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https://www.readbyqxmd.com/read/28095306/the-role-of-pten-in-regulation-of-hepatic-macrophages-activation-and-function-in-progression-and-reversal-of-liver-fibrosis
#1
Yahui Cheng, Yuanyao Tian, Jialu Xia, Xiaoqin Wu, Yang Yang, Xiaofeng Li, Cheng Huang, Xiaoming Meng, Taotao Ma, Jun Li
Activation of Kupffer cells (KCs) plays a pivotal role in the pathogenesis of liver fibrosis. The progression and reversal of CCl4-induced mouse liver fibrosis showed a mixed induction of hepatic classical (M1) and alternative (M2) macrophage markers. Although the role of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) in modulating myeloid cell activation has recently been identified, its function in macrophage activation during hepatic fibrosis remains to be fully appreciated. In our study, PTEN expression of KCs was remarkably decreased in CCl4-induced mice but increased to a near-normal level in reversed mice...
January 14, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28093225/il-4r-suppresses-airway-inflammation-in-bronchial-asthma-by-inhibiting-the-il-4-stat6-pathway
#2
Ying Liu, Hui Zhang, Ran Ni, Wen-Qing Jia, Yuan-Yuan Wang
OBJECTIVE: This study aims to explore the mechanisms of how IL-4R suppresses airway inflammation in bronchial asthma by inhibiting the IL-4/STAT6 pathway. METHODS: A total of 27 BALB/c male mice were selected and divided into control, asthma and IL-4R groups. Ovalbumin-induced mouse asthma model was established. Maximal pulmonary resistance was recorded. Hematoxylin and eosin (HE) and periodic acid Schiff (PAS) staining were conducted to observe the pathological changes in lung tissue...
January 13, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28072477/recurrent-nab2-stat6-gene-fusions-and-estrogen-receptor-alpha-expression-in-pulmonary-adenofibromas
#3
Nicola Fusco, Elena Guerini-Rocco, Claudia Augello, Andrea Terrasi, Giulia Ercoli, Caterina Fumagalli, Davide Vacirca, Paola Braidotti, Antonina Parafioriti, Marta Jaconi, Letterio Runza, Vijayalakshmi Ananthanarayanan, Fabio Pagni, Silvano Bosari, Massimo Barberis, Stefano Ferrero
AIMS: Pulmonary adenofibromas are rare benign fibroepithelial tumours of the lung with unknown histogenesis and an indolent clinical behaviour. Their stroma resembles that of solitary fibrous tumours, while the glands are composed of respiratory epithelium organized in a phyllodes-like architecture. Differentiation of pulmonary adenofibromas from other more aggressive intrathoracic tumours is clinically relevant. However, their biology is unknown. Here, we sought to characterize pulmonary adenofibromas at a clinicopathologic level and to define whether they could be underpinned by a highly recurrent somatic genetic alteration akin to tumours with similar morphology...
January 10, 2017: Histopathology
https://www.readbyqxmd.com/read/28064224/influence-of-il13-on-periostin-secretion-by-synoviocytes-in-osteoarthritis
#4
Tatsuya Moue, Yutaro Tajika, Shintaro Ishikawa, Yasuaki Kanada, Takayuki Okumo, Kazuhito Asano, Tadashi Hisamitsu
BACKGROUND: Our previous research provided evidence of periostin increase in parallel with interleukin-13 (IL13) increase in the synovial fluid of patients with osteoarthritis (OA). The reaction cascade from IL13 to periostin, however, remains unidentified. We, therefore, tested the hypothesis that periostin secretion is affected downstream of IL13. MATERIALS AND METHODS: OA synoviocytes were cultured under different concentrations of IL13. Periostin content in culture supernatants and the level of signal transducer and activator of transcription 6 (STAT6) in the cultured cells were measured using enzyme-linked immunosorbent assay (ELISA)...
January 2017: In Vivo
https://www.readbyqxmd.com/read/28045028/chlorogenic-acid-inhibits-glioblastoma-growth-through-repolarizating-macrophage-from-m2-to-m1-phenotype
#5
Nina Xue, Qin Zhou, Ming Ji, Jing Jin, Fangfang Lai, Ju Chen, Mengtian Zhang, Jing Jia, Huarong Yang, Jie Zhang, Wenbin Li, Jiandong Jiang, Xiaoguang Chen
Glioblastoma is an aggressive tumor that is associated with distinctive infiltrating microglia/macrophages populations. Previous studies demonstrated that chlorogenic acid (5-caffeoylquinic acid, CHA), a phenolic compound with low molecular weight, has an anti-tumor effect in multiple malignant tumors. In the present study, we focused on the macrophage polarization to investigate the molecular mechanisms behind the anti-glioma response of CHA in vitro and in vivo. We found that CHA treatment increased the expression of M1 markers induced by LPS/IFNγ, including iNOS, MHC II (I-A/I-E subregions) and CD11c, and reduced the expression of M2 markers Arg and CD206 induced by IL-4, resulting in promoting the production of apoptotic-like cancer cells and inhibiting the growth of tumor cells by co-culture experiments...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28035546/disequilibrium-in-the-cd8-cd28-cd8-cd28-t-lymphocyte-balance-is-related-to-prognosis-in-rats-with-trinitrobenzenesulfonic-acid-induced-colitis
#6
Shixue Dai, Hongxiang Gu, Qianyi Lin, Tiaosi Xing, Minhua Chen, Tao Zhong, Gang Wu, Yanling Feng, Hongbo Liu, Yong Gao, Hongjian Jian, Minhai Zhang, Hongmei Mo, Huanjie Zhu, Dongsheng Chen, Jun Xu, Ying Zou, Honggang Chi, Yuzhen Zhu
PURPOSE: The CD8(+)CD28(+)/CD8(+)CD28(-) T lymphocyte balance is vital for human ulcerative colitis (UC) but has not been defined in experimental colitis. This investigation will try to identify the changes that occur in the CD8(+)CD28(+)/CD8(+)CD28(-) T lymphocyte balance during the progression of trinitrobenzenesulfonic acid (TNBS)-induced colitis in rats. METHODS: The frequencies of blood CD8(+)CD28(+) and CD8(+)CD28(-) T lymphocytes were detected in the rats belonging to the normal, model, and treated groups on five days using flow cytometry...
December 29, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28032600/the-function-of-cancer-shed-gangliosides-in-macrophage-phenotype-involvement-with-angiogenesis
#7
Tae-Wook Chung, Hee-Jung Choi, Mi-Ju Park, Hee-Jin Choi, Syng-Ook Lee, Keuk-Jun Kim, Cheorl-Ho Kim, Changwan Hong, Kyun-Ha Kim, Myungsoo Joo, Ki-Tae Ha
Tumor-derived gangliosides in the tumor microenvironment are involved in the malignant progression of cancer. However, the molecular mechanisms underlying the effects of gangliosides shed from tumors on macrophage phenotype remain unknown. Here, we showed that ganglioside GM1 highly induced the activity and expression of arginase-1 (Arg-1), a major M2 macrophage marker, compared to various gangliosides in bone marrow-derived macrophages (BMDM), peritoneal macrophages and Raw264.7 macrophage cells. We found that GM1 bound to macrophage mannose receptor (MMR/CD206) and common gamma chain (γc)...
December 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/28003382/mek1-2-inhibition-promotes-macrophage-reparative-properties
#8
Matthew E Long, William E Eddy, Ke-Qin Gong, Lara L Lovelace-Macon, Ryan S McMahan, Jean Charron, W Conrad Liles, Anne M Manicone
Macrophages have important functional roles in regulating the timely promotion and resolution of inflammation. Although many of the intracellular signaling pathways involved in the proinflammatory responses of macrophages are well characterized, the components that regulate macrophage reparative properties are less well understood. We identified the MEK1/2 pathway as a key regulator of macrophage reparative properties. Pharmacological inhibition of the MEK1/2 pathway by a MEK1/2 inhibitor (MEKi) significantly increased expression of IL-4/IL-13 (M2)-responsive genes in murine bone marrow-derived and alveolar macrophages...
January 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27981377/myrrh-exerts-barrier-stabilising-and-protective-effects-in-ht-29-b6-and-caco-2-intestinal-epithelial-cells
#9
Rita Rosenthal, Julia Luettig, Nina A Hering, Susanne M Krug, Uwe Albrecht, Michael Fromm, Jörg-Dieter Schulzke
PURPOSE: Myrrh, the oleo-gum resin of Commiphora molmol, is well known for its anti-inflammatory properties. In different animal models, it protected against DSS-, TNBS- and oxazolone-induced colitis. To date, no information concerning the effect of myrrh on barrier properties are available. Thus, this study investigates the effect of myrrh on paracellular barrier function in the absence or presence of the pro-inflammatory cytokine TNFα. METHODS: Monolayers of human colon cell lines HT-29/B6 and Caco-2 were incubated with myrrh under control conditions or after challenge with the pro-inflammatory cytokine TNFα...
December 15, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/27956529/cutting-edge-helminth-coinfection-blocks-effector-differentiation-of-cd8-t-cells-through-alternate-host-th2-and-il-10-mediated-responses
#10
Andrew Marple, Wenhui Wu, Suhagi Shah, Yanlin Zhao, Peicheng Du, William C Gause, George S Yap
Concurrent helminth infection potently inhibits T cell immunity; however, whether helminthes prevent T cell priming or skew clonal recruitment and effector differentiation is not known. Using coinfection with two natural mouse pathogens, Heligsomosoides polygyrus and Toxoplasma gondii, to investigate the negative impact of helminthes on the CD8 T cell response, we demonstrate helminth-induced suppression of IL-12-dependent differentiation of killer-like receptor G1(+) effector CD8 T cells and IFN-γ production...
January 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27942004/stat6-and-stat1-pathway-activation-in-circulating-lymphocytes-and-monocytes-as-predictor-of-treatment-response-in-rheumatoid-arthritis
#11
Krista Kuuliala, Antti Kuuliala, Riitta Koivuniemi, Hannu Kautiainen, Heikki Repo, Marjatta Leirisalo-Repo
OBJECTIVE: To find novel predictors of treatment response to disease-modifying antirheumatic drugs (DMARDs), we studied activation of STAT (signal transducers and activators of transcription) 6 and 1 in circulating leukocytes of patients with rheumatoid arthritis (RA). METHODS: 19 patients with untreated recent-onset RA, 16 patients with chronic RA irresponsive to synthetic DMARDs and 37 healthy volunteers provided blood samples for whole blood flow cytometric determination of intracellular STAT6 and STAT1 phosphorylation, expressed as relative fluorescence units, in response to IL-4 and IFN-γ, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/27932984/curcumin-suppressed-activation-of-dendritic-cells-via-jak-stat-socs-signal-in-mice-with-experimental-colitis
#12
Hai-Mei Zhao, Rong Xu, Xiao-Ying Huang, Shao-Min Cheng, Min-Fang Huang, Hai-Yang Yue, Xin Wang, Yong Zou, Ai-Ping Lu, Duan-Yong Liu
Dendritic cells (DCs) play a pivotal role as initiators in the pathogenesis of inflammatory bowel disease and are regulated by the JAK/STAT/SOCS signaling pathway. As a potent anti-inflammatory compound, curcumin represents a viable treatment alternative or adjunctive therapy in the management of chronic inflammatory bowel disease (IBD). The mechanism of curcumin treated IBD on DCs is not completely understood. In the present study, we explored the mechanism of curcumin treated experimental colitis by observing activation of DCs via JAK/STAT/SOCS signaling pathway in colitis mice...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27913199/the-involvement-of-m2-macrophage-polarization-inhibition-in-fenretinide-mediated-chemopreventive-effects-on-colon-cancer
#13
Rong Dong, Yanling Gong, Wen Meng, Meng Yuan, Hong Zhu, Meidan Ying, Qiaojun He, Ji Cao, Bo Yang
Clinical studies have shown that fenretinide (4-HPR) is an attractive chemopreventive agent for cancer treatment. However, to date, few studies have demonstrated the mechanism of the preventive effect of 4-HPR. In our current study, we revealed that 4-HPR could significantly suppress IL-4/IL-13 induced M2-like polarization of macrophages, which was demonstrated by the reduced expression of M2 surface markers, the down-regulation of M2 marker genes, and the inhibition of M2-like macrophages promoted angiogenesis...
November 30, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27906181/stat6-deficiency-ameliorates-graves-disease-severity-by-suppressing-thyroid-epithelial-cell-hyperplasia
#14
Xuechao Jiang, Bingbing Zha, Xiaoming Liu, Ronghua Liu, Jun Liu, Enyu Huang, Tingting Qian, Jiajing Liu, Zhiming Wang, Dan Zhang, Luman Wang, Yiwei Chu
Signal transducer and activator of transcription 6 (STAT6) is involved in epithelial cell growth. However, little is known regarding the STAT6 phosphorylation status in Graves' disease (GD) and its role in thyroid epithelial cells (TECs). In this study, we found that STAT6 phosphorylation (p-STAT6) was significantly increased in TECs from both GD patients and experimental autoimmune Graves' disease mice and that STAT6 deficiency ameliorated GD symptoms. Autocrine IL-4 signalling in TECs activated the phosphorylation of STAT6 via IL-4 R engagement, and the downstream targets of STAT6 were Bcl-xL and cyclin D1...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27899095/effects-of-the-ayurved-siriraj-wattana-recipe-on-functional-and-phenotypic-characterization-of-cytokine-induced-killer-cells-and-dendritic-cells-in-vitro
#15
Adisak Wongkajornsilp, Nuntarak Numchaisermsuk, Khanit Sa-Ngiamsuntorn, Pravit Akarasereenont, Valla Wamanuttajinda, Kanda Kasetsinsombat, Sunisa Duangsa-Ard, Tawee Laohapan, Kittipong Maneechotesuwan
BACKGROUND: Ayurved Siriraj Wattana recipe (AVS073), has been prescribed as tonic, to increase appetite, and for pain relief. It also exhibits antioxidant, anti-inflammatory, immunomodulating and anti-cancer activities. However, the immunomodulatory effects on antigen-presenting cells and effector T cells remained elusive. We thus aimed to study the effects of AVS073 on differentiation, maturation, functions and proportions of CIK cells and monocyte-derived DCs. METHODS: CIK cells and monocyte-derived DCs were treated with AVS073, followed by the assessment of T-helper (Th) phenotypes using real-time RT-PCR and flow cytometry...
November 29, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27895317/il-4-a-direct-target-of-mir-340-429-is-involved-in-radiation-induced-aggressive-tumor-behavior-in-human-carcinoma-cells
#16
Eun Sook Kim, Young Eun Choi, Su Jin Hwang, Young-Hoon Han, Myung-Jin Park, In Hwa Bae
Radiotherapy induces the production of cytokines, thereby increasing aggressive tumor behavior. This radiation effect results in the failure of radiotherapy and increases the mortality rate in patients. We found that interleukin-4 (IL-4) and IL-4Rα (IL-4 receptor) are highly expressed in various human cancer cells subsequent to radiation treatment. In addition, IL-4 is highly overexpressed in metastatic carcinoma tissues compared with infiltrating carcinoma tissues. High expression of IL-4 in patients with cancer is strongly correlated with poor survival...
November 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27865862/impaired-mucus-clearance-exacerbates-allergen-induced-type-2-airway-inflammation-in-juvenile-mice
#17
Benedikt Fritzsching, Matthias Hagner, Lu Dai, Sandra Christochowitz, Raman Agrawal, Charlotte van Bodegom, Simone Schmidt, Jolanthe Schatterny, Stephanie Hirtz, Ryan Brown, Michelle Goritzka, Julia Duerr, Zhe Zhou-Suckow, Marcus A Mall
BACKGROUND: Type 2 airway inflammation plays a central role in the pathogenesis of allergen-induced asthma, but the underlying mechanisms remain poorly understood. Recently, we demonstrated that reduced mucociliary clearance, a characteristic feature of asthma, produces spontaneous type 2 airway inflammation in juvenile β-epithelial Na(+) channel (Scnn1b)-transgenic (Tg) mice. OBJECTIVE: We sought to determine the role of impaired mucus clearance in the pathogenesis of allergen-induced type 2 airway inflammation and identify cellular sources of the signature cytokine IL-13...
November 16, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27861999/forkhead-box-protein-3-foxp3-producing-dendritic-cells-suppress-allergic-response
#18
Xiao-Yu Liu, Ling-Zhi Xu, Xiang-Qian Luo, Xiao-Rui Geng, Zhi-Qiang Liu, Li-Teng Yang, Gui Yang, Si Chen, Zhi-Gang Liu, Hua-Bin Li, Li-Tao Yang, Tian-Gang Luan, Ping-Chang Yang
BACKGROUND: The generation of the tolerogenic dendritic cells (DC) is not fully understood yet. Forkhead box protein-3 (Foxp3) is an important molecule in the immune tolerance. This study tests a hypothesis that DCs express Foxp3, which can be up regulated by Staphylococcal enterotoxin B (SEB). METHODS: The expression of Foxp3 by DCs was evaluated by real time RT-PCR, Western blotting, flow cytometry and chromatin immunoprecipitation assay. RESULTS: We observed that mice treated with SEB at 0...
November 15, 2016: Allergy
https://www.readbyqxmd.com/read/27858144/th9-and-other-il-9-producing-cells-in-allergic-asthma
#19
REVIEW
Sonja Koch, Nina Sopel, Susetta Finotto
Allergic asthma is a worldwide increasing chronic disease of the airways which affects more than 300 million people. It is associated with increased IgE, mast cell activation, airway hyperresponsiveness (AHR), mucus overproduction and remodeling of the airways. Previously, this pathological trait has been associated with T helper type 2 (Th2) cells. Recently, different CD4(+) T cell subsets (Th17, Th9) as well as cells of innate immunity, like mast cells and innate lymphoid cells type 2 (ILC2s), which are all capable of producing the rediscovered cytokine IL-9, are known to contribute to this disease...
November 17, 2016: Seminars in Immunopathology
https://www.readbyqxmd.com/read/27848951/genetic-deletion-of-the-bacterial-sensor-nod2-improves-murine-crohn-s-disease-like-ileitis-independent-of-functional-dysbiosis
#20
D Corridoni, A Rodriguez-Palacios, G Di Stefano, L Di Martino, D A Antonopoulos, E B Chang, K O Arseneau, T T Pizarro, F Cominelli
Although genetic polymorphisms in NOD2 (nucleotide-binding oligomerization domain-containing 2) have been associated with the pathogenesis of Crohn's disease (CD), little is known regarding the role of wild-type (WT) NOD2 in the gut. To date, most murine studies addressing the role of WT Nod2 have been conducted using healthy (ileitis/colitis-free) mouse strains. Here, we evaluated the effects of Nod2 deletion in a murine model of spontaneous ileitis, i.e., the SAMP1Yit/Fc (SAMP) strain, which closely resembles CD...
November 16, 2016: Mucosal Immunology
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