c-fos regulates neuropeptide Y expression in mouse dentate gyrus

Academic Article

Abstract

  • Excitotoxicity by which excitatory amino acid induces neuronal cell death may underlie mechanisms of neurodegenerative diseases. We previously found that c-fos is critically involved in neuronal excitability and survival. Mice that carry hippocampal mutations of c-fos exhibited hyper-excitability, hyper-excitotoxicity and higher mortality in kainic acid (KA)-induced seizures compared to wild-type mice. To further understand the neuroprotective signal transduction pathways regulated by c-fos in the hippocampal formation, we identified 172 genes that are either regulated by KA or are differentially expressed in wild-type and hippocampal-specific c-fos mutant mice using cDNA microarrays. One gene encodes the neuropeptide Y (NPY). We confirmed that c-fos regulates the expression of NPY by using immunohistochemistry. We found that c-fos is critical in up-regulation of NPY expression in the granule cell layer of dentate gyrus in response to KA administration. As NPY is an important endogenous anti-epileptic agent, our result is consistent with a hypothesis that the neuroprotective function of c-fos is mediated in part by regulation of NPY expression. © 2004 Elsevier Ireland Ltd. All rights reserved.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Wu Y; Zhang D; Lou D; Fan Y; Aronow B; Xu M; Zhang J
  • Start Page

  • 6
  • End Page

  • 10
  • Volume

  • 363
  • Issue

  • 1