Unique and conserved functions of B cell-activating factor of the TNF family (BAFF) in the chicken.
Details
State: Public
Version: author
Serval ID
serval:BIB_7AE6FC2E60E4
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Unique and conserved functions of B cell-activating factor of the TNF family (BAFF) in the chicken.
Journal
International Immunology
ISSN
0953-8178 (Print)
ISSN-L
0953-8178
Publication state
Published
Issued date
2007
Volume
19
Number
2
Pages
203-215
Language
english
Abstract
The chicken represents the best-characterized animal model for B cell development in the so-called gut-associated lymphoid tissue (GALT) and the molecular processes leading to B cell receptor diversification in this species are well investigated. However, the mechanisms regulating B cell development and homeostasis in GALT species are largely unknown. Here we investigate the role played by the avian homologue of B cell-activating factor of the tumor necrosis factor family (BAFF). Flow cytometric analysis showed that the receptor for chicken B cell-activating factor of the tumor necrosis factor family (chBAFF) is expressed by mature and immature B cells. Unlike murine and human BAFF, chBAFF is primarily produced by B cells both in peripheral lymphoid organs and in the bursa of Fabricius, the chicken's unique primary lymphoid organ. In vitro and in vivo studies revealed that chBAFF is required for mature B cell survival. In addition, in vivo neutralization with a decoy receptor led to a reduction of the size and number of B cell follicles in the bursa, demonstrating that, in contrast to humans and mice, in chickens BAFF is also required for the development of immature B cells. Collectively, we show that chBAFF has phylogenetically conserved functions in mature B cell homeostasis but displays unique and thus far unknown properties in the regulation of B cell development in birds.
Keywords
Animals, B-Cell Activating Factor/immunology, B-Cell Activating Factor/metabolism, B-Cell Activation Factor Receptor/immunology, B-Cell Activation Factor Receptor/metabolism, B-Lymphocytes/cytology, B-Lymphocytes/immunology, Blotting, Northern, Cell Differentiation/immunology, Chick Embryo, Chickens, Flow Cytometry, Humans, In Situ Hybridization, Lymphoid Tissue/cytology, Lymphoid Tissue/growth &, development, Phylogeny
Pubmed
Web of science
Open Access
Yes
Create date
19/01/2008 18:30
Last modification date
20/08/2019 15:36