Research on 10-23 DNAzymes inhibit the expression of Bcl-2 and induce apoptosis of human hepatoma cells / 中国基层医药
Chinese Journal of Primary Medicine and Pharmacy
;
(12): 3226-3228, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-442506
ABSTRACT
Objective To study the effects of cleavage of Bcl-2 by two DNAzymes on apoptosis of human hepatoma cell line (HepZ1).Methods Two “10-23” DNAzymes(DzT and DzTi) targeting Bcl-2 mRNA and their analogues(DzT' and DzTi') were synthesized and used to cleave Bcl-2 mRNA in vitro and in BEL-7402 cells.The RT-PCR was performed to assess the cleaving efficiency.Expression of Bcl-2 protein was determined by immunofluorescent method.Cell apoptosis was detected by flow cytometry.Results The unmodified Enzymes DzT,and its modified form DzTi,which had an added 3'-inverted thymidine,could effectively cleave Bcl-2 mRNA in vitro.After transfected into BEL-7402 cells,DzTi exhibited more powerful cleaving ability than DzT,significantly down-regulated the level of Bcl-2 protein(P <0.01) and inhibited the cell growth(P <0.05).The results of flow cytometry suggested that the apoptosis rate of DzT and DzTi significantly increased,appeared apoptotic peak.Cell cycle was delayed in DzT and DzTi group,proportion of cells in G0/G1 increased,S phase cells decreased.Conclusion The synthesized DNAzymes could effectively cleave Bcl-2 mRNA,decrease the level of Bcl-2 protein and induce hepatoma cells apoptosis.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Primary Medicine and Pharmacy
Year:
2013
Type:
Article
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