Objective To explore the influence on the expression of elF4E and heparanase by antisense oligodeoxyribonucleotides (ASODN) transfection in human bladder carcinoma BIU-87 cells.Methods After transfecting the 2.5,5.O,7.5 μg/ml eIF4E ASODN into BIU-87 cells,at 24 h,48 h and 72 h,a cell control group (no transfection),a blank control group (empty liposomes) and a non-sense control group (transfected with non-sense ASODN) were established.The expression of eIF4E,HPA and mRNA were detected by in situ hybridration.The expression of eIF4 and HPA protein were detected by immunocytochemistry.SPSS 13.0 statistical software was used for statistical analysis.Results The expression quantity of eIF4E protein and mRNA were lower in the experimental groups ( protein:2.5 μg/ml ASODN treated 24 h,48 h,72 h were:3.55 ±0.52,3.52 ±0.51,3.22.±0.44 respectively; 5.0 μg/ml group:3.43 ±0.47,3.41 ± 0.46,3.19 ± 0.41 respectively ; 7.5 μg/ml group:2.36 ± 039,2.33 ± 0.37,2.05 ± 0.30 respectively.mRNA:2.5 μg/ml treated 24 h,48 h,72 h were:3.19 ±0.41,3.13 ±0.39,2.90 ±0.38 respectively ; 5.0 μg/ml group:3.07 ± 0.39,2.94 ± 038,2.27 ± 0.37 respectively ; 7.5 μg/ml group:2.22 ± 037,2.06 ± 0.30,1.95 ± 0.29 respectively.All data were less than those in the control groups (P ＜0.05).The expression quantity of HPA protein and mRNA were lower in experimental groups (protein:2.5 μg/ml ASODN treated 24 h,48 h,72 h were:4.44 ±0.55,4.40 ±0.54,3.99 ±0.52 respectively; 5.0 μg/ml group:4.41 ±0.55,4.21 ±0.53,3.77 ±0.50 respectively; 7.5 μg/ml group:4.02 ±0.52,3.98 ±0.52,2.32 ±0.37 respectively.mRNA:2.5 μg/ml treated 24 h,48 h,72 h were:4.12 ±0.51,3.75 ± 0.50,3.63 ± 0.45 respectively ; 5.0 μg/ml group:4.00 ± 0.51,3.71 ± 0.50,3.54 ± 0.44respectively ; 7.5 μg/ml group:3.87 ± 0.52,3.61 ± 0.49,2.08 ± 0.30 respectively).All data were less than in control groups ( P ＜ 0.05 ).There was a positive correlation on expression of HPA protein and eIF4E protein by inhibitory effect of eIF-4E ASODN (protein r=9.23,mRNA r=9.59,P ＜0.01).Conclusion eIF-4E ASODN might be used to inhibit the expression of eIF-4E gene and HPA gene in bladder cancer BIU-87 cells.