Scerbo MJ, Bibolini MJ, Roth GA, Monferran CG. Synapsin peptide fused to E. coli heat-labile toxin B subunit induces regulatory T cells and modulates cytokine balance in experimental autoimmune encephalomyelitis.
J Neuroimmunol 2011;
242:16-25. [PMID:
22138356 DOI:
10.1016/j.jneuroim.2011.11.006]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 11/07/2011] [Accepted: 11/10/2011] [Indexed: 10/14/2022]
Abstract
We previously found that the preventive oral administration of a hybrid consisting of the C domain of synapsin and the B subunit of E. coli heat-labile enterotoxin (LTBSC) efficiently suppresses experimental autoimmune encephalomyelitis (EAE) development in rats. We investigated the effect of LTBSC on cytokine expression and on regulatory T (Treg) cells in rats with myelin induced EAE. LTBSC treatment increased the frequency of CD4(+)FoxP3(+) Treg cells in lymph nodes prior to challenge and in the EAE acute stage. LTBSC also up-regulated the expression of anti-inflammatory Th2/Th3 cytokines and diminished myelin basic protein-specific Th1 and Th17 cell responses in lymph nodes. CD4(+)CD25(+) Treg cells from LTBSC treated rats showed stronger suppressive properties than Treg cells from controls in vitro. Our observations indicate that LTBSC is a useful agent for modulating the autoimmune responses in EAE.
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