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  • Title: Relative susceptibility of SJL/J and B10.S mice to experimental allergic encephalomyelitis is correlated with high and low responsiveness to myelin basic protein.
    Author: Binder TA, Clark RB, Goldschneider I.
    Journal: J Neuroimmunol; 1991 Dec; 35(1-3):31-43. PubMed ID: 1720137.
    Abstract:
    SJL/J mice are highly susceptible to actively induced experimental allergic encephalomyelitis (EAE), whereas B10.S mice are not. Yet both strains share the H-2s major histocompatibility complex (MHC) haplotype. In order to help determine the cellular basis for the disparate susceptibility to EAE, the antigen-specific in vitro proliferative responses of lymph node (LN) T cells from SJL/J and B10.S mice primed with porcine myelin basic protein (MBP) were assessed. The results indicated that SJL/J mice were high responders and B10.S mice were low responders to both porcine and murine MBP, as demonstrated by limiting dilution analyses and cloning efficiency analysis of MBP-reactive T cells. The low response of B10.S mice to MBP was not due to elevated suppressor cell activity or to a discernible defect in antigen-presenting cell activity. Rather, it appeared to be due to a paucity (or defect in function) of high affinity MBP-reactive T cells in B10.S as compared to SJL/J mice. This difference in MBP responsiveness must, by necessity, be linked to non-MHC background genes. Therefore, assuming that the relative number of MBP-reactive T cells parallels that of EAE-effector T cells in SJL/J and B10.S mice (as separate in vivo studies indicate), the present results suggest that differences in the T cell repertoire for the encephalitogenic determinants of MBP may contribute significantly to the observed differences in antigen reactivity, and may relate to differences in susceptibility to EAE.
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