Journal
IMMUNOLOGIC RESEARCH
Volume 41, Issue 3, Pages 233-247Publisher
HUMANA PRESS INC
DOI: 10.1007/s12026-008-8033-1
Keywords
NF-kappa B; Bcl-3; Bcl-6; p52; p50; germinal center; somatic hypermutation; class switch recombination; B cells
Categories
Funding
- National Cancer Institute [CA 73756, CA 75080]
- National Institutes of Health [AI35098]
- Leukemia and Lymphoma Society
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The NF-kappa B signaling pathway plays a critical role in regulating innate and adaptive immunity. This is clearly evident as mouse models deficient for numerous NF-kappa B subunits and upstream activators exhibit defects in the immune system ranging from impaired development of lymphocytes to defective adaptive immune responses. In this review, we focus on the role that NF-kappa B plays in the germinal center (GC) reaction. Specifically, we discuss the major NF-kappa B subunits and the I kappa B homolog, Bcl-3. Recent findings reveal that Bcl-6, an unrelated transcriptional repressor, is functionally similar to Bcl-3 as both factors may suppress p53 activity to allow for efficient GC formation to occur. We discuss potential mechanisms of action for Bcl-3 and Bcl-6 in this highly complex, but important process of B-cell affinity maturation.
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