Tumor Biology

, Volume 35, Issue 7, pp 7155–7162 | Cite as

Examining Nek2 as a better proliferation marker in non-small cell lung cancer prognosis

  • Xinwen Zhong
  • Xiaojiao Guan
  • Qianze Dong
  • Shize Yang
  • Wenke Liu
  • Lin Zhang
Research Article

Abstract

The purpose of this study is to identify a better potential biomarker for the prognosis of patients with non-small cell lung cancer (NSCLC). The expressions of Nek2, MCM7, and Ki-67 were evaluated in 270 NSCLC tissues using immunohistochemical and immunofluorescence techniques. Associations between protein expression and clinical pathologic characters were assessed, and the impact on overall survival was analyzed. We detected high levels of Nek2, MCM7, and Ki-67 expression in 25.9, 35.2, and 24.4 % of NSCLC tissues, respectively. Overexpressions of Nek2 were detected more frequently in high T-stage and N-stage cases (P = 0.000, 0.011). The expressions of Nek2, MCM7, and Ki-67 were correlated with each other. Kaplan-Meier curves indicated that patients with overexpression of Nek2, MCM7, and Ki-67 had a poorer overall survival rate compared to those with low expression for all stages (P = 0.000). In particular, the patients with Nek2 overexpression had the most negative prognosis. Multivariate Cox regression analysis showed that Nek2, MCM7, and Ki-67 are independent prognostic indicators for NSCLC. Our data suggest that among Nek2 kinase, MCM7, and Ki-67, it is Nek2 kinase that is the more effective tumor proliferation marker of poor prognosis for NSCLC patients. Thus, Nek2 may represent a new potential target for NSCLC therapeutic intervention.

Keywords

Nek2 kinase Non-small cell lung cancer Prognostic indicators 

Notes

Acknowledgments

This study was supported by the National Natural Science Foundation of China (No. 30971137, 81272605). Xinwen Zhong and Xiaojiao Guan contributed equally to this work. We thank MedSci for excellent lingual revision.

Conflicts of interest

None

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2014

Authors and Affiliations

  • Xinwen Zhong
    • 1
  • Xiaojiao Guan
    • 2
    • 3
  • Qianze Dong
    • 3
    • 4
  • Shize Yang
    • 1
  • Wenke Liu
    • 1
  • Lin Zhang
    • 1
  1. 1.Department of Thoracic Surgery, The First Clinical CollegeChina Medical UniversityShenyangPeople’s Republic of China
  2. 2.Department of Pathology, The Second Clinical CollegeChina Medical UniversityShenyangChina
  3. 3.Department of Pathology, Basic Science CollegeChina Medical UniversityShenyangChina
  4. 4.Department of Pathology, The First Clinical CollegeChina Medical UniversityShenyangChina

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