BDNF gene can be activated by Ca2+ signals without involvement of de novo AP-1 synthesis

Kuniaki Sano, Hikaru Nanba, Akiko Tabuchi, Tomofusa Tsuchiya, Masaaki Tsuda

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Although stimulation of N-methyl-D-aspartate receptors or voltage-dependent calcium channels induces both the activation of c-fos and brain-derived neurotrophic factor (BDNF) genes, it is not certain how the activation of these genes is related. Using primary cultures of rat hippocampal neurons, we found that exposing the cells to cycloheximide allowed subsequent activation of BDNF mRNA expression, although activation of AP-1 DNA-binding activity resulting from the c-fos induction was abolished. Super-induction of BDNF gene was also caused by cycloheximide. The estimated half-life of BDNF mRNA was approximately 2.5 hrs, which was almost identical to that of c-fos mRNA. These results indicate that nascent AP-1 is not required for the activation of BDNF gene, leading to the notion that the BDNF gene can be activated by Ca2+ signals as an immediate early gene.

Original languageEnglish
Pages (from-to)788-793
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume229
Issue number3
DOIs
Publication statusPublished - Dec 24 1996

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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