Cited by 296interferon and immune responsesImmune Response and InflammationImmunotherapy and Immune Responses

IRF-3, IRF-5, and IRF-7 coordinately regulate the type I IFN response in myeloid dendritic cells downstream of MAVS signaling

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Lazear, Helen M., Lancaster, Alissa, Wilkins, Courtney, Suthar, Mehul S., Huang, Albert, Vick, Sarah C., Clepper, Lisa, Thackray, Larissa +7 more·2013·PLoS Pathogens

Abstract

Although the transcription factors IRF-3 and IRF-7 are considered master regulators of type I interferon (IFN) induction and IFN stimulated gene (ISG) expression, Irf3(-/-)×Irf7(-/-) double knockout (DKO) myeloid dendritic cells (mDC) produce relatively normal levels of IFN-β after viral infection. We generated Irf3(-/-)×Irf5(-/-)×Irf7(-/-) triple knockout (TKO) mice to test whether IRF-5 was the source of the residual induction of IFN-β and ISGs in mDCs. In pathogenesis studies with two unrelated positive-sense RNA viruses (West Nile virus (WNV) and murine norovirus), TKO mice succumbed at rates greater than DKO mice and equal to or approaching those of mice lacking the type I IFN receptor (Ifnar(-/-)). In ex vivo studies, after WNV infection or exposure to Toll-like receptor agonists, TKO mDCs failed to produce IFN-β or express ISGs. In contrast, this response was sustained in TKO macrophages following WNV infection. To define IRF-regulated gene signatures, we performed microarray analysis on WNV-infected mDC from wild type (WT), DKO, TKO, or Ifnar(-/-) mice, as well as from mice lacking the RIG-I like receptor adaptor protein MAVS. Whereas the gene induction pattern in DKO mDC was similar to WT cells, remarkably, almost no ISG induction was detected in TKO or Mavs(-/-) mDC. The relative equivalence of TKO and Mavs(-/-) responses suggested that MAVS dominantly regulates ISG induction in mDC. Moreover, we showed that MAVS-dependent induction of ISGs can occur through an IRF-5-dependent yet IRF-3 and IRF-7-independent pathway. Our results establish IRF-3, -5, and -7 as the key transcription factors responsible for mediating the type I IFN and ISG response in mDC during WNV infection and suggest a novel signaling link between MAVS and IRF-5.

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Authors
Lazear, H. M., Lancaster, A., Wilkins, C., Suthar, M. S., Huang, A., Vick, S. C., Clepper, L., Thackray, L., Brassil, M. M., Virgin, H. W., Nikolich-Zugich, J., Moses, A. V., Gale, M., Früh, K., & Diamond, M. S.
Affiliations
  • Washington University in St. Louis (US)
  • Oregon Health & Science University (US)
  • University of Washington (US)
  • Emory University (US)
  • Vaccine and Gene Therapy Institute (US)
Corresponding author
Diamond, Michael S.
Venue
PLoS Pathogens
Published
2013-01-03
Volume
9
Issue
1
Pages
e1003118
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W2036679352
Cited by
296
References
85
Citations by year
2026: 7 · 2025: 11 · 2024: 12 · 2023: 11 · 2022: 21 · 2021: 25 · 2020: 27 · 2019: 22 · 2018: 30 · 2017: 25 · 2016: 28 · 2015: 20 · 2014: 33 · 2013: 23
FWCI
19.19
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • UNC Libraries
Funders
  • National Institutes of Health (n01ai50027-8-0-1, AI083019, AI057160)
  • National Institute of Allergy and Infectious Diseases (N01 AI50027, U19AI083019, U54AI081680, N01 AI050027, R01AI074973, U54AI057160)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
IRF3, IRF5, IRF7, type I interferon, myeloid dendritic cells, MAVS, interferon-stimulated genes, West Nile virus, murine norovirus, positive-strand RNA viruses, interferon-beta, Toll-like receptor signaling, RIG-I-like receptor signaling, transcription factors, macrophages, viral pathogenesis
MeSH terms
Animals, Dendritic Cells, Macrophages, Mice, Inbred C57BL, West Nile Fever, West Nile virus, Signal Transduction, Interferon-beta, Mice, Knockout, Viral Load, Myeloid Cells, Adaptor Proteins, Signal Transducing, Interferon Regulatory Factors, Interferon Regulatory Factor-3, Interferon Regulatory Factor-7, Toll-Like Receptors, Mice, Receptor, Interferon alpha-beta

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