scholarly journals Interferon Regulatory Factor-7 Synergizes with Other Transcription Factors through Multiple Interactions with p300/CBP Coactivators

2003 ◽  
Vol 278 (18) ◽  
pp. 15495-15504 ◽  
Author(s):  
Hongmei Yang ◽  
Charles H. Lin ◽  
Gang Ma ◽  
Michael O. Baffi ◽  
Marc G. Wathelet
Keyword(s):  
Transcription Factors ◽  
Interferon Regulatory Factor ◽  
Regulatory Factor ◽  
Interferon Regulatory Factor 7 ◽  
Multiple Interactions

scholarly journals Mutations in P63 and IRF-6 Present with Overlapping Craniofacial Defects: A study from Lebanon

2019 ◽  
pp. 1-3
Author(s):  
Mazen Kurban ◽  
Edgar Jabbour ◽  
Lamiaa Hamie ◽  
Mazen Kurban ◽  
Pamela Kassabian
Keyword(s):  
Transcription Factors ◽  
Cleft Lip ◽  
Interferon Regulatory Factor ◽  
Craniofacial Development ◽  
Regulatory Factor ◽  
Van Der Woude Syndrome ◽  
Interferon Regulatory Factor 6 ◽  
Cleft Lip Palate ◽  
Exon 9 ◽  
Craniofacial Defects

Interferon Regulatory Factor 6 (IRF-6) and p63 are two vital transcription factors implicated in normal craniofacial development. In this report, we present a family with Van Der Woude Syndrome (VWS) with a mutation in exon 9 of IRF-6 gene and a phenotypically overlapping case of Rapp-Hodgkin Syndrome (RHS) resulting from a mutation in the p63 gene. Members from both families presented with congenital lip pits and cleft lip/palate. The RHS case had additional ectodermal features that underscore the upstream nature of p63 in the complex p63-IRF-6 interactive pathway.

scholarly journals DHAV-1 Blocks the Signaling Pathway Upstream of Type I Interferon by Inhibiting the Interferon Regulatory Factor 7 Protein

2021 ◽  
Vol 12 ◽  
Author(s):  
Yalan Lai ◽  
Xiaoyan Xia ◽  
Anchun Cheng ◽  
Mingshu Wang ◽  
Xumin Ou ◽  
...  
Keyword(s):  
Immune Response ◽  
Innate Immunity ◽  
Viral Protein ◽  
Interferon Regulatory Factor ◽  
Host Cells ◽  
Luciferase Reporter ◽  
Type I ◽  
Dependent Manner ◽  
Regulatory Factor ◽  
Interferon Regulatory Factor 7

Duck hepatitis A virus (DHAV), which mainly infects 1- to 4-week-old ducklings, has a fatality rate of 95% and poses a huge economic threat to the duck industry. However, the mechanism by which DHAV-1 regulates the immune response of host cells is rarely reported. This study examined whether DHAV-1 contains a viral protein that can regulate the innate immunity of host cells and its specific regulatory mechanism, further exploring the mechanism by which DHAV-1 resists the host immune response. In the study, the dual-luciferase reporter gene system was used to screen the viral protein that regulates the host innate immunity and the target of this viral protein. The results indicate that the DHAV-1 3C protein inhibits the pathway upstream of interferon (IFN)-β by targeting the interferon regulatory factor 7 (IRF7) protein. In addition, we found that the 3C protein inhibits the nuclear translocation of the IRF7 protein. Further experiments showed that the 3C protein interacts with the IRF7 protein through its N-terminus and that the 3C protein degrades the IRF7 protein in a caspase 3-dependent manner, thereby inhibiting the IFN-β-mediated antiviral response to promote the replication of DHAV-1. The results of this study are expected to serve as a reference for elucidating the mechanisms of DHAV-1 infection and pathogenicity.

scholarly journals Role of interferon regulatory factor 7 in corneal endothelial cells after HSV-1 infection

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fumie Ohtani ◽  
Dai Miyazaki ◽  
Yumiko Shimizu ◽  
Tomoko Haruki ◽  
Satoru Yamagami ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Antigen Presentation ◽  
Mhc Class I ◽  
Interferon Regulatory Factor ◽  
Class I ◽  
Acquired Immunity ◽  
Corneal Endothelial Cells ◽  
Regulatory Factor ◽  
Interferon Regulatory Factor 7 ◽  
Hsv 1

AbstractViral infections of the cornea including herpes simplex virus 1 (HSV-1) cause visual morbidity, and the corneal endothelial cell damage leads to significant visual impairment. Interferon regulatory factor 7 (IRF7) has been identified as a significant regulator in corneal endothelial cells after an HSV-1 infection. To examine the role played by IRF7, the DNA binding domain (DBD) of IRF7 of human corneal endothelial cells (HCEn) was disrupted. An RNAi inhibition of IRF7 and IRF7 DBD disruption (IRF7 ∆DBD) led to an impairment of IFN-β production. Impaired IFN-β production by IRF7 ∆DBD was regained by IRF7 DNA transfection. Transcriptional network analysis indicated that IRF7 plays a role in antigen presentation function of corneal endothelial cells. When the antigen presentation activity of HCEn cells were examined for priming of memory CD8 T cells, IRF7 disruption abolished the anti-viral cytotoxic T lymphocyte (CTL) response which was dependent on the major histocompatibility complex (MHC) class I. To further examine the roles played by IRF7 in CTL induction as acquired immunity, the contribution of IRF7 to MHC class I-mediated antigen presentation was assessed. Analysis of IRF7 ∆DBD cells indicated that IRF7 played an unrecognized role in MHC class I induction, and the viral infection induced-MHC class I induction was abolished by IRF7 disruption. Collectively, the IRF7 in corneal endothelial cells not only contributed to type I IFN response, but also to the mediation of viral infection-induced MHC class I upregulation and priming of CD8 arm of acquired immunity.

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