Regulation of B lymphocyte development by the truncated immunoglobulin heavy chain protein Dmu.
J Exp Med
; 187(5): 703-9, 1998 Mar 02.
Article
in En
| MEDLINE
| ID: mdl-9480980
ABSTRACT
The development of B lymphocytes from progenitor cells is dependent on the expression of a pre-B cell-specific receptor made up by a mu heavy chain associated with the surrogate light chains, immunoglobulin (Ig)alpha, and Igbeta. A variant pre-B cell receptor can be formed in which the mu heavy chain is exchanged for a truncated mu chain denoted Dmu. To investigate the role of this receptor in the development of B cells, we have generated transgenic mice that express the Dmu protein in cells of the B lineage. Analysis of these mice reveal that Dmu expression leads to a partial block in B cell development at the early pre-B cell stage, probably by inhibiting VH to DHJH rearrangement. Furthermore, we provide evidence that Dmu induces VL to JL rearrangements.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
B-Lymphocytes
/
Receptors, Antigen, B-Cell
/
Gene Rearrangement, B-Lymphocyte, Heavy Chain
/
Immunoglobulin mu-Chains
Limits:
Animals
Language:
En
Journal:
J Exp Med
Year:
1998
Document type:
Article