Three dimensional spheroid cell culture for nanoparticle safety testing

被引:76
作者
Sambale, Franziska [1 ]
Lavrentieva, Antonina [1 ]
Stahl, Frank [1 ]
Blume, Cornelia [1 ]
Stiesch, Meike [2 ]
Kasper, Cornelia [3 ]
Bahnemann, Detlef [1 ]
Scheper, Thomas [1 ]
机构
[1] Gottfried Wilhelm Leibniz Univ Hanover, Inst Tech Chem, D-30167 Hannover, Germany
[2] Hannover Med Sch, D-30625 Hannover, Germany
[3] Univ Nat Resources & Life Sci Boku, Inst Appl Microbiol, A-1190 Vienna, Austria
关键词
In vitro cytotoxicity testing; Zinc oxide nanoparticles; Titanium dioxide nanoparticles; 3D cell culture; ZINC-OXIDE NANOPARTICLES; IN-VITRO; ZNO NANOPARTICLES; OXIDATIVE STRESS; TOXICITY; APOPTOSIS; LUNG; PROLIFERATION; CYTOTOXICITY; ADHESION;
D O I
10.1016/j.jbiotec.2015.01.001
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Nanoparticles are widely employed for many applications and the number of consumer products, incorporating nanotechnology, is constantly increasing. A novel area of nanotechnology is the application in medical implants. The widespread use of nanoparticles leads to their higher prevalence in our environment. This, in turn, raises concerns regarding potential risks to humans. Previous studies have shown possible hazardous effects of some nanoparticles on mammalian cells grown in two-dimensional (2D) cultures. However, 2D in vitro cell cultures display several disadvantages such as changes in cell shape, cell function, cell responses and lack of cell-cell contacts. For this reason, the development of better models for mimicking in vivo conditions is essential. In the present work, we cultivated A549 cells and NIH-3T3 cells in three-dimensional (3D) spheroids and investigated the effects of zinc oxide (ZnO-NP) and titanium dioxide nanoparticles (TiO2-NP). The results were compared to cultivation in 2D monolayer culture. A549 cells in 3D cell culture formed loose aggregates which were more sensitive to the toxicity of ZnO-NP in comparison to cells grown in 2D monolayers. In contrast, NIH-3T3 cells showed a compact 3D spheroid structure and no differences in the sensitivity of the NIH-3T3 cells to ZnO-NP were observed between 2D and 3D cultures. TiO2-NP were non-toxic in 2D cultures but affected cell-cell interaction during 3D spheroid formation of A549 and NIH-3T3 cells. When TiO2-NP were directly added during spheroid formation in the cultures of the two cell lines tested, several smaller spheroids were formed instead of a single spheroid. This effect was not observed if the nanoparticles were added after spheroid formation. In this case, a slight decrease in cell viability was determined only for A549 3D spheroids. The obtained results demonstrate the importance of 3D cell culture studies for nanoparticle safety testing, since some effects cannot be revealed in 2D cell culture. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:120 / 129
页数:10
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