| First Author | Heltemes-Harris L | Year | 2005 |
| Journal | Int Immunol | Volume | 17 |
| Issue | 11 | Pages | 1447-61 |
| PubMed ID | 16204304 | Mgi Jnum | J:102308 |
| Mgi Id | MGI:3607350 | Doi | 10.1093/intimm/dxh323 |
| Citation | Heltemes-Harris L, et al. (2005) An antibody VH gene that promotes marginal zone B cell development and heavy chain allelic inclusion. Int Immunol 17(11):1447-61 |
| abstractText | The Ig heavy (H) chain plays a pivotal role in the regulation of primary B cell development through its association with a variety of other proteins including Igalpha and Igbeta, the surrogate light chain components and bona fide L chains, to form transmembrane signaling complexes. Little is known about how alterations in the structure of the H chain variable region influence association with these proteins, or the signaling capacity of the complexes that form. Here we describe a line of V(H) 'knockin' mice in which the transgene-encoded V(H) region differs by eight amino acid residues from the V(H) region in a V(H) knockin line we previously constructed and characterized. The transgenic H chain locus in the line of mice we characterized earlier efficiently promotes H chain allelic exclusion and all phases of primary B cell development, resulting in the generation of mature B1, marginal zone (MZ) and follicular (FO) B cell compartments. In contrast, the transgenic H chain locus in the new line fails to enforce allelic exclusion, as evidenced by the majority of peripheral B cells expressing two H chains on their surfaces. Moreover, this locus inefficiently drives bone marrow B lymphopoiesis and FO B cell development. However, this H chain locus does promote MZ B cell development, from precursors that appear to be generated during fetal and neonatal life. We discuss these data in the context of previous findings on the influence of Ig H chain structure on primary B cell development. |
