Hypoxia-induced transcription of dopamine D3 and D4 receptors in human neuroblastoma and astrocytoma cells

Melinda Bence, Eva Kereszturi, Viktor Mozes, M. Sasvári, Gergely Keszler

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Background: Dopaminergic pathways that influence mood and behaviour are severely affected in cerebral hypoxia. In contrast, hypoxia promotes the differentiation of dopaminergic neurons. In order to clarify the hypoxic sensitivity of key dopaminergic genes, we aimed to study their transcriptional regulation in the context of neuroblastoma and astrocytoma cell lines exposed to 1% hypoxia. Results: Quantitative RT-PCR assays revealed that the transcription of both type D3 and D4 postsynaptic dopamine receptors (DRD3 and DRD4) was induced several fold upon 2-day hypoxia in a cell-specific manner, while the vascular endothelial growth factor gene was activated after 3-hr incubation in hypoxia. On the other hand, mRNA levels of type 2 dopamine receptor, dopamine transporter, monoamino oxidase and catechol-O-methyltransferase were unaltered, while those of the dopamine receptor regulating factor (DRRF) were decreased by hypoxia. Notably, 2-day hypoxia did not result in elevation of protein levels of DRD3 and DRD4. Conclusion: In light of the relatively delayed transcriptional activation of the DRD3 and DRD4 genes, we propose that slow-reacting hypoxia sensitive transcription factors might be involved in the transactivation of DRD3 and DRD4 promoters in hypoxia.

Original languageEnglish
Article number92
JournalBMC Neuroscience
Volume10
DOIs
Publication statusPublished - Aug 4 2009

Fingerprint

Dopamine D4 Receptors
Dopamine D3 Receptors
Astrocytoma
Neuroblastoma
Dopamine Receptors
Transcriptional Activation
Genes
Catechol O-Methyltransferase
Brain Hypoxia
Dopamine Plasma Membrane Transport Proteins
Hypoxia
Dopaminergic Neurons
Vascular Endothelial Growth Factor A
Oxidoreductases
Transcription Factors
Cell Line
Polymerase Chain Reaction
Messenger RNA

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience
  • Neuroscience(all)

Cite this

Hypoxia-induced transcription of dopamine D3 and D4 receptors in human neuroblastoma and astrocytoma cells. / Bence, Melinda; Kereszturi, Eva; Mozes, Viktor; Sasvári, M.; Keszler, Gergely.

In: BMC Neuroscience, Vol. 10, 92, 04.08.2009.

Research output: Contribution to journalArticle

Bence, Melinda ; Kereszturi, Eva ; Mozes, Viktor ; Sasvári, M. ; Keszler, Gergely. / Hypoxia-induced transcription of dopamine D3 and D4 receptors in human neuroblastoma and astrocytoma cells. In: BMC Neuroscience. 2009 ; Vol. 10.
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