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https://www.readbyqxmd.com/read/28343356/development-of-a-novel-strategy-to-target-cd39-antithrombotic-activity-to-the-endothelial-platelet-microenvironment-in-kidney-ischemia-reperfusion-injury
#1
Maithili Sashindranath, Karen M Dwyer, Shala Dezfouli, Carly Selan, Sandra Crikis, Bo Lu, Yuping Yuan, Michael J Hickey, Karlheinz Peter, Simon C Robson, Peter J Cowan, Harshal H Nandurkar
Kidney ischemia-reperfusion injury (IRI) is common during transplantation. IRI is characterised by inflammation and thrombosis and associated with acute and chronic graft dysfunction. P-selectin and its ligand PSGL-1 are cell adhesion molecules that control leukocyte-endothelial and leukocyte-platelet interactions under inflammatory conditions. CD39 is the dominant vascular nucleotidase that facilitates adenosine generation via extracellular ATP/ADP-phosphohydrolysis. Adenosine signalling is protective in renal IRI, but CD39 catalytic activity is lost with exposure to oxidant stress...
March 25, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28343247/development-of-a-qtl-environment-based-predictive-model-for-node-addition-rate-in-common-bean
#2
Li Zhang, Salvador A Gezan, C Eduardo Vallejos, James W Jones, Kenneth J Boote, Jose A Clavijo-Michelangeli, Mehul Bhakta, Juan M Osorno, Idupulapati Rao, Stephen Beebe, Elvin Roman-Paoli, Abiezer Gonzalez, James Beaver, Jaumer Ricaurte, Raphael Colbert, Melanie J Correll
This work reports the effects of the genetic makeup, the environment and the genotype by environment interactions for node addition rate in an RIL population of common bean. This information was used to build a predictive model for node addition rate. To select a plant genotype that will thrive in targeted environments it is critical to understand the genotype by environment interaction (GEI). In this study, multi-environment QTL analysis was used to characterize node addition rate (NAR, node day(- 1)) on the main stem of the common bean (Phaseolus vulgaris L)...
March 25, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28343220/hemorrhagic-transformations-after-thrombectomy-risk-factors-and-clinical-relevance
#3
Johannes Kaesmacher, Mirjam Kaesmacher, Christian Maegerlein, Claus Zimmer, Alexandra S Gersing, Silke Wunderlich, Benjamin Friedrich, Tobias Boeckh-Behrens, Justus F Kleine
BACKGROUND: Hemorrhagic transformation (HT) is a major complication of acute ischemic stroke, potentially associated with clinical deterioration. We attempted to identify risk factors and evaluated clinical relevance of minor and major HTs following endovascular thrombectomy (ET) in isolated middle cerebral artery (MCA) occlusions. METHODS: This is a retrospective single-center analysis of 409 patients with isolated MCA occlusion treated with ET. Patients' and procedural characteristics, severity of HT according to the European Cooperative Acute Stroke Study criteria, and clinical outcomes were analyzed...
March 25, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28343172/novel-immunoassays-for-detection-of-cuzd1-autoantibodies-in-serum-of-patients-with-inflammatory-bowel-diseases
#4
Sofia Farkona, Antoninus Soosaipillai, Panagiota Filippou, Christos Liaskos, Dimitrios P Bogdanos, Eleftherios P Diamandis, Ivan M Blasutig
BACKGROUND: Pancreatic autoantibodies (PABs) are detected in patients with inflammatory bowel disease (IBD). Their prevalence is higher in Crohn's disease (CrD) than in ulcerative colitis (UC). Glycoprotein 2 (GP2) and, more recently, CUB and zona pellucida-like domain-containing protein 1 (CUZD1) have been identified as target autoantigens of PAB. The clinical utility of CUZD1 autoantibodies has only recently been assessed by indirect immunofluorescence (IIF) assays. In this study, we developed and validated novel immunoassays for the detection of CUZD1 autoantibodies...
March 27, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28343122/genetic-and-epigenetic-variation-of-transposable-elements-in-arabidopsis
#5
REVIEW
Charles J Underwood, Ian R Henderson, Robert A Martienssen
Transposable elements are mobile genetic elements that are prevalent in plant genomes and are silenced by epigenetic modification. Different epigenetic modification pathways play distinct roles in the control of transposable element transcription, replication and recombination. The Arabidopsis genome contains families of all of the major transposable element classes, which are differentially enriched in particular genomic regions. Whole genome sequencing and DNA methylation profiling of hundreds of natural Arabidopsis accessions has revealed that transposable elements exhibit significant intraspecific genetic and epigenetic variation, and that genetic variation often underlies epigenetic variation...
March 23, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28343102/acoustic-and-hybrid-3d-printed-electrochemical-biosensors-for-the-real-time-immunodetection-of-liver-cancer-cells-hepg2
#6
Samar Damiati, Seta Küpcü, Martin Peacock, Christoph Eilenberger, Mazin Zamzami, Ishtiaq Qadri, Hani Choudhry, Uwe B Sleytr, Bernhard Schuster
This study presents an efficient acoustic and hybrid three-dimensional (3D)-printed electrochemical biosensors for the detection of liver cancer cells. The biosensors function by recognizing the highly expressed tumor marker CD133, which is located on the surface of liver cancer cells. Detection was achieved by recrystallizing a recombinant S-layer fusion protein (rSbpA/ZZ) on the surface of the sensors. The fused ZZ-domain enables immobilization of the anti-CD133 antibody in a defined manner. These highly accessible anti-CD133 antibodies were employed as a sensing layer, thereby enabling the efficient detection of liver cancer cells (HepG2)...
March 21, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28342968/heterologous-expression-purification-and-characterization-of-three-novel-esterases-secreted-by-the-lignocellulolytic-fungus-penicillium-purpurogenum-when-grown-on-sugar-beet-pulp
#7
Gabriela Oleas, Eduardo Callegari, Romina Sepúlveda, Jaime Eyzaguirre
The lignocellulolytic fungus, Penicillium purpurogenum, grows on a variety of natural carbon sources, among them sugar beet pulp. Culture supernatants of P. purpurogenum grown on sugar beet pulp were partially purified and the fractions obtained analyzed for esterase activity by zymograms. The bands with activity on methyl umbelliferyl acetate were subjected to mass spectrometry to identify peptides. The peptides obtained were probed against the proteins deduced from the genome sequence of P. purpurogenum...
March 18, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28342912/peanut-oleosins-associated-with-severe-peanut-allergy-importance-of-lipophilic-allergens-for-comprehensive-allergy-diagnostics
#8
Christian Schwager, Skadi Kull, Jochen Behrends, Niels Röckendorf, Frauke Schocker, Andreas Frey, Arne Homann, Wolf-Meinhard Becker, Uta Jappe
BACKGROUND: Peanut allergy is one of the most common and most severe food allergies in Western countries and its accurate diagnosis to prevent potential life-threatening allergic reactions is crucial. However, aqueous extracts used for routine diagnostic measurements are devoid of lipophilic allergens such as oleosins. We have recently succeeded in the isolation and purification of these unique proteins, and the current study evaluates their allergenic potential and clinical relevance...
March 22, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28342851/site-specific-photocoupling-of-pbpa-mutated-scfv-antibodies-for-use-in-affinity-proteomics
#9
Mattias Brofelth, Lars Wagner Städe, Anna Isinger Ekstrand, Linn Petersson Edfeldt, Rebeka Kovačič, Thorbjørn Terndrup Nielsen, Kim Lambertsen Larsen, Laurent Duroux, Christer Wingren
Recombinant antibody libraries can provide a source of renewable and high-performing binders tailored for use in affinity proteomics. In this context, the process of generating site-specific 1:1 tagging/functionalization and/or orientated surface immobilization of antibodies has, however, proved to be challenging. Hence, novel ways of generating such engineered antibodies for use in affinity proteomics could have a major impact on array performance. In this study, we have further tailored the design of human recombinant scFv antibodies for site-specific photocoupling through the use of an unnatural amino acid (UAA) and the Dock'n'Flash technology...
March 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28342665/recombinant-newcastle-disease-virus-expressing-the-infectious-bronchitis-virus-s1-gene-protects-chickens-against-newcastle-disease-virus-and-infectious-bronchitis-virus-challenge
#10
Ran Zhao, Junfeng Sun, Tianming Qi, Wen Zhao, Zongxi Han, Xiaopu Yang, Shengwang Liu
The recombinant LaSota strain expressing a chimeric IBV S1 gene (rLaSota-S1) was constructed with the S1 gene of the LX4 type IBV ck/CH/LDL/091022. The expression of the S1 protein was detected by an indirect immunofluorescence assay and Western blotting. The rLaSota-S1 strain was slightly attenuated, and its growth dynamics were similar to that of the parental LaSota strain. Vaccination of specific pathogen-free chickens with the rLaSota-S1 strain induced NDV hemagglutination inhibition antibodies, and it protected chickens from challenge with virulent NDV...
March 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28342639/sendai-virus-mucosal-vaccination-establishes-lung-resident-memory-cd8%C3%A2-t-cell-immunity-and-boosts-bcg-primed-protection-against-tb-in-mice
#11
Zhidong Hu, Ka-Wing Wong, Hui-Min Zhao, Han-Li Wen, Ping Ji, Hui Ma, Kang Wu, Shui-Hua Lu, Feng Li, Zhong-Ming Li, Tsugumine Shu, Jian-Qing Xu, Douglas B Lowrie, Xiao-Yong Fan
Accumulating evidence has shown the protective role of CD8(+) T cells in vaccine-induced immunity against Mycobacterium tuberculosis (Mtb) despite controversy over their role in natural immunity. However, the current vaccine BCG is unable to induce sufficient CD8(+) T cell responses, especially in the lung. Sendai virus, a respiratory RNA virus, is here engineered firstly as a novel recombinant anti-TB vaccine (SeV85AB) that encodes Mtb immuno-dominant antigens, Ag85A and Ag85B. A single mucosal vaccination elicited potent antigen-specific T cell responses and a degree of protection against Mtb challenge similar to the effect of BCG in mice...
March 22, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28342388/insights-into-the-molecular-and-biological-features-of-the-dutpase-related-gene-of-bovine-immunodeficiency-virus
#12
Yulia Podolny, Eytan Herzig, Amnon Hizi
This study was stimulated by our previous research of the dUTPase-related protein from bovine immunodeficiency virus (BIV) (Voronin et al., 2014). Despite the lack of detectable enzymatic BIV dUTPase activity (both of the recombinant protein and in virions), mutating the dUTPase gene was deleterious to viral production. However, cDNA synthesis and integration were apparently unaffected. Consequently, we have studied here two important issues. First, we showed that in cDNA produced by the dUTPase-mutated virions, the incidence of mutations was not higher than that found in wild-type BIV-infected cells...
March 22, 2017: Virology
https://www.readbyqxmd.com/read/28342359/synergetic-effect-between-adsorption-and-photodegradation-on-nanostructured-tio2-activated-carbon-fiber-felt-porous-composites-for-toluene-removal
#13
Min Li, Bin Lu, Qin-Fei Ke, Ya-Jun Guo, Ya-Ping Guo
The low quantum efficiency and limited adsorption efficiency of TiO2 makes it only fit for the removal of VOCs with low concentrations. Herein, we for the first time fabricated nanostructured TiO2/activated carbon fiber felt (TiO2/ACFF) porous composites by the in situ deposition of TiO2 microspheres on the carbon fibers in ACFF. Interestingly, the TiO2 microspheres exhibit hierarchical nanostructures constructed by nanocrystals as building blocks. The TiO2/ACFF porous composites possess excellent adsorption and photodegradation properties for toluene because of the synergetic effects between the nanostructured TiO2 and ACFF...
March 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28342316/comparison-of-cytomegalovirus-cmv-specific-neutralization-capacity-of-hyperimmunoglobulin-hig-versus-standard-intravenous-immunoglobulin-ivig-preparations-impact-of-cmv-igg-normalization
#14
Matthias Stefan Schampera, Katrin Schweinzer, Harald Abele, Karl Oliver Kagan, Reinhild Klein, Ingo Rettig, Gerhard Jahn, Klaus Hamprecht
BACKGROUND: Based on a non-randomized study of Nigro et al. (2005) the intravenous administration of hyperimmunoglobulins (HIGs) is applied frequently to women with primary CMV-infection as "off-label use" in Germany. OBJECTIVES: In order to describe their CMV-specific neutralization-capacity in vitro, we analyzed the HIG preparations Cytotect(®), and Cytogam(®) as well as the standard intravenous immunoglobulins (IVIG) Octagam(®), Gamunex(®), Kiovig(®). STUDY DESIGN: We performed short-term cell-free CMV neutralization assays (CFNT) and long-term cell-adapted neutralization-plaque-reduction assays (PRANT)...
March 16, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28340525/enhanced-dielectric-environment-sensitivity-of-surface-plasmon-polariton-in-the-surface-barrier-heterostructures-based-on-corrugated-thin-metal-films-with-quasi-anticorrelated-interfaces
#15
Alexander V Korovin, Nicolas L Dmitruk, Sergii V Mamykin, Viktor I Myn'ko, Mariya V Sosnova
A new approach to the formation of a 1D planar periodicity on the front of a plasmonic photodetector based on Schottky barrier is proposed. It allows forming a 1D planar periodicity with corrugation at the "metal/environment" interface by laser interference lithography using embedded chalcogenide wires, whereas the "metal/semiconductor" interface is flat that leads to reducing of surface recombination losses at Shottky barrier in contrary to the conventional technology for forming corrugated metal films on the semiconductor surface requiring chemical etching of the semiconductor substrate...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28340404/synthesis-in-vitro-antiproliferative-activity-and-kinase-profile-of-new-benzimidazole-and-benzotriazole-derivatives
#16
Konrad Chojnacki, Patrycja Wińska, Katarzyna Skierka, Monika Wielechowska, Maria Bretner
Protein kinase 2 (CK2), a member of the serine/threonine kinase family, has been established as a promising target in anticancer therapy. New derivatives of known CK2 inhibitors 4,5,6,7-tetrabromo-1H-benzimidazole (TBBi) and 4,5,6,7-tetrabromo-1H-benzotriazole (TBBt) bearing azide or substituted triazole groups were synthesized. Their influence on the activity of human recombinant CK2α and cytotoxicity against normal and cancer cell lines were evaluated. TBBi derivatives with triazole substituted with carboxyl substituent (7 and 10) exhibited the most potent inhibitory activity against CK2 with Ki value in the range of 1...
March 16, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28340299/bifurcation-of-regeneration-and-recombination-in-dye-sensitized-solar-cells-via-electronic-manipulation-of-tandem-cobalt-redox-shuttles
#17
Josh Baillargeon, Yuling Xie, Thomas W Hamann
A cobalt(IV/III) redox shuttle, cobalt tris(2-(p-tolyl)pyridine), [Co(ptpy)3]+/0, was synthesized and investigated for use in dye-sensitized solar cells, DSSCs. An incredibly fast self-exchange rate constant of (9.2  3.9) × 108 M-1s-1 was determined for [Co(ptpy)3]+/0, making it an ideal candidate for dye regeneration. To avoid fast recombination and solubility limitations, a tandem electrolyte containing [Co(ptpy)3]+/0 and cobalt tris(2,2'-bipyridine), [Co(bpy)3]3+/2+, was utilized. An improved short circuit current density is achieved for DSSCs employing the tandem electrolyte, compared to electrolytes containing only [Co(bpy)3]3+/2+, consistent with superior dye regeneration expected based on predictions using Marcus Theory, which is also discussed...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28340296/ultra-low-surface-recombination-velocity-in-passivated-ingaas-inp-nanopillars
#18
Aura Higuera-Rodriguez, Bruno Romeira, Simone Birindelli, Lachlan E Black, Barry Smalbrugge, Peter J van Veldhoven, Wilhelmus Erwin M M Kessels, Meint K Smit, Andrea Fiore
The III-V semiconductor InGaAs is a key material for photonics since it provides optical emission and absorption in the 1.55 μm telecommunication wavelength window. However, InGaAs suffers from pronounced non-radiative effects associated with its surface states, which affect the performance of nanophotonic devices for optical interconnects, namely nanolasers and nanodetectors. This work reports the strong suppression of surface recombination of undoped InGaAs/InP nanostructured semiconductor pillars using a combination of ammonium sulfide, (NH4)2S, passivation and silicon oxide, SiOx, coating...
March 24, 2017: Nano Letters
https://www.readbyqxmd.com/read/28339983/acr11-is-an-activator-of-plastid-type-glutamine-synthetase-gs2-in-arabidopsis-thaliana
#19
Takashi Osanai, Ayuko Kuwahara, Hitomi Otsuki, Kazuki Saito, Masami Yokota Hirai
Glutamine synthetase (GS) is an important enzyme for nitrogen assimilation, and GS2, encoded by GLN2, is the only plastid-type GS in Arabidopsis thaliana. A co-expression analysis suggested that the expression level of the gene encoding a uridylyltransferase-like protein, ACR11, is strongly correlated with GLN2 expression levels. Here we showed that the recombinant ACR11 protein increased GS2 activity in vitro by reducing the Km values of its substrate glutamine. A T-DNA insertion mutant of ACR11 exhibited a reduced GS activity under low nitrate conditions and reduced glutamine levels...
March 6, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28339926/study-on-the-expression-of-human-lysozyme-in-oviduct-bioreactor-mediated-by-recombinant-avian-adeno-associated-virus1
#20
A P Wang, Y J Wang, S Wu, W Y Zuo, C M Guo, W M Hong, S Y Zhu
Due to its antimicrobial properties and low toxicity, human lysozyme (hLYZ) has broad application in the medical field and as a preservative used by the food industry. However, limited availability hinders its widespread use. Hence, we constructed a recombinant avian adeno-associated virus (rAAAV) that would specifically express hLYZ in the chicken oviduct and harvested hLYZ from the egg whites of laying hens. The oviduct-specific human lysozyme expression cassette flanked by avian adeno-associated virus (AAAV) inverted terminal repeats (ITRs) was subcloned into the modified baculovirus transfer vector pFBX, and then the recombinant baculovirus rBac-ITRLYZ was generated...
March 2, 2017: Poultry Science
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