纳米级金属有机层隔离了花素,用于有效的线粒体向光动力疗法
Journal of the American Chemical Society
|February 2, 2021
概括
新的纳米级组件可以防止-氨酸 (ZnPc) 聚合,从而增强结肠癌的光动力疗法 (PDT). 这种方法在小鼠模型中实现了99%以上的瘤抑制和显著的治愈率.
科学领域:
- 材料科学
- 纳米技术
- 生物医学工程
背景情况:
- -酸 (ZnPc) 光敏剂 (PSs) 由于强烈的长波吸收和高的三倍量子产量,对光动力疗法 (PDT) 是有前途的.
- 由于水溶性和聚合性差,ZnPc PSs的临床应用受到阻碍,导致自我灭和有效性降低.
研究的目的:
- 为改进基于ZnPc的PDT设计和合成一种新的纳米金属有机层 (nMOL) 组件.
- 通过防止聚合,增强 (II) -2,3,9,10,16,17,23,24-octa (ZnOPPc) 的光动力效率.
主要方法:
- 使用Hf12二级建筑单元 (SBU) 支持的ZnOPPcPS制造ZnOPPc@nMOL.
- 评估ZnOPPc@nMOL吸收700nm光和产生单片氧的能力.
- 评估ZnOPPc@nMOL组件的内在线粒体向能力.
主要成果:
- 组合ZnOPPc@nMOL有效地防止了ZnOPPc激发状态的聚合诱导的自我灭.
- 在700nm的ZnOPPc@nMOL辐射有效地使单片氧形成敏感.
- 在两种结肠癌小鼠模型中,ZnOPPc@nMOL显示出99%的瘤生长抑制和40-60%的治愈率.
结论:
- 开发的 ZnOPPc@nMOL 纳米级组件克服了传统 ZnPc PS 的局限性.
- 这种纳米技术为通过光动力疗法有效治疗癌症提供了一个有前途的策略.
- 内在线粒体向和聚合预防有助于观察到的高疗效.
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