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https://www.readbyqxmd.com/read/28398870/interleukin-35-rescues-regulatory-b-cell-function-but-the-effect-is-dysregulated-in-ulcerative-colitis
#1
Shaoxuan Wang, Chengyong Qin
Ulcerative colitis (UC) is a long-time inflammatory condition arising from aberrant immune activation in the colon and the rectum. Interleukin (IL)-35 plays critical roles in autoimmune disorders. In this study, we explored the pathways of IL-35 in affecting UC. First, peripheral blood mononuclear cells (PBMCs) from UC patients were obtained. Pretreating PBMCs with IL-35 resulted in significantly elevated IL-10 production from whole PBMCs as well as B cells, whereas pretreating PBMCs with IL-12 or IL-27 did not demonstrate a similar effect...
February 16, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28386371/immunomodulatory-activity-of-interleukin-27-in-human-chronic-periapical-diseases
#2
Juan Li, Rong Wang, Shi-Guang Huang
This study aims to observe expression of IL-27 on different cells in periapical tissues of different types of human chronic periapical diseases. Periapical tissue specimens of 60 donors, including healthy control (n=20), periapical granuloma group (n=20) and radicular cysts group (n=20), were fixed in 10% buffered formalin, stained with hematoxylin and eosin for histopathology. Then specimens were stained with double- immuno-fluorescence assay for identification of IL-27-tryptase (mast cells, MCs), IL-27-CD14 (mononuclear phagocyte cells, MPs) and IL-27-CD31 (endothelial cells, ECs) double-positive cells in periapical tissues...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28377398/il-27-enhances-lps-induced-il-1%C3%AE-in-human-monocytes-and-murine-macrophages
#3
Carlene Petes, Christopher Wynick, Christina Guzzo, Divya Mehta, Sarah Logan, Bruce W Banfield, Sameh Basta, Andrea Cooper, Katrina Gee
IL-27 bridges innate and adaptive immunity by modulating cytokine production from myeloid cells and regulating Th cell differentiation. During bacterial infection, TLR4 triggering by LPS induces IL-27 production by monocytes and macrophages. We have previously shown that IL-27 can prime monocytes for LPS responsiveness by enhancing TLR4 expression and intracellular signaling. If unregulated, this could result in damaging inflammation, whereas on the other hand, this may also provide greater responses by inflammatory processes induced in response to bacterial pathogens...
April 4, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28344880/protective-function-of-interleukin-27-in-colitis-associated-cancer-via-suppression-of-inflammatory-cytokines-in-intestinal-epithelial-cells
#4
Bijun Cui, Shen Lu, Lihua Lai, Yiwei Xie, Jia He, Yue Xue, Peng Xiao, Ting Pan, Luoquan Chen, Yang Liu, Xuetao Cao, Qingqing Wang
Numerous studies have demonstrated that inflammation contributes to a variety of cancer formation, among them, colitis-associated cancer (CAC) represents a typical inflammation-related cancer. Interleukin 27 (IL-27) has been demonstrated to play an important role in inflammation-related disease. The effect of IL-27 in intestinal inflammation is controversial and its role in CAC is not elucidated yet. In our present study, we found that IL-27 has protective function in murine model of CAC through suppression of inflammatory cytokines in intestinal epithelial cells (IECs)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28338007/human-immunodeficiency-virus-type-1-myeloid-derived-suppressor-cells-inhibit-cytomegalovirus-inflammation-through-interleukin-27-and-b7-h4
#5
Ankita Garg, Rodney Trout, Stephen A Spector
HIV/CMV co-infected persons despite prolonged viral suppression often experience persistent immune activation, have an increased frequency of myeloid derived suppressor cells (MDSC) and are at increased risk for cardiovascular disease. We examined how HIV MDSC control CD4(+) T cell IFNγ response to a CMVpp65 peptide pool (CMVpp65). We show that HIV/CMV co-infected persons with virologic suppression and recovered CD4(+) T cells compared to HIV(-)/CMV(+) controls exhibit an increase in CD4(+)CX3CR1(+)IFNγ(+) cells in response to CMVpp65; MDSC depletion further augmented CD4(+)CX3CR1(+)IFNγ(+) cells and IFNγ production...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331088/bst-2-expression-modulates-small-cd4-mimetic-sensitization-of-hiv-1-infected-cells-to-adcc
#6
Jonathan Richard, Jérémie Prévost, Benjamin von Bredow, Shilei Ding, Nathalie Brassard, Halima Medjahed, Mathieu Coutu, Bruno Melillo, Frédéric Bibollet-Ruche, Beatrice H Hahn, Daniel E Kaufmann, Amos B Smith, Joseph Sodroski, Daniel Sauter, Frank Kirchhoff, Katrina Gee, Stuart J Neil, David T Evans, Andrés Finzi
Antibodies recognizing conserved CD4-induced (CD4i) epitopes on HIV-1 Env and able to mediate antibody-dependent cellular cytotoxicity (ADCC) have been shown to be present in sera from most HIV-1-infected individuals. These antibodies preferentially recognize Env in its CD4-bound conformation. CD4 downregulation by Nef and Vpu dramatically reduces exposure of CD4i HIV-1 Env epitopes and therefore reduce the susceptibility of HIV-1-infected cells to ADCC mediated by HIV+ sera. Importantly, this mechanism of immune evasion can be circumvented with small-molecule CD4-mimetics (CD4mc) which are able to transition Env into the CD4-bound conformation and sensitize HIV-1-infected cells to ADCC mediated by HIV+ sera...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28300844/il-27-triggers-il-10-production-in-th17-cells-via-a-c-maf-ror%C3%AE-t-blimp-1-signal-to-promote-the-progression-of-endometriosis
#7
Kai-Kai Chang, Li-Bing Liu, Li-Ping Jin, Bing Zhang, Jie Mei, Hui Li, Chun-Yan Wei, Wen-Jie Zhou, Xiao-Yong Zhu, Jun Shao, Da-Jin Li, Ming-Qing Li
Endometriosis is an estrogen-dependent inflammatory disease. The anti-inflammatory cytokine IL-10 is also increased in endometriosis. IL-10 production by Th17 cells is critical for limiting autoimmunity and inflammatory responses. However, the mechanism of inducing IL-10-producing Th17 cells is still largely unknown. The present study investigated the differentiation mechanism and role of IL-10-producing Th17 cells in endometriosis. Here, we report that IL-10(+)Th17 cells are significantly increased in the peritoneal fluid of women with endometriosis, along with an elevation of IL-27, IL-6 and TGF-β...
March 16, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28289419/cytokine-signatures-in-mucocutaneous-and-ocular-beh%C3%A3-et-s-disease
#8
Giuseppe Lopalco, Orso Maria Lucherini, Antonio Lopalco, Vincenzo Venerito, Claudia Fabiani, Bruno Frediani, Mauro Galeazzi, Giovanni Lapadula, Luca Cantarini, Florenzo Iannone
Behçet's disease (BD) is a multi-systemic inflammatory disorder consisting of recurrent oral aphthosis, genital ulcers, and chronic relapsing bilateral uveitis; however, many other organs may be affected. Several pro-inflammatory cytokines, mainly derived from Th1 and Th17 lymphocytes, seem to be involved in different pathogenic pathways leading to development of the clinical manifestations. On this basis, the primary aim of our study was to compare a core set of pro-inflammatory cytokines between patients with BD and healthy control (HC)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28277274/therapeutic-reversal-of-food-allergen-sensitivity-by-mature-retinoic-acid-differentiated-dendritic-cell-induction-of-lag3-cd49b-foxp3-regulatory-t%C3%A2-cells
#9
Wojciech Dawicki, Chunyan Li, Jennifer Town, Xiaobei Zhang, John R Gordon
BACKGROUND: Anaphylaxis is a life-threatening condition for which we have limited therapeutic options. Although specific immunotherapy for food allergies is becoming more effective, it is still laborious and carries substantial risk of adverse events. On the other hand, regulatory dendritic cell (DC) therapy is effective in mouse models of allergic disease and has been shown to work with TH2 cells from atopic asthmatic patients. OBJECTIVE: We assessed whether DC immunotherapy could reverse food allergen sensitivity in mouse models to provide proof of concept relating to their use in the clinic...
October 20, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28265470/combination-of-interleukin-27-and-microrna-for-enhancing-expression-of-anti-inflammatory-and-proosteogenic-genes
#10
Manoel Figueiredo Neto, Marxa L Figueiredo
Remission of inflammation has become an achievable goal in inflammatory or rheumatoid arthritis (RA); however, bone erosion continues in many patients. Interleukin- (IL-) 27 regulates immune and bone cell balance and also suppresses activities of several inflammatory cell types in RA. Despite its promise, challenges to clinical translation of IL-27 have been its partial effects in vivo. Due to their ability to modulate plasticity of bone and immune cell differentiation, we examined the potential for several microRNA (miR) candidates in enhancing the effects of IL-27...
2017: Arthritis
https://www.readbyqxmd.com/read/28261215/tnf-blockade-maintains-an-il-10-phenotype-in-human-effector-cd4-and-cd8-t-cells
#11
Ceri A Roberts, Lucy E Durham, Veerle Fleskens, Hayley G Evans, Leonie S Taams
CD4(+) and CD8(+) effector T cell subpopulations can display regulatory potential characterized by expression of the prototypically anti-inflammatory cytokine IL-10. However, the underlying cellular mechanisms that regulate expression of IL-10 in different T cell subpopulations are not yet fully elucidated. We recently showed that TNF inhibitors (TNFi) promote IL-10 expression in human CD4(+) T cells, including IL-17(+) CD4(+) T cells. Here, we further characterized the regulation of IL-10 expression via blockade of TNF signaling or other cytokine/co-stimulatory pathways, in human T cell subpopulations...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28255204/dual-roles-of-il-27-in-cancer-biology-and-immunotherapy
#12
REVIEW
Marina Fabbi, Grazia Carbotti, Silvano Ferrini
IL-27 is a pleiotropic two-chain cytokine, composed of EBI3 and IL-27p28 subunits, which is structurally related to both IL-12 and IL-6 cytokine families. IL-27 acts through a heterodimer receptor consisting of IL-27Rα (WSX1) and gp130 chains, which mediate signaling predominantly through STAT1 and STAT3. IL-27 was initially reported as an immune-enhancing cytokine that supports CD4(+) T cell proliferation, T helper (Th)1 cell differentiation, and IFN-γ production, acting in concert with IL-12. However, subsequent studies demonstrated that IL-27 displays complex immune-regulatory functions, which may result in either proinflammatory or anti-inflammatory effects in relationship to the biological context and experimental models considered...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28240310/interleukin-27-enhances-the-potential-of-reactive-oxygen-species-generation-from-monocyte-derived-macrophages-and-dendritic-cells-by-induction-of-p47-phox
#13
Bharatwaj Sowrirajan, Yoshiro Saito, Deepak Poudyal, Qian Chen, Hongyan Sui, Suk See DeRavin, Hiromi Imamichi, Toyotaka Sato, Douglas B Kuhns, Noriko Noguchi, Harry L Malech, H Clifford Lane, Tomozumi Imamichi
Interleukin (IL)-27, a member of the IL-12 cytokine family, plays an important and diverse role in the function of the immune system. We have previously demonstrated that IL-27 is an anti-viral cytokine which inhibits HIV-1, HIV-2, Influenza virus and herpes simplex virus infection, and enhances the potential of reactive oxygen species (ROS) generating activity during differentiation of monocytes to macrophages. In this study, we further investigated the mechanism of the enhanced potential for ROS generation by IL-27...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28239679/adenovirus-serotype-5-vaccine-vectors-trigger-il-27-dependent-inhibitory-cd4-t-cell-responses-that-impair-cd8-t-cell-function
#14
Rafael A Larocca, Nicholas M Provine, Malika Aid, M Justin Iampietro, Erica N Borducchi, Alexander Badamchi-Zadeh, Peter Abbink, David Ng'ang'a, Christine A Bricault, Eryn Blass, Pablo Penaloza-MacMaster, Kathryn E Stephenson, Dan H Barouch
Adenovirus serotype 5 (Ad5) vaccine vectors elicit robust CD8(+) T cell responses, but these responses typically exhibit a partially exhausted phenotype. However, the immunologic mechanism by which Ad5 vectors induce dysfunctional CD8(+) T cells has not previously been elucidated. Here we demonstrate that, following immunization of B6 mice, Ad5 vectors elicit antigen-specific IL-10(+)CD4(+) T cells with a distinct transcriptional profile in a dose-dependent fashion. In rhesus monkeys, we similarly observed upregulated expression of IL-10 and PD-1 by CD4(+) T cells following Ad5 vaccination...
November 2016: Science Immunology
https://www.readbyqxmd.com/read/28194431/polyfunctional-and-ifn-%C3%AE-monofunctional-human-cd4-t-cell-populations-are-molecularly-distinct
#15
Julie G Burel, Simon H Apte, Penny L Groves, James S McCarthy, Denise L Doolan
Pathogen-specific polyfunctional T cell responses have been associated with favorable clinical outcomes, but it is not known whether molecular differences exist between polyfunctional and monofunctional cytokine-producing T cells. Here, we report that polyfunctional CD4(+) T cells induced during Plasmodiumfalciparum (P. falciparum) blood-stage infection in humans have a unique transcriptomic profile compared with IFN-γ monofunctional CD4(+) T cells and, thus, are molecularly distinct. The 14-gene signature revealed in P...
February 9, 2017: JCI Insight
https://www.readbyqxmd.com/read/28194021/type-i-ifn-augments-il-27-dependent-trim25-expression-to-inhibit-hbv-replication
#16
Guangyun Tan, Qingfei Xiao, Hongxiao Song, Feng Ma, Fengchao Xu, Di Peng, Na Li, Xiaosong Wang, Junqi Niu, Pujun Gao, F Xiao-Feng Qin, Genhong Cheng
Hepatitis B virus (HBV) can cause chronic hepatitis B, which may lead to cirrhosis and liver cancer. Type I interferon (IFN) is an approved drug for the treatment of chronic hepatitis B. However, the fundamental mechanisms of antiviral action by type I IFN and the downstream signaling pathway are unclear. TRIM25 is an IFN-stimulated gene (ISG) that has an important role in RIG-I ubiquitination and activation. Whether TRIM25 is induced in liver cells by type I IFN to mediate anti-HBV function remains unclear...
February 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28167198/analysis-of-serum-interleukin-27-and-interleukin-35-concentrations-in-patients-with-guillain-barr%C3%A3-syndrome
#17
Lin-Jie Zhang, Hui-Yue Guo, Da-Qi Zhang, Rong Wang, Ting Li, Li-Min Li, Dong-Mei Suo, Li Yang
BACKGROUNDS: Guillain-Barré syndrome (GBS) is a postinfectious immune-mediated peripheral neuropathy. Interleukin (IL)-27 and IL-35 have been recognized as novel members of IL-12 family. We evaluated the serum and cerebral spinal fluid (CFS) concentrations of IL-27 and IL-35 in GBS and analyze their correlations with clinical characteristics. METHODS: Serum samples from 50 patients with GBS including 9 acute inflammatory demyelinating polyradiculoneuropathy (AIDP), 33 acute motor axonal neuropathy (AMAN) and 8 unclassified and 35 age- and sex-matched healthy controls were collected...
February 4, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28166218/critical-role-of-irf1-and-batf-in-forming-chromatin-landscape-during-type-1-regulatory-cell-differentiation
#18
Katarzyna Karwacz, Emily R Miraldi, Maria Pokrovskii, Asaf Madi, Nir Yosef, Ivo Wortman, Xi Chen, Aaron Watters, Nicholas Carriero, Amit Awasthi, Aviv Regev, Richard Bonneau, Dan Littman, Vijay K Kuchroo
Type 1 regulatory T cells (Tr1 cells) are induced by interleukin-27 (IL-27) and have critical roles in the control of autoimmunity and resolution of inflammation. We found that the transcription factors IRF1 and BATF were induced early on after treatment with IL-27 and were required for the differentiation and function of Tr1 cells in vitro and in vivo. Epigenetic and transcriptional analyses revealed that both transcription factors influenced chromatin accessibility and expression of the genes required for Tr1 cell function...
April 2017: Nature Immunology
https://www.readbyqxmd.com/read/28157677/il-27-a-new-target-for-gvhd-prevention
#19
Daniel H Fowler, Shoba Amarnath
No abstract text is available yet for this article.
October 20, 2016: Blood
https://www.readbyqxmd.com/read/28154569/regulation-of-nk-cell-activation-and-effector-functions-by-the-il-12-family-of-cytokines-the-case-of-il-27
#20
REVIEW
Norberto Walter Zwirner, Andrea Ziblat
Natural killer (NK) cells are characterized by their ability to detect and induce apoptosis of susceptible target cells and by secretion of immunoregulatory cytokines such as IFN-γ. Activation of these effector functions is triggered upon recognition of tumor and pathogen (mostly virus)-infected cells and because of a bidirectional cross talk that NK cells establish with other cells of myeloid origin such as dendritic cells (DC) and macrophages. A common characteristic of these myeloid cells is their ability to secrete different members of the IL-12 family of cytokines such as IL-12, IL-23, and IL-27 and cytokines such as IL-15 and IL-18...
2017: Frontiers in Immunology
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