基板ポリマー表面の高収量活性化により,細胞粘着分子が結合します
T Joseph Dennes1, Geoffrey C Hunt, Jean E Schwarzbauer
1Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA.
Journal of the American Chemical Society
|January 4, 2007
まとめ
研究者は,ナイロン表面に細胞粘着性ペプチドを固定するための新しい方法を開発しました. この技術は,細胞粘着アプリケーションにおけるバイオマテリアルの性能を改善するためにペプチド負荷を大幅に強化します.
科学分野:
- マテリアルサイエンス 材料科学
- バイオテクノロジー バイオテクノロジー
- 表面化学について
背景:
- ポリアミドナイロン6/6は,一般的な合成ポリマーです.
- バイオマテリアルの表面改変は,細胞粘着に不可欠です.
- ペプチド不動化の既存の方法には,効率と負荷能力の限界があります.
研究 の 目的:
- 細胞粘着性ペプチドをナイロン6/6表面に共振的に結合させる高収量方法を開発する.
- 改造されたナイロン材料の細胞粘着と拡散特性を高めるために.
主な方法:
- ジルコニウムテトラ (テートブト酸化物) がナイロン6/6の表面アミド群と反応し,ジルコニウム複合体を形成する.
- これらの表面複合体の,アルギニン・グリシン・アスパルティック酸 (RGD) ペプチドとの後の反応.
- RGDの表面負荷とカバーの特徴.
主要な成果:
- ナイロンの表面で (エタ) 2 - アミド酸) ジルコニウム複合体の高収量形成.
- RGD (0.18 nmol/cm2) の高い表面負荷を達成し,以前の方法より20〜1000倍大きい.
- 約40%のRGDの表面覆面を示しています.
- 改造された表面は,水解への安定性と,細胞粘着と細胞拡散のための高い活性を示した.
結論:
- ジルコニウム媒介の表面機能化は,ナイロン上の生物活性ペプチドを固定するための非常に効率的な戦略を提供します.
- この方法は,強化された細胞相互作用のためにナイロン表面のバイオミメティック特性を大幅に改善します.
- 結果として得られるRGD機能化されたナイロンは,組織工学と再生医療の応用のための有望な材料です.
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