Figure 7. Western blotting analysis of PKR on PI3K/AKT and NF-κB signaling pathways, which suggested that overexpression of PKR activated A, PI3K/AKT pathway and B, NF-κB pathway. UVB treatment time was 16 h. UVB: ultraviolet B; PKR: RNA-dependent protein kinase; PI3K: phosphatidylinositol-3 kinase.