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Review
.2005 Jun;63(6 Pt 1):183-95.
doi: 10.1301/nr.2005.jun.183-195.

DNA methylation, genomic silencing, and links to nutrition and cancer

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Review

DNA methylation, genomic silencing, and links to nutrition and cancer

Dale C McCabe et al. Nutr Rev.2005 Jun.

Abstract

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 co-substrates 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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