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Multiomic analysis implicates nuclear hormone receptor signalling in clustering epilepsy.

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Protocadherin 19 (PCDH19) gene variants cause Clustering Epilepsy (CE). This study reveals Nuclear Hormone Receptor (NHR) pathway dysregulation, particularly Androgen Receptor (AR), offering new therapeutic targets for CE.

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Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Clustering Epilepsy (CE) is a neurological disorder linked to Protocadherin 19 (PCDH19) gene variants.
  • Emerging evidence suggests the Nuclear Hormone Receptor (NHR) pathway is implicated in CE pathogenesis.

Approach:

  • Epigenomic, transcriptomic, and proteomic analyses were conducted on CE models.
  • Investigated differential regulation of Androgen Receptor (AR) and its targets in CE patient fibroblasts.
  • Utilized cell culture assays to explore mechanisms of PCDH19 expression regulation.

Key Points:

  • Differential expression and regulation of Androgen Receptor (AR) and its targets were observed in CE patient fibroblasts.
  • Estrogen Receptor alpha (ERα) and FOXA1 were found to repress PCDH19 expression.
  • A direct protein-protein interaction between PCDH19 and AR was identified.

Conclusions:

  • These findings elucidate a novel mechanism involving NHR signaling in CE pathogenesis.
  • The identified interactions highlight potential therapeutic strategies targeting the NHR pathway for CE treatment.