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Cytosine methyltransferases as tumor markers
Authors:Pavlopoulou Athanasia  Kossida Sophia
Affiliation:Biomedical Research Foundation of the Academy of Athens, Department of Biotechnology, Bioinformatics & Medical Informatics Team, Soranou Efesiou 4, 11527 Athens, Greece.
Abstract:Changes in DNA methylation patterns is a prominent characteristic of human tumors. Tumor cells display reduced levels of genomic DNA methylation and site-specific CpG island hypermethylation. Methylation of CpG dinucleotides is catalyzed by the enzyme family of DNA methyltransferases (DNMTs). In this review, the role of DNA methylation and DNMTs as key determinants of carcinogenesis is further elucidated. The chromatin modifying proteins that are known to interact with DNMTs are also described. Finally, the role of DNMTs as potential therapeutic targets is addressed.
Keywords:Biomarkers   cancer   chromatin modification   CpG methylation   DNMTs   epigenetic therapy   oncogenes   tumor suppressor genes.
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