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  • Title: The expansion of a CD4+ T cell population bearing a distinctive beta chain in MRL lpr/lpr mice suggests a role for the fas protein in peripheral T cell selection.
    Author: Musette P, Pannetier C, Gachelin G, Kourilsky P.
    Journal: Eur J Immunol; 1994 Nov; 24(11):2761-6. PubMed ID: 7525303.
    Abstract:
    MRL lpr/lpr mice suffer from a systemic lupus erythematosus-like autoimmune disease. The lpr mutation impairs the normal transcription of the fas message, the product of which mediates apoptosis and presumably the proper selection of T cells. We have found an early expansion of CD4+ T cells bearing a distinctive V beta 8.3-D beta 1.1-J beta 1.1 T cell receptor beta chain in the periphery of MRL lpr/lpr mice, which was not detected in MRL +/+ mice nor in the thymus of MRL lpr/lpr mice. Thus, since thymic selection is normal in MRL lpr/lpr mice, we propose that the lpr mutation results in defective negative selection at the periphery.
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