Premium
NF‐κB factors control the induction of NFATc1 in B lymphocytes
Author(s) -
Muhammad Khalid,
Alrefai Hani,
Marienfeld Ralf,
Pham Duong Anh Thuy,
Murti Krisna,
Patra Amiya K.,
Avots Andris,
Bukur Valesca,
Sahin Ugur,
Kondo Eisaku,
KleinHessling Stefan,
Serfling Edgar
Publication year - 2014
Publication title -
european journal of immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.272
H-Index - 201
eISSN - 1521-4141
pISSN - 0014-2980
DOI - 10.1002/eji.201444756
Subject(s) - biology , nf κb , microbiology and biotechnology , control (management) , immunology , signal transduction , management , economics
In peripheral lymphocytes, the transcription factors (TFs) NF‐κB, NFAT, and AP‐1 are the prime targets of signals that emerge from immune receptors. Upon activation, these TFs induce gene networks that orchestrate the growth, expansion, and effector function of peripheral lymphocytes. NFAT and NF‐κB factors share several properties, such as a similar mode of induction and architecture in their DNA‐binding domain, and there is a subgroup of κB‐like DNA promoter motifs that are bound by both types of TFs. However, unlike NFAT and AP‐1 factors that interact and collaborate in binding to DNA, NFAT, and NF‐κB seem neither to interact nor to collaborate. We show here that NF‐κB1/p50 and c‐Rel, the most prominent NF‐κB proteins in BCR‐induced splenic B cells, control the induction of NFATc1/αA, a prominent short NFATc1 isoform. In part, this is mediated through two composite κB/NFAT‐binding sites in the inducible Nfatc1 P1 promoter that directs the induction of NFATc1/αA by BCR signals. In concert with coreceptor signals that induce NF‐κB factors, BCR signaling induces a persistent generation of NFATc1/αA. These data suggest a tight connection between NFATc1 and NF‐κB induction in B lymphocytes contributing to the effector function of peripheral B cells.