Figure 5. S58 promotes antioxidant defense of TGF-β2-induced HConFs. (A) Analysis of antioxidant capacity of cells at day 14 after GFS. (B) Intracellular ROS variation, and (C) mitochondrial superoxide variation were examined by flow cytometry. (D) Antioxidant protein SOD1/2, γ-GCS and CAT levels analyzed by western blotting in TGF-β2-treated HConFs in the presence or absence of S58 (20 nM). (E) Relative antioxidant gene levels in HConFs preconditioned with TGF-β2 in the presence or absence of S58 (20 nM) for 12h. All data indicate the mean ± SD, n=3. *p < 0.05, **p < 0.01, ***p < 0.001.