.
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