Kaempferol Attenuates the Effects of XIST/miR-130a/STAT3 on Inflammation and Extracellular Matrix Degradation in Osteoarthritis

To investigate whether kaempferol exhibited protective effects on osteoarthritis chondrocytes by modulating the XIST/miR-130a/STAT3 axis. qRT-PCR and western blot assays were used for gene and protein determination. Dual luciferase reporter and RNA immunoprecipitation assays were employed to study the interaction between miRNA and lncRNA or genes. Kaempferol decreased proinflammatory cytokine production and extracellular matrix degradation in C28/I2 cells. Additionally, kaempferol ameliorated expression and enhanced miR-130a expression. XIST interacted with miR-130a, and was identified as a target of miR-130a. Knockdown of expression suppressed proinflammatory cytokine production and extracellular matrix degradation in C28/I2 cells. Overexpression of rescued the effects of knockdown. Kaempferol inhibited inflammation and extracellular matrix degradation by modulating the XIST/miR-130a/STAT3 axis in chondrocytes.