title: Effect of cytokines on Japanese encephalitis virus production by human monocytes.
abstract: Japanese encephalitis (JE) virus was shown to grow in in vitro cultures of human monocytes. Interferon (IFN)-alpha and IFN-gamma inhibited JE virus production by the infected monocytes in the absence of anti-JE virus antibody, but interleukin (IL)-1 alpha, IL-2, IL-3, granulocyte-macrophage colony-stimulating factor (GM-CSF), granulocyte-CSF (G-CSF), and tumor necrosis factor (TNF)-alpha did not show a significant inhibition. Antibody against JE virus increased the JE virus production by the infected monocytes probably by enhanced uptake of virus-antibody complexes via Fc receptors. IFN-gamma and GM-CSF increased JE virus production by monocytes in the presence of anti-JE virus antibody, whereas IFN-alpha inhibited JE virus production even in the presence of the antibody. The other 5 cytokines (IL-1 alpha, IL-2, IL-3, G-CSF, and TNF-alpha) did not show a significant effect on JE virus production by monocytes in the presence or absence of the antibody.
authors.affiliation: First Department of Internal Medicine, School of Medicine, Ehime University.
authors.forename: H
authors.initials: H
authors.lastname: Hasegawa
authors.forename: Y
authors.initials: Y
authors.lastname: Satake
authors.forename: Y
authors.initials: Y
authors.lastname: Kobayashi
mesh_terms: D000914:Antibodies, Viral / Q000276:immunology; D001685:Biological Factors / Q000494:pharmacology*; D002478:Cells, Cultured; D003115:Colony-Stimulating Factors / Q000494:pharmacology; D016207:Cytokines; D004664:Encephalitis Virus, Japanese / Q000187:drug effects* / Q000276:immunology; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D006133:Growth Substances / Q000494:pharmacology; D006801:Humans; D007370:Interferon Type I / Q000494:pharmacology; D007371:Interferon-gamma / Q000494:pharmacology; D007376:Interleukin-2 / Q000494:pharmacology; D007377:Interleukin-3 / Q000494:pharmacology; D009000:Monocytes / Q000276:immunology / Q000382:microbiology*; D011961:Receptors, Fc / Q000276:immunology; D011994:Recombinant Proteins / Q000494:pharmacology; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology; D014779:Virus Replication / Q000187:drug effects
chemical_list: D000914:Antibodies, Viral; D001685:Biological Factors; D003115:Colony-Stimulating Factors; D016207:Cytokines; D006133:Growth Substances; D007370:Interferon Type I; D007376:Interleukin-2; D007377:Interleukin-3; D011961:Receptors, Fc; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha; D007371:Interferon-gamma; D016178:Granulocyte-Macrophage Colony-Stimulating Factor