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https://www.readbyqxmd.com/read/28340426/porcine-parvovirus-induces-activation-of-nf-%C3%AE%C2%BAb-signaling-pathways-in-pk-15-cells-mediated-by-toll-like-receptors
#1
Liyan Cao, Jianfei Chen, Yanwu Wei, Hongyan Shi, Xin Zhang, Jing Yuan, Da Shi, Jianbo Liu, Xiangdong Zhu, Xin Wang, Shangjin Cui, Li Feng
Porcine parvovirus (PPV) is a pathogenic factor that primarily induces severe reproductive failure of pregnant swine, which results in extensive losses to the swine industry worldwide. In this study, a potential mechanism of PPV-induced activation of the nuclear transcription factor-kappaB (NF-κB) by infection in porcine kidney cells (PK-15) was elucidated for the first time. The subcellular localization of p65 analyzed by immunofluorescence assay (IFA) showed that PPV infection induced p65 translocation from the cytoplasm to the nucleus...
March 21, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28340094/nlrp2-is-a-suppressor-of-nf-%C3%A6-b-signaling-and-hla-c-expression-in-human-trophoblasts
#2
Tamara Tilburgs, Torsten B Meissner, Leonardo M R Ferreira, Arend Mulder, Kiran Musunuru, Junqiang Ye, Jack L Strominger
During human pregnancy, fetal extravillous trophoblasts (EVT) play a key role in the regulation of maternal T cell and NK cell responses. EVT display a unique combination of Human Leukocyte Antigens (HLA); EVT do not express HLA-A and HLA-B, but do express HLA-C, HLA-E and HLA-G. The mechanisms establishing this unique HLA expression pattern have not been fully elucidated. The MHC class I and class II transcriptional activators NLRC5 and CIITA are expressed neither by EVT nor by the EVT model cell line JEG3, which has an MHC expression pattern identical to that of EVT...
March 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339078/comparative-evaluation-of-the-effects-of-platelet%C3%A2-rich-plasma-formulations-on-extracellular-matrix-formation-and-the-nf%C3%A2-%C3%AE%C2%BAb-signaling-pathway-in-human-articular-chondrocytes
#3
Wenjing Yin, Haitao Xu, Jiagen Sheng, Zhengliang Xu, Xuetao Xie, Changqing Zhang
Concentrated leukocytes in leukocyte and platelet‑rich plasma (L‑PRP) may deliver increased levels of pro‑inflammatory cytokines to activate the nuclear factor (NF)‑κB signaling pathway, to counter or overwhelm the beneficial effects of growth factors on cartilage regeneration. However, to date, no relevant studies have substantiated this. In the present study, L‑PRP and pure platelet‑rich plasma (P‑PRP) were prepared, and leukocytes, platelets, pro‑inflammatory cytokines and growth factor concentrations were quantified; they were then used to treat human articular chondrocytes (HACs)...
March 23, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338974/recombinant-cc16-protein-inhibits-the-production-of-pro-inflammatory-cytokines-via-nf-%C3%AE%C2%BAb-and-p38-mapk-pathways-in-lps-activated-raw264-7-macrophages
#4
Min Pang, Yangyang Yuan, Dong Wang, Ting Li, Dan Wang, Xiaohong Shi, Min Guo, Chunfang Wang, Xinri Zhang, Guoping Zheng, Baofeng Yu, Hailong Wang
Accumulating evidence indicates that Clara cell protein-16 (CC16) has anti-inflammatory functions, although the involved molecular pathways have not been completely elucidated. Here, we evaluated the effect of recombinant rat CC16 (rCC16) on the expression of tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), and IL-8 in lipopolysaccharide (LPS)-stimulated mouse macrophages (RAW264.7 cells) and explored the underlying molecular mechanisms. It was found that rCC16 inhibited LPS-induced TNF-α, IL-6, and IL-8 expression at both the messenger ribonucleicacid (mRNA) level and protein level in a concentration-dependent manner, as demonstrated by real-time reverse transcriptase-polymerase chain reaction and enzyme-linked immunosorbent assay...
March 17, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28338190/the-role-of-mir-146a-in-modulating-traf6-induced-inflammation-during-lupus-nephritis
#5
C-Z Zheng, Y-B Shu, Y-L Luo, J Luo
OBJECTIVE: Lupus nephritis (LN) is a major complication of systemic lupus erythematosus (SLE). A previous study showed decreased expression level of microRNA (miR)-146a in LN patients, indicating its possible role in LN pathogenesis. PATIENTS AND METHODS: A total of 98 LN patients were recruited, for the collection of renal tissue samples during biopsy or surgery. Another cohort of 15 patients who had renal tumor resection was recruited as the control group, for the further comparison of expression levels of miR-146a, TRAF6 and p-p65 in tissues...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28337262/osteopontin-stimulates-matrix-metalloproteinase-expression-through-the-nuclear-factor-%C3%AE%C2%BAb-signaling-pathway-in-rat-temporomandibular-joint-and-condylar-chondrocytes
#6
Feng Ding, Jing Wang, Guoxiong Zhu, Huaqiang Zhao, Gaoyi Wu, Lei Chen
BACKGROUND: To examine the possible regulatory mechanisms of osteopontin (OPN) and the nuclear factor-κB (NF-κB) signaling pathway in the temporomandibular joint (TMJ) of rats subjected to chronic sleep deprivation (CSD). METHODS: Rats were subjected to CSD using the modified multiple platform method. The histomorphology of the TMJ was observed by hematoxylin-eosin staining. OPN and NF-κB/p65 expression were detected by immunohistochemical and immunofluorescence staining together with western blotting...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28334808/downregulation-of-pathways-implicated-in-liver-inflammation-and-tumorigenesis-of-glycogen-storage-disease-type-ia-mice-receiving-gene-therapy
#7
Goo-Young Kim, Joon Hyun Kwon, Jun-Ho Cho, Lisa Zhang, Brian C Mansfield, Janice Y Chou
Glycogen storage disease type Ia (GSD-Ia) is characterized by impaired glucose homeostasis and long-term risks of hepatocellular adenoma (HCA) and carcinoma (HCC). We have shown that the non-tumor-bearing (NT), recombinant adeno-associated virus (rAAV) vector-treated GSD-Ia mice (AAV-NT mice) expressing a wide range (0.9-63%) of normal hepatic glucose-6-phosphatase-α activity maintain glucose homeostasis and display physiologic features mimicking animals living under calorie restriction (CR). We now show that in AAV-NT mice, the signaling pathways of the CR mediators, AMP-activated protein kinase (AMPK) and sirtuin-1 are activated...
March 13, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334776/structural-characterization-of-interactions-between-transactivation-domain-1-of-the-p65-subunit-of-nf-%C3%AE%C2%BAb-and-transcription-regulatory-factors
#8
Lauriane Lecoq, Luca Raiola, Philippe R Chabot, Normand Cyr, Geneviève Arseneault, Pascale Legault, James G Omichinski
p65 is a member of the NF-κB family of transcriptional regulatory proteins that functions as the activating component of the p65-p50 heterodimer. Through its acidic transactivation domain (TAD), p65 has the capacity to form interactions with several different transcriptional regulatory proteins, including TFIIB, TFIIH, CREB-binding protein (CBP)/p300 and TAFII31. Like other acidic TADs, the p65 TAD contains two subdomains (p65TA1 and p65TA2) that interact with different regulatory factors depending on the target gene...
February 28, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28334721/microrna-9-inhibits-nlrp3-inflammasome-activation-in-human-atherosclerosis-inflammation-cell-models-through-the-jak1-stat-signaling-pathway
#9
Yue Wang, Zhihua Han, Yuqi Fan, Junfeng Zhang, Kan Chen, Lin Gao, Huasu Zeng, Jiatian Cao, Changqian Wang
BACKGROUND/AIMS: MicroRNA-9 (miR-9) is involved in inflammatory reaction in atherosclerosis; however, its function and regulatory mechanisms remain unclear. We aimed to uncover the exact roles of miR-9 and downstream signaling pathways using in vitro human atherosclerosis models. METHODS: We used oxidized low-density lipoprotein (oxLDL)-stimulated human THP-1 derived macrophages, oxLDL-stimulated human primary peripheral blood monocytes and lipopolysaccharides (LPS) or Alum-stimulated human THP-1 derived macrophages as in vitro atherosclerosis inflammation models...
March 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28317833/regulation-of-nf-%C3%AE%C2%BAb-by-pml-and-pml-rar%C3%AE
#10
Abrar Ahmed, Xiaochun Wan, Izaskun Mitxitorena, Andrew J Lindsay, Pier Paolo Pandolfi, Mary W McCaffrey, Karen Keeshan, Youhai H Chen, Ruaidhrí J Carmody
Promyelocytic Leukemia (PML) is a nuclear protein that forms sub-nuclear structures termed nuclear bodies associated with transcriptionally active genomic regions. PML is a tumour suppressor and regulator of cell differentiation. We demonstrate that PML promotes TNFα-induced transcriptional responses by promoting NF-κB activity. TNFα-treated PML(-/-) cells show normal IκBα degradation and NF-κB nuclear translocation but significantly reduced NF-κB DNA binding and phosphorylation of NF-κB p65. We also demonstrate that the PML retinoic acid receptor-α (PML-RARα) oncofusion protein, which causes acute promyelocytic leukemia, inhibits TNFα induced gene expression and phosphorylation of NF-κB...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28316375/torilin-inhibits-inflammation-by-limiting-tak1-mediated-map-kinase-and-nf-%C3%AE%C2%BAb-activation
#11
Mehari Endale, Tae-Hwan Kim, Yi-Seong Kwak, Na-Mi Kim, Seung-Hyung Kim, Jae Youl Cho, Bong-Sik Yun, Man-Hee Rhee
Torilin, a sesquiterpene isolated from the fruits of Torilis japonica, has shown antimicrobial, anticancer, and anti-inflammatory properties. However, data on the mechanism of torilin action against inflammation is limited. This study aimed at determining the anti-inflammatory property of torilin in LPS-induced inflammation using in vitro model of inflammation. We examined torilin's effect on expression levels of inflammatory mediators and cytokines in LPS-stimulated RAW 264.7 macrophages. The involvement of NF-kB and AP-1, MAP kinases, and adaptor proteins were assessed...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28315446/targeted-delivery-of-morin-a-dietary-bioflavanol-encapsulated-mannosylated-liposomes-to-the-macrophages-of-adjuvant-induced-arthritis-rats-inhibits-inflammatory-immune-response-and-osteoclastogenesis
#12
Farhath Sultana, Manoj Kumar Neog, MahaboobKhan Rasool
The purpose of the study was to develop a liposomal drug delivery system for morin, a dietary polyphenol, in order to target the synovial macrophages and investigate the remission of disease severity in the adjuvant-induced arthritic (AIA) rats. To do so, mannose decorated liposomal morin (ML-Morin) was prepared using the thin film hydration method and the physicochemical properties were characterized. The particle size and zeta potential of liposomal morin (L-Morin) was found to be 127.9nm ± 2.6 and -24.5mV ± 0...
March 14, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28302417/muc1-c-oncoprotein-integrates-a-program-of-emt-epigenetic-reprogramming-and-immune-evasion-in-human-carcinomas
#13
REVIEW
Hasan Rajabi, Donald Kufe
The MUC1 gene evolved in mammalian species to provide protection of epithelia. The transmembrane MUC1 C-terminal subunit (MUC1-C) signals stress to the interior of the epithelial cell and, when overexpressed as in most carcinomas, functions as an oncoprotein. MUC1-C induces the epithelial-mesenchymal transition (EMT) by activating the inflammatory NF-κB p65 pathway and, in turn, the EMT-transcriptional repressor ZEB1. Emerging evidence has indicated that MUC1-C drives a program integrating the induction of EMT with activation of stem cell traits, epigenetic reprogramming and immune evasion...
March 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28301595/mir-146a-regulates-glucose-induced-upregulation-of-inflammatory-cytokines-extracellular-matrix-proteins-in-the-retina-and-kidney-in-diabetes
#14
Shali Chen, Biao Feng, Anu Alice Thomas, Subrata Chakrabarti
Hyperglycemic damage to the endothelial cells (ECs) leads to increased synthesis of inflammatory cytokines. We have previously shown miR-146a downregulation in ECs and in the tissues of diabetic mice. Here we investigated the role of miR-146a, in the production of specific inflammatory cytokines and extracellular matrix (ECM) proteins in retina and kidneys in diabetes. We generated an endothelial specific miR-146a overexpressing transgenic mice (TG). We investigated these mice and wild type (WT) controls with or without streptozotocin (STZ) induced diabetes...
2017: PloS One
https://www.readbyqxmd.com/read/28298643/mkl1-defines-the-h3k4me3-landscape-for-nf-%C3%AE%C2%BAb-dependent-inflammatory-response
#15
Liming Yu, Fei Fang, Xin Dai, Huihui Xu, Xiaohong Qi, Mingming Fang, Yong Xu
Macrophage-dependent inflammatory response is considered a pivotal biological process that contributes to a host of diseases when aberrantly activated. The underlying epigenetic mechanism is not completely understood. We report here that MKL1 was both sufficient and necessary for p65-dependent pro-inflammatory transcriptional program in immortalized macrophages, in primary human and mouse macrophages, and in an animal model of systemic inflammation (endotoxic shock). Extensive chromatin immunoprecipitation (ChIP) profiling and ChIP-seq analyses revealed that MKL1 deficiency erased key histone modifications synonymous with transactivation on p65 target promoters...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28295920/importin-%C3%AE-1-targeting-by-hepatitis-c-virus-ns3-4a-protein-restricts-irf3-and-nf-%C3%AE%C2%BAb-signaling-of-ifnb1-antiviral-response
#16
Bridget Gagné, Nicolas Tremblay, Alex Y Park, Martin Baril, Daniel Lamarre
In this study, newly identified host interactors of hepatitis C virus (HCV) proteins were assessed for a role in modulating innate immune response. The analysis revealed enrichment for components of the nuclear transport machinery and the crucial interaction with NS3/4A protein in suppression of interferon-β (IFNB1) induction. Using a comprehensive microscopy-based high-content screening approach combined to the gene silencing of nuclear transport factors, we showed that NS3/4A-interacting proteins control the nucleocytoplasmic trafficking of IFN regulatory factor 3 (IRF3) and NF-κB p65 upon Sendai virus (SeV) infection...
March 13, 2017: Traffic
https://www.readbyqxmd.com/read/28295567/melatonin-reverses-h2-o2-induced-senescence-in-sh-sy5y-cells-by-enhancing-autophagy-via-sirtuin-1-deacetylation-of-the-rela-p65-subunit-of-nf-%C3%AE%C2%BAb
#17
Chutikorn Nopparat, Puritat Sinjanakhom, Piyarat Govitrapong
Autophagy, a degradation mechanism that plays a major role in maintaining cellular homeostasis and diminishes in aging, is considered an aging characteristic. Melatonin is an important hormone that plays a wide range of physiological functions, including the anti-aging effect, potentially via the regulation of the Sirtuin1 (SIRT1) pathway. The deacetylation ability of SIRT1 is important for controlling the function of several transcription factors, including nuclear factor kappa B (NF-ĸB). Apart from inflammation, NF-ĸB can regulate autophagy by inhibiting Beclin1, an initiator of autophagy...
March 14, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28292012/up-regulation-of-il-6-is-involved-in-di-2-ethylhexyl-phthalate-dehp-induced-migration-and-invasion-of-non-small-cell-lung-cancer-nsclc-cells
#18
Yingyi Wang, Ming Zhao, Jieying Liu, Jianjiao Ni, Yuchen Jiao, Chunmei Bai
Di (2-ethylhexyl) phthalate (DEHP), which is widely used in polyvinyl chloride materials, can be easily accumulated into human body. Lung cancer cells can be directly exposed to DEHP via inhalation, however, the effects and related mechanisms of DEHP on the progression of non small cell lung cancer (NSCLC) were not illustrated. Our present study revealed that DEHP less than 10(-4)M had no significant effect on the proliferation of A549 or H1299 cells, while nanomolar DEHP can trigger the migration and invasion of NSCLC cells...
March 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28288820/resveratrol-inhibits-bk-induced-cox-2-transcription-by-suppressing-acetylation-of-ap-1-and-nf-%C3%AE%C2%BAb-in-human-rheumatoid-arthritis-synovial-fibroblasts
#19
Chuen-Mao Yang, Yu-Wen Chen, Pei-Ling Chi, Chih-Chung Lin, Li-Der Hsiao
Bradykinin (BK) induces inflammation in rheumatoid arthritis (RA). Resveratrol is a potent activator of Sirt1 which could modulate inflammation through deacetylating histones of transcription factors. Here, we investigated the mechanisms underlying BK-induced COX-2 expression which is modulated by resveratrol/Sirt1 in human rheumatoid arthritis synovial fibroblasts (RASFs). We found that BK-induced COX-2 protein and mRNA expression associated with PGE2 synthesis, and promoter activity was mediated through B2R receptors, which were attenuated by selective B2R antagonist Hoe140 or transfection with B2R siRNA...
March 11, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28288138/muc1-c-integrates-pd-l1-induction-with-repression-of-immune-effectors-in-non-small-cell-lung-cancer
#20
A Bouillez, H Rajabi, C Jin, M Samur, A Tagde, M Alam, M Hiraki, T Maeda, X Hu, D Adeegbe, S Kharbanda, K-K Wong, D Kufe
Immunotherapeutic approaches, particularly programmed death 1/programmed death ligand 1 (PD-1/PD-L1) blockade, have improved the treatment of non-small-cell lung cancer (NSCLC), supporting the premise that evasion of immune destruction is of importance for NSCLC progression. However, the signals responsible for upregulation of PD-L1 in NSCLC cells and whether they are integrated with the regulation of other immune-related genes are not known. Mucin 1 (MUC1) is aberrantly overexpressed in NSCLC, activates the nuclear factor-κB (NF-κB) p65ZEB1 pathway and confers a poor prognosis...
March 13, 2017: Oncogene
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