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Toxic effect of titanium dioxide nanoparticles on human mesenchymal stem cells
Peralta‑Vega Adriana‑Berenice,Parra‑Barrera Alberto,Ramos‑Godínez María del Pilar,López‑Marure Rebeca,Arellano‑Galindo José,Gisela Gutiérrez‑Iglesias 대한독성 유전단백체 학회 2020 Molecular & cellular toxicology Vol.16 No.3
Background Titanium dioxide ( TiO2) is employed in the production of cosmetics, sunscreen, food, and drugs; however, TiO2 is toxic at the nanometric scale. Objective To analyze the in vitro toxic effect of TiO2 NPs on mesenchymal stem cells (hMSCs). Methods The hMSCs from Wharton`s jelly were exposed to 4, 62.5 and 500 μg/mL of TiO2 NPs. Viability and cell proliferation tests were carried out at 2, 5 and 7 days of exposure. Additionally, the osteogenic and adipogenic differentiation capacity was evaluated. Results TiO2 NPs had a perinuclear arrangement and internalized in vesicles into cytosol, diminished significantly the viability (40% and 30% and 30%) and the proliferation cellular (35%, 50% and 55%), differentiation to osteoblast (38%) and adipoblasts (20%). Conclusion TiO2 NPs affect viability, proliferation, and differentiation of hMSCs. Our result suggests more regulation of the use of TiO2.