title: 25-Hydroxyvitamin D3 1alpha-hydroxylase splice variants in benign and malignant ovarian cell lines and tissue.
abstract: Calcitriol is judged to have a positive effect on control of the immune system, cell growth and differentiation and therefore, the prevention of cancer genesis. The aim of this study was to detect any possible differences in the 25-hydroxyvitamin D-1alpha-hydroxylase (1alphaOHase)-expression between benign and malignant ovarian tissue and cell lines. The analysis was conducted quantitatively, by means of nested "touchdown" PCR and Western blot, and qualitatively, with the use of real-time PCR and Western blot. The gene structure was sequenced. Compared to the benign cell line, the malignant cell lines showed a significantly higher expression of 1alphaOHase at the RNA level. A statistically lower expression of the 1alphaOHase protein was found in the malignant tissue. In the malignant cell lines and tissues, divergent bands were detected, which led to various splice variants on sequencing. Their increased expression in malignancy is possibly bound to the reduction of enzyme activity, which may lead to the genesis of ovarian cancer. In the future, preventive and therapeutic activities may result from these findings.
authors: KIinik für Frauenheilkunde und Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, D-23562 Lübeck, Germany. dorothea.fischer@uk-sh.de
authors: Dorothea
authors: D
authors: Fischer
authors: Marlene
authors: M
authors: Thomé
authors: Steffi
authors: S
authors: Becker
authors: Tim
authors: T
authors: Cordes
authors: Klaus
authors: K
authors: Diedrich
authors: Michael
authors: M
authors: Friedrich
authors: Marc
authors: M
authors: Thill
mesh_terms: D015090:25-Hydroxyvitamin D3 1-alpha-Hydroxylase / Q000235:genetics / Q000378:metabolism*; D001483:Base Sequence; D017931:DNA Primers; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D010051:Ovarian Neoplasms / Q000201:enzymology* / Q000473:pathology; D010053:Ovary / Q000166:cytology / Q000201:enzymology*; D016133:Polymerase Chain Reaction; D012326:RNA Splicing; D012333:RNA, Messenger / Q000235:genetics
chemical_list: D017931:DNA Primers; D012333:RNA, Messenger; D015090:25-Hydroxyvitamin D3 1-alpha-Hydroxylase