Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (10): 1109-1117.DOI: 10.11944/j.issn.1000-0518.2019.10.190112

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Preparation of Lysozyme-Responsive Nanodiamond Drug-Loading System and the Effect on HepG2 Cells

LI Linab*(),SONG Jixianga,LI Yingqic,ZHANG Caifengab   

  1. aDepartment of Chemistry,Taiyuan Normal University,Jinzhong,Shanxi 030619,China
    bHumic Acid Engineering and Technology Research Center of Shanxi Province,Jinzhong,Shanxi 030619,China
    cDepartment of Chemistry,College of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China
  • Received:2019-04-16 Accepted:2019-08-19 Published:2019-10-01 Online:2019-09-29
  • Contact: LI Lin
  • Supported by:
    Supported by Shanxi Youth Science and Technology Research Fund Project(No.201801D221440), the Taiyuan Normal University College Students Science and Technology Innovation Project(No.2018503 CXCY1850), and the Shanxi Provincial Applied Fundamental Research Fund Project(No.201801D121257)

Abstract:

Glycidol(GLY) and doxorubicin(DOX) were coupled to ACAylated nanodiamond(ND) carrier to obtain nanodiamond-aminocaproic acid-glycidol-doxorubicin (ND-ACA-GLY-DOX, NAGD) drug delivery system through ester bond. The amounts of ACA and DOX coupled to the surface of the ND were (185±10.0) μg/mg and (115±5.2) μg/mg, respectively, as determined by fluorescence spectroscopy. The results showed that the amount of NAGD released was very low in the physiological environment(pH=7.4), while the ester bond was hydrolytically cleaved and a large amount of DOX was released in the presence of lysozyme in the lysosome environment of the tumor cells. Using liver cancer cells as the model, the cell morphology test showed that NAGD could effectively kill tumor cells. The above results indicate that NAGD can be used as a good drug delivery system.

Key words: nanodiamond, aminocaproic acid, glycidol, doxorubicin, lysozyme responsive