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Global analysis of CpG methylation reveals epigenetic control of the radiosensitivity in lung cancer cell lines
DC Field | Value | Language |
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dc.contributor.author | Kim, E-H | - |
dc.contributor.author | Park, A-K | - |
dc.contributor.author | Dong, S. M. | - |
dc.contributor.author | Ahn, J-H | - |
dc.contributor.author | Park, W-Y | - |
dc.date.accessioned | 2012-06-05T05:17:52Z | - |
dc.date.available | 2012-06-05T05:17:52Z | - |
dc.date.issued | 2010-08 | - |
dc.identifier.citation | ONCOGENE; Vol.29 33; 4725-4731 | ko_KR |
dc.identifier.issn | 0950-9232 | - |
dc.identifier.uri | https://hdl.handle.net/10371/76842 | - |
dc.description.abstract | Epigenetic regulation by CpG methylation has an important role in tumorigenesis as well as in the response to cancer therapy. To analyze the mechanism of epigenetic control of radiosensitivity, the CpG methylation profiles of radiosensitive H460 and radioresistant H1299 human non-small cell lung cancer (NSCLC) cell lines were analyzed using microarray profiling. These analyses revealed 1091 differentially methylated genes (DMG) (absolute difference of mean beta-values, |Delta(beta) over bar > 0.5), including genes involved in cell adhesion, cell communication, signal transduction and transcriptional regulation. Among the 747 genes hypermethylated in radioresistant H1299 cells, CpG methylation of SERPINB5 and S100A6 in radioresistant H1299 cells was confirmed by methylation-specific PCR. Reverse transcriptase-PCR showed higher expression of these two genes in radiosensitive H460 cells compared with radioresistant H1299 cells. Downregulation of SERPINB5 or S100A6 by small interfering RNA in H460 cells increased the resistance of these cells to ionizing radiation. In contrast, promoter CpG sites of 344 genes, including CAT and BNC1, were hypomethylated in radioresistant H1299 cells. Suppression of CAT or BNC1 mRNA expression in H1299 cells also reduced the resistance of these cells to ionizing radiation. Thus, we identified DMGs by genome-wide CpG methylation profiling in two NSCLC cell lines with different responses to ionizing radiation, and our data indicated that these differences may be critical for epigenetic regulation of radiosensitivity in lung cancer cells. Oncogene (2010) 29, 4725-4731; doi:10.1038/onc.2010.223; published online 7 June 2010 | ko_KR |
dc.language.iso | en | ko_KR |
dc.publisher | NATURE PUBLISHING GROUP | ko_KR |
dc.subject | CpG methylation | ko_KR |
dc.subject | radiosensitivity | ko_KR |
dc.subject | ionizing radiation | ko_KR |
dc.subject | microarray | ko_KR |
dc.title | Global analysis of CpG methylation reveals epigenetic control of the radiosensitivity in lung cancer cell lines | ko_KR |
dc.type | Article | ko_KR |
dc.identifier.doi | 10.1038/onc.2010.223 | - |
dc.citation.journaltitle | ONCOGENE | - |
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