Regulatory lymphocytes are key factors in MHC-independent resistance to EAE.

Abstract:

BACKGROUND AND OBJECTIVES:Resistant and susceptible mouse strains to experimental autoimmune encephalomyelitis (EAE), an inducible demyelinating experimental disease serving as animal model for multiple sclerosis, have been described. We aimed to explore MHC-independent mechanisms inducing resistance to EAE. METHODS:For EAE induction, female C57BL/6 (susceptible strain) and CD1 (resistant outbred strain showing heterogeneous MHC antigens) mice were immunized with the 35-55 peptide of myelin oligodendrocyte glycoprotein (MOG35-55). We studied T cell proliferation, regulatory and effector cell subpopulations, intracellular and serum cytokine patterns, and titers of anti-MOG serum antibodies. RESULTS:Upon immunization with MOG35-55, T lymphocytes from susceptible mice but not that of resistant strain were capable of proliferating when stimulated with MOG35-55. Accordingly, resistant mice experienced a rise in regulatory B cells (P=0.001) and, to a lower extent, in regulatory T cells (P=0.02) compared with C57BL/6 susceptible mice. As a consequence, MOG35-55-immunized C57BL/6 mice showed higher percentages of CD4+ T cells producing both IFN-gamma (P=0.02) and IL-17 (P=0.009) and higher serum levels of IL-17 (P=0.04) than resistant mice. CONCLUSIONS:Expansion of regulatory B and T cells contributes to the induction of resistance to EAE by an MHC-independent mechanism.

journal_name

J Immunol Res

authors

Marín N,Mecha M,Espejo C,Mestre L,Eixarch H,Montalban X,Álvarez-Cermeño JC,Guaza C,Villar LM

doi

10.1155/2014/156380

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

156380

eissn

2314-8861

issn

2314-7156

journal_volume

2014

pub_type

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