Abstract
DNA methyltransferases (DNMTs) are widely expressed in the brain, dictating the transcriptional activity of genes through various epigenetic mechanisms. Functional irregularities, alterations in the activity, and aberrant expression levels of DNMTs have been linked to various neurodevelopmental abnormalities, neuropsychiatric disorders, neurodegenerative diseases, and brain cancer. A continuously increasing number of studies address the roles DNMTs have in the brain, to reach a better understanding of their involvement in disease-related pathophysiologies, which in turn is required to dissect their applicability as potential therapeutic targets. This chapter provides an overview of DNMT function in the developing and the adult brain, putting a spotlight on their role in orchestrating diverse aspects of brain development, memory, and aging, followed by a discussion of associated neurodevelopmental and neurodegenerative disorders, and the implications in brain cancer.
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