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  • Title: Mechanism of Biological Compatibility of Water-Soluble Yb3+, Er3+ Codoped NaYF4 Nanoparticles.
    Author: Liu C, Chen H, Li S, Xu H, Zhao D.
    Journal: J Nanosci Nanotechnol; 2016 Apr; 16(4):3653-8. PubMed ID: 27451683.
    Abstract:
    Water soluble NaYF4 nanocrystals codoped with 20 mol% Yb3+, 2 mol% Er3+ were prepared by a facile solvothermal approach using polyvinylpyrrolidone (PVP) as a surfactant. As a potential material for luminescent probes, in votroeffects of upconversion nanoparticles (UCNPs) on human aenocarcinoma (SGC-7901) cells with different concentrations were observed. These effects range from cell viability, mitochondrial membrane potential (MMP), reactive oxygen species (ROS) production, AnnexinV-FITC-propidium iodide (PI) apoptosis detection, and cell cycles. Our results demonstrated that the cells treated with UCNPs showed a decrease in cell viability accompanied the decreased MMP and the release of ROS. When treated with 400 µg/mL UCNPs, AnnexinV-FITC-PI apoptosis detection showed the UCNPs induced apoptosis, the cell cycle indicated the UCNPs suppressor cells in the G1 phase obviously, thereby reducing cell activity.
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