Linked Life Data

21523786

Source:http://linkedlifedata.com/resource/pubmed/id/21523786

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2011-7-8
pubmed:abstractText
Organic cation transporters (OCTs) mediate the transport of organic cations and some drugs (e.g., metformin and cimetidine). OCT1, OCT2, and OCT3 are located in the imprinting cluster of the insulin-like growth factor 2 receptor. It has been reported that OCT1 and OCT3 show a biallelic expression, whereas OCT2 undergoes maternal imprinting in the human placenta; however, a loss of the imprinting of OCT2 has recently been reported in some placental samples. This study investigated whether epigenetic mechanisms are involved in interindividual differences in the placental expression of OCT2. Because OCT2 mRNA levels were higher in biallelic samples than that in monoallelic samples, we compared the DNA methylation and chromatin modifications in the promoter regions. There was no remarkable difference in DNA methylation between the mono allelic samples and biallelic samples. In contrast, histone H3 acetylation (H3Ac) was increased in the biallelic samples. A significant negative correlation was observed between the trimethylation of lysine-9 on histone H3 (H3K9me3) and the OCT2 mRNA levels. Our results suggest that H3Ac plays a role in the allelic expression of OCT2. In addition, H3K9me3 in the OCT2 promoter may explain the interindividual differences in placental OCT2 mRNA levels.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1520-6017
pubmed:author
pubmed:copyrightInfo
Copyright © 2011 Wiley-Liss, Inc.
pubmed:issnType
Electronic
pubmed:volume
100
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3875-83
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Interindividual differences in placental expression of the SLC22A2 (OCT2) gene: relationship to epigenetic variations in the 5'-upstream regulatory region.
pubmed:affiliation
Department of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 8128582, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't