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Epigenetic inheritance is unfaithful at intermediately methylated CpG sites

Hay, Amir D ; Kessler, Noah J ; Gebert, Daniel ; Takahashi, Nozomi ; Tavares, Hugo ; Teixeira, Felipe K ; Ferguson-Smith, Anne C

Nature communications, 2023-09, Vol.14 (1), p.5336-5336, Article 5336 [Periódico revisado por pares]

England: Nature Publishing Group

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  • Título:
    Epigenetic inheritance is unfaithful at intermediately methylated CpG sites
  • Autor: Hay, Amir D ; Kessler, Noah J ; Gebert, Daniel ; Takahashi, Nozomi ; Tavares, Hugo ; Teixeira, Felipe K ; Ferguson-Smith, Anne C
  • Assuntos: Base Sequence ; Bisulfite ; Cell Line ; Cell lines ; CpG islands ; Deoxyribonucleic acid ; DNA ; DNA Methylation ; DNMT1 protein ; Epigenesis, Genetic ; Epigenetics ; Heredity ; Nucleotides
  • É parte de: Nature communications, 2023-09, Vol.14 (1), p.5336-5336, Article 5336
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: DNA methylation at the CpG dinucleotide is considered a stable epigenetic mark due to its presumed long-term inheritance through clonal expansion. Here, we perform high-throughput bisulfite sequencing on clonally derived somatic cell lines to quantitatively measure methylation inheritance at the nucleotide level. We find that although DNA methylation is generally faithfully maintained at hypo- and hypermethylated sites, this is not the case at intermediately methylated CpGs. Low fidelity intermediate methylation is interspersed throughout the genome and within genes with no or low transcriptional activity, and is not coordinately maintained between neighbouring sites. We determine that the probabilistic changes that occur at intermediately methylated sites are likely due to DNMT1 rather than DNMT3A/3B activity. The observed lack of clonal inheritance at intermediately methylated sites challenges the current epigenetic inheritance model and has direct implications for both the functional relevance and general interpretability of DNA methylation as a stable epigenetic mark.
  • Editor: England: Nature Publishing Group
  • Idioma: Inglês
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