Fig. 2
a Western blot showing HuR and Folate receptor-α (FRA) expression levels in H1299, and CCD16 cells. b Optimization of DSPE-PEG5000-Folate mole fraction (%) in NP was achieved by determining the luciferase activity in H1299 cells that were transfected with NP modified with varying mole fractions (%) of DSPE-PEG5000-Folate and carrying a luciferase-expressing plasmid. Untreated cells served as control. Error bars denote SD