Profiling status epilepticus-induced changes in hippocampal RNA expression using high-throughput RNA sequencing

Katelin F. Hansen, Kensuke Sakamoto, Carl Pelz, Soren Impey, Karl Obrietan

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Status epilepticus (SE) is a life-threatening condition that can give rise to a number of neurological disorders, including learning deficits, depression, and epilepsy. Many of the effects of SE appear to be mediated by alterations in gene expression. To gain deeper insight into how SE affects the transcriptome, we employed the pilocarpine SE model in mice and Illumina-based high-throughput sequencing to characterize alterations in gene expression from the induction of SE, to the development of spontaneous seizure activity. While some genes were upregulated over the entire course of the pathological progression, each of the three sequenced time points (12-hour, 10-days and 6-weeks post-SE) had a largely unique transcriptional profile. Hence, genes that regulate synaptic physiology and transcription were most prominently altered at 12-hours post-SE; at 10-days post-SE, marked changes in metabolic and homeostatic gene expression were detected; at 6-weeks, substantial changes in the expression of cell excitability and morphogenesis genes were detected. At the level of cell signaling, KEGG analysis revealed dynamic changes within the MAPK pathways, as well as in CREB-associated gene expression. Notably, the inducible expression of several noncoding transcripts was also detected. These findings offer potential new insights into the cellular events that shape SE-evoked pathology.

Original languageEnglish (US)
Article number6930
JournalScientific Reports
Volume4
DOIs
StatePublished - 2014

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High-Throughput Nucleotide Sequencing
Status Epilepticus
RNA
Gene Expression
Genes
Pilocarpine
Nervous System Diseases
Morphogenesis
Transcriptome
Epilepsy
Seizures
Learning
Depression
Pathology

ASJC Scopus subject areas

  • General
  • Medicine(all)

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Profiling status epilepticus-induced changes in hippocampal RNA expression using high-throughput RNA sequencing. / Hansen, Katelin F.; Sakamoto, Kensuke; Pelz, Carl; Impey, Soren; Obrietan, Karl.

In: Scientific Reports, Vol. 4, 6930, 2014.

Research output: Contribution to journalArticle

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