LINE-1 methylation status in prostate cancer and non-neoplastic tissue adjacent to tumor in association with mortality
| Autor: | Valentina Fiano, Daniela Zugna, Chiara Grasso, Morena Trevisan, Luisa Delsedime, Luca Molinaro, Anna Gillio-Tos, Franco Merletti, Lorenzo Richiardi |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Epigenetics, Vol 12, Iss 1, Pp 11-18 (2017) |
| Druh dokumentu: | article |
| ISSN: | 1559-2294 1559-2308 15592294 |
| DOI: | 10.1080/15592294.2016.1261786 |
| Popis: | Aberrant DNA methylation seems to be associated with prostate cancer behavior. We investigated LINE-1 methylation in prostate cancer and non-neoplastic tissue adjacent to tumor (NTAT) in association with mortality from prostate cancer. We selected 157 prostate cancer patients with available NTAT from 2 cohorts of patients diagnosed between 1982–1988 and 1993–1996, followed up until 2010. An association between LINE-1 hypomethylation and prostate cancer mortality in tumor was suggested [hazard ratio per 5% decrease in LINE-1 methylation levels: 1.40, 95% confidence interval (CI): 0.95–2.01]. After stratification of the patients for Gleason score, the association was present only for those with a Gleason score of at least 8. Among these, low (80%) LINE-1 methylation was associated with a hazard ratio of 4.68 (95% CI: 1.03–21.34). LINE-1 methylation in the NTAT was not associated with prostate cancer mortality. Our results are consistent with the hypothesis that tumor tissue global hypomethylation may be a late event in prostate cancerogenesis and is associated with tumor progression. |
| Databáze: | Directory of Open Access Journals |
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