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Identification of epilepsy-associated neuronal subtypes and gene expression underlying epileptogenesis

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  • Ulrich Pfisterer
  • Viktor Petukhov
  • Samuel Demharter
  • Johanna Meichsner
  • Jonatan J Thompson
  • Mykhailo Y Batiuk
  • Andrea Asenjo Martinez
  • Navneet A Vasistha
  • Ashish Thakur
  • Jens Mikkelsen
  • Istvan Adorjan
  • Lars H Pinborg
  • Tune H Pers
  • Jakob von Engelhardt
  • Peter V Kharchenko
  • Konstantin Khodosevich
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Epilepsy is one of the most common neurological disorders, yet its pathophysiology is poorly understood due to the high complexity of affected neuronal circuits. To identify dysfunctional neuronal subtypes underlying seizure activity in the human brain, we have performed single-nucleus transcriptomics analysis of >110,000 neuronal transcriptomes derived from temporal cortex samples of multiple temporal lobe epilepsy and non-epileptic subjects. We found that the largest transcriptomic changes occur in distinct neuronal subtypes from several families of principal neurons (L5-6_Fezf2 and L2-3_Cux2) and GABAergic interneurons (Sst and Pvalb), whereas other subtypes in the same families were less affected. Furthermore, the subtypes with the largest epilepsy-related transcriptomic changes may belong to the same circuit, since we observed coordinated transcriptomic shifts across these subtypes. Glutamate signaling exhibited one of the strongest dysregulations in epilepsy, highlighted by layer-wise transcriptional changes in multiple glutamate receptor genes and strong upregulation of genes coding for AMPA receptor auxiliary subunits. Overall, our data reveal a neuronal subtype-specific molecular phenotype of epilepsy.

Original languageEnglish
Article number5038
JournalNature Communications
Volume11
Issue number1
Pages (from-to)5038
ISSN2041-1723
DOIs
Publication statusPublished - 7 Oct 2020

ID: 61072945