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Article

Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner

  • Authors:
    • Ting Xu
    • Bin Fan
    • Chunjiang Lv
    • Dajiang Xiao
  • View Affiliations / Copyright

    Affiliations: Department of Otolaryngology, The Second People's Hospital of Wuxi, Wuxi, Jiangsu 214002, P.R. China
  • Pages: 2631-2638
    |
    Published online on: March 23, 2015
       https://doi.org/10.3892/or.2015.3877
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Abstract

Slug is involved in the radioresistance and chemoresistance of several types of cancers. In the present study, we first studied the effect of Slug on the radioresistance of nasopharyngeal carcinoma (NPC). We established radioresistant CNE-2 cells (CNE-2-RES) by exposing CNE-2 cells to gradually increasing doses of irradiation (IR). We used lentiviral infection technique to stably knock down Slug and then studied the effects in vitro and in vivo. Western blotting and RT-PCR were applied to detect the protein and mRNA expression in NPC cells or xenograft tumor tissues, respectively. Colony forming assay was applied to detect the cell survival after IR. As a result, CNE-2-RES cells were successfully established, CNE-2-RES cells showed relatively higher expression of Slug, higher expression of p53 and lower expression of PUMA. Following inhibition of Slug, the radiosensitivity of NPC was enhanced both in vitro and in vivo. Slug inversely regulated PUMA and p53 expression in both CNE-2 and CNE-2-RES cells. Animal experiments showed the same trend of protein expression as the in vitro results. In conclusion, our study demonstrated that Slug overexpression in CNE-2-RES cells may result in the radioresistance of cells. Slug mediates CNE-2 radioresistance via downregulation of PUMA in both a p53-dependent and p53-independent manner.
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Copy and paste a formatted citation
Spandidos Publications style
Xu T, Fan B, Lv C and Xiao D: Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner. Oncol Rep 33: 2631-2638, 2015.
APA
Xu, T., Fan, B., Lv, C., & Xiao, D. (2015). Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner. Oncology Reports, 33, 2631-2638. https://doi.org/10.3892/or.2015.3877
MLA
Xu, T., Fan, B., Lv, C., Xiao, D."Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner". Oncology Reports 33.5 (2015): 2631-2638.
Chicago
Xu, T., Fan, B., Lv, C., Xiao, D."Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner". Oncology Reports 33, no. 5 (2015): 2631-2638. https://doi.org/10.3892/or.2015.3877
Copy and paste a formatted citation
x
Spandidos Publications style
Xu T, Fan B, Lv C and Xiao D: Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner. Oncol Rep 33: 2631-2638, 2015.
APA
Xu, T., Fan, B., Lv, C., & Xiao, D. (2015). Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner. Oncology Reports, 33, 2631-2638. https://doi.org/10.3892/or.2015.3877
MLA
Xu, T., Fan, B., Lv, C., Xiao, D."Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner". Oncology Reports 33.5 (2015): 2631-2638.
Chicago
Xu, T., Fan, B., Lv, C., Xiao, D."Slug mediates nasopharyngeal carcinoma radioresistance via downregulation of PUMA in a p53-dependent and -independent manner". Oncology Reports 33, no. 5 (2015): 2631-2638. https://doi.org/10.3892/or.2015.3877
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