Synapsin-induced proliferation of T-cell lines against myelin basic protein obtained from rats with experimental autoimmune encephalomyelitis

Alicia L. Degano, German A. Roth

Research output: Contribution to journalArticlepeer-review

Abstract

We have previously described that antibodies and T cells against myelin basic protein (MBP) rose under conditions to induce acute experimental autoimmune encephalomyelitis (EAE) bind other proteins present in the synaptosomal fraction, some of them identified as synapsin I. The aim of this study was to evaluate whether anti-MBP T-cell lines can be also activated by synapsin. The analysis of rat anti-MBP T-cell lines cultured with each antigen showed that these cells responded also to purified rat synapsin and to the amino terminal portion of this protein. This recognition originated a proliferative response with a concomitant pattern of cytokine secretion similar to that induced by MBP itself implicating that this recognition would be mediated by the T-cell receptor. On the other hand, anti-synapsin T-cell lines were not capable of responding to MBP stimulation. Therefore, the immunological cross-reactivity between both proteins occurs only in one direction and these cross-reactive cells would be elicited only in animals sensitized with MBP. A possible implication of immunological agents against MBP cross-reactive with extra-myelin proteins in the process of EAE is considered.

Original languageEnglish (US)
Pages (from-to)661-666
Number of pages6
JournalAutoimmunity
Volume42
Issue number8
DOIs
StatePublished - Nov 2009
Externally publishedYes

Keywords

  • Autoimmunity
  • Cytokines
  • Experimental autoimmune encephalomyelitis
  • Myelin basic protein
  • Synapsin
  • Synaptosomal antigens

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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