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Article

The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells

  • Authors:
    • Yosuke Nakagawa
    • Atsuhisa Kajihara
    • Akihisa Takahashi
    • Natsuko Kondo
    • Eiichiro Mori
    • Tadaaki Kirita
    • Takeo Ohnishi
  • View Affiliations / Copyright

    Affiliations: Particle Radiation Oncology Research Center, Research Reactor Institute, Kyoto University, Sennan-gun, Osaka 590-0494, Japan, Department of Oral and Maxillofacial Surgery, School of Medicine, Nara Medical University, Kashihara, Nara 634‑8521, Japan, Advanced Scientific Research Leaders Development Unit, Gunma University, Maebashi, Gunma 371‑8511, Japan, Department of Radiation Oncology, School of Medicine, Nara Medical University, Kashihara, Nara 634-8521, Japan
  • Pages: 2001-2006
    |
    Published online on: March 11, 2014
       https://doi.org/10.3892/or.2014.3080
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Abstract

5-Fluorouracil (5-FU) is widely used in clinical cancer therapy. It is commonly used either alone or in combination with other drugs and/or radiation for head and neck, and other types of cancers. 5-FU induces DNA double-strand breaks (DSBs). Inhibition of the repair of 5-FU-induced DSBs may improve the therapeutic response in many tumors to this anticancer agent. The aim of the present study was to further our understanding of the pathways which are involved in the repair of 5-FU-induced DSBs. Cell survival after drug treatment was examined with colony forming assays using Chinese hamster lung fibroblast cells or Chinese hamster ovary cell lines which are deficient in DSB repair pathways involving the homologous recombination repair-related genes BRCA2 and XRCC2, and the non-homologous end joining repair-related genes DNA-PKcs and Ku80. It was found that BRCA2 was involved in such repair, and may be effectively targeted to inhibit the repair of 5-FU-induced damage. Observations showed that knockdown of BRCA2 using small interference RNA suppression increased the sensitivity to 5-FU of human oral cancer cell lines (SAS and HSC3). These findings suggest that downregulation of BRCA2 may be useful for sensitizing tumor cells during 5-FU chemotherapy.
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Copy and paste a formatted citation
Spandidos Publications style
Nakagawa Y, Kajihara A, Takahashi A, Kondo N, Mori E, Kirita T and Ohnishi T: The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells. Oncol Rep 31: 2001-2006, 2014.
APA
Nakagawa, Y., Kajihara, A., Takahashi, A., Kondo, N., Mori, E., Kirita, T., & Ohnishi, T. (2014). The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells. Oncology Reports, 31, 2001-2006. https://doi.org/10.3892/or.2014.3080
MLA
Nakagawa, Y., Kajihara, A., Takahashi, A., Kondo, N., Mori, E., Kirita, T., Ohnishi, T."The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells". Oncology Reports 31.5 (2014): 2001-2006.
Chicago
Nakagawa, Y., Kajihara, A., Takahashi, A., Kondo, N., Mori, E., Kirita, T., Ohnishi, T."The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells". Oncology Reports 31, no. 5 (2014): 2001-2006. https://doi.org/10.3892/or.2014.3080
Copy and paste a formatted citation
x
Spandidos Publications style
Nakagawa Y, Kajihara A, Takahashi A, Kondo N, Mori E, Kirita T and Ohnishi T: The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells. Oncol Rep 31: 2001-2006, 2014.
APA
Nakagawa, Y., Kajihara, A., Takahashi, A., Kondo, N., Mori, E., Kirita, T., & Ohnishi, T. (2014). The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells. Oncology Reports, 31, 2001-2006. https://doi.org/10.3892/or.2014.3080
MLA
Nakagawa, Y., Kajihara, A., Takahashi, A., Kondo, N., Mori, E., Kirita, T., Ohnishi, T."The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells". Oncology Reports 31.5 (2014): 2001-2006.
Chicago
Nakagawa, Y., Kajihara, A., Takahashi, A., Kondo, N., Mori, E., Kirita, T., Ohnishi, T."The BRCA2 gene is a potential molecular target during 5-fluorouracil therapy in human oral cancer cells". Oncology Reports 31, no. 5 (2014): 2001-2006. https://doi.org/10.3892/or.2014.3080
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