An important role of phospholipase Cgamma1 in pre-B-cell development and allelic exclusion. EMBO J 2004 Oct 13;23(20):4007-17
Date
09/17/2004Pubmed ID
15372077Pubmed Central ID
PMC524341DOI
10.1038/sj.emboj.7600405Scopus ID
2-s2.0-8144221736 (requires institutional sign-in at Scopus site) 34 CitationsAbstract
Phospholipase Cgamma1 (PLCgamma1) has been reported to be expressed predominantly in T cells and to play an important role in T-cell receptor signaling. Here we show that PLCgamma1 is expressed throughout B-cell development, with high expression in B-cell progenitors, and is involved in pre-B-cell receptor (pre-BCR) signaling. Reduced expression of PLCgamma1, in the absence of PLCgamma2 (PLCgamma1+/-PLCgamma2-/-), impedes early B-cell development at the pro-B- to pre-B-cell transition and impairs immunoglobulin heavy chain allelic exclusion, hallmarks of defective pre-BCR signaling. In contrast, early B-cell development is largely normal, whereas late B-cell maturation is impaired in the absence of PLCgamma2 alone (PLCgamma2-/-) and overexpression of PLCgamma1 in PLCgamma2-/- mice fails to restore BCR-mediated B-cell proliferation and maturation. These studies reveal an essential role of PLCgamma1, distinct from that of PLCgamma2, in B-cell development.
Author List
Wen R, Chen Y, Schuman J, Fu G, Yang S, Zhang W, Newman DK, Wang DAuthor
Debra K. Newman PhD Investigator in the Blood Research Institute department at BloodCenter of WisconsinMESH terms used to index this publication - Major topics in bold
AllelesAnimals
B-Lymphocytes
Crosses, Genetic
Hematopoietic Stem Cells
Mice
Mice, Knockout
Mice, Transgenic
Phospholipase C gamma
Type C Phospholipases
