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Viral glycoprotein-D

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https://www.readbyqxmd.com/read/28404844/intramuscular-immunization-of-mice-with-the-live-attenuated-herpes-simplex-virus-type-1-hsv-1-vaccine-strain-vc2-expressing-the-equine-herpesvirus-1-ehv-1-glycoprotein-d-gd-generates-anti-ehv-1-immune-responses-in-mice
#1
Shiliang A Liu, Brent A Stanfield, Vladimir N Chouljenko, Shan Naidu, Ingeborg Langohr, Fabio Del Piero, Jacqueline Ferracone, Alma A Roy, Konstantin G Kousoulas
Vaccination remains the best option to combat EHV-1 infection and several different strategies of vaccination have been investigated and developed over the past decades. Herein, we report that the live-attenuated Herpes Simplex Virus Type-1 (HSV-1) VC2 vaccine strain, which has been shown to be unable to enter into neurons and establish latency in mice, can be utilized as a vector for the heterologous expression of the Equine Herpesvirus-1 (EHV-1) glycoprotein D (gD), and that intramuscular immunization of mice resulted in strong anti-viral humoral and cellular immune responses...
April 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28396205/entry-inhibition-of-hsv-1-and-2-protects-mice-from-viral-lethal-challenge
#2
Nicola Clementi, Elena Criscuolo, Francesca Cappelletti, Paola Quaranta, Mauro Pistello, Roberta A Diotti, Giuseppe A Sautto, Alexander W Tarr, Federico Mailland, Daniela Concas, Roberto Burioni, Massimo Clementi, Nicasio Mancini
The present study focused on inhibition of HSV-1 and -2 replication and pathogenesis in vitro and in vivo, through the selective targeting of the envelope glycoprotein D. Firstly, a human monoclonal antibody (Hu-mAb#33) was identified that could neutralise both HSV-1 and -2 at nM concentrations, including clinical isolates from patients affected by different clinical manifestations and featuring different susceptibility to acyclovir in vitro. Secondly, the potency of inhibition of both infection by cell-free viruses and cell-to-cell virus transmission was also assessed...
April 8, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28381567/the-cbl-e3-ligase-mediates-the-removal-of-nectin-1-from-the-surface-of-the-herpes-simplex-virus-type-1-infected-cells
#3
Thibaut Deschamps, Christos Dogrammatzis, Ranajoy Mullick, Maria Kalamvoki
The Cbl E3 ligase has been linked to the down-modulation of surface signaling responses by inducing internalization of surface receptors. The adaptor protein CIN85 is a partner of Cbl that augments many of these interactions. Previously, an interaction was demonstrated between ICP0 and CIN85, which results in the removal of EGFR from the surface of the infected cells with a concomitant attenuation of EGFR signaling. Here, we examined whether Cbl mediates the removal of the herpes simplex virus 1 (HSV-1) entry receptor Nectin-1 from the surface of infected cells...
April 5, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28378925/evaluation-of-recombinant-adenovirus-vaccines-based-on-glycoprotein-d-and-truncated-ul25-against-herpes-simplex-virus-type-2-in-mice
#4
Wei Liu, Yan Zhou, Ziyan Wang, Zeqiang Zhang, Qizhi Wang, Weiheng Su, Yan Chen, Yan Zhang, Feng Gao, Chunlai Jiang, Wei Kong
The high prevalence of herpes simplex virus 2 (HSV-2) infections in humans necessitates the development of a safe and effective vaccine that will need to induce vigorous T-cell responses to control the viral infection and transmission. We designed rAd-gD2rAd-gD2▵UL25rAd-▵UL25 to investigate whether recombinant replication-defective adenoviruses vaccine could induce specific T cell responses and protect mice against intravaginal HSV-2 challenge compared with FI-HSV-2. The recombinant adenovirus-based HSV-2 showed higher reductions in mortality and stronger antigen-specific T cell responses compared with FI-HSV-2 and the severity of genital lesions in the mice immunized with rAd-gD2▵UL25 was significantly decreased via eliciting IFN-γ-secreting T responses compared with rAd-gD2 and rAd-▵UL25 group in present study...
April 5, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28326469/hsv-1-interaction-to-3-o-sulfated-heparan-sulfate-in-mouse-derived-drg-explant-and-profiles-of-inflammatory-markers-during-virus-infection
#5
Harsh Sharthiya, Chanmoly Seng, T H Van Kuppevelt, Vaibhav Tiwari, Michele Fornaro
The molecular mechanism of herpes simplex virus (HSV) entry and the associated inflammatory response in the nervous system remain poorly understood. Using mouse-derived ex vivo dorsal root ganglia (DRG) explant model and single cell neurons (SCNs), in this study, we provided a visual evidence for the expression of heparan sulfate (HS) and 3-O-sulfated heparan sulfate (3-OS HS) followed by their interactions with HSV-1 glycoprotein B (gB) and glycoprotein D (gD) during cell entry. Upon heparanase treatment of DRG-derived SCN, a significant inhibition of HSV-1 entry was observed suggesting the involvement of HS role during viral entry...
March 21, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28320973/structure-of-the-infectious-salmon-anemia-virus-receptor-complex-illustrates-a-unique-binding-strategy-for-attachment
#6
Jonathan D Cook, Azmiri Sultana, Jeffrey E Lee
Orthomyxoviruses are an important family of RNA viruses, which include the various influenza viruses. Despite global efforts to eradicate orthomyxoviral pathogens, these infections remain pervasive. One such orthomyxovirus, infectious salmon anemia virus (ISAV), spreads easily throughout farmed and wild salmonids, constituting a significant economic burden. ISAV entry requires the interplay of the virion-attached hemagglutinin-esterase and fusion glycoproteins. Preventing infections will rely on improved understanding of ISAV entry...
April 4, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28316015/expression-and-characterization-of-codon-optimized-crimean-congo-hemorrhagic-fever-virus-gn-glycoprotein-in-insect-cells
#7
Mehdi Rahpeyma, Alireza Samarbaf-Zadeh, Manoochehr Makvandi, Ata A Ghadiri, Stuart D Dowall, Fatemeh Fotouhi
Crimean-Congo hemorrhagic fever virus (CCHFV) is a major cause of tick-borne viral hemorrhagic disease in the world. Despite of its importance as a deadly pathogen, there is currently no licensed vaccine against CCHF disease. The attachment glycoprotein of CCHFV (Gn) is a potentially important target for protective antiviral immune responses. To characterize the expression of recombinant CCHFV Gn in an insect-cell-based system, we developed a gene expression system expressing the full-length coding sequence under a polyhedron promoter in Sf9 cells using recombinant baculovirus...
March 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28261207/investigating-substitutions-in-antibody-antigen-complexes-using-molecular-dynamics-a-case-study-with-broad-spectrum-influenza-a-antibodies
#8
William D Lees, Lenka Stejskal, David S Moss, Adrian J Shepherd
In studying the binding of host antibodies to the surface antigens of pathogens, the structural and functional characterization of antibody-antigen complexes by X-ray crystallography and binding assay is important. However, the characterization requires experiments that are typically time consuming and expensive: thus, many antibody-antigen complexes are under-characterized. For vaccine development and disease surveillance, it is often vital to assess the impact of amino acid substitutions on antibody binding...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28250127/attenuated-human-parainfluenza-virus-type-1-expressing-ebola-virus-glycoprotein-gp-administered-intranasally-is-immunogenic-in-african-green-monkeys
#9
Matthias Lingemann, Xueqiao Liu, Sonja Surman, Bo Liang, Richard Herbert, Ashley D Hackenberg, Ursula J Buchholz, Peter L Collins, Shirin Munir
The recent 2014-2016 Ebola virus (EBOV) outbreak prompted increased efforts to develop vaccines against EBOV disease. We describe the development and preclinical evaluation of an attenuated recombinant human parainfluenza virus type 1 (rHPIV1) expressing the membrane-anchored form of EBOV glycoprotein GP, as an intranasal (IN) EBOV vaccine. GP was codon optimized and expressed either as a full-length protein or an engineered chimeric form in which its transmembrane and cytoplasmic tail (TMCT) domains were substituted with those of the HPIV1 F protein in an effort to enhance packaging into the vector particle and immunogenicity...
March 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28237822/shrnas-targeting-either-the-glycoprotein-or-polymerase-genes-inhibit-viral-haemorrhagic-septicaemia-virus-replication-in-zebrafish-zf4-cells
#10
Brian D Clarke, Kenneth A McColl, Alister C Ward, Timothy J Doran
Viral haemorrhagic septicaemia virus (VHSV) represents an important disease of finfish. To explore the potential of shRNAs to combat this disease nucleotide sequences of either the VHSV glycoprotein (G) or polymerase (L) gene were targeted. To test their function, shRNAs were expressed in zebrafish epithelial ZF-4 cells utilizing the zebrafish U6-2 promoter. Five of the six shRNA molecules successfully reduced VHSV replication by between 2 and 4 logs in titre relative to an irrelevant control shRNA at all MOIs and also reduced viral CPE at the highest MOI...
February 24, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28228587/prophylactic-herpes-simplex-virus-2-hsv-2-vaccines-adjuvanted-with-stable-emulsion-and-toll-like-receptor-9-agonist-induce-a-robust-hsv-2-specific-cell-mediated-immune-response-protect-against-symptomatic-disease-and-reduce-the-latent-viral-reservoir
#11
Michael T Hensel, Jason D Marshall, Michael R Dorwart, Darren S Heeke, Eileen Rao, Padmaja Tummala, Li Yu, Gary H Cohen, Roselyn J Eisenberg, Derek D Sloan
Several prophylactic vaccines targeting HSV-2 have failed in the clinic to demonstrate a sustained depression in viral shedding or protection from recurrences. Although these vaccines have generated high titers of neutralizing antibodies, their induction of robust CD8 T cells has largely been unreported, even though evidence for the importance of HSV-2 antigen-specific CD8 T cells is mounting in animal models and in translational studies involving subjects with active HSV-2-specific immune responses. We developed a subunit vaccine composed of the neutralizing antibody (nAb) targets gD and gB, the novel T cell antigen and tegument protein UL40, and we compared this to a whole-inactivated virus vaccine (FI-HSV-2)...
February 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28225652/dna-vaccination-partially-protects-muskellunge-against-viral-hemorrhagic-septicemia-virus-vhsv-ivb
#12
Elena V Millard, Ashley M Bourke, Scott E LaPatra, Travis O Brenden, Scott D Fitzgerald, Mohamed Faisal
A DNA vaccine containing the glycoprotein (G) gene of the North American viral hemorrhagic septicemia virus (VHSV) genotype IVb was developed to evaluate the immune response of fish following vaccination and evaluate its efficacy in protecting a susceptible species, the Muskellunge Esox masquinongy, against VHSV-IVb challenge. Seven weeks (539 degree-days) following vaccination with 10 μg of either pVHSivb-G or a control plasmid, Muskellunge were challenged by immersion with 10(5) plaque-forming units (pfu)/mL of VHSV-IVb...
March 2017: Journal of Aquatic Animal Health
https://www.readbyqxmd.com/read/28194842/infectivity-inhibition-by-overlapping-synthetic-peptides-derived-from-the-gh-gl-heterodimer-of-herpes-simplex-virus-type-1
#13
Gianluigi Franci, Annarita Falanga, Carla Zannella, Veronica Folliero, Francesca Martora, Marilena Galdiero, Stefania Galdiero, Giancarlo Morelli, Massimiliano Galdiero
Herpes simplex virus (HSV) is a human pathogen that infects epithelial cells. The cutaneous lesions, caused by the virus, spread to the nervous system creating several complications. Fusion of host membranes with the viral envelope is mandatory and mediated by a group of glycoproteins conserved in all Herpesviridae subfamilies, such as the glycoproteins B (gB), H (gH), L (gL) and D (gD). We investigated the inhibitory activity mediated by synthetic overlapping peptides spanning the entire ectodomains of gH and gL glycoproteins...
February 14, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28179907/a-dna-vaccine-formulated-with-chemical-adjuvant-provides-partial-protection-against-bovine-herpes-virus-infection-in-cattle
#14
Valeria Quattrocchi, Ivana Soria, Cecilia Ana Langellotti, Victoria Gnazzo, Mariela Gammella, Dadin P Moore, Patricia I Zamorano
Bovine herpesvirus-1 (BoHV-1) is the causative agent of bovine infectious rhinotracheitis, an important disease worldwide. Although conventional BoHV-1 vaccines, including those based on the use of modified live virus and also inactivated vaccines, are currently used in many countries, they have several disadvantages. DNA vaccines have emerged as an attractive approach since they have the potential to induce both humoral and cellular immune response; nevertheless, it is largely known that potency of naked DNA vaccines is limited...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28152326/safety-and-immunogenicity-of-gamevac-combi-a-heterologous-vsv-and-ad5-vectored-ebola-vaccine-an-open-phase-i-ii-trial-in-healthy-adults-in-russia
#15
I V Dolzhikova, O V Zubkova, A I Tukhvatulin, A S Dzharullaeva, N M Tukhvatulina, D V Shcheblyakov, M M Shmarov, E A Tokarskaya, Y V Simakova, D A Egorova, D N Scherbinin, I L Tutykhina, A A Lysenko, A V Kostarnoy, P G Gancheva, T A Ozharovskaya, B V Belugin, L V Kolobukhina, V B Pantyukhov, S I Syromyatnikova, I V Shatokhina, T V Sizikova, I G Rumyantseva, A F Andrus, N V Boyarskaya, A N Voytyuk, V F Babira, S V Volchikhina, D A Kutaev, A N Bel'skih, K V Zhdanov, S M Zakharenko, S V Borisevich, D Y Logunov, B S Naroditsky, A L Gintsburg
Ebola hemorrhagic fever, also known as Ebola virus disease or EVD, is one of the most dangerous viral diseases in humans and animals. In this open-label, dose-escalation clinical trial, we assessed the safety, side effects, and immunogenicity of a novel, heterologous prime-boost vaccine against Ebola, which was administered in 2 doses to 84 healthy adults of both sexes between 18 and 55 years. The vaccine consists of live-attenuated recombinant vesicular stomatitis virus (VSV) and adenovirus serotype-5 (Ad5) expressing Ebola envelope glycoprotein...
March 4, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28126619/enhancement-of-glycoprotein-based-dna-vaccine-for-viral-hemorrhagic-septicemia-virus-vhsv-via-addition-of-the-molecular-adjuvant-ddx41
#16
Jassy Mary S Lazarte, Young Rim Kim, Jung Seok Lee, Se Pyeong Im, Si Won Kim, Jae Wook Jung, Jaesung Kim, Woo Jai Lee, Tae Sung Jung
The use of molecular adjuvants to improve the immunogenicity of DNA vaccines has been thoroughly studied in recent years. Glycoprotein (G)-based DNA vaccines had been proven to be effective in combating infection against Rhabdovirus (especially infectious hematopoietic necrosis virus, IHNV) in salmonids. DDX41 is a helicase known to induce antiviral and inflammatory responses by inducing a type I IFN innate immune response. To gain more information regarding G-based DNA vaccines in olive flounder (Paralicthys olivaceus), we tried to develop a more efficient G-based DNA vaccine by adding a molecular adjuvant, DDX41...
March 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28119397/misdirection-of-endosomal-trafficking-mediated-by-herpes-simplex-virus-encoded-glycoprotein-b
#17
Naima Niazy, Sebastian Temme, Derya Bocuk, Carmen Giesen, Angelika König, Nadine Temme, Angelique Ziegfeld, Tone F Gregers, Oddmund Bakke, Thorsten Lang, Anna M Eis-Hübinger, Norbert Koch
Herpes simplex virus (HSV)-encoded glycoprotein B (gB) is the most abundant protein in the viral envelope and promotes fusion of the virus with the cellular membrane. In the present study, we found that gB impacts on the major histocompatibility complex (MHC)-II pathway of antigen presentation by fostering homotypic fusion of early endosomes and trapping MHC-II molecules in these altered endosomes. By using an overexpression approach, we demonstrated that transient expression of gB induces giant vesicles of early endosomal origin, which contained Rab5, early endosomal antigen 1 (EEA1), large amounts of MHC-II molecules [human leukocyte antigen (HLA)-DR, and HLA-DM] but no CD63...
January 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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
#18
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...
April 2017: Infection, Genetics and Evolution
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
#19
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
#20
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
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