Differential expression of the type I interferon pathway during persistent and transient bovine viral diarrhea virus infection. 2009

Megan L Shoemaker, and Natalia P Smirnova, and Helle Bielefeldt-Ohmann, and Kathleen J Austin, and Alberto van Olphen, and Jeffrey A Clapper, and Thomas R Hansen
Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, Colorado 80523, USA.

Persistent infection with bovine viral diarrhea virus (BVDV) serves as a reservoir for the perpetuation of infection in cattle populations and causes a range of adverse effects on the health of the host. To study the interactions of the virus with the host, gene expression was compared in the blood of persistently infected (PI) and uninfected steer, and in the blood and tissues of PI fetuses, transiently infected (TI), and uninfected bovine fetuses. Microarray analysis of PI steer blood revealed differential gene expression indicative of an interferon (IFN) response including genes involved in cell cycle regulation, which may contribute to long-term adverse effects. Upregulation of IFN-stimulated genes (e.g., ISG15, PKR) and RNA helicases (RIG-I, LGP2, MDA-5) was identified in both PI fetal and steer blood in comparison to controls, indicating a continued stimulation of the innate antiviral response as a result of the persistent viremia. ISG15 was studied in further detail, implicating reticular cells as basal producers of ISG15 in the spleen, in addition to endothelial and macrophage-like cells in infected spleen. Consequences of chronic IFN pathway activation in PI cattle may include growth- and immunosuppression, the pathogenesis of which is still poorly understood. This study lends new insights into the interactions between BVDV and its host, and can serve as a model for studies of the role of the IFN system in persistent infections.

UI MeSH Term Description Entries
D007370 Interferon Type I Interferon secreted by leukocytes, fibroblasts, or lymphoblasts in response to viruses or interferon inducers other than mitogens, antigens, or allo-antigens. They include alpha- and beta-interferons (INTERFERON-ALPHA and INTERFERON-BETA). Interferons Type I,Type I Interferon,Type I Interferons,Interferon, Type I,Interferons, Type I
D001908 Diarrhea Viruses, Bovine Viral A group of viruses in the genus PESTIVIRUS, causing diarrhea, fever, oral ulcerations, hemorrhagic syndrome, and various necrotic lesions among cattle and other domestic animals. The two species (genotypes), BVDV-1 and BVDV-2 , exhibit antigenic and pathological differences. The historical designation, BVDV, consisted of both (then unrecognized) genotypes. Bovine Viral Diarrhea Viruses,Diarrhea Virus, Bovine Viral,Bovine Diarrhea Virus,Bovine Pestivirus,Bovine Diarrhea Viruses,Bovine Pestiviruses,Diarrhea Virus, Bovine,Diarrhea Viruses, Bovine,Pestiviruses, Bovine,Virus, Bovine Diarrhea,Viruses, Bovine Diarrhea
D001912 Bovine Virus Diarrhea-Mucosal Disease Acute disease of cattle caused by the bovine viral diarrhea viruses (DIARRHEA VIRUSES, BOVINE VIRAL). Often mouth ulcerations are the only sign but fever, diarrhea, drop in milk yield, and loss of appetite are also seen. Severity of clinical disease varies and is strain dependent. Outbreaks are characterized by low morbidity and high mortality. Mucosal Disease, Bovine Viral Diarrhea,Bovine Virus Diarrhea Mucosal Disease
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D005260 Female Females
D005333 Fetus The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN. Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D005796 Genes A category of nucleic acid sequences that function as units of heredity and which code for the basic instructions for the development, reproduction, and maintenance of organisms. Cistron,Gene,Genetic Materials,Cistrons,Genetic Material,Material, Genetic,Materials, Genetic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013154 Spleen An encapsulated lymphatic organ through which venous blood filters.
D014766 Viremia The presence of viruses in the blood. Viremias

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