Liu WQ, Yang J, Dong J. Effects of HSV-TK+GFP/GCV suicide gene therapy system on mouse pancreatic cancer cells.
Shijie Huaren Xiaohua Zazhi 2009;
17:1498-1503. [DOI:
10.11569/wcjd.v17.i15.1498]
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Abstract
AIM: To study in vitro therapeutic effect on mouse pancreatic cancer, as well as the bystander effect with HSV-TK suicide gene in combination with prodrug GCV.
METHODS: HSV-TK and GFP were inserted into pcDNA3.1 (+) to construct pcDNA3.1+/HSV-TK+GFP, and pcDNA3.1+/HSV-TK+GFP was transferred into mouse pancreatic cancer cell MPC by Lipofectin. We then added GCV to these gene-modified cells and studied the sensitivity of the cells to GCV as well as the bystander effect.
RESULTS: The gene modified pancreatic cancer cells MPC/HSV-TK+GFP were successfully developed. In vitro experiments showed that when the MPC/HSV-TK+GFP cells accounted for 10% of hybrid cells, the low concentration (20 mg/L) of GCV was about 50% of tumor cell killing. In vivo results showed that the low concentration of GCV killed the cells. And tumor growth of the mouse model was inhibited.
CONCLUSION: Our data demonstrate MPC/HSV-TK+GFP cells are sensitive to the treatment of GCV compared with unmodified tumor cells, and remarkable bystander effect is seen.
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