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International Journal of Oncology
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Print ISSN: 1019-6439 Online ISSN: 1791-2423
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November 2013 Volume 43 Issue 5

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International Journal of Molecular Medicine

International Journal of Molecular Medicine

International Journal of Molecular Medicine is an international journal devoted to molecular mechanisms of human disease.

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International Journal of Oncology is an international journal devoted to oncology research and cancer treatment.

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Experimental and Therapeutic Medicine is an international journal devoted to laboratory and clinical medicine.

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Article

Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer

  • Authors:
    • Seongeun Kang
    • Byungtak Kim
    • Sung-Bin Park
    • Gookjoo Jeong
    • Han-Sung Kang
    • Ran Liu
    • Sun Jung Kim
  • View Affiliations / Copyright

    Affiliations: Department of Life Science, Dongguk University-Seoul, Seoul 100-715, Republic of Korea, Research Institute and Hospital, National Cancer Center, Gyeonggi do 411-764, Republic of Korea, Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, P.R. China
  • Pages: 1659-1665
    |
    Published online on: September 10, 2013
       https://doi.org/10.3892/ijo.2013.2094
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Abstract

Aberrant hypermethylation of promoter regions in specific genes is a key event in the formation and progression of breast cancers, and an increasing number of marker genes have been identified. However, few genes which show methylation change in accordance with the progression of breast cancer have been identified. To identify genes which consistently undergo promoter methylation alterations as the tumor develops from a benign to a malignant form, genome-wide methylation databases of breast cancer cell lines from stage I to stage IV were analyzed. Heatmap and cluster analysis revealed that the genome-wide methylation changes showed a good accordance with tumor progression. Seven out of 14,495 genes were found to be consistently increased alongside the promoter methylation level through the normal cell line to the cancer stage IV cell lines. NEFL, one of the in silico hypermethylated genes in cancer, showed hypermethylation and lower expression in the cancer cell line MDA-MB-231, as well as in cancer tissues (methylation, p<0.05; expression, p<0.01). The expression was restored by inducing demethylation of the promoter in MDA-MB-231 cells. Our findings may lend credence to the possibility of using tumor stage-specific alterations in methylation patterns as biomarkers for estimating prognosis and assessing treatment options for breast cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Kang S, Kim B, Park S, Jeong G, Kang H, Liu R and Kim SJ: Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer. Int J Oncol 43: 1659-1665, 2013.
APA
Kang, S., Kim, B., Park, S., Jeong, G., Kang, H., Liu, R., & Kim, S.J. (2013). Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer. International Journal of Oncology, 43, 1659-1665. https://doi.org/10.3892/ijo.2013.2094
MLA
Kang, S., Kim, B., Park, S., Jeong, G., Kang, H., Liu, R., Kim, S. J."Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer". International Journal of Oncology 43.5 (2013): 1659-1665.
Chicago
Kang, S., Kim, B., Park, S., Jeong, G., Kang, H., Liu, R., Kim, S. J."Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer". International Journal of Oncology 43, no. 5 (2013): 1659-1665. https://doi.org/10.3892/ijo.2013.2094
Copy and paste a formatted citation
x
Spandidos Publications style
Kang S, Kim B, Park S, Jeong G, Kang H, Liu R and Kim SJ: Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer. Int J Oncol 43: 1659-1665, 2013.
APA
Kang, S., Kim, B., Park, S., Jeong, G., Kang, H., Liu, R., & Kim, S.J. (2013). Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer. International Journal of Oncology, 43, 1659-1665. https://doi.org/10.3892/ijo.2013.2094
MLA
Kang, S., Kim, B., Park, S., Jeong, G., Kang, H., Liu, R., Kim, S. J."Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer". International Journal of Oncology 43.5 (2013): 1659-1665.
Chicago
Kang, S., Kim, B., Park, S., Jeong, G., Kang, H., Liu, R., Kim, S. J."Stage-specific methylome screen identifies that NEFL is downregulated by promoter hypermethylation in breast cancer". International Journal of Oncology 43, no. 5 (2013): 1659-1665. https://doi.org/10.3892/ijo.2013.2094
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