Figure 5.
Focal adhesion pathway gene vinculin as a direct transcriptional target of metastasis suppressor NME2. (A) Representation of NME2-target genes enriched in KEGG focal adhesion pathway; names are mentioned against highlighted boxes. Genes in blue color showed changes in mRNA level only (indirect targets); in comparison, genes with asterisk (*) showed alteration in mRNA level and binding of NME2 to their promoter as well (direct targets). (B) ChIP-PCR validation of NME2 occupancy of vinculin promoter: scheme showing NME2-motif within vinculin promoter; ChIP assay shows NME2 occupancy at the vinculin promoter; mock represents immunoprecipitation using non-specific isotypic IgG. (C) Over expression of NME2 represses (left panel), and stable depletion of NME2 enhances vinculin promoter activity in a luciferase reporter assay (right panel); 3- and 50-fold depletion corresponds to 66% and 98% decreased expression compared to control; all significance values: *P < 0.05, **P < 0.01; Student's t test, error bars represent standard deviation (SD).