title: Antibody-dependent enhancement of coxsackievirus B3 infection of primary CD19+ B lymphocytes.
abstract: Coxsackievirus B3 (CVB3) is associated with several different acute and chronic forms of human disease, including myocarditis, aseptic meningitis, and pancreatitis. Moreover, CVB3 also infects immune cells like CD19+ B lymphocytes, but the viral uptake mechanism into these cells is not well understood. Therefore, primary murine and human CD19+ B cells were isolated by magnetic-activated cell separation technology and analyzed for virus receptor expression, antibody-dependent enhancement of viral infection, and different cellular surface proteins, that might be involved in mechanisms of viral uptake. Western blot analysis of these cells revealed no significant expression of the coxsackievirus-adenovirus receptor CAR. But incubation of CVB3 with serum dilutions, which exhibited binding but not neutralizing characteristics, increased viral uptake and replication significantly in a dose-dependent manner. Viral entry was reduced when Fc portions of immunoglobulins were blocked by protein A treatment. Moreover, the classical complement system rather than Fc-gamma-receptor-mediated mechanisms could be involved in viral uptake. Taken together, these data suggest an antibody-dependent enhancement of CVB3 infection of primary murine and human CD19+ B cells.
authors: Department of Virology and Antiviral Therapy, University Hospital, Friedrich Schiller University Jena, Jena, Germany.
authors: Nadine
authors: N
authors: Jarasch-Althof
authors: Nadine
authors: N
authors: Wiesener
authors: Michaela
authors: M
authors: Schmidtke
authors: Peter
authors: P
authors: Wutzler
authors: Andreas
authors: A
authors: Henke
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000494:pharmacology; D019067:Antibody-Dependent Enhancement; D018941:Antigens, CD19 / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology* / Q000821:virology; D002478:Cells, Cultured; D062727:Coxsackie and Adenovirus Receptor-Like Membrane Protein; D003384:Coxsackievirus Infections / Q000276:immunology / Q000821:virology*; D004306:Dose-Response Relationship, Immunologic; D029822:Enterovirus B, Human / Q000472:pathogenicity / Q000502:physiology*; D054884:Host-Pathogen Interactions / Q000276:immunology; D006801:Humans; D007106:Immune Sera / Q000276:immunology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D011991:Receptors, Virus / Q000378:metabolism; D053586:Virus Internalization / Q000187:drug effects; D018406:Virus Physiological Phenomena
chemical_list: D000914:Antibodies, Viral; D018941:Antigens, CD19; C568771:CLMP protein, human; C568772:CLMP protein, mouse; D062727:Coxsackie and Adenovirus Receptor-Like Membrane Protein; D007106:Immune Sera; D011991:Receptors, Virus