ミトコンドリア局所化イリジウム (III) エンドペロキシド複合体の光分解は,低酸素状態での2光子光活性化療法のために
Shi Kuang1, Fangmian Wei1, Johannes Karges2
1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
Journal of the American Chemical Society
|February 16, 2022
まとめ
新しいイリジウム (III) エンドペロキシド前薬剤は,近赤外線照射で細胞毒物質とシングレット酸素を放出することによって,低毒性腫瘍を効果的に治療します. ナノ粒子に封じ込められ ネズミの腫瘍を根絶し 光力学療法への新しいアプローチを提供しました
科学分野:
- 生物医学工学
- 材料科学
- 癌 研究
背景:
- 光ダイナミック療法 (PDT) の有効性は,シングレット酸素生成を減少させる腫瘍低酸素によって制限されています.
- 低酸素症を克服するための新しい戦略の開発は,がん治療の成果を改善するために不可欠です.
研究 の 目的:
- 新型ミトコンドリア局所化イリジウム (III) エンドペロキシド前薬剤を合成光学療法と光活性化化学療法のために開発する.
- 腫瘍における低酸素濃度の限界に対処するためです.
主な方法:
- 新しいイリジウム (III) エンドペロキシド前薬 (2-O-IrAn) の合成と特徴付け.
- 低毒性腫瘍細胞と多細胞性腫瘍球体 (MCTS) での光毒性の評価
- プロドラッグをバイオチン機能化されたポリマーナノ粒子に封じ込み,投与と選択性を向上させる.
主要な成果:
- イリジウム (III) エンドペロキシド前薬 (2-O-IrAn) は,細胞毒性イリジウム (III) 複合体,シングレット酸素,およびアルコキシラジカルを2光子の照射で同調的に放出する.
- 2- O- IrAnは,低毒性腫瘍細胞とMCTSに対して,ナノモラー範囲で高い光毒性を示した.
- バイオチンで機能したナノ粒子は マウスモデルで 一回の治療で 腫瘍を効果的に根絶しました
結論:
- この研究では,イリジウム (III) 基のエンドペロキシド前薬が,光動力療法と光活性化化学療法の組み合わせとして初めて提示されました.
- 開発されたナノ粒子製剤は,低毒性腫瘍の治療に有意義な可能性を示しています.
- このアプローチは腫瘍低酸素症を克服するための 新しい治療法を開きます
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