| First Author | Clise-Dwyer K | Year | 2001 |
| Journal | Immunogenetics | Volume | 53 |
| Issue | 9 | Pages | 729-35 |
| PubMed ID | 11862404 | Mgi Jnum | J:75340 |
| Mgi Id | MGI:2176353 | Doi | 10.1007/s00251-001-0382-z |
| Citation | Clise-Dwyer K, et al. (2001) Genetic studies of B-lymphocyte deficiency and mastocytosis in strain A/WySnJ mice. Immunogenetics 53(9):729-35 |
| abstractText | The A/WySnJ mouse, but not the related A/J strain, has peripheral B-lymphocyte deficiency and mastocytosis. Minimally, two quantitative trait loci (QTLs) control the B-cell deficiency in (A/WySnJ x CAST/Ei)F2 intercross mice; one of them, Bcmd-1, mapped to Chromosome (Chr) 15. Several QTLs controlled the mastocytosis in this intercross, and it was not possible to determine whether any of them co-segregated with Bcmd-1. We have now mapped a second QTL controlling the B-cell deficiency, Bcmd-2, to Chr 4. Furthermore, we narrowed the map position of Bcmd-1 to <2.0 cM. Both QTLs have been confirmed through the construction of AW. Bcmd-1(c), AW. Bcmd-2(c), and AW. Bcmd-1(c)Bcmd-2(c) recombinant congenic strains. The Bcmd-1 locus is the major regulator of B-cell homeostasis, while Bcmd-2 is the minor regulator, and their effects are additive, as shown by splenic B-cells analysis in these congenic strains. In addition, Bcmd-2 or a linked locus controls mastocytosis, while Bcmd-1 does not, as indicated by splenic mast cell analysis in the congenic strains. Thus, the major genetic controls on B-cell homeostasis and mast cell homeostasis in A/WySnJ mice are asserted by distinct genes. |
