XAF1 expression levels in a non-small cell lung cancer cohort and its potential association with carcinogenesis

  • Authors:
    • Luciene Schluckebier
    • Veronica Aran
    • Joyce De Moraes
    • Heitor Paiva
    • Cinthya Sternberg
    • Carlos Gil Ferreira
  • View Affiliations

  • Published online on: May 30, 2017     https://doi.org/10.3892/or.2017.5680
  • Pages: 402-410
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Abstract

The process of lung carcinogenesis is still not well understood and involves different levels of regulation of several genes. The search for molecular biomarkers, which can be applicable to clinical practice, has been the focus of various studies. XIAP-associated factor 1 (XAF1) was previously shown to be downregulated in many types of tumors, including squamous cell lung cancer. XAF1 is a pro-apoptotic protein and its restoration was found to sensitize cancer cells to apoptotic stimuli; however, the precise mechanism involved in the downregulation of XAF1 in tumors is unknown and promoter hypermethylation or heat-shock transcription factor 1 (HSF1) may be involved. Therefore, the aim of the present study was to evaluate the expression of XAF1 in tumors and adjacent non-tumor specimens from non-small cell lung cancer (NSCLC) patients, and its potential association with various factors including clinicopathological characteristics and other genes involved in NSCLC. Our results indicated that XAF1 expression was markedly altered in NSCLC tumor samples when compared to that found in normal lung tissues. Predominantly, XAF1 was downregulated in the tumors, except in never-smoker patients. In addition, XAF1 may also be important in the whole cell stress mechanism where the p53 status is crucial.
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July-2017
Volume 38 Issue 1

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Schluckebier L, Aran V, De Moraes J, Paiva H, Sternberg C and Ferreira C: XAF1 expression levels in a non-small cell lung cancer cohort and its potential association with carcinogenesis. Oncol Rep 38: 402-410, 2017
APA
Schluckebier, L., Aran, V., De Moraes, J., Paiva, H., Sternberg, C., & Ferreira, C. (2017). XAF1 expression levels in a non-small cell lung cancer cohort and its potential association with carcinogenesis. Oncology Reports, 38, 402-410. https://doi.org/10.3892/or.2017.5680
MLA
Schluckebier, L., Aran, V., De Moraes, J., Paiva, H., Sternberg, C., Ferreira, C."XAF1 expression levels in a non-small cell lung cancer cohort and its potential association with carcinogenesis". Oncology Reports 38.1 (2017): 402-410.
Chicago
Schluckebier, L., Aran, V., De Moraes, J., Paiva, H., Sternberg, C., Ferreira, C."XAF1 expression levels in a non-small cell lung cancer cohort and its potential association with carcinogenesis". Oncology Reports 38, no. 1 (2017): 402-410. https://doi.org/10.3892/or.2017.5680