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September 2012 Volume 30 Issue 3

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Article

Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy

  • Authors:
    • Nianqu Zhang
    • Lei Zhao
    • Shuai Ma
    • Ming Gu
    • Xinyu Zheng
  • View Affiliations / Copyright

    Affiliations: Department of Surgical Oncology and Department of General Surgery, The First Affiliated Hospital, China Medical University, Shenyang, P.R. China, Center of Experimental Technology and Medical Research, China Medical University, Shenyang, P.R. China
  • Pages: 659-665
    |
    Published online on: June 14, 2012
       https://doi.org/10.3892/ijmm.2012.1033
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Abstract

In contrast to other enzymes, Drosophila melanogaster deoxyribonucleoside kinase (Dm-dNK) has a broad substrate specificity and high catalytic rate when transferred in human cells. This makes it a promising therapeutic agent when administered together with several cytotoxic nucleoside analogs, such as gemcitabine 2',2'-difluoro-deoxycytidine (dFdC). Therefore, lentiviral vectors, which potentially allow stable long-term transgene expression, are good candidates for gene delivery vehicles. In the present study, we successfully developed a lentivirus-mediated transgene expression system of Dm-dNK under the control of hTERT promoter against the breast cancer cell line (Bcap37), the gastric cancer cell line (SGC7901) and the normal fibroblast cell line (WI-38). Moreover, we also analyzed its targeted cytotoxicity in vitro with treatment of the prodrug dFdC. Bcap37 tumor growth was inhibited in nude mice. Both cancer cell lines exhibited apparent cytotoxicity when infected with recombinant lentivirus constructs expressing Dm-dNK. In contrast, lentivirus-infected WI-38 cells exhibited less cytotoxicity. These data suggested that Dm-dNK was sensitive to dFdC, and it resulted in synergistic growth inhibition and apoptosis induction in vitro. In addition, Lenti-hTERT-dNK/dFdC also suppressed tumor growth in vivo. Our results suggest that the Lenti-hTERT-dNK/dFdC system is a safe and feasible treatment strategy in the development of suicide gene therapy.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang N, Zhao L, Ma S, Gu M and Zheng X: Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy. Int J Mol Med 30: 659-665, 2012.
APA
Zhang, N., Zhao, L., Ma, S., Gu, M., & Zheng, X. (2012). Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy. International Journal of Molecular Medicine, 30, 659-665. https://doi.org/10.3892/ijmm.2012.1033
MLA
Zhang, N., Zhao, L., Ma, S., Gu, M., Zheng, X."Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy". International Journal of Molecular Medicine 30.3 (2012): 659-665.
Chicago
Zhang, N., Zhao, L., Ma, S., Gu, M., Zheng, X."Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy". International Journal of Molecular Medicine 30, no. 3 (2012): 659-665. https://doi.org/10.3892/ijmm.2012.1033
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang N, Zhao L, Ma S, Gu M and Zheng X: Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy. Int J Mol Med 30: 659-665, 2012.
APA
Zhang, N., Zhao, L., Ma, S., Gu, M., & Zheng, X. (2012). Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy. International Journal of Molecular Medicine, 30, 659-665. https://doi.org/10.3892/ijmm.2012.1033
MLA
Zhang, N., Zhao, L., Ma, S., Gu, M., Zheng, X."Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy". International Journal of Molecular Medicine 30.3 (2012): 659-665.
Chicago
Zhang, N., Zhao, L., Ma, S., Gu, M., Zheng, X."Lentivirus-mediated expression of Drosophila melanogaster deoxyribonucleoside kinase driven by the hTERT promoter combined with gemcitabine: A potential strategy for cancer therapy". International Journal of Molecular Medicine 30, no. 3 (2012): 659-665. https://doi.org/10.3892/ijmm.2012.1033
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