Fig. 5. VAV2 and IQGAP1 mutants stimulate the MAPK and PI3K/AKT signaling pathways.
Both WT and mutant HA-tagged VAV2 (a) and myc-tagged IQGAP1 (b) were expressed in HEK293 and HeLa cells, as indicated. The activation status of MAPK and PI3K/AKT pathways were determined by detecting the levels of phosphorylated ERK (p-ERK) and AKT (p-AKT). The relative fold change of p-ERK and p-AKT in the VAV2- and IQGAP1-expressed cells to that in the cells expressing empty vectors were calculated by normalizing to the total ERK and AKT expression levels respectively