Background: VHL (von Hippel-Lindau), Runx-3 (Runt-related transcription factor 3), E-cadherin (Epithelial cadherin), P15 (INK4a, cyclin dependent kinase inhibitor), and P16 (INK4b) genes are essential in hematopoiesis. The aim of this study was to explore the correlation between gene expression and promoter methylation in CD34+ stem cells before and after differentiation to erythroid lineage. ...

background: ras-associated domain family 1 (rassf1a) and hypermethylated in cancer (hic1) genes are methylated more frequently in breast cancer. genetic factors that alter the dna methylation levels in normal and tumor tissues could therefore influence the susceptibility to this tumor phenotype. objective: we determined the frequency of aberrant methylation of hic1 and rassf1a gene promoters an...

conclusions no association was found between tfam promoter methylation and mes. the present study suggests that the tfam promoter methylation is not associated with risk of mes. objectives the aim of study was to investigate the possible association between promoter methylation of mitochondrial transcription factor a (tfam) and mes. patients and methods dna was extracted from peripheral blood o...

objective(s): the aim of this study was to investigate the methylation status and mrna expression levels of p15, death-associated protein kinase (dapk), and suppressor of cytokine signaling-1 (socs1) genes in multiple myeloma (mm). materials and methods: the bone marrow samples of 54 mm patients were collected and the methylation status of the p15, dapk, and socs1 gene promoter regions was dete...

In the recent years deregulation for microRNAs expression pattern have emerged as a possible molecular factor for carcinogenesis. It has been reported that the expression of miR-9 was down-regulated in human gastric adenocarcinoma. To figure out the molecular mechanism of this down regulation, the methylation status in promoters of miR-9 family loci were compared in the human gastric adenocarci...

Promoter methylation is one of the main epigenetic mechanisms that lead to the inactivation of tumor suppressor genes during carcinogenesis. Due to the reversible nature of DNA methylation, many studies have been performed to correct theses epigenetic defects by inhibiting DNA methyltransferases (DNMTs). In this case novel therapeutics especially siRNA oligonucleotides have been used to specifi...

objective: breast cancer is one of the most common malignancies in women worldwide. it is caused by a number of genetic and epigenetic factors. aberrant hypermethylation of the promoter regions in specific genes is a key event in the formation and progression of breast cancers as well as the dbc2 gene, as a tumor suppressor gene. different studies show that the dbc2 gene is inactivated through ...

results methylation in at least one gene was reported about 93.8%. the methylation of sfrp2 was reported in 39 out of the 48 subjects (81.2%) whereas methylation of mgmt was observed in 32 subjects (66.6%). conclusions the current study results showed that methylation of sfrp2 and mgmt play an important role in polyp formation. materials and methods forty eight tissue samples of polyp and adeno...

introduction: promoter methylation has an inhibitory effect on gene expression. thus we investigated methylation patterns of p15 gene in esophageal squamous cell carcinoma (escc), one of the most frequent and fetal cancers in the world. material and methods: p15 promoter methylation status of 30 escc and 10 normal specimens was investigated using methylation specific pcr. dna extracted from the...