Abstract |
Hypoxia-inducible factor 1 (HIF-1) is a master transcription factor of hypoxia-induced gene expression. Anesthetics and perioperative drugs have been reported to affect HIF-1 activity. However, the effect of barbiturates on HIF-1 activity has not been reported. In this study, we investigated the effect of thiopental and thiamylal on HIF-1 activity using the neuronal SH-SY5Y cells, the non-neuronal HEK293 cells, and the macrophage-differentiated THP-1 cells. Cells were exposed to 20% or 1% O(2) conditions with or without thiopental or thiamylal treatment. The cell lysate were subjected to Western blot analysis using anti-HIF-1alpha and -HIF-1beta antibodies. HIF-1-dependent gene expression was investigated by semi-quantitative real-time RT-PCR and luciferase assay. Hydroxylation of HIF-1alpha protein was evaluated by in vitro pulldown assay using recombinant protein. Both thiopental and thiamylal reversibly suppressed hypoxia-induced HIF-1 activation in the neuronal and the non-neuronal cells in a dose-dependent manner. Moreover, the barbiturates inhibited lipopolysaccharide-induced HIF-1alpha expression in THP-1 cells. The HIF-1-downstream gene expression was also inhibited by the barbiturates. HIFalpha- hydroxylases activity and HIF-1alpha stability were not affected but the HIF-1alpha protein neosynthesis was inhibited by the barbiturates. Our experimental results indicate that barbiturates inhibit induced HIF-1 activation and downstream genes expression.
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Authors | Takuhiko Wakamatsu, Tomoharu Tanaka, Seiko Oda, Kenichiro Nishi, Hiroshi Harada, Hiroki Daijo, Satoshi Takabuchi, Shinichi Kai, Kazuhiko Fukuda, Kiichi Hirota |
Journal | European journal of pharmacology
(Eur J Pharmacol)
Vol. 617
Issue 1-3
Pg. 17-22
(Sep 01 2009)
ISSN: 1879-0712 [Electronic] Netherlands |
PMID | 19595685
(Publication Type: Journal Article)
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Chemical References |
- ARNT protein, human
- Anesthetics
- Barbiturates
- HIF1A protein, human
- Hypoxia-Inducible Factor 1
- Hypoxia-Inducible Factor 1, alpha Subunit
- Aryl Hydrocarbon Receptor Nuclear Translocator
- Oxygen
- barbituric acid
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Topics |
- Anesthesia, Intravenous
- Anesthetics
(administration & dosage, pharmacology)
- Animals
- Aryl Hydrocarbon Receptor Nuclear Translocator
(biosynthesis, chemistry, genetics)
- Barbiturates
(administration & dosage, pharmacology)
- Cell Line
- Dose-Response Relationship, Drug
- Humans
- Hypoxia-Inducible Factor 1
(biosynthesis, chemistry, genetics)
- Hypoxia-Inducible Factor 1, alpha Subunit
(biosynthesis, chemistry, genetics)
- Neurons
(drug effects, metabolism)
- Oxygen
(metabolism)
- Protein Stability
(drug effects)
- Transcriptional Activation
(drug effects)
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