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International Journal of Oncology
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Article

Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells

  • Authors:
    • Tina Napso
    • Fuad Fares
  • View Affiliations / Copyright

    Affiliations: Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Mount Carmel, 31905 Haifa, Israel
  • Pages: 1971-1979
    |
    Published online on: April 11, 2014
       https://doi.org/10.3892/ijo.2014.2386
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Abstract

Zebularine, a potent DNA methyltransferase inhibitor, is potentially able to influence gene regulation and thereby alters cell behavior. This study illustrates the effect of zebularine on human squamous cell carcinoma (SCC-9 and SCC-25) in vitro. The results indicated that zebularine significantly (P<0.05) reduced viability and DNA synthesis of treated cancer cells, by induction of cell cycle arrest at G2/M phase and apoptosis in both tested cell lines. This effect was confirmed to be mediated through p21/CHK1- and caspase 3/PARP‑dependent pathways, respectively. However, no methylation was observed in the promoter region of the upregulated p21 and CHK1 genes. This may indicate that the alteration of p21 and CHK1 following zebularine administration was not due to inhibition of methylation of their promoter. Interestingly, it was observed that zebularine continued to influence cell viability for a week following its withdrawal. This may indicate feasibility of novel drug administration strategies, in which, daily administration of the drug replaced by weekly use, leading to improved therapeutic process and cost-effectiveness of the treatment in head and neck cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Napso T and Fares F: Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells. Int J Oncol 44: 1971-1979, 2014.
APA
Napso, T., & Fares, F. (2014). Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells. International Journal of Oncology, 44, 1971-1979. https://doi.org/10.3892/ijo.2014.2386
MLA
Napso, T., Fares, F."Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells". International Journal of Oncology 44.6 (2014): 1971-1979.
Chicago
Napso, T., Fares, F."Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells". International Journal of Oncology 44, no. 6 (2014): 1971-1979. https://doi.org/10.3892/ijo.2014.2386
Copy and paste a formatted citation
x
Spandidos Publications style
Napso T and Fares F: Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells. Int J Oncol 44: 1971-1979, 2014.
APA
Napso, T., & Fares, F. (2014). Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells. International Journal of Oncology, 44, 1971-1979. https://doi.org/10.3892/ijo.2014.2386
MLA
Napso, T., Fares, F."Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells". International Journal of Oncology 44.6 (2014): 1971-1979.
Chicago
Napso, T., Fares, F."Zebularine induces prolonged apoptosis effects via the caspase-3/PARP pathway in head and neck cancer cells". International Journal of Oncology 44, no. 6 (2014): 1971-1979. https://doi.org/10.3892/ijo.2014.2386
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