Autoregulatory CD8 T cells depend on cognate antigen recognition and CD4/CD8 myelin determinants

OBJECTIVE: To determine the antigenic determinants and specific molecular requirements for the generation of autoregulatory neuroantigen-specific CD8(+) T cells in models of multiple sclerosis (MS). METHODS: We have previously shown that MOG35-55-specific CD8(+) T cells suppress experimental autoimm...

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Detalles Bibliográficos
Autores principales: Ortega, Sterling B., Kashi, Venkatesh P., Cunnusamy, Khrishen, Franco, Jorge, Karandikar, Nitin J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Lippincott Williams & Wilkins 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4635551/
https://www.ncbi.nlm.nih.gov/pubmed/26587555
http://dx.doi.org/10.1212/NXI.0000000000000170
Descripción
Sumario:OBJECTIVE: To determine the antigenic determinants and specific molecular requirements for the generation of autoregulatory neuroantigen-specific CD8(+) T cells in models of multiple sclerosis (MS). METHODS: We have previously shown that MOG35-55-specific CD8(+) T cells suppress experimental autoimmune encephalomyelitis (EAE) in the C57BL/6 model. In this study, we utilized multiple models of EAE to assess the ability to generate autoregulatory CD8(+) T cells. RESULTS: We demonstrate that alternative myelin peptides (PLP178-191) and other susceptible mouse strains (SJL) generated myelin-specific CD8(+) T cells, which were fully capable of suppressing disease. The disease-ameliorating function of these cells was dependent on the specific cognate myelin antigen. Generation of these autoregulatory CD8(+) T cells was not affected by thymic selection, but was dependent on the presence of both CD4(+) and CD8(+) T-cell epitopes in the immunizing encephalitogenic antigen. CONCLUSIONS: These studies show that the generation of autoregulatory CD8(+) T cells is a more generalized, antigen-specific phenomenon across multiple neuroantigens and mouse strains, with significant implications in understanding disease regulation.