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https://www.readbyqxmd.com/read/29899823/metformin-exerts-antitumor-activity-via-induction-of-multiple-death-pathways-in-tumor-cells-and-activation-of-a-protective-immune-response
#1
Felipe V Pereira, Amanda Campelo L Melo, Jun Siong Low, Íris Arantes de Castro, Tárcio T Braga, Danilo C Almeida, Ana Gabriela U Batista de Lima, Meire I Hiyane, Matheus Correa-Costa, Vinicius Andrade-Oliveira, Clarice S T Origassa, Rosana M Pereira, Susan M Kaech, Elaine G Rodrigues, Niels Olsen S Câmara
The antitumor effect of metformin has been demonstrated in several types of cancer; however, the mechanisms involved are incompletely understood. In this study, we showed that metformin acts directly on melanoma cells as well as on the tumor microenvironment, particularly in the context of the immune response. In vitro , metformin induces a complex interplay between apoptosis and autophagy in melanoma cells. The anti-metastatic activity of metformin in vivo was assessed in several mouse models challenged with B16F10 cells...
May 25, 2018: Oncotarget
https://www.readbyqxmd.com/read/29872077/mcc950-a-specific-small-molecule-inhibitor-of-nlrp3-inflammasome-attenuates-colonic-inflammation-in-spontaneous-colitis-mice
#2
Agampodi Promoda Perera, Ruchira Fernando, Tanvi Shinde, Rohit Gundamaraju, Benjamin Southam, Sukhwinder Singh Sohal, Avril A B Robertson, Kate Schroder, Dale Kunde, Rajaraman Eri
MCC950 a potent, highly specific small molecule inhibitor of canonical and noncanonical activation of NLRP3 inflammasome has been evaluated in a multitude of NLRP3 driven inflammatory diseases. However, the effect of MCC950 on colonic inflammation has not yet been reported. In the present study we investigated the effect of MCC950 in a spontaneous chronic colitis mouse model Winnie, which mimics human ulcerative colitis. Oral administration of 40 mg/kg MCC950 commencing at Winnie week seven for three weeks significantly improved body weight gain, colon length, colon weight to body weight ratio, disease activity index and histopathological scores...
June 5, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29849482/influence-of-tnf-and-il17-gene-polymorphisms-on-the-spondyloarthritis-immunopathogenesis-regardless-of-hla-b27-in-a-brazilian-population
#3
Marco A Rocha Loures, Luciana C Macedo, Denise M Reis, Camila F Oliveira, Jean L Meneguetti, Gabriela F Martines, Janisleya S F Neves, Eliana de Souza, Ana M Sell, Jeane E L Visentainer
Background and Objectives: Spondyloarthritis (SpA) represents a heterogeneous group of immune-mediated inflammatory diseases that have overlapping clinical features, genetic predisposition, and pathogenic mechanisms. Hence, we investigated, through a case-control study, whether single-nucleotide polymorphisms of TNF and IL17 genes are associated with SpA, ankylosing spondylitis (AS), and psoriatic arthritis (PsA) in a mixed Brazilian population. Methods: Genotyping of TNF -308 (rs1800629), TNF -238 (rs361525), IL17A (rs2275913), IL17F (rs763780), and HLA-B27 polymorphisms was performed in 243 patients with SpA and 210 controls from Southern Brazil using SSOP-Luminex (One Lambda) and PCR-SSP assays...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29798698/secukinumab-in-moderate-to-severe-plaque-psoriasis-a-multi-center-retrospective-real-life-study-up-to-52-weeks-observation
#4
Marco Galluzzo, Marina Talamonti, Clara De Simone, Simone D'Adamio, Gaia Moretta, Sara Tambone, Giacomo Caldarola, Maria Concetta Fargnoli, Ketty Peris, Luca Bianchi
OBJECTIVES: To evaluate efficacy and safety of the anti-IL17 drug secukinumab in a real-life large cohort of patients with moderate-to-severe plaque psoriasis (PsO) in Central Italy. METHODS: Multicenter, retrospective study with an observation period of up to 52 weeks. Efficacy was assessed by Psoriasis Area and Severity Index (PASI) score; clinical and laboratory examinations were performed at baseline and at weeks 4, 12, 24, 36, 52. RESULTS: A 90% and a 100% PASI score reduction (PASI90 and PASI100) were reported in 67...
May 25, 2018: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/29794741/identification-and-analysis-of-key-genes-associated-with-ulcerative-colitis-based-on-dna-microarray-data
#5
Ruifeng Song, Ya Li, Weiwei Hao, Bingxue Wang, Lei Yang, Feng Xu
This study aimed to identify genes that may play a role in development of ulcerative colitis (UC) and gain insight into its pathogenesis.Gene expression profiling data, including samples collected from 13 early-stage UC (EUC), 8 advanced-stage UC (AUC), and 5 control subjects, were downloaded from the Gene Expression Omnibus database under the accession number of GSE9452. Differentially expressed genes (DEGs) were identified in EUC and AUC compared with controls. DEGs for EUC and AUC, as well as AUC-specific DEGs were subjected to pathway enrichment analysis...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29788407/deregulation-of-sgk1-in-ulcerative-colitis-a-paradoxical-relationship-between-immune-cells-and-colonic-epithelial-cells
#6
Rocco Spagnuolo, Vincenzo Dattilo, Lucia D'Antona, Cristina Cosco, Rossana Tallerico, Valeria Ventura, Francesco Conforti, Caterina Camastra, Rosellina M Mancina, Giada Catalogna, Vincenzo Cosco, Rodolfo Iuliano, Ennio Carbone, Nicola Perrotti, Rosario Amato, Patrizia Doldo
Background: Inflammatory bowel disease (IBD) is due to the interaction of genetic and environmental factors that trigger an unbalanced immune response ultimately resulting in the peculiar inflammatory reaction. Experimental models of IBD point to a role of T-cell-derived cytokines (Th17) and to SGK1 as mediator of the Th17 switch. We hypothesize that SGK1, a salt inducible kinase, directs lymphocytic behavior and tissue damage. Methods: Eleven controls and 32 ulcerative colitis (UC) patients were randomized according to endoscopic Mayo score...
May 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29781547/altered-expression-of-matrix-remodeling-associated-7-mxra7-in-psoriatic-epidermis-evidence-for-a-protective-role-in-the-psoriasis-imiquimod-mouse-model
#7
Jinling Ning, Ying Shen, Ting Wang, Mengru Wang, Wei Liu, Yonghu Sun, Furen Zhang, Lingling Chen, Yiqiang Wang
Preliminary datamining performed with Gene Expression Omnibus datasets implied that psoriasis may involve the matrix remodeling associated 7 (MXRA7), a gene with little function information yet. To test that hypothesis, studies were performed in human samples and murine models. Immunohistochemistry in normal human skin showed that MXRA7 proteins were present across the full epidermal layer, with highest expression level detected in the basal layer. In psoriatic samples, MXRA7 proteins were absent in the basal stem cells layer while suprabasal keratinocytes stained at a higher level than in normal tissues...
May 21, 2018: Experimental Dermatology
https://www.readbyqxmd.com/read/29777205/oviduct-epithelium-induces-interferon-tau-in-bovine-day-4-embryos-which-generates-an-anti-inflammatory-response-in-immune-cells
#8
Anup K Talukder, Mohammad B Rashid, Mohamed S Yousef, Kazuya Kusama, Takashi Shimizu, Masayuki Shimada, Susan S Suarez, Kazuhiko Imakawa, Akio Miyamoto
Recent studies indicate that communication between the bovine embryo and the mother begins in the oviduct. Here, we aimed to investigate the effect of embryos on bovine oviducts for their immune responses using an in vitro model. First, zygotes were cultured with or without bovine oviduct epithelial cells (BOECs) for 4 days, when embryos had reached the 16-cell stage. At that time, we detected interferon-tau (IFNT) in embryos co-cultured with BOECs, but not in embryos cultured alone. Next, peripheral blood mononuclear cells (PBMCs) were incubated either in media from embryo alone cultures or from co-cultures of embryos with BOECs...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29770133/peripheral-blood-stem-cell-mobilization-in-healthy-donors-by-granulocyte-colony-stimulating-factor-causes-preferential-mobilization-of-lymphocyte-subsets
#9
Guro Kristin Melve, Elisabeth Ersvaer, Geir Egil Eide, Einar K Kristoffersen, Øystein Bruserud
Background: Allogeneic hematopoietic stem cell transplantation is associated with a high risk of immune-mediated post-transplant complications. Graft depletion of immunocompetent cell subsets is regarded as a possible strategy to reduce this risk without reducing antileukemic immune reactivity. Study design and methods: We investigated the effect of hematopoietic stem cell mobilization with granulocyte colony-stimulating factor (G-CSF) on peripheral blood and stem cell graft levels of various T, B, and NK cell subsets in healthy donors...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29768427/differential-effects-of-tnf-%C3%AE-and-il-1%C3%AE-on-the-control-of-metal-metabolism-and-cadmium-induced-cell-death-in-chronic-inflammation
#10
Paola Bonaventura, Aline Lamboux, Francis Albarède, Pierre Miossec
OBJECTIVE: Interleukin-1-beta (IL-1β) and tumour necrosis factor-alpha (TNF-α) are both monocyte-derived cytokines. Both cytokines have been previously described to exert a role in rheumatoid arthritis (RA) pathogenesis synergizing with other pro-inflammatory mediators, such as interleukin-17 (IL-17) on target cells, for the perpetuation of the inflammatory response (e.g. IL-6 production). In the context of experimental RA, Cd addition has an anti-proliferative and anti-inflammatory effect when associated to IL-17/TNF-α stimulation, due to its accumulation in synoviocytes...
2018: PloS One
https://www.readbyqxmd.com/read/29764837/il22-promotes-kras-mutant-lung-cancer-by-induction-of-a-pro-tumor-immune-response-and-protection-of-stemness-properties
#11
Nasim Khosravi, Mauricio S Caetano, Amber M Cumpian, Nese Unver, Cynthia De la Garza Ramos, Oscar Noble, Soudabeh Daliri, Belinda J Hernandez, Berenice A Gutierrez, Scott E Evans, Samir Hanash, Andrei M Alekseev, Yi Yang, Seon Hee Chang, Roza Nurieva, Humam Kadara, Jichao Chen, Edwin J Ostrin, Seyed Javad Moghaddam
Somatic KRAS mutations are the most common oncogenic variants in lung cancer and are associated with poor prognosis. Using a Kras-induced lung cancer mouse model, CC-LR, we previously showed a role for inflammation in lung tumorigenesis through activation of the NF-kB pathway, along with induction of interleukin 6 (IL6) and an IL17-producing CD4+ T-helper cell response. IL22 is an effector molecule secreted by CD4+ and γδ T cells that we previously found to be expressed in CC-LR mice. IL22 mostly signals through the STAT3 pathway and is thought to act exclusively on non-hematopoietic cells with basal IL22 receptor (IL22R) expression on epithelial cells...
May 15, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29760692/il17-il17ra-as-a-novel-signaling-axis-driving-mesenchymal-stem-cell-therapeutic-function-in-experimental-autoimmune-encephalomyelitis
#12
Mónica Kurte, Patricia Luz-Crawford, Ana María Vega-Letter, Rafael A Contreras, Gautier Tejedor, Roberto Elizondo-Vega, Luna Martinez-Viola, Catalina Fernández-O'Ryan, Fernando E Figueroa, Christian Jorgensen, Farida Djouad, Flavio Carrión
The therapeutic effect of mesenchymal stem cells (MSCs) in multiple sclerosis (MS) and the experimental autoimmune encephalomyelitis (EAE) model has been well described. This effect is, in part, mediated through the inhibition of IL17-producing cells and the generation of regulatory T cells. While proinflammatory cytokines such as IFNγ, TNFα, and IL1β have been shown to enhance MSCs immunosuppressive function, the role of IL17 remains poorly elucidated. The aim of this study was, therefore, to investigate the role of the IL17/IL17R pathway on MSCs immunoregulatory effects focusing on Th17 cell generation in vitro and on Th17-mediated EAE pathogenesis in vivo ...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29758264/anti-il17-treatment-ameliorates-down-syndrome-phenotypes-in-mice
#13
Noemí Rueda, Verónica Vidal, Susana García-Cerro, Josep Oriol Narcís, María Llorens-Martín, Andrea Corrales, Sara Lantigua, Marcos Iglesias, Jesús Merino, Ramón Merino, Carmen Martínez-Cué
Down syndrome (DS) is characterized by structural and functional anomalies that are present prenatally and that lead to intellectual disabilities. Later in life, the cognitive abilities of DS individuals progressively deteriorate due to the development of Alzheimer's disease (AD)-associated neuropathology (i.e., β-amyloid (Aβ) plaques, neurofibrillary tangles (NFTs), neurodegeneration, synaptic pathology, neuroinflammation and increased oxidative stress). Increasing evidence has shown that among these pathological processes, neuroinflammation plays a predominant role in AD etiopathology...
May 11, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29755670/systemic-inflammatory-status-predict-the-outcome-of-k-ras-wt-metastatic-colorectal-cancer-patients-receiving-the-thymidylate-synthase-poly-epitope-peptide-anticancer-vaccine
#14
Pierpaolo Correale, Cirino Botta, Nicoletta Staropoli, Valerio Nardone, Pierpaolo Pastina, Cristina Ulivieri, Claudia Gandolfo, Tatiana Cosima Baldari, Stefano Lazzi, Domenico Ciliberto, Rocco Giannicola, Antonella Fioravanti, Antonio Giordano, Silvia Zappavigna, Michele Caraglia, Pierfrancesco Tassone, Luigi Pirtoli, Maria Grazia Cusi, Pierosandro Tagliaferri
TSPP is an anticancer poly-epitope peptide vaccine to thymidylate synthase, recently investigated in the multi-arm phase Ib TSPP/VAC1 trial. TSPP vaccination induced immune-biological effects and showed antitumor activity in metastatic colorectal cancer (mCRC) patients and other malignancies. Progression-free and overall survival of 41 mCRC patients enrolled in the study correlated with baseline levels of CEA, immune-inflammatory markers (neutrophil/lymphocyte ratio, CRP, ESR, LDH, ENA), IL-4 and with post-treatment change in p-ANCA and CD56dim CD16bright NKs ( p < 0...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29750108/artificial-macrocycles-as-il-17a-il-17ra-antagonists
#15
Wenjia Wang, Matthew R Groves, Alexander Dömling
Interleukin 17(A) is a pro-inflammatory cytokine involved in several auto-immune and inflammatory diseases. Current antagonists against IL17(A) or its receptor (IL17R) that show efficacy in clinical trials are monoclonal-antibodies (mAbs). However, recently designed artificial macrocyles are potent IL17-IL17R antagonists. Based on Co-crystal structures, a better understanding the biological activity and SAR of the macrocycles has been elucidated, demonstrating that macrocycles can compete with mAbs for difficult targets such as PPIs...
January 1, 2018: MedChemComm
https://www.readbyqxmd.com/read/29743811/the-immunoregulation-of-th17-in-host-against-intracellular-bacterial-infection
#16
REVIEW
Yonghong Li, Chaojun Wei, Hui Xu, Jing Jia, Zhenhong Wei, Rui Guo, Yanjuan Jia, Yu Wu, Yuanting Li, Xiaoming Qi, Zhenhao Li, Xiaoling Gao
T helper 17 cells (Th17) constitute a distinct subset of helper T cells with a unique transcriptional profile (STAT3, ROR γ , and ROR α ), cytokine production pattern (IL17 family), and requirement of specific cytokines for their differentiation (TGF- β , IL6, IL21, and IL23). Recent studies involving experimental animals and humans have shown that Th17/IL17 plays a crucial role in host defense against a variety of pathogens, including bacteria and viruses. The underlying mechanisms by which Th17 performs include dendritic cell (DC) regulation, neutrophil recruitment, Th1 modulation, and T regulatory cell (Treg) balance...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29687026/csf-serum-matrix-metallopeptidase-9-ratio-discriminates-neuro-beh%C3%A3-et-from-multiple-sclerosis
#17
Alessandra Aldinucci, Elena Bonechi, Tiziana Biagioli, Anna M Repice, Mario M D'Elios, Lorenzo Emmi, Giacomo Emmi, Elena Silvestri, Alessandro Barilaro, Clara Ballerini
In neuro Behçet disease with multiple sclerosis-like features, diagnosis could be challenging. Here, we studied the cerebrospinal fluid and serum inflammatory profile of 11 neuro Behçet and 21 relapsing-remitting multiple sclerosis patients. Between the soluble factors analyzed (MMP9, TNF α , IL6, CXCL13, CXCL10, CXCL8, IFN γ , IL10, IL17, IL23, and others) we found MMP9 increased in neuro Behçet serum compared to multiple sclerosis and decreased in cerebrospinal fluid. Furthermore, neuro Behçet analysis of circulating natural killer CD56DIM subset suggests their potential involvement in increased MMP9 production...
April 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29679490/increased-natural-killer-cell-subsets-with-inhibitory-cytokines-and-inhibitory-surface-receptors-in-patients-with-recurrent-miscarriage-and-decreased-or-normal-subsets-in-kidney-transplant-recipients-late-post-transplant
#18
L Zhu, M Aly, H Wang, H Karakizlis, R Weimer, C Morath, R J Kuon, B Toth, N Ekpoom, G Opelz, V Daniel
Patients with recurrent miscarriage (RM) show up-regulated cytotoxic natural killer (NK) cells that are suspected to play a causal role in abortion. In the present study, we investigated counter-regulating inhibitory mechanisms and compared the results in RM patients with those of healthy controls (HC), patients with end-stage renal disease (ESRD) and kidney transplant recipients late post-transplant (TX). NK, NK T and T cell subsets were analysed in the peripheral blood of 31 RM, 14 female ESRD and nine female TX patients as well as 21 female HC using eight-colour fluorescence flow cytometry...
April 21, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29676621/interleukin-17a-in-the-pathogenesis-of-lung-adenocarcinoma
#19
Zhen Lin, Christian Nguyen, Beibei Xu, Erik K Flemington, Gilbert F Morris
RATIONALE: Evidence has shown that inhaled lung carcinogens, such as tobacco smoke, silica, or asbestos, induce a T-helper cell type 17 inflammatory environment. Interleukin-17A (commonly and hereafter called IL-17) is the signature cytokine of T-helper cell type 17 inflammation. We have shown previously that IL-17 overexpression promotes growth of lung adenocarcinoma in transgenic mouse models. Our additional findings suggest that IL-17 suppresses the function of the p53 tumor suppressor protein in a mutant K-Ras-expressing lung tumor cell line...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29666259/shared-epitope-aryl-hydrocarbon-receptor-crosstalk-underlies-the-mechanism-of-gene-environment-interaction-in-autoimmune-arthritis
#20
Jiaqi Fu, Sarah V Nogueira, Vincent van Drongelen, Patrick Coit, Song Ling, Edward F Rosloniec, Amr H Sawalha, Joseph Holoshitz
The susceptibility to autoimmune diseases is affected by genetic and environmental factors. In rheumatoid arthritis (RA), the shared epitope (SE), a five-amino acid sequence motif encoded by RA-associated HLA-DRB1 alleles, is the single most significant genetic risk factor. The risk conferred by the SE is increased in a multiplicative way by exposure to various environmental pollutants, such as cigarette smoke. The mechanism of this synergistic interaction is unknown. It is worth noting that the SE has recently been found to act as a signal transduction ligand that facilitates differentiation of Th17 cells and osteoclasts in vitro and in vivo...
May 1, 2018: Proceedings of the National Academy of Sciences of the United States of America
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