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Wasserman R , Li YS , Shinton SA , Carmack CE , Manser T , Wiest DL , Hayakawa K , Hardy RR
A novel mechanism for B cell repertoire maturation based on response by B cell precursors to pre-B receptor assembly
Journal of Experimental Medicine. 1998 Jan 19;187(2) :259-264
AbstractThe expression of different sets of immunoglobulin specificities by fetal and adult B lymphocytes is a long- standing puzzle in immunology. Recently it has become clear that production of immunoglobulin mu heavy chain and subsequent assembly with a surrogate light chain to form the pre-B cell receptor complex is critical for development of B cells. Hers we show that instead of promoting pre-B cell progression as in adult bone marrow, this complex inhibits pre-B cell growth in fetal liver. Curiously, we identify a fetal-associated V(H)11 mu heavy chain that allows continued pre-B proliferation in fetal liver. interestingly, this heavy chain does not associate efficiently with a surrogate light chain, providing a previously unrecognized mechanism for skewing the expression of distinctive V-H genes toward fetal through early neonatal life.
NotesTimes Cited: 41 English Article YU549 J EXP MED