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Article

Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma

  • Authors:
    • Xin Liu
    • Dongdong Qi
    • Jujie Qi
    • Zeshu Mao
    • Xiangdan Li
    • Jinhui Zhang
    • Jinzi Li
    • Wenbin Gao
  • View Affiliations / Copyright

    Affiliations: Institute of Molecular Medicine, Medical College of Eastern Liaoning University, Dandong, Liaoning 118000, P.R. China, Department of Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116000, P.R. China, Traditional Chinese Medical Hospital of Anqiu City, Anqiu, Shandong 262100, P.R. China, Department of Pediatrics, Yanbian University Hospital, Yanji, Jilin 133002, P.R. China
  • Pages: 155-162
    |
    Published online on: October 30, 2015
       https://doi.org/10.3892/or.2015.4365
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Abstract

In the present study, we explored the role of DEK expression for the prognostic evaluation of non-small cell lung carcinoma (NSCLC). DEK protein and mRNA expression levels were detected in NSCLC cells and fresh tissue samples of NSCLC paired with adjacent non-tumor tissues, respectively. NSCLC cases (n=196) meeting strict follow-up criteria were selected for immunohistochemical staining of DEK protein. Correlations between DEK expression and clinicopathological features of the NSCLC cases were evaluated using Chi-square tests. Survival rates were calculated using the Kaplan-Meier method, and the relationship between prognostic factors and patient overall survival was analyzed using Cox proportional hazard analysis. Based on the results, the levels of DEK protein and mRNA were significantly upregulated in 6 fresh tissue samples of NSCLC. Immunohistochemical analysis showed that the DEK expression rate was significantly higher in the NSCLC samples compared with either the adjacent non-tumor tissues or normal lung tissues. DEK expression was correlated with poor differentiation and late pathological stage of NSCLC. DEK expression was also correlated with low disease-free survival and overall survival rates. In the early-stage group, disease-free and overall survival rates of patients with DEK expression were significantly lower than those of patients without DEK expression. Further analysis using a Cox proportional hazard regression model revealed that DEK expression emerged as a significant independent hazard factor for the overall survival rate of patients with NSCLC. Consequently, DEK plays an important role in the progression of NSCLC. DEK may potentially be used as an independent biomarker for the prognostic evaluation of NSCLC.
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Copy and paste a formatted citation
Spandidos Publications style
Liu X, Qi D, Qi J, Mao Z, Li X, Zhang J, Li J and Gao W: Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma. Oncol Rep 35: 155-162, 2016.
APA
Liu, X., Qi, D., Qi, J., Mao, Z., Li, X., Zhang, J. ... Gao, W. (2016). Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma. Oncology Reports, 35, 155-162. https://doi.org/10.3892/or.2015.4365
MLA
Liu, X., Qi, D., Qi, J., Mao, Z., Li, X., Zhang, J., Li, J., Gao, W."Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma". Oncology Reports 35.1 (2016): 155-162.
Chicago
Liu, X., Qi, D., Qi, J., Mao, Z., Li, X., Zhang, J., Li, J., Gao, W."Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma". Oncology Reports 35, no. 1 (2016): 155-162. https://doi.org/10.3892/or.2015.4365
Copy and paste a formatted citation
x
Spandidos Publications style
Liu X, Qi D, Qi J, Mao Z, Li X, Zhang J, Li J and Gao W: Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma. Oncol Rep 35: 155-162, 2016.
APA
Liu, X., Qi, D., Qi, J., Mao, Z., Li, X., Zhang, J. ... Gao, W. (2016). Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma. Oncology Reports, 35, 155-162. https://doi.org/10.3892/or.2015.4365
MLA
Liu, X., Qi, D., Qi, J., Mao, Z., Li, X., Zhang, J., Li, J., Gao, W."Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma". Oncology Reports 35.1 (2016): 155-162.
Chicago
Liu, X., Qi, D., Qi, J., Mao, Z., Li, X., Zhang, J., Li, J., Gao, W."Significance of DEK overexpression for the prognostic evaluation of non-small cell lung carcinoma". Oncology Reports 35, no. 1 (2016): 155-162. https://doi.org/10.3892/or.2015.4365
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