scholarly journals A Complex Adenovirus-Vectored Vaccine against Rift Valley Fever Virus Protects Mice against Lethal Infection in the Presence of Preexisting Vector Immunity

2009 ◽  
Vol 16 (11) ◽  
pp. 1624-1632 ◽  
Author(s):  
David H. Holman ◽  
Adam Penn-Nicholson ◽  
Danher Wang ◽  
Jan Woraratanadharm ◽  
Mary-Katherine Harr ◽  
...  

ABSTRACT Rift Valley fever virus (RVFV) has been cited as a potential biological-weapon threat due to the serious and fatal disease it causes in humans and animals and the fact that this mosquito-borne virus can be lethal in an aerosolized form. Current human and veterinary vaccines against RVFV, however, are outdated, inefficient, and unsafe. We have incorporated the RVFV glycoprotein genes into a nonreplicating complex adenovirus (CAdVax) vector platform to develop a novel RVFV vaccine. Mice vaccinated with the CAdVax-based vaccine produced potent humoral immune responses and were protected against lethal RVFV infection. Additionally, protection was elicited in mice despite preexisting immunity to the adenovirus vector.

2020 ◽  
Vol 42 (4) ◽  
pp. 529-536
Author(s):  
Oxana Selina ◽  
Ilnaz Imatdinov ◽  
Vera Balysheva ◽  
Roman Akasov ◽  
Alexander Kryukov ◽  
...  

Virology ◽  
2009 ◽  
Vol 385 (2) ◽  
pp. 409-415 ◽  
Author(s):  
Jonas Näslund ◽  
Nina Lagerqvist ◽  
Matthias Habjan ◽  
Åke Lundkvist ◽  
Magnus Evander ◽  
...  

1950 ◽  
Vol 5 (5) ◽  
pp. 243-247
Author(s):  
Minoru MATSUMOTO ◽  
Saburo IWASA ◽  
Motosige ENDO

PLoS ONE ◽  
2015 ◽  
Vol 10 (5) ◽  
pp. e0128215 ◽  
Author(s):  
Nazly Shafagati ◽  
Lindsay Lundberg ◽  
Alan Baer ◽  
Alexis Patanarut ◽  
Katherine Fite ◽  
...  

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Halima Rhazi ◽  
Najete Safini ◽  
Karima Mikou ◽  
Meryeme Alhyane ◽  
Khalid Omari Tadlaoui ◽  
...  

Abstract Background Animal vaccination is an important way to stop the spread of diseases causing immense damage to livestock and economic losses and the potential transmission to humans. Therefore effective method for vaccine production using simple and inexpensive bioprocessing solutions is very essential. Conventional culture systems currently in use, tend to be uneconomic in terms of labor and time involved. Besides, they offer a limited surface area for growth of cells. In this study, the CelCradle™-500A was evaluated as an alternative to replace conventional culture systems in use such as Cell factories for the production of viral vaccines against small ruminant morbillivirus (PPR), rift valley fever virus (RVF) and lumpy skin disease virus (LSD). Results Two types of cells Vero and primary Lamb Testis cells were used to produce these viruses. The study was done in 2 phases as a) optimization of cell growth and b) virus cultivation. Vero cells could be grown to significantly higher cell densities of 3.04 × 109 using the CelCradle™-500A with a shorter doubling time as compared to 9.45 × 108 cells in Cell factories. This represents a 19 fold increase in cell numbers as compared to seeding vs only 3.7 fold in Cell factories. LT cells achieved modestly higher cell densities of 6.7 × 108 as compared to 6.3 × 108 in Cell factories. The fold change in densities for these cells was 3 fold in the CelCradle™-500A vs 2.5 fold in Cell factories. The titers in the conventional system and the bioreactor were not significantly different. However, the Cell-specific virus yield for rift valley fever virus and lumpy skin disease virus are higher (25 virions/cell for rift valley fever virus, and 21.9 virions/cell for lumpy skin disease virus versus 19.9 virions/cell for rift valley fever virus and 10 virions/cell for lumpy skin disease virus). Conclusions This work represents a novel study for primary lamb testis cell culture in CellCradle™-500A bioreactors. In addition, on account of the high cell densities obtained and the linear scalability the titers could be further optimized using other culture process such us perfusion.


2018 ◽  
Vol 12 (5) ◽  
pp. e0006474 ◽  
Author(s):  
Darci R. Smith ◽  
Sara C. Johnston ◽  
Ashley Piper ◽  
Miriam Botto ◽  
Ginger Donnelly ◽  
...  

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