Linked Life Data

18949402

Source:http://linkedlifedata.com/resource/pubmed/id/18949402

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2008-10-24
pubmed:abstractText
The epithelial cell adhesion molecule (EpCAM) gene has been found to be highly expressed in carcinomas of various origins; however, the molecular mechanisms underlying the transcriptional regulation of EpCAM remain poorly understood. The purpose of this experiment was to study the relationship between EpCAM gene overexpression and CpG island methylation status in the promoter region in cell cultures and normal colon epithelial and colorectal cancer tissues. Real-time quantitative PCR and bisulfite sequencing PCR were employed to detect EpCAM gene expression and to analyze the methylation status of the CpG islands. In addition, EpCAM gene expression and methylation status of CpG islands were studied in promoter methylation cell lines treated with a DNA methyltransferase inhibitor. It was found that most CpG dinucleotides were unmethylated in cell lines and cancer tissues where the EpCAM gene was highly expressed whereas most CpG dinucleotides were methylated in EpCAM gene unexpressed cell lines and normal colon tissues. When cells were treated with demethylating agent, CpG islands were demethylated, although EpCAM gene expression did not increase suggesting that unmethylation of the EpCAM promoter region was not responsible for EpCAM overexpression. The results of the study described herein suggest that unmethylation of the EpCAM promoter region was associated with EpCAM overexpression; however, it was not responsible for EpCAM overexpression by itself. Further research is required to determine which factors are responsible for EpCAM gene expression.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1021-335X
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1061-7
pubmed:dateRevised
2011-10-28
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
CpG island methylation status in the EpCAM promoter region and gene expression.
pubmed:affiliation
Department of Anatomy and Brain Research, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, P.R. China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't