IRF4

IRF4

A gene on chromosome 6p25-p23 that encodes a member of the interferon regulatory transcription factor (IRF) family, which is characterised by an unique tryptophan pentad-repeat DNA-binding domain. IRF4 is lymphocyte specific and negatively regulates Toll-like-receptor (TLR)-signalling, which is central to activating the innate and adaptive immune systems.

Molecular pathology
A chromosomal translocation involving IRF4 and the IgH locus, t(6;14)(p25;q32), has been linked to myeloma.
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The top 7 factors with significant regression in yellow module are shown in Table 2, including adenosine receptor A3 (ADORA3), toll-like receptor 7 (TLR7), interferon regulatory factor (IRF4), CC chemokine receptor 4 (CCR4), reticulon-1 (RTN1), growth factor receptor-bound protein 2 (GRB2)-binding adaptor protein (GAPT), and GRB2-related adapter protein 2 (GRAP2).
Mature IL-1[beta] can enhance Th17 differentiation in the lungs by regulating IRF4 and RORyT expression during Th17 polarization and maintaining cytokine production of effector Th17 cells [13].
It shows that TFs such as BCL11A, BCL3, EBF, EBF1, ERa, ERRA, FOXA1/2, HNF4A, HNF4G, IRF4, MAfF, NANOG, POU5F1, PU1, SETDB1, STAT2/3, and ZNF274 were significantly hypermethylated in the OST-7D group compared with those in the OST-0D group, and TFs including AP-2[alpha], BAF170, c-Fos, c-JUN, CEBPB, GATA2, GATA3, GR, MAfF, NF[kappa]B, P300, SIRT6, TAL1, and TCF4 were significantly hypomethylated in the OST-7D group compared with those in the OST-0D group (Supplementary Figure 1).
Indeed, mTORC2-deficient M2 macrophages were shown to display impaired glucose metabolism and reduced PPAR[gamma] content, mitochondrial biogenesis, and fatty acid oxidation, effects that are mediated by Akt and, at least in part, by the transcriptional factor interferon regulatory factor 4 (IRF4) [119].
In addition, IL-4 induces c-Myc that activates the IRF4 axis that inhibits IRF5-mediated M1 polarization, resulting in the M2 promotion [22].
analyzed 9 PCNSLs and identified recurrent somatic mutations in 37 genes involved in key biological processes, including transcription ( ETV6, IRF2BP2, EBF1, IRF4, and TBL1XR1 ), cell cycle ( PIM1, BTG1 ), nucleosome assembly ( HIST1H1D, HIST1H2AC ), and cell adhesion ( MUC16, ACTG1 ), as well as NF-?B and B-cell or T-cell receptor signaling pathways.[sup][54] Whether PCNSL initially arises inside or outside of the CNS has been a mystery for decades and still confuses us today, the latest discovery from Kazutaka et al.
This other enzyme, called IRF4, is a transcription factor that regulates the expression of a number of genes and proved key for controlling whether Tr1 cells developed.
Additionally, genes regulated by activation of the SYK kinase and IRF4 transcription factor are significantly enriched in SLE naive and memory T cells, suggesting they are key drivers of T cell activation in SLE and a core part of the transcriptional regulatory circuitry driving the disease.
Last year, for the first time, researchers at University College of London identified a gene involved in gray hair, the interferon regulatory factor 4 gene (IRF4).
In TH2 cells, NLRP3 bounded the II4 promoter and transactivated it along with the transcription factor IRF4. Nlrp3-deficient TH2 cells supported melanoma tumor growth in an IL-4-dependent manner and also promoted asthma-like symptoms.
Pernis, "IRF4 and its regulators: evolving insights into the pathogenesis of inflammatory arthritis?" Immunological Reviews, vol.