The ROS/GRK2/HIF-1α/NLRP3 Pathway Mediates Pyroptosis of Fibroblast-Like Synoviocytes and the Regulation of Monomer Derivatives of Paeoniflorin

Figure 5

G protein-coupled receptor kinase 2 (GRK2) promotes the expression of hypoxia-inducible factor (HIF)-1α. (a, b) shGRK2 was transfected into fibroblast-like synoviocytes (FLS) and exposed to hypoxia for 2 h. Immunoblot analysis and quantification of GRK2 and HIF-1α. (c, d) GRK2 overexpression plasmid was transfected into FLS. Immunoblot analysis and quantification of GRK2, HIF-1α, nucleotide-binding oligomerization segment-like receptor family 3 (NLRP3), and N-terminal domain of human gasdermin D (GSDMD-N). The values are shown as the (). , compared with the control group and ^# compared with the hypoxia group or the NC group.

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