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https://www.readbyqxmd.com/read/28063919/proteomic-analysis-of-the-protective-effects-of-aqueous-bark-extract-of-terminalia-arjuna-roxb-on-isoproterenol-induced-cardiac-hypertrophy-in-rats
#1
Santosh Kumar, Md Jahangir Alam, Pankaj Prabhakar, Sayeed Ahmad, Subir K Maulik, Manish Sharma, Shyamal K Goswami
ETHNOPHARMACOLOGICAL RELEVANCE: Aqueous bark extract of Terminalia arjuna (TA) has been in use as an ethnomedicine for cardiovascular ailments in the Indian subcontinent for centuries. Studies using hemodynamic, ROS scavenging and anti-inflammatory parameters in animal models have shown its anti-atherogenic, hypotensive, inotropic, anti-inflammatory effects. However, details analysis on its effects on established molecular and cell biological markers are a prerequisite for its wider acceptance to the medical community...
January 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28055234/scriptaid-upregulates-expression-of-development-related-genes-inhibits-apoptosis-and-improves-the-development-of-somatic-cell-nuclear-transfer-mini-pig-embryos
#2
Li Zhang, Yuemeng Huang, Yanjun Wu, Jinglei Si, Yanna Huang, Qinyang Jiang, Ganqiu Lan, Yafen Guo, Hesheng Jiang
The present study was undertaken to investigate the mechanisms by which Scriptaid treatment improves the developmental competence of somatic cell nuclear transfer (SCNT) mini-pig embryos in vitro. We found that treatment with 500 nmol/L Scriptaid for 15 hours significantly improved the development of mini-pig SCNT embryos. Compared with the control group, the blastocyst rate was higher (18.3% vs. 10.7%; p < 0.05). The acetylation level on H3K14 of the Scriptaid-treated group was higher compared with the control group in SCNT embryos at two-cell, four-cell, and blastocyst stages (p < 0...
January 5, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28045116/comparative-analysis-of-dna-methylome-and-transcriptome-of-skeletal-muscle-in-lean-obese-and-mini-type-pigs
#3
Yalan Yang, Guoming Liang, Guanglin Niu, Yuanyuan Zhang, Rong Zhou, Yanfang Wang, Yulian Mu, Zhonglin Tang, Kui Li
DNA methylation plays a pivotal role in biological processes by affecting gene expression. However, how DNA methylation mediates phenotype difference of skeletal muscle between lean-, obese-, and mini-type pigs remains unclear. We systematically carried out comparative analysis of skeletal muscle by integrating analysis of genome-wide DNA methylation, mRNA, lncRNA and miRNA profiles in three different pig breeds (obese-type Tongcheng, lean-type Landrace, and mini-type Wuzhishan pigs). We found that the differentially methylated genes (DMGs) were significantly associated with lipid metabolism, oxidative stress and muscle development...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28035339/emerging-roles-for-histone-deacetylases-in-age-related-muscle-atrophy
#4
REVIEW
Michael E Walsh, Holly Van Remmen
BACKGROUND: Skeletal muscle atrophy during aging, a process known as sarcopenia, is associated with muscle weakness, frailty, and the loss of independence in older adults. The mechanisms contributing to sarcopenia are not totally understood, but muscle fiber loss due to apoptosis, reduced stimulation of anabolic pathways, activation of catabolic pathways, denervation, and altered metabolism have been observed in muscle from old rodents and humans. OBJECTIVE: Recently, histone deacetylases (HDACs) have been implicated in muscle atrophy and dysfunction due to denervation, muscular dystrophy, and disuse, and HDACs play key roles in regulating metabolism in skeletal muscle...
October 27, 2016: Nutr Healthy Aging
https://www.readbyqxmd.com/read/28029254/pegylated-and-functionalized-aliphatic-polycarbonate-polyplex-nanoparticles-for-intravenous-administration-of-hdac5-sirna-in-cancer-therapy
#5
Antoine Frère, Alexandra Baroni, Elodie Hendrick, Anne-Sophie Delvigne, François Orange, Olivier Peulen, George R Dakwar, Jérôme Diricq, Philippe Dubois, Brigitte Evrard, Katrien Remaut, Kevin Braeckmans, Stefaan C De Smedt, Julie Laloy, Jean-Michel Dogné, Georges Feller, Laetitia Mespouille, Denis Mottet, Geraldine Piel
Guanidine and morpholine functionalized aliphatic polycarbonate polymers able to efficiently deliver histone deacetylase 5 (HDAC5) siRNA into the cytoplasm of cancer cells in vitro leading to a decrease of cell proliferation were previously developed. To allow these biodegradable and biocompatible polyplex nanoparticles to overcome the extracellular barriers and be effective in vivo after an intravenous injection, polyethylene glycol chains (PEG750 or PEG2000) were grafted on the polymer structure. These nanoparticles, showed an average size of about 150 nm and a slightly positive zeta potential with complete siRNA complexation...
December 28, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28025089/histone-deacetylase-5-modulates-the-effects-of-social-adversity-in-early-life-on-cocaine-induced-behavior
#6
Alessandro Valzania, Clarissa Catale, Maria Teresa Viscomi, Stefano Puglisi-Allegra, Valeria Carola
Psychostimulants induce stable changes in neural plasticity and behavior in a transcription-dependent manner. Further, stable cellular changes require transcription that is regulated by epigenetic mechanisms that alter chromatin structure, such as histone acetylation. This mechanism is typically catalyzed by enzymes with histone acetyltransferase or histone deacetylase (HDAC) activity. Class IIa HDACs are notable for their high expression in important regions of the brain reward circuitry and their neural activity-dependent shuttling in and out of the cell nucleus...
December 23, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27931227/epigenetics-of-amphetamine-induced-sensitization-hdac5-expression-and-microrna-in-neural-remodeling
#7
Philip K Liu, Christina H Liu
BACKGROUND: Histone deacetylase (HDAC) activities modify chromatin structure and play a role in learning and memory during developmental processes. Studies of adult mice suggest HDACs are involved in neural network remodeling in brain repair, but its function in drug addiction is less understood. We aimed to examine in vivo HDAC5 expression in a preclinical model of amphetamine-induced sensitization (AIS) of behavior. We generated specific contrast agents to measure HDAC5 levels by in vivo molecular contrast-enhanced (MCE) magnetic resonance imaging (MRI) in amphetamine-naïve mice as well as in mice with AIS...
December 8, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27902771/piceatannol-attenuates-renal-fibrosis-induced-by-unilateral-ureteral-obstruction-via-downregulation-of-histone-deacetylase-4-5-or-p38-mapk-signaling
#8
Sin Young Choi, Zhe Hao Piao, Li Jin, Jung Ha Kim, Gwi Ran Kim, Yuhee Ryu, Ming Quan Lin, Hyung-Seok Kim, Hae Jin Kee, Myung Ho Jeong
Piceatannol, a resveratrol metabolite, is a phenolic compound found in red wine and grapes. We investigated the effect of piceatannol on renal fibrosis and histone deacetylase (HDAC) expression in a mouse model of unilateral ureteral obstruction (UUO). Fibrosis was established by UUO and piceatannol was intraperitoneally injected for 2 weeks. Piceatannol suppressed extracellular matrix (ECM) protein deposition including collagen type I and fibronectin as well as connective tissue growth factor (CTGF) and α-smooth muscle actin (α-SMA) in UUO kidneys...
2016: PloS One
https://www.readbyqxmd.com/read/27900262/impaired-histone-deacetylases-5-and-6-expression-mimics-the-effects-of-obesity-and-hypoxia-on-adipocyte-function
#9
Julien Bricambert, Dimitri Favre, Saška Brajkovic, Amélie Bonnefond, Raphael Boutry, Roberto Salvi, Valérie Plaisance, Mohamed Chikri, Giulia Chinetti-Gbaguidi, Bart Staels, Vittorio Giusti, Robert Caiazzo, François Pattou, Gérard Waeber, Philippe Froguel, Amar Abderrahmani
OBJECTIVE: The goal of the study was to investigate the role of histone deacetylases (HDACs) in adipocyte function associated with obesity and hypoxia. METHODS: Total proteins and RNA were prepared from human visceral adipose tissues (VAT) of human obese and normal weight subjects and from white adipose tissue (WAT) of C57Bl6-Rj mice fed a normal or high fat diet (HFD) for 16 weeks. HDAC activity was measured by colorimetric assay whereas the gene and protein expression were monitored by real-time PCR and by western blotting, respectively...
December 2016: Molecular Metabolism
https://www.readbyqxmd.com/read/27899448/serine-threonine-kinase-40-stk40-functions-as-a-novel-regulator-of-skeletal-muscle-differentiation
#10
Ke He, Jing Hu, Hongyao Yu, Lina Wang, Fan Tang, Junjie Gu, Laixiang Ge, Hongye Wang, Sheng Li, Ping Hu, Ying Jin
Skeletal muscle differentiation is a precisely coordinated process, and the molecular mechanism regulating the process remains incompletely understood. Here we report the identification of serine/threonine kinase 40 (Stk40) as a novel positive regulator of skeletal myoblast differentiation in culture and fetal skeletal muscle formation in vivo We show that the expression level of Stk40 increases during skeletal muscle differentiation. Down-regulation and overexpression of Stk40 significantly decreases and increases myogenic differentiation of C2C12 myoblasts, respectively...
January 6, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27759007/siks-control-osteocyte-responses-to-parathyroid-hormone
#11
Marc N Wein, Yanke Liang, Olga Goransson, Thomas B Sundberg, Jinhua Wang, Elizabeth A Williams, Maureen J O'Meara, Nicolas Govea, Belinda Beqo, Shigeki Nishimori, Kenichi Nagano, Daniel J Brooks, Janaina S Martins, Braden Corbin, Anthony Anselmo, Ruslan Sadreyev, Joy Y Wu, Kei Sakamoto, Marc Foretz, Ramnik J Xavier, Roland Baron, Mary L Bouxsein, Thomas J Gardella, Paola Divieti-Pajevic, Nathanael S Gray, Henry M Kronenberg
Parathyroid hormone (PTH) activates receptors on osteocytes to orchestrate bone formation and resorption. Here we show that PTH inhibition of SOST (sclerostin), a WNT antagonist, requires HDAC4 and HDAC5, whereas PTH stimulation of RANKL, a stimulator of bone resorption, requires CRTC2. Salt inducible kinases (SIKs) control subcellular localization of HDAC4/5 and CRTC2. PTH regulates both HDAC4/5 and CRTC2 localization via phosphorylation and inhibition of SIK2. Like PTH, new small molecule SIK inhibitors cause decreased phosphorylation and increased nuclear translocation of HDAC4/5 and CRTC2...
October 19, 2016: Nature Communications
https://www.readbyqxmd.com/read/27667720/g9a-inhibits-mef2c-activity-to-control-sarcomere-assembly
#12
Jin Rong Ow, Monica Palanichamy Kala, Vinay Kumar Rao, Min Hee Choi, Narendra Bharathy, Reshma Taneja
In this study, we demonstrate that the lysine methyltransferase G9a inhibits sarcomere organization through regulation of the MEF2C-HDAC5 regulatory axis. Sarcomeres are essential for muscle contractile function. Presently, skeletal muscle disease and dysfunction at the sarcomere level has been associated with mutations of sarcomere proteins. This study provides evidence that G9a represses expression of several sarcomere genes and its over-expression disrupts sarcomere integrity of skeletal muscle cells. G9a inhibits MEF2C transcriptional activity that is essential for expression of sarcomere genes...
September 26, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27614433/hdac5-inhibits-hepatic-lipogenic-genes-expression-by-attenuating-the-transcriptional-activity-of-liver-x-receptor
#13
Hai-Yan Jia, Quan-Zhong Li, Li-Fang Lv
BACKGROUND/AIMS: Liver X receptor (LXR), a member of the nuclear receptor superfamily, is known to induce the expression of SREBP-1c and ChREBP, two master regulators of hepatic lipogenesis. Histone deacyetylases (HDACs) have been shown to play critical roles in glucose and lipids metabolism. However, the exact role of HDAC5 in lipogenesis remains elusive. METHODS: mRNA and protein levels of HDAC5 were analyzed by quantitative real-time PCR and Western blots in high-fat-diet-induced and leptin receptor deficiency-induced obese mice...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27613164/a-novel-role-of-g-protein-coupled-receptor-kinase-5-in-urotensin-ii-stimulated-cellular-hypertrophy-in-h9c2ut-cells
#14
Cheon Ho Park, Ju Hee Lee, Mi Young Lee, Jeong Hyun Lee, Byung Ho Lee, Kwang-Seok Oh
Urotensin II (UII) is a neural hormone that induces cardiac hypertrophy and may be involved in the pathogenesis of cardiac remodeling and heart failure. Hypertrophy has been linked to histone deacetylase 5 (HDAC5) phosphorylation and nuclear factor κB (NF-κB) translocation, both of which are predominantly mediated by G protein-coupled receptor kinase 5 (GRK5). In the present study, we found that UII rapidly and strongly stimulated nuclear export of HDAC5 and nuclear import of NF-κB in H9c2 cells overexpressing the urotensin II receptor (H9c2UT)...
November 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27572323/mycn-and-hdac5-transcriptionally-repress-cd9-to-trigger-invasion-and-metastasis-in-neuroblastoma
#15
Johannes Fabian, Desirée Opitz, Kristina Althoff, Marco Lodrini, Barbara Hero, Ruth Volland, Anneleen Beckers, Katleen de Preter, Anneleen Decock, Nitin Patil, Mohammed Abba, Annette Kopp-Schneider, Kathy Astrahantseff, Jasmin Wünschel, Sebastian Pfeil, Maria Ercu, Annette Künkele, Jamie Hu, Theresa Thole, Leonille Schweizer, Gunhild Mechtersheimer, Daniel Carter, Belamy B Cheung, Odilia Popanda, Andreas V Deimling, Jan Koster, Rogier Versteeg, Manfred Schwab, Glenn M Marshall, Frank Speleman, Ulrike Erb, Margot Zoeller, Heike Allgayer, Thorsten Simon, Matthias Fischer, Andreas E Kulozik, Angelika Eggert, Olaf Witt, Johannes H Schulte, Hedwig E Deubzer
The systemic and resistant nature of metastatic neuroblastoma renders it largely incurable with current multimodal treatment. Clinical progression stems mainly from the increasing burden of metastatic colonization. Therapeutically inhibiting the migration-invasion-metastasis cascade would be of great benefit, but the mechanisms driving this cycle are as yet poorly understood. In-depth transcriptome analyses and ChIP-qPCR identified the cell surface glycoprotein, CD9, as a major downstream player and direct target of the recently described GRHL1 tumor suppressor...
October 11, 2016: Oncotarget
https://www.readbyqxmd.com/read/27562730/tgf%C3%AE-induced-switch-from-adipogenic-to-osteogenic-differentiation-of-human-mesenchymal-stem-cells-identification-of-drug-targets-for-prevention-of-fat-cell-differentiation
#16
Everardus J van Zoelen, Isabel Duarte, José M Hendriks, Sebastian P van der Woning
BACKGROUND: Patients suffering from osteoporosis show an increased number of adipocytes in their bone marrow, concomitant with a reduction in the pool of human mesenchymal stem cells (hMSCs) that are able to differentiate into osteoblasts, thus leading to suppressed osteogenesis. METHODS: In order to be able to interfere with this process, we have investigated in-vitro culture conditions whereby adipogenic differentiation of hMSCs is impaired and osteogenic differentiation is promoted...
August 26, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27528396/deciphering-transcriptome-profiles-of-peripheral-blood-mononuclear-cells-in-response-to-prrsv-vaccination-in-pigs
#17
Md Aminul Islam, Christine Große-Brinkhaus, Maren Julia Pröll, Muhammad Jasim Uddin, Sharmin Aqter Rony, Dawit Tesfaye, Ernst Tholen, Michael Hölker, Karl Schellander, Christiane Neuhoff
BACKGROUND: Porcine reproductive and respiratory syndrome (PRRS) is one of the most economically important viral diseases affecting swine industry worldwide. Despite routine farm vaccination, effective control strategies for PRRS remained elusive which underscores the need for in-depth studies to gain insight into the host immune response to vaccines. The current study aimed to investigate transcriptional responses to PRRS Virus (PRRSV) vaccine in the peripheral blood mononuclear cells (PBMCs) within 3 days following vaccination in German Landrace pigs...
2016: BMC Genomics
https://www.readbyqxmd.com/read/27513844/ampk-mediates-glucocorticoids-stress-induced-downregulation-of-the-glucocorticoid-receptor-in-cultured-rat-prefrontal-cortical-astrocytes
#18
Shi-Ying Yuan, Jue Liu, Jun Zhou, Wei Lu, Hai-Yun Zhou, Li-Hong Long, Zhuang-Li Hu, Lan Ni, Yi Wang, Jian-Guo Chen, Fang Wang
Chronic stress induces altered energy metabolism and plays important roles in the etiology of depression, in which the glucocorticoid negative feedback is disrupted due to imbalanced glucocorticoid receptor (GR) functions. The mechanism underlying the dysregulation of GR by chronic stress remains elusive. In this study, we investigated the role of AMP-activated protein kinase (AMPK), the key enzyme regulating cellular energy metabolism, and related signaling pathways in chronic stress-induced GR dysregulation...
2016: PloS One
https://www.readbyqxmd.com/read/27436825/interferon-inducible-t-cell-alpha-chemoattractant-itac-induces-the-melanocytic-migration-and-hypopigmentation-through-destabilizing-p53-via-histone-deacetylase-5-a-possible-role-of-itac-in-pigment-related-disorders
#19
E Lee, S-Y Choi, B-H Bin, N-H Kim, K H Kim, D-H Choi, J Han, H Choi, A-Y Lee, T R Lee, E-G Cho
BACKGROUND: Cell migration plays a major role in the immune response and in tumorigenesis. Interferon-inducible T-cell alpha chemoattractant (ITAC) elicits a strong chemotactic response from immune cells. OBJECTIVES: To examine the effect of ITAC on melanocyte migration and pigmentation and its involvement in related disorders, and to investigate potential key players in these processes. METHODS: Human melanocytes or melanoma cells were treated with ITAC and a migration assay was carried out...
January 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/27405852/neuroprotective-effects-of-paeonia-lactiflora-extract-against-cell-death-of-dopaminergic-sh-sy5y-cells-is-mediated-by-epigenetic-modulation
#20
Gyuhwi Lee, Jong Cheon Joo, Bo Yoon Choi, Anders M Lindroth, Soo Jung Park, Yoon Jung Park
BACKGROUND: The Paeonia lactiflora extract (PLE) has been reported to have neuroprotective effect against neurodegeneration that are induced by cellular stress such as oxidative stress. Its underlying mechanisms, however, remain unclear. In latest decades, emerging evidence has suggested that epigenetic mechanisms play a key role in gene regulation in response to the cellular stress. We investigated whether epigenetic modulation was involved in neuronal cell death by the neurotoxicant, 1-Methyl-4-phenylpyridinium (MPP(+)), and the neuroprotective effect of PLE...
July 12, 2016: BMC Complementary and Alternative Medicine
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