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Differential DNA Methylation Patterns in Patients with Epilepsy due to Malformations of Cortical Development: A Pilot

Kuntal Sen1, Rupali Gadkari2, Rajkumar Agarwal2

  • 1Division of Neurogenetics and Developmental Pediatrics, Children's National Hospital, Washington, DC, USA.

Neurology India
|December 21, 2019
PubMed
Abstract

Insights

Epigenetic changes in brain tissue may contribute to refractory epilepsy caused by malformations of cortical development (MCDs). DNA methylation analysis revealed altered pathways in MCD patients, suggesting a role for epigenetics in disease development.

Area of Science:

  • Neuroscience
  • Epigenetics
  • Developmental Neuroscience

Background:

  • Refractory epilepsy can stem from malformations of cortical development (MCDs).
  • Understanding the molecular underpinnings of MCDs is crucial for developing targeted therapies.
  • Epigenetic modifications, such as DNA methylation, are increasingly recognized for their role in neurological disorders.

Purpose of the Study:

  • To investigate DNA methylation profiles in the brain tissue of patients with refractory epilepsy linked to MCDs.
  • To identify specific epigenetic alterations associated with MCDs.
  • To explore the potential role of epigenetic pathways in the pathogenesis of MCDs.

Main Methods:

  • Analysis of clinical, neuroimaging, and pathology data from 13 epilepsy patients undergoing resective surgery.
  • DNA methylation profiling using the Illumina® 450k Methylation Microarray.
  • Bioinformatic analysis and pathway identification utilizing R/Bioconductor packages.

Main Results:

  • Differential DNA methylation was observed in genes related to the Ephrin-Reelin pathway.
  • Alterations in methylation were found in genes involved in potassium channels and glutathione metabolism.
  • These methylation changes were specific to the malformations of cortical development (MCD) group compared to controls.

Conclusions:

  • Preliminary findings suggest that epigenetic pathways, specifically DNA methylation, may play a significant role in the pathobiogenesis of MCDs.
  • These results open avenues for further research into epigenetic mechanisms underlying cortical development disorders.
  • Epigenetic dysregulation could represent a novel therapeutic target for refractory epilepsy associated with MCDs.
Keywords:
DNA methylationmalformations of cortical developmentneurogeneticsrefractory epilepsy

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