生物科学では,細胞が"見る"もの
Dorota Walczyk1, Francesca Baldelli Bombelli, Marco P Monopoli
1Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland.
Journal of the American Chemical Society
|April 2, 2010
まとめ
生物学的システムと相互作用するナノ粒子は,バイオ分子"コロナ"で覆われています. これらのタンパク質層は,裸のナノ粒子ではなく,細胞が検出し,生物学的相互作用に影響を与えるのに十分な長期間持続します.
科学分野:
- ナノメディシンは,ナノ医療です.
- バイオマテリアル科学 バイオマテリアル科学
- 細胞生物学 細胞生物学
背景:
- ナノ粒子は"コロナ"と呼ばれる吸収されたバイオ分子層を通して生物学的システムと相互作用します.
- このコロナの組成と安定性は,ナノ粒子の生物学的アイデンティティと相互作用を著しく影響します.
- コロナダイナミクスを理解することは,ナノ粒子の振る舞いをin vivoで予測するために不可欠です.
研究 の 目的:
- 生物学的媒介におけるナノ粒子に形成された生物分子コロナの安定性と特性を調査する.
- これらのコロナが細胞相互作用の主要な決定因子となるのに十分な長期間持続するかどうかを判断する.
- これらのコロナを独立して分離し,研究する可能性を評価する.
主な方法:
- 生物分子コロナ形成と安定性の時間解析分析.
- ナノ粒子-バイオ分子複合体のインシットおよび孤立研究.
- コロナ構造と寿命を特徴付けるために複数の方法論を使用した.
主要な成果:
- 生物分子コロナ,特に血から生成されたコロナは,十分に安定して長生きします.
- これらの安定した冠は,構造的な変化なしに物理的に分離することができます.
- 裸のナノ粒子の表面ではなく,コロナが生物学的細胞によって認識される可能性が高い.
結論:
- バイオ分子コロナは,ナノ粒子との細胞相互作用を決定するのであり,物質の固有の性質を決定するものではありません.
- 裸の性質に基づいてナノマテリアルを分類する現在の方法は不十分かもしれません.
- 報告された方法論は,安全性および基礎科学のためのナノマテリアルの生物学的影響をよりよく理解し,予測するための経路を提供します.
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