Figure 7. Effects of other flavonoids on LDLR gene expression and ERK pathway.
HepG2 cells were cultured with the indicated flavonoids (100 μM) for 24 h, and total RNA and whole cell extracts were isolated. (a) Real-time PCR analysis was performed. mRNA levels were normalized to those of GAPDH mRNA and were expressed relative to those in the vehicle (DMSO)-treated controls. All data are expressed as mean ± SEM, n = 3. *P < 0.05. (b) Whole cell extracts were subjected to SDS-PAGE and immunoblotting (IB) with anti-p-ERK, anti-ERK, or anti-β-actin antibodies. Similar results were obtained in two separate experiments.