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Interferon regulatory factor

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https://www.readbyqxmd.com/read/28531759/interferon-regulatory-factors-a-key-to-tumour-immunity
#1
REVIEW
Yan-Jie Chen, Jing Li, Nan Lu, Xi-Zhong Shen
Interferon regulatory factors (IRFs), which have 10 members, belong to the transcription factor family and were named because of the regulation of interferon expression. They play important roles in the immune regulation, cell differentiation, cell apoptosis, and cell cycle regulation. This article will review the functional characteristics and immune activity of the family members, especially in the role of cell differentiation and autoimmune diseases. Intensive studies will help uncover the pathogenesis of the disease in a more comprehensive view, and provide novel targets for disease treatment...
May 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28529614/irf4-mum1-expression-is-associated-with-poor-survival-outcomes-in-patients-with-peripheral-t-cell-lymphoma
#2
Mi Hwa Heo, Ha Young Park, Young Hyeh Ko, Won Seog Kim, Seok Jin Kim
Background: Interferon regulatory factor 4 (IRF4)/multiple myeloma oncogene-1 (MUM1) is a member of the interferon regulatory factor family of transcriptional factors. Although IRF4/MUM1 expression is associated with aggressiveness of B-cell lymphoma and multiple myeloma, the prognostic value of IRF4/MUM1 expression in peripheral T-cell lymphoma (PTCL) is unclear. Methods: We analyzed a tissue array from 69 patients diagnosed with PTCL. The expression levels of IRF4/MUM1 and associated proteins such as MYC and Ikaros were analyzed by immunohistochemistry...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28528440/the-human-cmv-ie1-protein-an-offender-of-pml-nuclear-bodies
#3
Myriam Scherer, Eva-Maria Schilling, Thomas Stamminger
PML nuclear bodies (PML-NBs) are SUMOylation-dependent, highly complex protein assemblies that accumulate in the interchromosomal territories of the cell nucleus. Research of the last two decades revealed that many viruses have evolved effector proteins that modify PML-NBs. This correlates with antagonization of individual PML-NB components which act as host cell restriction factors. The multifunctional immediate-early protein IE1 of human cytomegalovirus directly interacts with the PML protein resulting in a disruption of the dot-like structure of PML-NBs...
2017: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/28528205/heterotrimeric-complex-of-p38-mapk-pkc%C3%AE-and-tirap-is-required-for-ap1-mediated-inflammatory-response
#4
Mirza S Baig, Dongfang Liu, Kannan Muthu, Anjali Roy, Uzma Saqib, Adnan Naim, Syed M Faisal, Mansi Srivastava, Rohit Saluja
Inflammation could be described as a physiological response of the body to tissue injury, pathogen invasion, and irritants. During the inflammatory phase, cells of both the innate as well as adaptive immune system are activated and recruited to the site of inflammation. These mediators are downstream targets for the transcription factors; activator protein-1 (AP1), nuclear factor kappa-light-chain-enhancer (NF-κB), signal transducers and activators of transcription factors (STAT1), as well as interferon regulatory factors (IRFs), which control the expression of most immunomodulatory genes...
May 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28525378/irf5-is-elevated-in-childhood-onset-sle-and-regulated-by-histone-acetyltransferase-and-histone-deacetylase-inhibitors
#5
Jin Shu, Ling Li, Lan-Bo Zhou, Jun Qian, Zhi-Dan Fan, Li-Li Zhuang, Lu-Lu Wang, Rui Jin, Hai-Guo Yu, Guo-Ping Zhou
Interferon regulatory factor 5 (IRF5) plays a critical role in the induction of type I interferon, proinflammatory cytokines and chemokines, and participates in the pathogenesis of autoimmune diseases such as systemic lupus erythematosus (SLE). However, the relationship between IRF5 and childhood-onset SLE remains elusive. In the present study, we demonstrated that levels of mRNA expression of IRF5, IFN-α, and Sp1 were significantly increased in childhood-onset SLE, as seen on quantitative real-time PCR, and the expression of Sp1 and IFN-α was positively correlated with IRF5...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28512729/protective-effects-of-nebivolol-against-interleukin-1%C3%AE-il-1%C3%AE-induced-type-ii-collagen-destruction-mediated-by-matrix-metalloproteinase-13-mmp-13
#6
Zhigang Li, Baoyi Liu, Dewei Zhao, BenJie Wang, Yupeng Liu, Yao Zhang, Fengde Tian, Borui Li
The pathological progression of osteoarthritis (OA) involves degradation of articular cartilage matrix. Type II collagen is the main component of cartilage matrix, which is degraded by pro-inflammatory cytokines such as IL-1β mediated by MMP-13. Nebivolol, a licensed drug used for the treatment of hypertension in clinics, displays its anti-inflammatory capacity in various conditions. However, whether Nebivolol has a protective effect on cartilage matrix degradation has not been reported before. In this study, we investigated the effects of Nebivolol on regulating the expression of MMP-13 and degradation of type II collagen...
May 17, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28512062/hsa-mir-513b-5p-suppresses-cell-proliferation-and-promotes-p53-expression-by-targeting-irf2-in-testicular-embryonal-carcinoma-cells
#7
Xiaorong Wang, Xiansheng Zhang, Guishuan Wang, Lu Wang, Yu Lin, Fei Sun
Previous studies have reported the miR-513b is located on the X chromosome and is preferentially expressed in testis. However, the underlying mechanisms of miR-513b involved in spermatogenesis remains unknown. In this study, we found that hsa-miR-513b-5p was highly expressed in the testes of infertile males with maturation arrest compared with normal controls. Overexpression of hsa-miR-513b-5p suppressed testicular embryonal carcinoma (NT2) cell proliferation and induced apoptosis in vitro, whereas silencing of hsa-miR-513b-5p reversed these effects...
May 13, 2017: Gene
https://www.readbyqxmd.com/read/28506283/prolactin-blocks-the-expression-of-receptor-activator-of-nuclear-factor-%C3%AE%C2%BAb-ligand-and-reduces-osteoclastogenesis-and-bone-loss-in-murine-inflammatory-arthritis
#8
Maria G Ledesma-Colunga, Norma Adán, Georgina Ortiz, Mariana Solís-Gutiérrez, Fernando López-Barrera, Gonzalo Martínez de la Escalera, Carmen Clapp
BACKGROUND: Prolactin (PRL) reduces joint inflammation, pannus formation, and bone destruction in rats with polyarticular adjuvant-induced arthritis (AIA). Here, we investigate the mechanism of PRL protection against bone loss in AIA and in monoarticular AIA (MAIA). METHODS: Joint inflammation, trabecular bone loss, and osteoclastogenesis were evaluated in rats with AIA treated with PRL (via osmotic minipumps) and in mice with MAIA that were null (Prlr-/-) or not (Prlr+/+) for the PRL receptor...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28505515/rhob-induces-the-production-of-proinflammatory-cytokines-in-tlr-triggered-macrophages
#9
Shuyuan Liu, Lisong Huang, Zhusen Lin, Yuanqin Hu, Ruifeng Chen, Liqiu Wang, Yi Shan
Toll-like receptors (TLRs) are the primary sensors detecting conserved molecular patterns on microorganisms, thus acting as important components of innate immunity against invading pathogens. Many positive and negative regulators of TLR-triggered signaling have been identified. The Rho GTPase RhoB plays a key role in cell migration, division and polarity; however, the function and regulatory mechanisms of RhoB in TLR ligand-triggered innate immune responses remain to be investigated. Here, we report that the expression of RhoB is induced by TLR agonists (lipopolysaccharide (LPS), CpG, poly(I:C)) in macrophages...
May 12, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28503991/platelet-concentrates-modulate-myeloid-dendritic-cell-immune-responses
#10
Katrina K Ki, Helen M Faddy, Robert L Flower, Melinda M Dean
Platelet transfusion has been reported to modulate the recipients' immune system. To date, the precise mechanism(s) driving poor patient outcomes (e.g., increased rate of mortality, morbidity, infectious complications and prolonged hospital stays) following platelet transfusion are largely undefined. To determine the potential for platelet concentrates (PC) to modulate responses of crucial immune regulatory cells, a human in vitro whole blood model of transfusion was established. Maturation and activation of human myeloid dendritic cells (mDC) and the specialized subset blood DC antigen (BDCA)3(+) DC were assessed following exposure to buffy-coat derived PC at day (D)2 (fresh) and D5 (date-of-expiry)...
May 15, 2017: Platelets
https://www.readbyqxmd.com/read/28497800/reciprocal-regulation-of-the-il9-locus-by-counteracting-activities-of-transcription-factors-irf1-and-irf4
#11
Lucia Campos Carrascosa, Matthias Klein, Yohko Kitagawa, Christina Lückel, Federico Marini, Anika König, Anna Guralnik, Hartmann Raifer, Stefanie Hagner-Benes, Diana Rädler, Andreas Böck, Cholho Kang, Michael Lohoff, Holger Garn, Bianca Schaub, Friederike Berberich-Siebelt, Shimon Sakaguchi, Tobias Bopp, Magdalena Huber
The T helper 9 (Th9) cell transcriptional network is formed by an equilibrium of signals induced by cytokines and antigen presentation. Here we show that, within this network, two interferon regulatory factors (IRF), IRF1 and IRF4, display opposing effects on Th9 differentiation. IRF4 dose-dependently promotes, whereas IRF1 inhibits, IL-9 production. Likewise, IRF1 inhibits IL-9 production by human Th9 cells. IRF1 counteracts IRF4-driven Il9 promoter activity, and IRF1 and IRF4 have opposing function on activating histone modifications, thus modulating RNA polymerase II recruitment...
May 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28495792/cd70-reverse-signaling-enhances-nk-cell-function-and-immunosurveillance-in-cd27-expressing-b-cell-malignancies
#12
Mohamad F Al Sayed, Carla A Ruckstuhl, Tamara Hilmenyuk, Christina Claus, Jean-Pierre Bourquin, Beat C Bornhauser, Ramin Radpour, Carsten Riether, Adrian F Ochsenbein
The interaction of the tumor necrosis factor receptor (TNFR) CD27 with its ligand CD70 is an emerging target to treat cancer. CD27 signaling provides costimulatory signals to cytotoxic T cells but also increases the frequency of regulatory T cells (Tregs). Similar to other TNFR-ligands, CD70 has been shown to initiate intracellular signaling pathways (CD70 reverse signaling). CD27 is expressed on a majority of B cell non-Hodgkin lymphoma (NHL), but its role in the immune control of lymphoma and leukemia is unknown...
May 11, 2017: Blood
https://www.readbyqxmd.com/read/28494546/-regulatory-effect-of-bone-marrow-mesenchymal-stem-cells-on-polarization-of-macrophages
#13
Y Hou, X Zhou, W L Cai, C C Guo, Y Han
Objective: To examine the regulatory effect of bone marrow mesenchymal stem cells (BM-MSCs) on the polarization of bone marrow-derived macrophages, and to provide a theoretical support for the application of mesenchymal stem cells in the treatment of liver fibrosis. Methods: MSCs and macrophages were first isolated from the bone marrow of mice. Macrophages were polarized to M1 macrophages with lipopolysaccharide (LPS) and interferon-γ (IFN-γ), and to M2 macrophages with interleukin-4 (IL-4). The macrophages were then co-cultured with BM-MSCs in a Transwell for 24 h, and changes in the percentages of M1 and M2 macrophages were examined using flow cytometry...
April 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28493975/molecular-characterization-expression-of-chicken-tbk1-gene-and-its-effect-on-irf3-signaling-pathway
#14
Yan Wang, Yue Yin, Xi Lan, Fei Ye, Kai Tian, Xiaoling Zhao, Huadong Yin, Diyan Li, Hengyong Xu, Yiping Liu, Qing Zhu
TRAF family member-associated NF-κB activator (TANK)-binding kinase1 (TBK1) is a serine-threonine kinase at the crossroads of multiple interferon (IFN)-inducing signaling pathways in innate immunity. The importance of TBK1 in antiviral immunity is well established in mammal models, but in chicken, the molecular characterization and potential function of TBK1 remain unclear. In the present study, the open-reading frame (ORF) of chicken TBK1 (chTBK1) was cloned and characterized. The sequencing results revealed that the chTBK1 ORF consists of 2190 base pairs (bp) encoding a deduced protein of 729 amino acid residues...
2017: PloS One
https://www.readbyqxmd.com/read/28492513/an-aaag-rich-oligodeoxynucleotide-rescues-mice-from-bacterial-septic-peritonitis-by-interfering-interferon-regulatory-factor-5
#15
Shuang Gao, Xin Li, Shu Nie, Lei Yang, Liqun Tu, Boqi Dong, Peiyan Zhao, Yangyang Wang, Yongli Yu, Liying Wang, Shucheng Hua
A previous study found that an AAAG-rich Oligodeoxynucleotide (ODN), designated as MS19, could lessen the acute lung inflammatory injury (ALII) in mice infected by influenza viruses. Bioinformatics analysis found that MS19 is consensus with the binding site of interferon regulatory factor 5 (IRF5) in the regulatory elements of pro-inflammatory genes. This study established a septic peritonitis model in Institute of Cancer Research (ICR) mice infected with Escherichia coli (E. coli), and found that MS19 prolonged the survival of the mice and down-regulated the expression of inducible nitric oxide synthase (iNOS), interleukin-6 (IL-6), and tumor necrosis factor α (TNF-α)...
May 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28486191/nlrp4-is-an-essential-negative-regulator-of-fructose-induced-cardiac-injury-in-vitro-and-in-vivo
#16
Yong-Gang Lian, Hai-Ying Zhao, Sheng-Ji Wang, Qin-Liang Xu, Xiang-Jun Xia
High fructose consumption leads to metabolic syndrome and enhances cardiovascular disease risk. However, our knowledge of the molecular mechanism underlying the cardiac disease caused by fructose feeding is still poor. Nod-like receptors (NLRs) are intracellular sensors, responding to a variety of intracellular danger signals to induce injuries. NLRP4 is a negative regulator of nuclear factor-κB (NF-κB) signaling pathway through interactions with kinase IκB kinase (IKK). Here, we illustrated that NLRP4 attenuates pro-inflammatory cytokines releasing, including Transforming growth factor (TGF-β1), Tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-18 (IL-18) and interleukin-6 (IL-6), in fructose-treated cardiac cells by means of RT-qPCR, and western blotting analysis...
May 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28484274/monocytic-microrna-profile-associated-with-coronary-collateral-artery-function-in-chronic-total-occlusion-patients
#17
Nazanin Hakimzadeh, Joëlle Elias, Gilbert W M Wijntjens, Ruud Theunissen, Angela van Weert, Martijn W Smulders, Nynke van den Akker, Perry D Moerland, Hein J Verberne, Loes P Hoebers, Jose P S Henriques, Anja M van der Laan, Mustafa Ilhan, Mark Post, Sebastiaan C A M Bekkers, Jan J Piek
An expansive collateral artery network is correlated with improved survival in case of adverse cardiac episodes. We aimed to identify cellular microRNAs (miRNA; miR) important for collateral artery growth. Chronic total occlusion (CTO) patients (n = 26) were dichotomized using pressure-derived collateral flow index (CFIp) measurements; high collateral capacity (CFIp > 0.39; n = 14) and low collateral (CFIp < 0.39; n = 12) capacity. MiRNA profiling via next generation sequencing from various monocyte phenotypes (freshly isolated monocytes, monocytes cultured without stimulant, or stimulation with lipopolysaccharide, interleukin 4, transforming growth factor beta-1, or interferon gamma) revealed significantly different miRNA expression patterns between high versus low collateral capacity patients...
May 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28481036/generation-and-characterization-of-a-conditional-allele-of-interferon-regulatory-factor-6
#18
Arianna L Smith, Youssef A Kousa, Akira Kinoshita, Kate Fodor, Baoli Yang, Brian C Schutte
Interferon Regulatory Factor 6 (IRF6) is a critical regulator of differentiation, proliferation and migration of keratinocytes. Mutations in IRF6 cause two autosomal dominant disorders characterized by cleft lip with or without cleft palate. In addition, DNA variation in IRF6 confers significant risk for non-syndromic cleft lip and palate. IRF6 is also implicated in adult onset development and disease processes, including mammary gland development and squamous cell carcinoma. Mice homozygous for a null allele of Irf6 die shortly after birth due to severe skin, limb, and craniofacial defects, thus impeding the study of gene function after birth...
May 8, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28478865/synthesis-and-biological-activity-of-new-phthalimides-as-potential-anti-inflammatory-agents
#19
Duc-Hiep Bach, Jian-Yu Liu, Won Kyung Kim, Ji-Young Hong, So Hyun Park, Donghwa Kim, Si-Ning Qin, Thi-Thu-Trang Luu, Hyen Joo Park, Yong-Nan Xu, Sang Kook Lee
The overproduction of nitric oxide (NO) plays an important role in a variety of pathophysiological processes, including inflammation. Therefore, the suppression of NO production is a promising target in the design of anti-inflammatory agents. In the present study, a series of phthalimide analogs was synthesized, and their anti-inflammatory activities were evaluated using lipopolysaccharide (LPS)-stimulated NO production in cultured murine macrophage RAW264.7 cells. A structure-activity relationship study showed that the free hydroxyl group at C-4 and C-6 and the bulkiness of the N-substituted alkyl chain are associated with biological activity...
April 25, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28472775/ocular-behcet-s-disease-is-associated-with-aberrant-methylation-of-interferon-regulatory-factor-8-irf8-in-monocyte-derived-dendritic-cells
#20
Yiguo Qiu, Yunyun Zhu, Hongsong Yu, Shenglan Yi, Wencheng Su, Qingfeng Cao, Gangxiang Yuan, Aize Kijlstra, Peizeng Yang
Aberrant methylation of interferon regulatory factor 8 (IRF8) has been noted in various tumors. IRF8 has also been reported to be involved in many autoimmune diseases, including Behcet's disease (BD). However, the methylation status of IRF8 in BD has not been reported. To address this issue, we investigated whether the degree of methylation of IRF8 in dendritic cells (DCs) plays a role in the development of BD. We found a lower mRNA expression and a higher methylation level of IRF8 in active ocular BD patients as compared to normal subjects and inactive patients...
April 19, 2017: Oncotarget
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