Anti-IRF3 antibody

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Key transcriptional regulator of type I interferon (IFN)-dependent immune responses which plays a critical role in the innate immune response against DNA and RNA viruses (PubMed : 22394562, PubMed : 24049179, PubMed : 25636800, PubMed : 27302953, PubMed : 31340999, PubMed : 36603579, PubMed : 8524823, PubMed : 39362857). Regulates the transcription of type I IFN genes (IFN-alpha and IFN-beta) and IFN-stimulated genes (ISG) by binding to an interferon-stimulated response element (ISRE) in their promoters (PubMed : 11846977, PubMed : 16846591, PubMed : 16979567, PubMed : 20049431, PubMed : 32972995, PubMed : 36603579, PubMed : 8524823). Acts as a more potent activator of the IFN-beta (IFNB) gene than the IFN-alpha (IFNA) gene and plays a critical role in both the early and late phases of the IFNA/B gene induction (PubMed : 16846591, PubMed : 16979567, PubMed : 20049431, PubMed : 36603579). Found in an inactive form in the cytoplasm of uninfected cells and following viral infection, double-stranded RNA (dsRNA), or toll-like receptor (TLR) signaling, is phosphorylated by IKBKE and TBK1 kinases (PubMed : 22394562, PubMed : 25636800, PubMed : 27302953, PubMed : 36603579). This induces a conformational change, leading to its dimerization and nuclear localization and association with CREB binding protein (CREBBP) to form dsRNA-activated factor 1 (DRAF1), a complex which activates the transcription of the type I IFN and ISG genes (PubMed : 16154084, PubMed : 27302953, PubMed : 33440148, PubMed : 36603579). Can activate distinct gene expression programs in macrophages and can induce significant apoptosis in primary macrophages (PubMed : 16846591). In response to Sendai virus infection, is recruited by TOMM70 : HSP90AA1 to mitochondrion and forms an apoptosis complex TOMM70 : HSP90AA1 : IRF3 : BAX inducing apoptosis (PubMed : 25609812). Key transcription factor regulating the IFN response during SARS-CoV-2 infection (PubMed : 33440148).