Non-CpG methylation-a key epigenetic modification in cancer.

Autor: Ramasamy D, Deva Magendhra Rao AK, Rajkumar T, Mani S
Jazyk: angličtina
Zdroj: Briefings in functional genomics [Brief Funct Genomics] 2021 Sep 11; Vol. 20 (5), pp. 304-311.
DOI: 10.1093/bfgp/elab035
Abstrakt: The methylation of cytosine residues that precede adenine/thymine or other cytosine nucleotides instead of guanine in DNA is known as non-CpG methylation. It is a pronounced epigenetic modification with a central role in gene regulation similar to CpG methylation. Due to technological limitations, the locus-specific role of non-CpG methylation was scarcely understood. At present, high-throughput analyses and improved enrichment methods can elucidate the role of genome-wide non-CpG methylation distributions. Although the functional basis of non-CpG methylation in regulating gene expression control is known, its role in cancer development is yet to be ascertained. This review sheds light on the possible mechanism of non-CpG methylation in embryos and developed tissues with a special focus on cancer development and progression. In particular, the maintenance and alteration of non-CpG methylation levels and the crucial factors that determine this level of non-CpG methylation and its functional role in cancer are discussed.
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Databáze: MEDLINE