ホスト・ゲストの相互作用によって引き起こされる金ナノ粒子の細胞吸収
Jesús Mosquera1, Malou Henriksen-Lacey1, Isabel García1
1CIC biomaGUNE and Ciber-BBN , Paseo de Miramón 182 , 20014 Donostia-San Sebastián , Spain.
Journal of the American Chemical Society
|March 22, 2018
まとめ
研究者は,超分子化学を用いた細胞への金ナノ粒子 (AuNP) の侵入を制御する方法を開発した. 負の電荷を持つAuNPは,特定のカチオンケージを加えることで細胞の吸収に活性化され,ナノ医療のための調整可能なアプローチを提供します.
科学分野:
- 超分子化学
- ナノテクノロジー
- 細胞生物学
背景:
- ナノ粒子の細胞吸収を制御することは 標的の薬物投与と診断に不可欠です
- ナノ粒子の侵入を制御する既存の方法は,しばしば特異性がないか,生物学的環境に敏感である.
研究 の 目的:
- 小型の金ナノ粒子 (AuNPs) の細胞吸収を正確に調節するための超分子アプローチを開発する.
- ナノ粒子内部化のオンデマンド活性化のためのホスト・ゲスト化学の使用を実証する.
主な方法:
- 負の電荷のピラニン染料による金ナノ粒子 (AuNPs) の機能化.
- 特別に設計されたカチオンの共性ケージを使用して,細胞の吸収をインシットで活性化します.
- パイラニンとケージの間のホスト・ゲスト認識を使用して,ナノ粒子電荷と細胞浸透を調節します.
主要な成果:
- 陰性電荷のピラニン機能化されたAuNPは限られた細胞浸透を示した.
- ピラニンに選択的に結合する補完的なカチオンケージを追加し,負の電荷を中和し,細胞の吸収を活性化します.
- 吸収はケージやピラニンの濃度調整によって調整可能であり,タンパク質に富んだ媒介で効果的であった.
結論:
- 超分子主体-ゲストの相互作用は,ナノ粒子の細胞吸収を制御する高度に選択的で可逆的なメカニズムを提供します.
- この戦略は,複雑な生物学的システムにおけるナノ粒子-細胞の相互作用を制御するための多用途のプラットフォームを提供します.
- このアプローチは,標的型ナノ医療と診断における応用の可能性を持っています.
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