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https://www.readbyqxmd.com/read/28717359/the-c-terminal-effector-domain-of-non-structural-protein-1-of-influenza-a-virus-blocks-ifn-%C3%AE-production-by-targeting-tnf-receptor-associated-factor-3
#1
Wei Qian, Xiaoqin Wei, Kelei Guo, Yongtao Li, Xian Lin, Zhong Zou, Hongbo Zhou, Meilin Jin
Influenza A virus non-structural protein 1 (NS1) antagonizes interferon response through diverse strategies, particularly by inhibiting the activation of interferon regulatory factor 3 (IRF3) and IFN-β transcription. However, the underlying mechanisms used by the NS1 C-terminal effector domain (ED) to inhibit the activation of IFN-β pathway are not well understood. In this study, we used influenza virus subtype of H5N1 to demonstrate that the NS1 C-terminal ED but not the N-terminal RNA-binding domain, binds TNF receptor-associated factor 3 (TRAF3)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28682481/significant-association-between-tnfaip3-inactivation-and-biased-ighv4-34-usage-in-malt-lymphoma
#2
Sarah Moody, Leire Escudero-Ibarz, Ming Wang, Alexandra Clipson, Eguzkine Ochoa Ruiz, Deborah Dunn-Walters, Xuemin Xue, Naiyan Zeng, Alistair Robson, Shih-Sung Chuang, Sergio Cogliatti, Hongxiang Liu, John Goodlad, Margaret Ashton-Key, Markus Raderer, Yingwen Bi, Ming-Qing Du
Both antigenic drive and genetic change play a critical role in the development of mucosa-associated lymphoid tissue (MALT) lymphoma [EdQ please check change], but neither alone is sufficient for malignant transformation, and lymphoma development critically depends on their cooperation. However, which of these different events concur and how they cooperate in MALT lymphomagenesis is totally unknown. To explore this, we investigated somatic mutations of 17 genes and immunoglobulin heavy chain variable region (IGHV) [EdQ please check change]usage in 179 MALT lymphomas from various sites...
July 6, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28627449/microrna-214-regulates-immunity-related-genes-in-bovine-mammary-epithelial-cells-by-targeting-nfatc3-and-traf3
#3
Ning Song, Xingping Wang, Linsheng Gui, Sayed Haidar Abbas Raza, Zhuoma Luoreng, Linsen Zan
In human, microRNA-214 (miR-214) plays crucial roles in mechanisms of immunity. However, the potential importance of miR-214 in immune mechanisms in dairy cows has not been investigated. In this study, we assessed potential immunity-related functions of miR-214 in human 293A cells and in bovine mammary epithelial cells (BMECs). We found that NFATc3 and TRAF3 could be targeted by miR-214 in both 293A cells and BMECs. We also found that miR-214 indirectly inhibited the expression of MAP3K14, TBK1 and inflammatory cytokines IL-6 and IL-1β...
June 13, 2017: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/28559278/the-p90-ribosomal-s6-kinase-ubr5-pathway-controls-toll-like-receptor-signaling-via-mirna-induced-translational-inhibition-of-tnf-receptor-associated-factor-3
#4
Jin Hwa Cho, Sung Ah Kim, Yeon-Soo Seo, Sung Goo Park, Byoung Chul Park, Jeong-Hoon Kim, Sunhong Kim
MicroRNAs (miRNAs) are small, noncoding RNAs that post-transcriptionally regulate gene expression. For example, miRNAs repress gene expression by recruiting the miRNA-induced silencing complex (miRISC), a ribonucleoprotein complex that contains miRNA-engaged Argonaute (Ago) and the scaffold protein GW182. Recently, ubiquitin protein ligase E3 component N-recognin 5 (UBR5) has been identified as a component of miRISC. UBR5 directly interacts with GW182 proteins and participates in miRNA silencing by recruiting downstream effectors, such as the translation regulator DEAD-box helicase 6 (DDX6) and transducer of ERBB2...
May 30, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28522807/traf3-enhances-tcr-signaling-by-regulating-the-inhibitors-csk-and-ptpn22
#5
Alicia M Wallis, Ellie C Wallace, Bruce S Hostager, Zuoan Yi, Jon C D Houtman, Gail A Bishop
The adaptor protein TNF receptor associated factor (TRAF) 3 is required for effective TCR signaling and normal T cell effector functions, and associates with the CD3/CD28 complex upon activation. To determine how TRAF3 promotes proximal TCR signaling, we studied TRAF3-deficient mouse and human T cells, which showed a marked reduction in activating phosphorylation of the TCR-associated kinase Lck. The impact of TRAF3 on this very early signaling event led to the hypothesis that TRAF3 restrains one or both of two known inhibitors of Lck, C-terminal Src kinase (Csk) and protein tyrosine phosphatase N22 (PTPN22)...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28499194/quercetin-ameliorates-imiquimod-induced-psoriasis-like-skin-inflammation-in-mice-via-the-nf-%C3%AE%C2%BAb-pathway
#6
Haiming Chen, Chuanjian Lu, Huazhen Liu, Maojie Wang, Hui Zhao, Yuhong Yan, Ling Han
Quercetin (QC) is a dietary flavonoid abundant in many natural plants. A series of studies have shown that it has been shown to exhibit several biological properties, including anti-inflammatory, anti-oxidant, cardio-protective, vasodilatory, liver-protective and anti-cancer activities. However, so far the possible therapeutic effect of QC on psoriasis has not been reported. The present study was undertaken to evaluate the potential beneficial effect of QC in psoriasis using a generated imiquimod (IMQ)-induced psoriasis-like mouse model, and to further elucidate its underlying mechanisms of action...
May 9, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28479387/the-effects-of-tlr3-trif-and-traf3-snps-and-interactions-with-environmental-factors-on-type-2-diabetes-mellitus-and-vascular-complications-in-a-han-chinese-population
#7
Zixing Zhou, Chengli Zeng, Lihong Nie, Shiqi Huang, Congcong Guo, Di Xiao, Yajing Han, Xiaohong Ye, Meiling Ou, Chuican Huang, Xingguang Ye, Zihao Wen, Guang Yang, Chunxia Jing
Toll-like receptor 3 (TLR3) is involved in type I interferon-β (IFN-β) via TIR-domain-containing adapter-inducing interferon-β (TRIF) and Tumor necrosis factor receptor-associated factor 3 (TRAF3), culminating in inflammation and immunity reactions. TLR3 is implicated in insulin resistance and type 2 diabetes mellitus (T2DM). Eight SNPs of these genes were detected in 552 T2DM patients and 552 matched healthy control subjects. Gene-gene and gene-environment interactions and haplotype associations were also evaluated...
May 4, 2017: Gene
https://www.readbyqxmd.com/read/28438834/rankl-cytokine-enhances-tnf-induced-osteoclastogenesis-independently-of-tnf-receptor-associated-factor-traf-6-by-degrading-traf3-in-osteoclast-precursors
#8
Zhenqiang Yao, Wei Lei, Rong Duan, Yanyun Li, Lu Luo, Brendan F Boyce
Cytokines, including receptor activator of nuclear factor κB ligand (RANKL) and TNF, induce increased osteoclast (OC) formation and bone loss in postmenopausal osteoporosis and inflammatory arthritides. RANKL and TNF can independently induce OC formation in vitro from WT OC precursors via TNF receptor-associated factor (TRAF) adaptor proteins, which bind to their receptors. Of these, only TRAF6 is required for RANKL-induced osteoclastogenesis in vitro However, the molecular mechanisms involved remain incompletely understood...
June 16, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28418082/non-digestible-carbohydrates-supplementation-increases-mir-32-expression-in-the-healthy-human-colorectal-epithelium-a-randomized-controlled-trial
#9
Fiona C Malcomson, Naomi D Willis, Iain McCallum, Long Xie, Bart Lagerwaard, Seamus Kelly, D Michael Bradburn, Nigel J Belshaw, Ian T Johnson, John C Mathers
Colorectal cancer (CRC) risk is modulated by diet and there is convincing evidence of reduced risk with higher non-digestible carbohydrates (NDCs) consumption. Resistant starch (RS), a NDC, positively modulates the expression of oncogenic microRNAs, suggesting that this could be a mechanism through which NDCs protect against CRC. The present study aimed to investigate the effects of supplementation with two NDCs, RS, and polydextrose (PD), on microRNA expression in the macroscopically-normal human rectal epithelium using samples from the DISC Study, a randomized, double-blind, placebo-controlled dietary intervention...
April 18, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28391724/usp19-suppresses-cellular-type-i-interferon-signaling-by-targeting-traf3-for-deubiquitination
#10
Zhiwen Gu, Weifeng Shi, Li Zhang, Zhilin Hu, Chao Xu
AIM: To investigate host factors that mediate the immune escape of enterovirus 71 (EV71) in the context of deubiquitinating enzymes. MATERIALS & METHODS: Utilize PCR array to screen candidate genes that may be involved in EV71-induced cellular antiviral immune responses, and utilize protein mass spectrometry analysis to identify the functional targets of the candidate regulator. RESULTS: EV71 infection induces the upregulation of ubiquitin-specific protease 19 (USP19) gene expression, which negatively regulates cellular antiviral type I interferon signaling...
April 10, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28377715/protective-effects-of-dioscin-against-lipopolysaccharide-induced-acute-lung-injury-through-inhibition-of-oxidative-stress-and-inflammation
#11
Hong Yao, Yiping Sun, Shasha Song, Yan Qi, Xufeng Tao, Lina Xu, Lianhong Yin, Xu Han, Youwei Xu, Hua Li, Huijun Sun, Jinyong Peng
The protective effects of dioscin, a natural steroidal saponin from some medicinal plants including Dioscorea nipponica Makino, against lipopolysaccharide (LPS)- induced acute liver and renal damages have been reported in our previous works. However, the actions of dioscin against LPS-induced acute lung injury (ALI) is still unknown. In the present study, we investigated the effects and mechanisms of dioscin against LPS-induced ALI in vitro and in vivo. The results showed that dioscin obviously inhibited cell proliferation and markedly decreased reactive oxidative species level in 16HBE cells treated by LPS...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28295222/traf3-cyld-mutations-identify-a-distinct-subset-of-human-papillomavirus-associated-head-and-neck-squamous-cell-carcinoma
#12
Michael Hajek, Andrew Sewell, Susan Kaech, Barbara Burtness, Wendell G Yarbrough, Natalia Issaeva
BACKGROUND: The incidence of human papillomavirus (HPV)-associated (HPV-positive) head and neck squamous cell carcinoma (HNSCC) of the oropharynx has dramatically increased over the last decade and continues to rise. Newly diagnosed HPV-positive HNSCCs in the United States currently outnumber any other HPV-associated cancers, including cervical cancer. Despite introduction of the HPV vaccine, the epidemic of HPV-positive HNSCC is expected to continue for approximately 60 years. Compared with patients who have tobacco-associated HNSCC, those who have HPV-positive HNSCC have better overall survival and response to treatment...
May 15, 2017: Cancer
https://www.readbyqxmd.com/read/28295216/genetic-alterations-in-traf3-and-cyld-that-regulate-nuclear-factor-%C3%AE%C2%BAb-and-interferon-signaling-define-head-and-neck-cancer-subsets-harboring-human-papillomavirus
#13
Tony Chen, Jialing Zhang, Zhong Chen, Carter Van Waes
No abstract text is available yet for this article.
May 15, 2017: Cancer
https://www.readbyqxmd.com/read/28286228/the-smac-mimetic-birinapant-attenuates-lipopolysaccharide-induced-liver-injury-by-inhibiting-the-tumor-necrosis-factor-receptor-associated-factor-3-degradation-in-kupffer-cells
#14
Hongxiang Liu, Rui Liao, Kun He, Xiwen Zhu, Peizhi Li, Jianping Gong
It was demonstrated that second mitochondria-derived activator of caspases (SMAC) mimetic inhibites tumor necrosis factor receptor-associated factor 3 (TRAF3) degradation and the mitogen-activated protein kinase (MAPK) signaling pathway activation induced by lipopolysaccharide (LPS) in vitro. However, the effect of Smac mimetic in vivo is not clear. The present study was to investigate the role of Smac mimetic in LPS-induced liver injury in mice and its possible mechanism. An animal model of LPS-induced liver injury was established by intraperitoneally injecting mice with 10mg/kg LPS pretreatment with or without Smac mimetic birinapant (30mg/kg body weight)...
March 9, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28234347/bi-allelic-inactivation-is-more-prevalent-at-relapse-in-multiple-myeloma-identifying-rb1-as-an-independent-prognostic-marker
#15
S S Chavan, J He, R Tytarenko, S Deshpande, P Patel, M Bailey, C K Stein, O Stephens, N Weinhold, N Petty, D Steward, L Rasche, M Bauer, C Ashby, E Peterson, S Ali, J Ross, V A Miller, P Stephens, S Thanendrarajan, C Schinke, M Zangari, F van Rhee, B Barlogie, T I Mughal, F E Davies, G J Morgan, B A Walker
The purpose of this study is to identify prognostic markers and treatment targets using a clinically certified sequencing panel in multiple myeloma. We performed targeted sequencing of 578 individuals with plasma cell neoplasms using the FoundationOne Heme panel and identified clinically relevant abnormalities and novel prognostic markers. Mutational burden was associated with maf and proliferation gene expression groups, and a high-mutational burden was associated with a poor prognosis. We identified homozygous deletions that were present in multiple myeloma within key genes, including CDKN2C, RB1, TRAF3, BIRC3 and TP53, and that bi-allelic inactivation was significantly enriched at relapse...
February 24, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28219902/ndr1-protein-kinase-promotes-il-17-and-tnf-%C3%AE-mediated-inflammation-by-competitively-binding-traf3
#16
Chunmei Ma, Wenlong Lin, Zhiyong Liu, Wei Tang, Rahul Gautam, Hui Li, Youcun Qian, He Huang, Xiaojian Wang
Interleukin 17 (IL-17) is an important inducer of tissue inflammation and is involved in numerous autoimmune diseases. However, how its signal transduction is regulated is not well understood. Here, we report that nuclear Dbf2-related kinase 1 (NDR1) functions as a positive regulator of IL-17 signal transduction and IL-17-induced inflammation. NDR1 deficiency or knockdown inhibits the IL-17-induced phosphorylation of p38, ERK1/2, and p65 and the expression of chemokines and cytokines, whereas the overexpression of NDR1 promotes IL-17-induced signaling independent of its kinase activity...
April 2017: EMBO Reports
https://www.readbyqxmd.com/read/28185403/traf3-delays-cyst-formation-induced-by-nf-%C3%AE%C2%BAb-signaling
#17
Liping Sun, Chaofeng Hu, Xinzhou Zhang
This study aims to investigate the effects of TNF receptors associated factor 3 (TRAF3) on the signaling pathway and expression of downstream products of nuclear factor kappa B (NF-κB) in the epithelial cells of renal ducts in individuals with polycystic kidney disease (PKD). We observe the TRAF3 genic overexpression of the epithelial cells, which form a tubular branch structure, in polycystic kidneys and to explore the protective effect of TRAF3 on the cystogenesis and progression of PKD. Western blotting analysis was conducted to examine the signaling changes of NF-κB in PKD the epithelial cells and TRAF3 transgenic PKD epithelial cells...
February 10, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28131045/inflammatory-gene-expression-in-whole-blood-cells-after-epa-vs-dha-supplementation-results-from-the-compared-study
#18
Cécile Vors, Janie Allaire, Johanne Marin, Marie-Claude Lépine, Amélie Charest, André Tchernof, Patrick Couture, Benoît Lamarche
BACKGROUND AND AIMS: Whether EPA and DHA exert similar anti-inflammatory effects through modulation of gene expression in immune cells remains unclear. The aim of the study was to compare the impact of EPA and DHA supplementation on inflammatory gene expression in subjects at risk for cardiometabolic diseases. METHODS: In this randomized double-blind crossover trial, 154 men and women with abdominal obesity and low-grade inflammation were subjected to three 10-wk supplementation phases: 1) EPA (2...
February 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28109007/retinoic-acid-inducible-gene-i-rig-i-like-receptors-rlrs-in-fish-current-knowledge-and-future-perspectives
#19
REVIEW
Shan Nan Chen, Peng Fei Zou, Pin Nie
Retinoic acid-inducible gene I (RIG-I) -like receptors (RLRs) are found conservatively present in teleost fish. All three members, RIG-I, MDA5 and LGP2, together with the downstream molecules such as MITA, TRAF3 and TBK1, have been identified in a range of fish species. However, it is unexpected that RIG-I has not been reported in fish of Acanthopterygii, and it would be important to clarify the presence and role of the RIG-I gene in a broad range of taxa in Teleostei. RLRs in fish can be induced in vivo and in vitro by viral pathogens as well as synthetic dsRNA, poly(I:C), leading to the production of type I interferons (IFNs) and the expression of IFN-stimulated genes (ISGs)...
May 2017: Immunology
https://www.readbyqxmd.com/read/28102839/foot-and-mouth-disease-virus-infection-suppresses-autophagy-and-nf-%C3%B0%C2%BAb-antiviral-responses-via-degradation-of-atg5-atg12-by-3c-pro
#20
Xuxu Fan, Shichong Han, Dan Yan, Yuan Gao, Yanquan Wei, Xiangtao Liu, Ying Liao, Huichen Guo, Shiqi Sun
Autophagy-related protein ATG5-ATG12 is an essential complex for the autophagophore elongation in autophagy, which has been reported to be involved in foot-and-mouth disease virus (FMDV) replication. Previous reports show that ATG5-ATG12 positively or negatively regulates type I interferon (IFN-α/β) pathway during virus infection. In this study, we found that FMDV infection rapidly induced LC3 lipidation and GFP-LC3 subcellular redistribution at the early infection stage in PK-15 cells. Along with infection time course to 2-5 h...
January 19, 2017: Cell Death & Disease
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