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Contribution of MX dynamin, oligoadenylate synthetase, and protein kinase R to anti-paramyxovirus activity of type-1 interferons in vitro
Leroy, M.; Baise, Etienne; Pire, G. et al.
2007In American Journal of Veterinary Research, 68, p. 988-994
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Abstract :
[en] OBJECTIVE: To determine the contribution of MX dynamin, oligoadenylate synthetase (OAS), and double-stranded RNA-dependent protein kinase R (PKR) to the antiviral effects of type 1 interferons (IFNs) against bovine parainfluenza-3 virus (PI-3V) infection of Vero cells. SAMPLE POPULATION: Vero cell cultures. PROCEDURES: PI-3V yield was first compared between control and transfected type 1 IFNs-incompetent Vero cells expressing recombinant OAS or MX proteins. Afterwards, phosphorylation of eukaryotic initiation factor 2 alpha (eIF2alpha) was used to scale the degree of PKR activation upon infection of Vero cells by PI-3V. RESULTS: Overexpression of OAS did not result in significantly decreased viral replication. Phosphorylated eIF2alpha forms, the hallmark of PKR activation, were not increased in IFNalpha-primed infected Vero cells. Although human MXA contributed to partial blockade of replication of bovine PI-3V, the antiviral effect was not as strong as that of IFNalpha. CONCLUSIONS AND CLINICAL RELEVANCE: The powerful anti-Paramyxovirus activity of type 1 IFNs is mediated by noncanonic pathways.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Leroy, M.
Baise, Etienne ;  Université de Liège - ULiège > Département des sciences de la vie > Macromolécules biologiques
Pire, G.
Desmecht, Daniel ;  Université de Liège - ULiège > Département de morphologie et pathologie > Pathologie spéciale et autopsies
Language :
English
Title :
Contribution of MX dynamin, oligoadenylate synthetase, and protein kinase R to anti-paramyxovirus activity of type-1 interferons in vitro
Publication date :
2007
Journal title :
American Journal of Veterinary Research
ISSN :
0002-9645
eISSN :
1943-5681
Publisher :
American Veterinary Medical Association, Schaumburg, United States - Illinois
Volume :
68
Pages :
988-994
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 December 2009

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