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https://www.readbyqxmd.com/read/28109583/detection-of-recombinant-human-lactoferrin-and-lysozyme-produced-in-a-bitransgenic-cow
#1
Germán G Kaiser, Nicolás C Mucci, Vega González, Lourdes Sánchez, José A Parrón, María D Pérez, Miguel Calvo, Juan F Aller, Federico A Hozbor, Adrián A Mutto
Lactoferrin and lysozyme are 2 glycoproteins with great antimicrobial activity, being part of the nonspecific defensive system of human milk, though their use in commercial products is difficult because human milk is a limited source. Therefore, many investigations have been carried out to produce those proteins in biological systems, such as bacteria, yeasts, or plants. Mammals seem to be more suitable as expression systems for human proteins, however, especially for those that are glycosylated. In the present study, a bicistronic commercial vector containing a goat β-casein promoter and an internal ribosome entry site fragment between the human lactoferrin and human lysozyme genes was developed to allow the introduction of both genes into bovine adult fibroblasts in a single transfection...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28108250/synthesis-of-vorinostat-and-cholesterol-conjugate-to-enhance-the-cancer-cell-uptake-selectivity
#2
Nethrie D Idippily, Chunfang Gan, Paul Orefice, Jane Peterson, Bin Su
Histone deacetylase (HDAC) inhibitors modulate various cellular functions including proliferation, differentiation, and apoptosis. Vorinostat (SuberAniloHydroxamic Acid, SAHA) is the first HDAC inhibitor approved by FDA for cancer treatment. However, SAHA distributes in cancer tissue and normal tissue in similar levels. It will be ideal to selectively deliver SAHA into cancer cells. Rapidly growing cancer cells have a great need of cholesterol. Low-density lipoprotein (LDL) is the major cholesterol carrier in plasma and its uptake is mediated by LDL-receptor (LDL-R), a glycoprotein overexpressed on the surface of cancer cells...
January 10, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28107671/recent-sequence-variation-in-probe-binding-site-affected-detection-of-respiratory-syncytial-virus-group-b-by-real-time-rt-pcr
#3
Everlyn Kamau, Charles N Agoti, Clement S Lewa, John Oketch, Betty E Owor, Grieven P Otieno, Anne Bett, Patricia A Cane, D James Nokes
BACKGROUND: Direct immuno-fluorescence test (IFAT) and multiplex real-time RT-PCR have been central to RSV diagnosis in Kilifi, Kenya. Recently, these two methods showed discrepancies with an increasing number of PCR undetectable RSV-B viruses. OBJECTIVES: Establish if mismatches in the primer and probe binding sites could have reduced real-time RT-PCR sensitivity. STUDY DESIGN: Nucleoprotein (N) and glycoprotein (G) genes were sequenced for real-time RT-PCR positive and negative samples...
January 5, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28104912/paclitaxel-resistant-cancer-cell-derived-secretomes-elicit-abcb1-associated-docetaxel-cross-resistance-and-escape-from-apoptosis-through-foxo3a-driven-glycolytic-regulation
#4
Mark Borris D Aldonza, Ji-Young Hong, Sang Kook Lee
Chemotherapy-induced cancer cell secretomes promote resistance due, in part, to a predominant glycolytic energy metabolism, which drives aggressive cancer cell proliferation. However, the characterization of these secretomes and the molecular events that associate them with acquired drug resistance remain poorly understood. In this study, we show that secretomes of cancer cells with high-level paclitaxel resistance stimulated cell proliferation and suppressed drug-induced apoptosis of drug-sensitive cells. We also found that drug (docetaxel)-stimulated induction of interferon-α (IFN-α), IFN-λ and tumor necrosis factor-α (TNF-α) release in drug-sensitive cells was lowered by these secretomes...
January 20, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28103319/an-hsv-2-trivalent-vaccine-is-immunogenic-in-rhesus-macaques-and-highly-efficacious-in-guinea-pigs
#5
Sita Awasthi, Lauren M Hook, Carolyn E Shaw, Bapi Pahar, Jacob A Stagray, David Liu, Ronald S Veazey, Harvey M Friedman
A genital herpes vaccine is urgently needed to prevent pain and suffering, reduce the incidence of neonatal herpes, and decrease the risk of HIV acquisition and transmission that accompanies genital infection. We evaluated a trivalent HSV-2 subunit antigen vaccine administered with CpG and alum in rhesus macaques and guinea pigs. The vaccine contains glycoproteins C, D and E (gC2, gD2, gE2) to block virus entry by gD2 and immune evasion by gC2 and gE2. In rhesus macaques, the trivalent vaccine induced plasma and mucosa neutralizing antibodies, antibodies that block gC2 and gE2 immune evasion activities, and stimulated CD4 T cell responses...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28096606/phylogenetic-analysis-of-glycoprotein-b-gene-sequences-of-bovine-herpesvirus-1-isolates-from-india-reveals-the-predominance-of-subtype-1-1
#6
S S Patil, A Prajapati, D Hemadri, K P Suresh, G S Desai, G B Manjunatha Reddy, B M Chandranaik, S Ranganatha, H Rahman
AIM: This study was conducted for the isolation and molecular characterization of bovine herpesvirus 1 (BoHV-1) isolated from the nasal and vaginal swabs collected from naturally infected cattle showing clinical symptoms of the respiratory disease. MATERIALS AND METHODS: Isolation of BoHV-1 virus performed on clinical samples collected from 65 cattle from five states of India. The BoHV-1 isolates were further confirmed by polymerase chain reaction (PCR) using primers specific for glycoprotein B (gB) genomic region...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28096373/pathogen-mediated-manipulation-of-arthropod-microbiota-to-promote-infection
#7
Nabil M Abraham, Lei Liu, Brandon Lyon Jutras, Akhilesh K Yadav, Sukanya Narasimhan, Vissagan Gopalakrishnan, Juliana M Ansari, Kimberly K Jefferson, Felipe Cava, Christine Jacobs-Wagner, Erol Fikrig
Arthropods transmit diverse infectious agents; however, the ways microbes influence their vector to enhance colonization are poorly understood. Ixodes scapularis ticks harbor numerous human pathogens, including Anaplasma phagocytophilum, the agent of human granulocytic anaplasmosis. We now demonstrate that A. phagocytophilum modifies the I. scapularis microbiota to more efficiently infect the tick. A. phagocytophilum induces ticks to express Ixodes scapularis antifreeze glycoprotein (iafgp), which encodes a protein with several properties, including the ability to alter bacterial biofilm formation...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28090646/influence-of-p-glycoprotein-on-the-disposition-of-fexofenadine-and-its-enantiomers
#8
Fei Li, Karyn D Howard, Michael J Myers
OBJECTIVES: P-glycoprotein (P-gp) is responsible for the efflux of a broad variety of human and veterinary drugs. Canine P-gp polymorphisms alter drug disposition and toxicity, but their impact on the disposition of enantiomeric drugs is unknown. Using fexofenadine as a model compound, we developed and validated HPLC-fluorescence methods to determine the effect of P-gp on the disposition of fexofenadine and its enantiomers. METHODS: A chiral CD-Ph column was used for the separation of (R) and (S)-fexofenadine...
January 16, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28081371/gwas-identifies-new-loci-for-painful-temporomandibular-disorder
#9
A E Sanders, D Jain, T Sofer, K F Kerr, C C Laurie, J R Shaffer, M L Marazita, L M Kaste, G D Slade, R B Fillingim, R Ohrbach, W Maixner, T Kocher, O Bernhardt, A Teumer, C Schwahn, K Sipilä, R Lähdesmäki, M Männikkö, P Pesonen, M Järvelin, C M Rizzatti-Barbosa, C B Meloto, M Ribeiro-Dasilva, L Diatchenko, P Serrano, S B Smith
Temporomandibular disorder (TMD) is a musculoskeletal condition characterized by pain and reduced function in the temporomandibular joint and/or associated masticatory musculature. Prevalence in the United States is 5% and twice as high among women as men. We conducted a discovery genome-wide association study (GWAS) of TMD in 10,153 participants (769 cases, 9,384 controls) of the US Hispanic Community Health Study/Study of Latinos (HCHS/SOL). The most promising single-nucleotide polymorphisms (SNPs) were tested in meta-analysis of 4 independent cohorts...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28073783/podoplanin-expression-in-primary-brain-tumors-induces-platelet-aggregation-and-increases-risk-of-venous-thromboembolism
#10
Julia Riedl, Matthias Preusser, Pegah Mir Seyed Nazari, Florian Posch, Simon Panzer, Christine Marosi, Peter Birner, Johannes Thaler, Christine Brostjan, Daniela Lötsch, Walter Berger, Johannes A Hainfellner, Ingrid Pabinger, Cihan Ay
Venous thromboembolism (VTE) is common in patients with brain tumors, and underlying mechanisms are unclear. We hypothesized that podoplanin, a sialomucin-like glycoprotein, increases the risk of VTE in primary brain tumors via its ability to induce platelet aggregation. Immunohistochemical staining against podoplanin and intratumoral platelet aggregates was performed in brain tumor specimens of 213 patients (mostly high-grade gliomas [89%]) included in the Vienna Cancer and Thrombosis Study (CATS), a prospective observational cohort study of patients with newly diagnosed cancer or progressive disease aimed at identifying patients at risk of VTE...
January 10, 2017: Blood
https://www.readbyqxmd.com/read/28069824/arta-dependent-processing-of-a-tat-substrate-containing-a-conserved-tripartite-structure-that-is-not-localized-at-the-c-terminus
#11
Mohd Farid Abdul Halim, Jonathan D Stoltzfus, Stefan Schulze, Micheal Hippler, Mechthild Pohlschroder
: Most prokaryotic secreted proteins are transported to the cell surface using either the general secretion (Sec) or twin arginine translocation (Tat) pathway. A majority of secreted proteins are anchored to the cell surface while the remainder are released into the extracellular environment. The anchored surface proteins play a variety of important roles in cellular processes, ranging from facilitating interactions between cells to maintaining cell stability. The extensively studied S-layer glycoprotein (SLG) of Haloferax volcanii, previously thought to be anchored via C-terminal intercalation into the membrane, was recently shown to be lipidated and to have its C-terminal segment removed in processes dependent upon archaeosortase A (ArtA), a recently discovered enzyme...
January 9, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28065804/limited-naturally-occurring-escape-in-broadly-neutralizing-antibody-epitopes-in-hepatitis-c-glycoprotein-e2-and-constrained-sequence-usage-in-acute-infection
#12
Chaturaka Rodrigo, Melanie R Walker, Preston Leung, Auda A Eltahla, Jason Grebely, Gregory J Dore, Tanya Applegate, Kimberly Page, Sunita Dwivedi, Julie Bruneau, Meghan D Morris, Andrea L Cox, William Osburn, Arthur Y Kim, Janke Schinkel, Naglaa H Shoukry, Georg M Lauer, Lisa Maher, Margaret Hellard, Maria Prins, Fabio Luciani, Andrew R Lloyd, Rowena A Bull
Broadly neutralizing antibodies have been associated with spontaneous clearance of the hepatitis C infection as well as viral persistence by immune escape. Further study of neutralizing antibody epitopes is needed to unravel pathways of resistance to virus neutralization, and to identify conserved regions for vaccine design. All reported broadly neutralizing antibody (BNAb) epitopes in the HCV Envelope (E2) glycoprotein were identified. The critical contact residues of these epitopes were mapped onto the linear E2 sequence...
January 5, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28064200/rare-variants-in-gp1bb-are-responsible-for-autosomal-dominant-macrothrombocytopenia
#13
Suthesh Sivapalaratnam, Sarah K Westbury, Jonathan C Stephens, Daniel Greene, Kate Downes, Anne M Kelly, Claire Lentaigne, William J Astle, Eric G Huizinga, Paquita Nurden, Sofia Papadia, Kathelijne Peerlinck, Christopher J Penkett, David J Perry, Catherine Roughley, Ilenia Simeoni, Kathleen Stirrups, Daniel P Hart, R Campbell Tait, Andrew D Mumford, Nihr BioResource, Michael A Laffan, Kathleen Freson, Willem H Ouwehand, Shinji Kunishima, Ernest Turro
The von Willebrand receptor complex, which is composed of the glycoproteins Ibα and Ibβ, V and IX, plays an essential role in the earliest steps in hemostasis. Over the last four decades, it has become apparent that loss of function of any one of three of the genes encoding these glycoproteins namely, GP1BA, GP1BB and GP9, leads to autosomal recessive macrothrombocytopenia complicated by bleeding. A small number of variants in GP1BA have been reported to cause a milder and dominant form of macrothrombocytopenia but only two tentative reports exists of such a variant in GP1BB By analyzing data from a collection of over 1,000 genome-sequenced patients with a rare bleeding and/or platelet disorder, we have identified a significant association between rare monoallelic variants in GP1BB and macrothrombocytopenia...
November 14, 2016: Blood
https://www.readbyqxmd.com/read/28061011/simultaneous-enantiomeric-analysis-of-pharmacologically-active-compounds-in-environmental-samples-by-chiral-lc-ms-ms-with-a-macrocyclic-antibiotic-stationary-phase
#14
D Camacho-Muñoz, B Kasprzyk-Hordern
This paper presents a multi-residue method for direct enantioselective separation of chiral pharmacologically active compounds in environmental matrices. The method is based on chiral liquid chromatography and tandem mass spectrometry detection. Simultaneous chiral discrimination was achieved with a macrocyclic glycopeptide-based column with antibiotic teicoplanin as a chiral selector working under reverse phase mode. For the first time, enantioresolution was reported for metabolites of ibuprofen: carboxyibuprofen and 2-hydroxyibuprofen with this chiral stationary phase...
January 6, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28060576/evagreen-based-multiplex-real-time-pcr-assay-for-rapid-differentiation-of-wild-type-and-glycoprotein-e-deleted-bovine-herpesvirus-1-strains
#15
Sachin S Pawar, Chetan D Meshram, Niraj K Singh, Mohini Saini, B P Mishra, Praveen K Gupta
Bovine herpesvirus-1 (BoHV-1) is an important viral pathogen causing significant economic losses to the cattle industry. Glycoprotein E-deleted marker vaccines form the basis for BoHV-1 control programs widely, wherein detection and differentiation of wild-type and gE-deleted vaccine strains is of crucial importance for proper disease management. In the present study, we report an EvaGreen-based multiplex real-time polymerase chain reaction (EGRT-PCR) assay for rapid differentiation of wild-type and glycoprotein E-deleted strains of BoHV-1...
January 6, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28056966/pseudorabies-virus-infection-aujeszky-s-disease-in-an-iberian-lynx-lynx-pardinus-in-spain-a-case-report
#16
A Javier Masot, María Gil, David Risco, Olga M Jiménez, José I Núñez, Eloy Redondo
BACKGROUND: The only natural hosts of Pseudorabies virus (PRV) are members of the family Suidae (Sus scrofa scrofa). In species other than suids infection is normally fatal. In these mammals, including carnivores, PRV typically causes serious neurologic disease. The endangered Iberian lynx (Lynx pardinus) is a wild feline endemic to south-western Europe (Iberian Peninsula). The Iberian lynx was found to be the world's most endangered felid species in 2002. In wild felines, PRV infection has only been previously reported once in a Florida panther in 1994...
January 5, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28056108/molecular-characterization-of-n-glycan-degradation-and-transport-in-streptococcus-pneumoniae-and-its-contribution-to-virulence
#17
Melissa Robb, Joanne K Hobbs, Shireen A Woodiga, Sarah Shapiro-Ward, Michael D L Suits, Nicholas McGregor, Harry Brumer, Hasan Yesilkaya, Samantha J King, Alisdair B Boraston
The carbohydrate-rich coating of human tissues and cells provide a first point of contact for colonizing and invading bacteria. Commensurate with N-glycosylation being an abundant form of protein glycosylation that has critical functional roles in the host, some host-adapted bacteria possess the machinery to process N-linked glycans. The human pathogen Streptococcus pneumoniae depolymerizes complex N-glycans with enzymes that sequentially trim a complex N-glycan down to the Man3GlcNAc2 core prior to the release of the glycan from the protein by endo-β-N-acetylglucosaminidase (EndoD), which cleaves between the two GlcNAc residues...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28054754/the-stce-metalloprotease-of-enterohaemorrhagic-escherichia-coli-reduces-the-inner-mucus-layer-and-promotes-adherence-to-human-colonic-epithelium-ex-vivo
#18
Claire L Hews, Seav-Ly Tran, Udo Wegmann, Bernard Brett, Alistair D S Walsham, Devon Kavanaugh, Nicole J Ward, Nathalie Juge, Stephanie Schüller
Enterohaemorrhagic E. coli (EHEC) is a major foodborne pathogen and tightly adheres to human colonic epithelium by forming attaching/effacing lesions. To reach the epithelial surface, EHEC must penetrate the thick mucus layer protecting the colonic epithelium. In this study, we investigated how EHEC interacts with the intestinal mucus layer using mucin-producing LS174T colon carcinoma cells and human colonic mucosal biopsies. The level of EHEC binding and A/E lesion formation in LS174T cells was higher compared to mucin-deficient colon carcinoma cell lines, and initial adherence was independent of the presence of flagellin, E...
January 5, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28053228/diverse-evolutionary-patterns-of-pneumococcal-antigens-identified-by-pangenome-wide-immunological-screening
#19
Nicholas J Croucher, Joseph J Campo, Timothy Q Le, Xiaowu Liang, Stephen D Bentley, William P Hanage, Marc Lipsitch
Characterizing the immune response to pneumococcal proteins is critical in understanding this bacterium's epidemiology and vaccinology. Probing a custom-designed proteome microarray with sera from 35 healthy US adults revealed a continuous distribution of IgG affinities for 2,190 potential antigens from the species-wide pangenome. Reproducibly elevated IgG binding was elicited by 208 "antibody binding targets" (ABTs), which included 109 variants of the diverse pneumococcal surface proteins A and C (PspA and PspC) and zinc metalloprotease A and B (ZmpA and ZmpB) proteins...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28052812/newcastle-disease-virus-vectored-infectious-laryngotracheitis-vaccines-protect-commercial-broiler-chickens-in-the-presence-of-maternally-derived-antibodies
#20
Qingzhong Yu, Stephen Spatz, Yufeng Li, Jilong Yang, Wei Zhao, Zhenyu Zhang, Guoyuan Wen, Maricarmen Garcia, Laszlo Zsak
Newcastle disease virus (NDV) recombinants expressing the infectious laryngotracheitis virus (ILTV) glycoproteins B and D have previously been demonstrated to confer complete clinical protection against virulent ILTV and NDV challenges in naive chickens. We extended this study to assess whether maternally derived antibody (MDA) against NDV and ILTV would interfere with protection in vaccinated broiler chickens. Chickens with a mean NDV MDA hemagglutination inhibition (HI) titer of 6.4 (log2) and detectable ILTV neutralization (VN) antibodies at hatch were vaccinated with rLS/ILTV-gB or rLS/ILTV-gD at 1 or 10day of age (DOA) or on both days...
February 1, 2017: Vaccine
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