Human endogenous retrovirus protein activates innate immunity and promotes experimental allergic encephalomyelitis in mice. - Inserm - Institut national de la santé et de la recherche médicale Accéder directement au contenu
Article Dans Une Revue PLoS ONE Année : 2013

Human endogenous retrovirus protein activates innate immunity and promotes experimental allergic encephalomyelitis in mice.

Résumé

Multiple sclerosis (MS) is a complex multifactorial disease of the central nervous system (CNS) for which animal models have mainly addressed downstream immunopathology but not potential inducers of autoimmunity. In the absence of a pathogen known to cause neuroinflammation in MS, Mycobacterial lysate is commonly used in the form of complete Freund's adjuvant to induce autoimmunity to myelin proteins in Experimental Allergic Encephalomyelitis (EAE), an animal model for MS. The present study demonstrates that a protein from the human endogenous retrovirus HERV-W family (MSRV-Env) can be used instead of mycobacterial lysate to induce autoimmunity and EAE in mice injected with MOG, with typical anti-myelin response and CNS lesions normally seen in this model. MSRV-Env was shown to induce proinflammatory response in human macrophage cells through TLR4 activation pathway. The present results demonstrate a similar activation of murine dendritic cells and show the ability of MSRV-Env to trigger EAE in mice. In previous studies, MSRV-Env protein was reproducibly detected in MS brain lesions within microglia and perivascular macrophages. The present results are therefore likely to provide a model for MS, in which the upstream adjuvant triggering neuroinflammation is the one detected in MS active lesions. This model now allows pre-clinical studies with therapeutic agents targeting this endogenous retroviral protein in MS.

Domaines

Immunologie
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Dates et versions

inserm-00940175 , version 1 (31-01-2014)

Identifiants

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Hervé Perron, Hei-Lanne Dougier-Reynaud, Christina Lomparski, Iuliana Popa, Reza Firouzi, et al.. Human endogenous retrovirus protein activates innate immunity and promotes experimental allergic encephalomyelitis in mice.. PLoS ONE, 2013, 8 (12), pp.e80128. ⟨10.1371/journal.pone.0080128⟩. ⟨inserm-00940175⟩
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