Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Lungs of ferrets infected with either an H3N2 or H5N1 subtype of influenza A virus.

ABSTRACT: A global genomics approach was used to identify patterns of immune dysregulation during H5N1 influenza virus infection as the host response, in particular hyperchemokinemia, is thought to contribute to the extreme pathology associated with this disease. Keywords: time course Ferrets were inoculated intranasally with 10(6) EID50 of either A/Vietnam/1203/04 (H5N1) or A/Panama/2007/99 (H3N2). At 2, 4 and 6 days post-infection (DPI), ferrets were euthanized and lung tissue was excised for RNA purification and subsequent gene expression analysis.

ORGANISM(S): Mustela putorius furo

SUBMITTER: Longsi Ran

PROVIDER: E-GEOD-9606 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Gene expression analysis of host innate immune responses during Lethal H5N1 infection in ferrets.

Cameron Cheryl M CM Cameron Mark J MJ Bermejo-Martin Jesus F JF Ran Longsi L Xu Luoling L Turner Patricia V PV Ran Ran R Danesh Ali A Fang Yuan Y Chan Pak-Kei M PK Mytle Nutan N Sullivan Timothy J TJ Collins Tassie L TL Johnson Michael G MG Medina Julio C JC Rowe Thomas T Kelvin David J DJ

Journal of virology 20080806 22

How viral and host factors contribute to the severe pathogenicity of the H5N1 subtype of avian influenza virus infection in humans is poorly understood. We identified three clusters of differentially expressed innate immune response genes in lungs from H5N1 (A/Vietnam/1203/04) influenza virus-infected ferrets by oligonucleotide microarray analysis. Interferon response genes were more strongly expressed in H5N1-infected ferret lungs than in lungs from ferrets infected with the less pathogenic H3N ...[more]

PMID: 18684821

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Project description:Background: Type I interferons (IFNs) are essential to the clearance of viral diseases, in part by initiating upregulation of IFN regulated genes (IRGs). A clear distinction between genes upregulated directly by virus and genes upregulated by secondary IFN production has not been made. Here we investigated the genes regulated by IFN-a2b compared to the genes regulated by SARS-CoV infection in ferrets. Methods: We characterized early host immune responses in peripheral blood and lung necropsies of ferrets injected with IFN-a2b or infected with SARS-CoV/Tor 2 strain, using microarray analysis on the Affymetrix platform. Results: We identified a common IRG signature that was upregulated in both SARS-CoV infected ferrets as well as in ferrets injected with IFN-a2b. We also identified unique patterns of gene expression for leukocyte activation, cell adhesion and complement pathways between IFN-a2b injection and SARS-CoV infection. Conclusions: Our results define the effects of IFN-a2b on the immune system of ferrets highlighting genes regulated by IFN during SARS-CoV infection. We have shown the similarities and differences of top funcional gene groups as well as pathways that play key roles in early immune responses in ferrets in response to IFN-a2b or SARS-CoV. Key words: ferret, gene expression, SARS, interferon. Keywords: time course In experiments with IFN-a2b, for peripheral blood, 15 ferrets were randomly allocated to 3 groups: Day 0, 5 ferrets (no IFN injection), day 1, 6 ferrets (injected), and day 2, 4 ferrets (injected). For lung necropsies of injected ferrets with IFN-a2b, we used 12 ferrets in 3 groups: 4 ferrets, day 0 (no IFN injection), 4 ferrets, day 1 (injected) and 4 ferrets, day 2 (injected). Experimental groups for SARS-CoV infection was as follows: For peripheral blood, 3 and 4 ferrets for day 0 (no infection) and day 2 (infection) respectively. For lung neceropsies, a total of 9 ferrets in 3 groups, each with 3 replicates for day 0 (no infection), day 1 (infection) and day 2 (infection).

Dataset Information

Lungs of ferrets infected with either an H3N2 or H5N1 subtype of influenza A virus.

Publications

Gene expression analysis of host innate immune responses during Lethal H5N1 infection in ferrets.

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