SCIENCE CHINA Chemistry, Volume 64 , Issue 7 : 1235-1241(2021) https://doi.org/10.1007/s11426-021-9998-x

Covalent organic framework nanoparticles for anti-tumor gene therapy

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  • ReceivedFeb 4, 2021
  • AcceptedMar 29, 2021
  • PublishedMay 31, 2021



This work was supported by the National Natural Science Foundation of China (51925305, 51873208, 51520105004, 51833010, 51803210, 51803014), the National Science and Technology Major Projects for Major New Drugs Innovation and Development (2018ZX09711003-012) and Jilin Province Science and Technology Development Program (20180414027GH).

Interest statement

The authors declare no conflict of interest.


Supporting information

The supporting information is available online at http://chem.scichina.com and http://link.springer.com/journal/11426. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.


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  • Scheme 1

    Schematic diagram of the construction of CLZU nanoparticles and their application for anti-tumor gene therapy (color online).

  • Figure 1

    Characterization of CLZU NPs. (a) XRD of LZU-1, LZU-PEI1.8K and LZU-Cys. The input of PEI and cystamine accounts for 10% of all monomers. (b) N2 adsorption isotherms of LZU-1, LZU-PEI1.8K and LZU-Cys. (c) The size distribution of different LZU NPs. (d) Zeta potential of LZU-1, LZU-PEI1.8K and LZU-Cys. SEM images of (e) LZU-PEI1.8K and (f) LZU-Cys (color online).

  • Figure 2

    CLSM images of B16F10 cells treated with PBS, LZU-Cys/LDB/Cy5-DNA. Scale bar: 20 μm (color online).

  • Figure 3

    Luciferase plasmid DNA transfection of LZU-1 (a), CLZU (LZU-PEI1.8K (b) and LZU-Cys (c)) mixed with LDB in different proportions in B16F10 cells. The different colors represent different mass ratios of mixed CLZU and DNA for transfection experiments. (d) GFP plasmid DNA transfection of PEI25K, LZU-1/LDB, LZU-PEI1.8K/LDB, and LZU-Cys/LDB. Scale bar: 20 μm (color online).

  • Figure 4

    Antitumor effect of LZU-Cys NPs in vivo. (a) Treatment schedule for 4T1 tumor-bearing mice. (b) Relative tumor volume and tumor photo of PBS, shVEGF, LZU-Cys/LDB, LZU-Cys/LDB/shVEGF groups. (c) Tumor weight and (d) body weight of mice in different treatment groups. ***, p<0.001; **, p<0.01 (color online).


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