Title |
Identification of the molecular switch that regulates access of 5α-DHT to the androgen receptor
|
---|---|
Published in |
Molecular & Cellular Endocrinology, January 2007
|
DOI | 10.1016/j.mce.2006.12.007 |
Pubmed ID | |
Authors |
Trevor M. Penning, David R. Bauman, Yi Jin, Tea Lanisik Rizner |
Abstract |
Pairs of hydroxysteroid dehydrogenases (HSDs) govern ligand access to steroid receptors in target tissues and act as molecular switches. By acting as reductases or oxidases, HSDs convert potent ligands into their cognate inactive metabolites or vice versa. This pre-receptor regulation of steroid hormone action may have profound effects on hormonal response. We have identified the HSDs responsible for regulating ligand access to the androgen receptor (AR) in human prostate. Type 3 3alpha-hydroxysteroid dehydrogenase (aldo-keto reductase 1C2) acts solely as a reductase to convert 5alpha-dihydrotestosterone (DHT), a potent ligand for the AR (K(d)=10(-11)M for the AR), to the inactive androgen 3alpha-androstanediol (K(d)=10(-6)M for the AR); while RoDH like 3alpha-HSD (a short-chain dehydrogenase/reductase (SDR)) acts solely as an oxidase to convert 3alpha-androstanediol back to 5alpha-DHT. Our studies suggest that aldo-keto reductase (AKRs) and SDRs function as reductases and oxidases, respectively, to control ligand access to nuclear receptors. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 24 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Master | 7 | 29% |
Researcher | 4 | 17% |
Student > Doctoral Student | 3 | 13% |
Student > Ph. D. Student | 2 | 8% |
Student > Postgraduate | 2 | 8% |
Other | 3 | 13% |
Unknown | 3 | 13% |
Readers by discipline | Count | As % |
---|---|---|
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Biochemistry, Genetics and Molecular Biology | 3 | 13% |
Computer Science | 2 | 8% |
Pharmacology, Toxicology and Pharmaceutical Science | 1 | 4% |
Unspecified | 1 | 4% |
Other | 2 | 8% |
Unknown | 6 | 25% |