高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (12): 20220554.doi: 10.7503/cjcu20220554

• 研究论文 • 上一篇    下一篇

新型可降解纳米药物ZnO2@Fe3+-TA@PVP用于肿瘤的化学动力学治疗

周仕杰1,2,3, 赵莹3, 牛瑞3, 徐博3, 薛东芝3, 王樱蕙3(), 张洪杰1,2,3,4()   

  1. 1.中国科学技术大学稀土学院, 合肥 230026
    2.中国科学院赣江创新研究院, 赣州 341000
    3.中国科学院长春应用化学研究所稀土资源利用国家重点实验室, 长春 130022
    4.清华大学化学系, 北京 100084
  • 收稿日期:2022-08-20 出版日期:2022-12-10 发布日期:2022-10-17
  • 通讯作者: 王樱蕙,张洪杰 E-mail:yhwang@ciac.ac.cn;hongjie@ciac.ac.cn
  • 基金资助:
    国家自然基金(52022094);中国科学院青年创新促进会(2019232)

Novel Biodegradable Nanodrugs ZnO2@Fe3+-TA@PVP for Chemodynamic Therapy

ZHOU Shijie1,2,3, ZHAO Ying3, NIU Rui3, XU Bo3, XUE Dongzhi3, WANG Yinghui3(), ZHANG Hongjie1,2,3,4()   

  1. 1.School of Rare Earths,University of Science and Technology of China,Hefei 230026,China
    2.Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou 341000,China
    3.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    4.Department of Chemistry,Tsinghua University,Beijing 100084,China
  • Received:2022-08-20 Online:2022-12-10 Published:2022-10-17
  • Contact: WANG Yinghui, ZHANG Hongjie E-mail:yhwang@ciac.ac.cn;hongjie@ciac.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(52022094);the Youth Innovation Promotion Association of Chinese Academy of Sciences(2019232)

摘要:

为了提高化学动力学疗法的治疗效果, 设计制备了一种新颖的可降解纳米药物ZnO2@Fe3+-TA@PVP. 在弱酸性的肿瘤微环境中, 该纳米药物可降解为Zn2+, Fe3+, 单宁酸(TA)和H2O2, 实现了肿瘤微环境内H2O2的自供给. 同时, 释放出的Fe3+被TA进一步还原成Fe2+, 实现了肿瘤原位Fe2+的自生成, 并进一步与H2O2发生芬顿反应生成毒性的羟基自由基(·OH), 从而实现对肿瘤细胞特异性的化学动力学治疗. 此外, Zn2+通过抑制线粒体电子传递链(ETC)来促进内源性超氧阴离子(·O2-)的产生, 从而协同提高了治疗效果.

关键词: 化学动力学疗法, 可降解, H2O2的自供给, Fe2+的自生成

Abstract:

A novel biodegradable nanodrugs ZnO2@Fe3+-TA@PVP for further improving the treatment effect of chemodynamic therapy(CDT) was prepared. In the acidic tumor microenvironment, ZnO2@Fe3+-TA@PVP could be degraded to Zn2+, Fe3+, tannic acid(TA) and H2O2, achieving H2O2 self-supply. Moreover, Fe3+ ions were further reduced to Fe2+ by TA, realizing the self-generation of Fe2+ in the tumor site. Fenton reaction occurred between Fe2+ and H2O2 to produce high toxic ·OH, which realized efficient CDT. Meanwhile, Zn2+ ions inhibited the mitochondrial electron transport chain(ETC) to promote the production of endogenous superoxide anion(·O2-), thus synergistically improving the therapeutic effect.

Key words: Chemodynamic therapy, Biodegradable, Self-supply of H2O2, Self-generation of Fe2+

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