نتایج جستجو برای: dnmts
تعداد نتایج: 359 فیلتر نتایج به سال:
The epigenetic down-regulation of genes is emerging as a possible underlying mechanism of the GABAergic neuron dysfunction in schizophrenia. For example, evidence has been presented to show that the promoters associated with reelin and GAD67 are down-regulated as a consequence of DNA methyltransferase (DNMT)-mediated hypermethylation. Using neuronal progenitor cells to study this regulation, we...
DNA methyltransferase (DNMT) 1 and 3 are primarily responsible for abnormal methylation in cancer. Unlike these DNMTs, DNA methyltransferase 3-like (DNMT3L) harbors no conserved catalytic domain, and has been shown to function as a regulatory cofactor for DNA methylation. However, it is unclear whether DNMT3L directly regulates DNA methylation in cancer cells. To address this, we investigated t...
BACKGROUND Series of epigenetic events happen during preimplantation development. Therefore assistant reproduction techniques (ART) have the potential to disrupt epigenetic regulation during embryo development. The purpose of this study was to investigate whether defects in methylation patterns in blastocyst due to superovulation originate from abnormal expression of Dnmts. METHODS Low- (6 IU...
The breast cancer susceptibility gene 1 (BRCA1) inactivation in sporadic epithelial ovarian carcinoma (EOC) is common and low BRCA1 expression is associated with promoter hypermethylation. The clinical validation of BRCA1 methylation as a prognostic marker in EOC remains unresolved. The aim of the present study was to determine the aberrant promoter methylation of BRCA1 in benign and malignant ...
Studies in rats and mice have established that maternal nutrition induces epigenetic modifications, sometimes permanently, that alter gene expression in the fetus, which in turn leads to phenotypic changes. However, limited data is available on the influence of maternal diet on epigenetic modifications and gene expression in sheep. Therefore, the objectives of this study were to investigate the...
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