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J Exp Med. 1999 Jun 7;189(11):1747-56.

BAFF, a novel ligand of the tumor necrosis factor family, stimulates B cell growth.

Author information

1
Institute of Biochemistry, University of Lausanne, Switzerland.

Abstract

Members of the tumor necrosis factor (TNF) family induce pleiotropic biological responses, including cell growth, differentiation, and even death. Here we describe a novel member of the TNF family, designated BAFF (for B cell activating factor belonging to the TNF family), which is expressed by T cells and dendritic cells. Human BAFF was mapped to chromosome 13q32-34. Membrane-bound BAFF was processed and secreted through the action of a protease whose specificity matches that of the furin family of proprotein convertases. The expression of BAFF receptor appeared to be restricted to B cells. Both membrane-bound and soluble BAFF induced proliferation of anti-immunoglobulin M-stimulated peripheral blood B lymphocytes. Moreover, increased amounts of immunoglobulins were found in supernatants of germinal center-like B cells costimulated with BAFF. These results suggest that BAFF plays an important role as costimulator of B cell proliferation and function.

PMID:
10359578
PMCID:
PMC2193079
DOI:
10.1084/jem.189.11.1747
[Indexed for MEDLINE]
Free PMC Article

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