Scientific article
English

Cross-presenting CD103+ dendritic cells are protected from influenza virus infection

Published inThe Journal of clinical investigation, vol. 122, no. 11, p. 4037-4047
Publication date2012
Abstract

CD8+ cytotoxic T cells are critical for viral clearance from the lungs upon influenza virus infection. The contribution of antigen cross-presentation by DCs to the induction of anti-viral cytotoxic T cells remains controversial. Here, we used a recombinant influenza virus expressing a nonstructural 1-GFP (NS1-GFP) reporter gene to visualize the route of antigen presentation by lung DCs upon viral infection in mice. We found that lung CD103+ DCs were the only subset of cells that carried intact GFP protein to the draining LNs. Strikingly, lung migratory CD103+ DCs were not productively infected by influenza virus and thus were able to induce virus-specific CD8+ T cells through the cross-presentation of antigens from virally infected cells. We also observed that CD103+ DC resistance to infection correlates with an increased anti-viral state in these cells that is dependent on the expression of type I IFN receptor. These results show that efficient cross-priming by migratory lung DCs is coupled to the acquisition of an anti-viral status, which is dependent on the type I IFN signaling pathway.

Keywords
  • Animals
  • Antigen Presentation
  • Antigens, CD
  • Antigens, Viral/genetics/immunology
  • CD8-Positive T-Lymphocytes/immunology/pathology
  • Cell Line
  • Dendritic Cells/immunology/pathology
  • Dogs
  • Green Fluorescent Proteins/genetics/immunology
  • Influenza A virus/genetics/immunology
  • Integrin alpha Chains
  • Interferon Type I/genetics/immunology
  • Lung/immunology/pathology/virology
  • Mice
  • Orthomyxoviridae Infections/genetics/immunology/prevention & control
  • Receptor, Interferon alpha-beta/genetics/immunology
  • Recombinant Fusion Proteins/genetics/immunology
  • Signal Transduction/genetics/immunology
  • Viral Nonstructural Proteins/genetics/immunology
Affiliation entities Not a UNIGE publication
Citation (ISO format)
HELFT, Julie et al. Cross-presenting CD103+ dendritic cells are protected from influenza virus infection. In: The Journal of clinical investigation, 2012, vol. 122, n° 11, p. 4037–4047. doi: 10.1172/JCI60659
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Article (Published version)
accessLevelRestricted
Identifiers
Journal ISSN0021-9738
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