scholarly journals Equine Alphaherpesviruses Require Activation of the Small GTPases Rac1 and Cdc42 for Intracellular Transport

2020 ◽  
Vol 8 (7) ◽  
pp. 1013
Author(s):  
Oleksandr Kolyvushko ◽  
Maximilian A. Kelch ◽  
Nikolaus Osterrieder ◽  
Walid Azab
Keyword(s):  
Intracellular Transport ◽  
Virus Entry ◽  
Small Gtpases ◽  
Productive Infection ◽  
Herpesvirus Type ◽  
Viral Transport ◽  
Equine Herpesvirus Type 1 ◽  
Surface Signaling ◽  
Cell Surface Signaling

Viruses utilize host cell signaling to facilitate productive infection. Equine herpesvirus type 1 (EHV-1) has been shown to activate Ca2+ release and phospholipase C upon contact with α4β1 integrins on the cell surface. Signaling molecules, including small GTPases, have been shown to be activated downstream of Ca2+ release, and modulate virus entry, membrane remodeling and intracellular transport. In this study, we show that EHV-1 activates the small GTPases Rac1 and Cdc42 during infection. The activation of Rac1 and Cdc42 is necessary for virus-induced acetylation of tubulin, effective viral transport to the nucleus, and cell-to-cell spread. We also show that inhibitors of Rac1 and Cdc42 did not block virus entry, but inhibited overall virus infection. The Rac1 and Cdc42 signaling is presumably orthogonal to Ca2+ release, since Rac1 and Cdc42 inhibitors affected the infection of both EHV-1 and EHV-4, which do not bind to integrins.

scholarly journals Evaluation of a vectored equine herpesvirus type 1 (EHV-1) vaccine expressing H3 haemagglutinin in the protection of dogs against canine influenza

Vaccine ◽  
2008 ◽  
Vol 26 (19) ◽  
pp. 2335-2343 ◽  
Author(s):  
Cristina Rosas ◽  
Gerlinde R. Van de Walle ◽  
Stephan M. Metzger ◽  
Karin Hoelzer ◽  
Edward J. Dubovi ◽  
...  
Keyword(s):  
Equine Herpesvirus ◽  
Herpesvirus Type ◽  
Equine Herpesvirus Type ◽  
Equine Herpesvirus Type 1 ◽  
Canine Influenza

scholarly journals Evaluation of the vaccine potential of an equine herpesvirus type 1 vector expressing bovine viral diarrhea virus structural proteins

2007 ◽  
Vol 88 (3) ◽  
pp. 748-757 ◽  
Author(s):  
Cristina T. Rosas ◽  
Patricia König ◽  
Martin Beer ◽  
Edward J. Dubovi ◽  
B. Karsten Tischer ◽  
...  
Keyword(s):  
Bovine Viral Diarrhea Virus ◽  
Structural Proteins ◽  
Bovine Viral Diarrhea ◽  
Equine Herpesvirus ◽  
Herpesvirus Type ◽  
Diarrhea Virus ◽  
Viral Diarrhea ◽  
Equine Herpesvirus Type 1 ◽  
Viral Diarrhea Virus

Bovine viral diarrhea virus (BVDV) is an economically important pathogen of cattle that is maintained in the population by persistently infected animals. Virus infection may result in reproductive failure, respiratory disease and diarrhoea in naïve, susceptible bovines. Here, the construction and characterization of a novel vectored vaccine, which is based on the incorporation of genes encoding BVDV structural proteins (C, Erns, E1, E2) into a bacterial artificial chromosome of the equine herpesvirus type 1 (EHV-1) vaccine strain RacH, are reported. The reconstituted vectored virus, rH_BVDV, expressed BVDV structural proteins efficiently and was indistinguishable from parental vector virus with respect to growth properties in cultured cells. Intramuscular immunization of seronegative cattle with rH_BVDV resulted in induction of BVDV-specific serum neutralizing and ELISA antibodies. Upon experimental challenge infection of immunized calves with the heterologous BVDV strain Ib SE5508, a strong anamnestic boost of the neutralizing-antibody response was observed in all vaccinated animals. Immunized animals presented with reduced viraemia levels and decreased nasal virus shedding, and maintained higher leukocyte counts than mock-vaccinated controls.

Late-Term Abortion, Stillbirth, and Neonatal Foal Death in Kyrgyzstan: First Isolation of Equine Herpesvirus Type 1 in the Country

2017 ◽  
Vol 51 ◽  
pp. 46-53
Author(s):  
Maksat Akhmedzhanov ◽  
Rysbek Nurgaziev ◽  
Jailobek Orozov ◽  
Irmgard Moser ◽  
Nikolaus Osterrieder ◽  
...  
Keyword(s):  
Equine Herpesvirus ◽  
Herpesvirus Type ◽  
Equine Herpesvirus Type ◽  
Equine Herpesvirus Type 1

Recombinant Glycoprotein B of Equine herpesvirus Type 1 Elicits Protective Immune Response against Challenge in BALB/c Mouse Model

2021 ◽  
Author(s):  
Alok Joshi ◽  
R.P. Gupta ◽  
Selvaraj Pavulraj ◽  
Bidhan Chandra Bera ◽  
Taruna Anand ◽  
...  
Keyword(s):  
Immune Response ◽  
Plasmid Dna ◽  
Protective Immune Response ◽  
Glycoprotein B ◽  
Equine Herpesvirus ◽  
Recombinant Glycoprotein ◽  
Herpesvirus Type ◽  
Equine Herpesvirus Type ◽  
Equine Herpesvirus Type 1

Background: Equine herpesvirus type 1 (EHV-1) is the most important viral pathogen of equines, causing respiratory illness, abortion, neonatal foal mortality and neurologic disorders. Large numbers of commercial EHV-1 vaccines are available to protect equines from the disease, but they provide only partial protection. Despite immunization with inactivated and modified live virus vaccine, mares show abortions. Present study was aimed to investigate the immunogenicity and protective efficacy of EHV-1 recombinant glycoprotein B (rgB) and gB expressing plasmid DNA against EHV-1 infection in BALB/c mice model.Methods: About 3-4 weeks old 225 female BALB/c mice were selected for the comparative study of immunization followed by challenged with EHV-1/India/Tohana/96-2 strain virus in 5 different groups of 45 animals each.Result: Following immunization, rgB vaccinated mice showed optimal stimulation of EHV-1 gB specific cell mediated and humoral mediated immunity (HMI and CMI). The gB expressing plasmid DNA vaccinated mice developed only CMI while inactivated whole virus vaccinated mice had only HMI. Upon EHV-1 challenge, all infected mice displayed variable levels of clinical signs with changes in body weight, however, vaccinated mice showed very rapid recovery with optimal protection. Positive control group mice showed severe pulmonary lesions along with persistence virus infection till 5 days post challenge (dpc) whereas vaccinated mice had less pulmonary lesion only up to 3dpc. Minimal lung lesions and early virus clearance was observed in the rgB immunized mice in comparison to the gB plasmid DNA and inactivated EHV-1 vaccine immunized mice. It has been concluded that immunization with rgB elicits optimum protective immune response against EHV-1 infection in mice model. The rgB could be a potential vaccine candidate against EHV-1 infection in equine in the future.

scholarly journals A retrospective study on equine herpesvirus type-1 associated myeloencephalopathy in France (2008–2011)

2015 ◽  
Vol 179 (3-4) ◽  
pp. 304-309 ◽  
Author(s):  
Gaby van Galen ◽  
Agnes Leblond ◽  
Pierre Tritz ◽  
Ludovic Martinelle ◽  
Stéphane Pronost ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Equine Herpesvirus ◽  
Herpesvirus Type ◽  
Equine Herpesvirus Type ◽  
Equine Herpesvirus Type 1
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