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Olszewska AM, Zmijewski MA. Genomic and non-genomic action of vitamin D on ion channels - Targeting mitochondria. Mitochondrion 2024; 77:101891. [PMID: 38692383 DOI: 10.1016/j.mito.2024.101891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/26/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
Recent studies revealed that mitochondria are not only a place of vitamin D3 metabolism but also direct or indirect targets of its activities. This review summarizes current knowledge on the regulation of ion channels from plasma and mitochondrial membranes by the active form of vitamin D3 (1,25(OH)2D3). 1,25(OH)2D3, is a naturally occurring hormone with pleiotropic activities; implicated in the modulation of cell differentiation, and proliferation and in the prevention of various diseases, including cancer. Many experimental data indicate that 1,25(OH)2D3 deficiency induces ionic remodeling and 1,25(OH)2D3 regulates the activity of multiple ion channels. There are two main theories on how 1,25(OH)2D3 can modify the function of ion channels. First, describes the involvement of genomic pathways of response to 1,25(OH)2D3 in the regulation of the expression of the genes encoding channels, their auxiliary subunits, or additional regulators. Interestingly, intracellular ion channels, like mitochondrial, are encoded by the same genes as plasma membrane channels. Therefore, the comprehensive genomic regulation of the channels from these two different cellular compartments we analyzed using a bioinformatic approach. The second theory explores non-genomic pathways of vitamin D3 activities. It was shown, that 1,25(OH)2D3 indirectly regulates enzymes that impact ion channels, change membrane physical properties, or directly bind to channel proteins. In this article, the involvement of genomic and non-genomic pathways regulated by 1,25(OH)2D3 in the modulation of the levels and activity of plasma membrane and mitochondrial ion channels was investigated by an extensive review of the literature and analysis of the transcriptomic data using bioinformatics.
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Affiliation(s)
- A M Olszewska
- Department of Histology, Medical University of Gdansk, 1a Debinki, 80-211 Gdansk, Poland
| | - M A Zmijewski
- Department of Histology, Medical University of Gdansk, 1a Debinki, 80-211 Gdansk, Poland.
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2
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Yahyavi SK, Boisen IM, Cui Z, Jorsal MJ, Kooij I, Holt R, Juul A, Blomberg Jensen M. Calcium and vitamin D homoeostasis in male fertility. Proc Nutr Soc 2024; 83:95-108. [PMID: 38072394 DOI: 10.1017/s002966512300486x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Calcium and vitamin D have well-established roles in maintaining calcium balance and bone health. Decades of research in human subjects and animals have revealed that calcium and vitamin D also have effects on many other organs including male reproductive organs. The presence of calcium-sensing receptor, vitamin D receptor, vitamin D activating and inactivating enzymes and calcium channels in the testes, male reproductive tract and human spermatozoa suggests that vitamin D and calcium may modify male reproductive function. Functional animal models have shown that vitamin D deficiency in male rodents leads to a decrease in successful mating and fewer pregnancies, often caused by impaired sperm motility and poor sperm morphology. Human studies have to a lesser extent validated these findings; however, newer studies suggest a positive effect of vitamin D supplementation on semen quality in cases with vitamin D deficiency, which highlights the need for initiatives to prevent vitamin D deficiency. Calcium channels in male reproductive organs and spermatozoa contribute to the regulation of sperm motility and capacitation, both essential for successful fertilisation, which supports a need to avoid calcium deficiency. Studies have demonstrated that vitamin D, as a regulator of calcium homoeostasis, influences calcium influx in the testis and spermatozoa. Emerging evidence suggests a potential link between vitamin D deficiency and male infertility, although further investigation is needed to establish a definitive causal relationship. Understanding the interplay between vitamin D, calcium and male reproductive health may open new avenues for improving fertility outcomes in men.
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Affiliation(s)
- Sam Kafai Yahyavi
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Ida Marie Boisen
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Zhihui Cui
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Mads Joon Jorsal
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Ireen Kooij
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Rune Holt
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Anders Juul
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Martin Blomberg Jensen
- Division of Translational Endocrinology, Department of Endocrinology and Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
- Group of Skeletal, Mineral, and Gonadal Endocrinology, Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
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Di Molfetta IV, Bordoni L, Gabbianelli R, Sagratini G, Alessandroni L. Vitamin D and Its Role on the Fatigue Mitigation: A Narrative Review. Nutrients 2024; 16:221. [PMID: 38257114 PMCID: PMC10818509 DOI: 10.3390/nu16020221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Vitamin D has historically been associated with bone metabolism. However, over the years, a growing body of evidence has emerged indicating its involvement in various physiological processes that may influence the onset of numerous pathologies (cardiovascular and neurodegenerative diseases, rheumatological diseases, fertility, cancer, diabetes, or a condition of fatigue). This narrative review investigates the current knowledge of the pathophysiological mechanisms underlying fatigue and the ways in which vitamin D is implicated in these processes. Scientific studies in the databases of PubMed, Scopus, and Web of Science were reviewed with a focus on factors that play a role in the genesis of fatigue, where the influence of vitamin D has been clearly demonstrated. The pathogenic factors of fatigue influenced by vitamin D are related to biochemical factors connected to oxidative stress and inflammatory cytokines. A role in the control of the neurotransmitters dopamine and serotonin has also been demonstrated: an imbalance in the relationship between these two neurotransmitters is linked to the genesis of fatigue. Furthermore, vitamin D is implicated in the control of voltage-gated calcium and chloride channels. Although it has been demonstrated that hypovitaminosis D is associated with numerous pathological conditions, current data on the outcomes of correcting hypovitaminosis D are conflicting. This suggests that, despite the significant involvement of vitamin D in regulating mechanisms governing fatigue, other factors could also play a role.
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Affiliation(s)
- Ippolita Valentina Di Molfetta
- Chemistry Interdisciplinary Project, School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (I.V.D.M.); (L.A.)
| | - Laura Bordoni
- Unit of Molecular Biology and Nutrigenomics, School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy; (L.B.); (R.G.)
| | - Rosita Gabbianelli
- Unit of Molecular Biology and Nutrigenomics, School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy; (L.B.); (R.G.)
| | - Gianni Sagratini
- Chemistry Interdisciplinary Project, School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (I.V.D.M.); (L.A.)
| | - Laura Alessandroni
- Chemistry Interdisciplinary Project, School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (I.V.D.M.); (L.A.)
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4
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Máčová L, Kancheva R, Bičíková M. Molecular Regulation of the CNS by Vitamin D. Physiol Res 2023; 72:S339-S356. [PMID: 38116771 DOI: 10.33549/physiolres.935248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
Vitamin D is a lipid-soluble vitamin that can be found in some foods. It is also produced endogenously (in the presence of ultraviolet light), transported through the blood to the targets organs and this is the reason to consider vitamin D as a hormone. It is known that vitamin D has genomic and non-genomic effects. This review is focused mainly on the vitamin D receptors, the importance of vitamin D as a neuromodulator, the role of vitamin D in the pathophysiology of devastating neurological disorders such as Alzheimer's disease, multiple sclerosis, amyotrophic lateral sclerosis, Parkinson's disease and the benefit of vitamin D and its derivates in alleviating these disorders.
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Affiliation(s)
- L Máčová
- Department of Steroids and Proteofactors, Institute of Endocrinology, Prague, Czech Republic
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Tahir H, Munir N, Iqbal SS, Bacha U, Amir S, Umar H, Riaz M, Tahir IM, Ali Shah SM, Shafiq A, Akram M. Maternal vitamin D status and attention deficit hyperactivity disorder (ADHD), an under diagnosed risk factor; A review. EUR J INFLAMM 2023. [DOI: 10.1177/1721727x231161013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
Vitamin D is important to mediate several brain processes such as proliferation, apoptosis, and neurotransmission in early stages of life. Vitamin D deficiency during critical periods of development can lead to persistent brain alterations. Vitamin D homeostasis during pregnancy is affected by two factors which includes an increase in mother’s calcitriol levels and an increase in mother’s Vitamin D Binding protein concentrations. Attention deficient hyperactivity disorder (ADHD) is an outcome of a complicated interaction between genetic, environmental, and developmental traits, and genetic factors cover about 80% of the cases. The efficiency of the immune system can be altered by a deficiency of Vitamin D in maternal body and maternal stress during gestation such as perinatal depression. Studies have proved that during gestation if there is a deficiency of vitamin D in maternal body, it can influence the brain development of the fetus and can also alter the synthesis of the brain-derived neurotropic factor. The current manuscript has been compiled to elaborate different factors which are associated with ADHD particularly focusing on the relationship of vitamin D deficiency in mothers. References material was selected from NCBI (PUBMED), Science direct, Google scholar, Publons etc. Using the terms ADHD, Vitamin D and Maternal nutritional status. Although, controversial relationship was found between the deficiency of Vitamin D level in pregnant women and development of ADHD in children but more controlled trials are required for future direction as well as to rule out other associated causes.
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Affiliation(s)
- Hafsa Tahir
- Department of Nutrition Sciences, School of Health Sciences, University of Management and Technology, Lahore, Pakistan
| | - Naveed Munir
- Department of Biomedical Lab Sciences, School of Health Sciences, University of Management and Technology, Lahore, Pakistan
| | - Syeda Saira Iqbal
- Knowledge Research and Support Services, University of Management and Technology, Lahore, Pakistan
| | - Umar Bacha
- Department of Nutrition Sciences, School of Health Sciences, University of Management and Technology, Lahore, Pakistan
| | - Saira Amir
- Department of Nutrition Sciences, School of Health Sciences, University of Management and Technology, Lahore, Pakistan
| | - Hassaan Umar
- School of Pharmaceutical Sciences, Universiti Sains, Malaysia
| | - Muhammad Riaz
- Department of Allied Health Sciences, Sargodha Medical College, University of Sargodha, Sargodha, Pakistan
| | - Imtiaz Mahmood Tahir
- College of Allied Health Professional, Directorate of Medical Sciences, Government College University‐Faisalabad, Faisalabad, Pakistan
| | - Syed Muhammad Ali Shah
- Department of Eastern Medicine, Government College University Faisalabad, Faisalabad, Pakistan
| | - Almina Shafiq
- Department of Biomedical Lab Sciences, School of Health Sciences, University of Management and Technology, Lahore, Pakistan
| | - Muhammad Akram
- Department of Eastern Medicine, Government College University Faisalabad, Faisalabad, Pakistan
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Rihal V, Khan H, Kaur A, Singh TG, Abdel-Daim MM. Therapeutic and mechanistic intervention of vitamin D in neuropsychiatric disorders. Psychiatry Res 2022; 317:114782. [PMID: 36049434 DOI: 10.1016/j.psychres.2022.114782] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/19/2022]
Abstract
Vitamin D deficiency is believed to affect between 35 and 55% of the world's population, making it a hidden pandemic. In addition to its role in bone and calcium homeostasis, vitamin D has also been linked in preclinical and clinical research to brain function. These outcomes have also been used for a variety of neuropsychiatric and neurodevelopmental problems. Nevertheless, these individuals are more prone to develop signs of cognitive decline. This review will emphasize the association between vitamin D and neuropsychiatric illnesses such as autism, schizophrenia, depression, and Attention Deficit Hyperactivity Disorder (ADHD). While numerous research show vitamin D's essential role in cognitive function in neuropsychiatric illnesses, it is too early to propose its effect on cognitive symptoms with certainty. It is necessary to conduct additional research into the associations between vitamin D deficiency and cognitive abnormalities, particularly those found in autism, schizophrenia, depression, and ADHD, to develop initiatives that address the pressing need for novel and effective preventative therapeutic strategies.
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Affiliation(s)
- Vivek Rihal
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Heena Khan
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Amarjot Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | | | - Mohamed M Abdel-Daim
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231 Jeddah 21442, Saudi Arabia; Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
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7
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Ohlrogge AH, Brederecke J, Ojeda FM, Pecha S, Börschel CS, Conradi L, Rimkus V, Blankenberg S, Zeller T, Schnabel RB. The Relationship Between Vitamin D and Postoperative Atrial Fibrillation: A Prospective Cohort Study. Front Nutr 2022; 9:851005. [PMID: 35619954 PMCID: PMC9127673 DOI: 10.3389/fnut.2022.851005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 04/05/2022] [Indexed: 11/26/2022] Open
Abstract
Background and Aims The relationship between postoperative atrial fibrillation (POAF) and 25-hydroxyvitamin D [25(OH)D] concentration as well as vitamin D supplementation has been discussed controversially. The relation of pre-operative vitamin D status and POAF remains unclear. Methods and Results We analysed the risk of POAF in a prospective, observational cohort study of n = 201 patients undergoing coronary artery bypass graft surgery (CABG) with 25(OH)D concentration. The median age was 66.6 years, 15.4% were women. The median (25th/75th percentile) vitamin D concentration at baseline was 17.7 (12.6/23.7) ng/ml. During follow-up we observed 48 cases of POAF. In age, sex, and creatinine-adjusted analyses, 25(OH)D was associated with an increased risk of POAF, though with borderline statistical significance [odds ratio (OR) 1.85, 95% confidence interval (CI) 0.87–3.92, p-value 0.107], in further risk factor-adjusted analyses the results remained stable (OR 1.99, 95% CI 0.90–4.39, p-value 0.087). The subgroup with vitamin D supplementation at baseline showed an increased risk of POAF (OR 5.03, 95% CI 1.13–22.33, p-value 0.034). Conclusion In our contemporary mid-European cohort, higher 25(OH)D concentration did not show a benefit for POAF in CABG patients and may even be harmful, though with borderline statistical significance. Our data are in line with a recent randomised study in community-based adults and call for further research to determine both, the clinical impact of elevated 25(OH)D concentration and vitamin D supplementation as well as the possible underlying pathophysiological mechanisms.
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Affiliation(s)
- Amelie H Ohlrogge
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Jan Brederecke
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Francisco M Ojeda
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Simon Pecha
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany.,Department of Cardiovascular Surgery, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Christin S Börschel
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Lenard Conradi
- Department of Cardiovascular Surgery, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Vanessa Rimkus
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Stefan Blankenberg
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Tanja Zeller
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany.,University Centre of Cardiovascular Science, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Renate B Schnabel
- Department of Cardiology, University Heart and Vascular Center Hamburg, Hamburg, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
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Issa NT, Wathieu H, Glasgow E, Peran I, Parasido E, Li T, Simbulan-Rosenthal CM, Rosenthal D, Medvedev AV, Makarov SS, Albanese C, Byers SW, Dakshanamurthy S. A novel chemo-phenotypic method identifies mixtures of salpn, vitamin D3, and pesticides involved in the development of colorectal and pancreatic cancer. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 233:113330. [PMID: 35189517 PMCID: PMC10202418 DOI: 10.1016/j.ecoenv.2022.113330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 02/01/2022] [Accepted: 02/16/2022] [Indexed: 05/24/2023]
Abstract
Environmental chemical (EC) exposures and our interactions with them has significantly increased in the recent decades. Toxicity associated biological characterization of these chemicals is challenging and inefficient, even with available high-throughput technologies. In this report, we describe a novel computational method for characterizing toxicity, associated biological perturbations and disease outcome, called the Chemo-Phenotypic Based Toxicity Measurement (CPTM). CPTM is used to quantify the EC "toxicity score" (Zts), which serves as a holistic metric of potential toxicity and disease outcome. CPTM quantitative toxicity is the measure of chemical features, biological phenotypic effects, and toxicokinetic properties of the ECs. For proof-of-concept, we subject ECs obtained from the Environmental Protection Agency's (EPA) database to the CPTM. We validated the CPTM toxicity predictions by correlating 'Zts' scores with known toxicity effects. We also confirmed the CPTM predictions with in-vitro, and in-vivo experiments. In in-vitro and zebrafish models, we showed that, mixtures of the motor oil and food additive 'Salpn' with endogenous nuclear receptor ligands such as Vitamin D3, dysregulated the nuclear receptors and key transcription pathways involved in Colorectal Cancer. Further, in a human patient derived cell organoid model, we found that a mixture of the widely used pesticides 'Tetramethrin' and 'Fenpropathrin' significantly impacts the population of patient derived pancreatic cancer cells and 3D organoid models to support rapid PDAC disease progression. The CPTM method is, to our knowledge, the first comprehensive toxico-physicochemical, and phenotypic bionetwork-based platform for efficient high-throughput screening of environmental chemical toxicity, mechanisms of action, and connection to disease outcomes.
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Affiliation(s)
- Naiem T Issa
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Henri Wathieu
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Eric Glasgow
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Ivana Peran
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Erika Parasido
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Tianqi Li
- Department of Biochemistry and Molecular Biology, Georgetown University, Washington, DC 20057, USA
| | | | - Dean Rosenthal
- Department of Biochemistry and Molecular Biology, Georgetown University, Washington, DC 20057, USA
| | | | | | - Christopher Albanese
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Stephen W Byers
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Biochemistry and Molecular Biology, Georgetown University, Washington, DC 20057, USA
| | - Sivanesan Dakshanamurthy
- Department of Oncology, and Molecular and Experimental Therapeutic Research in Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Biochemistry and Molecular Biology, Georgetown University, Washington, DC 20057, USA.
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9
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Ponce J, Ulu A, Hanson C, Cameron-Smith E, Bertoni J, Wuebker J, Fisher A, Siu KC, Marmelat V, Adamec J, Bhatti D. Role of Specialized Pro-resolving Mediators in Reducing Neuroinflammation in Neurodegenerative Disorders. Front Aging Neurosci 2022; 14:780811. [PMID: 35250536 PMCID: PMC8891627 DOI: 10.3389/fnagi.2022.780811] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 01/21/2022] [Indexed: 12/30/2022] Open
Abstract
Alzheimer’s disease (AD) and Parkinson’s disease (PD) are neurodegenerative disorders that affect millions of individuals worldwide. As incidence of these conditions increases with age, there will undoubtedly be an increased prevalence of cases in the near future. Neuroinflammation is a hallmark in the development and progression of neurodegenerative diseases and prevention or resolution of chronic neuroinflammation may represent a novel approach to treatment. The present review highlights the potential of the anti-inflammatory and pro-resolving effects of polyunsaturated fatty acid (PUFA)-derived mediators (Specialized Pro-resolving Mediators—SPM) in neurodegenerative disorders. PUFA-derived SPM are biosynthesized in response to chemicals produced from acute inflammatory responses. Preclinical studies from both AD and PD models suggest a dysregulation of SPM and their receptors in neurological disorders. Decreased SPM may be due to inadequate substrate, an imbalance between SPM and pro-inflammatory mediators or a disruption in SPM synthesis. SPMs hold great promise for neuroprotection in AD by altering expression of pro-inflammatory genes, modulating macrophage function, serving as a biomarker for AD status, and promoting resolution of neuroinflammation. In PD, data suggest SPM are able to cross the blood-brain barrier, inhibit microglial activation and decrease induced markers of inflammation, possibly as a result of their ability to downregulate NFκB signaling pathways. Several in vivo and in vitro studies suggest a benefit from administration of SPMs in both neurodegenerative disorders. However, extrapolation of these outcomes to humans is difficult as no models are able to replicate all features of AD or PD. Minimal data evaluating these PUFA-derived metabolites in humans with neurodegenerative disorders are available and a gap in knowledge exists regarding behavior of SPM and their receptors in patients with these conditions. There is also large gap in our knowledge regarding which lipid mediator would be most effective in which model of AD or PD and how dietary intake or supplementation can impact SPM levels. Future direction should include focused, translational efforts to investigate SPM as an add-on (in addition to standard treatment) or as standalone agents in patients with neurodegenerative disorders.
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Affiliation(s)
- Jana Ponce
- Division of Medical Nutrition Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE, United States
- *Correspondence: Jana Ponce,
| | - Arzu Ulu
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, Riverside, CA, United States
| | - Corrine Hanson
- Division of Medical Nutrition Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE, United States
| | - Erin Cameron-Smith
- Department of Neurological Sciences, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - John Bertoni
- Department of Neurological Sciences, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Jenna Wuebker
- Department of Pharmaceutical and Nutrition Care, Nebraska Medicine, Omaha, NE, United States
| | - Alfred Fisher
- Department of Internal Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
| | - Ka-Chun Siu
- Division of Medical Nutrition Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE, United States
| | - Vivien Marmelat
- Department of Biomechanics, College of Education, Health, and Human Sciences, University of Nebraska - Omaha, Omaha, NE, United States
| | - Jiri Adamec
- Department of Biochemistry, College of Arts and Sciences, University of Nebraska - Lincoln, Lincoln, NE, United States
| | - Danish Bhatti
- Department of Neurological Sciences, College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
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10
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Zelzer S, Meinitzer A, Herrmann M, Goessler W, Enko D. A Novel Method for the Determination of Vitamin D Metabolites Assessed at the Blood-Cerebrospinal Fluid Barrier. Biomolecules 2021; 11:biom11091288. [PMID: 34572501 PMCID: PMC8470512 DOI: 10.3390/biom11091288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022] Open
Abstract
The brain’s supply with vitamin D is poorly understood. Therefore, the present study aimed to determine 25-hydroxy vitamin D3 (25(OH)D) and 24,25-dihydroxy vitamin D (24,25(OH)2D3) in serum and cerebrospinal fluid (CSF) from individuals with intact and disturbed brain-CSF-barrier (BCB) function. In 292 pairs of serum and CSF samples the vitamin D metabolites were measured with liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). CSF/serum ratios (QALB, Q25(OH)D, Q24,25(OH)2D3) were calculated. Median (IQR) serum concentrations of 25(OH)D and 24,25(OH)2D3 were 63.8 (43.4–83.9) nmol/L and 4.2 (2.2–6.2) nmol/L. The CSF concentrations of both metabolites accounted for 3.7 and 3.3% of the respective serum concentrations. Serum 25(OH)D correlated inversely with Q25(OH)D and Q24,25(OH)2D3 implying a more efficient transport of both metabolites across the BCB when the serum concentration of 25(OH)D is low. In patients with BCB dysfunction, the CSF concentrations and the CSF/serum ratios of both vitamin D metabolites were higher than in individuals with intact BCB. The CSF concentrations of 25(OH)D and 24,25(OH)2D3 depend on BCB function and the respective serum concentrations of both metabolites. Higher vitamin D metabolite concentrations in CSF of patients with impaired BCB function may be due to passive diffusion across the BCB.
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Affiliation(s)
- Sieglinde Zelzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria; (A.M.); (D.E.)
- Correspondence: (S.Z.); (M.H.); Tel.: +43-316-385-13145 (S.Z. & M.H.); Fax: +43-316-385-13430 (S.Z. & M.H.)
| | - Andreas Meinitzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria; (A.M.); (D.E.)
| | - Markus Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria; (A.M.); (D.E.)
- Correspondence: (S.Z.); (M.H.); Tel.: +43-316-385-13145 (S.Z. & M.H.); Fax: +43-316-385-13430 (S.Z. & M.H.)
| | - Walter Goessler
- Institute of Chemistry, University of Graz, 8010 Graz, Austria;
| | - Dietmar Enko
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria; (A.M.); (D.E.)
- Institute of Clinical Chemistry and Laboratory Medicine, General Hospital Hochsteiermark, 8700 Leoben, Austria
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11
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Cytotoxicity of glucoevatromonoside alone and in combination with chemotherapy drugs and their effects on Na +,K +-ATPase and ion channels on lung cancer cells. Mol Cell Biochem 2021; 476:1825-1848. [PMID: 33459980 DOI: 10.1007/s11010-020-04040-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/22/2020] [Indexed: 12/16/2022]
Abstract
Cardiac glycosides (CGs) are useful drugs to treat cardiac illnesses and have potent cytotoxic and anticancer effects in cultured cells and animal models. Their receptor is the Na+,K+ ATPase, but other plasma membrane proteins might bind CGs as well. Herein, we evaluated the short- and long-lasting cytotoxic effects of the natural cardenolide glucoevatromonoside (GEV) on non-small-cell lung cancer H460 cells. We also tested GEV effects on Na+,K+ -ATPase activity and membrane currents, alone or in combination with selected chemotherapy drugs. GEV reduced viability, migration, and invasion of H460 cells spheroids. It also induced cell cycle arrest and death and reduced the clonogenic survival and cumulative population doubling. GEV inhibited Na+,K+-ATPase activity on A549 and H460 cells and purified pig kidney cells membrane. However, it showed no activity on the human red blood cell plasma membrane. Additionally, GEV triggered a Cl-mediated conductance on H460 cells without affecting the transient voltage-gated sodium current. The administration of GEV in combination with the chemotherapeutic drugs paclitaxel (PAC), cisplatin (CIS), irinotecan (IRI), and etoposide (ETO) showed synergistic antiproliferative effects, especially when combined with GEV + CIS and GEV + PAC. Taken together, our results demonstrate that GEV is a potential drug for cancer therapy because it reduces lung cancer H460 cell viability, migration, and invasion. Our results also reveal a link between the Na+,K+-ATPase and Cl- ion channels.
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12
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Monrose M, Thirouard L, Garcia M, Holota H, De Haze A, Caira F, Beaudoin C, Volle DH. New perspectives on PPAR, VDR and FXRα as new actors in testicular pathophysiology. Mol Aspects Med 2020; 78:100886. [PMID: 32878696 DOI: 10.1016/j.mam.2020.100886] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/27/2020] [Accepted: 07/29/2020] [Indexed: 12/21/2022]
Abstract
The incidence of reproductive disorders is constantly increasing and affects 15% of couples, with male's abnormalities diagnosed in almost half of the cases. The male gonads exert two major functions of the testis with the productions of gametes (exocrine function) and of sexual hormones (endocrine function). In the last decades, next to steroid receptors such as estrogen and androgen receptors, the involvement of other members of the nuclear receptor superfamily have been described such as Steroidogenic factor-1 (SF-1), Nerve growth factor IB (NGFIB), Liver-X-Receptorα (LXRα) and Dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1 (DAX-1). The purpose of this review is to highlight the emerging roles of some members of the nuclear receptor superfamily among which the vitamin-D Receptor (VDR), Peroxisome Proliferator-Activated Receptor (PPAR), Farnesoid-X-Receptor-α (FXRα). We discuss how these receptors could participate to explain male fertility disorders; and their potential to be use as biomarkers or therapeutic targets for management of fertility disorders.
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Affiliation(s)
- M Monrose
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - L Thirouard
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - M Garcia
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - H Holota
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - A De Haze
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - F Caira
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - C Beaudoin
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France
| | - D H Volle
- Inserm U1103, Université Clermont Auvergne, CNRS UMR-6293, GReD, F-63001, Clermont-Ferrand, France.
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13
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Chamani S, Bianconi V, Tasbandi A, Pirro M, Barreto GE, Jamialahmadi T, Sahebkar A. Resolution of Inflammation in Neurodegenerative Diseases: The Role of Resolvins. Mediators Inflamm 2020; 2020:3267172. [PMID: 32308554 PMCID: PMC7132591 DOI: 10.1155/2020/3267172] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 03/09/2020] [Indexed: 12/14/2022] Open
Abstract
Acute inflammation has been described as a reactive dynamic process, promoted by the secretion of proinflammatory mediators, including lipid molecules like leukotrienes and prostaglandins, and counterbalanced by proresolving mediators including omega-3 polyunsaturated fatty-acid- (PUFA-) derived molecules. The switch from the initiation to the resolution phase of acute inflammatory response is crucial for tissue homeostasis, whereas the failure to resolve early inflammation by specialized proresolving mediators leads to chronic inflammation and tissue damage. Among PUFA-derived proresolving mediators, different eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) derivatives have been described, namely, resolvins (resolution phase interaction products), which exert their anti-inflammatory and immune-regulatory activities through specific G-protein-coupled receptors. In recent years, compelling evidence has shown that impairment of resolution of inflammation is a crucial pathogenic hallmark in different neurodegenerative disorders, including Alzheimer's disease and Parkinson's disease. This review summarizes current knowledge on the role of resolvins in resolution of inflammation and highlights available evidence showing the neuroprotective potential of EPA- and DHA-derived resolvins (E-series and D-series resolvins, respectively) in neurodegenerative diseases.
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Affiliation(s)
- Sajad Chamani
- Birjand University of Medical Sciences, Birjand, Iran
| | - Vanessa Bianconi
- Unit of Internal Medicine, Department of Medicine, University of Perugia, Perugia, Italy
| | - Aida Tasbandi
- School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Matteo Pirro
- Unit of Internal Medicine, Department of Medicine, University of Perugia, Perugia, Italy
| | - George E. Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland
- Health Research Institute, University of Limerick, Limerick, Ireland
| | - Tannaz Jamialahmadi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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14
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Principi N, Esposito S. Vitamin D Deficiency During Pregnancy and Autism Spectrum Disorders Development. Front Psychiatry 2020; 10:987. [PMID: 32082196 PMCID: PMC7006052 DOI: 10.3389/fpsyt.2019.00987] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 12/12/2019] [Indexed: 12/18/2022] Open
Abstract
Autism spectrum disorder is a neurodevelopmental disorder characterized by reduced social interactions, impaired communications, and stereotypic and repetitive behavior with different degrees of severity. The etiology of autism spectrum disorder is unknown, although the interaction of genetic and environmental factors is believed to play a fundamental role in the process. The main aim of this narrative review is to discuss the current knowledge about the interrelationships between vitamin D deficiency during pregnancy and autism spectrum disorder development. Literature analysis showed that vitamin D supplementation during pregnancy plays a role in conditioning the development and function of the nervous system. Studies carried out in vitro and in experimental animals have shown that vitamin D deficiency can be associated with structural and functional abnormalities of the nervous system that can be observed in autism spectrum disorder patients. Moreover, it has been reported that vitamin D deficiency during pregnancy could be a risk factor for autism spectrum disorder development in the offspring, that children with autism spectrum disorder have significantly lower serum levels of vitamin D than normal children and that supplementation of vitamin D in autism spectrum disorder children is associated with a reduction in psychiatric manifestations. However, the data currently available do not adequately support the hypothesis that vitamin D may be a factor which contribute to the etiology of autism spectrum disorder. The effects of vitamin D supplementation during pregnancy should be better studied to establish whether and when fetal vulnerability is highest and if vitamin D supplementation is able to reduce the risk of structural and functional alterations of the nervous system and autism spectrum disorder development. The role of vitamin D after birth must be better defined to evaluate if vitamin D administration is potentially effective in reducing autism spectrum disorder manifestations.
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Affiliation(s)
| | - Susanna Esposito
- Pediatric Clinic, Pietro Barilla Children's Hospital, Department of Medicine and Surgery, University of Parma, Parma, Italy
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15
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A Narrative Role of Vitamin D and Its Receptor: With Current Evidence on the Gastric Tissues. Int J Mol Sci 2019; 20:ijms20153832. [PMID: 31387330 PMCID: PMC6695859 DOI: 10.3390/ijms20153832] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/30/2019] [Accepted: 08/01/2019] [Indexed: 02/06/2023] Open
Abstract
Vitamin D is a major steroid hormone that is gaining attention as a therapeutic molecule. Due to the general awareness of its importance for the overall well-being, vitamin D deficiency (VDD) is now recognized as a major health issue. The main reason for VDD is minimal exposure to sunlight. The vitamin D receptor (VDR) is a member of the steroid hormone receptors that induces a cascade of cell signaling to maintain healthy Ca2+ levels that serve to regulate several biological functions. However, the roles of vitamin D and its metabolism in maintaining gastric homeostasis have not yet been completely elucidated. Currently, there is a need to increase the vitamin D status in individuals worldwide as it has been shown to improve musculoskeletal health and reduce the risk of chronic illnesses, including some cancers, autoimmune and infectious diseases, type 2 diabetes mellitus, neurocognitive disorders, and general mortality. The role of vitamin D in gastric homeostasis is crucial and unexplored. This review attempts to elucidate the central role of vitamin D in preserving and maintaining the overall health and homeostasis of the stomach tissue.
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16
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Annalora AJ, Jozic M, Marcus CB, Iversen PL. Alternative splicing of the vitamin D receptor modulates target gene expression and promotes ligand-independent functions. Toxicol Appl Pharmacol 2018; 364:55-67. [PMID: 30552932 DOI: 10.1016/j.taap.2018.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/04/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023]
Abstract
Alternative splicing modulates gene function by creating splice variants with alternate functions or non-coding RNA activity. Naturally occurring variants of nuclear receptor (NR) genes with dominant negative or gain-of-function phenotypes have been documented, but their cellular roles, regulation, and responsiveness to environmental stress or disease remain unevaluated. Informed by observations that class I androgen and estrogen receptor variants display ligand-independent signaling in human cancer tissues, we questioned whether the function of class II NRs, like the vitamin D receptor (VDR), would also respond to alternative splicing regulation. Artificial VDR constructs lacking exon 3 (Dex3-VDR), encoding part of the DNA binding domain (DBD), and exon 8 (Dex8-VDR), encoding part of the ligand binding domain (LBD), were transiently transfected into DU-145 cells and stably-integrated into Caco-2 cells to study their effect on gene expression and cell viability. Changes in VDR promoter signaling were monitored by the expression of target genes (e.g. CYP24A1, CYP3A4 and CYP3A5). Ligand-independent VDR signaling was observed in variants lacking exon 8, and a significant loss of gene suppressor function was documented for variants lacking exon 3. The gain-of-function behavior of the Dex8-VDR variant was recapitulated in vitro using antisense oligonucleotides (ASO) that induce the skipping of exon 8 in wild-type VDR. ASO targeting the splice acceptor site of exon 8 significantly stimulated ligand-independent VDR reporter activity and the induction of CYP24A1 above controls. These results demonstrate how alternative splicing can re-program NR gene function, highlighting novel mechanisms of toxicity and new opportunities for the use of splice-switching oligonucleotides (SSO) in precision medicine.
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Affiliation(s)
- Andrew J Annalora
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA.
| | - Marija Jozic
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA
| | - Craig B Marcus
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA
| | - Patrick L Iversen
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA; LS Pharma, 884 Park St., Lebanon, OR 97355; USA
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17
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Tamayo M, Martin-Nunes L, Val-Blasco A, Piedras MJ, Larriba MJ, Gómez-Hurtado N, Fernández-Velasco M, Delgado C. Calcitriol, the Bioactive Metabolite of Vitamin D, Increases Ventricular K + Currents in Isolated Mouse Cardiomyocytes. Front Physiol 2018; 9:1186. [PMID: 30197603 PMCID: PMC6117532 DOI: 10.3389/fphys.2018.01186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 08/07/2018] [Indexed: 01/20/2023] Open
Abstract
Calcitriol, the bioactive metabolite of vitamin D, interacts with the ubiquitously expressed nuclear vitamin D receptor (VDR) to induce genomic effects, but it can also elicit rapid responses via membrane-associated VDR through mechanisms that are poorly understood. The down-regulation of K+ currents is the main origin of electrophysiological remodeling in pathological hypertrophy and heart failure (HF), which can contribute to action potential prolongation and subsequently increase the risk of triggered arrhythmias. Adult mouse ventricular myocytes were isolated and treated with 10 nM calcitriol or vehicle for 15–30 min. In some experiments, cardiomyocytes were pretreated with the Akt inhibitor triciribine. In the adult mouse ventricle, outward K+ currents involved in cardiac repolarization are comprised of three components: the fast transient outward current (Itof), the ultrarapid delayed rectifier K+ current (Ikur), and the non-inactivating steady-state outward current (Iss). K+ currents were investigated using the whole-cell or the perforated patch-clamp technique and normalized to cell capacitance to obtain current densities. Calcitriol treatment of cardiomyocytes induced an increase in the density of Itof and Ikur, which was lost in myocytes isolated from VDR-knockout mice. In addition, calcitriol activated Akt in cardiomyocytes and pretreatment with triciribine prevented the calcitriol-induced increase of outward K+ currents. In conclusion, we demonstrate that calcitriol via VDR and Akt increases both Itof and Ikur densities in mouse ventricular cardiomyocytes. Our findings may provide new mechanistics clues for the cardioprotective role of this hormone in the heart.
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Affiliation(s)
- María Tamayo
- Biomedical Research Institute "Alberto Sols" CSIC-UAM/CIBER-CV, Madrid, Spain
| | - Laura Martin-Nunes
- Biomedical Research Institute "Alberto Sols" CSIC-UAM/CIBER-CV, Madrid, Spain
| | - Almudena Val-Blasco
- Innate Immune Response Group, IdiPAZ/CIBER-CV, La Paz University Hospital, Madrid, Spain
| | - Maria J Piedras
- Biomedical Research Institute "Alberto Sols" CSIC-UAM/CIBER-CV, Madrid, Spain.,University Francisco de Vitoria, Madrid, Spain
| | - María J Larriba
- Biomedical Research Institute "Alberto Sols" CSIC-UAM/CIBERONC, Madrid, Spain
| | | | | | - Carmen Delgado
- Biomedical Research Institute "Alberto Sols" CSIC-UAM/CIBER-CV, Madrid, Spain
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18
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Ricca C, Aillon A, Bergandi L, Alotto D, Castagnoli C, Silvagno F. Vitamin D Receptor Is Necessary for Mitochondrial Function and Cell Health. Int J Mol Sci 2018; 19:ijms19061672. [PMID: 29874855 PMCID: PMC6032156 DOI: 10.3390/ijms19061672] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/03/2018] [Accepted: 06/03/2018] [Indexed: 01/09/2023] Open
Abstract
Vitamin D receptor (VDR) mediates many genomic and non-genomic effects of vitamin D. Recently, the mitochondrial effects of vitamin D have been characterized in many cell types. In this article, we investigated the importance of VDR not only in mitochondrial activity and integrity but also in cell health. The silencing of the receptor in different healthy, non-transformed, and cancer cells initially decreased cell growth and modulated the cell cycle. We demonstrated that, in silenced cells, the increased respiratory activity was associated with elevated reactive oxygen species (ROS) production. In the long run, the absence of the receptor caused impairment of mitochondrial integrity and, finally, cell death. Our data reveal that VDR plays a central role in protecting cells from excessive respiration and production of ROS that leads to cell damage. Because we confirmed our observations in different models of both normal and cancer cells, we conclude that VDR is essential for the health of human tissues.
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Affiliation(s)
- Chiara Ricca
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
| | - Alessia Aillon
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
| | - Loredana Bergandi
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
| | - Daniela Alotto
- Department of Chirurgia Generale e Specialistiche, Banca della Cute, AOU Città della Salute e della Scienza Torino, Via Zuretti 29, 10126 Torino, Italy.
| | - Carlotta Castagnoli
- Department of Chirurgia Generale e Specialistiche, Banca della Cute, AOU Città della Salute e della Scienza Torino, Via Zuretti 29, 10126 Torino, Italy.
| | - Francesca Silvagno
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
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19
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Starkey NJE, Li Y, Drenkhahn-Weinaug SK, Liu J, Lubahn DB. 27-Hydroxycholesterol Is an Estrogen Receptor β-Selective Negative Allosteric Modifier of 17β-Estradiol Binding. Endocrinology 2018; 159:1972-1981. [PMID: 29579190 PMCID: PMC6693046 DOI: 10.1210/en.2018-00081] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 03/13/2018] [Indexed: 01/23/2023]
Abstract
Estrogens bind to two nuclear estrogen receptor (ER) subtypes, ERα and ERβ, which are expressed in differing amounts in various tissues. The endogenous estrogen, 17β-estradiol (E2), binds to both subtypes with nearly equal affinity and is the prototypical agonist. Selective estrogen receptor modulators (SERMs) may bind to both subtypes with equivalent affinities but have agonist activities in some tissues while having antagonist activities in others. In the present study, we demonstrate that the first reported endogenous SERM, 27-hydroxycholesterol (27-OHC), binds preferentially (>100-fold) to ERβ over ERα. Furthermore, 27-OHC is not able to fully compete with E2 binding, suggesting the two may bind at different sites. We provide an allosteric ternary complex model for the simultaneous binding of 27-OHC and E2 to ERβ, which accurately describes the binding data we have observed. We conclude that 27-OHC is a negative allosteric modifier of E2 binding, with an inhibitor constantof 50 nM and cooperativity factor (α) of 0.036. We also propose an in silico three-dimensional model of the simultaneous binding to guide future experiments. Further study of this unique binding model may allow for the discovery of novel ERβ-selective ligands and potentially explain the lack of effectiveness of ERβ-selective agonists in humans vs preclinical models.
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Affiliation(s)
| | - Yufei Li
- Department of Biochemistry, University of Missouri, Columbia, Missouri
| | - Sara K Drenkhahn-Weinaug
- Department of Biochemistry, University of Missouri, Columbia, Missouri
- Department of Chemistry, Lindenwood University–Belleville, Belleville, Illinois
| | - Jinghua Liu
- Department of Biochemistry, University of Missouri, Columbia, Missouri
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri
| | - Dennis B Lubahn
- Department of Biochemistry, University of Missouri, Columbia, Missouri
- Department of Child Health, University of Missouri, Columbia, Missouri
- Correspondence: Dennis B. Lubahn, PhD, 110A Animal Science Research Center, University of Missouri, Columbia, Missouri 65211. E-mail:
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Effect of Curcuma xanthorrhiza Supplementation on Systemic Lupus Erythematosus Patients with Hypovitamin D Which Were Given Vitamin D 3 towards Disease Activity (SLEDAI), IL-6, and TGF- β1 Serum. Int J Rheumatol 2017; 2017:7687053. [PMID: 29445400 PMCID: PMC5763117 DOI: 10.1155/2017/7687053] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/13/2017] [Accepted: 09/25/2017] [Indexed: 12/19/2022] Open
Abstract
Background Curcumin contained in Curcuma xanthorrhiza is an immunomodulator that has similar biological effect as vitamin D. Combination of curcumin and vitamin D3 is expected to work synergistically. Objective To determine the effect of Curcuma xanthorrhiza supplementation on vitamin D3 administration to SLEDAI, IL-6, and TGF-β1 serum in SLE patients with hypovitamin D. Methods This was a double-blind RCT conducted in Saiful Anwar Hospital, Malang, in January 2016–March 2017. Subjects were SLE active (SLEDAI > 3) with levels of 25(OH)D3 ≤ 30 ng/ml and divided into two groups: those receiving cholecalciferol 3 × 400 IU and placebo 3 × 1 tablets (group I) and those receiving 3 × 400 IU cholecalciferol and Curcuma xanthorrhiza 3 × 20 mg for 3 months (group II). SLEDAI, levels of vitamin D, IL-6, and TGF-β1 in serum were evaluated before and after the treatment. Results There were no significant differences in SLEDAI reduction, decreased serum levels of IL-6, and increased levels of TGF-β1 serum among groups after the treatment. Decreased levels of serum IL-6 have a positive correlation with SLEDAI reduction. Conclusion. Curcuma xanthorrhiza supplementation on vitamin D3 had no effects on SLEDAI and serum levels of IL-6 and TGF-β1. This clinical trial is registered with NCT03155477.
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21
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Knabl J, Vattai A, Ye Y, Jueckstock J, Hutter S, Kainer F, Mahner S, Jeschke U. Role of Placental VDR Expression and Function in Common Late Pregnancy Disorders. Int J Mol Sci 2017; 18:ijms18112340. [PMID: 29113124 PMCID: PMC5713309 DOI: 10.3390/ijms18112340] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/24/2017] [Accepted: 10/26/2017] [Indexed: 12/14/2022] Open
Abstract
Vitamin D, besides its classical role in bone metabolism, plays a distinct role in multiple pathways of the feto-maternal unit. Calcitriol is the major active ligand of the nuclear vitamin D receptor (VDR). The vitamin D receptor (VDR) is expressed in different uteroplacental parts and exerts a variety of functions in physiologic pregnancy. It regulates decidualisation and implantation, influences hormone secretion and placental immune modulations. This review highlights the role of the vitamin D receptor in physiologic and disturbed pregnancy, as preeclampsia, fetal growth restriction, gestational diabetes and preterm birth. We discuss the existing literature regarding common VDR polymorphisms in these pregnancy disorders.
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Affiliation(s)
- Julia Knabl
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
- Department of Obstetrics and Gynecology, Klinik Hallerwiese, 90419 Nürnberg, Germany.
| | - Aurelia Vattai
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
| | - Yao Ye
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
| | - Julia Jueckstock
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
| | - Stefan Hutter
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
| | - Franz Kainer
- Department of Obstetrics and Gynecology, Klinik Hallerwiese, 90419 Nürnberg, Germany.
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians Universität München, 80337 Munich, Germany.
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22
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Reichrath J, Saternus R, Vogt T. Endocrine actions of vitamin D in skin: Relevance for photocarcinogenesis of non-melanoma skin cancer, and beyond. Mol Cell Endocrinol 2017; 453:96-102. [PMID: 28526240 DOI: 10.1016/j.mce.2017.05.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 11/20/2022]
Abstract
The skin represents a pivotal organ for the human body's vitamin D endocrine system, being both the site of ultraviolet (UV)-B-induced vitamin D synthesis and a target tissue for the pluripotent effects of 1,25(OH)2D3 and other biologically active vitamin D metabolites. As many other steroid hormones, 1,25(OH)2D3 exerts its effects via two independent signal transduction pathways: the classical genomic and the non-genomic pathway. While non-genomic effects of 1,25(OH)2D3 are in part exerted via effects on intracellular calcium, genomic effects are mediated by the vitamin D receptor (VDR). Recent findings convincingly support the concept of a new function of the VDR as a tumor suppressor in skin, with key components of the vitamin D endocrine system, including VDR, CYP24A1, CYP27A1, and CYP27B1 being strongly expressed in non-melanoma skin cancer (NMSC). It has now been shown that anti-tumor effects of VDR, that include some of its ligand-induced growth-regulatory effects, are at least in part mediated by interacting in a highly coordinated manner with the p53 family (p53/p63/p73) in response to a large number of alterations in cell homeostasis, including UV-induced DNA damage, a hallmark for skin photocarcinogenesis. Considering the relevance of the vitamin D endocrine system for carcinogenesis of skin cancer, it is not surprising that low 25(OH)D serum concentrations and genetic variants (SNPs) of the vitamin D endocrine system have been identified as potential risk factors for occurrence and prognosis of skin malignancies. In conclusion, an increasing body of evidence now convincingly supports the concept that the vitamin D endocrine system is of relevance for photocarcinogenesis and progression of NMSC and that its pharmacologic modulation by vitamin D, 1,25(OH)2D3, and analogs represents a promising new strategy for prevention and/or treatment of these malignancies.
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Affiliation(s)
- Jörg Reichrath
- Center for Clinical and Experimental Photo-Dermatology and Department of Dermatology, The Saarland University Hospital, 66421 Homburg, Germany.
| | - Roman Saternus
- Center for Clinical and Experimental Photo-Dermatology and Department of Dermatology, The Saarland University Hospital, 66421 Homburg, Germany
| | - Thomas Vogt
- Center for Clinical and Experimental Photo-Dermatology and Department of Dermatology, The Saarland University Hospital, 66421 Homburg, Germany
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23
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Zanatta AP, Brouard V, Gautier C, Goncalves R, Bouraïma-Lelong H, Mena Barreto Silva FR, Delalande C. Interactions between oestrogen and 1α,25(OH) 2-vitamin D 3 signalling and their roles in spermatogenesis and spermatozoa functions. Basic Clin Androl 2017; 27:10. [PMID: 28491323 PMCID: PMC5421336 DOI: 10.1186/s12610-017-0053-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 03/16/2017] [Indexed: 02/07/2023] Open
Abstract
Oestrogens and 1α,25(OH)2-vitamin D3 (1,25-D3) are steroids that can provide effects by binding to their receptors localised in the cytoplasm and in the nucleus or the plasma membrane respectively inducing genomic and non-genomic effects. As confirmed notably by invalidation of the genes, coding for their receptors as tested with mice with in vivo and in vitro treatments, oestrogens and 1,25-D3 are regulators of spermatogenesis. Moreover, some functions of ejaculated spermatozoa as viability, DNA integrity, motility, capacitation, acrosome reaction and fertilizing ability are targets for these hormones. The studies conducted on their mechanisms of action, even though not completely elicited, have allowed the demonstration of putative interactions between their signalling pathways that are worth examining more closely. The present review focuses on the elements regulated by oestrogens and 1,25-D3 in the testis and spermatozoa as well as the interactions between the signalling pathways of both hormones.
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Affiliation(s)
- Ana Paula Zanatta
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France.,Biochemistry Department, Laboratory of Hormones & Signal Transduction, UFSC, Florianópolis, Brazil
| | - Vanessa Brouard
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France
| | - Camille Gautier
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France
| | - Renata Goncalves
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France.,Biochemistry Department, Laboratory of Hormones & Signal Transduction, UFSC, Florianópolis, Brazil
| | | | | | - Christelle Delalande
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France.,Laboratoire Œstrogènes, Reproduction, Cancer (OeReCa), EA 2608 USC INRA1377, Université de Caen Normandie, Esplanade de la Paix, CS 14032, 14032 CAEN cedex 5, France
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24
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Tamayo M, Manzanares E, Bas M, Martín-Nunes L, Val-Blasco A, Jesús Larriba M, Fernández-Velasco M, Delgado C. Calcitriol (1,25-dihydroxyvitamin D3) increases L-type calcium current via protein kinase A signaling and modulates calcium cycling and contractility in isolated mouse ventricular myocytes. Heart Rhythm 2017; 14:432-439. [DOI: 10.1016/j.hrthm.2016.12.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 11/26/2022]
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25
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Gonçalves R, Zamoner A, Zanatta L, Zanatta AP, Remor AP, da Luz Scheffer D, Latini A, Silva FRMB. 1,25(OH)2 vitamin D3 signalling on immature rat Sertoli cells: gamma-glutamyl transpeptidase and glucose metabolism. J Cell Commun Signal 2017; 11:233-243. [PMID: 28160135 DOI: 10.1007/s12079-016-0367-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/22/2016] [Indexed: 01/06/2023] Open
Abstract
1α,25-Dihydroxyvitamin D3 (1,25-D3) is critical for the maintenance of normal male reproduction since reduced fertility is observed in vitamin D-deficient rats. Gamma-glutamyl transpeptidase (GGT) is a membrane-bound enzyme that is localized on Sertoli cells and catalyses the transfer of the gamma-glutamyl residues to an amino acid or peptide acceptor. Sertoli cells are also responsible for providing nutrients, as lactate, to the development of germ cells. The aim of this study was to investigate the effect and the mechanism of action of 1,25-D3 on GGT on Sertoli cell functions from 30-day-old immature rat testis. Results demonstrated that 1,25-D3 stimulates GGT activity at Sertoli cells plasma membrane through a PKA-dependent mechanism of action, which was not dependent of active de novo protein synthesis. The hormone increases glucose uptake, as well as lactate production and release by Sertoli cells without altering the reactive oxygen species (ROS) generation. In addition, 1,25-D3 did not change reduced glutathione (GSH) amount or oxygen consumption, and diminished Sertoli cell death. These findings demonstrate that 1,25-D3 stimulatory effect on GGT activity, glucose uptake, LDH activity and lactate production seem to be an important contribution of Sertoli cells for germ cells nutrition and for a full and active ongoing spermatogenesis.
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Affiliation(s)
- Renata Gonçalves
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Ariane Zamoner
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Leila Zanatta
- Departamento de Enfermagem, Centro de Educação Superior do Oeste, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil
| | - Ana Paula Zanatta
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Aline Pertile Remor
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Débora da Luz Scheffer
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Alexandra Latini
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil
| | - Fátima Regina Mena Barreto Silva
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário, Bairro Trindade, Cx Postal 5069, Florianópolis, Santa Catarina, CEP: 88040-970, Brazil.
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26
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Yates N, Crew RC, Wyrwoll CS. Vitamin D deficiency and impaired placental function: potential regulation by glucocorticoids? Reproduction 2017; 153:R163-R171. [PMID: 28137896 DOI: 10.1530/rep-16-0647] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/22/2017] [Accepted: 01/30/2017] [Indexed: 12/17/2022]
Abstract
Maternal vitamin D deficiency has been implicated in a range of pregnancy complications including preeclampsia, preterm birth and intrauterine growth restriction. Some of these adverse outcomes arise from alterations in placental function. Indeed, vitamin D appears critical for implantation, inflammation, immune function and angiogenesis in the placenta. Despite these associations, absence of the placental vitamin D receptor in mice provokes little effect. Thus, interactions between maternal and fetal compartments are likely crucial for instigating adverse placental changes. Indeed, maternal vitamin D deficiency elicits changes in glucocorticoid-related parameters in pregnancy, which increase placental and fetal glucocorticoid exposure. As in utero glucocorticoid excess has a well-established role in eliciting placental dysfunction and fetal growth restriction, this review proposes that glucocorticoids are an important consideration when understanding the impact of vitamin D deficiency on placental function and fetal development.
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Affiliation(s)
| | - Rachael C Crew
- School of Human SciencesThe University of Western Australia, Perth, Australia
| | - Caitlin S Wyrwoll
- School of Human SciencesThe University of Western Australia, Perth, Australia
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27
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Tee WV, Ripen AM, Mohamad SB. The conformational dynamics of H2-H3n and S2-H6 in gating ligand entry into the buried binding cavity of vitamin D receptor. Sci Rep 2016; 6:35937. [PMID: 27786277 PMCID: PMC5081507 DOI: 10.1038/srep35937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 10/07/2016] [Indexed: 11/13/2022] Open
Abstract
Crystal structures of holo vitamin D receptor (VDR) revealed a canonical conformation in which the ligand is entrapped in a hydrophobic cavity buried in the ligand-binding domain (LBD). The mousetrap model postulates that helix 12 is positioned away from the domain to expose the interior cavity. However, the extended form of helix 12 is likely due to artifacts during crystallization. In this study, we set out to investigate conformational dynamics of apo VDR using molecular dynamics simulation on microsecond timescale. Here we show the neighboring backbones of helix 2-helix 3n and beta strand 2-helix 6 of LBD, instead of the helix 12, undergo large-scale motion, possibly gating the entrance of ligand to the ligand binding domain. Docking analysis to the simulated open structure of VDR with the estimated free energy of -37.0 kJ/mol, would emphasise the role of H2-H3n and S2-H6 in facilitating the entrance of calcitriol to the LBD of VDR.
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Affiliation(s)
- Wei-Ven Tee
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Adiratna Mat Ripen
- Allergy and Immunology Research Centre, Institute for Medical Research, Jalan Pahang, 50588 Kuala Lumpur, Malaysia
| | - Saharuddin Bin Mohamad
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Centre of Research for Computational Sciences and Informatics in Biology, Bioindustry, Environment, Agriculture and Healthcare (CRYSTAL), University of Malaya, 50603 Kuala Lumpur, Malaysia
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28
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Yang WS, Yu H, Kim JJ, Lee MJ, Park SK. Vitamin D-induced ectodomain shedding of TNF receptor 1 as a nongenomic action: D3 vs D2 derivatives. J Steroid Biochem Mol Biol 2016; 155:18-25. [PMID: 26385608 DOI: 10.1016/j.jsbmb.2015.09.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 09/10/2015] [Accepted: 09/12/2015] [Indexed: 01/06/2023]
Abstract
As a nongenomic action, 1,25-dihydroxyvitamin D3 (1,25D3) induces L-type Ca(2+) channel-mediated extracellular Ca(2+) influx in human aortic smooth muscle cells (HASMCs), which activates a disintegrin and metalloprotease 10 (ADAM10) to cleave and shed the ectodomain of tumor necrosis factor receptor 1 (TNFR1). In this study, we examined the potencies of other vitamin D3 and D2 analogs to stimulate the ectodomain shedding of TNFR1 in HASMCs. 25-Hydroxyvitamin D3 (25D3), a precursor of 1,25D3, and elocalcitol, an analog of 1,25D3, caused ectodomain shedding of TNFR1 within 30 min, whereas 1,25-dihydroxyvitamin D2 (1,25D2) and paricalcitol, a derivative of 1,25D2, did not. Both 25D3 and elocalcitol rapidly induced extracellular Ca(2+) influx and markedly increased intracellular Ca(2+), while 1,25D2 and paricalcitol caused only small increases in intracellular Ca(2+). 25D3- and elocalcitol-induced TNFR1 ectodomain sheddings were abolished by verapamil and in Ca(2+)-free media. Both 25D3 and elocalcitol caused the translocation of ADAM10 to the cell surface, which was inhibited by verapamil, while 1,25D2 and paricalcitol did not cause ADAM10 translocation. When ADAM10 was depleted by ADAM10-siRNA, 25D3 and elocalcitol could not induce ectodomain shedding of TNFR1. The plasma membrane receptor, endoplasmic reticulum stress protein 57 (ERp57), but not the classic vitamin D receptor, mediated the nongenomic action of vitamin D to induce ectodomain shedding of TNFR1. In summary, like 1,25D3, 25D3 and elocalcitol caused ADAM10-mediated ectodomain shedding of TNFR1, whereas 1,25D2 and paricalcitol did not. The difference may depend on their affinities to ERp57 through which extracellular Ca(2+) influx is induced.
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MESH Headings
- ADAM Proteins/genetics
- ADAM Proteins/metabolism
- ADAM10 Protein
- Amyloid Precursor Protein Secretases/genetics
- Amyloid Precursor Protein Secretases/metabolism
- Calcitriol/analogs & derivatives
- Calcitriol/metabolism
- Calcitriol/pharmacology
- Calcium/metabolism
- Calcium Channels, L-Type/metabolism
- Cells, Cultured/drug effects
- Cholecalciferol/analogs & derivatives
- Ergocalciferols/metabolism
- Ergocalciferols/pharmacology
- Humans
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Muscle, Smooth, Vascular/cytology
- Protein Disulfide-Isomerases/genetics
- Protein Disulfide-Isomerases/metabolism
- Protein Structure, Tertiary
- Receptors, Calcitriol/genetics
- Receptors, Calcitriol/metabolism
- Receptors, Tumor Necrosis Factor, Type I/chemistry
- Receptors, Tumor Necrosis Factor, Type I/metabolism
- Vitamin D/analogs & derivatives
- Vitamin D/metabolism
- Vitamin D/pharmacology
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Affiliation(s)
- Won Seok Yang
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, College of Medicine, University of Ulsan, 88 Olympic-Ro 43-Gil, SongPa-Gu, Seoul 138-736, Republic of Korea
| | - Hoon Yu
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, College of Medicine, University of Ulsan, 88 Olympic-Ro 43-Gil, SongPa-Gu, Seoul 138-736, Republic of Korea
| | - Jin Ju Kim
- Asan Institute for Life Sciences, 88 Olympic-Ro 43-Gil, SongPa-Gu, Seoul 138-736, Republic of Korea
| | - Mee Jeong Lee
- Department of Pediatrics, College of Medicine, Dankook University, Anseo-dong San 16-5, Cheonan, Chungcheongnam-do 330-715, Republic of Korea
| | - Su-Kil Park
- Division of Nephrology, Department of Internal Medicine, Asan Medical Center, College of Medicine, University of Ulsan, 88 Olympic-Ro 43-Gil, SongPa-Gu, Seoul 138-736, Republic of Korea.
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29
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Consiglio M, Viano M, Casarin S, Castagnoli C, Pescarmona G, Silvagno F. Mitochondrial and lipogenic effects of vitamin D on differentiating and proliferating human keratinocytes. Exp Dermatol 2015; 24:748-53. [PMID: 26010336 DOI: 10.1111/exd.12761] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2015] [Indexed: 12/11/2022]
Abstract
Even in cells that are resistant to the differentiating effects of vitamin D, the activated vitamin D receptor (VDR) can downregulate the mitochondrial respiratory chain and sustain cell growth through enhancing the activity of biosynthetic pathways. The aim of this study was to investigate whether vitamin D is effective also in modulating mitochondria and biosynthetic metabolism of differentiating cells. We compared the effect of vitamin D on two cellular models: the primary human keratinocytes, differentiating and sensitive to the genomic action of VDR, and the human keratinocyte cell line HaCaT, characterized by a rapid growth and resistance to vitamin D. We analysed the nuclear translocation and features of VDR, the effects of vitamin D on mitochondrial transcription and the consequences on lipid biosynthetic fate. We found that the negative modulation of respiratory chain is a general mechanism of action of vitamin D, but at high doses, the HaCaT cells became resistant to mitochondrial effects by upregulating the catabolic enzyme CYP24 hydroxylase. In differentiating keratinocytes, vitamin D treatment promoted intracellular lipid deposition, likewise the inhibitor of respiratory chain stigmatellin, whereas in proliferating HaCaT, this biosynthetic pathway was not inducible by the hormone. By linking the results on respiratory chain and lipid accumulation, we conclude that vitamin D, by suppressing respiratory chain transcription in all keratinocytes, is able to support both the proliferation and the specialized metabolism of differentiating cells. Through mitochondrial control, vitamin D can have an essential role in all the metabolic phenotypes occurring in healthy and diseased skin.
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Affiliation(s)
| | - Marta Viano
- Department of Oncology, University of Torino, Italy
| | - Stefania Casarin
- Chirurgia Generale e Specialistiche, Banca della Cute, AOU Città della Salute e della Scienza Torino, Italy
| | - Carlotta Castagnoli
- Chirurgia Generale e Specialistiche, Banca della Cute, AOU Città della Salute e della Scienza Torino, Italy
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30
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Tongkao-On W, Carter S, Reeve VE, Dixon KM, Gordon-Thomson C, Halliday GM, Tuckey RC, Mason RS. CYP11A1 in skin: an alternative route to photoprotection by vitamin D compounds. J Steroid Biochem Mol Biol 2015; 148:72-8. [PMID: 25448743 DOI: 10.1016/j.jsbmb.2014.11.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/12/2014] [Accepted: 11/14/2014] [Indexed: 12/18/2022]
Abstract
Topical 1,25-dihydroxyvitamin D (1,25D) and other vitamin D compounds have been shown to protect skin from damage by ultraviolet radiation (UVR) in a process that requires the vitamin D receptor. Yet, while mice which do not express the vitamin D receptor are more susceptible to photocarcinogenesis, mice unable to 1α-hydroxylate 25-hydroxyvitamin D to form 1,25D do not show increased susceptibility to UVR-induced skin tumors. A possible explanation is that an alternative pathway, which does not involve 1α-hydroxylation, may produce photoprotective compounds from vitamin D. The cholesterol side chain cleavage enzyme CYP11A1 is expressed in skin and produces 20-hydroxyvitamin D3 (20OHD) as a major product of vitamin D3. We examined whether topical 20OHD would affect UVR-induced DNA damage, inflammatory edema or immune suppression produced in Skh:hr1 mice. Photoprotection by 20OHD at 23 or 46pmol/cm(2) against cyclobutane pyrimidine dimers (DNA lesions) after UVR in mice was highly effective, up to 98±0.8%, (p<0.001) and comparable to that of 1,25D. Sunburn edema measured as skinfold thickness 24h after UVR was also significantly reduced by 20OHD (p<0.001). In studies of contact hypersensitivity (CHS), which is suppressed by UVR, topical application of 20OHD to mice protected against UVR-induced immunosuppression (p<0.05), similar to the effect of 1,25D at similar doses (46±0.6% protection with 20OHD, 44±0.5% with 1,25D). Both UVR-induced DNA damage and immunosuppression contribute to increased susceptibility to UVR-induced skin tumors. This study indicates a potentially anti-photocarcinogenic role of the naturally occurring vitamin D metabolite, 20OHD, which does not depend on 1α-hydroxylation for generation. This article is part of a Special Issue entitled '17th Vitamin D Workshop'.
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Affiliation(s)
- Wannit Tongkao-On
- School of Medical Sciences and the Bosch Institute, University of Sydney, NSW, Australia
| | - Sally Carter
- School of Medical Sciences and the Bosch Institute, University of Sydney, NSW, Australia
| | - Vivienne E Reeve
- Faculty of Veterinary Science, University of Sydney, NSW, Australia
| | - Katie M Dixon
- School of Medical Sciences and the Bosch Institute, University of Sydney, NSW, Australia
| | - Clare Gordon-Thomson
- School of Medical Sciences and the Bosch Institute, University of Sydney, NSW, Australia
| | - Gary M Halliday
- Dermatology and Bosch Institute, University of Sydney, NSW, Australia
| | - Robert C Tuckey
- School of Chemistry and Biochemistry, University of Western Australia, Crawley, WA, Australia
| | - Rebecca S Mason
- School of Medical Sciences and the Bosch Institute, University of Sydney, NSW, Australia.
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31
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Groves NJ, McGrath JJ, Burne THJ. Vitamin D as a neurosteroid affecting the developing and adult brain. Annu Rev Nutr 2015; 34:117-41. [PMID: 25033060 DOI: 10.1146/annurev-nutr-071813-105557] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Vitamin D deficiency is prevalent throughout the world, and growing evidence supports a requirement for optimal vitamin D levels for the healthy developing and adult brain. Vitamin D has important roles in proliferation and differentiation, calcium signaling within the brain, and neurotrophic and neuroprotective actions; it may also alter neurotransmission and synaptic plasticity. Recent experimental studies highlight the impact that vitamin D deficiency has on brain function in health and disease. In addition, results from recent animal studies suggest that vitamin D deficiency during adulthood may exacerbate underlying brain disorders and/or worsen recovery from brain stressors. An increasing number of epidemiological studies indicate that vitamin D deficiency is associated with a wide range of neuropsychiatric disorders and neurodegenerative diseases. Vitamin D supplementation is readily available and affordable, and this review highlights the need for further research.
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Affiliation(s)
- Natalie J Groves
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland 4072, Australia;
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32
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Mackinnon JAG, Gallastegui N, Osguthorpe DJ, Hagler AT, Estébanez-Perpiñá E. Allosteric mechanisms of nuclear receptors: insights from computational simulations. Mol Cell Endocrinol 2014; 393:75-82. [PMID: 24911885 DOI: 10.1016/j.mce.2014.05.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 05/15/2014] [Accepted: 05/19/2014] [Indexed: 01/07/2023]
Abstract
The traditional structural view of allostery defines this key regulatory mechanism as the ability of one conformational event (allosteric site) to initiate another in a separate location (active site). In recent years computational simulations conducted to understand how this phenomenon occurs in nuclear receptors (NRs) has gained significant traction. These results have yield insights into allosteric changes and communication mechanisms that underpin ligand binding, coactivator binding site formation, post-translational modifications, and oncogenic mutations. Moreover, substantial efforts have been made in understanding the dynamic processes involved in ligand binding and coregulator recruitment to different NR conformations in order to predict cell/tissue-selective pharmacological outcomes of drugs. They also have improved the accuracy of in silico screening protocols so that nowadays they are becoming part of optimisation protocols for novel therapeutics. Here we summarise the important contributions that computational simulations have made towards understanding the structure/function relationships of NRs and how these can be exploited for rational drug design.
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Affiliation(s)
- Jonathan A G Mackinnon
- Institute of Biomedicine of the University of Barcelona (IBUB), Department of Biochemistry and Molecular Biology, University of Barcelona (UB), Baldiri-Reixac 15-21, 08028 Barcelona, Spain
| | - Nerea Gallastegui
- Institute of Biomedicine of the University of Barcelona (IBUB), Department of Biochemistry and Molecular Biology, University of Barcelona (UB), Baldiri-Reixac 15-21, 08028 Barcelona, Spain
| | - David J Osguthorpe
- Shifa Biomedical, 1 Great Valley Parkway, Suite 8, Malvern, PA 19355, USA
| | - Arnold T Hagler
- Department of Chemistry, University of Massachusetts, 701 Lederle, Graduate Research Tower, 710 North Pleasant Street, Amherst, MA 01003-9336, USA.
| | - Eva Estébanez-Perpiñá
- Institute of Biomedicine of the University of Barcelona (IBUB), Department of Biochemistry and Molecular Biology, University of Barcelona (UB), Baldiri-Reixac 15-21, 08028 Barcelona, Spain.
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33
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Functional Importance of 1α,25(OH)2-Vitamin D3 and the Identification of Its Nongenomic and Genomic Signaling Pathways in the Testis. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/808906] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The 1α,25(OH)2-vitamin D3 (1,25-D3) is known by its classic effects on Ca2+ metabolism and regulation of cellular proliferation and differentiation. The hormone 1,25-D3 acts in the testis through nongenomic and genomic events being implicated in the success of spermatogenesis in rats and in human being. The aim of this review was to highlight the effect and intracellular pathways of 1,25-D3 to modulate the spermatogenesis. The pivotal role of 1,25-D3 in male reproduction is reinforced by the presence of VDR and 1α-hydroxylase in reproductive tract. Also, the marked expression of VDR and the VD metabolizing enzymes in human testis, ejaculatory tract, and mature spermatozoa implicates the 1,25-D3 in spermatogenesis and maturation of human spermatozoa. Among genomic events, 1,25-D3 influences the expression of calcium binding protein and stimulates aromatase gene expression through a nongenomic activation of the membrane-bound VDR receptor involving the PKA pathway in the testis. Also, 1,25-D3 stimulates amino acid transport and exocytosis in testis by nongenomic events coupled to ionic currents triggered at plasma membrane. All together, the demonstration that 1,25-D3 regulates both Sertoli cell and sperm function may be useful for the study and development of new therapeutic strategies for the male reproductive disorders.
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Yip KH, Kolesnikoff N, Yu C, Hauschild N, Taing H, Biggs L, Goltzman D, Gregory PA, Anderson PH, Samuel MS, Galli SJ, Lopez AF, Grimbaldeston MA. Mechanisms of vitamin D₃ metabolite repression of IgE-dependent mast cell activation. J Allergy Clin Immunol 2014; 133:1356-64, 1364.e1-14. [PMID: 24461581 PMCID: PMC4154631 DOI: 10.1016/j.jaci.2013.11.030] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 10/15/2013] [Accepted: 11/15/2013] [Indexed: 01/11/2023]
Abstract
BACKGROUND Mast cells have gained notoriety based on their detrimental contributions to IgE-mediated allergic disorders. Although mast cells express the vitamin D receptor (VDR), it is not clear to what extent 1α,25-dihydroxyvitamin D3 (1α,25[OH]2D3) or its predominant inactive precursor metabolite in the circulation, 25-hydroxyvitamin D3 (25OHD3), can influence IgE-mediated mast cell activation and passive cutaneous anaphylaxis (PCA) in vivo. OBJECTIVE We sought to assess whether the vitamin D3 metabolites 25OHD3 and 1α,25(OH)2D3 can repress IgE-dependent mast cell activation through mast cell-25-hydroxyvitamin D-1α-hydroxylase (CYP27B1) and mast cell-VDR activity. METHODS We measured the extent of vitamin D3 suppression of IgE-mediated mast cell degranulation and mediator production in vitro, as well as the vitamin D3-induced curtailment of PCA responses in WBB6F1-Kit(W/W-v) or C57BL/6J-Kit(W-sh/W-sh) mice engrafted with mast cells that did or did not express VDR or CYP27B1. RESULTS Here we show that mouse and human mast cells can convert 25OHD3 to 1α,25(OH)2D3 through CYP27B1 activity and that both of these vitamin D3 metabolites suppressed IgE-induced mast cell-derived proinflammatory and vasodilatory mediator production in a VDR-dependent manner in vitro. Furthermore, epicutaneously applied vitamin D3 metabolites significantly reduced the magnitude of skin swelling associated with IgE-mediated PCA reactions in vivo; a response that required functional mast cell-VDRs and mast cell-CYP27B1. CONCLUSION Taken together, our findings provide a mechanistic explanation for the anti-inflammatory effects of vitamin D3 on mast cell function by demonstrating that mast cells can actively metabolize 25OHD3 to dampen IgE-mediated mast cell activation in vitro and in vivo.
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Affiliation(s)
- Kwok-Ho Yip
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia
| | - Natasha Kolesnikoff
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia
| | - Chunping Yu
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia; University of Adelaide, Adelaide, Australia
| | - Nicholas Hauschild
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia
| | - Houng Taing
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia; University of Adelaide, Adelaide, Australia
| | - Lisa Biggs
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia
| | - David Goltzman
- Departments of Medicine and Physiology, McGill University, Montreal, Quebec, Canada
| | - Philip A Gregory
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia
| | | | - Michael S Samuel
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia; University of Adelaide, Adelaide, Australia; University of South Australia, Adelaide, Australia
| | - Stephen J Galli
- Departments of Pathology and of Microbiology and Immunology, Stanford University School of Medicine, Stanford, Calif
| | - Angel F Lopez
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia; University of Adelaide, Adelaide, Australia; University of South Australia, Adelaide, Australia
| | - Michele A Grimbaldeston
- Division of Human Immunology, Centre for Cancer Biology, SA Pathology, Adelaide, Australia; University of Adelaide, Adelaide, Australia; University of South Australia, Adelaide, Australia.
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Hughes TS, Giri PK, de Vera IMS, Marciano DP, Kuruvilla DS, Shin Y, Blayo AL, Kamenecka TM, Burris TP, Griffin PR, Kojetin DJ. An alternate binding site for PPARγ ligands. Nat Commun 2014; 5:3571. [PMID: 24705063 PMCID: PMC4070320 DOI: 10.1038/ncomms4571] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 03/06/2014] [Indexed: 12/18/2022] Open
Abstract
PPARγ is a target for insulin-sensitizing drugs such as glitazones, which improve plasma glucose maintenance in patients with diabetes. Synthetic ligands have been designed to mimic endogenous ligand binding to a canonical ligand-binding pocket to hyperactivate PPARγ. Here we reveal that synthetic PPARγ ligands also bind to an alternate site, leading to unique receptor conformational changes that impact coregulator binding, transactivation and target gene expression. Using structure-function studies we show that alternate site binding occurs at pharmacologically relevant ligand concentrations, and is neither blocked by covalently bound synthetic antagonists nor by endogenous ligands indicating non-overlapping binding with the canonical pocket. Alternate site binding likely contributes to PPARγ hyperactivation in vivo, perhaps explaining why PPARγ full and partial or weak agonists display similar adverse effects. These findings expand our understanding of PPARγ activation by ligands and suggest that allosteric modulators could be designed to fine tune PPARγ activity without competing with endogenous ligands.
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Affiliation(s)
- Travis S Hughes
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Pankaj Kumar Giri
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Ian Mitchelle S de Vera
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - David P Marciano
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Dana S Kuruvilla
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Youseung Shin
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Anne-Laure Blayo
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Theodore M Kamenecka
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Thomas P Burris
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Patrick R Griffin
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
| | - Douglas J Kojetin
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, Florida 33458, USA
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Heger M, van Golen RF, Broekgaarden M, Michel MC. The molecular basis for the pharmacokinetics and pharmacodynamics of curcumin and its metabolites in relation to cancer. Pharmacol Rev 2013; 66:222-307. [PMID: 24368738 DOI: 10.1124/pr.110.004044] [Citation(s) in RCA: 346] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This review addresses the oncopharmacological properties of curcumin at the molecular level. First, the interactions between curcumin and its molecular targets are addressed on the basis of curcumin's distinct chemical properties, which include H-bond donating and accepting capacity of the β-dicarbonyl moiety and the phenylic hydroxyl groups, H-bond accepting capacity of the methoxy ethers, multivalent metal and nonmetal cation binding properties, high partition coefficient, rotamerization around multiple C-C bonds, and the ability to act as a Michael acceptor. Next, the in vitro chemical stability of curcumin is elaborated in the context of its susceptibility to photochemical and chemical modification and degradation (e.g., alkaline hydrolysis). Specific modification and degradatory pathways are provided, which mainly entail radical-based intermediates, and the in vitro catabolites are identified. The implications of curcumin's (photo)chemical instability are addressed in light of pharmaceutical curcumin preparations, the use of curcumin analogues, and implementation of nanoparticulate drug delivery systems. Furthermore, the pharmacokinetics of curcumin and its most important degradation products are detailed in light of curcumin's poor bioavailability. Particular emphasis is placed on xenobiotic phase I and II metabolism as well as excretion of curcumin in the intestines (first pass), the liver (second pass), and other organs in addition to the pharmacokinetics of curcumin metabolites and their systemic clearance. Lastly, a summary is provided of the clinical pharmacodynamics of curcumin followed by a detailed account of curcumin's direct molecular targets, whereby the phenotypical/biological changes induced in cancer cells upon completion of the curcumin-triggered signaling cascade(s) are addressed in the framework of the hallmarks of cancer. The direct molecular targets include the ErbB family of receptors, protein kinase C, enzymes involved in prostaglandin synthesis, vitamin D receptor, and DNA.
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Affiliation(s)
- Michal Heger
- Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands.
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Mizwicki MT, Liu G, Fiala M, Magpantay L, Sayre J, Siani A, Mahanian M, Weitzman R, Hayden EY, Rosenthal MJ, Nemere I, Ringman J, Teplow DB. 1α,25-dihydroxyvitamin D3 and resolvin D1 retune the balance between amyloid-β phagocytosis and inflammation in Alzheimer's disease patients. J Alzheimers Dis 2013. [PMID: 23186989 DOI: 10.3233/jad-121735] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
As immune defects in amyloid-β (Aβ) phagocytosis and degradation underlie Aβ deposition and inflammation in Alzheimer's disease (AD) brain, better understanding of the relation between Aβ phagocytosis and inflammation could lead to promising preventive strategies. We tested two immune modulators in peripheral blood mononuclear cells (PBMCs) of AD patients and controls: 1α,25(OH)2-vitamin D3 (1,25D3) and resolvin D1 (RvD1). Both 1,25D3 and RvD1 improved phagocytosis of FAM-Aβ by AD macrophages and inhibited fibrillar Aβ-induced apoptosis. The action of 1,25D3 depended on the nuclear vitamin D and the protein disulfide isomerase A3 receptors, whereas RvD1 required the chemokine receptor, GPR32. The activities of 1,25D3 and RvD1 commonly required intracellular calcium, MEK1/2, PKA, and PI3K signaling; however, the effect of RvD1 was more sensitive to pertussis toxin. In this case study, the AD patients: a) showed significant transcriptional up regulation of IL1RN, ITGB2, and NFκB; and b) revealed two distinct groups when compared to controls: group 1 decreased and group 2 increased transcription of TLRs, IL-1, IL1R1 and chemokines. In the PBMCs/macrophages of both groups, soluble Aβ (sAβ) increased the transcription/secretion of cytokines (e.g., IL1 and IL6) and chemokines (e.g., CCLs and CXCLs) and 1,25D3/RvD1 reversed most of the sAβ effects. However, they both further increased the expression of IL1 in the group 1, sβ-treated cells. We conclude that in vitro, 1,25D3 and RvD1 rebalance inflammation to promote Aβ phagocytosis, and suggest that low vitamin D3 and docosahexaenoic acid intake and/or poor anabolic production of 1,25D3/RvD1 in PBMCs could contribute to AD onset/pathology.
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Affiliation(s)
- Mathew T Mizwicki
- Department of Surgery, David Geffen School of Medicine at UCLA, University of California-Los Angeles, CA 90095, USA.
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Control of late cornified envelope genes relevant to psoriasis risk: upregulation by 1,25-dihydroxyvitamin D3 and plant-derived delphinidin. Arch Dermatol Res 2013; 305:867-78. [DOI: 10.1007/s00403-013-1390-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 06/21/2013] [Accepted: 06/28/2013] [Indexed: 10/26/2022]
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Zhou S, Geng S, Glowacki J. Histone deacetylation mediates the rejuvenation of osteoblastogenesis by the combination of 25(OH)D3 and parathyroid hormone in MSCs from elders. J Steroid Biochem Mol Biol 2013; 136:156-9. [PMID: 22982627 PMCID: PMC3548026 DOI: 10.1016/j.jsbmb.2012.09.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/30/2012] [Accepted: 09/02/2012] [Indexed: 11/21/2022]
Abstract
Vitamin D metabolites are important effectors of bone and mineral homeostasis. Human bone marrow stromal cells (hMSCs) are targets of 1α,25-dihydroxyvitamin D [1α,25(OH)2D] action to promote their differentiation to osteoblasts. Osteoblastogenesis is also stimulated by 25-hydroxyvitamin D [25(OH)D], an effect that requires conversion to 1α,25(OH)2D3 by 25-hydroxyvitamin D3 1α-hydroxylase (CYP27B1). These findings support an autocrine/paracrine role of vitamin D metabolism in osteoblastogenesis of hMSCs. In this study, we assessed whether and by what mechanisms osteoblastogenesis could be rejuvenated with hMSCs from elders. First, knockdown studies with VDR-siRNA showed that both the pro-differentiation and anti-proliferative effects of 1α,25(OH)2D3 required VDR. Second, 100nM 25(OH)D3 (p<0.01 vs. control, ANOVA) and 100nM PTH1-34 (p<0.05) significantly stimulated alkaline phosphatase (ALP) activity (a measure of osteoblastogenesis), with a synergistic effect when combined (p<0.001). Scriptaid, an inhibitor of histone deacetylase, blocked the effect of 25(OH)D3 and PTH on osteoblastogenesis. Scriptaid alone downregulated VDR in hMSCs. These data demonstrate that histone deacetylation is required for the synergistic effect of 25(OH)D3 and PTH on osteoblastogenesis in hMSCs. Both VDR siRNA and Scriptaid dowregulated VDR mRNA and inhibited osteoblastogenesis. Thus, epigenetic regulation of the VDR may be central to rejuvenating osteoblastogenesis in hMSCs from elders. This article is part of a Special Issue entitled 'Vitamin D Workshop'.
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Affiliation(s)
- Shuanhu Zhou
- Department of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138, USA
| | - Shuo Geng
- Department of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin Medical University, Harbin, Heilongjiang Province 150001, China
| | - Julie Glowacki
- Department of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Corresponding author: Orthopedic Research, Brigham and Womens Hospital, 75 Francis Street, Boston, MA 02115 USA, Tel: 617-732-5397, Fax: 617-732-6937
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Girgis CM, Clifton-Bligh RJ, Hamrick MW, Holick MF, Gunton JE. The roles of vitamin D in skeletal muscle: form, function, and metabolism. Endocr Rev 2013; 34:33-83. [PMID: 23169676 DOI: 10.1210/er.2012-1012] [Citation(s) in RCA: 342] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Beyond its established role in bone and mineral homeostasis, there is emerging evidence that vitamin D exerts a range of effects in skeletal muscle. Reports of profound muscle weakness and changes in the muscle morphology of adults with vitamin D deficiency have long been described. These reports have been supplemented by numerous trials assessing the impact of vitamin D on muscle strength and mass and falls in predominantly elderly and deficient populations. At a basic level, animal models have confirmed that vitamin D deficiency and congenital aberrations in the vitamin D endocrine system may result in muscle weakness. To explain these effects, some molecular mechanisms by which vitamin D impacts on muscle cell differentiation, intracellular calcium handling, and genomic activity have been elucidated. There are also suggestions that vitamin D alters muscle metabolism, specifically its sensitivity to insulin, which is a pertinent feature in the pathophysiology of insulin resistance and type 2 diabetes. We will review the range of human clinical, animal, and cell studies that address the impact of vitamin D in skeletal muscle, and discuss the controversial issues. This is a vibrant field of research and one that continues to extend the frontiers of knowledge of vitamin D's broad functional repertoire.
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Affiliation(s)
- Christian M Girgis
- Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, New South Wales, Australia.
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Eyles DW, Burne THJ, McGrath JJ. Vitamin D, effects on brain development, adult brain function and the links between low levels of vitamin D and neuropsychiatric disease. Front Neuroendocrinol 2013; 34:47-64. [PMID: 22796576 DOI: 10.1016/j.yfrne.2012.07.001] [Citation(s) in RCA: 441] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 06/19/2012] [Accepted: 07/02/2012] [Indexed: 01/27/2023]
Abstract
Increasingly vitamin D deficiency is being associated with a number of psychiatric conditions. In particular for disorders with a developmental basis, such as autistic spectrum disorder and schizophrenia the neurobiological plausibility of this association is strengthened by the preclinical data indicating vitamin D deficiency in early life affects neuronal differentiation, axonal connectivity, dopamine ontogeny and brain structure and function. More recently epidemiological associations have been made between low vitamin D and psychiatric disorders not typically associated with abnormalities in brain development such as depression and Alzheimer's disease. Once again the preclinical findings revealing that vitamin D can regulate catecholamine levels and protect against specific Alzheimer-like pathology increase the plausibility of this link. In this review we have attempted to integrate this clinical epidemiology with potential vitamin D-mediated basic mechanisms. Throughout the review we have highlighted areas where we think future research should focus.
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Affiliation(s)
- Darryl W Eyles
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD 4076, Australia.
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Batie S, Lee JH, Jama RA, Browder DO, Montano LA, Huynh CC, Marcus LM, Tsosie DG, Mohammed Z, Trang V, Marshall PA, Jurutka PW, Wagner CE. Synthesis and biological evaluation of halogenated curcumin analogs as potential nuclear receptor selective agonists. Bioorg Med Chem 2012; 21:693-702. [PMID: 23276449 DOI: 10.1016/j.bmc.2012.11.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 11/17/2012] [Accepted: 11/24/2012] [Indexed: 11/15/2022]
Abstract
This report describes the synthesis of analogs of curcumin, and their analysis in acting as nuclear receptor specific agonists. Curcumin (CM), a turmeric-derived bioactive polyphenol found in curry, has recently been identified as a ligand for the vitamin D receptor (VDR), and it is possible that CM exerts some of its bioeffects via direct binding to VDR and/or other proteins in the nuclear receptor superfamily. Using mammalian-two-hybrid (M2H) and vitamin D responsive element (VDRE) biological assay systems, we tested CM and 11 CM synthetic analogs for their ability to activate VDR signaling. The M2H assay revealed that RXR and VDR association was induced by CM and several of its analogs. VDRE-based assays demonstrated that pure curcumin and eight CM analogs activated transcription of a luciferase plasmid at levels approaching that of the endocrine 1,25 dihydroxyvitamin D(3) (1,25D) ligand in human colon cancer cells (HCT-116). Additional experiments were performed in HCT-116 utilizing various nuclear receptors and hormone responsive elements to determine the receptor specificity of curcumin binding. CM did not appear to activate transcription in a glucocorticoid responsive system. However, CM along with several analogs elicited transcriptional activation in retinoic acid and retinoid X receptor (RXR) responsive systems. M2H assays using RXR-RXR, VDR-SRC1 and VDR-DRIP revealed that CM and select analogs stimulate RXR homodimerization and VDR-coactivator interactions. These studies may lead to the discovery of novel curcumin analogs that activate nuclear receptors, including RXR, RAR and VDR, resulting in similar health benefits as those for vitamins A and D, such as lowering the risk of epithelial and colon cancers.
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Affiliation(s)
- Shane Batie
- School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University, 4701 W. Thunderbird Road, Glendale, AZ 85306, United States
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Marshall PA, Hernandez Z, Kaneko I, Widener T, Tabacaru C, Aguayo I, Jurutka PW. Discovery of novel vitamin D receptor interacting proteins that modulate 1,25-dihydroxyvitamin D3 signaling. J Steroid Biochem Mol Biol 2012; 132:147-59. [PMID: 22626544 PMCID: PMC3408799 DOI: 10.1016/j.jsbmb.2012.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 04/03/2012] [Accepted: 05/04/2012] [Indexed: 12/24/2022]
Abstract
The nuclear vitamin D receptor (VDR) modulates gene transcription in 1,25-dihydroxyvitamin D(3) (1,25D) target tissues such as kidney, intestine, and bone. VDR is also expressed in heart, and 1,25D deficiency may play a role in the acceleration of cardiovascular disease. Employing a yeast two-hybrid system and a human heart library, using both a 1,25D-independent and 1,25D-dependent screen, we discovered six candidate VDR interacting proteins (VIPs). These novel VIPs include CXXC5, FASTK, NR4A1, TPM2, MYL3 and XIRP1. Mammalian two-hybrid assays as well as GST pull-downs were used to confirm VIP-VDR interaction, and the combination of these two assays reveals that CXXC5, XIRP1, FASTK and NR4A1 interactions with VDR may be modulated by 1,25D. The functional effects of these VIPs on 1,25D-mediated gene expression were explored in transcriptional assays employing three separate and distinct 1,25D-responsive element (VDRE)-driven luciferase reporter genes in transfected Caco-2 and HEK-293 cells, and in a C2C12 myoblast line. FASTK and TPM2 activated expression in all cell line and promoter contexts, while CXXC5 and XIRP1 exhibited differing effects depending on the cell line and promoter employed, suggesting promoter and cell-specific effects of these unique VIPs on VDR signaling. Further evaluation of the interaction between CXXC5 and VDR revealed that CXXC5 acts in a dose-dependent manner to stimulate VDR-mediated transcription on select VDREs. Identification of novel heart VIPs and their influence on VDR activity may increase our understanding of how vitamin D impacts cardiac physiology and may facilitate development of VDR/VIP drug analogs to combat heart disease.
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Affiliation(s)
- Pamela A. Marshall
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
| | - Zachary Hernandez
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
| | - Ichiro Kaneko
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
- Department of Basic Medical Sciences, The University of Arizona, College of Medicine, Phoenix, AZ, 85004, United States
| | - Tim Widener
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
- Department of Basic Medical Sciences, The University of Arizona, College of Medicine, Phoenix, AZ, 85004, United States
| | - Christa Tabacaru
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
| | - Izayadeth Aguayo
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
| | - Peter W. Jurutka
- Division of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ 85306, United States
- Department of Basic Medical Sciences, The University of Arizona, College of Medicine, Phoenix, AZ, 85004, United States
- Corresponding author at: Division of Mathematical and Natural Sciences, Arizona State University, 4701 W. Thunderbird Rd., Glendale, AZ 85306, United States, Tel. +1 602 543 6087, fax: +1 602 543 6074. (P.W. Jurutka)
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Szyszka P, Zmijewski MA, Slominski AT. New vitamin D analogs as potential therapeutics in melanoma. Expert Rev Anticancer Ther 2012; 12:585-99. [PMID: 22594894 DOI: 10.1586/era.12.40] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Extensive evidence shows that the active form of vitamin D3--1α,25-dihydroxyvitamin D3--plays an important role in cancer prevention, has tumorostatic activity and may potentially be used in therapy for melanoma. Vitamin D3 and its analogs (secosteroids) exert multiple effects on cancer cells, including inhibition of cell growth and induction of differentiation. Activity of secosteroids depends on multiple cellular factors, including expression of the vitamin D receptor. Despite its endogenous origin, the key drawback for the use of pharmacologically effective doses of 1α,25-dihydroxyvitamin D3 is its hypercalcemic effect leading to profound toxicity. The solution may lie in properties of vitamin D3 analogs with modified side chains, which demonstrate low calcemic activity but conserve the anti-tumor properties. Noncalcemic vitamin D compounds were found to be potent in multiple studies that mandate further clinical testing. Finally, recent studies revealed alternative metabolic pathways for secosteroids and new targets in the cells, which opens up new therapeutic possibilities.
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Affiliation(s)
- Paulina Szyszka
- Department of Histology, Medical University of Gdansk, Gdansk, Poland
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Blomberg Jensen M. Vitamin D metabolism, sex hormones, and male reproductive function. Reproduction 2012; 144:135-52. [DOI: 10.1530/rep-12-0064] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The spectrum of vitamin D (VD)-mediated effects has expanded in recent years, and VD is now recognized as a versatile signaling molecule rather than being solely a regulator of bone health and calcium homeostasis. One of the recently identified target areas of VD is male reproductive function. The VD receptor (VDR) and the VD metabolizing enzyme expression studies documented the presence of this system in the testes, mature spermatozoa, and ejaculatory tract, suggesting that both systemic and local VD metabolism may influence male reproductive function. However, it is still debated which cell is the main VD target in the testis and to what extent VD is important for sex hormone production and function of spermatozoa. This review summarizes descriptive studies on testicular VD metabolism and spatial distribution of VDR and the VD metabolizing enzymes in the mammalian testes and discusses mechanistic and association studies conducted in animals and humans. The reviewed evidence suggests some effects of VD on estrogen and testosterone biosynthesis and implicates involvement of both systemic and local VD metabolism in the regulation of male fertility potential.
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Nemere I, Garbi N, Hammerling G, Hintze KJ. Role of the 1,25D3-MARRS receptor in the 1,25(OH)2D3-stimulated uptake of calcium and phosphate in intestinal cells. Steroids 2012; 77:897-902. [PMID: 22546984 DOI: 10.1016/j.steroids.2012.04.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 03/14/2012] [Accepted: 04/01/2012] [Indexed: 11/22/2022]
Abstract
We have used mice with a targeted knockout (KO) of the 1,25D(3)-MARRS receptor (ERp57/PDIA3) in intestine to study rapid responses to 1,25-dihydroxyvitamin D(3) [1,25D(3)] with regards to calcium or phosphate uptake. Western analyses indicated the presence of the 1,25D(3)-MARRS receptor in littermate (LM) mice, but not KO mice. Saturation analyses for [(3)H]1,25D(3) binding revealed comparable affinities for the hormone in lysates from female and male LM, but a reduced B(max) in females. Binding in lysates from KO mice was absent or severely reduced. Enterocytes from KO mice failed to respond to hormone with regard to either ion uptake, while cells from LM mice exhibited an increase in uptake. For calcium uptake, the protein kinase (PK) A pathway mediated the response to 1,25D(3). Enterocytes from LM mice responded to 1,25D(3) with enhanced PKA activity, while cells from KO mice did not, although both cell types responded to forskolin. Calcium transport in LM mice in vivo was greater than in KO mice. Cells from LM and KO mice had cell surface VDR; however, anti-VDR antibodies had no effect on ion uptake. Unlike chicks, the PKC pathway was not involved in phosphate uptake. As in chicks and rats, intestinal cells from adult male mice lost the ability to respond to 1,25D(3) with enhanced phosphate uptake, whereas in female mice, uptake in cells from adults was greater than that observed in young mice. Finally, when we tested phosphate uptake in vivo, we found that young female mice had a much greater rate of transport than young male mice.
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Affiliation(s)
- Ilka Nemere
- Department of Nutrition, Dietetics, and Food Sciences, Utah State University, Logan, UT, United States.
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Guo C, Rosoha E, Lowry MB, Borregaard N, Gombart AF. Curcumin induces human cathelicidin antimicrobial peptide gene expression through a vitamin D receptor-independent pathway. J Nutr Biochem 2012; 24:754-9. [PMID: 22841393 DOI: 10.1016/j.jnutbio.2012.04.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 03/09/2012] [Accepted: 04/03/2012] [Indexed: 01/08/2023]
Abstract
The vitamin D receptor (VDR) mediates the pleiotropic biologic effects of 1α,25 dihydroxy-vitamin D3. Recent in vitro studies suggested that curcumin and polyunsaturated fatty acids (PUFAs) also bind to VDR with low affinity. As potential ligands for the VDR, we hypothesized that curcumin and PUFAs would induce expression of known VDR target genes in cells. In this study, we tested whether these compounds regulated two important VDR target genes - human cathelicidin antimicrobial peptide (CAMP) and 1,25-dihydroxyvitamin D3 24-hydroxylase (CYP24A1) - in human monocytic cell line U937, colon cancer cell line HT-29 and keratinocyte cell line HaCaT. We demonstrated that PUFAs failed to induce CAMP or CYP24A1 mRNA expression in all three cell lines, but curcumin up-regulated CAMP mRNA and protein levels in U937 cells. Curcumin treatment induced CAMP promoter activity from a luciferase reporter construct lacking the VDR binding site and did not increase binding of the VDR to the CAMP promoter as determined by chromatin immunoprecipitation assays. These findings indicate that induction of CAMP by curcumin occurs through a vitamin D receptor-independent manner. We conclude that PUFAs and curcumin do not function as ligands for the VDR.
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Affiliation(s)
- Chunxiao Guo
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
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Nemere I, Garcia-Garbi N, Hämmerling GJ, Winger Q. Intestinal cell phosphate uptake and the targeted knockout of the 1,25D3-MARRS receptor/PDIA3/ERp57. Endocrinology 2012; 153:1609-15. [PMID: 22334724 DOI: 10.1210/en.2011-1850] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We have crossed ERp57(flx/flx) mice with commercially available mice expressing villin-driven cre-recombinase. Enterocytes isolated from 3- to 4-wk-old littermate (LM) male mice responded to 1,25-dihydroxyvitamin D₃ [1,25(OH)₂D₃] with enhanced phosphate uptake relative to corresponding controls within 1 min of addition, whereas in cells from targeted knockout (KO) mice, the response was severely blunted. Unlike chick enterocytes, mouse enterocytes did not respond to phorbol ester with enhanced phosphate uptake. However, forskolin, which does not stimulate phosphate uptake in chick intestinal cells, did so in enterocytes isolated from either young male LM or KO mice. Intestinal cells isolated from young female LM mice also responded to 1,25(OH)₂D₃ with enhanced phosphate uptake within 5 min of hormone addition, whereas cells from KO mice did not. Forskolin also stimulated phosphate uptake in enterocytes from young female KO or LM mice. As with intestinal cells from adult male chickens or rats, cells from adult (8 wk) male LM mice lost the ability to respond to 1,25(OH)₂D₃) with enhanced phosphate uptake. In contrast, intestinal cells from adult female LM mice did respond with enhanced phosphate uptake within 1 min of steroid hormone addition relative to corresponding controls, and the magnitude of the effect was greater than that observed in enterocytes of young females. Cells isolated from young or adult male or female LM mice failed to respond to 1,25(OH)₂D₃ with enhanced protein kinase C activity. Finally, we have previously reported that mouse enterocytes have cell surface vitamin D receptor; however preincubation of such cells with anti-vitamin D receptor antibodies demonstrated that the classical receptor is not involved in the rapid 1,25(OH)₂D₃-stimulated uptake of phosphate.
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Affiliation(s)
- Ilka Nemere
- Department of Nutrition, Dietetics, and Food Sciences, Utah State University, Logan, Utah 84322, USA.
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Sequeira VB, Rybchyn MS, Tongkao-On W, Gordon-Thomson C, Malloy PJ, Nemere I, Norman AW, Reeve VE, Halliday GM, Feldman D, Mason RS. The role of the vitamin D receptor and ERp57 in photoprotection by 1α,25-dihydroxyvitamin D3. Mol Endocrinol 2012; 26:574-82. [PMID: 22322599 DOI: 10.1210/me.2011-1161] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
UV radiation (UVR) is essential for formation of vitamin D(3), which can be hydroxylated locally in the skin to 1α,25-dihydroxyvitamin D(3) [1,25-(OH)(2)D(3)]. Recent studies implicate 1,25-(OH)(2)D(3) in reduction of UVR-induced DNA damage, particularly thymine dimers. There is evidence that photoprotection occurs through the steroid nongenomic pathway for 1,25-(OH)(2)D(3) action. In the current study, we tested the involvement of the classical vitamin D receptor (VDR) and the endoplasmic reticulum stress protein 57 (ERp57), in the mechanisms of photoprotection. The protective effects of 1,25-(OH)(2)D(3) against thymine dimers were abolished in fibroblasts from patients with hereditary vitamin D-resistant rickets that expressed no VDR protein, indicating that the VDR is essential for photoprotection. Photoprotection remained in hereditary vitamin D-resistant rickets fibroblasts expressing a VDR with a defective DNA-binding domain or a mutation in helix H1 of the classical ligand-binding domain, both defects resulting in a failure to mediate genomic responses, implicating nongenomic responses for photoprotection. Ab099, a neutralizing antibody to ERp57, and ERp57 small interfering RNA completely blocked protection against thymine dimers in normal fibroblasts. Co-IP studies showed that the VDR and ERp57 interact in nonnuclear extracts of fibroblasts. 1,25-(OH)(2)D(3) up-regulated expression of the tumor suppressor p53 in normal fibroblasts. This up-regulation of p53, however, was observed in all mutant fibroblasts, including those with no VDR, and with Ab099; therefore, VDR and ERp57 are not essential for p53 regulation. The data implicate the VDR and ERp57 as critical components for actions of 1,25-(OH)(2)D(3) against DNA damage, but the VDR does not require normal DNA binding or classical ligand binding to mediate photoprotection.
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Affiliation(s)
- Vanessa B Sequeira
- Department of Physiology, School of Medical Sciences and Bosch Institute, University of Sydney, Sydney, New South Wales, Australia 2006
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Willems HME, van den Heuvel EGHM, Carmeliet G, Schaafsma A, Klein-Nulend J, Bakker AD. VDR dependent and independent effects of 1,25-dihydroxyvitamin D3 on nitric oxide production by osteoblasts. Steroids 2012; 77:126-31. [PMID: 22093484 DOI: 10.1016/j.steroids.2011.10.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/30/2011] [Accepted: 10/31/2011] [Indexed: 01/01/2023]
Abstract
1,25-Dihydroxyvitamin D(3) (1,25(OH)(2)D(3)) strongly mediates bone mass. Mechanical stimulation also affects bone mass, partly via enhancing nitric oxide (NO) production by osteoblasts. We aimed to determine whether 1,25(OH)(2)D(3) affects NO production by osteoblasts in the presence or absence of mechanical stimulation. We hypothesised that 1,25(OH)(2)D(3) stimulates NO production via nuclear actions of the vitamin D receptor (VDR), which requires hours of incubation with 1,25(OH)(2)D(3) to occur. MC3T3-E1 osteoblasts and long-bone osteoblasts of adult wildtype and VDR(-/-) mice were pre-incubated for 24h with or without 1,25(OH)(2)D(3) (10(-13)-10(-9)M), followed by 30 min pulsating fluid flow (PFF; 0.7±0.3 Pa, 5 Hz) or static culture with or without 1,25(OH)(2)D(3). NO production and NO synthase (NOS) expression were quantified. 10(-11)M 1,25(OH)(2)D(3) for 24h, but not 30 min, stimulated NO production by MC3T3-E1 osteoblasts (eightfold). 1,25(OH)(2)D(3) for 24h increased inducible-NOS gene-expression (twofold), suggesting that 1,25(OH)(2)D(3) stimulated NO production via activation of NOS gene transcription. PFF rapidly increased NO production by MC3T3-E1 osteoblasts, wildtype osteoblasts, and VDR(-/-) osteoblasts. This PFF effect was abolished after incubation with 1,25(OH)(2)D(3) for 24h, or during PFF only. Our results suggest that 1,25(OH)(2)D(3) stimulates inducible-NOS expression and NO production by osteoblasts in the absence of mechanical stimulation, likely via genomic VDR action. In contrast, 1,25(OH)(2)D(3) may affect mechanical loading-induced NO production independent of genomic VDR action, since 1,25(OH)(2)D(3) diminished PFF-induced NO production in VDR(-/-) bone cells. In conclusion, 1,25(OH)(2)D(3) and mechanical loading interact at the level of mechanotransduction, whereby 1,25(OH)(2)D(3) seems to act independently of VDR genomic mechanism.
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Affiliation(s)
- Hubertine M E Willems
- Department of Oral Cell Biology, ACTA-University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands.
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