Journal of Experimental Medicine, Vol 160, 108-115, Copyright © 1984 by Rockefeller University Press

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Negative selection in vivo reveals expression of strong Mls determinants in mice with X-linked immunodeficiency

SR Webb, DE Mosier, DB Wilson and J Sprent

Evidence is presented that mice with X-linked immunodeficiency (xid) express strong Mlsa,d determinants, a putative marker of the mature subset of B cells. Although young (3-5 wk) (CBA/N X DBA/2)F1 male (xid+) mice stimulated only very weak mixed lymphocyte reactions (MLR) to Mlsa,d determinants, older mice (greater than 7 wk) regularly elicited conspicuous responses, despite being totally unresponsive to TNP-Ficoll. Expression of Mlsa,d determinants by xid+ mice was also detected by the procedure of negative selection in vivo. Thus BALB/c T cells were totally depleted of Mlsa,d reactivity after blood to lymph recirculation through 10-wk old irradiated xid+ (CBA/N X DBA/2)1 male mice. Significantly, a marked (90%) reduction in the anti-Mlsa,d response also occurred with T cell filtration through 3-wk xid+ mice, i.e., mice that elicit only minimal primary MLR; filtration through 3- wk xid- normal female mice led to near-complete (99%) negative selection. Collectively these data indicate either, (a) that xid+ mice contain appreciable numbers of cells with at least some of the properties of mature B cells, or (b) that the expression of Mlsa,d determinants is not restricted to mature B cells. In either case, B cells from xid mice cannot be viewed as a simple model for immature normal B cells.
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This article has been cited by other articles:

• Ceredig, R. (2002). The ontogeny of B cells in the thymus of normal, CD3{varepsilon} knockout (KO), RAG-2 KO and IL-7 transgenic mice. Int Immunol 14: 87-99 [Abstract] [Full Text]  

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