Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (1): 114-118.

• Articles • Previous Articles     Next Articles

Dose-dependent Cytotoxicity and Oxidative Stress Induced by “Naked” Fe3O4 Nanoparticles in Human Hepatocyte

LIN Xin-li1, ZHAO Shu-hua1, ZHANG Long1, HU Gui-qin1, SUN Zhi-wei1,3*, YANG Wen-sheng2*   

  1. 1. School of Public Health, Jilin University, Changchun 130021, P. R. China;
    2. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    3. School of Public Health and Family Medicine, Capital Medical University, Beijing 100069, P. R. China
  • Received:2011-02-13 Revised:2011-04-08 Online:2012-01-25 Published:2011-12-27
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.51072064, 50825202).

Abstract: The dose-dependent cytotoxicity effect on human hepatocyte(HL-7702 cells) induced by “naked” Fe3O4 nanoparticles was assessed through cell viabilities and lactate dehydrogenase(LDH) activities. Three important oxidative indexes of the cells by glutathione peroxidase(GSH-Px), superoxide dismutase(SOD) and malondialdehyde( MDA) were determined. The good correlation of the cell viabilities with their GSH-Px, SOD and MDA levels indicated that the cytotoxicity is related to activation of oxidative stress induced by Fe3O4 nanoparticles. The oxidative stress also leads to corresponding DNA damage in a similar dose-dependent manner, followed by the changes of cell cycle and cell apoptosis. Such work provides important experimental data for the safety evaluation of superparamagnetic Fe3O4 nanoparticles.

Key words: Superparamagnetic, Fe3O4, Cytotoxicity, Oxidative stress, DNA damage, Cell cycle, Cell apoptosis