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https://www.readbyqxmd.com/read/29135371/follistatin-like-protein-1-upregulates-dendritic-cell-based-immunity-in-patients-with-nasopharyngeal-carcinoma
#1
Hong Wang, Shiping Huang, Senyong Wu, Shaolin Yin, Anzhou Tang, Wensheng Wen
Follistatin-like protein-1 (FSTL1) is an inflammatory factor that can induce an inflammatory response and is expressed in cancers. However, little is known about its content and function in nasopharyngeal carcinoma (NPC). Interleukin (IL)-12 and IL-4 are primarily secreted by dendritic cells (DCs) and activated T lymphocytes, respectively; these factors can induce Th cell differentiation and cytotoxic lymphocyte production, both of which facilitate tumors through the STAT4 and STAT6 pathways, respectively. In this study, the relationship between FSTL1 and both IL-12 and IL-4 as well as the functional mechanism of these cytokines was explored...
November 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29128369/inhibition-of-poly-adp-ribose-polymerase-1-alters-expression-of-mitochondria-related-genes-in-pc12-cells-relevance-to-mitochondrial-homeostasis-in-neurodegenerative-disorders
#2
Grzegorz A Czapski, Magdalena Cieślik, Przemysław L Wencel, Sylwia Wójtowicz, Robert P Strosznajder, Joanna B Strosznajder
Alzheimer's disease (AD) is characterized by the release of amyloid beta peptides (Aβ) in the form of monomers/oligomers which may lead to oxidative stress, mitochondria dysfunction, synaptic loss, neuroinflammation and, in consequence, to overactivation of poly(ADP-ribose) polymerase-1 (PARP-1). However, Aβ peptides are also released in the brain ischemia, traumatic injury and in inflammatory response. PARP-1 is suggested to be a promising target in therapy of neurodegenerative disorders. We investigated the impact of PARP-1 inhibition on transcription of mitochondria-related genes in PC12 cells...
November 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29126764/stat5a-and-stat6-gene-expression-levels-in-multiple-sclerosis-patients
#3
Mahsa Hatami, Tayyebali Salmani, Shahram Arsang-Jang, Mir Davood Omrani, Mehrdokht Mazdeh, Soudeh Ghafouri-Fard, Arezou Sayad, Mohammad Taheri
Multiple sclerosis (MS) is a complex inflammatory, autoimmune disease of the central nervous system (CNS). The disease pathogenesis is not well defined yet. Cytokines have an important role in inflammation as characteristic feature of the disease. Janus kinase/signal transducers and activators of transcriptions (JAK/STAT) family promote cytokine-mediated cell activation. Failure in the JAK/STAT signaling pathway is associated with the pathological outcome in MS. In this study, we compared the expression levels of STAT5a and STAT6 genes in the blood of 50 relapsing-remitting MS (RR-MS) patients and 50 healthy controls by Taqman Quantitative Real-Time PCR in patients and healthy control group...
November 7, 2017: Cytokine
https://www.readbyqxmd.com/read/29115389/renoprotective-effect-of-erythropoietin-via-modulation-of-the-stat6-mapk-nf-%C3%AE%C2%BAb-pathway-in-ischemia-reperfusion-injury-after-renal-transplantation
#4
Jinhua Zhang, Daqiang Zhao, Ning Na, Heng Li, Bin Miao, Liangqing Hong, Zhengyu Huang
Ischemia/reperfusion injury (IRI) commonly occurs in renal transplantation. Erythropoietin (EPO) exerts a protective effect in IRI. To investigate the underlying molecular mechanism, rat models of renal IRI were established and treated with EPO and/or lentivirus‑mediated EPO-siRNA, the signal transducer and activator of transcription 6 (STAT6) inhibitor AS1517499, the JNK inhibitor SP600125, the p38 mitogen-activated protein kinase (MAPK) inhibitor SB203580, and the nuclear factor (NF)-κB inhibitor lactacystin...
October 20, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29106748/solitary-fibrous-tumor-of-the-female-genital-tract-a-clinicopathologic-analysis-of-25-cases
#5
Eric J Yang, Brooke E Howitt, Christopher Dm Fletcher, Marisa R Nucci
AIMS: Solitary fibrous tumor (SFT) is an uncommon spindle cell neoplasm of fibroblastic origin, first described as a tumor of the pleura and now well established at extrapleural sites. However, SFT in the female genital tract is rare and therefore not fully characterized. MATERIAL AND RESULTS: We describe a series of 25 SFTs arising throughout the gynecologic tract, including vulva (14 cases), vagina (1), cervix (1), uterus (6), ovary (2) and fallopian tube (1)...
November 6, 2017: Histopathology
https://www.readbyqxmd.com/read/29101873/cathelicidin-wa-polarizes-e-coli-k88-induced-m1-macrophage-to-m2-like-macrophage-in-raw264-7-cells
#6
Shan Chen, Zeqing Lu, Fengqin Wang, Yizhen Wang
Immune cells - macrophages induced by E. coli K88 will lead to a pro-inflammatory response, which is important in host defense. Cathelicidin-WA (CWA) is an efficient antimicrobial peptide (AMP) and can exert immunomodulatory properties. Many studies have demonstrated that AMP can modulate cellular subsets but whether CWA can regulate macrophage polarization by transferring E. coli K88-induced M1 macrophage towards M2 one that of anti-inflammation remains unclear. In this study, E. coli K88 increased the expression of pro-inflammatory cytokines interleukin-6, interleukin-1β, tumor necrosis factor-α and chemokine CCL3 in RAW264...
November 1, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29094025/corilagin-counteracts-il-13r%C3%AE-1-signaling-pathway-in-macrophages-to-mitigate-schistosome-egg-induced-hepatic-fibrosis
#7
Yi-Qing Li, Yun-Fei Chen, Yi-Ping Dang, Yao Wang, Zhen-Zhong Shang, Qian Ma, Yu-Jie Wang, Juan Zhang, Lei Luo, Quan-Qiang Li, Lei Zhao
The IL-13Rα1 signaling pathway and M2 macrophages play crucial roles in schistosome egg-induced hepatic fibrosis via the expression of pro-fibrotic molecules. This study aims to investigate the inhibitory effect and mechanism of action of corilagin on schistosome egg-induced hepatic fibrosis via the IL-13Rα1 signaling pathway in M2 macrophages in vitro and in vivo. The mRNA and protein expression of IL-13Rα1, PPARγ, KLF4, SOCS1, STAT6, p-STAT6, and TGF-β was measured in vitro with corilagin treatment after IL-13 stimulation and in vivo corilagin treatment after effectively killing the adult schistosomes in schistosome-infected mice...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29093269/b-cell-derived-il-4-acts-on-podocytes-to-induce-proteinuria-and-foot-process-effacement
#8
Alfred Hj Kim, Jun-Jae Chung, Shreeram Akilesh, Ania Koziell, Sanjay Jain, Jeffrey B Hodgin, Mark J Miller, Thaddeus S Stappenbeck, Jeffrey H Miner, Andrey S Shaw
The efficacy of B cell depletion therapies in diseases such as nephrotic syndrome and rheumatoid arthritis suggests a broader role in B cells in human disease than previously recognized. In some of these diseases, such as the minimal change disease subtype of nephrotic syndrome, pathogenic antibodies and immune complexes are not involved. We hypothesized that B cells, activated in the kidney, might produce cytokines capable of directly inducing cell injury and proteinuria. To directly test our hypothesis, we targeted a model antigen to the kidney glomerulus and showed that transfer of antigen-specific B cells could induce glomerular injury and proteinuria...
November 2, 2017: JCI Insight
https://www.readbyqxmd.com/read/29090910/targeted-inhibition-of-the-ncoa1-stat6-protein-protein-interaction
#9
Yeongju Lee, Heeseok Yoon, Sung-Min Hwang, Min-Kyung Shin, Ji Hoon Lee, Misook Oh, Sin-Hyeog Im, Jaeyoung Song, Hyun-Suk Lim
The complex formation between transcription factors (TFs) and coactivator proteins is required for transcriptional activity, and thus disruption of aberrantly activated TF/coactivator interactions could be an attractive therapeutic strategy. However, modulation of such protein-protein interactions (PPIs) has proven challenging. Here we report a cell-permeable, proteolytically stable, stapled helical peptide directly targeting nuclear receptor coactivator 1 (NCOA1), a coactivator required for the transcriptional activity of signal transducer and activator of transcription 6 (STAT6)...
November 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29081777/hyperglycemia-aggravates-hepatic-ischemia-and-reperfusion-injury-by-inhibiting-liver-resident-macrophage-m2-polarization-via-c-ebp-homologous-protein-mediated-endoplasmic-reticulum-stress
#10
Zhuqing Rao, Jie Sun, Xiongxiong Pan, Ziyang Chen, Heliang Sun, Panpan Zhang, Mei Gao, Zhengnian Ding, Cunming Liu
Aggravated liver ischemia and reperfusion (IR) injury has been observed in hyperglycemic hosts, but its underlying mechanism remains undefined. Liver-resident macrophages (Kupffer cells, KCs) and endoplasmic reticulum (ER) stress play crucial roles in the pathogenesis of liver IR injury. In this study, we evaluated the role of ER stress in regulating KC activation and liver IR injury in a streptozotocin-induced hyperglycemic/diabetic mouse model. Compared to the control group (CON group), hyperglycemic mice exhibited a significant increase in liver injury and intrahepatic inflammation following IR...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29066614/targeting-the-stat6-pathway-in-tumor-associated-macrophages-reduces-tumor-growth-and-metastatic-niche-formation-in-breast-cancer
#11
Karin Binnemars-Postma, Ruchi Bansal, Gert Storm, Jai Prakash
Tumor-associated macrophages (TAMs) are the key effector cells in the tumor microenvironment and induce neoangiogenesis, matrix remodeling, and metastasis while suppressing the tumor immune system. These protumoral macrophages display an M2 phenotype induced by IL-4 and IL-13 cytokines. In this study, we hypothesized that the inhibition of the signal transducer and activator of transcription 6 (Stat6) pathway, a common downstream signaling pathway of IL-4 and IL-13, may be an interesting strategy by which to inhibit TAM differentiation and, thus, their protumorigenic activities...
October 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29034488/exploiting-whole-genome-sequence-data-to-fine-map-and-characterize-candidate-genes-within-a-quantitative-trait-loci-region-affecting-androstenone-on-porcine-chromosome-5
#12
M van Son, R Agarwal, M P Kent, H Grove, E Grindflek, S Lien
Male piglets are routinely castrated to eliminate boar taint. However, this treatment is undesirable, and alternative approaches, including genetic strategies to reduce boar taint, are demanded. Androstenone is one of the causative agents of boar taint, and a QTL region affecting this pheromone has previously been reported on SSC5: 22.6-24.8 Mb in Duroc. The QTL region is one of the few reported for androstenone that does not simultaneously affect levels of other sex steroids. The main objective of this study was to fine map this QTL...
October 16, 2017: Animal Genetics
https://www.readbyqxmd.com/read/29031719/macrophage-alternative-activation-confers-protection-against-lipotoxicity-induced-cell-death
#13
Lingling Dai, Prerna Bhargava, Kristopher J Stanya, Ryan K Alexander, Yae-Huei Liou, David Jacobi, Nelson H Knudsen, Alexander Hyde, Matthew R Gangl, Sihao Liu, Chih-Hao Lee
OBJECTIVE: Alternative activation (M2) of adipose tissue resident macrophage (ATM) inhibits obesity-induced metabolic inflammation. The underlying mechanisms remain unclear. Recent studies have shown that dysregulated lipid homeostasis caused by increased lipolysis in white adipose tissue (WAT) in the obese state is a trigger of inflammatory responses. We investigated the role of M2 macrophages in lipotoxicity-induced inflammation. METHODS: We used microarray experiments to profile macrophage gene expression regulated by two M2 inducers, interleukin-4 (Il-4), and peroxisome proliferator-activated receptor delta/gamma (Pparδ/Pparγ) agonists...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29022922/rankl-mediated-harmonious-dialogue-between-fetus-and-mother-guarantees-smooth-gestation-by-inducing-decidual-m2-macrophage-polarization
#14
Yu-Han Meng, Wen-Jie Zhou, Li-Ping Jin, Li-Bing Liu, Kai-Kai Chang, Jie Mei, Hui Li, Jian Wang, Da-Jin Li, Ming-Qing Li
Decidual macrophages (dMϕ) contribute to maternal-fetal tolerance. However, the mechanism of dMϕ differentiation during pregnancy is still largely unknown. Here, we report that receptor activator for nuclear factor-κ B ligand (RANKL), secreted by human embryonic trophoblasts and maternal decidual stromal cells (DSCs), polarizes dMϕ toward a M2 phenotype. This polarization is mediated through activation of Akt/signal transducer and activator of transcription 6 (STAT6) signaling, which is associated with the upregulation of histone H3 lysine-27 demethylase Jmjd3 and IRF4 in dMϕ...
October 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29022575/gefitinib-inhibits-m2-like-polarization-of-tumor-associated-macrophages-in-lewis-lung-cancer-by-targeting-the-stat6-signaling-pathway
#15
Muhammad Tariq, Jie-Qiong Zhang, Gui-Kai Liang, Qiao-Jun He, Ling Ding, Bo Yang
M2-like polarized tumor-associated macrophages (TAMs) play a pivotal role in promoting cancer cell growth, invasion, metastasis and angiogenesis. The identification of M2-like TAMs during tumor progression is an attractive approach for cancer therapy. In this study, we investigated the relevance of macrophage polarization and the antitumor effect of gefitinib in Lewis Lung cancer (LLC) in vitro and in vivo. Gefitinib at a concentration below 2.5 μmol/L did not cause significant growth inhibition on LLC and RAW 264...
November 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28986735/no2-inhalation-enhances-asthma-susceptibility-in-a-rat-model
#16
Ming Han, Xiaotong Ji, Guangke Li, Nan Sang
Nitrogen dioxide (NO2) is a major air pollutant. Epidemiologic studies have found that NO2 exposure is associated with an increased risk of asthma. Nevertheless, the potential molecular mechanisms remain unclear. In this study, we investigated the effect of NO2 inhalation on the occurrence of allergic airway inflammation and its underlying mechanisms. Firstly, male Wistar rats were exposed to 2 and 5 mg/m(3) NO2 (28 days, 5 h/day). The results showed that NO2 exposure could induce pulmonary inflammatory response, mucus formation, and Th1/Th2 imbalance in the lung of normal rats, resulting in allergic asthma-like features...
October 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28981605/osteoclast-stimulatory-transmembrane-protein-induces-a-phenotypic-switch-in-macrophage-polarization-suppressing-an-m1-pro-inflammatory-state
#17
Huimin Yuan, Jiangping He, Guangya Zhang, Dandan Zhang, Xiangxin Kong, Fengling Chen
Macrophages are the key cells in metabolic syndrome and are also a risk factor for metabolic disease. Macrophages have different functions and transcriptional profiles, but all are required for maintaining homeostasis. It is well known that macrophages play a key role in inflammation and early atherogenesis, and are present in two phenotypes: pro-inflammatory (M1) and anti-inflammatory (M2). Osteoclast stimulatory transmembrane protein (oc-stamp) is a multiple-pass transmembrane protein; however, its function remains unclear...
October 1, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28972958/immunoexpression-analysis-of-selected-jak-stat-pathway-molecules-in-non-small-cell-lung-cancer-patients
#18
Dorota Pastuszak-Lewandoska, Daria Domańska-Senderowska, Jacek Kordiak, Adam Antczak, Karolina H Czarnecka, Monika Migdalska-Sęk, Ewa Nawrot, Justyna M Kiszałkiewicz, Ewa Brzeziańska-Lasota
INTRODUCTION Signal transducer and activator of transcription (STAT) proteins are critically involved in tumorigenesis in various cancers, including lung tumors. OBJECTIVES To analyze the immunoexpression levels of three STAT proteins: STAT3, STAT5, and STAT6 in their phosphorylated forms, STAT inhibitors PIAS3 and SOCS3, and additionally COX-2, as potential diagnostic and/or prognostic markers in lung cancer. PATIENTS AND METHODS The study involved 71 patients diagnosed with non-small cell lung cancer (NSCLC)...
September 30, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28968297/solitary-fibrous-tumor-of-the-vulva-report-of-2-cases-including-a-de-novo-dedifferentiated-solitary-fibrous-tumor-diagnosed-after-molecular-demonstration-of-nab2-stat6-gene-fusion
#19
Juan C Tardío, Isidro Machado, Isabel Alemany, M Victoria López-Soto, M Gema Nieto, Antonio Llombart-Bosch
Solitary fibrous tumor (SFT) is a neoplasm of fibroblastic lineage that has been documented in almost every anatomic location. Vulval SFT is very rare with only 10 cases reported to date. We present 2 additional SFTs located in the vulva, in adult women of 59 and 25 yr of age. The first showed a classic morphology and immunophenotype with uniform and strong STAT6 nuclear expression. The other one was a spindle-cell de novo dedifferentiated SFT with heterogeneous nuclear and cytoplasmic STAT6 staining, which could only be correctly diagnosed after molecular analysis with demonstration of a NAB2-STAT6 gene fusion...
September 29, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28955044/cell-penetrating-peptide-derived-from-human-eosinophil-cationic-protein-decreases-airway-allergic-inflammation
#20
Lin-Shien Fu, Yu-Rou Wu, Shun-Lung Fang, Jaw-Ji Tsai, Heng-Kuei Lin, Yee-Jun Chen, Ting-Yu Chen, Margaret Dah-Tsyr Chang
Cell penetrating peptide derived from human eosinophil cationic protein (CPPecp) is a 10-amino-acid peptide containing a core heparan sulfate (HS)-binding motif of human eosinophil cationic protein (ECP). It binds and penetrates bronchial epithelial cells without cytotoxic effects. Here we investigated airway-protective effects of CPPecp in BEAS-2B cell line and mite-induced airway allergic inflammation in BALB/c mice. In BEAS-2B cell, CPPecp decreases ECP-induced eotaxin mRNA expression. CPPecp also decreases eotaxin secretion and p-STAT6 activation induced by ECP, as well as by IL-4...
September 27, 2017: Scientific Reports
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