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Cytokine signal transduction

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https://www.readbyqxmd.com/read/29237438/effects-of-sesamin-on-primary-human-synovial-fibroblasts-and-sw982-cell-line-induced-by-tumor-necrosis-factor-alpha-as-a-synovitis-like-model
#1
Manatsanan Khansai, Thanyaluck Phitak, Jeerawan Klangjorhor, Sasimol Udomrak, Kanda Fanhchaksai, Peraphan Pothacharoen, Prachya Kongtawelert
BACKGROUND: Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic synovitis, cartilage degradation and bone deformities. Synovitis is the term for inflammation of the synovial membrane, an early stage of RA. The pathogenesis of the disease occurs through cytokine induction. The major cytokine that increases the severity of RA is TNF-α. Thus, inhibition of the TNF-α cascade is an effective way to diminish the progression of the disease. We are interested in investigating the difference between primary human synovial fibroblast (hSF) cells and SW982 as synovitis models induced by TNF-α and in monitoring their responses to sesamin as an anti-inflammatory phytochemical...
December 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29232822/microglia-m2a-polarization-as-potential-link-between-food-allergy-and-autism-spectrum-disorders
#2
REVIEW
Hans O Kalkman, Dominik Feuerbach
Atopic diseases are frequently co-morbid with autism spectrum disorders (ASD). Allergic responses are associated with an activation of mast cells, innate lymphoid cells, and Th2 cells. These cells produce type-2 cytokines (IL4 and IL13), which stimulate microglia and macrophages to adopt a phenotype referred to as 'alternative activation' or 'M2A'. M2A-polarized macrophages and microglia play a physiological role in tissue repair by secreting growth factors such as brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1...
December 9, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/29221127/long-noncoding-rnas-expression-profile-and-functional-networks-in-rheumatoid-arthritis
#3
Donghua Xu, Ye Jiang, Lu Yang, Xixing Hou, Jihong Wang, Weijun Gu, Xiaodong Wang, Lanyu Liu, Juan Zhang, Hongying Lu
The modifying effects of long noncoding RNAs (lncRNAs) in rheumatoid arthritis (RA) recently have drawn much attention; however, the underlying mechanisms remain largely unknown. Herein, we aim to investigate the expression profile of lncRNAs in RA and identify promising targets for RA diagnosis and treatment. Microarray screening and real-time PCR of lncRNAs were performed by use of serum samples from 3 RA patients and 3 healthy controls. Significantly differentially expressed lncRNAs were verified in serum samples from 43 RA patients and 40 healthy controls by real-time PCR...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29218499/effect-of-clip3-upregulation-on-astrocyte-proliferation-and-subsequent-glial-scar-formation-in-the-rat-spinal-cord-via-stat3-pathway-after-injury
#4
Xiaoqing Chen, Cheng Chen, Jie Hao, Jiyun Zhang, Feng Zhang
Spinal cord injury (SCI) is a devastating event resulting in neuron degeneration and permanent paralysis through inflammatory cytokine overproduction and glial scar formation. Presently, the endogenous molecular mechanisms coordinating glial scar formation in the injured spinal cord remain elusive. Signal transducer and activator of transcription 3 (STAT3) is a well-known transcription factor particularly involving in cell proliferation and inflammation in the lesion site following SCI. Meanwhile, CAP-Gly domain containing linker protein 3(CLIP3), a vital cytoplasmic protein, has been confirmed to providing an optimal conduit for intracellular signal transduction and interacting with STAT3 with mass spectrometry analysis...
December 7, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29216931/vista-deficiency-attenuates-antibody-induced-arthritis-and-alters-macrophage-gene-expression-in-response-to-simulated-immune-complexes
#5
Sabrina Ceeraz, Susan K Eszterhas, Petra A Sergent, David A Armstrong, Alix Ashare, Thomas Broughton, Li Wang, Dov Pechenick, Christopher M Burns, Randolph J Noelle, Matthew P Vincenti, Roy A Fava
BACKGROUND: In addition to activated T cells, the immune checkpoint inhibitor "V domain-containing Ig suppressor of T-cell activation" (VISTA) is expressed by myeloid cell types, including macrophages and neutrophils. The importance of VISTA expression by myeloid cells to antibody-induced arthritis and its potential for relevance in human disease was evaluated. METHODS: VISTA was immunolocalized in normal and arthritic human synovial tissue sections and synovial tissue lysates were subjected to western blot analysis...
December 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29216299/recombinant-vaccinia-virus-coded-interferon-inhibitor-b18r-expression-refolding-and-a-use-in-a-mammalian-expression-system-with-a-rna-vector
#6
Yuriy G Kim, Aliya Zh Baltabekova, Erzhan E Zhiyenbay, Altynai S Aksambayeva, Zhadyra S Shagyrova, Rinat Khannanov, Erlan M Ramanculov, Alexandr V Shustov
B18R protein of Vaccinia virus binds to type I interferons and inhibits activation of interferon-mediated signal transduction. Cells which have unimpaired interferon signaling such as primary cell cultures or some industrially important cell lines are capable of development of an antiviral state. An establishment of the antiviral state limits replication of RNA-viruses and can suppress replication of RNA vectors. The interferon inhibitor B18R effectively prevents the establishment of the antiviral state. For this reason, B18R has become a ubiquitous component of protocols for epigenetic reprogramming which use transfections of RNA replicons or mRNA...
2017: PloS One
https://www.readbyqxmd.com/read/29212859/human-hair-follicle-transcriptome-profiling-a-minimally-invasive-tool-to-assess-molecular-adaptations-upon-low-volume-high-intensity-interval-training
#7
Jing Zhang, Sarah J Wallace, Maria Y Shiu, Ingrid Smith, Shawn G Rhind, Valerie S Langlois
High-intensity interval training (HIIT) has become a popular fitness training approach under both civilian and military settings. Consisting of brief and intense exercise intervals, HIIT requires less time commitment yet is able to produce the consistent targeted physical adaptations as conventional endurance training. To effectively characterize and monitor HIIT-induced cellular and molecular responses, a highly accessible yet comprehensive biomarker discovery source is desirable. Both gene differential expression (DE) and gene set (GS) analyses were conducted using hair follicle transcriptome established from pre and postexercise subjects upon a 10-day HIIT program by RNA-Seq, Comparing between pre and posttraining groups, differentially expressed protein coding genes were identified...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29207668/genetic-or-pharmacologic-inhibition-of-egfr-ameliorates-sepsis-induced-aki
#8
Xuan Xu, Juan Wang, Ruhao Yang, Zheng Dong, Dongshan Zhang
Despite recent studies have demonstrated that the EGF receptor (EGFR) activation provided a renoprotective role during ischemic and folic acid-induced AKI, the role and regulation mechanism of EGFR in septic AKI remains unclear. Here, gefitinib, a highly selective EGFR inhibitor, abrogated LPS-induced phosphorylation of EGFR, ERK1/2, and STAT3 as well as expression of COX, eNOS, and proinflammatory cytokines in HK-2 cells. In addition, c-Src is an upstream of EGFR signaling pathway and mediates LPS-induced EGFR transactivation...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29203970/expression-of-the-jak-stat-signaling-pathway-in-bullous-pemphigoid-and-dermatitis-herpetiformis
#9
K Juczynska, A Wozniacka, E Waszczykowska, M Danilewicz, M Wagrowska-Danilewicz, J Wieczfinska, R Pawliczak, A Zebrowska
A family of eleven proteins comprises the Janus kinases (JAK) and signal transducers and activators of transcription (STAT) signaling pathway, which enables transduction of signal from cytokine receptor to the nucleus and activation of transcription of target genes. Irregular functioning of the cascade may contribute to pathogenesis of autoimmune diseases; however, there are no reports concerning autoimmune bullous diseases yet to be published. The aim of this study was to evaluate the expression of proteins constituting the JAK/STAT signaling pathway in skin lesions and perilesional area in dermatitis herpetiformis (DH) and bullous pemphigoid (BP), as well as in the control group...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29202478/%C3%AE-%C3%AE-tcr-recruits-the-syk-pi3k-axis-to-drive-proinflammatory-differentiation-program
#10
Ryunosuke Muro, Takeshi Nitta, Kenta Nakano, Tadashi Okamura, Hiroshi Takayanagi, Harumi Suzuki
γδT cells produce inflammatory cytokines and have been implicated in the pathogenesis of cancer, infectious diseases, and autoimmunity. The T cell receptor (TCR) signal transduction that specifically regulates the development of IL-17-producing γδT (γδT17) cells largely remains unclear. Here, we showed that the receptor proximal tyrosine kinase Syk is essential for γδTCR signal transduction and development of γδT17 in the mouse thymus. Zap70, another tyrosine kinase essential for the development of αβT cells, failed to functionally substitute for Syk in the development of γδT17...
December 4, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29191014/pyrrolidone-modification-prevents-pamam-dendrimers-from-activation-of-pro-inflammatory-signaling-pathways-in-human-monocytes
#11
Anna Janaszewska, Micha Gorzkiewicz, Mario Ficker, Johannes Fabritius Petersen, Valentina Paolucci, Jørn Bolstad Christensen, Barbara Klajnert-Maculewicz
BACKGROUND: The biological features of dendrimers are affected by the character of highly-reactive terminal moieties. In some polyamine dendrimer types the surface charge makes them bio-incompatible and prevent their direct medical application. Moreover, foreign particles can induce the immune response which is undesirable due to the adverse side effects in vivo. The reduction of cytotoxicity of positively charged macromolecules is possible through chemical modifications of terminal groups...
November 30, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29183158/critical-roles-of-glutaredoxin-in-brain-cells-implications-for-parkinson-s-disease
#12
Olga Gorelenkova Miller, John J Mieyal
SIGNIFICANCE: Glutaredoxin (Grx1), an evolutionarily conserved and ubiquitous enzyme, regulates redox signal transduction and protein redox homeostasis by catalyzing reversible S-glutathionylation. Grx1 plays different roles in different cell types. In Parkinson's disease (PD), Grx1 regulates apoptosis signaling in dopaminergic neurons, so that loss of Grx1 leads to increased cell death; in microglial cells, Grx1 regulates pro-inflammatory signaling, so that upregulation of Grx1 promotes cytokine production...
November 28, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29177857/biochemical-isolation-of-the-myddosome-from-murine-macrophages
#13
Yunhao Tan, Jonathan C Kagan
Ligand-induced macromolecular protein complex formation has emerged as a common means by which the innate immune system activates signal transduction pathways essential for host defense. Despite their structural divergence, key signaling molecules in diverse innate immune pathways mediate signal transduction by assembling higher-order protein complexes at specific subcellular locations in a stimulus-dependent manner. These protein complexes are collectively known as the supramolecular organizing centers (SMOCs), which link active receptors to a variety of downstream cellular responses...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29176951/much-more-than-a-cardiotonic-steroid-modulation-of-inflammation-by-ouabain
#14
REVIEW
Luiz H A Cavalcante-Silva, Éssia de Almeida Lima, Deyse C M Carvalho, José M de Sales-Neto, Anne K de Abreu Alves, José G F M Galvão, Juliane S de França da Silva, Sandra Rodrigues-Mascarenhas
Since the discovery of ouabain as a cardiotonic steroid hormone present in higher mammals, research about it has progressed rapidly and several of its physiological and pharmacological effects have been described. Ouabain can behave as a stress hormone and adrenal cortex is its main source. Direct effects of ouabain are originated due to the binding to its receptor, the Na+/K+-ATPase, on target cells. This interaction can promote Na+ transport blockade or even activation of signaling transduction pathways (e...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29174852/activation-of-epac-alleviates-inflammation-and-vascular-leakage-in-lps-induced-acute-murine-lung-injury
#15
Xuefeng Wang, Shunde Song, Zhengqiang Hu, Zhewen Zhang, Yajun Li, Chunguang Yan, Zigang Li, Huifang Tang
Exchange protein directly activated by cAMP (Epac) is an important molecule in cAMP signal transduction, but the effect of Epac on lipopolysaccharide (LPS)-induced acute lung injury (ALI) is unclear. In this study, we treated in vitro and in vivo models with the Epac activator 8CPT to determine the effect and related mechanisms of Epac. The in vitro results indicate that 8CPT inhibits lipopolysaccharide (LPS)-induced tumor necrosis factor-α (TNF-α) release from mouse macrophages (MH-S), whereas the protein kinase A (PKA) activator 6BnZ has no effect...
November 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29169044/esculentoside-a-specifically-binds-to-ribosomal-protein-s3a-and-impairs-lps-induced-signaling-in-macrophages
#16
Ying-Hua Li, Jing Wang, Ying Liu, Lie Qiu, Jian-Zhong Li, Hong-Gang Hu, Zhen-Lin Hu, Wen Zhang, Bin Lu, Jun-Ping Zhang
Esculentoside A (EsA), a saponin isolated from Phytolacca esculenta, is reported as a potent suppressor of pro-inflammatory functions of macrophages. However, little is known about the target proteins of EsA for its anti-inflammatory activity. In the present study, to identify the intracellular target for EsA, affinity resins bearing immobilized EsA were used to capture binding proteins of EsA from RAW264.7 cell lysates. Mass spectrography and Western blot analysis of captured proteins indicated that ribosomal protein S3a preferentially bound to EsA affinity resin...
November 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29162862/tyk2-induced-phosphorylation-of-y640-suppresses-stat3-transcriptional-activity
#17
Raffaele Mori, Joris Wauman, Laura Icardi, José Van der Heyden, Lode De Cauwer, Frank Peelman, Karolien De Bosscher, Jan Tavernier
STAT3 is a pleiotropic transcription factor involved in homeostatic and host defense processes in the human body. It is activated by numerous cytokines and growth factors and generates a series of cellular effects. Of the STAT-mediated signal transduction pathways, STAT3 transcriptional control is best understood. Jak kinase dependent activation of STAT3 relies on Y705 phosphorylation triggering a conformational switch that is stabilized by intermolecular interactions between SH2 domains and the pY705 motif...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29155256/role-of-toll-like-receptors-in-inflammatory-bowel-disease
#18
REVIEW
Nastaran Kordjazy, Arvin Haj-Mirzaian, Arya Haj-Mirzaian, Mohammad Mojtaba Rohani, Erwin W Gelfand, Nima Rezaei, Amir Hossein Abdolghaffari
Inflammatory bowel disease (IBD) is the chronic inflammation of the gastrointestinal tract. Recently, studies of the interplay between the adaptive and innate immune responses have provided a better understanding of the immunopathogenesis of inflammatory disorders such as IBD, as well as identification of novel targets for more potent interventions. Toll-like receptors (TLRs) are a class of proteins that play a significant role in the innate immune system and are involved in inflammatory processes. Activation of TLR signal transduction pathways lead to the induction of numerous genes that function in host defense, including those for inflammatory cytokines, chemokines, and antigen presenting molecules...
November 16, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29137913/neutrophil-cd16b-crosslinking-induces-lipid-raft-mediated-activation-of-shp-2-and-affects-cytokine-expression-and-retarded-neutrophil-apoptosis
#19
H Yang, H Jiang, Y Song, D J Chen, X J Shen, J H Chen
Two different types of FcRs for IgG are constitutively expressed on the surface of human neutrophils, namely, FcγRIIA (CD32a) and FcγRIIIB (CD16b). Unlike FcγRIIA, FcγRIIIb is GPI anchored to the cell membrane and its signal transduction is still ambiguous. To further understand the signal transduction of CD16b, we compared neutrophil cytokine expression and apoptosis by the cross-linking of CD32a and CD16b respectively. We found that both CD32a and CD16b crosslinking can activate neutrophils, but did not exactly share cytokine expression profiles...
November 11, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29137840/resolvin-d1-attenuates-imiquimod-induced-mice-psoriasiform-dermatitis-through-mapks-and-nf-%C3%AE%C2%BAb-pathways
#20
Juntao Xu, Xiaoru Duan, Feng Hu, Devesh Poorun, Xinxin Liu, Xin Wang, Song Zhang, Lu Gan, Mengwen He, Ke Zhu, Zhangyin Ming, Hongxiang Chen
BACKGROUND: Resolvin D1 (RvD1), a pro-resolution lipid mediator derived from docosahexaenoic acid (DHA), has been described to promote several kinds of inflammatory resolution. However, the effects and anti-inflammatory mechanisms of RvD1 on psoriasis have not been previously reported. OBJECTIVE: The present study aimed to determine the protective effects and the underlying mechanisms of RvD1 on imiquimod (IMQ)-induced psoriasiform dermatitis. METHODS: Mice were topically treated with IMQ to develop psoriasiform dermatitis on their shaved back, pretreated intraperitoneally (i...
November 11, 2017: Journal of Dermatological Science
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