Alpha-methylacyl-CoA racemase deletion has mutually counteracting effects on T-cell responses, associated with unchanged course of EAE.
Eur J Immunol
; 46(3): 570-81, 2016 Mar.
Article
em En
| MEDLINE
| ID: mdl-26648339
ABSTRACT
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system. Altering the metabolism of immune cells is an attractive strategy to modify their activity during autoimmunity in MS. We investigated the effect of modulating fatty acid metabolism in an animal model of MS, EAE. Alpha-methylacyl-CoA racemase (AMACR) converts R-configuration branched fatty acids into the S-configuration, thereby preparing them for ß-oxidation. We observed a significant, disease-dependent elevation of AMACR expression in monocytes and T cells from blood, draining lymph nodes and spleen of EAE mice during the preclinical phase. In vitro analysis revealed that the proliferation of T cells was inhibited in AMACR KO mice, but T-cell polarization was switched toward a pathogenic state involving the production of more IFN-γ and IL-17, but less IL-4. These opposing effects appeared to cancel out each other in vivo, because AMACR KO EAE mice showed a marginal increase in the severity of early clinical symptoms. AMACR was not regulated in the white blood cells of MS patients. Our data show that AMACR is regulated in immune cells during EAE, but it is not a suitable target for the treatment of MS due to its opposing effects.
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Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Linfócitos T
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Racemases e Epimerases
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Encefalomielite Autoimune Experimental
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Ácidos Graxos
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Esclerose Múltipla
Tipo de estudo:
Prognostic_studies
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Risk_factors_studies
Limite:
Animals
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Female
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Humans
Idioma:
En
Revista:
Eur J Immunol
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Alemanha