Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (12): 20220554.doi: 10.7503/cjcu20220554

• Article • Previous Articles     Next Articles

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)

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+

CLC Number: 

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