サイト特異のインターフェロンαブロックコポリマーコンジュガートのポリメリゼーション誘導による自己組み立てが,薬理学的に顕著に改善されたミセルに
Xinyu Liu1, Mengmeng Sun1, Jiawei Sun1
1Department of Biomedical Engineering, School of Medicine , Tsinghua University , Beijing 100084 , China.
Journal of the American Chemical Society
|August 8, 2018
まとめ
局所特異的な局所ポリメリゼーション誘発セルフアセンブリ (SI-PISA) により,インターフェロン-α (IFN) 結合ミセルが生成された. これらのミセルはタンパク質の生物活性と in vivo 半減期を著しく高め,マウスの腫瘍を完全に抑制しました.
科学分野:
- バイオテクノロジー
- ポリマー化学
- 薬物の配達
背景:
- タンパク質結合は治療性タンパク質の半減期を延長するが,しばしば生物活性性を減少させる.
- タンパク質の半減期間の延長中にタンパク質の生物活性を維持するための戦略を開発することは,効果的なタンパク質療法にとって極めて重要です.
研究 の 目的:
- タンパク質の半減期延長に関連した生物活性低下を克服するために,新しい超分子自己組み立て戦略,サイト特異のインサイトポリメリゼーション誘導自己組み立て (SI-PISA) を開発する.
- 薬理学的な性能を向上させたインターフェロン-α (IFN) 結合ミセルを作成する.
主な方法:
- SI- PISAは,インターフェロン- α (IFN) のC端からアンフィフィリックブロックコポリマー (POEGMA- PHPMA) を育成するために使用されました.
- この in situ ポリメリゼーションにより,IFN-POEGMA-PHPMA 結合ミセルが形成された.
主要な成果:
- IFN- POEGMA- PHPMAミセルは,FDAが承認したPEGASYSと比較して,in vitroで21. 5倍高いバイオアクティビティを示した.
- PEGASYS (49. 5時間) とネイティブIFN (0. 8時間) に比べ,ミセルの半減期 (83. 8時間) は著しく延長された.
- 腫瘍モデルでは,ミセルは完全な腫瘍抑制と100%の生存率を達成し,PEGASYSとIFNを上回った.
結論:
- SI-PISAは,治療用タンパク質の薬理学的性能を高めるための有望な次世代技術です.
- このアプローチは,タンパク質半減期延長戦略における生物活性低下のジレンマを効果的に解決します.
- 開発された結合ミセルは,がん治療の改善と,タンパク質療法を必要とする他の疾患の治療の可能性を示しています.
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