制御された放出のための均一サイズのペプチドベシクルにおけるゲーティング脂質領域の自発的形成
Md Mofizur Rahman1,2, Motoki Ueda1,3, Takuji Hirose2
1Emergent Bioengineering Materials Research Team , RIKEN Center for Emergent Matter Science (CEMS) , 2-1 Hirosawa, Wako , Saitama 351-0198 , Japan.
Journal of the American Chemical Society
|December 12, 2018
まとめ
研究者は"脂質ゲート"として機能する 安定したペプチド-脂質ハイブリッド小胞を作りました このバイオミメティック・システムは 38°C以上で制御された透かし性を示し,スマートな薬物投与アプリケーションの可能性を秘めています.
科学分野:
- バイオマテリアル科学
- 超分子化学
- ナノテクノロジー
背景:
- 以前の生物模倣細胞モデルは,脂質膜内のポリマーの役割に焦点を当てたフォスホリピド-脂質アセンブリを使用した.
- 先進的な機能的な生物材料のためのペプチド-脂質の共同組成の限定的な探索.
研究 の 目的:
- 安定したペプチド・リピド・ハイブリッド・ベシクルを設計し 透かし性を制御する
- ハイブリッド小胞の相性や機能性について調べる
- ハイブリッド・ベシクルが スマート・ドラッグ・デリバリー・システムとしての 可能性を評価する
主な方法:
- アンフィフィリックポリペプチドと1,2-ジミリストイル-スン-グリセロ-3-フォスホリン (DMPC) をモラ比1:1で共組する.
- 流光共振エネルギー伝送 (FRET) 分析により,相分離が確認される.
- 光素イソチオシアネートラベル付ポリエチレングリコール (FITC-PEG, Mw: 2000) を用いた浸透性研究.
主要な成果:
- 非常に安定したペプチド・リピド・ハイブリッド・ベシクルが成功裏に作られました.
- フェーズ分離構造が確認され,脂質ドメインのフェーズ移行温度 (Tm) は38°Cである.
- 脂質領域は,FITC-PEG (Mw:2000) の選択的浸透を38°C以上の温度でのみ示した.
結論:
- 設計されたペプチド・リピド・ハイブリッド・ベシクルは,温度制御された"脂質ゲート"として機能します.
- このシステムは,標的と刺激に反応する薬の投与の有望な進歩を表しています.
- 更に発展すれば 治療用ナノキャリアが完成する可能性があります
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