枝分かれした多機能ポリエーテルポリケタル:ケタル群構造の変異により,溶液および細胞内のポリマー分解に対する前例のない制御が可能になる
Rajesh A Shenoi1, Jayaprakash K Narayanannair, Jasmine L Hamilton
1Centre for Blood Research and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.
Journal of the American Chemical Society
|August 22, 2012
まとめ
研究者は,高度なナノ医療のために調節可能な分解率を持つ,ポリケタルヒドロキシエーテル (PKHEs) と呼ばれる新しい生物分解性ポリマーを開発しました. これらの多機能ナノマテリアルは,優れた生物互換性と細胞内の制御された分解を示しています.
科学分野:
- ポリマー化学のポリマー化学について
- 材料科学 材料科学とは
- ナノメディシンは,ナノ医療です.
背景:
- 多機能,生物互換性,生物分解性ナノマテリアルの開発は,標的型ナノ医療にとって極めて重要です.
- 既存の材料には,分解プロファイルと刺激反応に対する正確な制御が欠けていることが多い.
研究 の 目的:
- 多機能のデンドリート型ポリエーテルポリケタル (ポリケタルヒドロキシエーテル) (PKHEs) の新種のクラスを合成し,特徴づけること.
- 溶液と細胞内のポリマーの分解速度に対する前例のない制御を達成するために.
- ナノ医療の応用のためのPKHEsの生物互換性と可能性を評価する.
主な方法:
- 新型AB(2) 型ケタルモノメアのアニオン環開閉多分岐ポリメリゼーション.
- アジドおよびアミン群によるポリマー機能化.
- 軽度の酸性pH下での水解研究で,分解運動を決定する.
- コンフォカル顕微鏡を用いた細胞分解の研究.
- 生物互換性評価 (MTSアッセイ,血液互換性試験など).
主要な成果:
- 調節可能な特性を有する高分子量,コンパクトなPKHEsを合成しました.
- ケタルグループ構造と水性抵抗性に基づいて,ポリマーの分解速度 (分から数百日) を正確に制御することが実証されています.
- 生体細胞内で同様の分解プロファイルが確認され,マーカーの細胞溶液配送につながった.
- PKHEsとその分解産物は,高い生物互換性と血液互換性を示した.
結論:
- この新しい生物分解性PKHEsのクラスは,調節可能な分解を提供し,ナノ医療の正確な制御を可能にします.
- 証明された生物互換性と細胞内分解により,PKHEsは標的型薬剤投与およびその他のナノ医療用途において非常に有望である.
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