ABSTRACT
Objective To study the effect of bcl-2 antisense oligodexynucleotides on the apoptosis in human small-cell lung cancer cell line NCI-H69. Methods Cultured cells were divided into 4 groups: antisense oligodexynucleotides(ASODN), sense oligodexynucleotides (SODN), nonsense oligodexynucleotides (NSODN) and control.The different bcl-2 oligodexynucleotides was transfected into corresponding cells using oligofectamine.The expression of bcl-2 was examined by Western blot.The apoptosis rates were measured by flow cytometry (FCM).Results The bcl-2 expression in ASODN group was significantly inhibited compared to the control group, SODN and NSODN groups, but it was not obviously inhibited in SODN and NSODN groups.The apoptosis rate of ASODN group in different concentration was (9.97±1.54) %, (15.28±1.73) % and (21.41±1.85) % respectively, it was significantly higher than that of the control group (F = 7.19-15.48,q = 5.21-7.98, P ＜0.01). Conclusion The bcl-2 ASODN could enhance cell apoptosis rate in small-cell lung cancer by blocking bcl-2 gene effectively.