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  • 1
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    Deubiquitinase DUBA is a post-translational brake on interleukin-17 production in T cells (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-12-04
    Description: T-helper type 17 (TH17) cells that produce the cytokines interleukin-17A (IL-17A) and IL-17F are implicated in the pathogenesis of several autoimmune diseases. The differentiation of TH17 cells is regulated by transcription factors such as RORgammat, but post-translational mechanisms preventing the rampant production of pro-inflammatory IL-17A have received less attention. Here we show that the deubiquitylating enzyme DUBA is a negative regulator of IL-17A production in T cells. Mice with DUBA-deficient T cells developed exacerbated inflammation in the small intestine after challenge with anti-CD3 antibodies. DUBA interacted with the ubiquitin ligase UBR5, which suppressed DUBA abundance in naive T cells. DUBA accumulated in activated T cells and stabilized UBR5, which then ubiquitylated RORgammat in response to TGF-beta signalling. Our data identify DUBA as a cell-intrinsic suppressor of IL-17 production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rutz, Sascha -- Kayagaki, Nobuhiko -- Phung, Qui T -- Eidenschenk, Celine -- Noubade, Rajkumar -- Wang, Xiaoting -- Lesch, Justin -- Lu, Rongze -- Newton, Kim -- Huang, Oscar W -- Cochran, Andrea G -- Vasser, Mark -- Fauber, Benjamin P -- DeVoss, Jason -- Webster, Joshua -- Diehl, Lauri -- Modrusan, Zora -- Kirkpatrick, Donald S -- Lill, Jennie R -- Ouyang, Wenjun -- Dixit, Vishva M -- England -- Nature. 2015 Feb 19;518(7539):417-21. doi: 10.1038/nature13979. Epub 2014 Dec 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Physiological Chemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Protein Chemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Early Discovery Biochemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Discovery Chemistry, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Molecular Biology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25470037" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Enzyme Stability ; Female ; Inflammation/genetics/pathology ; Interleukin-17/*biosynthesis ; Intestine, Small/metabolism/pathology ; Lymphocyte Activation ; Mice ; Mice, Inbred C57BL ; Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism ; Proteasome Endopeptidase Complex/metabolism ; Protein Binding ; *Protein Biosynthesis ; Signal Transduction ; Substrate Specificity ; Th17 Cells/*metabolism ; Transforming Growth Factor beta/metabolism ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitin-Specific Proteases/biosynthesis/deficiency/genetics/*metabolism ; Ubiquitination
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Interleukin-22 alleviates metabolic disorders and restores mucosal immunity in diabetes (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-08-15
    Description: The connection between an altered gut microbiota and metabolic disorders such as obesity, diabetes, and cardiovascular disease is well established. Defects in preserving the integrity of the mucosal barriers can result in systemic endotoxaemia that contributes to chronic low-grade inflammation, which further promotes the development of metabolic syndrome. Interleukin (IL)-22 exerts essential roles in eliciting antimicrobial immunity and maintaining mucosal barrier integrity within the intestine. Here we investigate the connection between IL-22 and metabolic disorders. We find that the induction of IL-22 from innate lymphoid cells and CD4(+) T cells is impaired in obese mice under various immune challenges, especially in the colon during infection with Citrobacter rodentium. While innate lymphoid cell populations are largely intact in obese mice, the upregulation of IL-23, a cytokine upstream of IL-22, is compromised during the infection. Consequently, these mice are susceptible to C. rodentium infection, and both exogenous IL-22 and IL-23 are able to restore the mucosal host defence. Importantly, we further unveil unexpected functions of IL-22 in regulating metabolism. Mice deficient in IL-22 receptor and fed with high-fat diet are prone to developing metabolic disorders. Strikingly, administration of exogenous IL-22 in genetically obese leptin-receptor-deficient (db/db) mice and mice fed with high-fat diet reverses many of the metabolic symptoms, including hyperglycaemia and insulin resistance. IL-22 shows diverse metabolic benefits, as it improves insulin sensitivity, preserves gut mucosal barrier and endocrine functions, decreases endotoxaemia and chronic inflammation, and regulates lipid metabolism in liver and adipose tissues. In summary, we identify the IL-22 pathway as a novel target for therapeutic intervention in metabolic diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Xiaoting -- Ota, Naruhisa -- Manzanillo, Paolo -- Kates, Lance -- Zavala-Solorio, Jose -- Eidenschenk, Celine -- Zhang, Juan -- Lesch, Justin -- Lee, Wyne P -- Ross, Jed -- Diehl, Lauri -- van Bruggen, Nicholas -- Kolumam, Ganesh -- Ouyang, Wenjun -- England -- Nature. 2014 Oct 9;514(7521):237-41. doi: 10.1038/nature13564. Epub 2014 Aug 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Immunology, Genentech, South San Francisco, California 94080, USA [2]. ; Department of Immunology, Genentech, South San Francisco, California 94080, USA. ; Department of Biomedical Imaging, Genentech, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech, South San Francisco, California 94080, USA. ; 1] Department of Biomedical Imaging, Genentech, South San Francisco, California 94080, USA [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25119041" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue, White/drug effects/metabolism ; Animals ; CD4-Positive T-Lymphocytes/immunology/secretion ; Chronic Disease ; Citrobacter rodentium/drug effects/immunology/physiology ; Colon/drug effects/immunology/microbiology ; Diabetes Mellitus/*immunology/*metabolism/pathology ; Diet, High-Fat ; Female ; Hyperglycemia/diet therapy/drug therapy/metabolism ; *Immunity, Mucosal/drug effects ; Inflammation/drug therapy/metabolism/pathology ; Insulin/metabolism ; Insulin Resistance ; Interleukin-23/immunology/metabolism/pharmacology ; Interleukins/*immunology/*metabolism/pharmacology/therapeutic use ; Lipid Metabolism/drug effects ; Liver/drug effects/metabolism ; Male ; Metabolic Diseases/diet therapy/drug therapy/*metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Obesity/metabolism ; Receptors, Interleukin/deficiency/metabolism ; Receptors, Leptin/deficiency/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    NRROS negatively regulates reactive oxygen species during host defence and autoimmunity (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-04-18
    Description: Reactive oxygen species (ROS) produced by phagocytes are essential for host defence against bacterial and fungal infections. Individuals with defective ROS production machinery develop chronic granulomatous disease. Conversely, excessive ROS can cause collateral tissue damage during inflammatory processes and therefore needs to be tightly regulated. Here we describe a protein, we termed negative regulator of ROS (NRROS), which limits ROS generation by phagocytes during inflammatory responses. NRROS expression in phagocytes can be repressed by inflammatory signals. NRROS-deficient phagocytes produce increased ROS upon inflammatory challenges, and mice lacking NRROS in their phagocytes show enhanced bactericidal activity against Escherichia coli and Listeria monocytogenes. Conversely, these mice develop severe experimental autoimmune encephalomyelitis owing to oxidative tissue damage in the central nervous system. Mechanistically, NRROS is localized to the endoplasmic reticulum, where it directly interacts with nascent NOX2 (also known as gp91(phox) and encoded by Cybb) monomer, one of the membrane-bound subunits of the NADPH oxidase complex, and facilitates the degradation of NOX2 through the endoplasmic-reticulum-associated degradation pathway. Thus, NRROS provides a hitherto undefined mechanism for regulating ROS production--one that enables phagocytes to produce higher amounts of ROS, if required to control invading pathogens, while minimizing unwanted collateral tissue damage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noubade, Rajkumar -- Wong, Kit -- Ota, Naruhisa -- Rutz, Sascha -- Eidenschenk, Celine -- Valdez, Patricia A -- Ding, Jiabing -- Peng, Ivan -- Sebrell, Andrew -- Caplazi, Patrick -- DeVoss, Jason -- Soriano, Robert H -- Sai, Tao -- Lu, Rongze -- Modrusan, Zora -- Hackney, Jason -- Ouyang, Wenjun -- England -- Nature. 2014 May 8;509(7499):235-9. doi: 10.1038/nature13152. Epub 2014 Apr 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Immunology, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, USA [2] Flexus Biosciences, 75 Shoreway Road, Suite D, San Carlos, California 94070, USA (R.N.); American Society for Biochemistry and Molecular Biology, 11200 Rockville Pike, Suite 302, Rockville, Maryland 20852, USA (P.A.V.). ; Department of Immunology, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Pathology, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Molecular Biology, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Department of Bioinformatics, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24739962" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmunity/genetics ; Bone Marrow Cells/cytology ; Central Nervous System/metabolism/pathology ; Encephalomyelitis, Autoimmune, Experimental/*immunology/*metabolism/pathology ; Endoplasmic Reticulum/enzymology/metabolism ; Escherichia coli/*immunology ; Female ; Inflammation/immunology/metabolism/pathology ; Listeria monocytogenes/*immunology ; Macrophages/cytology/enzymology/immunology/metabolism ; Male ; Mice ; NADPH Oxidase/metabolism ; Oxidation-Reduction ; Oxidative Stress ; Phagocytes/cytology/immunology/metabolism ; Proteins/genetics/*metabolism ; Reactive Oxygen Species/*antagonists & inhibitors/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    Herpes simplex virus encephalitis in human UNC-93B deficiency (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-09-16
    Description: Herpes simplex virus-1 (HSV-1) encephalitis (HSE) is the most common form of sporadic viral encephalitis in western countries. Its pathogenesis remains unclear, as it affects otherwise healthy patients and only a small minority of HSV-1-infected individuals. Here, we elucidate a genetic etiology for HSE in two children with autosomal recessive deficiency in the intracellular protein UNC-93B, resulting in impaired cellular interferon-alpha/beta and -lambda antiviral responses. HSE can result from a single-gene immunodeficiency that does not compromise immunity to most pathogens, unlike most known primary immunodeficiencies. Other severe infectious diseases may also reflect monogenic disorders of immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Casrouge, Armanda -- Zhang, Shen-Ying -- Eidenschenk, Celine -- Jouanguy, Emmanuelle -- Puel, Anne -- Yang, Kun -- Alcais, Alexandre -- Picard, Capucine -- Mahfoufi, Nora -- Nicolas, Nathalie -- Lorenzo, Lazaro -- Plancoulaine, Sabine -- Senechal, Brigitte -- Geissmann, Frederic -- Tabeta, Koichi -- Hoebe, Kasper -- Du, Xin -- Miller, Richard L -- Heron, Benedicte -- Mignot, Cyril -- de Villemeur, Thierry Billette -- Lebon, Pierre -- Dulac, Olivier -- Rozenberg, Flore -- Beutler, Bruce -- Tardieu, Marc -- Abel, Laurent -- Casanova, Jean-Laurent -- G0900867/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2006 Oct 13;314(5797):308-12. Epub 2006 Sep 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Humaine des Maladies Infectieuses, Universite de Paris Rene Descartes, INSERM, U550, Faculte de Medecine Necker, Paris 75015, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16973841" target="_blank"〉PubMed〈/a〉
    Keywords: Child, Preschool ; Cytokines/biosynthesis ; Encephalitis, Herpes Simplex/*genetics/immunology ; Female ; *Genetic Predisposition to Disease ; *Herpesvirus 1, Human/immunology ; Humans ; Infant ; Interferon-alpha/biosynthesis/immunology ; Interferon-beta/biosynthesis/immunology ; Interferon-gamma/biosynthesis/immunology ; Interferons/*biosynthesis/immunology ; Leukocytes, Mononuclear/immunology ; Male ; Membrane Transport Proteins/*deficiency/genetics/*physiology ; Mutation ; Pedigree ; Signal Transduction ; Toll-Like Receptor 3/agonists/physiology ; Toll-Like Receptors/agonists/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Inflammation and autoimmunity caused by a SHP1 mutation depend on IL-1, MyD88, and a microbial trigger (2008)
    National Academy of Sciences
    Details
    Publication Date: 2008-09-19
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 6
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    A mutation of Ikbkg causes immune deficiency without impairing degradation of I B  (2010)
    National Academy of Sciences
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    Publication Date: 2010-01-28
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    Flt3 permits survival during infection by rendering dendritic cells competent to activate NK cells (2010)
    National Academy of Sciences
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    Publication Date: 2010-05-10
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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