PMID- 35259598 OWN - NLM STAT- MEDLINE DCOM- 20220406 LR - 20220406 IS - 1873-2542 (Electronic) IS - 0378-1135 (Linking) VI - 267 DP - 2022 Apr TI - Inhibition of the antigen-presenting ability of dendritic cells by non-structural protein 2 of influenza A virus. PG - 109392 LID - S0378-1135(22)00062-1 [pii] LID - 10.1016/j.vetmic.2022.109392 [doi] AB - Influenza A viruses (IAV), including human IAV and avian IAV (H9N2 subtype), are recurring of influenza outbreaks worldwide in a wide range of mammalian and avian species. Dendritic cells (DCs) are specialised antigen presenting cells. Although DCs can take up IAV and transmit it to other cells, it still unclear why DCs do not effectively present IAV antigens. In this study, we found that Non-structural protein 2 (NS2) of IAV inhibited the maturation and antigen-presenting ability of DCs. We then examined a potential involvement of microRNAs (miRNAs). Analyses of avian DCs stimulated with avian IAV identified 9 upregulated and 10 downregulated miRNAs. However, nearly none microRNA has been significantly altered by NS2 stimulation. Moreover, we found that NS2 binds to exportin 5 (Xpo5), which inhibited miRNA biogenesis. Thus, hijacking of the miRNA biogenesis pathway appears to be one mechanism by which NS2 impairs antigen presentation. Furthermore, we found that NS2 directly interacts with interferon regulatory factor 3, which also inhibits the antigen-presenting ability of DCs. These results thus indicate that NS2-mediated impairment of antigen presentation by DCs might be a mechanism that contributes to the prevalence of the influenza virus. CI - Copyright (c) 2022 Elsevier B.V. All rights reserved. FAU - Lin, Jian AU - Lin J AD - College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China; College of Life Sciences, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. Electronic address: linjian@njau.edu.cn. FAU - Cao, Yanan AU - Cao Y AD - College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. FAU - Shah, Abid Ullah AU - Shah AU AD - College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. FAU - Zuo, Jinjiao AU - Zuo J AD - College of Life Sciences, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. FAU - Zhang, Shuai AU - Zhang S AD - College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. FAU - Yu, Qinghua AU - Yu Q AD - College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. FAU - Chong, Mark M W AU - Chong MMW AD - St Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; Department of Medicine (St Vincent's), University of Melbourne, Fitzroy, Victoria, Australia. FAU - Yang, Qian AU - Yang Q AD - College of Veterinary medicine, Nanjing Agricultural University, Wei gang 1, Nanjing, Jiangsu 210095, PR China. Electronic address: zxbyq@njau.edu.cn. LA - eng PT - Journal Article DEP - 20220304 PL - Netherlands TA - Vet Microbiol JT - Veterinary microbiology JID - 7705469 RN - 0 (MicroRNAs) SB - IM MH - Animals MH - Antigen Presentation MH - Dendritic Cells MH - Humans MH - *Influenza A Virus, H9N2 Subtype/genetics MH - *Influenza, Human MH - Mammals MH - *MicroRNAs/genetics/metabolism OTO - NOTNLM OT - Antigen presentation OT - Dendritic cells OT - Influenza A virus OT - MicroRNA OT - Non-structural protein OT - Xpo5 EDAT- 2022/03/09 06:00 MHDA- 2022/04/07 06:00 CRDT- 2022/03/08 20:11 PHST- 2021/12/20 00:00 [received] PHST- 2022/02/23 00:00 [revised] PHST- 2022/02/27 00:00 [accepted] PHST- 2022/03/09 06:00 [pubmed] PHST- 2022/04/07 06:00 [medline] PHST- 2022/03/08 20:11 [entrez] AID - S0378-1135(22)00062-1 [pii] AID - 10.1016/j.vetmic.2022.109392 [doi] PST - ppublish SO - Vet Microbiol. 2022 Apr;267:109392. doi: 10.1016/j.vetmic.2022.109392. Epub 2022 Mar 4.