RESUMO
Objective To discuss the effect of 5-Aza-CdR on pancreatic carcinoma Capan-2 cell proliferation and PCDH8 gene expression.Methods Pancreatic carcinoma Capan-2 cells were treated with different doses of 5-Aza-CdR with or without gemcitabine,negative control group without drug,0.08μmol/L group with 0.08μmol/L 5-Aza-CdR,0.40 μmol/L group with 0.40 μmol/L 5-Aza-CdR,2.00 μmol/L group with 2.00 μmol/L 5-Aza-CdR,10 μmol/L group with 10 μmol/L 5-Aza-CdR,50 μmol/L group with 50 μmol/L 5-Aza-CdR. The inhibition ratio of Capan-2 cell proliferation were observed by MTT assay and PCDH8 gene and protein expression were detected by RT-PCR and Western blot. Results The inhibition ratio was increased with 5-Aza-CdR dose increasing(P<0.01),but decreased apparently with times extending(P<0.01). Inhibition ratio in 5-Aza-CdR and gemcitabine group was higher than those with only 5-Aza-CdR or gemcitabine groups(P<0.05 or P<0.01).The levels of PCDH8 gene and protein expression were increased significantly in 5-Aza-CdR treatment groups,with dose dependent (P <0.01 ).Conclusion 5-Aza-CdR can inhibit the proliferation of pancreatic carcinoma Capan-2 cell proliferation,and increase PCDH8 gene expression. The inhibition effect is strong when combined with gemcitabine.