Activation of the interferon-β promoter during hepatitis C virus RNA replication

Brenda Fredericksen, Giridhar R. Akkaraju, Eileen Foy, Chunfu Wang, Jill Pflugheber, Zhijian J. Chen, Michael Gale

Research output: Contribution to journalArticle

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Abstract

In this study we examined the impact of hepatitis C virus (HCV) RNA replication on the innate antiviral response of the host cell. Replication of an HCV subgenomic replicon stimulated the activation of the interferon (IFN)-β promoter and the production of IFN in human hepatoma cells. Using a variety of functional assays, we found that HCV RNA replication induced the activation and DNA-binding activity of NFκB and interferon regulatory factor (IRF)-1. In addition, microscopy experiments revealed a higher frequency of cells containing the nuclear-localized, active form of IRF-3 in HCV replicon cultures versus control cultures. Consistent with these observations, cells harboring the HCV replicon exhibited high basal level expression of a subset of IFN-stimulated antiviral genes. Our results indicate that HCV RNA replication can stimulate cellular antiviral programs that contribute to the assembly and activation of the IFN-β enhanceosome complex and initiation of the antiviral state. Stable HCV RNA replication in the face of the host antiviral response suggests that HCV may encode one or more proteins capable of overcoming specific antiviral processes, thereby supporting persistent infection.

Original languageEnglish (US)
Pages (from-to)29-40
Number of pages12
JournalViral Immunology
Volume15
Issue number1
StatePublished - 2002

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Virus Replication
Hepacivirus
Interferons
RNA
Antiviral Agents
Replicon
Interferon Regulatory Factor-3
Interferon Regulatory Factor-1
Microscopy
Hepatocellular Carcinoma
DNA
Infection
Genes

ASJC Scopus subject areas

  • Immunology
  • Virology

Cite this

Fredericksen, B., Akkaraju, G. R., Foy, E., Wang, C., Pflugheber, J., Chen, Z. J., & Gale, M. (2002). Activation of the interferon-β promoter during hepatitis C virus RNA replication. Viral Immunology, 15(1), 29-40.

Activation of the interferon-β promoter during hepatitis C virus RNA replication. / Fredericksen, Brenda; Akkaraju, Giridhar R.; Foy, Eileen; Wang, Chunfu; Pflugheber, Jill; Chen, Zhijian J.; Gale, Michael.

In: Viral Immunology, Vol. 15, No. 1, 2002, p. 29-40.

Research output: Contribution to journalArticle

Fredericksen, B, Akkaraju, GR, Foy, E, Wang, C, Pflugheber, J, Chen, ZJ & Gale, M 2002, 'Activation of the interferon-β promoter during hepatitis C virus RNA replication', Viral Immunology, vol. 15, no. 1, pp. 29-40.
Fredericksen B, Akkaraju GR, Foy E, Wang C, Pflugheber J, Chen ZJ et al. Activation of the interferon-β promoter during hepatitis C virus RNA replication. Viral Immunology. 2002;15(1):29-40.
Fredericksen, Brenda ; Akkaraju, Giridhar R. ; Foy, Eileen ; Wang, Chunfu ; Pflugheber, Jill ; Chen, Zhijian J. ; Gale, Michael. / Activation of the interferon-β promoter during hepatitis C virus RNA replication. In: Viral Immunology. 2002 ; Vol. 15, No. 1. pp. 29-40.
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