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Glycoprotein D

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https://www.readbyqxmd.com/read/29346393/computational-study-of-hiv-gp120-as-a-target-for-polyanionic-entry-inhibitors-exploiting-the-v3-loop-region
#1
Louis R Hollingsworth, Anne M Brown, Richard D Gandour, David R Bevan
Multiple approaches are being utilized to develop therapeutics to treat HIV infection. One approach is designed to inhibit entry of HIV into host cells, with a target being the viral envelope glycoprotein, gp120. Polyanionic compounds have been shown to be effective in inhibiting HIV entry, with a mechanism involving electrostatic interactions with the V3 loop of gp120 being proposed. In this study, we applied computational methods to elucidate molecular interactions between the repeat unit of the precisely alternating polyanion, Poly(4,4'-stilbenedicarboxylate-alt-maleic acid) (DCSti-alt-MA) and the V3 loop of gp120 from strains of HIV against which these polyanions were previously tested (IIIb, BaL, 92UG037, JR-CSF) as well as two strains for which gp120 crystal structures are available (YU2, 2B4C)...
2018: PloS One
https://www.readbyqxmd.com/read/29343829/targeted-inhibitors-of-p-glycoprotein-increase-chemotherapeutic-induced-mortality-of-multidrug-resistant-tumor-cells
#2
Amila K Nanayakkara, Courtney A Follit, Gang Chen, Noelle S Williams, Pia D Vogel, John G Wise
Overexpression of ATP-binding cassette (ABC) transporters is often linked to multidrug resistance (MDR) in cancer chemotherapies. P-glycoprotein (P-gp) is one of the best studied drug transporters associated with MDR. There are currently no approved drugs available for clinical use in cancer chemotherapies to reverse MDR by inhibiting P-glycoprotein. Using computational studies, we previously identified several compounds that inhibit P-gp by targeting its nucleotide binding domain and avoiding its drug binding domains...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29342292/clinical-utility-of-the-global-anti-phospholipid-syndrome-score-for-risk-stratification-a-pooled-analysis
#3
Savino Sciascia, Massimo Radin, Giovanni Sanna, Irene Cecchi, Dario Roccatello, Maria Laura Bertolaccini
Objective: Recently, our group conceived a risk score for clinical manifestations of APS (the global APS score, or GAPSS) that takes into account the combination of independent cardiovascular risk factors and the aPL positivity profile. These include hyperlipidaemia, arterial hypertension, aCL, anti-β2 glycoprotein-I, aPS-PT and the LA. A complementary version, the adjusted GAPSS (aGAPSS), which excludes aPS-PT, was also designed. The aim of our study was to systematically review the literature to assess the clinical utility of the GAPSS and aGAPSS for risk stratification of any APS clinical manifestation...
January 12, 2018: Rheumatology
https://www.readbyqxmd.com/read/29340789/fully-sialylated-alpha-chain-of-complement-4-binding-protein-a2160-a-novel-prognostic-marker-for-epithelial-ovarian-carcinoma
#4
Koji Matsuo, Kazuhiro Tanabe, Masae Ikeda, Takeo Shibata, Hiroshi Kajiwara, Masaki Miyazawa, Mariko Miyazawa, Masaru Hayashi, Masako Shida, Takeshi Hirasawa, Lynda D Roman, Mikio Mikami
PURPOSE: Fully sialylated alpha-chain of complement 4-binding protein (A2160) is a member of the glycoprotein family and has recently been identified as a diagnostic biomarker for epithelial ovarian cancer. This study examined the utility of A2160 as a prognostic biomarker for this disease. METHODS: This is a retrospective analysis of prospectively collected plasma samples from 93 women with stage I-IV epithelial ovarian cancer who underwent primary cytoreductive surgery between 2009 and 2014...
January 16, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29340583/functional-analysis-of-the-helicobacter-pullorum-n-linked-protein-glycosylation-system
#5
Adrian J Jervis, Alison G Wood, Joel A Cain, Jonathan A Butler, Helen Frost, Elizabeth Lord, Rebecca Langdon, Stuart J Cordwell, Brendan W Wren, Dennis Linton
N-linked protein glycosylation systems operate in species from all three domains of life. The model bacterial N-linked glycosylation system from Campylobacter jejuni is encoded by pgl genes present at a single chromosomal locus. This gene cluster includes the pglB oligosaccharyltransferase responsible for transfer of glycan from lipid carrier to protein. Although all genomes from species of the Campylobacter genus contain a pgl locus, among the related Helicobacter genus only three evolutionarily related species (H...
January 11, 2018: Glycobiology
https://www.readbyqxmd.com/read/29340221/recombinant-antibodies-to-the-ebola-virus-glycoprotein
#6
A A Panina, I G Dementieva, T K Aliev, V A Toporova, D S Balabashin, M N Bokov, L P Pozdnyakova, O B Shchemchukova, D A Dolgikh, P G Sveshnikov, M P Kirpichnikov
Currently, there are no approved therapies for targeted prevention and treatment of Ebola hemorrhagic fever. In the present work, we describe the development of a eukaryotic expression system for the production of three full-length chimeric antibodies (IgG1-kappa isotypes) GPE118, GPE325, and GPE534 to the recombinant glycoprotein of the Ebola virus (EBOV GP), which is a key factor in the pathogenicity of the disease. The immunochemical properties of the obtained antibodies were studied by immunoblotting and indirect, direct, and competitive ELISA using the recombinant EBOV proteins rGPdTM, NP, and VP40...
October 2017: Acta Naturae
https://www.readbyqxmd.com/read/29339444/light-hvem-signaling-in-keratinocytes-controls-development-of-dermatitis
#7
Rana Herro, Jr-Wen Shui, Sonja Zahner, Daniel Sidler, Yuko Kawakami, Toshiaki Kawakami, Koji Tamada, Mitchell Kronenberg, Michael Croft
Dermatitis is often associated with an allergic reaction characterized by excessive type 2 responses leading to epidermal acanthosis, hyperkeratosis, and dermal inflammation. Although factors like IL-4, IL-13, and thymic stromal lymphopoietin (TSLP) are thought to be instrumental for the development of this type of skin disorder, other cytokines may be critical. Here, we show that the tumor necrosis factor (TNF) superfamily protein LIGHT (homologous to lymphotoxin, exhibits inducible expression, and competes with HSV glycoprotein D for binding to HVEM, a receptor expressed on T lymphocytes) is required for experimental atopic dermatitis, and LIGHT directly controls keratinocyte hyperplasia, and production of periostin, a matricellular protein that contributes to the clinical features of atopic dermatitis as well as other skin diseases such as scleroderma...
January 16, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29338778/increased-whole-blood-ffa2-gpr43-receptor-expression-is-associated-with-increased-30-day-survival-in-patients-with-sepsis
#8
Zyad J Carr, Andry Van De Louw, Graham Fehr, Jialiu D Li, Allen Kunselman, Victor Ruiz-Velasco
OBJECTIVE: Sepsis is a condition associated with a dysregulated inflammatory response to infection with significant morbidity. Recent advances have elucidated the vital role that the short chain fatty acid glycoprotein receptor 43 (FFA2/GPR43) plays in inflammatory and immunomodulatory pathways. We hypothesized that elevated whole blood GPR43 RNA expression would be associated with increased 30-day survival in patients admitted with sepsis. Patients (n = 93) admitted to the intensive care unit with the diagnosis of sepsis underwent quantitative real time PCR within 48 h of intensive care unit admission...
January 16, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29336455/5-vitamin-b12-derivatives-suitable-for-bioconjugation-via-the-amide-bond
#9
A Jackowska, M Chromiński, M Giedyk, D Gryko
Vitamin B12 is an attractive candidate for a drug or an imaging-agent carrier into cells, due to its dietary uptake and well established transport through glycoproteins. Utilization of this system requires an appropriate functionalization of vitamin B12 that both allows for the conjugation of therapeutics and does not interrupt its recognition by transport proteins. Modifications at the 5'-position on the ribose moiety are among a few approaches which meet the criteria. In this article we present vitamin B12 derivatives bearing either the amino or the carboxylic group at the 5'-position...
January 16, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29336366/potential-value-of-datura-stramonium-agglutinin-recognized-glycopatterns-in-urinary-protein-on-differential-diagnosis-of-diabetic-nephropathy-and-nondiabetic-renal-disease
#10
Xiao-Li Yang, Han-Jie Yu, Han-Yu Zhu, Ying Zheng, Qiu-Xia Han, Guang-Yan Cai, Xiang-Mei Chen
BACKGROUND: Diabetic nephropathy (DN) is the most common and serious microvascular complication of diabetes. To date, the gold standard for identifying DN and nondiabetic renal disease (NDRD) is a renal biopsy; however, there is currently no reliable diagnostic marker to identify DN and NDRD in a noninvasive manner. This study aimed to investigate the different glycopatterns in urine specimens of DN patients and NDRD patients for a differential diagnosis. METHODS: In total, 19 DN patients and 18 NDRD patients who underwent renal biopsies between March 2015 and March 2016 at the Chinese People's Liberation Army General Hospital were enrolled in this study...
January 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29333575/a-phase-1-dose-escalation-study-of-pf-06664178-an-anti-trop-2-aur0101-antibody-drug-conjugate-in-patients-with-advanced-or-metastatic-solid-tumors
#11
Gentry T King, Keith D Eaton, Brandon R Beagle, Christopher J Zopf, Gilbert Y Wong, Heike I Krupka, Steven Y Hua, Wells A Messersmith, Anthony B El-Khoueiry
Purpose and Methods Trop-2 is a glycoprotein over-expressed in many solid tumors but at low levels in normal human tissue, providing a potential therapeutic target. We conducted a phase 1 dose-finding study of PF-06664178, an antibody-drug conjugate that targets Trop-2 for the selective delivery of the cytotoxic payload Aur0101. The primary objective was to determine the maximum tolerated dose and recommended phase 2 dose. Secondary objectives included further characterization of the safety profile, pharmacokinetics and antitumor activity...
January 15, 2018: Investigational New Drugs
https://www.readbyqxmd.com/read/29322688/phylodynamics-of-classical-swine-fever-virus-with-emphasis-on-ecuadorian-strains
#12
A D Garrido Haro, M Barrera Valle, A Acosta, F J Flores
Classic swine fever virus (CSFV) is a Pestivirus from the Flaviviridae family that affects pigs worldwide and is endemic in several Latin American countries. However, there are still some countries in the region, including Ecuador, for which CSFV molecular information is lacking. To better understand the epidemiology of CSFV in the Americas, sequences from CSFVs from Ecuador were generated and a phylodynamic analysis of the virus was performed. Sequences for the full-length glycoprotein E2 gene of twenty field isolates were obtained and, along with sequences from strains previously described in the Americas and from the most representative strains worldwide, were used to analyse the phylodynamics of the virus...
January 10, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29321320/hiv-1-specific-iga-monoclonal-antibodies-from-an-hiv-1-vaccinee-mediate-galcer-blocking-and-phagocytosis
#13
Saintedym Wills, Kwan-Ki Hwang, Pinghuang Liu, S Moses Dennison, Matthew Zirui Tay, Xiaoying Shen, Justin Pollara, Judith T Lucas, Robert Parks, Supachai Rerks-Ngarm, Punnee Pitisuttithum, Sorachai Nitayapan, Jaranit Kaewkungwal, Rasmi Thomas, Jerome H Kim, Nelson L Michael, Merlin L Robb, Mike McRaven, David C Montefiori, Thomas J Hope, Hua-Xin Liao, M Anthony Moody, Guido Ferrari, Barton F Haynes, S Munir Alam, Mattia Bonsignori, Georgia D Tomaras
Vaccine-elicited humoral immune responses comprise an array of antibody forms and specificities with only a fraction contributing to protective host immunity. Elucidation of antibody effector functions responsible for protective immunity against HIV-1 acquisition is a major goal for the HIV-1 vaccine field. Immunoglobulin A (IgA) is an important part of the host defense against pathogens; however, little is known about the role of vaccine-elicited IgA and their capacity to mediate antiviral functions. To identify the antiviral functions of HIV-1-specific IgA elicited by vaccination, we cloned HIV-1 envelope specific IgA monoclonal antibodies by memory B cell cultures from peripheral blood mononuclear cells from an RV144 vaccinee and produced two IgA clonal cell lines (HG129 and HG130) producing native, non-recombinant IgA monoclonal antibodies (mAbs)...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29313728/the-potential-of-currently-unavailable-herpes-virus-vaccines
#14
Július Rajcáni, Ferenc Bánáti, Kálmán Szenthe, Susan Szathmary
Despite overwhelming experimental work, there are no licensed vaccines against the most frequent Alphaherpesviruses, namely herpes simplex virus 1 and 2 (HSV1 and 2) nor against the Epstein-Barr virus (EBV), a member of the subfamily Gammaherpesvirus. Areas covered: Since the DNAs of both HSVs reside in the regional sensory ganglia in a latent state (i.e. as circularized episomal molecules), a corresponding vaccine might be useful for immunotherapy rather than prevention of primary infection. Here we describe the design of a purified subunit vaccine (a mix of at least 3 glycoproteins) as well as the preparation and efficacy of a recombinant fusion protein consisting of the gD ectodomain from our domestic attenuated HSV1 strain HSZP...
January 9, 2018: Expert Review of Vaccines
https://www.readbyqxmd.com/read/29310678/computational-analysis-of-envelope-glycoproteins-from-diverse-geographical-isolates-of-bovine-leukemia-virus-identifies-highly-conserved-peptide-motifs
#15
Aneta Pluta, Lorraine M Albritton, Marzena Rola-Łuszczak, Jacek Kuźmak
BACKGROUND: Bovine leukemia virus (BLV) is a deltaretrovirus infecting bovine B cells and causing enzootic bovine leucosis. The SU or surface subunit, gp51, of its envelope glycoprotein is involved in receptor recognition and virion attachment. It contains the major neutralizing and CD4+ and CD8+ T cell epitopes found in naturally infected animals. In this study, we aimed to determine global variation and conservation within gp51 in the context of developing an effective global BLV vaccine...
January 8, 2018: Retrovirology
https://www.readbyqxmd.com/read/29303554/a-serological-point-of-care-test-for-the-detection-of-igg-antibodies-against-ebola-virus-in-human-survivors
#16
Polina Brangel, Ariel Sobarzo, Claudio Parolo, Benjamin S Miller, Philip D Howes, Sigal Gelkop, Julius J Lutwama, John M Dye, Rachel A McKendry, Leslie Lobel, Molly M Stevens
Ebola virus disease causes widespread and highly fatal epidemics in human populations. Today, there is still great need for point-of-care tests for diagnosis, patient management and surveillance, both during and post outbreaks. We present a point-of-care test comprising an immunochromatographic strip and a smartphone reader, which detects and semiquantifies Ebola-specific antibodies in human survivors. We developed a Sudan virus glycoprotein monoplex platform and validated it using sera from 90 human survivors and 31 local noninfected controls...
January 5, 2018: ACS Nano
https://www.readbyqxmd.com/read/29302007/rapid-genome-shrinkage-in-a-self-fertile-nematode-reveals-sperm-competition-proteins
#17
Da Yin, Erich M Schwarz, Cristel G Thomas, Rebecca L Felde, Ian F Korf, Asher D Cutter, Caitlin M Schartner, Edward J Ralston, Barbara J Meyer, Eric S Haag
To reveal impacts of sexual mode on genome content, we compared chromosome-scale assemblies of the outcrossing nematode Caenorhabditis nigoni to its self-fertile sibling species, C. briggsaeC. nigoni's genome resembles that of outcrossing relatives but encodes 31% more protein-coding genes than C. briggsaeC. nigoni genes lacking C. briggsae orthologs were disproportionately small and male-biased in expression. These include the male secreted short (mss) gene family, which encodes sperm surface glycoproteins conserved only in outcrossing species...
January 5, 2018: Science
https://www.readbyqxmd.com/read/29301517/biopanning-of-polypeptides-binding-to-bovine-ephemeral-fever-virus-g1-protein-from-phage-display-peptide-library
#18
Peili Hou, Guimin Zhao, Chengqiang He, Hongmei Wang, Hongbin He
BACKGROUND: The bovine ephemeral fever virus (BEFV) glycoprotein neutralization site 1 (also referred as G1 protein), is a critical protein responsible for virus infectivity and eliciting immune-protection, however, binding peptides of BEFV G1 protein are still unclear. Thus, the aim of the present study was to screen specific polypeptides, which bind BEFV G1 protein with high-affinity and inhibit BEFV replication. METHODS: The purified BEFV G1 was coated and then reacted with the M13-based Ph...
January 4, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29300155/antigenic-site-changes-in-the-rabies-virus-glycoprotein-dictates-functionality-and-neutralizing-capability-against-divergent-lyssaviruses
#19
J S Evans, D Selden, G Wu, E Wright, D L Horton, A R Fooks, A C Banyard
Lyssavirus infection has a near 100 % case fatality rate following the onset of clinical disease, and current rabies vaccines confer protection against all reported phylogroup I lyssaviruses. However, there is little or no protection against more divergent lyssaviruses and so investigation into epitopes within the glycoprotein (G) that dictate a neutralizing response against divergent lyssaviruses is warranted. Importantly, the facilities required to work with these pathogens, including wild-type and mutated forms of different lyssaviruses, are scarcely available and, as such, this type of study is inherently difficult to perform...
January 4, 2018: Journal of General Virology
https://www.readbyqxmd.com/read/29299165/gata3-induced-vwf-upregulation-in-the-lung-adenocarcinoma-vasculature
#20
Yinghua Xu, Silin Pan, Jing Liu, Fengyun Dong, Zuowang Cheng, Jinjin Zhang, Ruixia Qi, Qi Zang, Caiqing Zhang, Xia Wang, Jiandong Zhang, Fufang Wang, Thaddeus D Allen, Ju Liu
Lung adenocarcinoma (LAC) is the leading cause of cancer-related death worldwide. Aberrant expression of genes expressed preferentially in the lung tumor vasculature may yield clues for prognosis and treatment. Von Willebrand factor (vWF) is a large multifunctional glycoprotein with a well-known function in hemostasis. However, vWF has been reported to exert an anti-tumor effect, independent of its role in hemostasis. We investigated the expression of vWF in LAC through immunohistochemical staining of tumor tissue microarrays (TMAs)...
December 15, 2017: Oncotarget
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