Document Detail


Differential methylation of STOX1 in human placenta.
MedLine Citation:
PMID:  20716964     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
The 10q22 chromosomal region with genomic linkage to pre-eclampsia in Dutch females shows a parent-of-origin effect with maternal transmission of the Y153H susceptibility allele of the STOX1 gene. Although the CpG island within the STOX1 promoter region shows no differential methylation, this study describes the identification of a differentially methylated region (DMR) in intron 1 of the STOX1 gene. Methylation coincides with STOX1 expression, where high methylation leads to reduced expression. In the SGHPL-5 extravillous trophoblast cell line allele-specific expression was observed in a subset of cells. Although no allele-specific expression could be detected in early placenta samples, these samples did show an increase in methylation when they were homozygous for the Y153H susceptibility allele. Allele-specific methylation was observed in column extravillous trophoblast samples with the methylated allele being paternal in origin. We conclude that STOX1 is paternally imprinted, maternally expressed, with the DMR identified in this study showing parental-specific methylation in specific cell-types, hypothesized to occur in villous cytotrophoblasts, and proven in column extravillous trophoblasts originating from the anchoring villus. In other (placental) cells methylation is independent of parental origin, but regulates STOX1 expression with the Y153H genotype directing the level of methylation.
Authors:
Marie van Dijk; Sascha Drewlo; Cees B M Oudejans
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-11-01
Journal Detail:
Title:  Epigenetics : official journal of the DNA Methylation Society     Volume:  5     ISSN:  1559-2308     ISO Abbreviation:  Epigenetics     Publication Date:    2010 Nov-Dec
Date Detail:
Created Date:  2010-12-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101265293     Medline TA:  Epigenetics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  736-42     Citation Subset:  IM    
Affiliation:
Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands. m.vdijk@vumc.nl
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Descriptor/Qualifier:
Grant Support
ID/Acronym/Agency:
MGC-13299//Canadian Institutes of Health Research

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