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https://www.readbyqxmd.com/read/28433552/roscovitine-attenuates-intimal-hyperplasia-via-inhibiting-nf-%C3%AE%C2%BAb-and-stat3-activation-induced-by-tnf-%C3%AE-in-vascular-smooth-muscle-cells
#1
Ming He, Chao Wang, Jia-Huan Sun, Yu Liu, Hong Wang, Jing-Shan Zhao, Yun-Feng Li, Hong Chang, Jian-Ming Hou, Jun-Na Song, Ai-Ying Li, En-Sheng Ji
Roscovitine is a selective CDK inhibitor originally designed as anti-cancer agent, which has also been shown to inhibit proliferation in vascular smooth muscle cells (VSMCs). However, its effect on vascular remodeling and its mechanism of action remain unknown. In our study, we created a new intimal hyperplasia model in male Sprague-Dawley rats by trypsin digestion method, which cause to vascular injury as well as the model of rat carotid balloon angioplasty. Roscovitine administration led to a significant reduction in neointimal formation and VSMCs proliferation after injury in rats...
April 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28431901/clozapine-reduces-toll-like-receptor-4-nf-%C3%AE%C2%BAb-mediated-inflammatory-responses-through-inhibition-of-calcium-calmodulin-dependent-akt-activation-in-microglia
#2
Seunghyun Jeon, Se Hyun Kim, Soon Young Shin, Young Han Lee
Clozapine is an atypical antipsychotic agent used in the treatment of schizophrenia and severe mood disorders. Accumulating evidence suggests that neuroinflammation is closely associated with the pathogenesis of various neurodegenerative diseases and psychiatric disorders. Clozapine exerts anti-inflammatory activity. However, the molecular mechanism underlying the anti-inflammatory activity of clozapine is poorly understood. In this study, we found that clozapine suppressed lipopolysaccharide (LPS)-induced phosphorylation of IκBα at Ser-32 and of p65/RelA at Ser-468, as well as nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB)-dependent transcriptional activity in microglial cells...
April 18, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28429995/new-insights-into-the-role-of-dietary-spermine-on-inflammation-immune-function-and-related-signalling-molecules-in-the-thymus-and-spleen-of-piglets
#3
Wei Cao, Xianjian Wu, Gang Jia, Hua Zhao, Xiaoling Chen, Caimei Wu, Jiayong Tang, Jing Wang, Jingyi Cai, Guangmang Liu
This study aimed to determine the effects of dietary spermine supplementation on the inflammatory response and immune function of the thymus and spleen in piglets. Eighty suckling piglets were randomly assigned to receive adequate nutrients supplemented with spermine (0.4 mmol/kg body weight) or restricted nutrient intake supplemented with normal saline for 7 h or 3, 6 and 9 days in pairs. Regardless of treatment time, spermine supplementation decreased (p < 0.05, compared with the controls) the following: (1) tumour necrosis factor α (TNF-α), interleukin (IL)-1β, 2 and 6, and interferon (IFN)-γ levels in serum; (2) gene expression of cluster of differentiation 8 and integrin beta-2 in the thymus and spleen and the lymphocyte function-associated antigen 1 in the thymus; (3) mRNA levels of TNF-α, IL 1β, 2, 6, and 12, IFN-γ and inducible nitric oxide synthase in the thymus and spleen, as well as IL-8 in the spleen; and (4) eukaryotic IF4E-binding protein 1, Janus kinase 2, signal transducer and activator of transcription 3, and nuclear factor-kappa B P65 gene transcriptions in the thymus and spleen...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28428751/identification-of-nf-%C3%AE%C2%BAb-as-determinant-of-posttraumatic-stress-disorder-and-its-inhibition-by-the-chinese-herbal-remedy-free-and-easy-wanderer
#4
Chunlan Hong, Anja Schüffler, Ulrich Kauhl, Jingming Cao, Ching-Fen Wu, Till Opatz, Eckhard Thines, Thomas Efferth
Posttraumatic stress disorder (PTSD) is a mental disorder developing after exposure to traumatic events. Although psychotherapy reveals some therapeutic effectiveness, clinically sustainable cure is still uncertain. Some Chinese herbal formulae are reported to work well clinically against mental diseases in Asian countries, but the safety and their mode of action are still unclear. In this study, we investigated the mechanisms of Chinese remedy free and easy wanderer (FAEW) on PTSD. We used a reverse pharmacology approach combining clinical data to search for mechanisms of PTSD with subsequent in vitro verification and bioinformatics techniques as follows: (1) by analyzing microarray-based transcriptome-wide mRNA expression profiling of PTSD patients; (2) by investigating the effect of FAEW and the antidepressant control drug fluoxetine on the transcription factor NF-κB using reporter cell assays and western blotting; (3) by performing molecular docking and literature data mining based on phytochemical constituents of FAEW...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28424948/14-3-3-isoforms-differentially-regulate-nf%C3%AE%C2%BAb-signaling-in-the-brain-after-ischemia-reperfusion
#5
Xin-Yu Zhou, Dian Xing Hu, Ruo Qiao Chen, Xiao Qian Chen, Wan-Li Dong, Cheng-la Yi
Mammalian 14-3-3 isoforms exist predominantly in the brain and are heavily involved in neurological diseases. However, the isoform-specific role of 14-3-3 proteins in the brain remains largely unclear. Here, we investigated the role of 14-3-3 isoforms in rat brains after transient middle cerebral artery occlusion and reperfusion. 14-3-3β, η, γ and ζ but not ε or τ were selectively upregulated in cerebral cortical neurons after ischemia-reperfusion (I/R). Selectively, 14-3-3β, γ and ζ were translocated from cytoplasm into the nuclei of neurons after I/R...
April 19, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28423737/rmp-promotes-epithelial-mesenchymal-transition-through-nf-%C3%AE%C2%BAb-csn2-snail-pathway-in-hepatocellular-carcinoma
#6
Wei Zhou, Qi Wang, Yi Xu, Jingting Jiang, Jingchun Guo, Huijun Yu, Wenxiang Wei
Epithelial-mesenchymal transition (EMT) is a significant risk factor for metastasis in hepatocellular carcinoma (HCC) patients and with poor prognosis. In this study, we demonstrate the key role of RPB5-mediating protein (RMP) in EMT of HCC cells and the mechanism by which RMP promote EMT. RMP increases migration, invasion, and the progress of EMT of HCC cells, which facilitates the accumulation of Snail, a transcriptional repressor involved in EMT initiation. NF-κB is activated by RMP, which directly promotes the expression of COP9 signalosome 2 (CSN2) to repress the degradation of Snail...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423685/tumor-fibroblast-interactions-stimulate-tumor-vascularization-by-enhancing-cytokine-driven-production-of-mmp9-by-tumor-cells
#7
Michelle Limoge, Alfiya Safina, Amy Beattie, Lauren Kapus, Alexander M Truskinovsky, Andrei V Bakin
Advance-stage breast carcinomas include significant amounts of fibroblasts and infiltrating immune cells which have been implicated in tumor growth, recurrence, and response to therapy. The present study investigated the contribution of fibroblasts to tumor growth using direct tumor-fibroblast co-cultures and tumor xenograft models. Our findings revealed that fibroblasts enhance breast carcinoma growth by promoting the tumor vasculature via the MMP9-dependent mechanism. In tumor-fibroblast co-cultures, fibroblasts increased expression of TGF-β, TNF, and IL-1β cytokines in tumor cells...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28416608/hyper-o-glcnacylation-activates-nf-%C3%AE%C2%BAb-signaling-through-interplay-with-phosphorylation-and-acetylation
#8
Zhiyuan Ma, Robert J Chalkley, Keith Vosseller
O-GlcNAcylation is the covalent addition of an O-linked β-N-acetylglucosamine (O-GlcNAc) sugar moiety to hydroxyl groups of serine/threonine residues of cytosolic and nuclear proteins. O-GlcNAcylation, analogous to phosphorylation, plays critical roles in gene expression through direct modification of transcription factors such as NF-κB. Aberrantly increased NF-κB O-GlcNAcylation has been linked to NF-κB constitutive activation and cancer development. Therefore, it is of a great biological and clinical significance to dissect the molecular mechanisms that tune NF-κB activity...
April 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28407405/fibrinogen-links-podocyte-injury-with-toll-like-receptor-4-and-is-associated-with-disease-activity-in-fsgs-patients
#9
Hongtian Wang, Chunxia Zheng, Xiaodong Xu, Yue Zhao, Yinghui Lu, Zhihong Liu
AIM: Fibrinogen (Fg) is reported to participate in inflammation through Toll-like receptor 4 (TLR4). However, it remains unknown whether Fg might induce podocyte damage through TLR4 and be related to disease activity in patients with focal segmental glomerulosclerosis (FSGS). METHODS: We observed Fg-induced alterations in actin and apoptosis in cultured human podocytes transfected with or without TLR4 siRNA. Expression of TLR4, phospho-p38 MAPK and phospho-NF-κB p65 was evaluated by quantitative reverse transcription polymerase chain reaction (qRT-PCR) or western blotting, and we analysed urinary Fg levels in adriamycin-treated mice and double immunofluorescence staining for TLR4, Fg and podocin...
April 13, 2017: Nephrology
https://www.readbyqxmd.com/read/28407300/thrombin-induces-ccl2-expression-in-human-lung-fibroblasts-via-p300-mediated-histone-acetylation-and-nf-kappab-activation
#10
Xiaoling Deng, Xiaoqiong Zhou, Yan Deng, Fan Liu, Xiaofan Feng, Qi Yin, Yinzhen Gu, Songlin Shi, Mingyan Xu
BACKGROUND AND OBJECTIVE: Thrombin has been shown to play a key role in lung diseases such as pulmonary fibrosis via the induction of fibrotic cytokine- chemokine (CC motif) ligand-2 (CCL2) expression. We previously reported that transcription factor nuclear factor-κB (NF-κB) is responsible for thrombin-induced CCL2 expression in human lung fibroblasts (HLFs). Here we extended our study to investigate the epigenetic regulation mechanism for thrombin-induced CCL2 expression in HLF. METHODS: HLFs were cultured in F-12 medium...
April 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28404892/gambogic-acid-suppresses-cancer-invasion-and-migration-by-inhibiting-tgf%C3%AE-1-induced-epithelial-to-mesenchymal-transition
#11
Kai Zhao, Shuai Zhang, Xiuming Song, Yuyuan Yao, Yuxin Zhou, Qidong You, Qinglong Guo, Na Lu
The epithelial-to-mesenchymal transition (EMT) contributes to the disruption of cell-cell junctions and imbues cancer cells with invasive and migratory properties. In this study, we investigated the effect of gambogic acid, a xanthone extracted from the resin of Garciania hanburyi, on transforming growth factor β1 (TGFβ1)-induced EMT. Gambogic acid inhibited the invasion and migration of TGFβ1-induced A549 cells in vitro. Gambogic acid also increased the mRNA and protein expression of E-cadherin, but repressed the mRNA and protein expression of N-cadherin, vimentin, and transcription factor TWIST1...
February 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402257/-dead-box-rna-helicase-3-modulates-nf-%C3%AE%C2%BAb-signal-pathway-by-controlling-the-phosphorylation-of-pp2a-c-subunit
#12
Xin Wang, Rui Wang, Miao Luo, Chen Li, Hua-Xia Wang, Chang-Chao Huan, Yu-Rong Qu, Ying Liao, Xiang Mao
Asp-Glu-Ala-Asp (DEAD)-box RNA helicase 3 (DDX3), an ATP-dependent RNA helicase, is associated with RNA splicing, mRNA export, transcription, translation, and RNA decay. Recent studies revealed that DDX3 participates in innate immune response during virus infection by interacting with TBK1 and regulating the production of IFN-β. In our studies, we demonstrated that DDX3 regulated NF-κB signal pathway. We found that DDX3 knockdown reduced the phosphorylation of p65 and IKK-β and ultimately attenuated the production of inflammatory cytokines induced by poly(I:C) or TNF-α stimulation...
March 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28398147/salmeterol-a-long-acting-%C3%AE-2-aderenergic-receptor-agonist-inhibits-macrophage-activation-by-lipopolysaccharide-from-porphyromonas-gingivalis
#13
Monika Sharma, Lindsay Patterson, Elisha Chapman, Patrick M Flood
BACKGROUND: Salmeterol is a long-acting beta-2 adrenergic receptor (β2AR) agonist that is used to treat chronic obstructive pulmonary disease (COPD). Previously we had shown that pre-incubation of primary microglial enriched cells with Salmeterol could inhibit the inflammatory response induced by E. Coli LPS, a TLR-4 (toll-like receptor-4) agonist. In this study, we sought to determine if Salmeterol had a similar inhibitory effect on the inflammatory response of the murine macrophage cell line RAW264...
March 3, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28396714/cinnamon-polyphenol-extract-inhibits-hyperlipidemia-and-inflammation-by-modulation-of-transcription-factors-in-high-fat-diet-fed-rats
#14
Zeynep Tuzcu, Cemal Orhan, Nurhan Sahin, Vijaya Juturu, Kazim Sahin
We evaluated the effects of cinnamon polyphenol extract on hepatic transcription factors expressions including SREBP-1c and LXR-α in rats fed high fat diet (HFD). Twenty-eight Wistar rats were allocated into four groups: (i) normal control: animals fed with normal chow; (ii) cinnamon: animals supplemented with cinnamon polyphenol; (iii) HFD: animals fed a high-fat diet; and (iv) HFD + cinnamon: animals fed a high-fat diet and treated with cinnamon polyphenol. Obesity was linked to hyperglycemia, hyperlipidemia, and oxidative stress as imitated by elevated serum glucose, lipid profile, and serum and liver malondialdehyde (MDA) concentrations...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28394356/twist1-dnmt3a-and-mir186-establish-a-regulatory-circuit-that-controls-inflammation-associated-prostate-cancer-progression
#15
X Zhao, R Deng, Y Wang, H Zhang, J Dou, L Li, Y Du, R Chen, J Cheng, J Yu
Increasing evidences suggest that inflammatory microenvironment has a crucial role in prostate cancer (PCa) progression; however, the underlying mechanisms are unclear. Here, we used the inflammation-associated prostate cellular transformation model to screen out a crucial microRNA, miR186, which was significantly downregulated in the transformed cells and effectively rescued the transformed phenotype. On stimulation of inflammatory cytokines, the activated nuclear factor kappa B (NF-κB)/p65 was able to induce miR186 expression through binding to its promoter in non-transformed cells, whereas this pathway was lost in transformed cells...
April 10, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28391962/su9516-increases-%C3%AE-7%C3%AE-1-integrin-and-ameliorates-disease-progression-in-the-mdx-mouse-model-of-duchenne-muscular-dystrophy
#16
Apurva Sarathy, Ryan D Wuebbles, Tatiana M Fontelonga, Ashley R Tarchione, Lesley A Mathews Griner, Dante J Heredia, Andreia M Nunes, Suzann Duan, Paul D Brewer, Tyler Van Ry, Grant W Hennig, Thomas W Gould, Andrés E Dulcey, Amy Wang, Xin Xu, Catherine Z Chen, Xin Hu, Wei Zheng, Noel Southall, Marc Ferrer, Juan Marugan, Dean J Burkin
Duchenne muscular dystrophy (DMD) is a fatal muscle disease caused by mutations in the dystrophin gene, resulting in a complete loss of the dystrophin protein. Dystrophin is a critical component of the dystrophin glycoprotein complex (DGC), which links laminin in the extracellular matrix to the actin cytoskeleton within myofibers and provides resistance to shear stresses during muscle activity. Loss of dystrophin in DMD patients results in a fragile sarcolemma prone to contraction-induced muscle damage. The α7β1 integrin is a laminin receptor protein complex in skeletal and cardiac muscle and a major modifier of disease progression in DMD...
April 5, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28390675/promotion-of-wilms-tumor-cells-migration-and-invasion-by-mono-2-ethyhexyl-phthalate-mehp-via-activation-of-nf-%C3%AE%C2%BAb-signals
#17
Zhansheng Wang, Minkun Shao, Yulu Liu
Wilms tumor is a pediatric kidney cancer associated with inactivation of the WT1 tumor-suppressor gene in 5-10% of cases. There is an urgent need to illustrate risk factors which can trigger the motility of Wilms tumor cells. Our present study revealed that mono-(2-ethylhexyl) phthalate (MEHP) exposure can significantly increase the in vitro migration and invasion of G401 and WiT49 cells. Real time PCR and western blot analysis revealed that MEHP treatment can increase the expression of metalloproteinase-2 (MMP-2) and MMP-9, while had no effect on the expression of MMP-1, MMP-3, or MMP-12...
April 6, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28386055/tnf-alpha-promotes-invasion-and-metastasis-via-nf-kappa-b-pathway-in-oral-squamous-cell-carcinoma
#18
Daofang Tang, Detao Tao, Yuan Fang, Chao Deng, Qing Xu, Jingping Zhou
BACKGROUND Recent evidence reveals that the inflammatory microenvironment is associated with tumor migration, invasion, and metastasis. Tumor necrosis factor-α (TNF-α) play a vital role in regulation of the inflammatory process in tumor development. Nuclear factor-kappa B (NF-κB) is one of the key transcription factors which regulate processes in tumor promotion. The aim of this study was to explore the role of NF-κB on the invasion and migration of oral squamous cell carcinoma (OSCC). MATERIAL AND METHODS The IKKβ and p65 mRNA and protein levels were determined by quantitative RT-PCR and western blot...
April 7, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28382926/aldosterone-induces-inflammatory-cytokines-in-penile-corpus-cavernosum-by-activating-the-nf-%C3%AE%C2%BAb-pathway
#19
Fei Wu, Zu-Quan Xiong, Shan-Hua Mao, Ji-Meng Hu, Jian-Qing Wang, Hao-Wen Jiang, Qiang Ding
Emerging evidence indicates that aldosterone and mineralocorticoid receptors (MRs) are associated with the pathogenesis of erectile dysfunction. However, the molecular mechanisms remain largely unknown. In this study, freshly isolated penile corpus cavernosum tissue from rats was treated with aldosterone, with or without MRs inhibitors. Nuclear factor (NF)-kappa B (NF-κB) activity was evaluated by real-time quantitative PCR, luciferase assay, and immunoblot. The results demonstrated that mRNA levels of the NF-κB target genes, including inhibitor of NF-κB alpha (IκB-α), NF-κB1, tumor necrosis factor-alpha (TNF-α), and interleukin 6 (IL-6), were higher after aldosterone treatment...
April 4, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/28378844/mkrn2-is-a-novel-ubiquitin-e3-ligase-for-the-p65-subunit-of-nf-%C3%AE%C2%BAb-and-negatively-regulates-inflammatory-responses
#20
Chanyoung Shin, Yuma Ito, Shota Ichikawa, Makio Tokunaga, Kumiko Sakata-Sogawa, Takashi Tanaka
Activation of NF-κB transcription factor is strictly regulated to prevent excessive inflammatory responses leading to immunopathology. However, it still remains unclear how NF-κB activation is negatively controlled. The PDZ-LIM domain-containing protein PDLIM2 is a nuclear ubiquitin E3 ligase targeting the p65 subunit of NF-κB for degradation, thus terminating NF-κB-mediated inflammation. Using yeast two-hybrid screening, we sought to isolate PDLIM2-interacting proteins that are critical for suppressing NF-κB signaling...
April 5, 2017: Scientific Reports
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