期刊
MOLECULAR IMMUNOLOGY
卷 46, 期 16, 页码 3278-3282出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.molimm.2009.07.029
关键词
NF-kappa B; TRAF1; BAFF-R
Tumor necrosis factor receptor-associated factor 1 (TRAF1) is unique among the members of the TRAF family, as it lacks the N-terminal RING/zinc-finger domain. Also the function of TRAF1 is not clearly established, with many papers reporting contradictory results. Here we show that TRAF1 interacts with BAFF receptor, a member of the TNF receptor family, and positively regulates activation of the alternative NF-kappa B pathway. Ectopic expression of TRAF1 causes degradation of TRAF3, stabilization of NIK, and processing of p100 to produce the mature form p52. In addition, we show that knocking-down expression of TRAF1 in the Hodgkin's disease derived cell line L1236, interfere with p100 processing and with p52 mediate gene transcription. Collectively these results support a role for TRAF1 as a positive regulator of the NF-kappa B alternative pathway. (C) 2009 Elsevier Ltd. All rights reserved.
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