瘤微环境激活的治疗性纳米酶用于三模式成像引导的联合疗法
Pengcheng Hu1, Jie Xu1, Qiushi Li2
1School of Medical Imaging, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
Journal of colloid and interface science
|January 24, 2024
概括
一个新的纳米平台,将金纳米双金字塔和纳米集群与绿色结合,为乳腺癌提供多式成像指导的协同疗法,提高治疗效率.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 协同作用的癌症治疗需要多功能纳米平台,但合理的设计仍然具有挑战性.
- 瘤微环境的特点是酸性较弱,缺氧,以及过氧化的大量存在.
- 开发用于多式成像和治疗的集成纳米结构对于有效的癌症治疗至关重要.
研究的目的:
- 构建一个多功能纳米复合材料 (Au NBPs@Pt NCs-ICG) 用于多式成像引导的协同光疗和化学动力癌症治疗.
- 为了利用瘤微环境的特性,提高治疗效果.
- 评估这个纳米平台在乳腺癌治疗中的潜力.
主要方法:
- 合成的金纳米双 (Au NBPs) 与纳米集群 (Pt NCs) 装饰,并通过SH-PEG-NH2与绿 (ICG) 结合.
- 使用ICG用于光动力学疗法 (PDT) 和光成像.
- 利用PtNCs的类甲基酶和类过氧酶的活性来产生氧气和提高活性氧物种 (ROS) 的调节.
- 集成的Au NBPs用于光热疗法 (PTT) 和成像,以及由于高Z元素 (Au, Pt) 的X射线计算机断层扫描 (CT) 成像.
主要成果:
- 在Au NBPs@Pt NCs-ICG纳米复合材料证明了有效的多式联接成像能力 (光,PTT,CT).
- 该纳米平台成功生成了O2以缓解瘤缺氧和上调ROS水平,用于增强化学动力学疗法 (CDT).
- 观察到协同作用的PTT/PDT/CDT效应,导致显著的抗癌活性.
- 该纳米平台显示了有效治疗乳腺癌的巨大潜力.
结论:
- 开发的Au NBPs@Pt NCs-ICG纳米平台是一个有前途的多功能系统,用于多式成像引导的协同癌症治疗.
- 这种方法有效地利用瘤微环境,提高治疗效果.
- 这种纳米平台在有效治疗乳腺癌方面具有显著的潜力.
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