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Direct Triggering of the Type I Interferon System by Virus Infection: Activation of a Transcription Factor Complex Containing IRF-3 and CBP/p300

Overview
Journal EMBO J
Date 1998 Mar 28
PMID 9463386
Citations 353
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Abstract

It has been hypothesized that certain viral infections directly activate a transcription factor(s) which is responsible for the activation of genes encoding type I interferons (IFNs) and interferon-stimulated genes (ISGs) via interferon regulatory factor (IRF) motifs present in their respective promoters. These events trigger the activation of defense machinery against viruses. Here we demonstrate that IRF-3 transmits a virus-induced signal from the cytoplasm to the nucleus. In unstimulated cells, IRF-3 is present in its inactive form, restricted to the cytoplasm due to a continuous nuclear export mediated by nuclear export signal, and it exhibits few DNA-binding properties. Virus infection but not IFN treatment induces phosphorylation of IRF-3 on specific serine residues, thereby allowing it to complex with the co-activator CBP/p300 with simultaneous nuclear translocation and its specific DNA binding. We also show that a dominant-negative mutant of IRF-3 could inhibit virus-induced activation of chromosomal type I IFN genes and ISGs. These findings suggest that IRF-3 plays an important role in the virus-inducible primary activation of type I IFN and IFN-responsive genes.

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References
1.
Darnell Jr J, Kerr I, Stark G . Jak-STAT pathways and transcriptional activation in response to IFNs and other extracellular signaling proteins. Science. 1994; 264(5164):1415-21. DOI: 10.1126/science.8197455. View

2.
Pine R, Canova A, Schindler C . Tyrosine phosphorylated p91 binds to a single element in the ISGF2/IRF-1 promoter to mediate induction by IFN alpha and IFN gamma, and is likely to autoregulate the p91 gene. EMBO J. 1994; 13(1):158-67. PMC: 394789. DOI: 10.1002/j.1460-2075.1994.tb06245.x. View

3.
Kawakami T, Matsumoto M, Sato M, Harada H, Taniguchi T, Kitagawa M . Possible involvement of the transcription factor ISGF3 gamma in virus-induced expression of the IFN-beta gene. FEBS Lett. 1995; 358(3):225-9. DOI: 10.1016/0014-5793(94)01426-2. View

4.
Eisenbeis C, Singh H, STORB U . Pip, a novel IRF family member, is a lymphoid-specific, PU.1-dependent transcriptional activator. Genes Dev. 1995; 9(11):1377-87. DOI: 10.1101/gad.9.11.1377. View

5.
Matsuyama T, Grossman A, Mittrucker H, Siderovski D, Kiefer F, Kawakami T . Molecular cloning of LSIRF, a lymphoid-specific member of the interferon regulatory factor family that binds the interferon-stimulated response element (ISRE). Nucleic Acids Res. 1995; 23(12):2127-36. PMC: 306999. DOI: 10.1093/nar/23.12.2127. View