[Inhibitory effect of ganciclovir on the HSV1-tk positive subcutaneous tumors transplanted with human ovarian cancer in nude mice].
OBJECTIVE
To investigate the inhibitory effect in vivo of ganciclovir (GCV) on the growth of human ovarian cancer cells (AO) transducted with the thymidine kinase gene of herpes simplex virus I type (HSV1-tk).


METHODS
Tumors were induced in nude mice by subcutaneous injection of AO cells and AO cells carried with HSV1-tk gene from China strain (AO/HSV1-tk cells). When the growing tumors were visible, GCV was injected daily into the peritoneum of the nude mice.


RESULTS
The average weights of survived AO/HSV1-tkc tumors and AO tumors treated with GCV were 0.087 +/- 0.036 g and 0.661 +/- 0.260 g respectively. Most of the survived AO/HSV1-tkc cells treated with GCV were characterized by hypertrophy and necrosis, but their nuclear chromatins predominantely took the forms of heterchromatins.


CONCLUSIONS
GCV could effectively inhibit the growth of HSV1-tk positive human ovarian cancer cells in vivo, but the nuclei of the survival tumor cells appeared to proliferate actively. As the same results of in vitro experiments, this may suggest that HSV1-tk/GCV gene therapeutic system might be combined with S-phase chemotherapy to increase the long-term effect.
Obstetrics and Gynecology Hospital, Shanghai Medical University.
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Xu
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Zhang
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Jin
D000818:Animals; D000998:Antiviral Agents / Q000494:pharmacology; D005260:Female; D015774:Ganciclovir / Q000494:pharmacology*; D015316:Genetic Therapy; D006801:Humans; D007274:Injections, Intraperitoneal; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D010051:Ovarian Neoplasms / Q000473:pathology* / Q000821:virology; D018139:Simplexvirus / Q000187:drug effects* / Q000235:genetics; D014162:Transfection; D014407:Tumor Cells, Cultured
D000998:Antiviral Agents; D015774:Ganciclovir