Oral cancer is highly aggressive due to difficult diagnosis, therapy resistance and increasing frequency; thus finding prevention therapies is very important. This study evaluates the use of gold and silver nanoparticles (NPs), phyto-synthesized with extract against oral dysplastic lesions. NPs were characterized by UV-Vis, Fourier-transform infrared spectroscopy, transmission electron microscopy, x-ray diffraction and laser Doppler microelectrophoresis. Biological testing employed two human oral cell lines: gingival fibroblasts and dysplastic keratinocytes and evaluated viability, cell death mechanisms and cellular uptake. NPs induced selective toxic effects against dysplastic cells. p53/BAX/BCL2 activation and PI3K/AKT inhibition led to cell death through necrosis and apoptosis. NPs also induced antioxidant and anti-inflammatory effects. NPs of gold and silver showed promising beneficial effects in the therapy of oral dysplasia.

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http://dx.doi.org/10.2217/nnm-2019-0290DOI Listing

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