Results 31 to 40 of about 60,468 (238)

Unraveling the functional role of DNA demethylation at specific promoters by targeted steric blockage of DNA methyltransferase with CRISPR/dCas9

open access: yesNature Communications, 2021
The causal relationship between DNA demethylation and gene expression regulation has not yet been fully resolved. Here the authors develop a nuclease-dead Cas9 (dCas9) and gRNA site-specific targeting approach to physically block DNA methylation at ...
Daniel M. Sapozhnikov, Moshe Szyf
doaj   +1 more source

Epigenetic Changes during Hepatic Stellate Cell Activation. [PDF]

open access: yesPLoS ONE, 2015
Hepatic stellate cells (HSC), which can participate in liver regeneration and fibrogenesis, have recently been identified as liver-resident mesenchymal stem cells.
Silke Götze   +3 more
doaj   +1 more source

DEMETER plant DNA demethylase induces antiviral response by interferon signalling in animal cells

open access: yesScientific Reports, 2017
DNA methylation is a prominent epigenetic modification in plants and animals regulated by similar mechanisms but the process of DNA demethylation is profoundly different.
Young Geun Mok   +3 more
doaj   +1 more source

NEIL1 and NEIL2 DNA glycosylases protect neural crest development against mitochondrial oxidative stress

open access: yeseLife, 2019
Base excision repair (BER) functions not only in the maintenance of genomic integrity but also in active DNA demethylation and epigenetic gene regulation.
Dandan Han   +8 more
doaj   +1 more source

Vitamin C Rescues in vitro Embryonic Development by Correcting Impaired Active DNA Demethylation

open access: yesFrontiers in Cell and Developmental Biology, 2021
During preimplantation development, a wave of genome-wide DNA demethylation occurs to acquire a hypomethylated genome of the blastocyst. As an essential epigenomic event, postfertilization DNA demethylation is critical to establish full developmental ...
Meiqiang Chu   +7 more
doaj   +1 more source

Age-associated alterations in DNA methylation and expression of methyltransferase and demethylase genes in Arabidopsis thaliana

open access: yesBiologia Plantarum, 2016
Little is known about the contributions of DNA methylation/demethylation to plant aging and senescence. We used Arabidopsis thaliana to study how increasing age of an annual plant species influences DNA methylation.
Z. V. Ogneva   +2 more
doaj   +1 more source

Fine mapping and characterization of RLL6 locus required for anti-silencing of a transgene and DNA demethylation in Arabidopsisthaliana

open access: yesFrontiers in Genetics, 2022
DNA methylation patterns in plants are dynamically shaped by the antagonistic actions of DNA methylation and demethylation pathways. Although the DNA methylation pathway has been well studied, the DNA demethylation pathway, however, are not fully ...
Xiangyu Wang   +4 more
doaj   +1 more source

Epigenetic Regulation of Genomic Stability by Vitamin C

open access: yesFrontiers in Genetics, 2021
DNA methylation plays an important role in the maintenance of genomic stability. Ten-eleven translocation proteins (TETs) are a family of iron (Fe2+) and α-KG -dependent dioxygenases that regulate DNA methylation levels by oxidizing 5-methylcystosine ...
John P. Brabson   +6 more
doaj   +1 more source

Structure and function of dioxygenases in histone demethylation and DNA/RNA demethylation [PDF]

open access: yesIUCrJ, 2014
Iron(II) and 2-oxoglutarate (2OG)-dependent dioxygenases involved in histone and DNA/RNA demethylation convert the cosubstrate 2OG and oxygen to succinate and carbon dioxide, resulting in hydroxylation of the methyl group of the substrates and subsequent demethylation.
Cheng Dong   +4 more
openaire   +3 more sources

DNA demethylation in erythroleukaemia cells

open access: yesFEBS Letters, 1990
Despite a fall in the proportion of CGs methylated, evidence has not been obtained for significant demethylation of prelabelled DNA when mouse erythroleukaemia cells are induced to differentiate. There is, however, a delay in the methylation of the DNA that is synthesised in the early period of induction, leading to its undermethylation by 30–50% and ...
Adams, R.L.P., Hanley, A., Rinaldi, A.
openaire   +2 more sources

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