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A critical role of TAK1 in B-cell receptor-mediated nuclear factor kappaB activation.

ABSTRACT: The kinase TAK1 is essential for T-cell receptor (TCR)-mediated nuclear factor kappaB (NF-kappaB) activation and T-cell development. However, the role of TAK1 in B-cell receptor (BCR)-mediated NF-kappaB activation and B-cell development is not clear. Here we show that B-cell-specific deletion of TAK1 impaired the transition from transitional type 2 to mature follicular (FO) B cells and caused a marked decrease of marginal zone (MZ) B cells. TAK1-deficient B cells exhibited an increase of BCR-induced apoptosis and impaired proliferation in response to BCR ligation. Importantly, TAK1-deficient B cells failed to activate NF-kappaB after BCR stimulation. Thus, TAK1 is critical for B-cell maturation and BCR-induced NF-kappaB activation.


PROVIDER: S-EPMC2680363 | BioStudies | 2009-01-01

REPOSITORIES: biostudies

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