Vitamin D-metabolic enzymes and related molecules: Expression at the maternal-conceptus interface and the role of vitamin D in endometrial gene expression in pigs

Vitamin D is a secosteroid hormone with many varied functions including regulation of blood calcium levels, cell proliferation, immunity, and reproduction in mammals. Vitamin D is activated by 25-hydroxylase (CYP2R1) and 1-alpha-hydroxylase (CYP27B1) and is degraded by 24-hydroxylase (CYP24A1). Vita...

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Veröffentlicht in:PloS one 2017-10, Vol.12 (10), p.e0187221-e0187221
Hauptverfasser: Jang, Hwanhee, Choi, Yohan, Yoo, Inkyu, Han, Jisoo, Hong, Jin Su, Kim, Yoo Yong, Ka, Hakhyun
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Choi, Yohan
Yoo, Inkyu
Han, Jisoo
Hong, Jin Su
Kim, Yoo Yong
Ka, Hakhyun
description Vitamin D is a secosteroid hormone with many varied functions including regulation of blood calcium levels, cell proliferation, immunity, and reproduction in mammals. Vitamin D is activated by 25-hydroxylase (CYP2R1) and 1-alpha-hydroxylase (CYP27B1) and is degraded by 24-hydroxylase (CYP24A1). Vitamin D is transported by vitamin D-binding protein (group-specific component, GC) through the bloodstream and regulates cellular actions by binding to vitamin D receptor (VDR). In this study, we determined the expression and regulation of vitamin D-related molecules and the role of vitamin D at the maternal-conceptus interface in pigs. Vitamin D-metabolizing enzymes CYP2R1, CYP27B1, and CYP24A1, vitamin D binding protein GC, and vitamin D receptor VDR were expressed in the endometrium in a pregnancy stage-specific manner as well as in conceptus and chorioallantoic tissues during pregnancy. VDR protein was localized to endometrial and trophoblastic cells. Concentrations of calcitriol, the active form of vitamin D, in the endometrial tissues were higher during early pregnancy than in mid- to late pregnancy, while plasma concentrations of calcitriol were highest during late pregnancy. Furthermore, calcitriol affected the expression of several genes related to conceptus implantation, vitamin D metabolism, calcium ion regulation, PG metabolism, and calcium-binding proteins in endometrial tissue explants. These results show that CYP2R1, CYP27B1, CYP24A1, GC, and VDR were expressed at the maternal-conceptus interface, endometrial calcitriol levels were regulated during pregnancy, and calcitriol modulated the expression of endometrial genes, suggesting that calcitriol may play an important role in the establishment and maintenance of pregnancy by regulating endometrial function in pigs.
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Vitamin D is activated by 25-hydroxylase (CYP2R1) and 1-alpha-hydroxylase (CYP27B1) and is degraded by 24-hydroxylase (CYP24A1). Vitamin D is transported by vitamin D-binding protein (group-specific component, GC) through the bloodstream and regulates cellular actions by binding to vitamin D receptor (VDR). In this study, we determined the expression and regulation of vitamin D-related molecules and the role of vitamin D at the maternal-conceptus interface in pigs. Vitamin D-metabolizing enzymes CYP2R1, CYP27B1, and CYP24A1, vitamin D binding protein GC, and vitamin D receptor VDR were expressed in the endometrium in a pregnancy stage-specific manner as well as in conceptus and chorioallantoic tissues during pregnancy. VDR protein was localized to endometrial and trophoblastic cells. Concentrations of calcitriol, the active form of vitamin D, in the endometrial tissues were higher during early pregnancy than in mid- to late pregnancy, while plasma concentrations of calcitriol were highest during late pregnancy. Furthermore, calcitriol affected the expression of several genes related to conceptus implantation, vitamin D metabolism, calcium ion regulation, PG metabolism, and calcium-binding proteins in endometrial tissue explants. These results show that CYP2R1, CYP27B1, CYP24A1, GC, and VDR were expressed at the maternal-conceptus interface, endometrial calcitriol levels were regulated during pregnancy, and calcitriol modulated the expression of endometrial genes, suggesting that calcitriol may play an important role in the establishment and maintenance of pregnancy by regulating endometrial function in pigs.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>29088291</pmid><doi>10.1371/journal.pone.0187221</doi><tpages>e0187221</tpages><oa>free_for_read</oa></addata></record>
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subjects 25-Hydroxyvitamin D3 1-alpha-Hydroxylase - metabolism
Agricultural biotechnology
Animals
Biology and Life Sciences
Calcitriol
Calcium
Calcium (blood)
Calcium metabolism
Cell proliferation
Cholestanetriol 26-Monooxygenase - metabolism
Chorioallantoic Membrane - metabolism
Cytochrome P-450
Cytokines
Endometrium
Endometrium - metabolism
Endometrium - physiology
Enzymes
Explants
Female
Gene expression
Gene Expression Regulation - physiology
Genes
Guanylate cyclase
Hogs
Homeostasis
Hydroxylase
Immunity
Implantation
Medicine and Health Sciences
Metabolism
Physical sciences
Physiological aspects
Physiology
Pigs
Pregnancy
Protein binding
Proteins
Receptors, Calcitriol - metabolism
Rodents
Swine
Tissues
Vitamin D
Vitamin D - metabolism
Vitamin D - physiology
Vitamin D receptors
Vitamin D-binding protein
Vitamin D-Binding Protein - metabolism
Vitamin D3 24-Hydroxylase - metabolism
title Vitamin D-metabolic enzymes and related molecules: Expression at the maternal-conceptus interface and the role of vitamin D in endometrial gene expression in pigs
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