Fig 1: Loss of TAGLN2 expression induces NF-?B activation. (A) Luciferase activity of an NF-?B-luciferase reporter plasmid in TAGLN2-overexpressing 293T cells was measured 48 h after stimulation with siRNA-TAGLN2 or scramble siRNA; luciferase activity was normalized to that of Renilla. Data were representative of three independent experiments. (B) Immunoblotting of I?B, p50, p65/RelA and TAGLN2 expression in MDA-MB-231 and MCF-7 cells transfected with pLKO.1-shRNA-TAGLN2 and pLKO.1-shRNA-scramble. The results of western blotting were representative of three independent experiments. (C) Cell migration was promoted in MDA-MB-231 cells transfected with pLKO.1-shRNA-TAGLN2 compared with cells treated with scramble shRNA. Treatment with 18 µM SN50 for 24 h reversed the effects of TAGLN2 downregulation on cell invasion. Data are representative of three independent experiments. *P<0.05 vs. scramble or as indicated. DMSO, dimethyl sulfoxide; NF-?B, nuclear factor-?B; shRNA, short hairpin RNA; siRNA, small interfering RNA; TAGLN2, transgelin 2.