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TNFR1

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https://www.readbyqxmd.com/read/28546545/extensive-phenotypic-characterization-of-a-new-transgenic-mouse-reveals-pleiotropic-perturbations-in-physiology-due-to-mesenchymal-hgh-minigene-expression
#1
Aimilios Kaklamanos, Jan Rozman, Manolis Roulis, Niki Karagianni, Maria Armaka, Moya Wu, Laura Brachthäuser, Julia Calzada-Wack, Marion Horsch, Johannes Beckers, Birgit Rathkolb, Thure Adler, Frauke Neff, Eckhard Wolf, Valerie Gailus-Durner, Helmut Fuchs, Martin Hrabe de Angelis, George Kollias
The human growth hormone (hGH) minigene used for transgene stabilization in mice has been recently identified to be locally expressed in the tissues where transgenes are active and associated with phenotypic alterations. Here we extend these findings by analyzing the effect of the hGH minigene in TgC6hp55 transgenic mice which express the human TNFR1 under the control of the mesenchymal cell-specific CollagenVI promoter. These mice displayed a fully penetrant phenotype characterized by growth enhancement accompanied by perturbations in metabolic, skeletal, histological and other physiological parameters...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28542390/analysis-of-early-mesothelial-cell-responses-to-staphylococcus-epidermidis-isolated-from-patients-with-peritoneal-dialysis-associated-peritonitis
#2
Amanda L McGuire, Kieran T Mulroney, Christine F Carson, Ramesh Ram, Grant Morahan, Aron Chakera
The major complication of peritoneal dialysis (PD) is the development of peritonitis, an infection within the abdominal cavity, primarily caused by bacteria. PD peritonitis is associated with significant morbidity, mortality and health care costs. Staphylococcus epidermidis is the most frequently isolated cause of PD-associated peritonitis. Mesothelial cells are integral to the host response to peritonitis, and subsequent clinical outcomes, yet the effects of infection on mesothelial cells are not well characterised...
2017: PloS One
https://www.readbyqxmd.com/read/28539998/correlation-between-cannabidiol-induced-reduction-of-infarct-volume-and-inflammatory-factors-expression-in-ischemic-stroke-model
#3
Sepideh Khaksar, Mohammad Reza Bigdeli
INTRODUCTION: Recent studies demonstrated that cannabidiol had neuroprotective property. There is some evidence about effective role of cannabidiol in reduction of ischemic damages. It has been reported that infarct size is influenced by various factors after MCAO, including inflammatory factors. The aim of the present study was to evaluate the effect of cannabidiol on infarction volume and correlation of infarct size with tumor necrosis factor receptor 1 (TNFR1), and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) expression...
March 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/28539722/effect-of-helix-aspersa-extract-on-tnf%C3%AE-nf-%C3%AE%C2%BAb-and-some-tumor-suppressor-genes-in-breast-cancer-cell-line-hs578t
#4
Ibtissem El Ouar, Cornelia Braicu, Dalila Naimi, Alexendru Irimie, Ioana Berindan-Neagoe
BACKGROUND: The garden snail, Helix aspersa, is a big land snail widely found in the Mediterranean countries. It is one of the most consumed species and widely used in zootherapy. OBJECTIVE: The present study was carried out to investigate for the first time the first time the antitumor activity of an aqueous extract from Helix aspersa. MATERIALS AND METHODS: The effect of H. aspersa extract was studied on a triple negative breast cancer cell line Hs578T...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28530838/an-innovative-high-throughput-screening-approach-for-discovery-of-small-molecules-that-inhibit-tnf-receptors
#5
Chih Hung Lo, Nagamani Vunnam, Andrew K Lewis, Ting-Lan Chiu, Benjamin E Brummel, Tory M Schaaf, Benjamin D Grant, Prachi Bawaskar, David D Thomas, Jonathan N Sachs
Tumor necrosis factor receptor 1 (TNFR1) is a transmembrane receptor that binds tumor necrosis factor or lymphotoxin-alpha and plays a critical role in regulating the inflammatory response. Upregulation of these ligands is associated with inflammatory and autoimmune diseases. Current treatments reduce symptoms by sequestering free ligands, but this can cause adverse side effects by unintentionally inhibiting ligand binding to off-target receptors. Hence, there is a need for new small molecules that specifically target the receptors, rather than the ligands...
May 1, 2017: SLAS Discovery
https://www.readbyqxmd.com/read/28511863/expression-of-tnf-%C3%AE-system-members-in-bovine-ovarian-follicles-and-the-effects-of-tnf-%C3%AE-or-dexamethasone-on-preantral-follicle-survival-development-and-ultrastructure-in-vitro
#6
A W B Silva, R P Ribeiro, V G Menezes, R S Barberino, J R S Passos, A M P Dau, J J N Costa, L R F Melo, F T G Bezerra, M A M Donato, C A Peixoto, M H T Matos, P B D Gonçalves, R van den Hurk, J R V Silva
This study was conducted to detect the protein expression of TNF-α system members (TNF-α/TNFR1/TNFR2) in bovine ovarian follicles and to evaluate the effects of TNF-α or dexamethasone on the survival and growth of primordial follicles in vitro, as well as on gene expression in cultured ovarian tissue. It was hypothesized that TNF-α induces follicular atresia in ovarian tissues cultured in vitro, and that dexamethasone suppresses the production of endogenous TNF-α, which can improve follicle viability in vitro...
May 6, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28506461/mk2-phosphorylates-ripk1-to-prevent-tnf-induced-cell-death
#7
Isabel Jaco, Alessandro Annibaldi, Najoua Lalaoui, Rebecca Wilson, Tencho Tenev, Lucie Laurien, Chun Kim, Kunzah Jamal, Sidonie Wicky John, Gianmaria Liccardi, Diep Chau, James M Murphy, Gabriela Brumatti, Rebecca Feltham, Manolis Pasparakis, John Silke, Pascal Meier
TNF is an inflammatory cytokine that upon binding to its receptor, TNFR1, can drive cytokine production, cell survival, or cell death. TNFR1 stimulation causes activation of NF-κB, p38α, and its downstream effector kinase MK2, thereby promoting transcription, mRNA stabilization, and translation of target genes. Here we show that TNF-induced activation of MK2 results in global RIPK1 phosphorylation. MK2 directly phosphorylates RIPK1 at residue S321, which inhibits its ability to bind FADD/caspase-8 and induce RIPK1-kinase-dependent apoptosis and necroptosis...
May 10, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28500851/calreticulin-modulates-the-intracellular-survival-of-mycobacteria-by-regulating-er-stress-mediated-apoptosis
#8
Sung Hee Jo, Ji-Ae Choi, Yun-Ji Lim, Junghwan Lee, Soo-Na Cho, Sung-Man Oh, Dam Go, Seon-Hwa Kim, Chang-Hwa Song
Endoplasmic reticulum (ER)-stress-mediated apoptosis is a host defense mechanism against Mycobacterium tuberculosis (Mtb) infection. Calreticulin (CRT) is the major calcium-binding chaperone protein. Previous reports have suggested a close relationship between the cell-surface expression of CRT and apoptosis. In this study, the role of CRT during Mtb infection was examined. The results showed that Mtb infection induces CRT production by macrophages and that CRT levels are correlated with the degree of apoptotic cell death...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28497109/hippocampal-tnf%C3%AE-signaling-contributes-to-seizure-generation-in-an-infection-induced-mouse-model-of-limbic-epilepsy
#9
Dipan C Patel, Glenna Wallis, E Jill Dahle, Pallavi B McElroy, Kyle E Thomson, Raymond J Tesi, David E Szymkowski, Peter J West, Roy M Smeal, Manisha Patel, Robert S Fujinami, H Steve White, Karen S Wilcox
Central nervous system infection can induce epilepsy that is often refractory to established antiseizure drugs. Previous studies in the Theiler's murine encephalomyelitis virus (TMEV)-induced mouse model of limbic epilepsy have demonstrated the importance of inflammation, especially that mediated by tumor necrosis factor-α (TNFα), in the development of acute seizures. TNFα modulates glutamate receptor trafficking via TNF receptor 1 (TNFR1) to cause increased excitatory synaptic transmission. Therefore, we hypothesized that an increase in TNFα signaling after TMEV infection might contribute to acute seizures...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28453789/serum-tumor-necrosis-factor-receptor-1-is-associated-with-trajectories-of-functional-status-the-northern-manhattan-study
#10
Mandip S Dhamoon, Ying-Kuen Cheung, Yeseon P Moon, Clinton B Wright, Joshua Z Willey, Ralph L Sacco, Mitchell S V Elkind
We hypothesized that tumor necrosis factor receptor-1 (TNFR1) levels are associated with long-term trajectories of functional status independently of vascular risk factors and stroke and myocardial infarction (MI) occurring during follow-up. In the Northern Manhattan Study, stroke-free individuals in northern Manhattan aged >40 years had annual assessments with the Barthel index (BI) for a median of 13 years. Baseline demographics, risk factors, and laboratory studies included TNFR1 (n = 1,863). Generalized estimating equation models estimated standardized associations between TNFR1 and 1) baseline functional status and 2) change in function over time, adjusting for demographics, vascular risk factors, social variables, cognition, and depression, and stroke and MI occurring during follow-up...
April 27, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28451639/microglial-tnf%C3%AE-induces-cox2-and-pgi2-synthase-expression-in-spinal-endothelial-cells-during-neuropathic-pain
#11
Hirosato Kanda, Kimiko Kobayashi, Hiroki Yamanaka, Masamichi Okubo, Koichi Noguchi
Prostaglandins (PGs) are typical lipid mediators that play a role in homeostasis and disease. They are synthesized from arachidonic acid by cyclooxygenase 1 (COX1) and COX2. Although COX2 has been reported to be upregulated in the spinal cord after nerve injury, its expression and functional roles in neuropathic pain remain unclear. In this study, we investigated the expression of Cox2, PGI2 synthase (Pgis), and prostaglandin I2 receptor (IP receptor) mRNA in the rat spinal cord after spared nerve injury (SNI)...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28432091/suppressive-effects-of-tnf%C3%AE-il6-and-macrophages-on-thecal-androgen-production
#12
Moafaq S Samir, Claire Glister, Dareen Mattar, Mhairi Laird, Philip G Knight
Pro-inflammatory cytokines secreted by macrophages and other cell-types are implicated as intra-ovarian factors affecting different aspects of ovarian function including follicle and corpus luteum 'turnover', steroidogenesis and angiogenesis. Here, we compared granulosal (GC) and thecal (TC) expression of TNF, IL6 and their receptors (TNFR1, TNFRSF1B, IL6R) during bovine antral follicle development; all five mRNA transcripts were detected in both GC and TC and statistically significant cell-type and follicle stage-related differences were evident...
April 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28430652/inflammatory-factor-tnf-%C3%AE-promotes-the-growth-of-breast-cancer-via-the-positive-feedback-loop-of-tnfr1-nf-%C3%AE%C2%BAb-and-or-p38-p-stat3-hbxip-tnfr1
#13
Xiaoli Cai, Can Cao, Jiong Li, Fuquan Chen, Shuqin Zhang, Bowen Liu, Weiying Zhang, Xiaodong Zhang, Lihong Ye
In the connection between inflammation and cancer development, tumor necrosis factor-alpha (TNF-α) contributes to the tumorigenesis. However, the underlying mechanism remains poorly understood. In this study, we report that TNF-α enhances the growth of breast cancer through up-regulation of oncoprotein hepatitis B X-interacting protein (HBXIP). Our data showed that the levels of TNF-α were positively related to those of HBXIP in clinical breast cancer tissues. Moreover, TNF-α could up-regulate HBXIP in breast cancer cells...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427434/adenovirus-mediated-cd40l-gene-transfer-increases-teffector-tregulatory-cell-ratio-and-upregulates-death-receptors-in-metastatic-melanoma-patients
#14
A Schiza, J Wenthe, S Mangsbo, E Eriksson, Anders Nilsson, T H Tötterman, A Loskog, G Ullenhag
BACKGROUND AND AIMS: Malignant melanoma is an aggressive tumor sensitive for immunotherapy such as checkpoint blockade antibodies. Still, most patients with late stage disease do not respond, and the side effects can be severe. Stimulation of the CD40 pathway to initiate anti-tumor immunity is a promising alternative. Herein, we demonstrate immune profiling data from melanoma patients treated with an adenovirus-based CD40 ligand gene therapy (AdCD40L). METHODS: Peripheral blood mononuclear cells and plasma were collected from malignant melanoma patients (n = 15) enrolled in a phase I/IIa study investigating intratumoral delivery of AdCD40L with or without low dose cyclophosphamide...
April 20, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28422491/discovery-of-novel-ligands-for-tnf-%C3%AE-and-tnf-receptor-1-through-structure-based-virtual-screening-and-biological-assay
#15
Si Chen, Zhiwei Feng, Yun Wang, Shifan Ma, Ziheng Hu, Peng Yang, Yifeng Chai, Xiangqun Xie
Tumor necrosis factor α (TNF-α) is overexpressed in various diseases, and it has been a validated therapeutic target for autoimmune diseases. All therapeutics currently used to target TNF-α are biomacromolecules, and limited numbers of TNF-α chemical inhibitors have been reported, which makes the identification of small-molecule alternatives an urgent need. Recent studies have mainly focused on identifying small molecules that directly bind to TNF-α or TNF receptor-1 (TNFR1), inhibit the interaction between TNF-α and TNFR1, and/or regulate related signaling pathways...
May 11, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28412220/inflammation-induced-glua1-trafficking-and-membrane-insertion-of-ca-2-permeable-ampa-receptors-in-dorsal-horn-neurons-is-dependent-on-spinal-tumor-necrosis-factor-pi3-kinase-and-protein-kinase-a
#16
G Wigerblad, J R Huie, H Z Yin, M Leinders, R A Pritchard, F J Koehrn, W-H Xiao, G J Bennett, R L Huganir, A R Ferguson, J H Weiss, C I Svensson, L S Sorkin
Peripheral inflammation induces sensitization of nociceptive spinal cord neurons. Both spinal tumor necrosis factor (TNF) and neuronal membrane insertion of Ca(2+) permeable AMPA receptor (AMPAr) contribute to spinal sensitization and resultant pain behavior, molecular mechanisms connecting these two events have not been studied in detail. Intrathecal (i.t.) injection of TNF-blockers attenuated paw carrageenan-induced mechanical and thermal hypersensitivity. Levels of GluA1 and GluA4 from dorsal spinal membrane fractions increased in carrageenan-injected rats compared to controls...
April 12, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28389814/effect-of-tonsillectomy-with-steroid-pulse-therapy-on-circulating-tumor-necrosis-factor-receptors-1-and-2-in-iga-nephropathy
#17
Maki Murakoshi, Tomohito Gohda, Yuji Sonoda, Hitoshi Suzuki, Yasuhiko Tomino, Satoshi Horikoshi, Yusuke Suzuki
BACKGROUND: High circulating levels of soluble tumor necrosis factor receptors (TNFRs: TNFR1, TNFR2) predict renal function decline in a variety of kidney diseases. Tonsillectomy with steroid pulse (TSP) therapy has been reported as a remission induction therapy in IgA nephropathy (IgAN), mainly in Japan. However, little is known about whether TNFR levels change after TSP therapy in patients with IgAN. METHODS: Two hundred twenty-three patients with IgAN were stratified according to the estimated glomerular filtration rate (eGFR): Group I (eGFR ≥ 60 mL/min/1...
April 7, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28387756/pore-forming-toxin-mediated-ion-dysregulation-leads-to-death-receptor-independent-necroptosis-of-lung-epithelial-cells-during-bacterial-pneumonia
#18
Norberto González-Juarbe, Kelley Margaret Bradley, Anukul Taranath Shenoy, Ryan Paul Gilley, Luis Felipe Reyes, Cecilia Anahí Hinojosa, Marcos Ignacio Restrepo, Peter Herman Dube, Molly Ann Bergman, Carlos Javier Orihuela
We report that pore-forming toxins (PFTs) induce respiratory epithelial cell necroptosis independently of death receptor signaling during bacterial pneumonia. Instead, necroptosis was activated as a result of ion dysregulation arising from membrane permeabilization. PFT-induced necroptosis required RIP1, RIP3 and MLKL, and could be induced in the absence or inhibition of TNFR1, TNFR2 and TLR4 signaling. We detected activated MLKL in the lungs from mice and nonhuman primates experiencing Serratia marcescens and Streptococcus pneumoniae pneumonia, respectively...
May 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28385632/ultrastructural-characterization-of-tumor-necrosis-factor-alpha-receptor-type-1-distribution-in-the-hypothalamic-paraventricular-nucleus-of-the-mouse
#19
Michael J Glass, June Chan, Virginia M Pickel
The immune/inflammatory signaling molecule tumor necrosis factor α (TNFα) is an important mediator of both constitutive and plastic signaling in the brain. In particular, TNFα is implicated in physiological processes, including fever, energy balance, and autonomic function, known to involve the hypothalamic paraventricular nucleus (PVN). Many critical actions of TNFα are transduced by the TNFα type 1 receptor (TNFR1), whose activation has been shown to potently modulate classical neural signaling. There is, however, little known about the cellular sites of action for TNFR1 in the PVN...
June 3, 2017: Neuroscience
https://www.readbyqxmd.com/read/28384542/gene-expression-in-blood-of-children-and-adolescents-mediation-between-childhood-maltreatment-and-major-depressive-disorder
#20
Leticia Maria Spindola, Pedro Mario Pan, Patricia Natalia Moretti, Vanessa Kiyomi Ota, Marcos Leite Santoro, Hugo Cogo-Moreira, Ary Gadelha, Giovanni Salum, Gisele Gus Manfro, Jair Jesus Mari, Helena Brentani, Rodrigo Grassi-Oliveira, Elisa Brietzke, Euripedes Constantino Miguel, Luis Augusto Rohde, João Ricardo Sato, Rodrigo Affonseca Bressan, Sintia Iole Belangero
Investigating major depressive disorder (MDD) in childhood and adolescence can help reveal the relative contributions of genetic and environmental factors to MDD, since early stages of disease have less influence of illness exposure. Thus, we investigated the mRNA expression of 12 genes related to the hypothalamic-pituitary-adrenal (HPA) axis, inflammation, neurodevelopment and neurotransmission in the blood of children and adolescents with MDD and tested whether a history of childhood maltreatment (CM) affects MDD through gene expression...
March 22, 2017: Journal of Psychiatric Research
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