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Front Immunol. 2016 Dec 05;7:564. doi: 10.3389/fimmu.2016.00564. eCollection 2016.

Type I Interferon Impairs Specific Antibody Responses Early during Establishment of LCMV Infection.

Frontiers in immunology

Matthieu Daugan, Armstrong Murira, Barbara C Mindt, Amélie Germain, Esther Tarrab, Pascal Lapierre, Jörg H Fritz, Alain Lamarre

Affiliations

  1. Immunovirology Laboratory, Institut national de la recherche scientifique (INRS), INRS-Institut Armand-Frappier , Laval, QC , Canada.
  2. Complex Traits Group, Department of Microbiology and Immunology, McGill University , Montréal, QC , Canada.
  3. Complex Traits Group, Department of Microbiology and Immunology, McGill University, Montréal, QC, Canada; Complex Traits Group, Department of Physiology, McGill University, Montréal, QC, Canada.

PMID: 27994594 PMCID: PMC5136549 DOI: 10.3389/fimmu.2016.00564

Abstract

Elicitation of type I interferon (IFN-I) has been shown to both enhance and impair cell-mediated immune responses in acute and persistent viral infections, respectively. Here, we show that, in addition to its effect on T cells, IFN-I drives impairment of specific antibody responses through interaction with B cells in the acute phase of lymphocytic choriomeningitis virus (LCMV) infection. This impairment was limited to the T cell-dependent B cell response and was associated with disruption of B cell follicles, development of hypergammaglobulinemia (HGG), and expansion of the T follicular helper cell population. Antigen-specific antibody responses were restored by ablation of IFN-I signaling through antibody-mediated IFN-I receptor blockade and B cell-specific IFN-I receptor knockout. Importantly, IFN-I receptor deficiency in B cells also accelerated the development of LCMV neutralizing antibodies and alleviated HGG. These results provide a potential therapeutic target toward efficient treatment measures that limit immunopathology in persistent viral infections.

Keywords: LCMV; antibody formation; immunopathology; interferon type I; neutralizing antibodies

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