Immune responses of mature chicken bone-marrow-derived dendritic cells infected with Newcastle disease virus strains with differing pathogenicity

Arch Virol. 2018 Jun;163(6):1407-1417. doi: 10.1007/s00705-018-3745-6. Epub 2018 Feb 3.

Abstract

Infection of chickens with virulent Newcastle disease virus (NDV) is associated with severe pathology and increased morbidity and mortality. The innate immune response contributes to the pathogenicity of NDV. As professional antigen-presenting cells, dendritic cells (DCs) play a unique role in innate immunity. However, the contribution of DCs to NDV infection has not been investigated in chickens. In this study, we selected two representative NDV strains, i.e., the velogenic NDV strain Chicken/Guangdong/GM/2014 (GM) and the lentogenic NDV strain La Sota, to investigate whether NDVs could infect LPS-activated chicken bone-derived marrow DCs (mature chicken BM-DCs). We compared the viral titres and innate immune responses in mature chicken BM-DCs following infection with those strains. Both NDV strains could infect mature chicken BM-DC, but the GM strain showed stronger replication capacity than the La Sota strain in mature chicken BM-DCs. Gene expression profiling showed that MDA5, LGP2, TLR3, TLR7, IFN-α, IFN-β, IFN-γ, IL-1β, IL-6, IL-18, IL-8, CCL5, IL-10, IL-12, MHC-I, and MHC-II levels were altered in mature DCs after infection with NDVs at all evaluated times postinfection. Notably, the GM strain triggered stronger innate immune responses than the La Sota strain in chicken BM-DCs. However, both strains were able to suppress the expression of some cytokines, such as IL-6 and IFN-α, in mature chicken DCs at 24 hpi. These data provide a foundation for further investigation of the role of chicken DCs in NDV infection.

MeSH terms

  • Animals
  • Avian Proteins / genetics
  • Avian Proteins / immunology*
  • Bone Marrow Cells / drug effects
  • Bone Marrow Cells / immunology
  • Bone Marrow Cells / virology
  • Chickens
  • Dendritic Cells / drug effects
  • Dendritic Cells / immunology
  • Dendritic Cells / virology
  • Gene Expression Profiling
  • Gene Expression Regulation*
  • Histocompatibility Antigens Class I / genetics
  • Histocompatibility Antigens Class I / immunology
  • Histocompatibility Antigens Class II / genetics
  • Histocompatibility Antigens Class II / immunology
  • Host-Pathogen Interactions / genetics
  • Host-Pathogen Interactions / immunology*
  • Immunity, Innate*
  • Interferon-Induced Helicase, IFIH1 / genetics
  • Interferon-Induced Helicase, IFIH1 / immunology
  • Interferons / genetics
  • Interferons / immunology
  • Interleukins / genetics
  • Interleukins / immunology
  • Lipopolysaccharides / pharmacology
  • Newcastle Disease / genetics
  • Newcastle Disease / immunology*
  • Newcastle Disease / pathology
  • Newcastle Disease / virology
  • Newcastle disease virus / immunology
  • Newcastle disease virus / pathogenicity*
  • Poultry Diseases / genetics
  • Poultry Diseases / immunology*
  • Poultry Diseases / pathology
  • Poultry Diseases / virology
  • RNA Helicases / genetics
  • RNA Helicases / immunology
  • Signal Transduction
  • Toll-Like Receptor 3 / genetics
  • Toll-Like Receptor 3 / immunology
  • Virulence
  • Virus Replication

Substances

  • Avian Proteins
  • Histocompatibility Antigens Class I
  • Histocompatibility Antigens Class II
  • Interleukins
  • Lipopolysaccharides
  • Toll-Like Receptor 3
  • Interferons
  • Interferon-Induced Helicase, IFIH1
  • RNA Helicases