Functional Responses of Human Adipose Tissue-Derived Mesenchymal Stem Cells to Metal Oxide Nanoparticles In Vitro

被引:48
作者
Hackenberg, Stephan [1 ]
Scherzed, Agmal [1 ]
Technau, Antje [1 ]
Froelich, Katrin [1 ]
Hagen, Rudolf [1 ]
Kleinsasser, Norbert [1 ]
机构
[1] Univ Wurzburg, Dept Otorhinolaryngol Plast Aesthet & Reconstruct, D-97080 Wurzburg, Germany
关键词
Titanium Dioxide; Zinc Oxide; Nanoparticles; Human Mesenchymal; Stem Cells; TITANIUM-DIOXIDE NANOPARTICLES; HUMAN BONE-MARROW; ZINC-OXIDE; OSTEOGENIC DIFFERENTIATION; INTRACELLULAR-DISTRIBUTION; SILVER NANOPARTICLES; PARTICLE-SIZE; TIO2; CYTOTOXICITY; SURVIVAL;
D O I
10.1166/jbn.2013.1473
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Nanoparticles (NPs) are frequently applied in biomedical applications. The use of human mesenchymal stem cells (hMSC) in biomedicine is pivotal, especially in oncology and tissue engineering. Titanium dioxide (TiO2) and zinc oxide (ZnO) NPs are interesting agents in experimental oncology and stem cells are discussed to be a potential vehicle for NPs to tumor sites. However, little is known about hazardous effects of NPs in hMSC. The aim of the present study was to analyze functional impairment of hMSC by ZnO- and TiO2-NPs. Cytotoxic effects of NPs were evaluated by the MTT-assay. Furthermore, multi-differentiation capacity, spheroid formation and migration were assessed. The immunophenotype was observed by flow cytometry. Cytotoxic effects were observed at 625 nM ZnO-NPs whereas no cytotoxicity was seen in hMSC by TiO2-NPs. The differentiation capacity of hMSC into osteogenic and adipose lineages was unchanged. A long-term period cultivation of hMSC for 3 weeks after NP exposure revealed a persistence of NPs in the cytoplasm. The migration capability was impaired whereas the ability to form spheroids was not affected. Flow cytometric analysis revealed distinct alteration of cell surface markers CD 90 and CD 73. Major functional properties of hMSC were unaffected by TiO2- and ZnO-NPs. However, restricted migration might critically influence wound healing capacity. Further information is needed to assess the clinical impact of these findings.
引用
收藏
页码:86 / 95
页数:10
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