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https://www.readbyqxmd.com/read/28528205/heterotrimeric-complex-of-p38-mapk-pkc%C3%AE-and-tirap-is-required-for-ap1-mediated-inflammatory-response
#1
Mirza S Baig, Dongfang Liu, Kannan Muthu, Anjali Roy, Uzma Saqib, Adnan Naim, Syed M Faisal, Mansi Srivastava, Rohit Saluja
Inflammation could be described as a physiological response of the body to tissue injury, pathogen invasion, and irritants. During the inflammatory phase, cells of both the innate as well as adaptive immune system are activated and recruited to the site of inflammation. These mediators are downstream targets for the transcription factors; activator protein-1 (AP1), nuclear factor kappa-light-chain-enhancer (NF-κB), signal transducers and activators of transcription factors (STAT1), as well as interferon regulatory factors (IRFs), which control the expression of most immunomodulatory genes...
May 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28522431/wnk1-and-p38-mapk-distribution-in-ionocytes-and-accessory-cells-of-euryhaline-teleost-fish-implies-ionoregulatory-function
#2
W S Marshall, R R F Cozzi, M Spieker
Ionocytes of euryhaline teleost fish secrete NaCl, under regulation by serine and threonine kinases, including with-no-lysine kinase (WNK1) and p38 mitogen-activated protein kinase (MAPK). Mummichogs (Fundulus heteroclitus L.) were acclimated to freshwater (FW), full strength seawater (SW) and hypersaline conditions (2SW). Immunocytochemistry of ionocytes in opercular epithelia of fish acclimated to SW and 2SW revealed that WNK1-anti-pT58 phosphoantibody localized strongly to accessory cells and was present in the cytosol of ionocytes close to, cystic fibrosis transmembrane conductance regulator (CFTR) in the apical membrane and sodium, potassium, 2 chloride cotransporter (NKCC) in basolateral membrane...
May 18, 2017: Biology Open
https://www.readbyqxmd.com/read/28504466/nepetoidin-b-a-natural-product-inhibits-lps-stimulated-nitric-oxide-production-via-modulation-of-inos-mediated-by-nf-%C3%AE%C2%BAb-mkp-5-pathways
#3
Xiaxia Wu, Hongwei Gao, Wen Sun, Jie Yu, Hao Hu, Qiongming Xu, Xiuping Chen
Previous reports showed that nepetoidin B (NTB), a natural product isolated from many herbs, has anti-fungal and anti-bacterial effects. In this study, the antiinflammatory effect of NTB was investigated in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. The cytotoxic effect of NTB and LPS was determined by MTT assay. The nitric oxide (NO) production was detected by Griess assay. The TNF-α and IL-6 levels were determined by enzyme-linked immunosorbent assay kits. Protein expressions were tested by western blotting...
May 15, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28497795/a-simple-optogenetic-mapk-inhibitor-design-reveals-resonance-between-transcription-regulating-circuitry-and-temporally-encoded-inputs
#4
Raquel M Melero-Fernandez de Mera, Li-Li Li, Arkadiusz Popinigis, Katryna Cisek, Minna Tuittila, Leena Yadav, Andrius Serva, Michael J Courtney
Engineering light-sensitive protein regulators has been a tremendous multidisciplinary challenge. Optogenetic regulators of MAPKs, central nodes of cellular regulation, have not previously been described. Here we present OptoJNKi, a light-regulated JNK inhibitor based on the AsLOV2 light-sensor domain using the ubiquitous FMN chromophore. OptoJNKi gene-transfer allows optogenetic applications, whereas protein delivery allows optopharmacology. Development of OptoJNKi suggests a design principle for other optically regulated inhibitors...
May 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28497370/igf2bp1-a-novel-binding-protein-of-p38-mapk
#5
Jacob Rini, Moorthy Anbalagan
Signal transduction pathways control various biological processes in cells leading to distinct cellular functions. Protein-protein interactions and post-translational modifications are the physiological events that occur in signaling pathway. p38 MAPK are known to be involved in regulating wide range of cellular processes by interacting and activating relevant signaling molecules by means of phosphorylation. Deregulation of p38 MAPK is associated with various pathological conditions. In order to get an insight into the role played by p38 MAPK in cellular signaling, studies were carried out to identify proteins that interact with p38 MAPK...
May 11, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28492141/procaine-inhibits-proliferation-and-migration-of-colon-cancer-cells-through-inactivation-of-the-erk-mapk-fak-pathways-by-regulation-of-rhoa
#6
Chang Li, Shuohui Gao, Xiaoping Li, Chang Li, Lianjun Ma
Colon cancer is one of the lethal varieties of cancer. Chemotherapy remains to be one of the principal treatment approaches for colon cancer. Anticancer activity of procaine (PCA), which is a local anesthetic drug, has been explored in different studies. In our study, we aimed to explore the anticancer effect of PCA on colon cancer and its underlying mechanism. The results showed that PCA significantly inhibited cell viability, increased the percentage of apoptotic cells and decreased the expression level of RhoA in HCT116 cells in a dose dependent manner (P<0...
May 11, 2017: Oncology Research
https://www.readbyqxmd.com/read/28485325/lipopolysaccharide-stimulates-surfactant-protein-a-in-human-renal-epithelial-hk-2-cells-through-upregulating-toll-like-receptor-4-dependent-mek1-2-erk1-2-nf-%C3%AE%C2%BAb-pathway
#7
Jiao Liu, Guang Li, Wen-Jie Xie, Lu Wang, Rui Zhang, Ke-Sheng Huang, Qing-Shan Zhou, De-Chang Chen
BACKGROUND: Surfactant protein-A (SP-A) contributes to the regulation of sepsis-induced acute kidney injury. In a previous study, we demonstrated that the expression of SP-A in the human renal tubular epithelial (HK-2) cells can be stimulated by lipopolysaccharide (LPS). The present study evaluated the possible signal-transducing mechanisms of LPS-induced SP-A biosynthesis in the HK-2 cells. METHODS: Tetrazolium salt colorimetry (MTT) assay was used to detect cell viability of HK-2 cells after LPS stimulation on different time points...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28481232/quercetin-from-polygonum-capitatum-protects-against-gastric-inflammation-and-apoptosis-associated-with-helicobacter-pylori-infection-by-affecting-the-levels-of-p38mapk-bcl-2-and-bax
#8
Shu Zhang, Jian Huang, Xiaoqin Xie, Yun He, Fei Mo, Zhaoxun Luo
Helicobacter pylori-associated gastritis is a major threat to public health and Polygonum capitatum (PC) may have beneficial effects on the disease. However, the molecular mechanism remains unknown. Quercetin was isolated from PC and found to be a main bioactive compound. The effects of quercetin on human gastric cancer cells GES-1 were determined by xCELLigence. H. pylori-infected mouse models were established. All mice were divided into three groups: control (CG, healthy mice), model (MG, H. pylori infection) and quercetin (QG, mouse model treated by quercetin) groups...
May 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28479222/effects-of-a-spleen-tyrosine-kinase-inhibitor-on-progression-of-the-lupus-nephritis-in-mice
#9
Maki Kitai, Noboru Fukuda, Takahiro Ueno, Morito Endo, Takashi Maruyama, Masanori Abe, Kazuyoshi Okada, Masayoshi Soma, Koichi Matsumoto
The Fc receptors (FcR) have pivotal roles in the pathogenesis of the autoimmune glomerulonephritis. We therefore investigated the effects of a Syk inhibitor on the progression of lupus nephritis and SH3 domain binding protein 2 and p38MAP kinase signalings in mice. NZB/W F1 mice, a model of lupus nephritis, received a Syk inhibitor R406. Western blotting and immunohistochemistry revealed that R406 treatment significantly delayed the appearance of proteinuria, histologically improved their glomerulosclerosis and inhibited the increased the expression of MCP-1 and TGF-β1 mRNAs and the nephrin and podocin proteins in the kidney...
March 25, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28474064/-effect-of-lipopolysaccharides-from-porphyromonas-endodontalis-on-the-expression-of-interleukin-34-in-mouse-osteoblasts
#10
Ya-Qiong Yu, Jia-Jie Guo, Li-Hong Qiu, Xiao-Lin Li, Di Yang, Yan Guo
PURPOSE: To investigate the effects of lipopolysaccharides (LPS) extracted from Porphyromonas endodontalis (P.e) on the expression of interleukin-34 (IL-34) mRNA in MC3T3-E1 cells and the role of p38MAPK, ERK1/2, NF-κB and SIRT1 in the process. METHODS: MC3T3-E1 cells were treated with different concentrations of P.e-LPS(0-50 mg/L) and 20 mg/L P.e-LPS for different time (0-24 h). The expression of IL-34 mRNA was detected by real-time reverse transcription-polymerase chain reaction (real time RT-PCR)...
February 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28474063/-effect-of-resveratrol-on-expression-of-tlr4-and-inflammatory-factors-in-gingival-epithelial-cells-under-high-glucose-environment
#11
Jia-Shu Lv, Xue-Wei Jiang, Yan Zhang, Lei Zhen
PURPOSE: Through a study of the molecular mechanism of the effect of resveratrol(RSV) on expression of TLR4 and inflammatory factors in gingival epithelial cells under high glucose environment, the therapeutic effect and molecular mechanism of resveratrol on periodontitis in patients with diabetes mellitus was investigated. METHODS: Gingival epithelial cells were cultured in vitro; according to the way of action, the cultured cells were divided into control group, high glucose group(HG) and HG+RSV group...
February 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28469797/downregulation-of-p38-phosphorylation-correlates-with-low-grade-differentiation-and-proliferation-of-lung-squamous-cell-carcinoma
#12
Yandong Nan, Ruijing Chang, Hua Jiang, Shuanying Yang, Faguang Jin, Yonghong Xie
BACKGROUND: P38MAPK has been investigated as a tumor-related signaling molecule because of its apparent association with tumorigenesis. This study aimed to investigate P38MAPK expression and its role in lung squamous carcinoma (LSCC). METHODS: The expression of P38MAPK and phosphorylated P38 (P-P38) in LSCC tissues and cells was examined by Western blot, real-time PCR, and immunohistochemistry. The influence of P38MAPK inhibitor SB203580 on the proliferation of LSCC cells was detected by MTT and flow cytometry...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28467798/mechanism-of-oxidative-stress-p38mapk-sgk1-signaling-axis-in-experimental-autoimmune-encephalomyelitis-eae
#13
Liang Wang, Bin Li, Mo-Yuan Quan, Lin Li, Yuan Chen, Guo-Jun Tan, Jing Zhang, Xiao-Peng Liu, Li Guo
BACKGROUND: Multiple sclerosis (MS), a complex disease associated with multifocal demyelination of the central nervous system and poorly understood etiology. It has been previously indicated that many factors, including oxidative stress and p38MAPK-SGK1 pathway, contribute to the pathogenesis of MS. METHODS: This study, using an experimental autoimmune encephalomyelitis (EAE) model system, was aimed at investigating the molecular mechanisms determining interaction p38MAPK-SGK1 pathway and oxidative stress in MS pathogenesis...
April 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28467788/sphingosine-kinase-2-inhibition-synergises-with-bortezomib-to-target-myeloma-by-enhancing-endoplasmic-reticulum-stress
#14
Craig T Wallington-Beddoe, Melissa K Bennett, Kate Vandyke, Lorena Davies, Julia R Zebol, Paul A B Moretti, Melissa R Pitman, Duncan R Hewett, Andrew C W Zannettino, Stuart M Pitson
The proteasome inhibitor bortezomib has proven to be invaluable in the treatment of myeloma. By exploiting the inherent high immunoglobulin protein production of malignant plasma cells, bortezomib induces endoplasmic reticulum (ER) stress and the unfolded protein response (UPR), resulting in myeloma cell death. In most cases, however, the disease remains incurable highlighting the need for new therapeutic targets. Sphingosine kinase 2 (SK2) has been proposed as one such therapeutic target for myeloma. Our observations that bortezomib and SK2 inhibitors independently elicited induction of ER stress and the UPR prompted us to examine potential synergy between these agents in myeloma...
April 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454101/mir-146a-negatively-regulates-dectin-1-induced-inflammatory-responses
#15
Leilei Du, Xu Chen, Zhimin Duan, Caixia Liu, Rong Zeng, Qing Chen, Min Li
Dectin-1 is the critical sensor for β-glucan from Candida which is the most common human fungal pathogen and cause superficial and system infection. MicroRNAs (miRNAs) play crucial roles in regulating innate immunity. However, the functional role of miRNAs in inflammatory response dependent on the activation of dectin-1 pathway has not been defined. In the present study, we found insoluble β-glucan from the cell wall of Candida albicans (CaIG) was able to increase the production of of IL-6 and TNFα through Dectin-1-Syk-NF-κB and p38MAPK pathway...
April 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28450824/identification-of-novel-biomarker-and-therapeutic-target-candidates-for-acute-intracerebral-hemorrhage-by-quantitative-plasma-proteomics
#16
Guo-Chun Li, Lina Zhang, Ming Yu, Haiyu Jia, Ting Tian, Junqin Wang, Fuqiang Wang, Ling Zhou
BACKGROUND: The systematic mechanisms of acute intracerebral hemorrhage are still unknown and unverified, although many recent researches have indicated the secondary insults. This study was aimed to disclose the pathological mechanism and identify novel biomarker and therapeutic target candidates by plasma proteome. METHODS: Patients with AICH (n = 8) who demographically matched healthy controls (n = 4) were prospectively enrolled, and their plasma samples were obtained...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28443465/bauerenol-a-triterpenoid-from-indian-suregada-angustifolia-induces-reactive-oxygen-species-mediated-p38mapk-activation-and-apoptosis-in-human-hepatocellular-carcinoma-hepg2-cells
#17
Perumal Sathish Kumar, Madepalli Byrappa Gowdu Viswanathan, Muthappan Venkatesan, Kedike Balakrishna
The triterpenoid, bauerenol, from Suregada angustifolia (Baill. ex Muell.-Arg.) Airy Shaw (Euphorbiaceae) was screened for anti-cancer property using hepatocellular carcinoma cell line, HepG2. Bauerenol exhibited growth inhibitory and apoptosis inducing potential against HepG2 cancer cells. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide cytotoxic assay revealed that bauerenol treatment significantly reduced the growth of HepG2 cells in a time- and dose-dependent manner with 50% growth inhibitory concentration doses of 45 and 25 µg/mL at 24 and 48 h treatments, respectively...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28441795/yji-7-suppresses-ros-production-and-expression-of-inflammatory-mediators-via-modulation-of-p38mapk-and-jnk-signaling-in-raw-264-7-macrophages
#18
Hye Jin Oh, Til Bahadur Thapa Magar, Nirmala Tilija Pun, Yunji Lee, Eun Hye Kim, Eung-Seok Lee, Pil-Hoon Park
Chalcone, (2E)-1,3-Diphenylprop-2-en-1-one, and its synthetic derivatives are known to possess anti-oxidative and anti-inflammatory properties. In the present study, we prepared a novel synthetic chalcone compound, (E)-1-(4-hydroxyphenyl)-3-(2-(trifluoromethoxy)phenyl)prop-2-en-1-one name (YJI-7), and investigated its inhibitory effects on endotoxin-stimulated production of reactive oxygen species (ROS) and expression of inflammatory mediators in macrophages. We demonstrated that treatment of RAW 264.7 macrophages with YJI-7 significantly suppressed lipopolysaccharide (LPS)-stimulated ROS production...
April 6, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/28428059/the-decreased-growth-performance-and-impaired-immune-function-and-structural-integrity-by-dietary-iron-deficiency-or-excess-are-associated-with-tor-nf-%C3%AE%C2%BAb-p38mapk-nrf2-and-mlck-signaling-in-head-kidney-spleen-and-skin-of-grass-carp-ctenopharyngodon-idella
#19
Yan-Lin Guo, Wei-Dan Jiang, Pei Wu, Yang Liu, Xiao-Qiu Zhou, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Lin Feng
This study was conducted to investigate the effects of dietary iron on the growth, and immune function and structural integrity in head kidney, spleen and skin as well as the underlying signaling of young grass carp (Ctenopharyngodon idella). Total 630 grass carp (242.32 ± 0.58 g) were fed diets containing graded levels of iron at 12.15 (basal diet), 35.38, 63.47, 86.43, 111.09, 136.37 mg/kg (diets 2-6 were added with ferrous fumarate) and 73.50 mg/kg (diet 7 was added with ferrous sulfate) diet for 60 days...
April 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28427134/-role-of-bone-marrow-tyrosine-kinase-on-chromosome-x-in-the-production-of-pro-inflammatory-cytokines-from-mouse-mononuclear-macrophages-raw264-7-induced-by-endotoxin-lipopolysaccharide-and-its-mechanism
#20
X Fang, Y Hu, Y Wang, S Liu, F Wang, X L Chen
Objective: To investigate the role of bone marrow tyrosine kinase on chromosome X (BMX) in the production of tumor necrosis factor α (TNF-α) and interleukin-1β (IL-1β) from mouse mononuclear-macrophages induced by endotoxin/lipopolysaccharide (LPS) and its related mechanism. Methods: Mouse mononuclear-macrophages RAW264.7 were inoculated in 6-well plates and routinely cultured for the following experiments. (1) Cells were collected and divided into blank control group, LPS control group, and 75, 750, 7 500, 75 000 nmol/L BMX-IN-1 pretreatment groups according to the random number table, with 8 wells in each group...
April 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
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