alexa Lipid microarrays identify key mediators of autoimmune brain inflammation.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Kanter JL, Narayana S, Ho PP, Catz I, Warren KG,

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Abstract Recent studies suggest that increased T-cell and autoantibody reactivity to lipids may be present in the autoimmune demyelinating disease multiple sclerosis. To perform large-scale multiplex analysis of antibody responses to lipids in multiple sclerosis, we developed microarrays composed of lipids present in the myelin sheath, including ganglioside, sulfatide, cerebroside, sphingomyelin and total brain lipid fractions. Lipid-array analysis showed lipid-specific antibodies against sulfatide, sphingomyelin and oxidized lipids in cerebrospinal fluid (CSF) derived from individuals with multiple sclerosis. Sulfatide-specific antibodies were also detected in SJL/J mice with acute experimental autoimmune encephalomyelitis (EAE). Immunization of mice with sulfatide plus myelin peptide resulted in a more severe disease course of EAE, and administration of sulfatide-specific antibody exacerbated EAE. Thus, autoimmune responses to sulfatide and other lipids are present in individuals with multiple sclerosis and in EAE, and may contribute to the pathogenesis of autoimmune demyelination. This article was published in Nat Med and referenced in Journal of Clinical & Cellular Immunology

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