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Article

Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines

  • Authors:
    • Young‑Kyun Kim
    • Na‑Youn Koo
    • Pil‑Young Yun
  • View Affiliations / Copyright

    Affiliations: Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam‑si, Gyeonggi‑do 463‑707, Republic of Korea
  • Pages: 136-142
    |
    Published online on: October 30, 2014
       https://doi.org/10.3892/ol.2014.2648
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Abstract

CKD‑602 (7‑[2‑(N‑isopropylamino) ethyl]‑(20S)‑camptothecin, belotecan) is a synthetic water‑soluble camptothecin derivative and topoisomerase I inhibitor that has been shown to exert a clinical anticancer effect on various types of tumor. In the present study, the anticancer effects of CKD‑602 on the following three human oral squamous cell carcinoma (OSCC) cell lines originating from Korean cancer patients: YD‑8 (tongue), YD‑9 (buccal mucosa) and YD‑38 (lower gingiva) were analyzed. The apoptotic proportion of the cells and cell cycle position were analyzed using flow cytometry. The expression of cell cycle regulatory proteins was detected by western blot analysis. CKD‑602 was demonstrated to exert a time‑ and dose‑dependent antiproliferative effect in all cell lines in vitro, however, susceptibility to CKD‑602 at 72 h following treatment varied among the three cell lines, with 50% inhibition of cell viability at concentrations of 2.4 µg/ml for YD‑8, 0.18 µg/ml for YD‑9 and 0.05 µg/ml for YD‑38. To investigate the underlying mechanism of the CKD‑602 antiproliferative effect, a cell cycle‑analysis was conducted in the three OSCC cell lines and CKD‑602 treatment was observed to induce G2/M phase arrest. Furthermore, western blot analysis revealed that the expression levels of phospho‑cdc2 (Tyr 15), cyclin A2 and cyclin B1 were increased in a time‑dependent manner, following the administration of CKD‑602. In the fluorescence‑activated cell sorting analysis, the number of apoptotic cells was also increased in a dose‑dependent manner following CKD‑602 treatment of the OSCC cell lines. The results suggest that CKD‑602 may inhibit the proliferation of OSCC oral cancer cells derived from samples from Korean patients by apoptosis and by G2/M phase arrest.
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Copy and paste a formatted citation
Spandidos Publications style
Kim YK, Koo NY and Yun PY: Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines. Oncol Lett 9: 136-142, 2015.
APA
Kim, Y., Koo, N., & Yun, P. (2015). Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines. Oncology Letters, 9, 136-142. https://doi.org/10.3892/ol.2014.2648
MLA
Kim, Y., Koo, N., Yun, P."Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines". Oncology Letters 9.1 (2015): 136-142.
Chicago
Kim, Y., Koo, N., Yun, P."Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines". Oncology Letters 9, no. 1 (2015): 136-142. https://doi.org/10.3892/ol.2014.2648
Copy and paste a formatted citation
x
Spandidos Publications style
Kim YK, Koo NY and Yun PY: Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines. Oncol Lett 9: 136-142, 2015.
APA
Kim, Y., Koo, N., & Yun, P. (2015). Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines. Oncology Letters, 9, 136-142. https://doi.org/10.3892/ol.2014.2648
MLA
Kim, Y., Koo, N., Yun, P."Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines". Oncology Letters 9.1 (2015): 136-142.
Chicago
Kim, Y., Koo, N., Yun, P."Anticancer effects of CKD‑602 (Camtobell®) via G2/M phase arrest in oral squamous cell carcinoma cell lines". Oncology Letters 9, no. 1 (2015): 136-142. https://doi.org/10.3892/ol.2014.2648
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