Journal: Journal of Breast Cancer
Article Title: Troglitazone Inhibits Matrix Metalloproteinase-9 Expression and Invasion of Breast Cancer Cell through a Peroxisome Proliferator-Activated Receptor γ-Dependent Mechanism
Figure Lengend Snippet: Troglitazone inhibits 12- O -tetradecanoylphorbol-13-acetate (TPA)-induced nuclear factor κB (NF-κB) activation in MCF-7 cells. (A) Cells were treated with troglitazone with TPA and nuclear extracts were prepared after 3 hours. Translocation of p65 and p50 into the nucleus and phosphorylation of IκB kinase (IKK) α/β and nuclear factor of κ light polypeptide gene enhancer in B cells inhibitor (IκB) α in cytosol was determined by western blots. Proliferating cell nuclear antigen (PCNA) was the loading control for nuclear proteins. (B) NF-κB-luc reporters and a Renilla luciferase thymidine kinase reporter vector were co-transfected into MCF-7 cells. Cells were treated with troglitazone with TPA and NF-κB promoter activity was measured with dual-luciferase reporter assays. (C) Cells were treated with troglitazone with TPA and nuclear extracts made after 3 hours. NF-κB DNA binding was analyzed by electrophoretic mobility shift assay. Values are mean±standard error of the mean of three independent experiments. * p
Article Snippet: Phosphorylated (p)-c-Jun, nuclear factor of κ light polypeptide gene enhancer in B cells inhibitor (p-IκB) α, IκB kinase (p-IKK) α/β, c-Jun N-terminal kinases (JNK), p-JNK, extracellular signal-regulated kinases (ERK), p-ERK, and p-protein kinase B (AKT) antibodies were purchased from Cell Signaling Technology (Danvers, USA).
Techniques: Activation Assay, Translocation Assay, Western Blot, Luciferase, Plasmid Preparation, Transfection, Activity Assay, Binding Assay, Electrophoretic Mobility Shift Assay