The influence of auranofin, a clinically established antiarthritic gold drug, on bone metabolism: Analysis of its effects on human multipotent adipose-derived stem cells, taken as a model

摘要

Auranofin is a gold-based antiarthritic drug in clinical use for more that 25 years. However, in spite of it long established use, its specific effects on bone metabolism are still greatly controversial. We have analyzed in vitro the actions of auranofin oil human multipotent adipose-derived stem (hMADS) cells, used as it model for bone metabolism, since these cells were reported to undergo osteogenesis both in vitro and in vivo. Cytotoxicity of auranofin on WADS cells, differentiated into osteoblasts, was initially assessed. Thereafter, the consequences of exposure to nontoxic but clinically relevant auranofin concentrations were analyzed by monitoring the seleno-protein glutathione peroxidase 3 or alkaline phosphatase, a characteristic biomarker of osteogenesis. Notably, we found that chronic treatment with auranofin afters only weakly the levels of alkaline phosphatase, thus implying all overall modest effect on osteogenesis. In contrast, auranofin turned Out to greatly affect glutathione peroxidase 3 activity. The possible medical implications of these findings are discussed.