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Expression and function of the vitamin d receptor in malignant germ cell tumour of the testis.
MedLine Citation:
PMID:  22213325     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Testicular germ cell tumours (TGCTs) are the most common malignancy in young men aged 18-35 years. They are clinically and histologically subdivided into seminomas and non-seminomas. 1,25-Dihydroxyvitamin D (1,25(OH)(2)D(3)) is the active form of vitamin D and exerts its actions via a specific intracellular vitamin D receptor (VDR). Several investigations in the recent years have revealed, in addition to a physiological occurrence of the VDR in various tissues, VDR expression in different human malignancies. Furthermore, 1,25(OH)(2)D(3) plays an important role in the regulation of cell proliferation and differentiation. In different normal and malignant cell types, antiproliferative and pro-differentiating effects of 1,25(OH)(2)D(3) are described. We investigated whether TGCT express the VDR, wether differences exist between the histological subtypes and if vitamin D has a function on the proliferation of tumour cells. Furthermore, we investigated the potential function of the vitamin D-regulated genes nuclear receptor co-repressor 1(NCOR1), nuclear receptor co-repressor 2 (NCOR2), thyroid receptor interacting protein 15 (TRIP15), Growth Arrest and DNA Damage (GADD45), MAP kinase-activated protein kinase 2 (MAPKAPK2), Cytochrome P450, family 24, subfamily A, polypeptide 1 (CYP24A1) and Cytochrome P450, family 27, subfamily B, polypeptide 1 (CYP27B1) in the pathogenesis of TGCT. We demonstrate, for the first time, that primary TGCT as well as TGCT cell lines, express VDR mRNA and protein. Vitamin D and VDR may play a role in the pathogenesis of TGCTs. Furthermore, vitamin D inhibits proliferation of TGCT cell-lines, potentially via an increase in expression of GADD45. Our data suggest that vitamin D could play a role in antitumour therapy.
Authors:
F Bremmer; P Thelen; T Pottek; C L Behnes; H J Radzun; S Schweyer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Anticancer research     Volume:  32     ISSN:  1791-7530     ISO Abbreviation:  Anticancer Res.     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-01-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8102988     Medline TA:  Anticancer Res     Country:  Greece    
Other Details:
Languages:  eng     Pagination:  341-9     Citation Subset:  IM    
Affiliation:
Department of Pathology, University Medical Centre Göttingen, Robert Koch Str, 40, 37075 Göttingen, Germany. felix.bremmer@med.uni-goettingen.de.
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