BLyS: Member of the Tumor Necrosis Factor Family and B Lymphocyte Stimulator
Paul A. Moore,
Ornella Belvedere,
Amy Orr,
Krystyna Pieri,
David W. LaFleur,
Ping Feng,
Daniel Soppet,
Meghan Charters,
Reiner Gentz,
David Parmelee,
Yuling Li,
Olga Galperina,
Judith Giri,
Viktor Roschke,
Bernardetta Nardelli,
Jeffrey Carrell,
Svetlana Sosnovtseva,
Wilbert Greenfield,
Steven M. Ruben,
Henrik S. Olsen,
James Fikes,
David M. Hilbert
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The tumor necrosis factor (TNF) superfamily
of cytokines includes both soluble and membrane-bound proteins that
regulate immune responses. A member of the human TNF family, BLyS (B
lymphocyte stimulator), was identified that induced B cell
proliferation and immunoglobulin secretion. BLyS expression on human
monocytes could be up-regulated by interferon-
. Soluble BLyS
functioned as a potent B cell growth factor in costimulation assays.
Administration of soluble recombinant BLyS to mice disrupted splenic B
and T cell zones and resulted in elevated serum immunoglobulin
concentrations. The B cell tropism of BLyS is consistent with its
receptor expression on B-lineage cells. The biological profile of BLyS
suggests it is involved in monocyte-driven B cell activation.
Human Genome Sciences, 9410 Key West Avenue, Rockville, MD 20850, USA.
*
To whom correspondence should be addressed. E-mail:
david_hilbert{at}hgsi.com