複合ポルフィリン-タンパク質ポリマーソームの写真誘発による破壊
Gregory P Robbins1, Masaya Jimbo, Joe Swift
1School of Engineering and Applied Sciences, Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Journal of the American Chemical Society
|March 3, 2009
まとめ
タンパク質ポリマーベシクルは,フェリチンと亜鉛ポルフィリン二酸化物で満たされると光反応性になります. 光への曝露は変形と破壊を引き起こし,カプセル化された分子の制御された放出を可能にします.
科学分野:
- バイオマテリアル科学 バイオマテリアル科学
- ポリマー化学のポリマー化学について
- ナノテクノロジー ナノテクノロジー
背景:
- アンフィフィリック二重ブロックコポリマーは二重層ベジクル (ポリマーソーム) を形成する.
- フェリチンなどのタンパク質は,ポリマーソームに組み込まれ,非対称な構造を誘導することができます.
- フォトレスポンシブ素材は,素材操作のための制御されたトリガーを提供します.
研究 の 目的:
- フェリチンと亜鉛ポルフィリン二重体 (PZn(2) を含んだポリマーソームの光反応性行動を調査する.
- ポリマーソームの構造と機能に対するフェリチンとPZn(2) の相乗効果を理解する.
- これらのエンジニアリングされた水泡から光の誘発による貨物の放出を実証するために.
主な方法:
- コンフォカル顕微鏡で,フェリチンとPZn(2) のロケーションを追跡する.
- 分子拡散を評価するために,光漂白後の光回復 (FRAP).
- 膀の機械的性質を測定するためのマイクロパイペット吸入実験.
- モデル小分子 (バイオチチン) の封じ込みと光誘発による放出.
主要な成果:
- フェリチンとPZn(2) の組み込みにより,非対称なポリマーソーム構造が生じた.
- 光照射により,ポリマーソームの急速な変形と破壊が引き起こされた.
- フェリチンとPZn(2) は緩やかな拡散を示し,膜関連性を示した.
- 膀は弾性モジュールが増加し,屈折の硬さが変化した.
- 包装されたビオシチンは,光にさらされると放出されました.
結論:
- フェリチンとPZn(2) の相乗効果により,光反応性ポリマーソームが生成されます.
- フェリチンは変形を促進し,PZn(2) は局所的な加熱のために光エネルギーを収集します.
- このタンパク質-ポリマー膜相互作用は,他のタンパク質に適用できる一般的な現象です.
- ライトトリガーの変形と放出は,制御された薬物投与アプリケーションの可能性を実証しています.
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