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Mueller PR, Kershner AJ, Breitrick BI, Keller KN, Radtke RL, Patel RJ, Gierach K, Arvedson J, Moyle-Heyrman GE, Pearson DA. Vitamin D and docosahexaenoic acid inhibit proliferation of the ovarian cancer cell line OVCAR4. Nutr Health 2023:2601060231202565. [PMID: 37728210 DOI: 10.1177/02601060231202565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
BACKGROUND Ovarian cancer is one of the deadliest cancers in women. Improved preventative, diagnostic, and therapeutic strategies are needed. Certain dietary patterns and nutrients such as vitamin D and omega-3 fatty acids are associated with reduced cancer risk, but their effects on ovarian cancer remain to be fully elucidated, and their combined effects have not been explored. AIM To determine the individual and combined effects of the active vitamin D metabolite, calcitriol, and the omega-3 fatty acid, docosahexaenoic acid, on cell growth, and the abundance of the vitamin D receptor (VDR), proteins that modulate cell cycle progression, and apoptotic markers. METHODS OVCAR4 cells, a model of ovarian cancer, were treated with calcitriol, and docosahexaenoic acid, either alone or in combination. Effects on cell growth were determined by the sulforhodamine B assay. Changes in VDR, the cell cycle promotor c-Myc, the cell cycle inhibitor p27 and cleaved PARP, were determined by Western blotting. RESULTS While OVCAR4 cell growth was inhibited by individual treatment with either calcitriol or docosahexaenoic acid, the combined treatment revealed enhanced growth inhibition as compared to either treatment alone. Furthermore, long-term treatment (12 days) yielded stronger growth inhibition at lower concentrations as compared to short-term treatments (3 days). Accompanying this growth inhibition was a decrease in c-Myc, and an increase in p27. CONCLUSIONS The observed reduction in cell growth mediated by calcitriol and docosahexaenoic acid highlights the need for further research utilizing these nutrients, alone and especially in combination, to support ovarian cancer prevention and treatment.
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Affiliation(s)
- Paul R Mueller
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
- Department of Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Alexandra J Kershner
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Brooke I Breitrick
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Katharina N Keller
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Rebecca L Radtke
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Ruchita J Patel
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Kylie Gierach
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Jon Arvedson
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Georgette E Moyle-Heyrman
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
- Department of Chemistry, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
| | - Debra A Pearson
- Department of Human Biology, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
- Department of Chemistry, College of Science Engineering and Technology, University of Wisconsin - Green Bay, Wisconsin, USA
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Abstract
The ubiquity of vitamin D metabolising enzymes and vitamin D receptors in mammalian organisms suggests that vitamin D has pleiotropic effects. There are quite a few studies indicating the anticancer, cardioprotective and antidiabetic effects of vitamin D; however, the best-documented actions of vitamin D are the regulation of Ca-phosphate balance and its effect on immune function.Vitamin D levels in organisms are modulated by many environmental and non-environmental factors. One potential factor that may influence vitamin D levels and effects is the sex of the individuals studied. This review focuses on the scientific evidence indicating different synthesis and metabolism of vitamin D in females and males, mainly from PubMed database sources. The article verifies the sex differences in vitamin D levels reported around the world. Moreover, the different effects of vitamin D on the musculoskeletal, cardiovascular, nervous and immune systems, as well as cancer in males and females, were discussed.Most studies addressing sex differences in vitamin D levels and effects are observational studies with conflicting results. Therefore, carefully designed clinical trials and experiments on animal models should be carried out to determine the role of non-environmental factors that may differentiate vitamin D levels in females and males.
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Xu F, Wolf S, Green O, Xu J. Vitamin D in follicular development and oocyte maturation. Reproduction 2021; 161:R129-R137. [PMID: 33835047 DOI: 10.1530/rep-20-0608] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 04/08/2021] [Indexed: 12/16/2022]
Abstract
Vitamin D (VD) is a secosteroid hormone synthesized predominantly in the skin upon UV light exposure, which can also be obtained from dietary sources. In target cells, the bioactive VD binds to specific VD receptor to regulate downstream transcription of genes that are involved in a wide range of cellular processes. There is an increasing recognition that the proper physiological levels of VD are critical for optimizing reproductive potential in women. The direct VD action in the ovary was first suggested in the 1980s. Since then, research has attempted to determine the role of VD in follicular development and oocyte maturation in animal models and clinical settings. However, data published to date are inconclusive due to the complexity in VD metabolism and the fact that VD actions are pervasive in regulating physiological functions in various systems, including the reproductive, endocrine and nervous systems that control reproduction. This review summaries in vitro, in vivo, and clinical evidence regarding VD metabolism and signaling in the ovary, as well as VD-regulated or VD-associated ovarian follicular development, steroidogenic function, and oocyte maturation. It is suggested that adequate animal models are needed for well-controlled studies to unravel molecular mechanisms of VD action in the ovary. For clinical studies, follicular development and function may be evaluated more effectively in a relatively homogeneous patient population under a well-controlled experimental design. A comprehensive understanding of VD-regulated folliculogenesis and oogenesis will provide critical insight into the impact of VD in female reproductive health.
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Affiliation(s)
- Fuhua Xu
- Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, School of Medicine, Oregon Health & Science University, Portland, Oregon, USA
| | - Shally Wolf
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
| | - O'ryai Green
- Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, School of Medicine, Oregon Health & Science University, Portland, Oregon, USA.,Department of Biology, Portland State University, Portland, Oregon, USA
| | - Jing Xu
- Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, School of Medicine, Oregon Health & Science University, Portland, Oregon, USA.,Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, Oregon, USA
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Brożyna AA, Kim TK, Zabłocka M, Jóźwicki W, Yue J, Tuckey RC, Jetten AM, Slominski AT. Association among Vitamin D, Retinoic Acid-Related Orphan Receptors, and Vitamin D Hydroxyderivatives in Ovarian Cancer. Nutrients 2020; 12:E3541. [PMID: 33227893 PMCID: PMC7699234 DOI: 10.3390/nu12113541] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/08/2020] [Accepted: 11/12/2020] [Indexed: 12/12/2022] Open
Abstract
Vitamin D and its derivatives, acting via the vitamin D receptor (VDR) and retinoic acid-related orphan receptors γ and α (RORγ and RORα), show anticancer properties. Since pathological conditions are characterized by disturbances in the expression of these receptors, in this study, we investigated their expression in ovarian cancers (OCs), as well as explored the phenotypic effects of vitamin D hydroxyderivatives and RORγ/α agonists on OC cells. The VDR and RORγ showed both a nuclear and a cytoplasmic location, and their expression levels were found to be reduced in the primary and metastatic OCs in comparison to normal ovarian epithelium, as well as correlated to the tumor grade. This reduction in VDR and RORγ expression correlated with a shorter overall disease-free survival. VDR, RORγ, and RORα were also detected in SKOV-3 and OVCAR-3 cell lines with increased expression in the latter line. 20-Hydroxy-lumisterol3 (20(OH)L3) and synthetic RORα/RORγ agonist SR1078 inhibited proliferation only in the OVCAR-3 line, while 20-hydroxyvitamin-D3 (20(OH)D3) only inhibited SKOV-3 cell proliferation. 1,25(OH)2D3, 20(OH)L3, and SR1078, but not 20(OH)D3, inhibited spheroid formation in SKOV-3 cells. In summary, decreases in VDR, RORγ, and RORα expression correlated with an unfavorable outcome for OC, and compounds targeting these receptors had a context-dependent anti-tumor activity in vitro. We conclude that VDR and RORγ expression can be used in the diagnosis and prognosis of OC and suggest their ligands as potential candidates for OC therapy.
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Affiliation(s)
- Anna A. Brożyna
- Department of Human Biology, Institute of Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland
| | - Tae-Kang Kim
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA;
| | - Marzena Zabłocka
- Department of Tumor Pathology and Pathomorphology, Oncology Centre—Prof. Franciszek Łukaszczyk Memorial Hospital in Bydgoszcz, 85-796 Bydgoszcz, Poland;
| | - Wojciech Jóźwicki
- Department of Tumor Pathology and Pathomorphology, Department of Oncology, Faculty of Health Sciences, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland;
| | - Junming Yue
- Department of Pathology, University of Tennessee Health Science Center, Memphis, TN 38163, USA;
| | - Robert C. Tuckey
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia;
| | - Anton M. Jetten
- Cell Biology Section, Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA;
| | - Andrzej T. Slominski
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA;
- Laboratory Service of the VA Medical Center, Birmingham, AL 35294, USA
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