Elevated DNA methylation in malignant tumors of the sinonasal tract and its association with patient survival
Jazyk angličtina Země Česko Médium print-electronic
Typ dokumentu časopisecké články
PubMed
29581595
DOI
10.5507/bp.2018.012
Knihovny.cz E-zdroje
- Klíčová slova
- DNA methylation, biomarkers, epigenetics, sinonasal carcinoma,
- MeSH
- dospělí MeSH
- epigeneze genetická genetika MeSH
- geny nádorové genetika MeSH
- Kaplanův-Meierův odhad MeSH
- lidé středního věku MeSH
- lidé MeSH
- metylace DNA fyziologie MeSH
- mladý dospělý MeSH
- nádorové biomarkery fyziologie MeSH
- nádory vedlejších dutin nosních diagnóza genetika mortalita MeSH
- prognóza MeSH
- promotorové oblasti (genetika) genetika MeSH
- retrospektivní studie MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- nádorové biomarkery MeSH
BACKGROUND: Epigenetic modifications have been recognized as an important mechanism underlying carcinoma progression. DNA methylation plays an important role in cancer biology and represents potentially heritable changes in gene expression that do not involve DNA sequence. The aim of this study was to investigate promoter methylation of selected genes in sinonasal carcinoma by comparison with noncancerous sinonasal tissue. METHODS: To search for epigenetic events (methylation in 25 tumor suppressor genes) we used MS-MLPA (Methylation-specific multiplex ligation-dependent probe amplification) to compare methylation status of 59 formalin fixed, paraffin embedded tissue samples of sinonasal carcinomas with 18 control samples. The most important changes in methylation were confirmed using MSP (Methylation specific PCR). Detected alterations in methylation were compared with clinicopathological characteristics. RESULTS: Using a 20% cut-off for methylation (MS-MLPA), we found significantly higher methylation in GATA5 (P=0.0005), THSB1 (P=0.0002) and PAX5 (P=0.03) genes in the sinonasal cancer group compared to the control group. Methylation in five or more genes was associated with impaired overall survival (P=0.017). CONCLUSION: These findings provide evidence that alterations in methylation profile may be one of the major mechanisms in sinonasal carcinogenesis. In addition, changes in methylation could potentially be used as prognostic factors of sinonasal carcinoma and may have implications for future individualized therapy based on epigenetic changes.
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