Response of Djun and Dfos mRNA abundance to signal transduction pathways in cultured cells of Drosophila melanogaster

Xueliang Xia, Elliott S. Goldstein

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The mammalian proto-oncogenes c-jun and c-fos are situated at the end of multiple signal transduction pathways and activation of their products Jun and Fos, components of the transcription factor AP-1, are able to regulate gene transcription in response to extracellular stimuli. Djun and Dfos, the products of the Drosophila proto-oncongenes Djun and Dfos, are similar in size and sequence to their mammalian counterparts c-Jun and c-Fos and are related to their mammalian counterparts by their antigenic properties. However, very little is known about how they are regulated through signal transduction pathways. This paper has investigated the response of their mRNA abundance levels to three signal transduction pathways in Drosophila cultured cells. Various agonists and anagonists that stimulate and inhibit specific enzymes in the pathways have been tested. The results suggest that Djun and Dfos mRNA are continuously expressed and their abundance levels are transiently regulated by multiple signaling pathways, the peak response coming at 1-2 hours after perturbation. Dfos is more highly regulated than Djun which is only modulated. The receptor tyrosine kinase pathways positively regulate Dfos and Djun. The cAMP-mediated pathway positively regulates Dfos but negatively regulates Djun. The protein kinase C-activated pathway does not affect Djun whereas it negatively regulates Dfos.

Original languageEnglish (US)
Pages (from-to)147-157
Number of pages11
JournalMolecular Biology Reports
Volume26
Issue number3
DOIs
StatePublished - Aug 1999

Fingerprint

Signal transduction
Drosophila melanogaster
Cultured Cells
Signal Transduction
Cells
Messenger RNA
Drosophila
jun Genes
Transcription Factor AP-1
Receptor Protein-Tyrosine Kinases
Transcription
Protein Kinase C
Genes
Chemical activation
Enzymes

Keywords

  • AP-1
  • Drosophila
  • Fos
  • Jun
  • Transcription

ASJC Scopus subject areas

  • Genetics
  • Cell Biology
  • Biochemistry

Cite this

Response of Djun and Dfos mRNA abundance to signal transduction pathways in cultured cells of Drosophila melanogaster. / Xia, Xueliang; Goldstein, Elliott S.

In: Molecular Biology Reports, Vol. 26, No. 3, 08.1999, p. 147-157.

Research output: Contribution to journalArticle

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