Figure 4.
The effect of Sirt1 overexpression on TNF-α-induced IkBα degradation (A) and NF-κB activation (B). Control or Sirt1-overexpressing osteoblastic cells were treated with TNF-α (5.0 ng/mL) for 1 h. Activity of NF-κB was analyzed by luciferase reporter assay. bP<0.05 vs Ad-lacZ cells. eP<0.05 vs TNF-α-treated Ad-lacZ cells.