title: Interleukin-1 inhibits hepatitis C virus subgenomic RNA replication by activation of extracellular regulated kinase pathway.
abstract: Interleukin-1 (IL-1) plays an important role in the inflammatory process. Some studies have demonstrated that IL-1 production was impaired in patients with chronic infections of hepatitis C virus (HCV), implying that IL-1 may play a role in viral clearance. Using an HCV subgenomic replicon cell line, we demonstrate that IL-1 can effectively inhibit HCV subgenomic RNA replication and viral protein expression, suggesting that IL-1 has direct antiviral activity. The inhibitory effect is associated with the extracellular regulatory kinase (ERK) activation. In addition, we also show that IL-1 can induce one of the interferon-stimulated genes (ISGs), 1-8U, which exhibits antiviral activity. However, it has no effect on the other ISG, 6-16, suggesting that IL-1 induces novel antiviral pathways within a cell.
authors.affiliation: Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville 32610-0275, USA.
authors.forename: Haizhen
authors.initials: H
authors.lastname: Zhu
authors.forename: Chen
authors.initials: C
authors.lastname: Liu
mesh_terms: D004789:Enzyme Activation; D005786:Gene Expression Regulation; D016174:Hepacivirus / Q000187:drug effects* / Q000502:physiology; D006801:Humans; D007375:Interleukin-1 / Q000494:pharmacology*; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism*; D012367:RNA, Viral / Q000096:biosynthesis* / Q000187:drug effects / Q000235:genetics; D012093:Replicon; D014407:Tumor Cells, Cultured; D014779:Virus Replication / Q000187:drug effects*
chemical_list: D007375:Interleukin-1; D012367:RNA, Viral; D020928:Mitogen-Activated Protein Kinases