Abstract
Peroxiredoxin 5 is a member of the peroxiredoxin family, which has been shown to act as an antioxidant whose main function is to reduce reactive oxygen species in cells. Peroxiredoxin 5 has been found to be abnormally elevated in human osteoarthritic chondrocytes. However, the detailed mechanism by which peroxiredoxin 5 modulates human osteoarthritic chondrocytes’ survival has not been elucidated. In the current study, we demonstrated that peroxiredoxin 5 knockdown activated osteoarthritic chondrocytes apoptosis, and decreased scavenging of endogenous reactive oxygen species. Furthermore, silencing of peroxiredoxin 5 resulted in an altered expression of proteins associated with Wnt signaling. Collectively, these results demonstrated that the regulatory effects of peroxiredoxin 5 can be partially attributed to Wnt/β-catenin signaling.
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