The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy

The human interferon (IFN) response is a key innate immune mechanism to fight virus infection. IFNs are host-encoded secreted proteins, which induce IFN-stimulated genes (ISGs) with antiviral properties. Among the three classes of IFNs, type III IFNs, also called IFN lambdas (IFNLs), are an essentia...

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Main Authors: Janina Bruening, Bettina Weigel, Gisa Gerold
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Journal of Immunology Research
Online Access:http://dx.doi.org/10.1155/2017/7232361
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author Janina Bruening
Bettina Weigel
Gisa Gerold
author_facet Janina Bruening
Bettina Weigel
Gisa Gerold
author_sort Janina Bruening
collection DOAJ
description The human interferon (IFN) response is a key innate immune mechanism to fight virus infection. IFNs are host-encoded secreted proteins, which induce IFN-stimulated genes (ISGs) with antiviral properties. Among the three classes of IFNs, type III IFNs, also called IFN lambdas (IFNLs), are an essential component of the innate immune response to hepatitis C virus (HCV). In particular, human polymorphisms in IFNL gene loci correlate with hepatitis C disease progression and with treatment response. To date, the underlying mechanisms remain mostly elusive; however it seems clear that viral infection of the liver induces IFNL responses. As IFNL receptors show a more restricted tissue expression than receptors for other classes of IFNs, IFNL treatment has reduced side effects compared to the classical type I IFN treatment. In HCV therapy, however, IFNL will likely not play an important role as highly effective direct acting antivirals (DAA) exist. Here, we will review our current knowledge on IFNL gene expression, protein properties, signaling, ISG induction, and its implications on HCV infection and treatment. Finally, we will discuss the lessons learnt from the HCV and IFNL field for virus infections beyond hepatitis C.
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spelling doaj-art-59f00d48cbe74e329ff6b123aa5f59be2025-02-03T06:42:10ZengWileyJournal of Immunology Research2314-88612314-71562017-01-01201710.1155/2017/72323617232361The Role of Type III Interferons in Hepatitis C Virus Infection and TherapyJanina Bruening0Bettina Weigel1Gisa Gerold2Institute for Experimental Virology, Centre for Experimental and Clinical Infection Research (TWINCORE), Hannover, GermanyInstitute for Experimental Virology, Centre for Experimental and Clinical Infection Research (TWINCORE), Hannover, GermanyInstitute for Experimental Virology, Centre for Experimental and Clinical Infection Research (TWINCORE), Hannover, GermanyThe human interferon (IFN) response is a key innate immune mechanism to fight virus infection. IFNs are host-encoded secreted proteins, which induce IFN-stimulated genes (ISGs) with antiviral properties. Among the three classes of IFNs, type III IFNs, also called IFN lambdas (IFNLs), are an essential component of the innate immune response to hepatitis C virus (HCV). In particular, human polymorphisms in IFNL gene loci correlate with hepatitis C disease progression and with treatment response. To date, the underlying mechanisms remain mostly elusive; however it seems clear that viral infection of the liver induces IFNL responses. As IFNL receptors show a more restricted tissue expression than receptors for other classes of IFNs, IFNL treatment has reduced side effects compared to the classical type I IFN treatment. In HCV therapy, however, IFNL will likely not play an important role as highly effective direct acting antivirals (DAA) exist. Here, we will review our current knowledge on IFNL gene expression, protein properties, signaling, ISG induction, and its implications on HCV infection and treatment. Finally, we will discuss the lessons learnt from the HCV and IFNL field for virus infections beyond hepatitis C.http://dx.doi.org/10.1155/2017/7232361
spellingShingle Janina Bruening
Bettina Weigel
Gisa Gerold
The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy
Journal of Immunology Research
title The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy
title_full The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy
title_fullStr The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy
title_full_unstemmed The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy
title_short The Role of Type III Interferons in Hepatitis C Virus Infection and Therapy
title_sort role of type iii interferons in hepatitis c virus infection and therapy
url http://dx.doi.org/10.1155/2017/7232361
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