Results 31 to 40 of about 29,834 (207)

Oxygenase Catalyzed 5-Methylcytosine Hydroxylation

Chemistry & Biology, 2009
Recent reports identify the oxygenase catalyzed production of 5-hydroxymethylcytosine as a modification to mammalian DNA (Kriaucionis and Heintz, 2009; Tahiliani et al., 2009). This discovery has potential far-reaching implications for epigenetic regulation and will stimulate efforts to identify new nucleic acid modifications.
Loenarz, C, Schofield, C
openaire   +3 more sources

Deamination of 5-Methylcytosine Residues in Mammalian Cells [PDF]

Acta Naturae, 2009
DNA demethylation in mammalia occurs after fertilization and during embryogenesis and accompanies cell aging and cancer transformation. With the help of the primer extension reaction, MALDI MS and DNA cleavage by thymine DNA glycosylase deamination of 5-methylcytosine residues has been shown to take place when the model methylated DNA duplexes are ...
Gromenko, E., Spirin, P., Kubareva, E., Romanova, E., Prassolov, V., Shpanchenko, O., Dontsova, O.   +6 more
openaire   +4 more sources

Bacterial N4-methylcytosine as an epigenetic mark in eukaryotic DNA

Nature Communications, 2022
Eukaryotic DNA can be methylated as 5-methylcytosine and N6-methyladenine, but whether other forms of DNA methylation occur has been controversial. Here the authors show that a bacterial DNA methyltransferase was acquired >60 Mya in bdelloid rotifers ...
Fernando Rodriguez, Irina A. Yushenova, Daniel DiCorpo, Irina R. Arkhipova   +3 more
doaj   +1 more source

5‐Methylcytosine in genes with methylation‐dependent regulation [PDF]

FEBS Letters, 1993
An asymmetric distribution of deoxy‐5‐methylcytidylic acid‐inhibiting restriction sites (dcm‐sites) takes place in ten human genes regulated by 5‐methylcytosine. These genes are dcm‐site enriched upstream and dcm‐site poor downstream. Along them, there is a scattering of hypermethylatable introns and hypomethylatable exons with a common code: the 5mCpG
Volpe, Pietro, Iacovacci, Paolo, Butler, Richard H., Eremenko, Tamilla   +3 more
openaire   +2 more sources

Deciphering TAL effectors for 5-methylcytosine and 5-hydroxymethylcytosine recognition

Nature Communications, 2017
Transcription activator-like effector proteins recognise specific DNA sequences via tandem repeats. Here the authors demonstrate TALEs can recognise the methylated bases 5mC and 5hmC, enabling them to detect epigenetic modifications.
Yuan Zhang, Lulu Liu, Shengjie Guo, Jinghui Song, Chenxu Zhu, Zongwei Yue, Wensheng Wei, Chengqi Yi   +7 more
doaj   +1 more source

5-Methylcytosine and 5-hydroxymethylcytosine spatiotemporal profiles in the mouse zygote.

PLoS ONE, 2012
BackgroundIn the mouse zygote, DNA methylation patterns are heavily modified, and differ between the maternal and paternal pronucleus. Demethylation of the paternal genome has been described as an active and replication-independent process, although the ...
Juliette Salvaing, Tiphaine Aguirre-Lavin, Claire Boulesteix, Gaëtan Lehmann, Pascale Debey, Nathalie Beaujean   +5 more
doaj   +1 more source

Distribution of 5-methylcytosine in chromatin. [PDF]

Proceedings of the National Academy of Sciences, 1977
The content of 5-methylcytosine in eukaryotic DNA was measured by mass spectrometry. Almost equal amounts of methylated cytosine were found in the DNA of various tissues of the chicken. When chromatin or nuclei were digested with micrococcal nuclease, 50% of the DNA was found to be nuclease resistant.
A, Razin, H, Cedar
openaire   +2 more sources

Characterization of 5-methylcytosine and 5-hydroxymethylcytosine in human placenta cell types across gestation

Epigenetics, 2019
The placenta is an important organ in pregnancy, however, very little is understood about placental development at a molecular level. This includes the role of epigenetic mechanisms and how they change throughout gestation.
Rebecca L. Wilson, Maxime François, Tanja Jankovic-Karasoulos, Dale McAninch, Dylan McCullough, Wayne R. Leifert, Claire T. Roberts, Tina Bianco-Miotto   +7 more
doaj   +1 more source

Epigenetic reprogramming of lineage switching in cancer

FEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı, Burcu Akman, Ezgi Bağırsakçı, Nese Atabey, Serap Erkek‐Ozhan   +4 more
wiley   +1 more source

Epigenetic heterogeneity and plasticity in therapy‐induced tumor states through single‐cell multi‐omics

Molecular Oncology, EarlyView.
Single‐cell multi‐omics reveals epigenetic heterogeneity across therapy‐adaptive tumor states, including quiescent/dormant, drug‐tolerant persister, and EMT‐like phenotypes. By linking regulatory features with state‐associated biomarkers, these approaches inform biomarker‐guided therapeutic strategies for evolving tumors.
Hee Jung Kim, Hwiyeong Lee, Jin Hong, Daechan Park   +3 more
wiley   +1 more source