Fig. 4

a schematic of SAA1 mRNA showing a potential binding site in the SAA 3′-UTR for miR-660; SAA1-mut indicates the SAA1 with the mutated sites; b Western-blot analyses of different protein expression (c-Caspase3, c-Caspase7, MMP-3, MMP-13, Collagen-II, Aggrecan, SAA1) in TNF-α, TNF-α + miR-660 vector and TNF-α + antigomiR-660 groups