Figure 7. lncRNA GAS5 upregulated SIRT1 expression and decreased the proliferation and fibrosis-related proteins by acting as miR-221 sponge. (A–F) qPCR and western blot assays revealed that GAS5 upregulation increased SIRT1 expression and GAS5 downregulation decreased SIRT1 expression; (G–I) qPCR and western blot results showed that the expression level of SIRT1 in the MCs. The MCs were transfected with LV-GAS5 or mimic-miR-221; (J–L) expression level of Col-4 in MCs was measured by qPCR and western blot. The MCs were transfected with LV-GAS5 or mimic-miR-221; (M–O) p53 expression level in MCs was measured by qPCR and western blot. MCs were transfected with LV-GAS5 or mimic-miR-221. *P < 0.05, **P < 0.01.