Figure 3.
Osthole induces mitochondrial-dependent apoptosis in RBE and HCCC-9810 cells. (A) The mitochondrial membrane potential (ΔΨm) was measured using flow cytometric analysis. RBE and HCCC-9810 cells were treated with osthole (0, 50, 150 or 200 μM) and then stained with rhodamine 123. Cells with high ΔΨm are marked 'survival', and those with low ΔΨm are marked 'apoptosis'. (B) Apoptosis-related proteins in RBE and HCCC-9810 cells were analyzed by western blotting. GAPDH was used as a loading control. *P<0.05 and **P<0.01 vs. control.