纳米级金属有机框架稳定了I型和II型光动力疗法的细菌化物
Journal of the American Chemical Society
|April 7, 2020
概括
这项研究介绍了Zr-TBB,一个用于光动力学治疗的纳米金属有机框架. 它有效地产生反应性氧物种来治疗小鼠的乳腺癌和结肠癌.
科学领域:
- 纳米技术
- 材料科学
- 生物医学工程
背景情况:
- 光动力疗法 (PDT) 是一种有前途的癌症治疗方法.
- 开发稳定有效的光敏感剂对于PDT的有效性至关重要.
- 金属有机框架 (MOF) 为药物输送和治疗提供了多功能平台.
研究的目的:
- 设计和合成一种基于细菌的MOF,Zr-TBB,用于增强光动力学治疗.
- 研究Zr-TBB产生的反应性氧物种 (ROS) 的机制.
- 在临床前癌症模型中评估Zr-TBB的抗瘤功效.
主要方法:
- 使用5,10,15,20-tetra(p-benzoato) 细菌 (TBB) 配体合成Zr-TBB.
- 描述Zr-TBB的结构和光物理特性.
- 在小鼠模型中对Zr- TBB对乳腺癌和结肠癌的抗瘤功效的体内评估.
主要成果:
- Zr-TBB有效地稳定了TBB配体,提高了光稳定性和氧气耐受性.
- 在740nm光照射下,Zr-TBB产生单片氧,超氧化,过氧化和基.
- 在乳腺癌和结肠癌模型中,Zr- TBB显示出显著的抗瘤疗效,治疗率为40%.
结论:
- Zr-TBB是一种高效的基于细菌的MOF,用于光动力疗法.
- MOF框架通过I型和II型机制增强了ROS的产生.
- 在乳腺癌和结肠癌的治疗中,Zr-TBB具有显著的潜力.
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