The acute cytotoxicity of bismuth ferrite nanoparticles on PC12 cells
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Due to its unique properties, bismuth ferrite (BiFeO3, BFO) has gained a great deal of interest. The prevalence of BFO increases the likelihood of exposures either to environment or to humans. Unfortunately, the understanding of BFO biological effects is very limited. In this study, a battery of standard tests, such as morphology observation, MTT, and LDH assay, and flow cytometry analysis, was employed to elucidate in vitro cytotoxicity of BFO nanoparticles (NPs) in the size range of 30–90 nm using PC12 cells as a model. The results show that BFO-NPs could tightly attach to the cell membrane in the culture medium, which significantly affect the cell adhesion and inhibit their proliferation. Moreover, cytotoxicity of BFO-NPs is greatly mitigated when the exposure time was extended to 48 h. These findings suggest that BFO-NP possess the nature of acute cytotoxicity since the cells can recover to a certain extent over with incubation time. For the first time, our study reveals some essential properties of BFO-NP toxicity, which may advance BFO applications and its toxicological study.
KeywordsBiFeO3 Biocompatibility Cytotoxicity Environmental and health effects
This work was supported by the Ministry of Science and Technology of the People’s Republic of China [Grant number: 2011CB965004], and International Science & Technology Cooperation Program of China [Grant number: 2010DFB53890]. The authors would like to thank Dr. Qi Zhang, Dr. Tao Kong, and Dr. Ruigong Su for their kind assistances in the manuscript preparation. Anxin Wang and Xiangxu Jiang were acknowledged for flow cytometry analysis.
Conflicts of interest
The authors report no conflicts of interest.
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