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. 2021 Sep 28;12(10):886. doi: 10.1038/s41419-021-04170-0

Fig. 8. RORα blockade inhibited STAT3 phosphorylation and dampened IL-6/STAT3 pathway in chondrocytes of OA.

Fig. 8

RORα directly interacts with STAT3 protein or the promoter region of IL6 gene, thereby accelerating the cartilage depredating effect of inflammatory cytokine. RORα blockade with either SR3335 or small interfering RNA resulted in the decreased level of STAT3 phosphorylation, and subsequently restored the expression of aggrecan, collagen type II, MMP, and ADAMTS. Finally, RORα blockade ameliorated the progression of cartilage damage.