Interferon type I response in porcine reproductive and respiratory syndrome virus-infected MARC-145 cells

Interferon type I response in porcine reproductive and respiratory syndrome virus-infected... Infection by porcine reproductive and respiratory syndrome virus (PRRSV) results in a weak induction of the innate immune response. There are many genes that collectively comprise this response and the extent to which each gene responds to PRRSV infection is unclear and warrants further investigation. To this end, we have utilized real-time PCR using SYBR Green I dye-based detection to quantify transcript abundance of the type I interferons (IFN-α and -β) and IFN-β transcriptional enhanceasome genes. In MARC-145 cells, both IFN-α and -β transcript abundance were unaffected by PRRSV infection. However, stimulation of MARC-145 cells by exogenous double-stranded RNA, resulted in significant increases in transcript abundance of both IFN-α and -β as well as IFN-β enhanceasome components, indicating that a type I IFN response could be induced in these cells. The double-stranded RNA induction of type I IFN transcription was significantly inhibited by dual-exposure with PRRSV. These results suggest that PRRSV infection directly interferes with type I IFN transcriptional activation early in its pathway, at the level of IFN-β gene transcription. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Interferon type I response in porcine reproductive and respiratory syndrome virus-infected MARC-145 cells

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Publisher
Springer-Verlag
Copyright
Copyright © 2004 by Springer-Verlag/Wien
Subject
Biomedicine; Medical Microbiology; Virology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-004-0377-9
Publisher site
See Article on Publisher Site

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