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https://www.readbyqxmd.com/read/27931258/htra-mediated-e-cadherin-cleavage-is-limited-to-degp-and-degq-homologs-expressed-by-gram-negative-pathogens
#1
Carmen M Abfalter, Maria Schubert, Camilla Götz, Thomas P Schmidt, Gernot Posselt, Silja Wessler
BACKGROUND: The serine proteases HtrA/DegP secreted by the human gastrointestinal pathogens Helicobacter pylori (H. pylori) and Campylobacter jejuni (C. jejuni) cleave the mammalian cell adhesion protein E-cadherin to open intercellular adhesions. A wide range of bacteria also expresses the HtrA/DegP homologs DegQ and/or DegS, which significantly differ in structure and function. METHODS: E-cadherin shedding was investigated in infection experiments with the Gram-negative pathogens H...
December 8, 2016: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/27930342/correction-for-jabed-et-al-targeted-microrna-expression-in-dairy-cattle-directs-production-of-%C3%AE-lactoglobulin-free-high-casein-milk
#2
(no author information available yet)
No abstract text is available yet for this article.
December 5, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27929731/autophagic-homeostasis-is-required-for-the-pluripotency-of-cancer-stem-cells
#3
Tanveer Sharif, Emma Martell, Cathleen Dai, Barry E Kennedy, Patrick Murphy, Derek Clements, Youra Kim, Patrick W K Lee, Shashi Gujar
Pluripotency is an important feature of cancer stem cells (CSCs) that contributes to self-renewal and chemoresistance. The maintenance of pluripotency of CSCs under various pathophysiological conditions requires a complex interaction between various cellular pathways including those involved in homeostasis and energy metabolism. However, the exact mechanisms that maintain the CSC pluripotency remain poorly understood. In this report, using both human and murine models of CSCs, we demonstrate that basal levels of autophagy are required to maintain the pluripotency of CSCs, and that this process is differentially regulated by the rate limiting enzyme in the NAD(+) synthesis pathway NAMPT (nicotinamide phosphoribosyltransferase) and the transcription factor POU5F1/OCT4 (POU class 5 homeobox 1)...
December 8, 2016: Autophagy
https://www.readbyqxmd.com/read/27928950/molecular-and-pharmaceutical-aspects-of-novel-methods-and-materials-for-the-prevention-of-tooth-structure-loss
#4
Laurence J Walsh
In the past decade, a range of dental products have appeared which make advertising claims around preventing mineral loss or repairing mineral loss. This review examines the requirements for effective protection of tooth structure, and the evidence around technologies now available for preventing tooth structure loss and repairing demineralized enamel, ranging from tooth surface protection and enhanced fluoride uptake through to calcium compounds, unstabilized amorphous calcium phosphate, tricalcium phosphate, and casein phosphopeptide - amorphous calcium phosphate...
December 7, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27926791/high-prevalence-of-mitf-staining-in-undifferentiated-pleomorphic-sarcoma-caution-in-use-of-melanocytic-markers-in-sarcoma
#5
Bonnie Choy, Elizabeth Hyjek, Anthony G Montag, Peter Pytel, Rex Haydon, Hue H Luu, Chao Jie Zhen, Bradley C Long, Sabah Kadri, Jeremy P Segal, Larissa V Furtado, Nicole A Cipriani
AIMS: Diagnosis of undifferentiated pleomorphic sarcoma (UPS) may be challenging, as other lesions with undifferentiated spindle cell morphology must be excluded, including melanoma. Microphthalmia-associated transcription factor (MiTF) stains nevi and epithelioid melanomas, as well as some mesenchymal neoplasms. We evaluated the prevalence of MiTF and melanocytic markers in UPS and a subset of atypical fibroxanthoma (AFX). METHODS AND RESULTS: MiTF, SOX10, Melan-A, HMB45, and S100 immunostains were performed on resection specimens from 19 UPS and 5 AFX...
December 7, 2016: Histopathology
https://www.readbyqxmd.com/read/27924973/selection-of-aptamers-based-on-a-protein-microarray-integrated-with-a-microfluidic-chip
#6
Xiaohui Liu, Hui Li, Wenchao Jia, Zhu Chen, Danke Xu
We developed an efficient and fast method based on a protein microarray integrated with a microfluidic chip for the process of SELEX (systematic evolution of ligands by exponential enrichment). Lactoferrin from bovine milk was used as a target protein, while bovine serum albumin (BSA), α-lactalbumin, β-lactoglobulin and casein were used as negative proteins. They were separately dotted and immobilized to prepare the protein microarray and the resulting microarray was further integrated into a microfluidic chip for the SELEX (PMM-SELEX) process...
December 7, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27924448/milk-protein-polymorphisms-and-casein-haplotypes-in-butana-cattle
#7
A Said Ahmed, S Rahmatalla, R Bortfeldt, D Arends, M Reissmann, G A Brockmann
Butana is a Bos indicus dairy cattle breed that is well adapted to the local environment of Sudan. The breed has been gradually declining in number due to breed substitution. Therefore, conservation and improvement strategies are required to maintain this breed. The aim of the present study was to assess genetic variation that is characteristic for Butana cattle in the milk protein genes CSN1S1, CSN2, CSN1S2, CSN3, LALBA, and LGB. In a first step, genomic DNA of five unrelated individuals was comparatively sequenced across all exon and flanking sequences...
December 6, 2016: Journal of Applied Genetics
https://www.readbyqxmd.com/read/27923186/influence-of-surface-passivation-of-2-methoxyestradiol-loaded-plga-nanoparticles-on-cellular-interactions-pharmacokinetics-and-tumour-accumulation
#8
Gopikrishna J Pillai, Bindhu Paul-Prasanth, Shantikumar V Nair, Deepthy Menon
In the present work, 2-Methoxyestradiol [2ME2] loaded PLGA nanoparticles [NPs] were stabilized with Casein or poly(ethylene glycol) [PEG] and evaluated for its cellular interactions, pharmacokinetics and tumour accumulation. Surface stabilized PLGA nanoparticles prepared through a modified emulsion route possessed similar size, surface charge, drug loading and release characteristics. Particle-cell interactions as well as the anti-angiogenesis activity were similar for both nanoformulations in vitro. However, in vivo pharmacokinetics and tumour accumulation of the drug were substantially improved for the PEGylated nanoformulation...
November 29, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27923179/structural-dynamics-of-casein-kinase-i-cki-from-malarial-parasite-plasmodium-falciparum-isolate-3d7-insights-from-theoretical-modelling-and-molecular-simulations
#9
Budheswar Dehury, Santosh Kumar Behera, Namita Mahapatra
The protein kinases (PKs), belonging to serine/threonine kinase (STKs), are important drug targets for a wide spectrum of diseases in human. Among protein kinases, the Casein Kinases (CKs) are vastly expanded in various organisms, where, the malarial parasite Plasmodium falciparum possesses a single member i.e., PfCKI, which can phosphorylate various proteins in parasite extracts in vitro condition. But, the structure-function relationship of PfCKI and dynamics of ATP binding is yet to be understood. Henceforth, an attempt was made to study the dynamics, stability, and ATP binding mechanisms of PfCKI through computational modelling, docking, molecular dynamics (MD) simulations, and MM/PBSA binding free energy estimation...
November 21, 2016: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/27920254/casein-kinase-2-is-linked-to-stress-granule-dynamics-through-phosphorylation-of-the-stress-granule-nucleating-protein-g3bp1
#10
Lucas C Reineke, Wei-Chih Tsai, Antrix Jain, Jason T Kaelber, Sung Yun Jung, Richard E Lloyd
Stress granules are large macromolecular aggregates that contain translation initiation complexes and mRNAs. Stress granule formation coincides with translational repression, and stress granules actively signal to mediate cell fate decisions by a) signaling to the translation apparatus to maintain translational repression, b) mount various transcriptional responses including innate immunity, and c) to repress apoptosis. Previous work showed G3BP1 is phosphorylated at serine 149, which regulates G3BP1 oligomerization, stress granule assembly, and RNase activity intrinsic to G3BP1...
December 5, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27907894/interventions-for-orthodontically-induced-white-spot-lesions-a-systematic-review-and-meta-analysis
#11
REVIEW
Damian Höchli, Monika Hersberger-Zurfluh, Spyridon N Papageorgiou, Theodore Eliades
BACKGROUND: Although orthodontic white spot lesions (WSLs) are one of the most often and most evident adverse effects of comprehensive fixed appliance treatment, the efficacy of interventions for WSLs has not yet been adequately assessed in an evidence-based manner. OBJECTIVE: Aim of this systematic review was to assess the therapeutic and adverse effects of interventions to treat post-orthodontic WSLs from randomized trials in human patients. SEARCH METHODS: An unrestricted electronic search of eight databases from inception to May 2016...
October 17, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/27903831/dietary-mung-bean-protein-reduces-hepatic-steatosis-fibrosis-and-inflammation-in-male-mice-with-diet-induced-nonalcoholic-fatty-liver-disease
#12
Hitoshi Watanabe, Yuka Inaba, Kumi Kimura, Shun-Ichiro Asahara, Yoshiaki Kido, Michihiro Matsumoto, Takayasu Motoyama, Nobuhiko Tachibana, Shuichi Kaneko, Mitsutaka Kohno, Hiroshi Inoue
BACKGROUND: As the prevalence of nonalcoholic fatty liver disease (NAFLD), including steatosis and nonalcoholic steatohepatitis, is increasing, novel dietary approaches are required for the prevention and treatment of NAFLD. OBJECTIVE: We evaluated the potential of mung bean protein isolate (MuPI) to prevent NAFLD progression. METHODS: In Expts. 1 and 2, the hepatic triglyceride (TG) concentration was compared between 8-wk-old male mice fed a high-fat diet (61% of energy from fat) containing casein, MuPI, and soy protein isolate and an MuPI-constituent amino acid mixture as a source of amino acids (18% of energy) for 4 wk...
November 30, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27903233/evaluation-of-structure-chaperone-activity-and-allergenicity-of-reduced-glycated-adduct-of-bovine-%C3%AE-casein
#13
Reza Yousefi, Leila Ferdowsi, Zohreh Tavaf, Tanaz Sadeghian, Ali Mohammad Tamaddon, Mozhgan Moghtaderi, Zahra Pourpak
Milk has a potent reducing environment with an important quantity of sugar levels. In the current study β-casein was glycated in the presence of D-glucose and sodium cyanoborohydride as a reducing agent. Then, the reduced glucitol adduct of β-casein was used for the structural and functional analyses using different spectroscopic techniques. The results of fluorescence and far ultraviolet circular dichroism assessments suggest important structural alteration upon non-enzymatic glycation of β-casein. In addition, the chaperone activity, micellization properties and antioxidant activity of this protein were altered upon glucose modification...
November 21, 2016: Protein and Peptide Letters
https://www.readbyqxmd.com/read/27902191/pontibacter-aydingkolensis-sp-nov-isolated-from-soil-of-a-salt-lake-in-xinjiang-china
#14
Ghenijan Osman, Tao Zhang, Kai Lou, Yan Gao, Wei Chang, Qing Lin, Yang Hong-Mei, Xiang-Dong Huo, Ning Wang
A Gram-stain-negative, short rod-shaped and light red pigmented bacterium, designated XAAS-1T, was isolated from the soil of Aydingkol Lake near the Turpan City, Xinjiang, China. The isolate was positive for oxidase, catalase, and hydrolysis of starch, casein, gelatin and esculin. The sole respiratory quinone was MK-7 and the principal cellular fatty acids were Iso-C15:0 and C15:0 3OH. The major polar lipids were phosphatidylethanolamine, one unidentified phospholipid and two unidentified polar lipids. The polyamine pattern was found to contain mainly sym-homospermidine...
October 9, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27900429/highly-selective-sio2-nh2-tio2-hollow-microspheres-for-simultaneous-enrichment-of-phosphopeptides-and-glycopeptides
#15
Dongpo Xu, Guoquan Yan, Mingxia Gao, Chunhui Deng, Xiangmin Zhang
Glycosylation and phosphorylation as the commonest and most important posttranslational modifications of proteins play critical roles in biological processes. Specific and sensitive strategies have been developed to identify the glycosylation and phosphorylation of proteins by mass spectrometry but most of these methods have mainly focused on enriching glycopeptides or phosphopeptides separately, and few of them can enrich both of them. In this work, highly selective SiO2-NH2@TiO2 hollow microspheres were designed and synthesized for the simultaneous selective enrichment of both phosphopeptides and glycopeptides...
November 29, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27899804/casein-kinase-2-controls-the-survival-of-normal-thymic-and-leukemic-%C3%AE-%C3%AE-t-cells-via-promotion-of-akt-signaling
#16
S T Ribeiro, M Tesio, J C Ribot, E Macintyre, J T Barata, B Silva-Santos
The thymus is the major site for normal and leukemic T-cell development. The dissection of the molecular determinants of T-cell survival and differentiation is paramount for the manipulation of healthy or transformed T cells in cancer (immuno)therapy. Casein Kinase 2 (CK2) is a serine-threonine protein kinase whose anti-apoptotic functions have been described in various hematological and solid tumors. Here we disclose an unanticipated role of CK2 in healthy human thymocytes that is selective to the γδ T-cell lineage...
November 30, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27899104/the-magnitude-of-nephron-number-reduction-mediates-intrauterine-growth-restriction-induced-long-term-chronic-renal-disease-in-the-rat-a-comparative-study-in-two-experimental-models
#17
Farid Boubred, Laurent Daniel, Christophe Buffat, Michel Tsimaratos, Charles Oliver, Martine Lelièvre-Pégorier, Umberto Simeoni
BACKGROUND: Intrauterine growth restriction (IUGR) is a risk factor for hypertension (HT) and chronic renal disease (CRD). A reduction in the nephron number is proposed to be the underlying mechanism; however, the mechanism is debated. The aim of this study was to demonstrate that IUGR-induced HT and CRD are linked to the magnitude of nephron number reduction, independently on its cause. METHODS: Systolic blood pressure (SBP), glomerular filtration rate (GFR), proteinuria, nephron number, and glomerular sclerosis were compared between IUGR offspring prenatally exposed to a maternal low-protein diet (9% casein; LPD offspring) or maternal administration of betamethasone (from E17 to E19; BET offspring) and offspring with a normal birth weight (NBW offspring)...
November 30, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27898421/stimulation-of-erythrocyte-cell-membrane-scrambling-by-quinine
#18
Morena Mischitelli, Mohamed Jemaà, Mustafa Almasry, Caterina Faggio, Florian Lang
BACKGROUND/AIMS: The analkaloid drug quinine is utilized mainly for the chemoprophylaxis of malaria. The multiple side effects of quinine include hemolytic anemia and hemolytic uremic syndrome, disorders involving suicidal erythrocyte death or eryptosis, which is characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine translocation to the erythrocyte surface. Signaling contributing to stimulation of eryptosis include increase of cytosolic Ca2+ activity ([Ca2+]i), oxidative stress, ceramide and D4476 sensitive casein kinase...
November 30, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27897433/affinity-chromatography-matrices-for-depletion-and-purification-of-casein-glycomacropeptide-from-bovine-whey
#19
María F Baieli, Nicolás Urtasun, María J Martinez, Daniela B Hirsch, Ana M R Pilosof, María V Miranda, Osvaldo Cascone, Federico J Wolman
Casein glycomacropeptide (CMP) is a 64- amino acid peptide found in cheese whey, which is released after κ-casein specific cleavage by chymosin. CMP lacks aromatic amino acids, a characteristic that makes it usable as a nutritional supplement for people with phenylketonuria. CMP consists of two nonglycosylated isoforms (aCMP A and aCMP B) and its different glycosylated forms (gCMP A and gCMP B). The most predominant carbohydrate of gCMP is N-acetylneuraminic acid (sialic acid). Here, we developed a CMP purification process based on the affinity of sialic acid for wheat germ agglutinin (WGA)...
November 7, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27894411/allele-specific-pcr-and-melting-curve-analysis-showed-relatively-high-frequency-of-%C3%AE-casein-gene-a1-allele-in-iranian-holstein-simmental-and-native-cows
#20
M Gholami, S H Hafezian, G Rahimi, A Farhadi, Z Rahimi, D Kahrizi, S Kiani, H Karim, S Vaziri, S Muhammadi, F Veisi, K Ghadiri, H Shetabi, J Zargooshi
There are two allelic forms of A1 and A2 of β-casein gene in dairy cattle. Proteolytic digestion of bovine β-casein A1 type produces bioactive peptide of β-casomorphin-7 known as milk devil. β-casomorphin-7 causes many diseases, including type 1 diabetes, cardiovascular disease syndrome, sudden death and madness. The aim of the present study was to determine the different allelic forms of β-casein gene in Iranian Holstein, Simmental and native cattle in order to identify A1 and A2 variants. The blood samples were collected randomly and DNA was extracted using modified salting out method...
October 31, 2016: Cellular and Molecular Biology
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