Abstract
To gain a better understanding of the genetic changes required for attenuation of duck enteritis virus (DEV), the Chinese standard challenge strain of DEV (DEV CSC) was serially passaged 80 times in chick embryo fibroblasts. We plaque-purified the virus after the 25th passage (DEV p25) and the 80th passage (DEV p80) and investigated its in vitro and in vivo properties. Average plaque sizes for DEV p25 and p80 were significantly smaller than those for their parental DEV CSC. The results from an in vivo experiment revealed that DEV p25 and p80 were avirulent in ducks and protected them from virulent DEV challenge. The complete genome sequence of DEV p80 was determined and compared with that of the parent virus. An 1801-bp deletion was identified in the genome of DEV p80, which affected the genes encoding gI and gE. Moreover, there were 11 base substitutions, which led to seven amino acid changes in open reading frames LORF9, UL51, UL9, UL7, UL4, ICP4 and US3. Further DNA sequence analysis showed that the 1801-bp deletion was also present in DEV p25. Our findings suggest that DEV gE and/or gI are nonessential for virus growth and might, as with other herpesviruses, play an important role in cell-to-cell spread and virulence. Our experiments provide more genetic information about DEV attenuation and further advance our understanding of the molecular basis of DEV pathogenesis.
Similar content being viewed by others
References
Baudet AERF (1923) Mortality in ducks in the Netherlands caused by a filterable virus Fowl plague. Tijdschr Diergeneeskd 50:455–459
Damiani AM, Matsumura T, Yokoyama N, Mikami T, Takahashi E (2000) A deletion in the gI and gE genes of equine herpesvirus type 4 reduces viral virulence in the natural host and affects virus transmission during cell-to-cell spread. Virus Res 67:189–202
Dardiri AH (1969) Attenuation of duck plague virus and its propagation in cell culture. Arch Gesamte Virusforsch 27:55–64
Dingwell KS, Brunetti CR, Hendricks RL, Tang Q, Tang M, Rainbow AJ, Johnson DC (1994) Herpes simplex virus glycoproteins E and I facilitate cell-to-cell spread in vivo and across junctions of cultured cells. J Virol 68:834–845
Flowers CC, O’Callaghan DJ (1992) The equine herpesvirus type 1 (EHV-1) homolog of herpes simplex virus type 1 US9 and the nature of a major deletion within the unique short segment of the EHV-1 KyA strain genome. Virology 190:307–315
Huang YX (1959) Study on duck plague-like disease. J South China Agric Univ 1:1–12
Jacobs L, Rziha HJ, Kimman TG, Gielkens AL, Van Oirschot JT (1993) Deleting valine-125 and cysteine-126 in glycoprotein gI of pseudorabies virus strain NIA-3 decreases plaque size and reduces virulence in mice. Arch Virol 131:251–264
Kaashoek MJ, Moerman A, Madic J, Rijsewijk FA, Quak J, Gielkens AL, van Oirschot JT (1994) A conventionally attenuated glycoprotein E-negative strain of bovine herpesvirus type 1 is an efficacious and safe vaccine. Vaccine 12:439–444
Kalaimathi R, Janakiram D (1989) Adaptation of a virulent strain of duck plague virus to chicken embryo fibroblast cell culture. Indian Vet J 66:1001–1004
Kruger JM, Sussman MD, Maes RK (1996) Glycoproteins gl and gE of feline herpesvirus-1 are virulence genes: safety and efficacy of a gl-gE deletion mutant in the natural host. Virology 220:299–308
Li Y, Huang B, Ma X, Wu J, Li F, Ai W, Song M, Yang H (2009) Molecular characterization of the genome of duck enteritis virus. Virology 391:151–161
Liu J, Chen P, Jiang Y, Wu L, Zeng X, Tian G, Ge J, Kawaoka Y, Bu Z, Chen H (2011) A duck enteritis virus-vectored bivalent live vaccine provides fast and complete protection against H5N1 avian influenza virus infection in ducks. J Virol 85:10989–10998
Lomniczi B, Watanabe S, Ben-Porat T, Kaplan AS (1984) Genetic basis of the neurovirulence of pseudorabies virus. J Virol 52:198–205
Margulies M, Egholm M, Altman WE, Attiya S, Bader JS, Bemben LA, Berka J, Braverman MS, Chen YJ, Chen Z, Dewell SB, Du L, Fierro JM, Gomes XV, Godwin BC, He W, Helgesen S, Ho CH, Irzyk GP, Jando SC, Alenquer ML, Jarvie TP, Jirage KB, Kim JB, Knight JR, Lanza JR, Leamon JH, Lefkowitz SM, Lei M, Li J, Lohman KL, Lu H, Makhijani VB, McDade KE, McKenna MP, Myers EW, Nickerson E, Nobile JR, Plant R, Puc BP, Ronan MT, Roth GT, Sarkis GJ, Simons JF, Simpson JW, Srinivasan M, Tartaro KR, Tomasz A, Vogt KA, Volkmer GA, Wang SH, Wang Y, Weiner MP, Yu P, Begley RF, Rothberg JM (2005) Genome sequencing in microfabricated high-density picolitre reactors. Nature 437:376–380
Matsumura T, O’Callaghan DJ, Kondo T, Kamada M (1996) Lack of virulence of the murine fibroblast adapted strain, Kentucky A (KyA), of equine herpesvirus type 1 (EHV-1) in young horses. Vet Microbiol 48:353–365
Matsumura T, Kondo T, Sugita S, Damiani AM, O’Callaghan DJ, Imagawa H (1998) An equine herpesvirus type 1 recombinant with a deletion in the gE and gI genes is avirulent in young horses. Virology 242:68–79
Mettenleiter TC, Lukacs N, Rziha HJ (1985) Pseudorabies virus avirulent strains fail to express a major glycoprotein. J Virol 56:307–311
Mettenleiter TC, Zsak L, Kaplan AS, Ben-Porat T, Lomniczi B (1987) Role of a structural glycoprotein of pseudorabies in virus virulence. J Virol 61:4030–4032
Mijnes JDF, de Groot RJ (1999) Structure-function analysis of the feline herpesvirus virulence factors gE and gI. Vet Microbiol 69:89–91
Neidhardt H, Schroder CH, Kaerner HC (1987) Herpes simplex virus type 1 glycoprotein E is not indispensable for viral infectivity. J Virol 61:600–603
Otsuka H, Xuan X (1996) Construction of bovine herpesvirus-1 (BHV-1) recombinants which express pseudorabies virus (PRV) glycoproteins gB, gC, gD, and gE. Arch Virol 141:57–71
Petrovskis EA, Timmins JG, Gierman TM, Post LE (1986) Deletions in vaccine strains of pseudorabies virus and their effect on synthesis of glycoprotein gp63. J Virol 60:1166–1169
Sandhu TS, Metwally SA (2008) Duck Virus Enteritis (Duck Plague). In: Saif YM (ed) Diseases of poultry. Blackwell Publishing, Singapore, pp 384–393
Sinzger C, Knapp J, Schmidt K, Kahl M, Jahn G (1999) A simple and rapid method for preparation of viral DNA from cell associated cytomegalovirus. J Virol Methods 81:115–122
Spieker JO, Yuill TM, Burgess EC (1996) Virulence of six strains of duck plague virus in eight waterfowl species. J Wildl Dis 32:453–460
Sussman MD, Maes RK, Kruger JM, Spatz SJ, Venta PJ (1995) A feline herpesvirus-1 recombinant with a deletion in the genes for glycoproteins gI and gE is effective as a vaccine for feline rhinotracheitis. Virology 214:12–20
van Engelenburg FA, Kaashoek MJ, Rijsewijk FA, van den Burg L, Moerman A, Gielkens AL, van Oirschot JT (1994) A glycoprotein E deletion mutant of bovine herpesvirus 1 is avirulent in calves. J Gen Virol 75(Pt 9):2311–2318
Wang J, Hoper D, Beer M, Osterrieder N (2011) Complete genome sequence of virulent duck enteritis virus (DEV) strain 2085 and comparison with genome sequences of virulent and attenuated DEV strains. Virus Res 160:316–325
Wu Y, Cheng A, Wang M, Yang Q, Zhu D, Jia R, Chen S, Zhou Y, Wang X, Chen X (2012) Complete genomic sequence of Chinese virulent duck enteritis virus. J Virol 86:5965
Wu Y, Cheng A, Wang M, Zhu D, Jia R, Chen S, Zhou Y, Chen X (2012) Comparative genomic analysis of duck enteritis virus strains. J Virol 86:13841–13842
Yang C, Li Q, Li J, Zhang G, Li H, Xia Y, Yang H, Yu K (2014) Comparative genomic sequence analysis between a standard challenge strain and a vaccine strain of duck enteritis virus in China. Virus Genes 48:296–303
Acknowledgments
This work was supported by the Important Animal Pathogens and Biological Reference Substance Research Program (#2008FY130100) from the Chinese Ministry of Science and Technology.
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Yang, C., Li, J., Li, Q. et al. Biological properties of a duck enteritis virus attenuated via serial passaging in chick embryo fibroblasts. Arch Virol 160, 267–274 (2015). https://doi.org/10.1007/s00705-014-2275-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00705-014-2275-0