Figure 5. Effect of adenoviral overexpression of SIRT6 on basal TXNIP, Prx1 and Srx levels in OA human articular chondrocytes.

(A) Human OA articular chondrocytes were transduced with ad-Null or ad-SIRT6 for 48 hours. Basal protein levels of TXNIP, Prx1 and Srx from total cell lysates were assessed by immunoblotting. (B) Densitometric analysis from TXNIP (n=11), Prx1 (n=11) and Srx (n=9) immunoblots. Total protein levels were normalized to β-tubulin as a loading control. In all cases, representative immunoblots are shown. SIRT6 immunoblots confirmed SIRT6 overexpression. Paired t-tests were used to test for statistical differences between groups.