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Objective:The aim of this study was to observe the affection of targeted therapy to plasmid AF-pGL3-hTERT-TK in HCC cell line HepG2.Methods:We constructed therapeutic plasmid pGL3-hTERT-TK(containing suicide gene TK that promoted by promoter of hTERT) and was conjugated with AF-liposome(a protein that can combine with the receptor ASPGR on HCC cell surface).Then we transfected HCC cell line HepG2 and hepatic cell L02 with AF-pGL3-hTERT-TK,observed the effects of therapeutic plasmid AF-pGL3-hTERT-TK for HCC cell line growth and apoptosis in vitro by Flow cytometry and Tunnel method.Results:Our results showed that TK gene was 1100 bp in plasmid pGL3-hTERT-TK.Plasmid pGL3-hTERT-TK can effectively transfect HCC cell HepG2 and the transfection rate was 8.91%.By recognizing and combining effects of receptor protein ASPGR on HCC cell surface the therapeutic plasmid AF-pGL3-hTERT-TK could easily enter into HCC cell HepG2 and induce its apoptosis.The apoptosis rate was 85.87% while only 8.65% in L02 cell.Four days after AF-pGL3-hTERT-TK transfected HepG2 was intervention by ganciclovir(GCV),a lot of apoptotic bodies were found by Tunnel analysis,while little apoptotic body was found in hepatic cell L02.Conclusion:AF-pGL3-hTERT-TK can target to HCC cell line and induce it to apoptosis,almost has no influence on hepatic cell L02.AF-pGL3-hTERT-TK has the potential therapeutic effects for HCC.
Objective: The aim of this study was to observe the affection of targeted therapy to plasmid AF-pGL3-hTERT-TK in HCC cell line HepG2.Methods: We constructed vaccine plasmid pGL3-hTERT-TK (containing suicide gene TK that promoted by promoter of hTERT) and was conjugated with AF-liposome (a protein that can combine with the receptor ASPGR on HCC cell surface) .Then we transfected HCC cell line HepG2 and hepatic cell L02 with AF-pGL3-hTERT-TK, observed the effects of therapeutic plasmid AF-pGL3-hTERT-TK for HCC cell line growth and apoptosis in vitro by Flow cytometry and Tunnel method. Results: Our results showed that TK gene was 1100 bp in plasmid pGL3-hTERT-TK.Plasmid pGL3-hTERT-TK can effectively transfect HCC cell HepG2 and the transfection rate was 8.91% .By recognizing and combining effects of receptor protein ASPGR on HCC cell surface the therapeutic plasmid AF-pGL3-hTERT-TK could easily enter into HCC cell HepG2 and induce its apoptosis. The rate of apoptosis was 85.87% while only 8.65% i nL02 cell. Four days after AF-pGL3-hTERT-TK transfected HepG2 was intervention by ganciclovir (GCV), a lot of apoptotic bodies were found by Tunnel analysis, while little apoptotic body was found in hepatic cell L02.Conclusion: AF- pGL3-hTERT-TK can target to HCC cell line and induce it to apoptosis, almost has no influence on hepatic cell L02. AF-pGL3-hTERT-TK has the potential therapeutic effects for HCC.