tetano
Editor, Senior Moderator
Vet Immunol Immunopathol. 2019 Dec 9;220:109992. doi: 10.1016/j.vetimm.2019.109992. [Epub ahead of print] [h=1]Transcriptomic profile of chicken bone marrow-derive dendritic cells in response to H9N2 avian influenza A virus.[/h]
Liu Q[SUP]1[/SUP], Yang J[SUP]2[/SUP], Huang X[SUP]2[/SUP], Liu Y[SUP]2[/SUP], Han K[SUP]2[/SUP], Zhao D[SUP]2[/SUP], Zhang L[SUP]2[/SUP], Li Y[SUP]3[/SUP].
[h=3]Author information[/h] 1 Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, and Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, Jiangsu, 50 Zhongling Street, 210014, China. Electronic address: taoqingliu2013@163.com. 2 Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, and Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, Jiangsu, 50 Zhongling Street, 210014, China. 3 Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, and Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, Jiangsu, 50 Zhongling Street, 210014, China. Electronic address: muziyin08@163.com.
[h=3]Abstract[/h] Avian influenza subtype H9N2 infection is a mild but highly contagious disease that is associated with a decrease in the efficacy of vaccine interventions, and an increase in susceptibility to secondary infections in poultry. However, the immune evasion mechanism of H9N2 avian influenza viruses (AIVs) in chickens is poorly understood. Dendritic cells (DCs) are immune cells of major importance, involved in innate immune responses against viruses, but also in the setting of adaptive immune response due to their high ability to present viral antigen. Therefore, in the present study we used high-throughput RNA-sequencing technology at the transcriptome level to identify the differentially expressed genes (DEGs) between chicken DCs infected with H9N2 virus and mock-infected DCs. We identified 4151 upregulated DEGs and 2138 downregulated DEGs. Further enrichment analysis showed that the upregulated DEGs were enriched in the biological processes mainly involved in signal transduction, transmembrane transport, and innate immune/inflammatory responses. In contrast, the downregulated DEGs were associated with the biological processes mainly including metabolic process, and MHC class I antigen processing and presentation. In addition, 49 of these immune-related DEGs were validated by reverse transcription quantitative PCR (RT-qPCR). Collectively, these data suggest that H9N2 virus infection may enhance the signal transduction, and innate immune responses in chicken DCs, but impair their metabolic functions and antigen-presenting responses, which provide helpful insight into the pathogenesis of H9N2 AIVs in chickens and managing this infection in poultry farms.
Copyright ? 2019. Published by Elsevier B.V.
[h=4]KEYWORDS:[/h] Antigen presentation; Dendritic cell; H9N2 avian influenza A virus; Innate immune response; RNA-sequencing
PMID: 31846798 DOI: 10.1016/j.vetimm.2019.109992
Liu Q[SUP]1[/SUP], Yang J[SUP]2[/SUP], Huang X[SUP]2[/SUP], Liu Y[SUP]2[/SUP], Han K[SUP]2[/SUP], Zhao D[SUP]2[/SUP], Zhang L[SUP]2[/SUP], Li Y[SUP]3[/SUP].
[h=3]Author information[/h] 1 Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, and Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, Jiangsu, 50 Zhongling Street, 210014, China. Electronic address: taoqingliu2013@163.com. 2 Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, and Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, Jiangsu, 50 Zhongling Street, 210014, China. 3 Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, and Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, Jiangsu, 50 Zhongling Street, 210014, China. Electronic address: muziyin08@163.com.
[h=3]Abstract[/h] Avian influenza subtype H9N2 infection is a mild but highly contagious disease that is associated with a decrease in the efficacy of vaccine interventions, and an increase in susceptibility to secondary infections in poultry. However, the immune evasion mechanism of H9N2 avian influenza viruses (AIVs) in chickens is poorly understood. Dendritic cells (DCs) are immune cells of major importance, involved in innate immune responses against viruses, but also in the setting of adaptive immune response due to their high ability to present viral antigen. Therefore, in the present study we used high-throughput RNA-sequencing technology at the transcriptome level to identify the differentially expressed genes (DEGs) between chicken DCs infected with H9N2 virus and mock-infected DCs. We identified 4151 upregulated DEGs and 2138 downregulated DEGs. Further enrichment analysis showed that the upregulated DEGs were enriched in the biological processes mainly involved in signal transduction, transmembrane transport, and innate immune/inflammatory responses. In contrast, the downregulated DEGs were associated with the biological processes mainly including metabolic process, and MHC class I antigen processing and presentation. In addition, 49 of these immune-related DEGs were validated by reverse transcription quantitative PCR (RT-qPCR). Collectively, these data suggest that H9N2 virus infection may enhance the signal transduction, and innate immune responses in chicken DCs, but impair their metabolic functions and antigen-presenting responses, which provide helpful insight into the pathogenesis of H9N2 AIVs in chickens and managing this infection in poultry farms.
Copyright ? 2019. Published by Elsevier B.V.
[h=4]KEYWORDS:[/h] Antigen presentation; Dendritic cell; H9N2 avian influenza A virus; Innate immune response; RNA-sequencing
PMID: 31846798 DOI: 10.1016/j.vetimm.2019.109992