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Updated: Aug 5, 2026

Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
Published on: March 2, 2014
Mechanism of measles virus-induced suppression of inflammatory immune responses
J C Marie1, J Kehren, M C Trescol-Biémont
1INSERM U503, CERVI, Immunobiologie Fondamentale et Clinique, 69365, Lyon, France.
Abstract:
Measles virus (MV) causes profound immunosuppression, resulting in high infant mortality. The mechanisms are poorly understood, largely due to the lack of a suitable animal model. Here, we report that particular MV proteins, in the absence of MV replication, could generate a systemic immunosuppression in mice through two pathways: (1) via MV-nucleoprotein and its receptor FcgammaR on dendritic cells; and (2) via virus envelope glycoproteins and the MV-hemagglutinin cellular receptor, CD46. The effects comprise reduced hypersensitivity responses associated with impaired function of dendritic cells, decreased production of IL-12, and the loss of antigen-specific T cell proliferation. These results introduce a novel model for testing the immunosuppressive potential of anti-measles vaccines and reveal a specific mechanism of MV-induced modulation of inflammatory reactions.
Insights
Measles virus (MV) proteins alone can suppress the immune system in mice, offering a new model to study measles and test vaccines. This research identifies specific viral proteins and cellular pathways involved in immune suppression.
Area of Science:
- Virology
- Immunology
- Pathogen-host interactions
Background:
- Measles virus (MV) causes severe immunosuppression, leading to high infant mortality, but the underlying mechanisms remain unclear.
- A lack of suitable animal models has hindered research into MV-induced immune dysfunction.
Purpose of the Study:
- To investigate the mechanisms by which measles virus proteins induce systemic immunosuppression.
- To establish a novel animal model for studying MV-induced immune modulation and evaluating anti-measles vaccines.
Main Methods:
- Utilized a mouse model to study the effects of specific MV proteins without viral replication.
- Investigated two distinct pathways involving MV nucleoprotein/FcgammaR and MV glycoproteins/CD46.
- Assessed immune responses including hypersensitivity, dendritic cell function, IL-12 production, and T cell proliferation.
Main Results:
- Specific MV proteins, independent of replication, induced systemic immunosuppression in mice.
- Identified two pathways: MV nucleoprotein-FcgammaR on dendritic cells and MV glycoproteins-CD46.
- Observed impaired dendritic cell function, reduced IL-12 production, and diminished antigen-specific T cell proliferation.
Conclusions:
- Introduced a novel mouse model for evaluating the immunosuppressive potential of anti-measles vaccines.
- Revealed specific mechanisms of MV-induced immune modulation, highlighting the roles of nucleoprotein and glycoproteins.
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