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Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Screening for differential methylation status in human placenta in preeclampsia using a CpG island plus
Rui-Zhe Jia1, Xiang Zhang, Ping Hu
1Department of Obstetrics, Nanjing Maternity and Child Health Hospital of Nanjing Medical University, Nanjing, P.R. China.
International Journal of Molecular Medicine
|May 4, 2012
Summary
Preeclampsia (PE) involves abnormal DNA methylation in placental tissue, affecting maternal and infant health. This study identified 296 genes with altered methylation, offering potential insights into PE
Area of Science:
- Epigenetics
- Genomics
- Obstetrics
Background:
- Preeclampsia (PE) poses significant risks to maternal and fetal health.
- The exact causes of PE are not fully understood, but placental dysfunction is implicated.
- DNA methylation alterations in the placenta may contribute to abnormal development and function.
Purpose of the Study:
- To conduct a genome-wide analysis of DNA methylation profiles in placentas from pregnancies with severe preeclampsia.
- To identify specific genes with aberrant DNA methylation associated with PE.
- To validate the findings using established molecular techniques.
Main Methods:
- Genome-wide DNA methylation analysis using methylated DNA immunoprecipitation (MeDIP) and CpG island plus promoter microarray.
- Analysis of placental tissues from normal and preeclamptic pregnancies.
- Validation of candidate gene methylation status using bisulfite sequencing PCR (BSP).
Main Results:
- Identified 296 genes with significantly aberrant DNA methylation in preeclampsia.
- Aberrantly methylated genes were frequently located on chromosomes 1, 12, and 19.
- Methylation patterns of six specific genes (CAPN2, EPHX2, ADORA2B, SOX7, CXCL1, CDX1) were validated.
Conclusions:
- Aberrant DNA methylation patterns are present in preeclampsia placentas.
- These methylation changes may play a role in the pathophysiology of preeclampsia.
- Further research is warranted to explore the prognostic and therapeutic potential of these findings.
