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https://www.readbyqxmd.com/read/28336942/selective-inhibitor-of-wnt-%C3%AE-catenin-cbp-signaling-ameliorates-hepatitis-c-virus-induced-liver-fibrosis-in-mouse-model
#1
Yuko Tokunaga, Yosuke Osawa, Takahiro Ohtsuki, Yukiko Hayashi, Kenzaburo Yamaji, Daisuke Yamane, Mitsuko Hara, Keisuke Munekata, Kyoko Tsukiyama-Kohara, Tsunekazu Hishima, Soichi Kojima, Kiminori Kimura, Michinori Kohara
Chronic hepatitis C virus (HCV) infection is one of the major causes of serious liver diseases, including liver cirrhosis. There are no anti-fibrotic drugs with efficacy against liver cirrhosis. Wnt/β-catenin signaling has been implicated in the pathogenesis of a variety of tissue fibrosis. In the present study, we investigated the effects of a β-catenin/CBP (cyclic AMP response element binding protein) inhibitor on liver fibrosis. The anti-fibrotic activity of PRI-724, a selective inhibitor of β-catenin/CBP, was assessed in HCV GT1b transgenic mice at 18 months after HCV genome expression...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28334776/structural-characterization-of-interactions-between-transactivation-domain-1-of-the-p65-subunit-of-nf-%C3%AE%C2%BAb-and-transcription-regulatory-factors
#2
Lauriane Lecoq, Luca Raiola, Philippe R Chabot, Normand Cyr, Geneviève Arseneault, Pascale Legault, James G Omichinski
p65 is a member of the NF-κB family of transcriptional regulatory proteins that functions as the activating component of the p65-p50 heterodimer. Through its acidic transactivation domain (TAD), p65 has the capacity to form interactions with several different transcriptional regulatory proteins, including TFIIB, TFIIH, CREB-binding protein (CBP)/p300 and TAFII31. Like other acidic TADs, the p65 TAD contains two subdomains (p65TA1 and p65TA2) that interact with different regulatory factors depending on the target gene...
February 28, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28332395/electrolyte-gated-red-green-and-blue-organic-light-emitting-diodes
#3
Jiang Liu, Dustin Yuan Chen, Xinning Luan, Kwing Tong, Fangchao Zhao, Chao Liu, Qibing Pei, Huaping Li
We report vertical, electrolyte-gated, red, green and blue phosphorescent small molecule organic light emitting diodes (OLED), in which light emission was modified by tuning the electron injection via electrochemical doping of the electron injection layer 4,4-bis(N-carbazolyl)-1,1-biphenyl (CBP) under the assistance of a polymer electrolyte. These devices comprise an electrolyte capacitor on top of a conventional OLED, with the interfacial contact between the electrolyte and electron injection layer CBP of OLEDs achieved through a porous cathode...
March 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28332137/correction-of-dilutional-anemia-induces-renal-dysfunction-in-diabetic-patients-undergoing-coronary-artery-bypass-grafting-a-consequence-of-microcirculatory-alterations
#4
Güçlü Aykut, Meltem Kilercik, Cem Arıtürk, Halim Ulugöl, Uğur Aksu, Türkan Kudsioğlu, Nazan Atalan, Nihan Yapıcı, Hasan Karabulut, Fevzi Toraman
BACKGROUND: In this study we aimed to evaluate the effects of dilutional anemia resulting from cardiopulmonary bypass (CPB) and its correction with red blood cell (RBC) transfusion on tissue oxygenation and renal function in diabetic patients undergoing coronary artery bypass grafting (CABG). METHOD: 70 diabetic patients who underwent elective CABG and whose hematocrit values had been between 24-28% at any time during CBP were prospectively randomized and equally allocated to two groups: patients who received RBC during CPB (group I, n = 35) vs...
March 22, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28331542/expression-of-a-heat-stable-nadph-dependent-alcohol-dehydrogenase-from-thermoanaerobacter-pseudethanolicus-39e-in-clostridium-thermocellum-1313-results-in-increased-hydroxymethylfurfural-resistance
#5
Sun-Ki Kim, Joseph Groom, Daehwan Chung, James Elkins, Janet Westpheling
BACKGROUND: Resistance to deconstruction is a major limitation to the use of lignocellulosic biomass as a substrate for the production of fuels and chemicals. Consolidated bioprocessing (CBP), the use of microbes for the simultaneous hydrolysis of lignocellulose into soluble sugars and fermentation of the resulting sugars to products of interest, is a potential solution to this obstacle. The pretreatment of plant biomass, however, releases compounds that are inhibitory to the growth of microbes used for CBP...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28329675/trimethylation-and-acetylation-of-%C3%AE-catenin-at-lysine-49-represent-key-elements-in-esc-pluripotency
#6
Katrin Hoffmeyer, Dirk Junghans, Benoit Kanzler, Rolf Kemler
Wnt/β-catenin signaling is required for embryonic stem cell (ESC) pluripotency by inducing mesodermal differentiation and inhibiting neuronal differentiation; however, how β-catenin counter-regulates these differentiation pathways is unknown. Here, we show that lysine 49 (K49) of β-catenin is trimethylated (β-catMe3) by Ezh2 or acetylated (β-catAc) by Cbp. Significantly, β-catMe3 acts as a transcriptional co-repressor of the neuronal differentiation genes sox1 and sox3, whereas β-catAc acts as a transcriptional co-activator of the key mesodermal differentiation gene t-brachyury (t-bra)...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28326329/diagnostic-value-of-ck-18-fgf-21-and-related-biomarker-panel-in-nonalcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#7
REVIEW
Lei He, Linfeng Deng, Quan Zhang, Jianli Guo, Jinan Zhou, Wenjian Song, Fahu Yuan
Liver biopsy still remains the gold standard for diagnosing nonalcoholic steatohepatitis (NASH), but with limitations. There is an urgent need to develop noninvasive tests that accurately distinguish NASH from simple steatosis. The purpose of this meta-analysis was to evaluate the diagnostic value of serum biomarkers including cytokeratin 18 (CK-18), fibroblast growth factor 21 (FGF-21), and combined biomarker panel (CBP) in the diagnosis of NAFLD, especially NASH. A total of 25 studies met the inclusion criteria...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28322791/lps-depletes-phlpp-levels-in-macrophages-through-the-inhibition-of-sp1-dependent-transcriptional-regulation
#8
Neeraja P Alamuru-Yellapragada, Sanghamitra Vundyala, Soma Behera, Kishore V L Parsa
We have previously reported that bacterial endotoxin LPS attenuates expression of PHLPP, a ser/thr phosphatase, at both transcript and protein levels in different immune cells, however the underlying molecular mechanism is unknown and is of significant interest. Here, in line with the decreased transcript levels upon LPS treatment, we observed that LPS caused significant reduction in PHLPP promoter activity. We observed that SP1, a transcription factor frequently associated with inflammation, was recruited to the PHLPP promoter region...
March 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28321055/the-relationships-between-the-differences-in-the-central-blood-pressure-and-brachial-blood-pressure-and-other-factors-in-patients-with-essential-hypertension
#9
Masaki Ryuzaki, Satoshi Morimoto, Michita Niiyama, Yasufumi Seki, Naohiro Yoshida, Yoichi Oshima, Yuki Mizuguchi, Daisuke Watanabe, Takashi Ando, Atsuhiro Ichihara
Objective The management of blood pressure (BP) in hypertensive patients is the key to preventing a progression of organ damage. The brachial BP (bBP) has been used as the representative method for measuring the BP. The central BP (cBP), which is, different from the bBP due to the propagation and the reflection of the pulse wave in the arterial system, has recently received attention because it can now be estimated non-invasively. We examined the relationships between the difference in the central systolic BP (csBP) and the brachial systolic BP (bsBP) (Δ) and other factors in hypertensive patients...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28317782/assessment-of-iron-bioavailability-from-different-bread-making-processes-using-an-in-vitro-intestinal-cell-model
#10
I Rodriguez-Ramiro, C A Brearley, S F A Bruggraber, A Perfecto, P Shewry, S Fairweather-Tait
Myo-inositol hexakisphosphate (IP6), is the main iron chelator in cereals and bread. The aim of this study was to investigate the effect of three commercial baking processes (sourdough, conventional yeast and Chorleywood Bread Making Process (CBP)) on the IP6 content of wholemeal bread, its impact on iron uptake in Caco-2 cells and the predicted bioavailability of iron from these breads with added iron, simulating a mixed-meal. The sourdough process fully degraded IP6 whilst the CBP and conventional processes reduced it by 75% compared with wholemeal flour...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28314902/potential-factors-enabling-human-body-colonization-by-animal-streptococcus-dysgalactiae-subsp-equisimilis-strains
#11
Marcin Ciszewski, Eligia M Szewczyk
Streptococcus dysgalactiae subsp. equisimilis (SDSE) is a pyogenic, Lancefield C or G streptococcal pathogen. Until recently, it has been considered as an exclusive animal pathogen. Nowadays, it is responsible for both animal infections in wild animals, pets, and livestock and human infections often clinically similar to the ones caused by group A streptococcus (Streptococcus pyogenes). The risk of zoonotic infection is the most significant in people having regular contact with animals, such as veterinarians, cattlemen, and farmers...
March 18, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28314773/glucocorticoid-receptor-signaling-represses-the-antioxidant-response-by-inhibiting-histone-acetylation-mediated-by-the-transcriptional-activator-nrf2
#12
Md Morshedul Alam, Keito Okazaki, Linh Thi Thao Nguyen, Nao Ota, Hiroshi Kitamura, Shohei Murakami, Hiroki Shima, Kazuhiko Igarashi, Hiroki Sekine, Hozumi Motohashi
NRF2 (nuclear factor erythroid 2-related factor 2) is a key transcriptional activator that mediates the inducible expression of antioxidant genes. NRF2 is normally ubiquitinated by KEAP1 (Kelch-like ECH-associated protein 1) and subsequently degraded by proteasomes. Inactivation of KEAP1 by oxidative stress or electrophilic chemicals allows NRF2 to activate transcription through binding to antioxidant response elements (AREs) and recruiting histone acetyltransferase CBP (CREB-binding protein). While KEAP1-dependent regulation is a major determinant of NRF2 activity, NRF2-mediated transcriptional activation varies from context to context, suggesting other intracellular signaling cascades may impact NRF2 function...
March 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28301306/two-possible-modes-of-pioneering-associated-with-combinations-of-h2a-z-and-p300-cbp-at-nucleosome-occupied-enhancers
#13
Pierre Cauchy, Frederic Koch, Jean-Christophe Andrau
Pioneer transcription factors are defined by their ability to bind nucleosome-occupied regions. Here, we discuss the properties of nucleosomes bound by pioneers at enhancer regions. We describe how select pioneers bind nucleosome-occupied or -depleted enhancer sites. Importantly, by revisiting and expanding existing data sets, we show differential H2A.Z and p300/CBP association at bound enhancers, highlighting two possible pioneering modes.
February 13, 2017: Transcription
https://www.readbyqxmd.com/read/28290391/effect-of-propofol-anesthesia-on-resting-state-brain-functional-connectivity-in-indian-population-with-chronic-back-pain
#14
Kamath Sriganesh, Rakesh Balachandar, Bhavani Shankara Bagepally, Jitender Saini, G S Umamaheswara Rao
OBJECTIVE: Functional magnetic resonance imaging (fMRI) studies in healthy volunteers have shown alterations in brain connectivity following anesthesia as compared to the awake state. It is not known if the anesthesia-induced changes in brain connectivity are different in a pathological state. This study aims to evaluate changes in the resting state functional connectivity in the brain, after propofol anesthesia, in patients with chronic back pain (CBP). MATERIALS AND METHODS: Fourteen adults with CBP were included in this prospective study over 6 months...
March 2017: Neurology India
https://www.readbyqxmd.com/read/28288570/effect-of-tolvaptan-on-renal-water-and-sodium-excretion-and-blood-pressure-during-nitric-oxide-inhibition-a-dose-response-study-in-healthy-subjects
#15
Safa Al Therwani, Jeppe Bakkestrøm Rosenbæk, Frank Holden Mose, Jesper Nørgaard Bech, Erling Bjerregaard Pedersen
BACKGROUND: Tolvaptan is a selective vasopressin receptor antagonist. Nitric Oxide (NO) promotes renal water and sodium excretion, but the effect is unknown in the nephron's principal cells. In a dose-response study, we measured the effect of tolvaptan on renal handling of water and sodium and systemic hemodynamics, during baseline and NO-inhibition with L-NMMA (L-NG-monomethyl-arginine). METHODS: In a randomized, placebo-controlled, double blind, cross over study, 15 healthy subjects received tolvaptan 15, 30 and 45 mg or placebo...
March 13, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28287402/hdac6-mediated-acetylation-of-lipid-droplet-binding-protein-cidec-regulates-fat-induced-lipid-storage
#16
Hui Qian, Yuanying Chen, Zongqian Nian, Lu Su, Haoyong Yu, Feng-Jung Chen, Xiuqin Zhang, Wenyi Xu, Linkang Zhou, Jiaming Liu, Jinhai Yu, Luxin Yu, Yan Gao, Hongchao Zhang, Haihong Zhang, Shimin Zhao, Li Yu, Rui-Ping Xiao, Yuqian Bao, Shaocong Hou, Pingping Li, Jiada Li, Haiteng Deng, Weiping Jia, Peng Li
Obesity is characterized by aberrant fat accumulation. However, the intracellular signaling pathway that senses dietary fat and leads to fat storage remains elusive. Here, we have observed that the levels of histone deacetylase 6 (HDAC6) and the related family member HDAC10 are markedly reduced in adipose tissues of obese animals and humans. Mice with adipocyte-specific depletion of Hdac6 exhibited increased fat accumulation and reduced insulin sensitivity. In normal adipocytes, we found that reversal of P300/CBP-associated factor-induced (PCAF-induced) acetylation at K56 on cell death-inducing DFFA-like effector C (CIDEC, also known as FSP27) critically regulated lipid droplet fusion and lipid storage...
March 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28286521/pulling-a-ligase-out-of-a-hat-pcaf-mediates-ubiquitination-of-the-class-ii-transactivator
#17
Julie E Morgan, Susanna F Greer
The Class II Transactivator (CIITA) is essential to the regulation of Major Histocompatibility Class II (MHC II) genes transcription. As the "master regulator" of MHC II transcription, CIITA regulation is imperative and requires various posttranslational modifications (PTMs) in order to facilitate its role. Previously we identified various ubiquitination events on CIITA. Monoubiquitination is important for CIITA transactivity, while K63 linked ubiquitination is involved in crosstalk with ERK1/2 phosphorylation, where together they mediate cellular movement from the cytoplasm to nuclear region...
2017: International Journal of Cell Biology
https://www.readbyqxmd.com/read/28276606/smarca5-snf2h-is-required-for-proliferation-of-hematopoietic-stem-cells-differentiating-into-erythroid-and-myeloid-lineages
#18
Juraj Kokavec, Tomas Zikmund, Filipp Savvulidi, Vojtech Kulvait, Winfried Edelmann, Arthur I Skoultchi, Tomas Stopka
The Imitation Switch (ISWI) nuclear ATPase Smarca5 (Snf2h) is one of the most conserved chromatin remodeling factors. It exists in a variety of oligosubunit complexes that move DNA with respect to the histone octamer to generate regularly spaced nucleosomal arrays. Smarca5 interacts with different accessory proteins and represents a molecular motor for DNA replication, repair and transcription. We deleted Smarca5 at the onset of definitive hematopoiesis (Vav1-iCre) and observed that animals die during late fetal development due to anemia...
March 9, 2017: Stem Cells
https://www.readbyqxmd.com/read/28273070/hypersensitive-termination-of-the-hypoxic-response-by-a-disordered-protein-switch
#19
Rebecca B Berlow, H Jane Dyson, Peter E Wright
The cellular response to hypoxia is critical for cell survival and is fine-tuned to allow cells to recover from hypoxic stress and adapt to heterogeneous or fluctuating oxygen levels. The hypoxic response is mediated by the α-subunit of the transcription factor HIF-1 (HIF-1α), which interacts through its intrinsically disordered C-terminal transactivation domain with the TAZ1 (also known as CH1) domain of the general transcriptional coactivators CBP and p300 to control the transcription of critical adaptive genes...
March 16, 2017: Nature
https://www.readbyqxmd.com/read/28261326/engineering-vesicle-trafficking-improves-the-extracellular-activity-and-surface-display-efficiency-of-cellulases-in-saccharomyces-cerevisiae
#20
Hongting Tang, Meihui Song, Yao He, Jiajing Wang, Shenghuan Wang, Yu Shen, Jin Hou, Xiaoming Bao
BACKGROUND: Cellulase expression via extracellular secretion or surface display in Saccharomyces cerevisiae is one of the most frequently used strategies for a consolidated bioprocess (CBP) of cellulosic ethanol production. However, the inefficiency of the yeast secretory pathway often results in low production of heterologous proteins, which largely limits cellulase secretion or display. RESULTS: In this study, the components of the vesicle trafficking from the endoplasmic reticulum (ER) to the Golgi and from the Golgi to the plasma membrane, involved in vesicle budding, tethering and fusion, were over-expressed in Clostridium thermocellum endoglucanase (CelA)- and Sacchromycopsis fibuligera β-glucosidase (BGL1)-secreting or -displaying strains...
2017: Biotechnology for Biofuels
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