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Feed-forward inhibition of androgen receptor activity by glucocorticoid action in human adipocytes.
- Source :
-
Chemistry & biology [Chem Biol] 2012 Sep 21; Vol. 19 (9), pp. 1126-41. - Publication Year :
- 2012
-
Abstract
- We compared transcriptomes of terminally differentiated mouse 3T3-L1 and human adipocytes to identify cell-specific differences. Gene expression and high content analysis (HCA) data identified the androgen receptor (AR) as both expressed and functional, exclusively during early human adipocyte differentiation. The AR agonist dihydrotestosterone (DHT) inhibited human adipocyte maturation by downregulation of adipocyte marker genes, but not in 3T3-L1. It is interesting that AR induction corresponded with dexamethasone activation of the glucocorticoid receptor (GR); however, when exposed to the differentiation cocktail required for adipocyte maturation, AR adopted an antagonist conformation and was transcriptionally repressed. To further explore effectors within the cocktail, we applied an image-based support vector machine (SVM) classification scheme to show that adipocyte differentiation components inhibit AR action. The results demonstrate human adipocyte differentiation, via GR activation, upregulates AR but also inhibits AR transcriptional activity.<br /> (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Subjects :
- 3T3-L1 Cells
Adipocytes cytology
Androgen Receptor Antagonists metabolism
Animals
Cell Differentiation drug effects
Cells, Cultured
Dihydrotestosterone pharmacology
Glucocorticoids metabolism
Humans
Mice
Receptors, Glucocorticoid metabolism
Structure-Activity Relationship
Support Vector Machine
Transcription, Genetic drug effects
Adipocytes drug effects
Adipocytes metabolism
Androgen Receptor Antagonists pharmacology
Glucocorticoids pharmacology
Receptors, Androgen metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1301
- Volume :
- 19
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Chemistry & biology
- Publication Type :
- Academic Journal
- Accession number :
- 22999881
- Full Text :
- https://doi.org/10.1016/j.chembiol.2012.07.020