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Full-Text Articles in Immunology of Infectious Disease

Human Type 2 Myeloid Dendritic Cells Produce Interferon-Lambda And Amplify Interferon-Alpha In Response To Hepatitis C Virus Infection, Shuye Zhang, Karen Kodys, Kui Li, Gyongyi Szabo Sep 2014

Human Type 2 Myeloid Dendritic Cells Produce Interferon-Lambda And Amplify Interferon-Alpha In Response To Hepatitis C Virus Infection, Shuye Zhang, Karen Kodys, Kui Li, Gyongyi Szabo

Gyongyi Szabo

BACKGROUND and AIMS: The type III interferons (IFN-lambdas: interleukin [IL]-28a, IL-28b, and IL-29) have important roles in hepatitis C virus (HCV) infection, but little is understood about what cells produce these cytokines or how production is activated. We investigated whether human immune cells recognize HCV-infected cells and respond by producing IFN-lambda. METHODS: We cultured healthy human peripheral blood mononuclear cells (PBMCs) with different populations of immune cells and Japanese fulminant hepatitis-1 (JFH-1) HCV-infected Huh7.5 (cell culture-derived HCV particles [HCVcc]/Huh7.5) cells. RESULTS: Human PBMCs recognized HCVcc/Huh7.5 cells and responded by producing IFN-alpha, IFN-gamma, and IFN-lambda. A rare subset of myeloid dendritic …


Persistence Of Episomal Hiv-1 Infection Intermediates In Patients On Highly Active Anti-Retroviral Therapy, Mark Sharkey, Ian Teo, Thomas Greenough, Natalia Sharova, Katherine Luzuriaga, John Sullivan, R. Bucy, Leondios Kostrikis, Ashley Haase, Claire Veryard, Raul Davaro, Sarah Cheeseman, Jennifer Daly, Carol Bova, Richard Ellison, Brian Mady, Kwan Lai, Graeme Moyle, Mark Nelson, Brian Gazzard, Sunil Shaunak, Mario Stevenson Dec 2012

Persistence Of Episomal Hiv-1 Infection Intermediates In Patients On Highly Active Anti-Retroviral Therapy, Mark Sharkey, Ian Teo, Thomas Greenough, Natalia Sharova, Katherine Luzuriaga, John Sullivan, R. Bucy, Leondios Kostrikis, Ashley Haase, Claire Veryard, Raul Davaro, Sarah Cheeseman, Jennifer Daly, Carol Bova, Richard Ellison, Brian Mady, Kwan Lai, Graeme Moyle, Mark Nelson, Brian Gazzard, Sunil Shaunak, Mario Stevenson

Associate Professor Mark Nelson

Treatment of HIV-1-infected individuals with a combination of anti-retroviral agents results in sustained suppression of HIV-1 replication, as evidenced by a reduction in plasma viral RNA to levels below the limit of detection of available assays. However, even in patients whose plasma viral RNA levels have been suppressed to below detectable levels for up to 30 months, replication-competent virus can routinely be recovered from patient peripheral blood mononuclear cells and from semen. A reservoir of latently infected cells established early in infection may be involved in the maintenance of viral persistence despite highly active anti-retroviral therapy. However, whether virus replication …