Medulloblastoma and ependymoma cells display increased levels of 5-carboxylcytosine and elevated TET1 expression

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• 作者：Ashley Ramsawhook ; Lara Lewis ; Beth Coyle ; Alexey Ruzov
• 关键词：DNA methylation ; 5 ; hydroxymethylcytosine ; 5 ; carboxylcytosine ; Paediatric brain tumours ; Medulloblastoma ; Ependymoma ; Immunohistochemistry
• 刊名：Clinical Epigenetics
• 出版年：2017
• 出版时间：December 2017
• 年：2017
• 卷：9
• 期：1
• 全文大小：2842KB
• 刊物主题：Human Genetics; Gene Function;
• 出版者：BioMed Central
• ISSN：1868-7083
• 卷排序：9

文摘

BackgroundAlteration of DNA methylation (5-methylcytosine, 5mC) patterns represents one of the causes of tumorigenesis and cancer progression. Tet proteins can oxidise 5mC to 5-hydroxymethylcytosine (5hmC), 5-formylcytosine and 5-carboxylcytosine (5caC). Although the roles of these oxidised forms of 5mC (oxi-mCs) in cancer pathogenesis are still largely unknown, there are indications that they may be involved in the mechanisms of malignant transformation. Thus, reduction of 5hmC content represents an epigenetic hallmark of human tumours, and according to our recent report, 5caC is enriched in a proportion of breast cancers and gliomas. Nevertheless, the distribution of oxi-mCs in paediatric brain tumours has not been assessed.