Journal
NUTRITION REVIEWS
Volume 63, Issue 6, Pages 183-195Publisher
OXFORD UNIV PRESS INC
DOI: 10.1301/nr.2005.Jun.183-195
Keywords
DNA methylation; folate; cancer; gene expression
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Funding
- NIGMS NIH HHS [S06GM53933] Funding Source: Medline
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DNA methylation is a heritable epigenetic feature that is associated with transcriptional silencing, X-chromosome inactivation, genetic imprinting, and genomic stability. The addition of the methyl group is catalyzed by a family of DNA methyltransferases whose cosubstrates are DNA and S-adenosylmethionine, the latter being derived from the methionine cycle. Aberrant DNA methylation is linked to numerous pathologies, including cancer. The purpose of this review is to describe DNA methylation and its functions, to examine the relationship between dietary methyl insufficiency and DNA methylation, and to evaluate the associations between DNA methylation and cancer.
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