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ResearchIn-Press PreviewAutoimmunityImmunology Free access | 10.1172/JCI125857

C-type lectin receptors Mcl and Mincle control development of multiple sclerosis-like neuroinflammation

Marie N'diaye, Susanna Brauner, Sevasti Flytzani, Lara Kular, Andreas Warnecke, Milena Z. Adzemovic, Eliane Piket, Jin-Hong Min, Will Edwards, Filia Mela, Hoi Ying Choi, Vera Magg, Tojo James, Magdalena Linden, Holger M. Reichardt, Michael R. Daws, Jack van Horssen, Ingrid Kockum, Robert A. Harris, Tomas Olsson, Andre O. Guerreiro-Cacais, and Maja Jagodic

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First published November 14, 2019 - More info

J Clin Invest. https://doi.org/10.1172/JCI125857.
Copyright © 2019, American Society for Clinical Investigation
First published November 14, 2019 - Version history
Abstract

Pattern recognition receptors (PRRs) are crucial for responses to infections and tissue damage, however, their role in autoimmunity is less clear. Herein we demonstrate that two C-type lectin receptors (CLRs), Mcl and Mincle, play an important role in the pathogenesis of experimental autoimmune encephalomyelitis (EAE), an animal model of Multiple Sclerosis (MS). Congenic rats expressing lower levels of Mcl and Mincle on myeloid cells exhibited a drastic reduction in EAE incidence. In vivo silencing of Mcl and Mincle or blockade of their endogenous ligand SAP130 revealed that receptors expression in the central nervous system is crucial for the T cell recruitment and reactivation into a pathogenic Th17/GM-CSF phenotype. Consistent with this, we uncovered MCL/MINCLE-expressing cells in brain lesions of MS patients and we further found an upregulation of the MCL/MINCLE signaling pathway and an increased response following MCL/MINCLE stimulation in peripheral blood mononuclear cells from MS patients. Together these data support a role for CLRs in autoimmunity and implicate the MCL/MINCLE pathway as a potential therapeutic target in MS.

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