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Open Access Green as soon as Postprint is submitted to ZB.
Discovery of a novel enzyme mediating glucocorticoid catabolism in fish: 20beta-hydroxysteroid dehydrogenase type 2.
Mol. Cell. Endocrinol. 349, 202-213 (2012)
Hydroxysteroid dehydrogenases (HSDs) are involved in metabolism and pre-receptor regulation of steroid hormones. While 17beta-HSDs and 11beta-HSDs are extensively studied in mammals, only few orthologs are characterized in fish. We discovered a novel zebrafish HSD candidate closely related to 17beta-HSD types 3 and 12, which has orthologs in other species. The enzyme catalyzes the conversion of cortisone to 20beta-hydroxycortisone identified by LC-MS/MS. We named the new enzyme 20beta-HSD type 2. All 20beta-HSD type 2 orthologs localize in the endoplasmic reticulum. Zebrafish 20beta-HSD type 2 is expressed during embryonic development showing the same expression pattern as 11beta-HSD type 2 known to oxidize cortisol to cortisone. In adult tissues 20beta-HSD type 2 shows a ubiquitous expression pattern with some minor sex-specific differences. In contrast to other enzymes metabolizing C21-steroids and being mostly involved in reproduction we propose that novel type 2 20beta-HSDs in teleost fish are important enzymes in cortisol catabolism.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Cortisol; 20beta-HSD; Zebrafish; Metabolism; Stress
ISSN (print) / ISBN
0303-7207
e-ISSN
1872-8057
Quellenangaben
Volume: 349,
Issue: 2,
Pages: 202-213
Publisher
Elsevier
Publishing Place
Shannon
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Molekulare Endokrinologie und Metabolismus (MEM)
Institute of Experimental Genetics (IEG)
Institute of Experimental Genetics (IEG)