ガドリニウムケラートでコーティングされた金のナノ粒子は,X線コンピューティングトモグラフィーと磁気共振イメージングの両方のコントラスト剤として使用されます
Christophe Alric1, Jacqueline Taleb, Géraldine Le Duc
1Laboratoire de Physico-Chimie des Matériaux Luminescents, UMR 5620 CNRS-Université Claude Bernard Lyon 1, 69622 Villeurbanne Cedex, France.
Journal of the American Chemical Society
|April 15, 2008
まとめ
機能化されたゴールドナノ粒子は,ゴールドからのX線コントラストとガドリニウムからのMRIコントラストを組み合わせて,二重モードの画像処理を提供します. これらの新しいナノ粒子は,主要な臓器に蓄積することなく血液で循環します.
科学分野:
- ナノテクノロジー ナノテクノロジー
- バイオメディカルイメージング
- マテリアルサイエンス 材料科学
背景:
- 複数のイメージング方法のための効果的なコントラスト剤の開発は,依然として課題です.
- 金ナノ粒子 (AuNPs) は,X線画像にユニークな特性を提供しています.
- ガドリニウムケラートは,磁気共鳴画像 (MRI) のコントラスト剤として広く使用されています.
研究 の 目的:
- 機能化された金のナノ粒子を,X線とMRIにおけるバイバルモダリティのコントラスト剤として開発し,評価する.
- これらの新しいナノ粒子のイメージング能力と生物学的分布を調査する.
主な方法:
- 多層の有機殻に封じ込められた金のナノ粒子の合成.
- 有機殻は,ジスルファイド結合で結びついたガドリニウムケラートを含んでいる.
- X線とMRIによるコントラスト増強と生物分布のインビボ評価.
主要な成果:
- 機能化された金のナノ粒子は,X線とMRIの両方で効果的なコントラスト強化を示しました.
- 金色のコアはX線を強く吸収し,捕まったガドリニウムイオンはMRI信号を強めた.
- 粒子は,肺,,または肝臓で有意な蓄積なしに,血管の良好な循環を示した.
結論:
- 機能化された金のナノ粒子は,多用途の二重モードのコントラスト剤として機能します.
- これらのナノ粒子は,先端のin vivoイメージングアプリケーションの有望性を示しています.
- 観察された生物分布は,臨床翻訳のための好ましい安全性プロファイルを示唆しています.
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