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IFN-gamma signaling

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https://www.readbyqxmd.com/read/28723140/rapid-and-label-free-detection-of-interferon-gamma-via-an-electrochemical-aptasensor-comprising-a-ternary-surface-monolayer-on-a-gold-interdigitated-electrode-array
#1
Shaowei Ding, Curtis Mosher, Xian Y Lee, Suprem R Das, Allison A Cargill, Xiaohui Tang, Bolin Chen, Eric S McLamore, Carmen Gomes, Jesse M Hostetter, Jonathan C Claussen
A label-free electrochemical impedance spectroscopy (EIS) aptasensor for rapid detection (<35 min) of interferon-gamma (IFN-γ) was fabricated by immobilizing a RNA aptamer capture probe (ACP), selective to IFN-γ, on a gold interdigitated electrode array (Au IDE). The ACP was modified with a thiol group at the 5' terminal end and subsequently co-immobilized with 1,6-hexanedithiol (HDT) and 6-mercapto-1-hexanolphosphate (MCH) to the gold surface through thiol-gold interactions. This ACP/HDT-MCH ternary surface monolayer facilitates efficient hybridization with IFN-γ and displays high resistance to nonspecific adsorption of nontarget proteins [i...
February 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28680742/modulation-of-mhc-class-i-surface-expression-in-b16f10-melanoma-cells-by-methylseleninic-acid
#2
Claudia Lennicke, Jette Rahn, Jürgen Bukur, Falko Hochgräfe, Ludger A Wessjohann, Rudolf Lichtenfels, Barbara Seliger
The essential trace element selenium (Se) might play a role in cancer prevention as well as for cancer therapy. Its metabolite methylselenol is able to kill cells through distinct mechanisms including induction of reactive oxygen species, DNA damage and apoptosis. Since methylselenol affects innate immune responses by modulating the expression of NKG2D ligands, the aim of this study was to determine whether the methylselenol generating compound methylseleninic acid (MSA) influences the expression of the MHC class I surface antigens and growth properties thereby reverting immune escape...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28667090/lentiviral-vectors-escape-innate-sensing-but-trigger-p53-in-human-hematopoietic-stem-and-progenitor-cells
#3
Francesco Piras, Michela Riba, Carolina Petrillo, Dejan Lazarevic, Ivan Cuccovillo, Sara Bartolaccini, Elia Stupka, Bernhard Gentner, Davide Cittaro, Luigi Naldini, Anna Kajaste-Rudnitski
Clinical application of lentiviral vector (LV)-based hematopoietic stem and progenitor cells (HSPC) gene therapy is rapidly becoming a reality. Nevertheless, LV-mediated signaling and its potential functional consequences on HSPC biology remain poorly understood. We unravel here a remarkably limited impact of LV on the HSPC transcriptional landscape. LV escaped innate immune sensing that instead led to robust IFN responses upon transduction with a gamma-retroviral vector. However, reverse-transcribed LV DNA did trigger p53 signaling, activated also by non-integrating Adeno-associated vector, ultimately leading to lower cell recovery ex vivo and engraftment in vivo These effects were more pronounced in the short-term repopulating cells while long-term HSC frequencies remained unaffected...
June 30, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28630063/listeria-vectored-vaccine-expressing-the-mycobacterium-tuberculosis-30-kda-major-secretory-protein-via-the-constitutively-active-prfa-regulon-boosts-bcg-efficacy-against-tuberculosis
#4
Qingmei Jia, Barbara Jane Dillon, Saša Masleša-Galić, Marcus A Horwitz
A potent vaccine against tuberculosis, one of the world's deadliest diseases, is needed to enhance the immunity of people worldwide, most of whom have been vaccinated with the partially effective BCG vaccine. Here we investigate novel live attenuated recombinant Listeria monocytogenes (rLm) vaccines expressing the Mycobacterium tuberculosis (Mtb) 30 kDa major secretory protein (r30/Ag85B) (rLm30) as heterologous booster vaccines in animals primed with BCG. Using three attenuated Lm vectors, rLm ΔactA (LmI), rLm ΔactA ΔinlB (LmII), and rLm ΔactA ΔinlBprfA* (LmIII), we constructed five rLm30 vaccine candidates expressing the r30 linked in-frame to the Lm Listeriolycin O signal sequence and driven by the hly promoter (h30) or linked in-frame to the ActA N-terminus and driven by the actA promoter (a30)...
June 19, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28623917/the-dynamic-changes-of-interferon-lambdas-related-genes-and-proteins-in-jak-stat-pathway-in-both-acute-and-chronic-hiv-1-infected-patients
#5
Guoxian Zhao, Lifeng Liu, Bin Su, Tong Zhang, Peng Chen, Wei Li, Hao Wu
BACKGROUND: Host immune responses during acute HIV-1 infection can influence the viral setpoint, which is a predictor of disease progression. Interferon (IFN)-lambdas are newly classified type III interferons, which use JAK-STAT pathway. Currently, the dynamics of IFN-lambdas related genes and proteins expression in the signaling pathway have not been well elaborated, especially in acute HIV-1-infected patients. OBJECTIVES: To evaluate the dynamic changes of IFN-lambdas related genes and proteins in JAK/STAT pathway in acute HIV-1-infected patients, and analyze their correlation with CD4 T cell counts and HIV-1 viral loads...
June 17, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28610842/fumigaclavine-c-exhibits-anti-inflammatory-effects-by-suppressing-high-mobility-group-box-protein-1-relocation-and-release
#6
Wanguo Yu, Zhenghua Pan, Yixiang Zhu, Faliang An, Yanhua Lu
A previous study demonstrated that Fumigaclavine C (FC) had a potential immunosuppressive activity against concanavalin A-induced hepatitis in mice. However, the precise mechanisms of the anti-inflammatory and hepatoprotective effects of FC are incompletely delineated. This study further investigated the protective effects of FC on lipopolysaccharide (LPS)-induced murine RAW264.7 cells and the underlying molecular mechanism in liver kupffer cells. FC differentially attenuated the production of tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interferon gamma (IFN-γ), and high mobility group box protein 1 (HMGB-1)...
June 10, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28606480/sphingosine-kinase-2-in-autoimmune-inflammatory-disease-and-the-development-of-sphingosine-kinase-2-inhibitors
#7
REVIEW
Nigel J Pyne, David R Adams, Susan Pyne
The purpose of this Opinion is to present a case for targeting sphingosine kinase 2 (SK2) in autoimmune/inflammatory disease. Data obtained using Sphk2(-/-) mice suggest that SK2 is an anti-inflammatory enzyme, although this might be misleading because of a compensatory increase in the expression of a second isoform, sphingosine kinase 1 (SK1), which functions as a proinflammatory enzyme. SK2 is involved in regulating interleukin (IL)-12/interferon gamma (IFN-γ) and histone deacetylase-1/2 (HDAC-1/2) signalling and, potentially, retinoid-related orphan receptor gamma t (ROR-γt) stability linked with T helper (Th) 17 cell polarisation...
June 9, 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/28561280/anti-fc%C3%AE-riib-cd32-antibodies-differentially-modulate-murine-fviii-specific-recall-response-in-vitro
#8
Nadine Vollack, Julia Friese, Sabine Bergmann, Mark S Cragg, Andreas Tiede, Sonja Werwitzke
Fc gamma receptors (FcγRs) for IgG regulate adaptive immune responses by modulating activating and inhibitory signaling pathways within immune cells. Data from a hemophilia A mouse model demonstrate that genetic deletion or blockade of the inhibitory FcγR (CD32) suppresses the formation of antibody secreting cells (ASCs) in vitro. Mechanisms preventing the FVIII-specific recall response, however, remain unclear. Here, the potential role of CD32 inhibition was studied by differentially modulating receptor activity with selected anti-CD32 monoclonal antibodies (mAbs)...
May 31, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28519900/type-i-interferon-pathway-in-cns-homeostasis-and-neurological-disorders
#9
REVIEW
Thomas Blank, Marco Prinz
Type I interferons (IFNs), IFN-α and IFN-β, represent the major effector cytokines of the host immune response against viruses and other intracellular pathogens. These cytokines are produced via activation of numerous pattern recognition receptors, including the Toll-like receptor signaling network, retinoic acid-inducible gene-1 (RIG-1), melanoma differentiation-associated protein-5 (MDA-5) and interferon gamma-inducible protein-16 (IFI-16). Whilst the contribution of type I IFNs to peripheral immunity is well documented, they can also be produced by almost every cell in the central nervous system (CNS)...
September 2017: Glia
https://www.readbyqxmd.com/read/28493079/tlr2-regulates-allergic-airway-inflammation-and-autophagy-through-pi3k-akt-signaling-pathway
#10
Xuqin Jiang, Lei Fang, Huimei Wu, Xiaodong Mei, Fang He, Peishan Ding, Rongyu Liu
Toll-like receptors (TLRs) are innate pattern recognition receptors that play a critical role in allergic inflammation, yet their contribution to autophagy in asthma remains poorly defined. Here, we investigate the role of Toll-like receptor 2 (TLR2) in phosphoinositide 3-kinases/protein kinase B (PI3K/Akt) pathway-mediated autophagy in ovalbumin-induced airway inflammation in mice. Wild-type (WT) and TLR2-knockout (TLR2(-/-)) C57BL/6 mice were ovalbumin-sensitized and ovalbumin-challenged. In ovalbumin-challenged WT mice, enhanced expression of TLR2 in lung tissue, remarkable inflammatory cell infiltrates, goblet cell hyperplasia, and increased mucus production were observed...
August 2017: Inflammation
https://www.readbyqxmd.com/read/28475283/cd69-from-activation-marker-to-metabolic-gatekeeper
#11
REVIEW
Danay Cibrián, Francisco Sánchez-Madrid
CD69 is a membrane-bound, type II C-lectin receptor. It is a classical early marker of lymphocyte activation due to its rapid appearance on the surface of the plasma membrane after stimulation. CD69 is expressed by several subsets of tissue resident immune cells, including resident memory T (TRM) cells and gamma delta (γδ) T cells, and is therefore considered a marker of tissue retention. Recent evidence has revealed that CD69 regulates some specific functions of selected T-cell subsets, determining the migration-retention ratio as well as the acquisition of effector or regulatory phenotypes...
June 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28465254/activation-of-adenosine-a2a-receptor-signaling-regulates-the-expression-of-cytokines-associated-with-immunologic-dysfunction-in-btbr-t-itpr3-tf-j-mice
#12
Mushtaq A Ansari, Sabry M Attia, Ahmed Nadeem, Saleh A Bakheet, Mohammad Raish, Tajdar H Khan, Othman A Al-Shabanah, Sheikh F Ahmad
Autism spectrum disorder (ASD) is neurodevelopmental disorders characterized by stereotypical repetitive behavior, impaired social interaction, and deficits in communication. The BTBR T(+) Itpr3(tf)/J (BTBR) mice have been extensively used as an animal model of the ASD-like phenotype. Adenosine A2A receptors (A2ARs) are considered potential targets in the treatment of neurodegenerative diseases. In this study, we used the A2AR antagonist SCH 5826 (SCH) and the A2AR agonist CGS 21680 (CGS) to investigate the activation of A2AR signaling in immune cells...
April 30, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28456928/pro-inflammatory-cytokines-in-psychiatric-disorders-in-children-and-adolescents-a-review
#13
Paulina Miłkowska, Katarzyna Popko, Urszula Demkow, Tomasz Wolańczyk
Cytokines are a large group of small proteins which play a significant role in cell signaling and regulate a variety of processes in organisms, including proliferation and differentiation of many cells, mediation in defense reactions and regulation of hematopoiesis. Cytokines can be divided into those with pro- and those with anti-inflammatory properties. In the group of pro-inflammatory cytokines the most important are: IL-1 beta, IL-6, TNF-alpha, and IFN-gamma. Pro-inflammatory cytokines might be involved in the pathophysiology of many psychiatric conditions in adults, but their role in children and adolescents is less clear...
April 30, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28450854/microbial-disease-spectrum-linked-to-a-novel-il-12r%C3%AE-1-n-terminal-signal-peptide-stop-gain-homozygous-mutation-with-paradoxical-receptor-cell-surface-expression
#14
Thais Louvain de Souza, Regina C de Souza Campos Fernandes, Juliana Azevedo da Silva, Vladimir Gomes Alves Júnior, Adelia Gomes Coelho, Afonso C Souza Faria, Nabia M Moreira Salomão Simão, João T Souto Filho, Caroline Deswarte, Stéphanie Boisson-Dupuis, Dara Torgerson, Jean-Laurent Casanova, Jacinta Bustamante, Enrique Medina-Acosta
Patients with Mendelian Susceptibility to Mycobacterial Diseases (MSMD) exhibit variable vulnerability to infections by mycobacteria and other intramacrophagic bacteria (e.g., Salmonella and Klebsiella) and fungi (e.g., Histoplasma, Candida, Paracoccidioides, Coccidioides, and Cryptococcus). The hallmark of MSMD is the inherited impaired production of interferon gamma (IFN-γ) or the lack of response to it. Mutations in the interleukin (IL)-12 receptor subunit beta 1 (IL12RB1) gene accounts for 38% of cases of MSMD...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28425862/the-impact-of-il-17-in-atherosclerosis
#15
Xinjie Lu
Atherosclerosis is a chronic vascular disease in which atherosclerotic plaques develop in the arterial wall. It is believed that inflammation plays a major role in atherosclerotic formation and progression. Thus, atherosclerosis can be considered as an inflammatory disease of the arterial vessel. Mouse model demonstrated that T and B cell deficiency reduces the atherosclerotic burden in the formation of an atherosclerotic lesion. CD4+ T helper cells (Th), such as Th1 cells known being the major CD4+ T cell subtype found in mouse models of atherogenesis, increase plaque formation caused by oxLDL...
April 19, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28405892/pro-inflammatory-cytokines-in-psychiatric-disorders-in-children-and-adolescents-a-review
#16
Paulina Miłkowska, Katarzyna Popko, Urszula Demkow, Tomasz Wolańczyk
Cytokines are a large group of small proteins which play a significant role in cell signaling and regulate a variety of processes in organisms, including proliferation and differentiation of many cells, mediation in defense reactions and regulation of hematopoiesis. Cytokines can be divided into those with pro- and those with anti-inflammatory properties. In the group of pro-inflammatory cytokines the most important are: IL-1 beta, IL-6, TNF-alpha, and IFN-gamma. Pro-inflammatory cytokines might be involved in the pathophysiology of many psychiatric conditions in adults, but their role in children and adolescents is less clear...
April 13, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28397044/interferon-%C3%AE-alters-the-immune-related-mirna-expression-of-microvesicles-derived-from-mesenchymal-stem-cells
#17
Ai-Qi Zhao, Hui Xie, Sheng-Yan Lin, Qian Lei, Wen-Xiang Ren, Fei Gao, Hao Guo, An-Yuan Guo, Zhi-Chao Chen, Hong-Xiang Wang
Increasing studies have demonstrated that interferon gamma (IFN-γ), which serves as a critical inflammatory cytokine, is essential to induce the immunosuppressive effects of mesenchymal stem cells (MSCs). However, the mechanisms underlying the enhanced immunosuppressive effects of IFN-γ-stimulated MSCs (γMSCs) are not fully understood. MSC-derived microvesicles (MSC-MVs) have been viewed as potential pivotal mediators of the immunosuppressive effects of MSCs. Moreover, microRNAs (miRNAs) are important regulators of immunological processes and can be shuttled from cell to cell by MVs...
April 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28377718/sophocarpine-protects-mice-from-cona-induced-hepatitis-via-inhibition-of-the-ifn-gamma-stat1-pathway
#18
Xiu-Xiu Sang, Rui-Lin Wang, Cong-En Zhang, Shi-Jing Liu, Hong-Hui Shen, Yu-Ming Guo, Ya-Ming Zhang, Ming Niu, Jia-Bo Wang, Zhao-Fang Bai, Xiao-He Xiao
Sophocarpine is the major pharmacologically active compound of the traditional Chinese herbal medicine Radix Sophorae Subprostratae which has been used in treating hepatitis for years in China. It has been demonstrated that Sophocarpine exerts an activity in immune modulation and significantly decreases the production of inflammatory cytokines. However, the protective effects of Sophocarpine in T cell-dependent immune hepatitis remained unknown. The aim of this study was to determine the protective effects and pharmacological mechanisms of Sophocarpine on Concanavalin A (ConA)-induced hepatitis, an experimental model of T cell-mediated liver injury...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28373354/protective-role-for-macrophages-in-respiratory-francisella-tularensis-infection
#19
Donald J Steiner, Yoichi Furuya, Michael B Jordan, Dennis W Metzger
Francisella tularensis causes lethal pneumonia following infection of the lungs by targeting macrophages for intracellular replication; however, macrophages stimulated with interferon gamma (IFN-γ) can resist infection in vitro We therefore hypothesized that the protective effect of IFN-γ against F. tularensisin vivo requires macrophages receptive to stimulation. We found that the lethality of pulmonary F. tularensis LVS infection was exacerbated under conditions of alveolar macrophage depletion and in mice with a macrophage-specific defect in IFN-γ signaling (termed mice with macrophages insensitive to IFN-γ [MIIG mice])...
June 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28339906/interstitial-fibrosis-scored-on-whole-slide-digital-imaging-of-kidney-biopsies-is-a-predictor-of-outcome-in-proteinuric-glomerulopathies
#20
Laura H Mariani, Sebastian Martini, Laura Barisoni, Pietro A Canetta, Jonathan P Troost, Jeffrey B Hodgin, Matthew Palmer, Avi Z Rosenberg, Kevin V Lemley, Hui-Ping Chien, Jarcy Zee, Abigail Smith, Gerald B Appel, Howard Trachtman, Stephen M Hewitt, Matthias Kretzler, Serena M Bagnasco
Background.: Interstitial fibrosis (IF), tubular atrophy (TA) and interstitial inflammation (II) are known determinants of progression of renal disease. Standardized quantification of these features could add value to current classification of glomerulopathies. Methods.: We studied 315 participants in the Nephrotic Syndrome Study Network (NEPTUNE) study, including biopsy-proven minimal change disease (MCD = 98), focal segmental glomerulosclerosis (FSGS = 121), membranous nephropathy (MN = 59) and IgA nephropathy (IgAN = 37)...
February 27, 2017: Nephrology, Dialysis, Transplantation
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