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Type 3 Interferon

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https://www.readbyqxmd.com/read/27930719/in-vitro-and-in-vivo-anti-allergic-and-anti-inflammatory-effects-of-ebv-a-newly-developed-derivative-of-bee-venom-through-modulation-of-irf3-signaling-pathway-in-a-carrageenan-induced-edema-model
#1
Hwa-Jin Chung, Jinho Lee, Joon-Shik Shin, Me-Riong Kim, Wonil Koh, Min-Jeong Kim, Jae-Woong Lee, Eun Jee Kim, In-Hee Lee, Won Kyung Kim, Yoon Jae Lee, Sang Kook Lee, In-Hyuk Ha
BACKGROUND: Bee venom (BV), a type of toxin extracted from honeybees (Apis mellifera), has been empirically and widely used to treat inflammatory diseases throughout Asia. Essential BV (eBV) was developed by removing phospholipase A2 (PLA2) and histamine to lower occurrence of allergic reaction. This study investigated the anti-allergic and anti-inflammatory activities of eBV in vitro and in vivo and its underlying mechanism of action. METHODS: The anti-inflammatory potential of eBV was assessed in vivo using a carrageenan-induced paw edema model...
2016: PloS One
https://www.readbyqxmd.com/read/27927205/elimination-of-n-glycosylation-by-site-mutation-further-prolongs-the-half-life-of-ifn-%C3%AE-fc-fusion-proteins-expressed-in-pichia-pastoris
#2
Hao Jia, Yugang Guo, Xiaoping Song, Changsheng Shao, Jing Wu, Jiajia Ma, Mingyang Shi, Yuhui Miao, Rui Li, Dong Wang, Zhigang Tian, Weihua Xiao
BACKGROUND: Interferon (IFN)-α has been commonly used as an antiviral drug worldwide; however, its short half-life in circulation due to its low molecular weight and sensitivity to proteases impacts its efficacy and patient compliance. RESULTS: In this study, we present an IgG1 Fc fusion strategy to improve the circulation half-life of IFN-α. Three different forms of IgG1 Fc fragments, including the wild type, aglycosylated homodimer and aglycosylated single chain, were each fused with IFN-α and designated as IFN-α/Fc-WT, IFN-α/Fc-MD, and IFN-α/Fc-SC, respectively...
December 7, 2016: Microbial Cell Factories
https://www.readbyqxmd.com/read/27918832/the-effect-of-ambient-titanium-dioxide-microparticle-exposure-to-the-ocular-surface-on-the-expression-of-inflammatory-cytokines-in-the-eye-and-cervical-lymph-nodes
#3
Youngsub Eom, Jong Suk Song, Hyun Kyu Lee, Boram Kang, Hyeon Chang Kim, Hyung Keun Lee, Hyo Myung Kim
Purpose: To investigate the ocular immune response following exposure to airborne titanium dioxide (TiO2) microparticles. Methods: Rats in the TiO2-exposed group (n = 10) were exposed to TiO2 particles for 2 hours twice daily for 5 days, while the controls (n = 10) were not. Corneal staining score and tear lactic dehydrogenase (LDH) activity were measured to evaluate ocular surface damage, serum immunoglobulin (Ig) G and E were assayed by using enzyme-linked immunosorbent assay, and the size of cervical lymph nodes was measured...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27918527/induction-and-suppression-of-antiviral-rna-interference-by-influenza-a-virus-in-mammalian-cells
#4
Yang Li, Megha Basavappa, Jinfeng Lu, Shuwei Dong, D Alexander Cronkite, John T Prior, Hans-Christian Reinecker, Paul Hertzog, Yanhong Han, Wan-Xiang Li, Sihem Cheloufi, Fedor V Karginov, Shou-Wei Ding, Kate L Jeffrey
Influenza A virus (IAV) causes annual epidemics and occasional pandemics, and is one of the best-characterized human RNA viral pathogens(1). However, a physiologically relevant role for the RNA interference (RNAi) suppressor activity of the IAV non-structural protein 1 (NS1), reported over a decade ago(2), remains unknown(3). Plant and insect viruses have evolved diverse virulence proteins to suppress RNAi as their hosts produce virus-derived small interfering RNAs (siRNAs) that direct specific antiviral defence(4-7) by an RNAi mechanism dependent on the slicing activity of Argonaute proteins (AGOs)(8,9)...
December 5, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27917175/nuclear-localization-of-suppressor-of-cytokine-signaling-1-regulates-local-immunity-in-the-lung
#5
Jana Zimmer, Michael Weitnauer, Sébastien Boutin, Günter Küblbeck, Sabrina Thiele, Patrick Walker, Felix Lasitschka, Lars Lunding, Zane Orinska, Christina Vock, Bernd Arnold, Michael Wegmann, Alexander Dalpke
Suppressor of cytokine signaling 1 (SOCS1) is a negative feedback inhibitor of cytoplasmic Janus kinase and signal transducer and activator of transcription (STAT) signaling. SOCS1 also contains a nuclear localization sequence (NLS), yet, the in vivo importance of nuclear translocation is unknown. We generated transgenic mice containing mutated Socs1ΔNLS that fails to translocate in the cell nucleus (MGL(tg) mice). Whereas mice fully deficient for SOCS1 die within the first 3 weeks due to excessive interferon signaling and multiorgan inflammation, mice expressing only non-nuclear Socs1ΔNLS (Socs1(-/-)MGL(tg) mice) were rescued from early lethality...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27911820/map4-regulated-dynein-dependent-trafficking-of-btn3a1-controls-the-tbk1-irf3-signaling-axis
#6
Minji Seo, Seong-Ok Lee, Ji-Hoon Kim, Yujin Hong, Seongchan Kim, Yeumin Kim, Dal-Hee Min, Young-Yun Kong, Jinwook Shin, Kwangseog Ahn
The innate immune system detects viral nucleic acids and induces type I interferon (IFN) responses. The RNA- and DNA-sensing pathways converge on the protein kinase TANK-binding kinase 1 (TBK1) and the transcription factor IFN-regulatory factor 3 (IRF3). Activation of the IFN signaling pathway is known to trigger the redistribution of key signaling molecules to punctate perinuclear structures, but the mediators of this spatiotemporal regulation have yet to be defined. Here we identify butyrophilin 3A1 (BTN3A1) as a positive regulator of nucleic acid-mediated type I IFN signaling...
November 22, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27910206/balance-between-il-3-and-type-iinterferons-and-their-interrelationship-with-fasl-dictates-lifespan-and-effector-functions-of-human-basophils
#7
B R Hagmann, A Odermatt, T Kaufmann, C A Dahinden, M Fux
BACKGROUND: In contrast to eosinophils and neutrophils, the regulation of the lifespan of human basophils is poorly defined, with the exception of the potent anti-apoptotic effect of IL-3 that also promotes pro-inflammatory effector functions and phenotypic changes. Type I IFNs (IFN-α, IFN-β), which are well known for their anti-viral activities, have the capacity to inhibit allergic inflammation. OBJECTIVE: To elucidate whether type I IFNs have the potential to abrogate the lifespan and/or effector functions of human basophils...
November 5, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27907166/vaccinia-virus-protein-c6-inhibits-type-i-ifn-signalling-in-the-nucleus-and-binds-to-the-transactivation-domain-of-stat2
#8
Jennifer H Stuart, Rebecca P Sumner, Yongxu Lu, Joseph S Snowden, Geoffrey L Smith
The type I interferon (IFN) response is a crucial innate immune signalling pathway required for defense against viral infection. Accordingly, the great majority of mammalian viruses possess means to inhibit this important host immune response. Here we show that vaccinia virus (VACV) strain Western Reserve protein C6, is a dual function protein that inhibits the cellular response to type I IFNs in addition to its published function as an inhibitor of IRF-3 activation, thereby restricting type I IFN production from infected cells...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27902364/markers-of-dengue-severity-systematic-review-of-cytokines-and-chemokines
#9
Yie Hou Lee, Wei Yee Leong, Annelies Wilder-Smith
Prognosis of dengue remains a challenge in allowing the early, objective triage of patients with dengue fever of differing severity. Circulating immuno-modulating proteins have brought new possibilities as prognostic markers of severe dengue. The systematic review is devoted to understanding the potential utility of blood-based cytokines and chemokines as prognostication markers of severe dengue based on current literature. PUBMED and EMBASE were searched. Of 794 candidate articles, 685 abstracts were screened against our exclusion/inclusion criteria and 25 (3...
October 21, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27895405/impact-of-il28b-and-oas-gene-family-polymorphisms-on-interferon-treatment-response-in-caucasian-children-chronically-infected-with-hepatitis-b-virus
#10
Krzysztof Domagalski, Małgorzata Pawłowska, Agnieszka Zaleśna, Małgorzata Pilarczyk, Paweł Rajewski, Waldemar Halota, Andrzej Tretyn
AIM: To investigate the impact of IL28B and OAS gene polymorphisms on interferon treatment responses in children with chronic hepatitis B. METHODS: We enrolled 52 children (between the ages of 4 and 18) with hepatitis B e antigen-negative chronic hepatitis B (CHB), who were treated with pegylated interferon alfa for 48 wk. Single nucleotide polymorphisms in the OAS1 (rs1131476), OAS2 (rs1293747), OAS3 (rs2072136), OASL (rs10849829) and IL28B (rs12979860, rs12980275 and rs8099917) genes were studied to examine their associations with responses to IFN treatment in paediatric patients...
November 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27881648/modeling-severe-fever-with-thrombocytopenia-syndrome-virus-infection-in-golden-syrian-hamsters-importance-of-stat2-in-preventing-disease-and-effective-treatment-with-favipiravir
#11
Brian B Gowen, Jonna B Westover, Jinxin Miao, Arnaud J Van Wettere, Johanna D Rigas, Brady T Hickerson, Kie-Hoon Jung, Rong Li, Bettina L Conrad, Skot Nielson, Yousuke Furuta, Zhongde Wang
: Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne disease endemic in parts of Asia. The etiologic agent, SFTS virus (SFTSV; Bunyaviridae family, Phlebovirus genus) has caused significant morbidity and mortality in China, Korea, and Japan, with key features of disease being intense fever, thrombocytopenia, and leukopenia. Case fatality rates are estimated in the 30% range and no antivirals or vaccines are approved for use for treatment and prevention of SFTS...
November 23, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27878760/reduced-plasma-levels-of-25-hydroxycholesterol-and-increased-cerebrospinal-fluid-levels-of-bile-acid-precursors-in-multiple-sclerosis-patients
#12
Peter J Crick, William J Griffiths, Juan Zhang, Martin Beibel, Jonas Abdel-Khalik, Jens Kuhle, Andreas W Sailer, Yuqin Wang
Multiple sclerosis (MS) is an autoimmune, inflammatory disease of the central nervous system (CNS). We have measured the levels of over 20 non-esterified sterols in plasma and cerebrospinal fluid (CSF) from patients suffering from MS, inflammatory CNS disease, neurodegenerative disease and control patients. Analysis was performed following enzyme-assisted derivatisation by liquid chromatography-mass spectrometry (LC-MS) exploiting multistage fragmentation (MS (n) ). We found increased concentrations of bile acid precursors in CSF from each of the disease states and that patients with inflammatory CNS disease classified as suspected autoimmune disease or of unknown aetiology also showed elevated concentrations of 25-hydroxycholestertol (25-HC, P < 0...
November 23, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27877087/il28b-snp-rs12979860-is-the-critical-predictor-for-sustained-viral-response-in-chinese-children-aged-1-to-6-years-with-chronic-hepatitis-c
#13
Yan-Wei Zhong, Hong-Fei Zhang, Yan-Min Shi, Yong-Li Li, Fang Chu, Zhi-Qiang Xu, Da-Wei Chen, Yu Gan, Fu-Chuan Wang, Mei-Lei Gu, Yi Dong, Shi-Shu Zhu, Ce Shi, Hua-Hao Fan, Xiu-Chang Zhang, Min Zhang
Clinical data on children with chronic hepatitis C (CHC) remain extremely limited. This study investigated sustained virologic response (SVR) to alfa-interferon 2b plus RBV treatment in children aged 1-6 years with unsafe injection-acquired CHC. 154 children with CHC aged 1 to 6 years were enrolled, 101 of them were male (65.6%) and 53 were female (34.4%), and they were treated with alfa-interferon at a dose of 1-5 MIU/m(2) 3 times weekly plus oral RBV (15 mg/kg/day) for 48 weeks. 57(39.3 %) of them were genotype 1b, 73(50...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27876202/an-interferon-inducing-porcine-reproductive-and-respiratory-syndrome-virus-vaccine-candidate-elicits-protection-against-challenge-with-the-heterologous-virulent-type-2-strain-vr-2385-in-pigs
#14
Eve Fontanella, Zexu Ma, Yanjin Zhang, Alessandra M M G de Castro, Huigang Shen, Patrick G Halbur, Tanja Opriessnig
Achieving consistent protection by vaccinating pigs against porcine reproductive and respiratory syndrome virus (PRRSV) remains difficult. Recently, an interferon-inducing PRRSV vaccine candidate strain A2MC2 was demonstrated to be attenuated and induced neutralizing antibodies. The objective of this study was to determine the efficacy of passage 90 of A2MC2 (A2P90) to protect pigs against challenge with moderately virulent PRRSV strain VR-2385 (92.3% nucleic acid identity with A2MC2) and highly virulent atypical PRRSV MN184 (84...
November 18, 2016: Vaccine
https://www.readbyqxmd.com/read/27873323/inflammation-enhances-the-vaccination-potential-of-cd40-activated-b-cells-in-mice
#15
Mélissa Mathieu, Livia Odagiu, Léa Gaudot, Jean-François Daudelin, Heather J Melichar, Réjean Lapointe, Nathalie Labrecque
Vaccination with antigen-pulsed CD40-activated B (CD40-B) cells can efficiently lead to the in vivo differentiation of naive CD8(+) T cells into fully functional effectors. In contrast to bone marrow-derived dendritic cell (BMDC) vaccination, CD40-B cell priming does not allow for memory CD8(+) T-cell generation but the reason for this deficiency is unknown. Here, we show that compared to BMDCs, murine CD40-B cells induce lower expression of several genes regulated by T-cell receptor signalling, co-stimulation and inflammation (signals 1 to 3) in mouse T cells...
November 22, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27870968/the-cardiac-maladaptive-atf3-dependent-cross-talk-between-cardiomyocytes-and-macrophages-is-mediated-by-the-ifn%C3%AE-cxcl10-cxcr3-axis
#16
L Koren, U Barash, Y Zohar, N Karin, A Aronheim
RATIONAL: Pressure overload induces adaptive and maladaptive cardiac remodeling processes in the heart. Part of the maladaptive process is the cross-talk between cardiomyocytes and macrophages which is dependent on the function of the Activating Transcription Factor 3, ATF3. Yet, the molecular mechanism involved in cardiomyocytes-macrophages communication leading to macrophages recruitment to the heart and cardiac maladaptive remodeling is currently unknown. METHODS AND RESULTS: Isolated peritoneal macrophages from either wild type or ATF3-KO mice were cultured in serum free medium to collect conditioned medium (CM)...
November 10, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27858144/th9-and-other-il-9-producing-cells-in-allergic-asthma
#17
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/27847245/celastrol-inhibits-dengue-virus-replication-via-up-regulating-type-i-interferon-and-downstream-interferon-stimulated-responses
#18
Jung-Sheng Yu, Chin-Kai Tseng, Chun-Kuang Lin, Yao-Chin Hsu, Yu-Hsuan Wu, Ching-Liang Hsieh, Jin-Ching Lee
ETHNOPHARMACOLOGICAL RELEVANCE AND AIM OF THE STUDY: Tripterygium wilfordii (lei gong teng; Thunder of God Vine), a member of the Celastraceae family, is a medicinal plant used to treat a range of illnesses. Celastrol is a quinone methide triterpene and the most abundant bioactive constituent isolated from the root extracts of T. wilfordii. Previous studies have shown that celastrol exhibits antiviral activity against HIV and SARS-CoV. To date, no investigations of the anti-DENV activity of celastrol have been reported...
November 12, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27845489/leishmaniasis-and-ifn-%C3%AE-dependent-chemokines
#19
P Fallahi, G Elia, A Bonatti
Leishmaniasis is a disease caused by Leishmania and spread by the bite of certain types of sandflies. Leishmaniasis affects as many as 12 million people worldwide, with 2 million new cases each year. Leishmania infection, and Leishmaniasis, following occupational exposure has been also reported. Three forms of Leishmaniasis are known: a- Cutaneous Leishmaniasis (CL); b-Mucocutaneous Leishmaniasis; c- Visceral Leishmaniasis (VL). The visceral form of Leishmaniasis has an estimated incidence of 500,000 new cases...
September 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/27843537/retrospective-study-of-the-associations-between-hepatitis-c-virus-infection-and-metabolic-factors
#20
Shira Yair-Sabag, Elchanan Nussinson, Ofir Ben-Assuli, Fahmi Shibli, Azmi Shahbari, Shira Zelber-Sagi
AIM: To evaluate the bidirectional association between metabolic syndrome (MS) components and antiviral treatment response for chronic hepatitis C virus (HCV) infection. METHODS: This retrospective cohort study included 119 HCV + patients treated with pegylated-interferon-α and ribavirin. Metabolic characteristics and laboratory data were collected from medical records. Differences in baseline clinical and demographic risk factors between responders and non-responders were assessed using independent samples t-tests or χ(2) tests...
October 28, 2016: World Journal of Hepatology
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