Epigenetics is the study of heritable changes in gene expression that are not encoded in the DNA of the genome. Encouraging evidence has linked epigenetic effects to oncogenesis, progression and treatment of cancer (1), the regulation of development and function of the nervous system (2), gene regulation (3), cellular stress events (3), nutrigenomics (4), aging and DNA repair (5). Considerable ongoing efforts are directed towards identifying the dynamic functions of various modifications to DNA and its associated proteins and elucidating their mechanisms.
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