Open Access

Expression and survival significance of B-cell-specific Moloney murine leukemia virus integration site 1 and matrix metalloproteinase-9 in non-small-cell lung cancer

  • Authors:
    • Mingkui Mu
    • Yang Song
    • Bin Zhang
  • View Affiliations

  • Published online on: September 29, 2016     https://doi.org/10.3892/ol.2016.5209
  • Pages: 3715-3722
  • Copyright: © Mu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

One of the main challenges in lung cancer research is identifying patients at high risk of progression and metastasis following surgical resection. In the present study, the prognostic significance of B‑cell‑specific Moloney murine leukemia virus integration site 1 (BMI1) and matrix metalloproteinase-9 (MMP9) in non‑small‑cell lung cancer (NSCLC) was evaluated. BMI1 and MMP9 expression in tumors from 132 surgical NSCLC patients [squamous cell carcinoma (SCC), n=79; and adenocarcinoma (AD), n=53] was evaluated by immunohistochemistry. The clinical significance was determined using multivariate Cox regression analysis, Kaplan‑Meier curves and the log‑rank test. High BMI1 expression was more frequent in SCC compared with that in AD (P=0.015). Comparisons between the expression of BMI1 and that of other known biological markers revealed that the expression of BMI1 was correlated with that of MMP9 (χ2=4.241, P=0.039) in SCC. Although an association was not identified between high BMI1 expression and overall survival (OS) in NSCLC or AD, high BMI1 expression was an unfavorable predictor of survival in SCC according to the survival curves (P=0.038). In addition, combined high BMI1 and MMP9 expression levels were significantly correlated with SCC nodal/distant metastasis (χ2=6.392, P=0.014). Multivariate Cox proportional model analysis demonstrated that this combined marker was an independent prognostic indicator of OS in SCC (P=0.025; hazard ratio = 12.963; 95% confidence interval: 1.142‑7.637). Therefore, this study demonstrated that combined BMI1 and MMP9 expression may be used as a marker for the progression and metastasis of SCC. These results may aid in the elucidation of the potential mechanism underlying the involvement of BMI1 and MMP9 in tissue-specific SCC progression.
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November-2016
Volume 12 Issue 5

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Spandidos Publications style
Mu M, Song Y and Zhang B: Expression and survival significance of B-cell-specific Moloney murine leukemia virus integration site 1 and matrix metalloproteinase-9 in non-small-cell lung cancer. Oncol Lett 12: 3715-3722, 2016.
APA
Mu, M., Song, Y., & Zhang, B. (2016). Expression and survival significance of B-cell-specific Moloney murine leukemia virus integration site 1 and matrix metalloproteinase-9 in non-small-cell lung cancer. Oncology Letters, 12, 3715-3722. https://doi.org/10.3892/ol.2016.5209
MLA
Mu, M., Song, Y., Zhang, B."Expression and survival significance of B-cell-specific Moloney murine leukemia virus integration site 1 and matrix metalloproteinase-9 in non-small-cell lung cancer". Oncology Letters 12.5 (2016): 3715-3722.
Chicago
Mu, M., Song, Y., Zhang, B."Expression and survival significance of B-cell-specific Moloney murine leukemia virus integration site 1 and matrix metalloproteinase-9 in non-small-cell lung cancer". Oncology Letters 12, no. 5 (2016): 3715-3722. https://doi.org/10.3892/ol.2016.5209