title: Differential susceptibility and response of primary human myeloid BDCA1(+) dendritic cells to infection with different Enteroviruses.
abstract: Coxsackie B viruses (CVBs) and echoviruses (EVs) form the Human Enterovirus-B (HEV-B) species within the family Picornaviridae. HEV-B infections are widespread and generally cause mild disease; however, severe infections occur and HEV-B are associated with various chronic diseases such as cardiomyopathy and type 1 diabetes. Dendritic cells (DCs) are the professional antigen-presenting cells of our immune system and initiate and control immune responses to invading pathogens, yet also maintain tolerance to self-antigens. We previously reported that EVs, but not CVBs, can productively infect in vitro generated monocyte-derived DCs. The interactions between HEV-B and human myeloid DCs (mDCs) freshly isolated from blood, however, remain unknown. Here, we studied the susceptibility and responses of BDCA1(+) mDC to HEV-B species and found that these mDC are susceptible to EV, but not CVB infection. Productive EV7 infection resulted in massive, rapid cell death without DC activation. Contrary, EV1 infection, which resulted in lower virus input at the same MOI, resulted in DC activation as observed by production of type I interferon-stimulated genes (ISGs), upregulation of co-stimulatory and co-inhibitory molecules (CD80, CD86, PDL1) and production of IL-6 and TNF-α, with a relative moderate decrease in cell viability. EV1-induced ISG expression depended on virus replication. CVB infection did not affect DC viability and resulted in poor induction of ISGs and CD80 induction in part of the donors. These data show for the first time the interaction between HEV-B species and BDCA1(+) mDCs isolated freshly from blood. Our data indicate that different HEV-B species can influence DC homeostasis in various ways, possibly contributing to HEV-B associated pathology.
authors: Department of Tumor Immunology, Nijmegen Centre for Molecular Life Sciences & Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
authors: Barbara M
authors: BM
authors: Schulte
authors: Esther D
authors: ED
authors: Kers-Rebel
authors: Amy C
authors: AC
authors: Prosser
authors: Jochem M D
authors: JM
authors: Galama
authors: Frank J M
authors: FJ
authors: van Kuppeveld
authors: Gosse J
authors: GJ
authors: Adema
mesh_terms: D018949:Antigens, CD1; D000954:Antigens, Surface / Q000378:metabolism*; D016923:Cell Death; D002454:Cell Differentiation / Q000276:immunology; D003588:Cytopathogenic Effect, Viral; D003713:Dendritic Cells / Q000166:cytology / Q000276:immunology / Q000378:metabolism* / Q000821:virology*; D004770:Enterovirus / Q000276:immunology / Q000502:physiology*; D006023:Glycoproteins; D006801:Humans; D016898:Interferon-alpha / Q000096:biosynthesis / Q000276:immunology; D016899:Interferon-beta / Q000096:biosynthesis / Q000276:immunology; D022423:Myeloid Cells / Q000276:immunology / Q000378:metabolism* / Q000821:virology*; D051193:Toll-Like Receptors / Q000378:metabolism; D014779:Virus Replication
chemical_list: D018949:Antigens, CD1; D000954:Antigens, Surface; C437944:CD1C protein, human; D006023:Glycoproteins; D016898:Interferon-alpha; D051193:Toll-Like Receptors; D016899:Interferon-beta
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