Back to Search
Start Over
The glucocorticoid receptor is a co-regulator of the orphan nuclear receptor Nurr1
- Source :
- Journal of Neurochemistry. :071106220615011
- Publication Year :
- 2007
- Publisher :
- Wiley, 2007.
-
Abstract
- Nurr1 (NR4A2) is an atypical nuclear receptor (NR) because of its inability to bind a ligand and to activate transcription following canonical NR rules. An affinity chromatography-based screen identified the glucocorticoid receptor (GR) as an interactant of Nurr1. The co-localization of these two NRs in the hippocampus and the substantia nigra, as well as their involvement in similar neurological processes led us to investigate the functional consequences of such a physical interaction. GR interfered with Nurr1 transcriptional activity, and Nurr1 association to GR confers glucocorticoid regulation to this orphan receptor. The N-terminal domain of Nurr1 interacts directly with GR, whereas several domains of GR can associate to Nurr1. The GR-mediated increase in Nurr1 transcriptional activity requires the N-terminal domain of GR, but not a functional DNA binding domain. Finally, SMRT and SRC2, two co-regulators of GR, modulated the transcriptional activity of the Nurr1-GR complex, but not that of Nurr1 alone. Our results therefore establish GR as a transcriptional regulator of Nurr1, and open new opportunities in the pharmacological regulation of Nurr1 by glucocorticoids in the CNS.
- Subjects :
- Transcriptional Activation
Transcription, Genetic
Proto-Oncogene Proteins pp60(c-src)
Biology
Transfection
Hippocampus
PC12 Cells
Biochemistry
Rats, Sprague-Dawley
Cellular and Molecular Neuroscience
Receptors, Glucocorticoid
Glucocorticoid receptor
Nuclear Receptor Subfamily 4, Group A, Member 2
Transcriptional regulation
medicine
Animals
Nuclear Receptor Co-Repressor 2
Receptor
Adaptor Proteins, Signal Transducing
Nuclear receptor co-repressor 2
Orphan receptor
Binding Sites
DNA-binding domain
Protein Structure, Tertiary
Rats
Cell biology
DNA-Binding Proteins
Repressor Proteins
Substantia Nigra
Nuclear receptor
Cancer research
Glucocorticoid
Protein Binding
Transcription Factors
medicine.drug
Subjects
Details
- ISSN :
- 14714159 and 00223042
- Database :
- OpenAIRE
- Journal :
- Journal of Neurochemistry
- Accession number :
- edsair.doi.dedup.....a3a1a42c96e0a11476f92846cc9896b5