We present a report regarding the cytotoxic effects of iron-based magnetic nanoparticles conjugated with fluorodeoxyglucose (FDG-mNPs) on the viability of NCI-H727 and SH-SY5Y cancer cells. MTT assays were performed to determine cell viability in treated cancer cells grown under standard 2D culture conditions. FDG-mNP concentrations of 0.075 mg/mL, 0.15 mg/mL, and 0.3 mg/mL decreased mean cell viability of NCI-H727 cells to 92.5%, 82.9%, and 75% respectively. FDG-mNPs was also shown to have a detrimental effect on the viability of SY5Y cells: a decrease of 5.7%, 18.6%, and 36.4% was found for SY5Y cells treated with 0.075 mg/mL, 0.15 mg/mL, and 0.3 mg/mL concentrations of FDG-mNPs, respectively. When NCI-H727 and SH-SY5Y cancer cells were grown as 3D spheroids, morphology was visibly changed and the number of viable cells was decerased in spheroids treated with FDG-mNPs compared with untreated spheroids. The results of our study demonstrated that FDG-mNP has toxic effects on NCI-H7272 and SY5Y cancer cells, and we conclude that conjugated FDG-mNPs are promising in the development of clinical applications for the destruction of cancer cells.
Keywords: Fluorodeoxyglucose; Magnetic nanoparticles; NCI-H727; SH-SY5Y; Spheroids.