Abstract
The purpose of this study was to analyze β-catenin and matrix metalloproteinase-2 (MMP-2) expression in non-small cell lung cancer (NSCLC) and to investigate the association between their expression and clinicopathologic characteristics of NSCLC patients. Immunohistochemistry was performed to examine β-catenin and MMP-2 protein expression in 39 resected NSCLC samples and 8 adjacent normal lung tissues. Statistical analysis with SPSS13.0 software was performed to investigate the association between β-catenin and MMP-2 expression and clinicopathologic features of the patients. Expression of cytosolic β-catenin in NSCLC tissue was significantly higher than that in normal tissues (P < 0.001). In addition, cytosolic protein expression of β-catenin in lung squamous cell carcinoma was significantly elevated compared to that in lung adenocarcinoma (P = 0.02). However, cell membrane protein expression of β-catenin in squamous cell carcinoma was lower than that in adenocarcinoma (P = 0.041). Cytosolic MMP-2 protein expression in NSCLC samples was significantly higher than that in normal tissues (P = 0.002). MMP-2 expression in N 1–2 NSCLC patients was significantly increased relative to N 0 patients (P = 0.019). However, statistical analysis showed no correlation between β-catenin and MMP-2 expression in NSCLC samples. Collectively, our results show that cytosolic protein expression of β-catenin in NSCLC samples is increased relative to normal lung tissues. Also, expression of β-catenin is significantly elevated in squamous cell carcinoma compared to that in lung adenocarcinoma subtypes. Additionally, MMP-2 expression in N 1–2 NSCLC tissues is higher than that in N 0 lung tissue. There is no correlation between β-catenin and MMP-2 expression in NSCLC, and our study suggests that evaluation of β-catenin and MMP-2 expression may have potential in diagnosis and progression in patients with NSCLC.
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We would like to thank the staff and research personnel in the Department of Thoracic Surgery at the First Bethune Hospital of Jilin University and the Department of Pathology of Jilin University. This work was supported by the project of Technology Development of Jilin Province (200705171).
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Li, GH., Cui, YS., Wu, QY. et al. Clinicopathologic significance of β-catenin and matrix metalloproteinase-2 expression in non-small cell lung cancer. Med Oncol 30, 437 (2013). https://doi.org/10.1007/s12032-012-0437-z
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DOI: https://doi.org/10.1007/s12032-012-0437-z