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Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer

  • Authors:
    • Joyce L. Moraes
    • Amanda B. Moraes
    • Veronica Aran
    • Marcelo R. Alves
    • Luciene Schluckbier
    • Mariana Duarte
    • Edson Toscano
    • Mauro Zamboni
    • Cinthya Sternberg
    • Emanuela de Moraes
    • José R. Lapa E Silva
    • Carlos Gil Ferreira
  • View Affiliations / Copyright

    Affiliations: Clinical Research Division, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil, Evandro Chagas Clinical Research Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil, Department of Thoracic Surgery, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil, Institute of Thoracic Medicine, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil, National Clinical Cancer Research Network (RNPCC) SCTIE/MS, Rio de Janeiro, Brazil
    Copyright: © Moraes et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 494-502
    |
    Published online on: February 16, 2017
       https://doi.org/10.3892/mco.2017.1167
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Abstract

The enzyme cyclooxygenase 2 (COX‑2) is known to be involved in tumorigenesis and metastasis in certain types of cancer. Nevertheless, the prognostic value of COX‑2 overexpression and its polymorphisms in patients with non‑small cell lung cancer (NSCLC) have yet to be fully elucidated. The aim of the present study was to investigate the association between the three most commonly studied COX‑2 gene polymorphisms (‑1195 G/A, ‑765 G/C and 8473 T/C) with COX‑2 expression and lung cancer risk in a Brazilian cohort. In the present hospital based, case‑control retrospective study, 104 patients with NSCLC and 202 cancer free control subjects were genotyped for ‑1195 G/A, ‑765 G/C and 8473 T/C polymorphisms using allelic discrimination with a reverse transcription quantitative polymerase chain reaction method. COX‑2 mRNA expression was analyzed in surgically resected tumors from 34 patients with NSCLC. The results revealed that COX‑2 expression levels were higher in tumor tissue compared with normal lung tissue. However, this overexpression of COX‑2 was not associated with the patient outcome, and furthermore, none of the analyzed polymorphisms were associated with the risk of developing lung cancer, COX‑2 overexpression, or the overall survival of the patients with NSCLC. Taken together, the findings described in the present study do not support a major role for COX‑2 polymorphisms and COX‑2 overexpression in lung carcinogenesis within the Brazilian population.
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Copy and paste a formatted citation
Spandidos Publications style
Moraes JL, Moraes AB, Aran V, Alves MR, Schluckbier L, Duarte M, Toscano E, Zamboni M, Sternberg C, de Moraes E, de Moraes E, et al: Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer. Mol Clin Oncol 6: 494-502, 2017.
APA
Moraes, J.L., Moraes, A.B., Aran, V., Alves, M.R., Schluckbier, L., Duarte, M. ... Gil Ferreira, C. (2017). Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer. Molecular and Clinical Oncology, 6, 494-502. https://doi.org/10.3892/mco.2017.1167
MLA
Moraes, J. L., Moraes, A. B., Aran, V., Alves, M. R., Schluckbier, L., Duarte, M., Toscano, E., Zamboni, M., Sternberg, C., de Moraes, E., Lapa E Silva, J. R., Gil Ferreira, C."Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer". Molecular and Clinical Oncology 6.4 (2017): 494-502.
Chicago
Moraes, J. L., Moraes, A. B., Aran, V., Alves, M. R., Schluckbier, L., Duarte, M., Toscano, E., Zamboni, M., Sternberg, C., de Moraes, E., Lapa E Silva, J. R., Gil Ferreira, C."Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer". Molecular and Clinical Oncology 6, no. 4 (2017): 494-502. https://doi.org/10.3892/mco.2017.1167
Copy and paste a formatted citation
x
Spandidos Publications style
Moraes JL, Moraes AB, Aran V, Alves MR, Schluckbier L, Duarte M, Toscano E, Zamboni M, Sternberg C, de Moraes E, de Moraes E, et al: Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer. Mol Clin Oncol 6: 494-502, 2017.
APA
Moraes, J.L., Moraes, A.B., Aran, V., Alves, M.R., Schluckbier, L., Duarte, M. ... Gil Ferreira, C. (2017). Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer. Molecular and Clinical Oncology, 6, 494-502. https://doi.org/10.3892/mco.2017.1167
MLA
Moraes, J. L., Moraes, A. B., Aran, V., Alves, M. R., Schluckbier, L., Duarte, M., Toscano, E., Zamboni, M., Sternberg, C., de Moraes, E., Lapa E Silva, J. R., Gil Ferreira, C."Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer". Molecular and Clinical Oncology 6.4 (2017): 494-502.
Chicago
Moraes, J. L., Moraes, A. B., Aran, V., Alves, M. R., Schluckbier, L., Duarte, M., Toscano, E., Zamboni, M., Sternberg, C., de Moraes, E., Lapa E Silva, J. R., Gil Ferreira, C."Functional analysis of polymorphisms in the COX‑2 gene and risk of lung cancer". Molecular and Clinical Oncology 6, no. 4 (2017): 494-502. https://doi.org/10.3892/mco.2017.1167
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