Age-dependent deficiency of B lymphocyte lineage precursors in NZB mice

H. Jyonouchi, P. W. Kincade, K. S. Landreth, G. Lee, R. A. Good, M. Eric Gershwin

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31 Scopus citations


Adult NZB mice (>15 wk old) have very few bone marrow cells that can give rise to sIg+ clonable B cells during liquid culture. This deficiency corresponds to extremely low numbers of cells with cytoplasmic but not surface μ chains of IgM and reduced numbers of cells bearing a high molecular weight B-lineage antigen. Depletion of Thy-1-bearing cells and appropriate mixing experiments did not provide evidence either that suppressor cells are responsible for this phenomenon or that accessory cells are defective in NZB mice. Nor did it seem that B cells were being produced in extramedullary sites. B cell precursors were detectable in very young NZB mice, exceeded control values at 4-5 wk of age, and then declined rapidly. In contrast, these persisted for >1 yr in normal BALB/c, DBA/2, and CBA/H mice. It appears possible that intermediate stages in B-lineage differentiation become prematurely exhausted through an accelerated aging process in NZB mice. These chronological changes have implications for understanding the sequence of events that lead to B lymphocyte formation and the processes that normally regulate it.

Original languageEnglish (US)
Pages (from-to)1665-1678
Number of pages14
JournalJournal of Experimental Medicine
Issue number6
StatePublished - 1982
Externally publishedYes

ASJC Scopus subject areas

  • Immunology


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