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https://www.readbyqxmd.com/read/29537313/predicted-effect-of-circadian-clock-modulation-of-nhe3-of-a-proximal-tubule-cell-on-sodium-transport
#1
Ning Wei, Michelle L Gumz, Anita T Layton
Major renal functions such as renal blood flow, glomerular filtration rate, and urinary excretion are known to exhibit circadian oscillations. However, the underlying mechanisms that govern these variations have yet to be fully elucidated. To better understand the impact of the circadian clock on renal solute and water transport, we have developed a computational model of the renal circadian clock, and coupled that model to an epithelial transport model of the proximal convoluted cell of the rat kidney. The activity of the Na$^+$-H$^+$ exchanger 3 (NHE3) is assumed to be regulated by changes in transcription of the NHE3 mRNA due to regulation by circadian clock proteins...
March 14, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29533925/circadian-clock-component-rev-erb%C3%AE-controls-homeostatic-regulation-of-pulmonary-inflammation
#2
Marie Pariollaud, Julie Gibbs, Thomas Hopwood, Sheila Brown, Nicola Begley, Ryan Vonslow, Toryn Poolman, Baoqiang Guo, Ben Saer, D Heulyn Jones, James P Tellam, Stefano Bresciani, Nicholas Co Tomkinson, Justyna Wojno-Picon, Anthony Wj Cooper, Dion A Daniels, Ryan P Trump, Daniel Grant, William Zuercher, Timothy M Willson, Andrew S MacDonald, Brian Bolognese, Patricia L Podolin, Yolanda Sanchez, Andrew Si Loudon, David W Ray
Recent studies reveal that airway epithelial cells are critical pulmonary circadian pacemaker cells, mediating rhythmic inflammatory responses. Using mouse models, we now identify the rhythmic circadian repressor REV-ERB as essential to the mechanism coupling the pulmonary clock to innate immunity, involving both myeloid, and bronchial epithelial cells in temporal gating and determining amplitude of response to inhaled endotoxin. Dual mutation of REV-ERBα and its paralog REV-ERBβ in bronchial epithelia further augmented inflammatory responses and chemokine activation, but also initiated a basal inflammatory state, revealing a critical homeostatic role for REV-ERB proteins in the suppression of the endogenous pro-inflammatory mechanism in un-challenged cells...
March 13, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29524779/transcriptomic-analyses-of-tributyltin-induced-sexual-dimorphisms-in-rare-minnow-gobiocypris-rarus-brains
#3
Ji-Liang Zhang, Min Liu, Chun-Nuan Zhang, Er-Chao Li, Ming-Zhen Fan, Mao-Xian Huang
The brain of fish displays sexual dimorphisms and exhibits remarkable sexual plasticity throughout their life span. Although reproductive toxicity of tributyltin (TBT) in fish is well documented in fish, it remains unknown whether TBT interrupts sexual dimorphisms of fish brains. In this work, brain transcriptomic profiles of rare minnow (Gobiocypris rarus) was characterized and sex-biased genes were identified using RNA sequencing. Functional annotation and enrichment analysis were performed to reveal differences of gene products and pathways between the brains of male and female fish...
March 7, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29508494/phosphorylation-of-n-terminal-regions-of-rev-erbs-regulates-their-intracellular-localization
#4
Yuki Ohba, Hajime Tei
Circadian rhythms are generated by the cyclic expression of several clock genes in mammals. The rhythmic expression of these genes is maintained by multiple transcriptional-translational feedback loops in addition to the posttranslational regulation of the clock proteins. Transcription of one of the key clock genes, Bmal1, which exhibits a nocturnal transcriptional rhythm in the suprachiasmatic nucleus of the mouse brain, is induced and repressed by RORs and REV-ERBs, respectively. Thus, the dynamics of the RORs and REV-ERBs expression, modification, subcellular localization and degradation of these transcriptional factors are critical for the transcriptional regulation of Bmal1...
March 6, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29474860/pharmacological-targeting-of-the-mammalian-clock-reveals-a-novel-analgesic-for-osteoarthritis-induced-pain
#5
Vaskar Das, Ranjan Kc, Xin Li, Disha Varma, Sujun Qiu, Jeffrey S Kroin, Christopher B Forsyth, Ali Keshavarzian, Andre J van Wijnen, Thomas J Park, Gary S Stein, Insug O-Sullivan, Thomas P Burris, Hee-Jeong Im
Environmental disruption of the circadian rhythm is linked with increased pain due to osteoarthritis (OA). We aimed to characterize the role of the clock gene in OA-induced pain more systemically using both genetic and pharmacological approaches. Genetically modified mice, (bmal1f/fNav1.8CreERT mice), generated by deleting the critical clock gene, bmal1, from Nav1.8 sensory neurons, were resistant to the development of mechanical hyperalgesia associated with OA induced by partial medial meniscectomy (PMM) of the knee...
February 20, 2018: Gene
https://www.readbyqxmd.com/read/29401617/rev-erbs-agonism-suppresses-osteoclastogenesis-and-prevents-ovariectomy-induced-bone-loss-partially-via-fabp4-upregulation
#6
Chao Song, Peng Tan, Zheng Zhang, Wei Wu, Yonghui Dong, Liming Zhao, Huiyong Liu, Hanfeng Guan, Feng Li
REV-ERBs (REV-ERBα and REV-ERBβ) are transcription repressors and circadian regulators. Previous investigations have shown that REV-ERBs repress the expression of target genes, including MMP9 and CX3CR1, in macrophages. Because MMP9 and CX3CR1 reportedly participate in receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis, we inferred that REV-ERBs might play a role in osteoclastogenesis. In the present study, we found that the REV-ERBα level decreased significantly during RANKL-induced osteoclast differentiation from primary bone marrow-derived macrophages (BMMs)...
January 22, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29365732/role-of-the-nuclear-receptor-rev-erb-alpha-in-the-development-of-vascular-calcification
#7
Mathilde Zecchin, Benoit Pourcet, Lise Ferri, Jonathan Vanhoutte, Stéphane Delhaye, Bart Staels, Hélène Duez
No abstract text is available yet for this article.
August 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29355503/rev-erb%C3%AE-is-required-to-maintain-normal-wakefulness-and-the-wake-inducing-effect-of-dual-rev-erb-agonist-sr9009
#8
Ariadna Amador, Theodore M Kamenecka, Laura A Solt, Thomas P Burris
Circadian signaling regulates and synchronizes physiological and behavioral processes, such as feeding, metabolism, and sleep cycles. The endogenous molecular machinery that regulates circadian activities is located in the suprachiasmatic nucleus of the hypothalamus. The REV-ERBs are transcription factors that play key roles in the regulation of the circadian clock and metabolism. Using pharmacological methods, we recently demonstrated the involvement of the REV-ERBs in sleep architecture. Another group reported a delayed response to sleep deprivation and altered sleep cycles in REV-ERBα null mice, indicating a role of REV-ERBα in sleep...
April 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29352049/rev-erb-agonists-block-autophagy-in-cancer-cells
#9
(no author information available yet)
Disruption of the circadian clock components reduces cancer cell viability in vitro and in vivo .
March 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29331507/adropin-an-endocrine-link-between-the-biological-clock-and-cholesterol-homeostasis
#10
Sarbani Ghoshal, Joseph R Stevens, Cyrielle Billon, Clemence Girardet, Sadichha Sitaula, Arthur S Leon, D C Rao, James S Skinner, Tuomo Rankinen, Claude Bouchard, Marinelle V Nuñez, Kimber L Stanhope, Deborah A Howatt, Alan Daugherty, Jinsong Zhang, Matthew Schuelke, Edward P Weiss, Alisha R Coffey, Brian J Bennett, Praveen Sethupathy, Thomas P Burris, Peter J Havel, Andrew A Butler
OBJECTIVE: Identify determinants of plasma adropin concentrations, a secreted peptide translated from the Energy Homeostasis Associated (ENHO) gene linked to metabolic control and vascular function. METHODS: Associations between plasma adropin concentrations, demographics (sex, age, BMI) and circulating biomarkers of lipid and glucose metabolism were assessed in plasma obtained after an overnight fast in humans. The regulation of adropin expression was then assessed in silico, in cultured human cells, and in animal models...
February 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29320480/pharmacological-activation-of-rev-erbs-is-lethal-in-cancer-and-oncogene-induced-senescence
#11
Gabriele Sulli, Amy Rommel, Xiaojie Wang, Matthew J Kolar, Francesca Puca, Alan Saghatelian, Maksim V Plikus, Inder M Verma, Satchidananda Panda
The circadian clock imposes daily rhythms in cell proliferation, metabolism, inflammation and DNA damage response. Perturbations of these processes are hallmarks of cancer and chronic circadian rhythm disruption predisposes individuals to tumour development. This raises the hypothesis that pharmacological modulation of the circadian machinery may be an effective therapeutic strategy for combating cancer. REV-ERBs, the nuclear hormone receptors REV-ERBα (also known as NR1D1) and REV-ERBβ (also known as NR1D2), are essential components of the circadian clock...
January 18, 2018: Nature
https://www.readbyqxmd.com/read/29232411/rev-erb-agonist-improves-adverse-cardiac-remodeling-and-survival-in-myocardial-infarction-through-an-anti-inflammatory-mechanism
#12
Endin Nokik Stujanna, Nobuyuki Murakoshi, Kazuko Tajiri, DongZhu Xu, Taizo Kimura, Rujie Qin, Duo Feng, Saori Yonebayashi, Yukino Ogura, Fumi Yamagami, Akira Sato, Akihiko Nogami, Kazutaka Aonuma
Rev-erb α, known as nuclear receptor 1D1 (NR1D1), regulates circadian rhythm, modulates glucose and lipid metabolism, and inflammatory response. However, little is known about the effect of Rev-erb agonist on the progression of myocardial infarction (MI) and heart failure. To investigate it, wild-type male mice underwent sham-operation or permanent ligation of the left anterior descending coronary artery to create MI model. Rev-erb agonist SR9009 (100 mg/kg/day) or vehicle was intraperitoneally administered...
2017: PloS One
https://www.readbyqxmd.com/read/29215066/pharmacological-inhibition-of-rev-erb-stimulates-differentiation-inhibits-turnover-and-reduces-fibrosis-in-dystrophic-muscle
#13
Ryan D Welch, Cyrielle Billon, Aurore-Cecile Valfort, Thomas P Burris, Colin A Flaveny
Duchenne muscular dystrophy (DMD) is a debilitating X-linked disorder that is fatal. DMD patients lack the expression of the structural protein dystrophin caused by mutations within the DMD gene. The absence of functional dystrophin protein results in excessive damage from normal muscle use due to the compromised structural integrity of the dystrophin associated glycoprotein complex. As a result, DMD patients exhibit ongoing cycles of muscle destruction and regeneration that promote inflammation, fibrosis, mitochondrial dysfunction, satellite cell (SC) exhaustion and loss of skeletal and cardiac muscle function...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28990415/redox-regulation-of-heme-oxygenase-2-and-the-transcription-factor-rev-erb-through-heme-regulatory-motifs
#14
Angela S Fleischhacker, Eric L Carter, Stephen W Ragsdale
SIGNIFICANCE: Heme binds to and serves as a cofactor for a myriad of proteins that are involved in diverse biological processes. Hemoproteins also exhibit varying modes of heme binding, suggesting that the protein environment contributes to the functional versatility of this prosthetic group. The subject of this review is a subset of hemoproteins that contain at least one heme regulatory motif (HRM), which is a short sequence containing a Cys-Pro core that, in many cases, binds heme with the Cys acting as an axial ligand...
November 14, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28878135/rev-erb%C3%AE-ameliorates-heart-failure-through-transcription-repression
#15
Lilei Zhang, Rongli Zhang, Chih-Liang Tien, Ricky E Chan, Keiki Sugi, Chen Fu, Austin C Griffin, Yuyan Shen, Thomas P Burris, Xudong Liao, Mukesh K Jain
A cure for heart failure remains a major unmet clinical need, and current therapies targeting neurohomonal and hemodynamic regulation have limited efficacy. The pathological remodeling of the myocardium has been associated with a stereotypical gene expression program, which had long been viewed as the consequence and not the driver of the disease until very recently. Despite the advance, there is no therapy available to reverse the already committed gene program. Here, we demonstrate that transcriptional repressor REV-ERB binds near driver transcription factors across the genome...
September 7, 2017: JCI Insight
https://www.readbyqxmd.com/read/28851928/calorie-restriction-effects-on-circadian-rhythms-in-gene-expression-are-sex-dependent
#16
Artem A Astafev, Sonal A Patel, Roman V Kondratov
The rhythms in the expression of circadian clock genes are affected by calorie restriction (CR), a dietary paradigm known to increase lifespan. Many physiological effects of CR differ between males and females; here we investigated if the sex of animals affects the CR induced changes in the circadian rhythms. The liver expression of some circadian clock genes such as Bmal1 and three Periods (Per1, Per2 and Per3) and the effect of CR on the expression of these genes were sex independent, while the expression of Rev-Erb alpha, Ror gamma and both Cryptochome (Cry1 and Cry2) genes was different between males and females...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28804711/annotation-of-the-nuclear-receptors-in-an-estuarine-fish-species-fundulus-heteroclitus
#17
William S Baldwin, W Tyler Boswell, Gautam Ginjupalli, Elizabeth J Litoff
The nuclear receptors (NRs) are ligand-dependent transcription factors that respond to various internal as well as external cues such as nutrients, pheromones, and steroid hormones that play crucial roles in regulation and maintenance of homeostasis and orchestrating the physiological and stress responses of an organism. We annotated the Fundulus heteroclitus (mummichog; Atlantic killifish) nuclear receptors. Mummichog are a non-migratory, estuarine fish with a limited home range often used in environmental research as a field model for studying ecological and evolutionary responses to variable environmental conditions such as salinity, oxygen, temperature, pH, and toxic compounds because of their hardiness...
2017: Nuclear Receptor Research
https://www.readbyqxmd.com/read/28712038/binding-mode-prediction-and-md-mmpbsa-based-free-energy-ranking-for-agonists-of-rev-erb%C3%AE-ncor
#18
Yvonne Westermaier, Sergio Ruiz-Carmona, Isabelle Theret, Françoise Perron-Sierra, Guillaume Poissonnet, Catherine Dacquet, Jean A Boutin, Pierre Ducrot, Xavier Barril
The knowledge of the free energy of binding of small molecules to a macromolecular target is crucial in drug design as is the ability to predict the functional consequences of binding. We highlight how a molecular dynamics (MD)-based approach can be used to predict the free energy of small molecules, and to provide priorities for the synthesis and the validation via in vitro tests. Here, we study the dynamics and energetics of the nuclear receptor REV-ERBα with its co-repressor NCoR and 35 novel agonists. Our in silico approach combines molecular docking, molecular dynamics (MD), solvent-accessible surface area (SASA) and molecular mechanics poisson boltzmann surface area (MMPBSA) calculations...
August 2017: Journal of Computer-aided Molecular Design
https://www.readbyqxmd.com/read/28702326/rev-erb-co-regulates-muscle-regeneration-via-tethered-interaction-with-the-nf-y-cistrome
#19
Ryan D Welch, Chun Guo, Monideepa Sengupta, Katherine J Carpenter, Natalie A Stephens, Stacy A Arnett, Marvin J Meyers, Lauren M Sparks, Steven R Smith, Jinsong Zhang, Thomas P Burris, Colin A Flaveny
OBJECTIVE: The loss of skeletal muscle mass and strength are a central feature of traumatic injury and degenerative myopathies. Unfortunately, pharmacological interventions typically fail to stem the long-term decline in quality of life. Reduced Rev-Erb-mediated gene suppression in cultured C2C12 myoblasts has been shown to stimulate myoblast differentiation. Yet the mechanisms that allow Rev-Erb to pleiotropically inhibit muscle differentiation are not well understood. In this study, we sought to elucidate the role of Rev-Erb in the regulation of muscle differentiation and regeneration in vivo...
July 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28674930/trojan-horse-strategy-for-non-invasive-interference-of-clock-gene-in-the-oyster-crassostrea-gigas
#20
Laura Payton, Mickael Perrigault, Jean-Paul Bourdineaud, Anjara Marcel, Jean-Charles Massabuau, Damien Tran
RNA interference is a powerful method to inhibit specific gene expression. Recently, silencing target genes by feeding has been successfully carried out in nematodes, insects, and small aquatic organisms. A non-invasive feeding-based RNA interference is reported here for the first time in a mollusk bivalve, the pacific oyster Crassostrea gigas. In this Trojan horse strategy, the unicellular alga Heterocapsa triquetra is the food supply used as a vector to feed oysters with Escherichia coli strain HT115 engineered to express the double-stranded RNA targeting gene...
August 2017: Marine Biotechnology
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