Fig. 5

Quantification of surface and total CEA-expression in HCT116 and WiDr colorectal cancer cells after NaB and 5-AZA treatments. Low-CEA-expressing HCT116 cells and moderate-CEA-expressing colorectal cancer cells were treated with NaB (0.1 mM) for 10 h and 5-AZA (1 μM) for 72 h. Treatment with 5-FU (1 μM) for 24 h was used as positive control. Treatments with either NaB or 5-AZA induced the expressions of total CEA protein (a and b) and surface CEA (c and d) in both HCT116 and WiDr cells