Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1151984 | ENA |
REPOSITORIES: ENA
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Project description:The cellular transcriptome of C57BL/6 mouse lungs was profiled by mRNA-Seq analysis at multiple time points in response to infection with influenza A/California/04/09 (H1N1), A/Wyoming/03/03 (H3N2), and A/Vietnam/1203/04 (H5N1) HALo virus. The Influenza A/Vietnam/1203/04 (H5N1) HALo mutant virus is an attenuated H5N1 virus generated from wild-type Influenza A/Vietnam/1203/04 (H5N1) virus as described in Steel, J., et al. J Virol. 2009 Feb; 83(4):1742-53. A/Wyoming/03/03 (H3N2) influenza virus replicates poorly in mice and lung tissue collected from mice inoculated with this virus did not carry viral loads detectable by plaque assay.
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Project description:We demonstrated canine influenza virus (H3N2) pathogenicity to dogs using microarray analysis. Many genes related to innate immunity, such as toll-like receptors, immune cells of natural killer cells, macrophages, neutrophils, nitric oxide and reactive oxygen species, and interferon, were induced. RNA was extracted from canine influenza virus H3N2-infected dogs. The lung RNA of uninfected dogs was used as a negative control. We compared gene expression levels between infected and uninfected dogs using microarray analysis.
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Project description:MicroRNAs (miRNAs), a class of noncoding RNAs measuring 18 to 23 nucleotides (nt) that play important regulatory roles in host-virus interactions. Avian-origin H3N2 canine influenza virus (CIV) has emerged as the most prevalent subtype among dogs in Asia since 2007. To evaluate the roles of host miRNAs in H3N2 CIV infection, here, miRNA profiles obtained from primary canine bronchiolar epithelial cells (CBECs) and canine alveolar macrophages (CAMCs) were compared between infected and mock-infected cells with the H3N2 CIV JS/10. It was found that cfa-miR-125b, cfa-miR-151 and cfa-miR-423a expressions were significantly decreased in CIV-infected canine primary cells. Bioinformatics prediction indicated that 5’ seed regions of three miRNAs are partially complementary to the mRNAs of nucleoprotein (NP) and non-structural protein 1 (NS1) of JS/10. As determined by virus titration, quantitative real-time PCR (qRT-PCR) and western blotting, overexpression of cfa-miR-125b and cfa-miR-151 inhibited CIV infection, whereas overexpression or inhibition of cfa-miR-423a inhibited this infection. These results indicated that CIV replication could be regulated by miRNAs from host cells infected with CIV. Our findings support the notion that cellular miRNAs can inhibit virus infection, help to elucidate the resistance of host cells to viral infection and to clarify the pathogenesis of H3N2 CIV. We used microarrays to detail the global programme of gene expression of primary canine alveolar macrophages (CAMCs) compared between infected and mock-infected cells with the H3N2 canine influenza virus (CIV) JS/10.
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Project description:Human tracheobronchial epithelial (HTBE) cells are considered to serve as a good correlate of influenza virus infection in the human respiratory tract. ChIP-Seq analysis was used to profile histone acetylation (H3K27ac) in HTBE cells at multiple time points in response to infection with influenza A/California/04/09 (H1N1), A/Wyoming/03/03 (H3N2), and A/Vietnam/1203/04 (H5N1) HALo virus. The Influenza A/Vietnam/1203/04 (H5N1) HALo mutant virus is an attenuated H5N1 virus generated from wild-type Influenza A/Vietnam/1203/04 (H5N1) virus as described in Steel, J., et al. J Virol. 2009 Feb; 83(4):1742-53.
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Project description:We demonstrated canine influenza virus (H3N2) pathogenicity to dogs using microarray analysis. Many genes related to innate immunity, such as toll-like receptors, immune cells of natural killer cells, macrophages, neutrophils, nitric oxide and reactive oxygen species, and interferon, were induced.
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Project description:Airway epithelial cells are the initial site of infection with influenza viruses. The innate immune responses of airway epithelial cells to infection have the potential to limit virus replication and induce effective adaptive immune responses. However, relatively little is known about the importance of this innate anti-viral response to infection. Avian influenza viruses are a potential source of future pandemics, therefore it is critical to examine the effectiveness of the host anti-viral system to different influenza viruses. We used a human influenza (H3N2) and a low pathogenic avian influenza (H11N9) to assess and compare the anti-viral responses of bronchial epithelial cells (BECs). After infection, the H3N2 virus replicated more effectively than the H11N9 strain in BECs. This was not due to differential expression of different sialic acid residues on BECs but was attributed to the interference of the host anti-viral responses by H3N2. The H3N2 strain induced a delay in anti-viral signaling and impaired release of type I and type III interferons (IFNs) compared to the H11N9 virus. We then transfected the gene encoding for non-structural (NS) 1 protein into the BECs and the H3N2 NS1 induced a greater inhibition of anti-viral responses compared to the H11N9 NS1. While the low pathogenic avian influenza virus was capable of infecting BECs, the human influenza virus replicated more effectively than avian influenza virus in BECs and this may be at least in part due to a differential ability of the two NS1 proteins to inhibit anti-viral responses. This suggests that the subversion of human anti-viral responses may be an important requirement for influenza viruses to adapt to the human host and induce disease.
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Project description:Array analysis of total lung RNAs from female BALB/c mice collected at 12, 48 and 96 h post-infection with highly and less virulent influenza A (H3N2) viruses. Viruses (designated as LVI and HVI) were derived from influenza strain virus A/Aichi/2/68 (Aichi68). LVI is Aichi68 propagated in eggs, and HVI is mouse adapted Aichi68.
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Project description:Human monocyte-derived macrophages (MDM) serve as a model for resident alveolar macrophages (AM) in the human respiratory tract. mRNA-Seq analysis was used to profile the cellular transcriptome of MDM cells at multiple time points in response to infection with influenza A/California/04/09 (H1N1), A/Wyoming/03/03 (H3N2), and A/Vietnam/1203/04 (H5N1) HALo virus. The Influenza A/Vietnam/1203/04 (H5N1) HALo mutant virus is an attenuated H5N1 virus generated from wild-type Influenza A/Vietnam/1203/04 (H5N1) virus as described in Steel, J., et al. J Virol. 2009 Feb; 83(4):1742-53.
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