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TRAF3

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https://www.readbyqxmd.com/read/28522807/traf3-enhances-tcr-signaling-by-regulating-the-inhibitors-csk-and-ptpn22
#1
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
#2
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
#3
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
#4
Zhenqiang Yao, Wei Lei, Rong Duan, Yanyun Li, Lu Luo, Brendan F Boyce
Cytokines, including receptor activator of nuclear factor kappa B 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...
April 24, 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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
https://www.readbyqxmd.com/read/28098136/exome-and-genome-sequencing-of-nasopharynx-cancer-identifies-nf-%C3%AE%C2%BAb-pathway-activating-mutations
#17
Yvonne Y Li, Grace T Y Chung, Vivian W Y Lui, Ka-Fai To, Brigette B Y Ma, Chit Chow, John K S Woo, Kevin Y Yip, Jeongsun Seo, Edwin P Hui, Michael K F Mak, Maria Rusan, Nicole G Chau, Yvonne Y Y Or, Marcus H N Law, Peggy P Y Law, Zoey W Y Liu, Hoi-Lam Ngan, Pok-Man Hau, Krista R Verhoeft, Peony H Y Poon, Seong-Keun Yoo, Jong-Yeon Shin, Sau-Dan Lee, Samantha W M Lun, Lin Jia, Anthony W H Chan, Jason Y K Chan, Paul B S Lai, Choi-Yi Fung, Suet-Ting Hung, Lin Wang, Ann Margaret V Chang, Simion I Chiosea, Matthew L Hedberg, Sai-Wah Tsao, Andrew C van Hasselt, Anthony T C Chan, Jennifer R Grandis, Peter S Hammerman, Kwok-Wai Lo
Nasopharyngeal carcinoma (NPC) is an aggressive head and neck cancer characterized by Epstein-Barr virus (EBV) infection and dense lymphocyte infiltration. The scarcity of NPC genomic data hinders the understanding of NPC biology, disease progression and rational therapy design. Here we performed whole-exome sequencing (WES) on 111 micro-dissected EBV-positive NPCs, with 15 cases subjected to further whole-genome sequencing (WGS), to determine its mutational landscape. We identified enrichment for genomic aberrations of multiple negative regulators of the NF-κB pathway, including CYLD, TRAF3, NFKBIA and NLRC5, in a total of 41% of cases...
January 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28071724/osteoclastic-mir-214-targets-traf3-to-contribute-to-osteolytic-bone-metastasis-of-breast-cancer
#18
Jin Liu, Defang Li, Lei Dang, Chao Liang, Baosheng Guo, Cheng Lu, Xiaojuan He, Hilda Y S Cheung, Bing He, Biao Liu, Fangfei Li, Jun Lu, Luyao Wang, Atik Badshah Shaikh, Feng Jiang, Changwei Lu, Songlin Peng, Zongkang Zhang, Bao-Ting Zhang, Xiaohua Pan, Lianbo Xiao, Aiping Lu, Ge Zhang
The role of osteoclastic miRNAs in regulating osteolytic bone metastasis (OBM) of breast cancer is still underexplored. Here, we examined the expression profiles of osteoclastogenic miRNAs in human bone specimens and identified that miR-214-3p was significantly upregulated in breast cancer patients with OBM. Consistently, we found increased miR-214-3p within osteoclasts, which was associated with the elevated bone resorption, during the development of OBM in human breast cancer xenografted nude mice (BCX). Furthermore, genetic ablation of osteoclastic miR-214-3p in nude mice prevent the development of OBM...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28053087/targeting-traf3ip2-by-genetic-and-interventional-approaches-inhibits-ischemia-reperfusion-induced-myocardial-injury-and-adverse-remodeling
#19
John M Erikson, Anthony J Valente, Srinivas Mummidi, Hemanth Kumar Kandikattu, Vincent G DeMarco, Shawn B Bender, William P Fay, Ulrich Siebenlist, Bysani Chandrasekar
Re-establishing blood supply is the primary goal for reducing myocardial injury in subjects with ischemic heart disease. Paradoxically, reperfusion results in nitroxidative stress and a marked inflammatory response in the heart. TRAF3IP2 (TRAF3 Interacting Protein 2; previously known as CIKS or Act1) is an oxidative stress-responsive cytoplasmic adapter molecule that is an upstream regulator of both IκB kinase (IKK) and c-Jun N-terminal kinase (JNK), and an important mediator of autoimmune and inflammatory responses...
February 10, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28049150/fosl1-inhibits-type-i-interferon-responses-to-malaria-and-viral-infections-by-blocking-tbk1-and-traf3-trif-interactions
#20
Baowei Cai, Jian Wu, Xiao Yu, Xin-Zhuan Su, Rong-Fu Wang
Innate immune response plays a critical role in controlling invading pathogens, but such an immune response must be tightly regulated. Insufficient or overactivated immune responses may lead to harmful or even fatal consequences. To dissect the complex host-parasite interactions and the molecular mechanisms underlying innate immune responses to infections, here we investigate the role of FOS-like antigen 1 (FOSL1) in regulating the host type I interferon (IFN-I) response to malaria parasite and viral infections...
January 3, 2017: MBio
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