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Vitamin D AND transcription factor

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https://www.readbyqxmd.com/read/28210075/pancreatic-stellate-cell-pandora-s-box-for-pancreatic-disease-biology
#1
REVIEW
Ratnakar R Bynigeri, Aparna Jakkampudi, Ramaiah Jangala, Chivukula Subramanyam, Mitnala Sasikala, G Venkat Rao, D Nageshwar Reddy, Rupjyoti Talukdar
Pancreatic stellate cells (PSCs) were identified in the early 1980s, but received much attention after 1998 when the methods to isolate and culture them from murine and human sources were developed. PSCs contribute to a small proportion of all pancreatic cells under physiological condition, but are essential for maintaining the normal pancreatic architecture. Quiescent PSCs are characterized by the presence of vitamin A laden lipid droplets. Upon PSC activation, these perinuclear lipid droplets disappear from the cytosol, attain a myofibroblast like phenotype and expresses the activation marker, alpha smooth muscle actin...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28166722/integration-of-vdr-genome-wide-binding-and-gwas-genetic-variation-data-reveals-co-occurrence-of-vdr-and-nf-%C3%AE%C2%BAb-binding-that-is-linked-to-immune-phenotypes
#2
Prashant K Singh, Patrick R van den Berg, Mark D Long, Angie Vreugdenhil, Laurie Grieshober, Heather M Ochs-Balcom, Jianmin Wang, Sylvie Delcambre, Sami Heikkinen, Carsten Carlberg, Moray J Campbell, Lara E Sucheston-Campbell
BACKGROUND: The nuclear hormone receptor superfamily acts as a genomic sensor of diverse signals. Their actions are often intertwined with other transcription factors. Nuclear hormone receptors are targets for many therapeutic drugs, and include the vitamin D receptor (VDR). VDR signaling is pleotropic, being implicated in calcaemic function, antibacterial actions, growth control, immunomodulation and anti-cancer actions. Specifically, we hypothesized that the biologically significant relationships between the VDR transcriptome and phenotype-associated biology could be discovered by integrating the known VDR transcription factor binding sites and all published trait- and disease-associated SNPs...
February 6, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28159673/ripk1-binds-to-vitamin-d-receptor-and-decreases-vitamin-d-induced-growth-suppression
#3
Waise Quarni, Panida Lungchukiet, Anfernee Tse, Pei Wang, Yuefeng Sun, Ravi Kasiappan, Jheng-Yu Wu, Xiaohong Zhang, Wenlong Bai
Receptor interacting protein kinase 1 (RIPK1) is an enzyme acting downstream of tumor necrosis factor alpha to control cell survival and death. RIPK1 expression has been reported to cause drug resistance in cancer cells, but so far, no published studies have investigated the role of RIPK1 in vitamin D signaling. In the present study, we investigated whether RIPK1 plays any roles in 1,25-dihydroxyvitamin D3 (1,25D3)-induced growth suppression. In our studies, RIPK1 decreased the transcriptional activity of vitamin D receptor (VDR) in luciferase reporter assays independent of its kinase activity, suggesting a negative role of RIPK1 in 1,25D3 action...
February 1, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28132894/vitamin-d-metabolite-25-hydroxyvitamin-d-regulates-lipid-metabolism-by-inducing-degradation-of-srebp-scap
#4
Lisa Asano, Mizuki Watanabe, Yuta Ryoden, Kousuke Usuda, Takuya Yamaguchi, Bilon Khambu, Megumi Takashima, Shin-Ichi Sato, Juro Sakai, Kazuo Nagasawa, Motonari Uesugi
Sterol regulatory element-binding proteins (SREBPs) are transcription factors that control lipid homeostasis. SREBP activation is regulated by a negative feedback loop in which sterols bind to SREBP cleavage-activating protein (SCAP), an escort protein essential for SREBP activation, or to insulin-induced genes (Insigs) (endoplasmic reticulum [ER] anchor proteins), sequestering the SREBP-SCAP-Insig complex in the ER. We screened a chemical library of endogenous molecules and identified 25-hydroxyvitamin D (25OHD) as an inhibitor of SREBP activation...
January 23, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28130827/advanced-glycation-end-products-stimulate-gene-expression-of-fibroblast-growth-factor-23
#5
Ludmilla Bär, Kristin Wächter, Nicole Wege, Alexander Navarrete Santos, Andreas Simm, Michael Föller
SCOPE: Osteoblasts produce fibroblast growth factor 23 (FGF23), a hormone inhibiting renal phosphate reabsorption and the formation of biologically active vitamin D, calcitriol. FGF23-deficient mice age rapidly and develop age-associated diseases at least in part due to massive calcification. Elevated FGF23 serum levels are detected in patients suffering from acute and chronic renal, cardiovascular, inflammatory, and metabolic diseases. Advanced glycation end products (AGEs) are sugar-modified proteins, nucleic acid, and lipids which contribute to these disorders...
January 28, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28130181/differential-response-of-bone-and-kidney-to-acei-in-db-db-mice-a-potential-effect-of-captopril-on-accelerating-bone-loss
#6
Yan Zhang, Xiao-Li Li, Nan-Nan Sha, Bing Shu, Yong-Jian Zhao, Xin-Luan Wang, Hui-Hui Xiao, Qi Shi, Man-Sau Wong, Yong-Jun Wang
The components of renin-angiotensin system (RAS) are expressed in the kidney and bone. Kidney disease and bone injury are common complications associated with diabetes. This study aimed to investigate the effects of an angiotensin-converting enzyme inhibitor, captopril, on the kidney and bone of db/db mice. The db/db mice were orally administered by gavage with captopril for 8weeks with db/+ mice as the non-diabetic control. Serum and urine biochemistries were determined by standard colorimetric methods or ELISA...
January 24, 2017: Bone
https://www.readbyqxmd.com/read/28120456/endothelin-1-mediates-natriuresis-but-not-polyuria-during-vitamin-d-induced-acute-hypercalcemia
#7
Natsuko Tokonami, Lydie Cheval, Isabelle Monnay, Guillaume Meurice, Johaness Loffing, Eric Feraille, Pascal Houillier
Acute hypercalcemia increases urinary sodium and water excretion; however, the underlying molecular mechanism remains unclear. As vitamin D-induced hypercalcemia increases the renal expression of endothelin (ET)-1, we hypothesized that ET-1 mediates the effects of hypercalcemia on renal sodium and water handling. Hypercalcemia was induced in 8 week-old, PTH-supplemented, male mice by oral administration of dihydrotachysterol (DHT) for 3 days. DHT-treated mice became hypercalcemic and displayed increased urinary water and sodium excretion compared to controls...
January 24, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28115699/similarities-and-differences-in-the-transcriptional-control-of-expression-of-the-mouse-tslp-gene-in-skin-epidermis-and-intestinal-epithelium
#8
Krishna Priya Ganti, Atish Mukherji, Milan Surjit, Mei Li, Pierre Chambon
We previously reported that selective ablation of the nuclear receptors retinoid X receptor (RXR)-α and RXR-β in mouse epidermal keratinocytes (RXR-αβ(ep-/-)) or a topical application of active vitamin D3 (VD3) and/or all-trans retinoic acid (RA) on wild-type mouse skin induces a human atopic dermatitis-like phenotype that is triggered by an increased expression of the thymic stromal lymphopoietin (TSLP) proinflammatory cytokine. We demonstrate here that in epidermal keratinocytes, unliganded heterodimers of vitamin D receptor (VDR)/RXR-α and retinoic acid receptor-γ (RAR-γ)/RXR-β are bound as repressing complexes to their cognate DNA-binding sequence(s) (DBS) in the TSLP promoter regulatory region...
February 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28098047/vitamin-a-deficiency-suppresses-fish-immune-function-with-differences-in-different-intestinal-segments-the-role-of-transcriptional-factor-nf-%C3%AE%C2%BAb-and-p38-mitogen-activated-protein-kinase-signalling-pathways
#9
Li Zhang, Lin Feng, Wei-Dan Jiang, Yang Liu, Pei Wu, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Xiao-Qiu Zhou
The present study investigated the effects of dietary vitamin A on immune function in the proximal intestine (PI), mid intestine (MI) and distal intestine (DI) of young grass carp (Ctenopharyngodon idella). Fish were fed graded levels of dietary vitamin A for 10 weeks, and then a challenge test using an injection of Aeromonas hydrophila was conducted for 14 d. The results showed that, compared with the optimum vitamin A level, vitamin A deficiency significantly decreased fish growth performance, increased enteritis morbidity, decreased intestinal innate humoral immune response and aggravated intestinal inflammation...
January 18, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28094339/massive-effect-on-lncrnas-in-human-monocytes-during-fungal-and-bacterial-infections-and-in-response-to-vitamins-a-and-d
#10
Konstantin Riege, Martin Hölzer, Tilman E Klassert, Emanuel Barth, Julia Bräuer, Maximilian Collatz, Franziska Hufsky, Nelly Mostajo, Magdalena Stock, Bertram Vogel, Hortense Slevogt, Manja Marz
Mycoses induced by C.albicans or A.fumigatus can cause important host damage either by deficient or exaggerated immune response. Regulation of chemokine and cytokine signaling plays a crucial role for an adequate inflammation, which can be modulated by vitamins A and D. Non-coding RNAs (ncRNAs) as transcription factors or cis-acting antisense RNAs are known to be involved in gene regulation. However, the processes during fungal infections and treatment with vitamins in terms of therapeutic impact are unknown...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089917/micrornas-and-dicer1-are-regulated-by-1-25-dihydroxyvitamin-d-in-prostate-stroma
#11
Shweta Dambal, Angeline A Giangreco, Andres M Acosta, Andrew Fairchild, Zachary Richards, Ryan Deaton, Dennis Wagner, Reinhold Vieth, Peter H Gann, Andre Kajdacsy-Balla, Theodorus Van der Kwast, Larisa Nonn
Vitamin D deficiency increases the risk of lethal prostate adenocarcinomas (PCa) and the majority of older men are deficient. Although PCa arises from the epithelium, the surrounding stroma has hormonal regulatory control over the epithelium and contributes to carcinogenesis. Herein, we describe regulation of microRNAs (miRs) by the active hormone dihydroxyvitamin D (1,25(OH)2D) in human prostate stroma. 1,25(OH)2D binds the vitamin D receptor (VDR) transcription factor to regulate gene expression, including miRs, which have emerged as potent regulators of protein expression...
March 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28068558/targeted-next-generation-sequencing-of-the-entire-vitamin-d-receptor-gene-reveals-polymorphisms-correlated-with-vitamin-d-deficiency-among-older-filipino-women-with-and-without-fragility-fracture
#12
Mark Pretzel Zumaraga, Paul Julius Medina, Juan Miguel Recto, Lauro Abrahan, Edelyn Azurin, Celeste C Tanchoco, Cecilia A Jimeno, Cynthia Palmes-Saloma
This study aimed to discover genetic variants in the entire 101 kB vitamin D receptor (VDR) gene for vitamin D deficiency in a group of postmenopausal Filipino women using targeted next generation sequencing (TNGS) approach in a case-control study design. A total of 50 women with and without osteoporotic fracture seen at the Philippine Orthopedic Center were included. Blood samples were collected for determination of serum vitamin D, calcium, phosphorus, glucose, blood urea nitrogen, creatinine, aspartate aminotransferase, alanine aminotransferase and as primary source for targeted VDR gene sequencing using the Ion Torrent Personal Genome Machine...
December 21, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28061456/vitamin-d-receptor-polymorphisms-or-serum-levels-as-key-drivers-of-breast-cancer-development-the-question-of-the-vitamin-d-pathway
#13
Dino Amadori, Patrizia Serra, Nestory Masalu, Akwilina Pangan, Emanuela Scarpi, Aloyce Maria Bugingo, Deogratias Katabalo, Toni Ibrahim, Alberto Bongiovanni, Giacomo Miserocchi, Chiara Spadazzi, Chiara Liverani, Valentina Turri, Rosanna Tedaldi, Laura Mercatali
As total vitamin D levels are often lower in black than in white Americans, the former are frequently classified as vitamin D-deficient. To fully understand African vitamin D (25(OH)D) status, other factors should be considered, e.g. vitamin D blood carrier, vitamin D-binding protein (DBP), vitamin D receptor (VDR) and DBP polymorphisms. A prospective study on an indigenous black Tanzanian and a Caucasian Italian population was performed on 50 healthy donors from both populations and 35 Caucasian and 18 African breast cancer patients...
January 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28054069/challenge-and-perspective-the-relevance-of-ultraviolet-uv-radiation-and-the-vitamin-d-endocrine-system-vdes-for-psoriasis-and-other-inflammatory-skin-diseases
#14
Jörg Reichrath, Roman Saternus, Thomas Vogt
During evolution, the ability of many organisms to synthesize vitamin D photochemically represented, and still represents, a major driving factor for the development of life on earth. In humans because not more than 10-20% of the requirement of vitamin D can be satisfied by the diet (under most living conditions in the US and Europe), the remaining 80-90% need to be photochemically synthesized in the skin through the action of solar or artificial ultraviolet-B (UV-B) radiation. The skin is a key organ of the human body's vitamin D endocrine system (VDES), representing both the site of vitamin D synthesis and a target tissue for biologically active vitamin D metabolites...
January 5, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28034764/the-concept-of-the-personal-vitamin-d-response-index
#15
REVIEW
Carsten Carlberg, Afrozul Haq
Humans are able to synthesize vitamin D3 in their skin when exposed to UV-B, but seasonal variations, textile coverage and predominant indoor activities often make supplementation with the compound necessary. There is some dispute on the desired vitamin D status, measured via the serum concentration of the most stable vitamin D3 metabolite, 25-hydroxyvitamin D3, and the respective recommended daily supplementation. A possible answer may be provided by the concept of the personal vitamin D response index describing the efficiency of the molecular response to supplementation with vitamin D...
December 26, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28027912/integrative-genomic-approaches-to-dissect-clinically-significant-relationships-between-the-vdr-cistrome-and-gene-expression-in-primary-colon-cancer
#16
REVIEW
Mark D Long, Moray J Campbell
Recently, we undertook a pan-cancer analyses of the nuclear hormone receptor (NR) superfamily in The Cancer Genome Atlas (TCGA), and revealed that the vitamin D receptor (NR1I1/VDR) was commonly and significantly down-regulated specifically in colon adenocarcinoma cohort (COAD). To examine the consequence of down-regulated VDR expression we re-analyzed VDR chromatin immunoprecipitation sequencing (ChIP-Seq) data from LS180 colon cancer cells (GSE31939). This analysis identified 1809 loci that displayed significant (p...
December 24, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28025175/vitamin-d-deficiency-and-the-pathogenesis-of-crohn-s-disease
#17
REVIEW
John H White
Vitamin D has emerged as a key regulator of innate immune responses to pathogen threat. The hormonal form of vitamin D signals through a nuclear receptor transcription factor and regulates gene transcription. Several papers have shown that vitamin D signaling is active both upstream and downstream of pattern recognition receptors, vanguards of innate immune responses. Crohn's disease (CD) is a relapsing-recurring inflammatory bowel disease (IBD) that arises from dysregulated intestinal innate immunity. Indeed, genetic studies have identified several CD susceptibility markers linked to mechanisms of innate immune responses to infection...
December 23, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27998003/vitamin-d-contributes-to-mast-cell-stabilization
#18
Zhi-Qiang Liu, Xiao-Xi Li, Shu-Qi Qiu, Yong Yu, Mao-Gang Li, Li-Tao Yang, Lin-Jing Li, Shuai Wang, Peng-Yuan Zheng, Zhi-Gang Liu, Ping-Chang Yang
BACKGROUND AND AIMS: Mast cells are the major effector cells in allergic disorders and many other informatory disorders. The mechanism of mast cell stabilization is not fully understood. Cumulative reports indicate that vitamin D (VitD) contributes to the homeostasis in the body. This study tests a hypothesis that VitD is required in the maintenance of the stability of mast cells. METHODS: The stability of mast cell lines, HMC1 cells, RBL-2H3 cells, p815 cells and mouse bone marrow-derived mast cells (BMMC) was tested in the presence or absence of VitD3...
December 20, 2016: Allergy
https://www.readbyqxmd.com/read/27893751/25-hydroxy-and-1%C3%AE-25-dihydroxycholecalciferol-have-greater-potencies-than-25-hydroxy-and-1%C3%AE-25-dihydroxyergocalciferol-in-modulating-cultured-human-and-mouse-osteoblast-activities
#19
Allahdad Zarei, Philippa A Hulley, Afsie Sabokbar, M Kassim Javaid, Alireza Morovat
Despite differences in the phamacokinetics of 25-hydroxycholecalciferol (25(OH)D3) and 25-hydroxyergocalciferol (25(OH)D2) in man, the effects of these and their 1α-hydroxylated forms (1,25(OH)2D3 and 1,25(OH)2D2) on cellular activity of vitamin D-responsive cells have hardly been compared. We studied differences in the effects of these metabolites on cell number, gene transcription, protein expression and mineralisation of cultured human bone marrow-derived stromal cells (hBMSC) and rapidly mineralising mouse 2T3 osteoblasts...
2016: PloS One
https://www.readbyqxmd.com/read/27860527/roles-of-ppar-transcription-factors-in-the-energetic-metabolic-switch-occurring-during-adult-neurogenesis
#20
E Di Giacomo, E Benedetti, L Cristiano, A Antonosante, M d'Angelo, A Fidoamore, D Barone, S Moreno, R Ippoliti, M P Cerù, A Giordano, A Cimini
PPARs are a class of ligand-activated transcription factors belonging to the superfamily of receptors for steroid and thyroid hormones, retinoids and vitamin D that control the expression of a large number of genes involved in lipid and carbohydrate metabolism and in the regulation of cell proliferation, differentiation and death. The role of PPARs in the CNS has been primarily associated with lipid and glucose metabolism; however, these receptors are also implicated in neural cell differentiation and death, as well as neuronal maturation...
January 2, 2017: Cell Cycle
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