101
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TYK2 in Tumor Immunosurveillance. Cancers (Basel) 2020; 12:cancers12010150. [PMID: 31936322 PMCID: PMC7017180 DOI: 10.3390/cancers12010150] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/20/2019] [Accepted: 12/25/2019] [Indexed: 12/11/2022] Open
Abstract
We review the history of the tyrosine kinase 2 (TYK2) as the founding member of the Janus kinase (JAK) family and outline its structure-function relation. Gene-targeted mice and hereditary defects of TYK2 in men have established the biological and pathological functions of TYK2 in innate and adaptive immune responses to infection and cancer and in (auto-)inflammation. We describe the architecture of the main cytokine receptor families associated with TYK2, which activate signal transducers and activators of transcription (STATs). We summarize the cytokine receptor activities with well characterized dependency on TYK2, the types of cells that respond to cytokines and TYK2 signaling-induced cytokine production. TYK2 may drive beneficial or detrimental activities, which we explain based on the concepts of tumor immunoediting and the cancer-immunity cycle in the tumor microenvironment. Finally, we summarize current knowledge of TYK2 functions in mouse models of tumor surveillance. The biology and biochemistry of JAKs, TYK2-dependent cytokines and cytokine signaling in tumor surveillance are well covered in recent reviews and the oncogenic properties of TYK2 are reviewed in the recent Special Issue ‘Targeting STAT3 and STAT5 in Cancer’ of Cancers.
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102
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Zhang X, Liang Z, Zhang Y, Dai K, Zhu M, Wang J, Hu X. Comprehensive analysis of long non-coding RNAs expression pattern in the pathogenesis of pulmonary tuberculosis. Genomics 2019; 112:1970-1977. [PMID: 31756428 DOI: 10.1016/j.ygeno.2019.11.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 10/17/2019] [Accepted: 11/16/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) play crucial roles in the progression and pathogenesis of cancer. Right now, less is known about the association between the expression of lncRNAs and the pathogenesis of pulmonary tuberculosis (PTB). METHODS In present study, the expression profiles of lncRNAs were investigated by transcriptome sequencing from PTB patients vs. healthy individuals. RESULTS A total of 449 differentially expressed (DE) (fold change ≥2, false discovery rate ≤ 0.05) lncRNAs were screened out from the PTB patients. Lnc-HNRNPU-1:7 and lnc-FAM76B-4:1 was found the most upregulated lncRNAs and downregulated lncRNAs in PTB patients, respectively. GO annotation and KEGG analysis were used to explore the potential roles of these DE lncRNAs. The JAK/STAT and TGF-β signaling pathways related to PTB pathogenesis were enriched in PTB patients. The co-expressed of a few lncRNAs and mRNAs on chromosome were shown by cis-regulatory gene analysis. Trans analysis indicated that STAT1, STAT2 and TAF7 transcription factors regulated the expression of lncRNA and mRNA. The constructed lncRNA ceRNA network suggested that lncRNAs regulating mRNAs expression may mediate by sponged miRNAs. CONCLUSION We comprehensively analyzed the expression profiles of lncRNAs in PTB patients, thus providing new clues for exploring the regulatory mechanisms of dysregulated lncRNAs in the pathogenesis of PTB.
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Affiliation(s)
- Xing Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Zi Liang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Yunshan Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Kun Dai
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Min Zhu
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China
| | - Ji Wang
- Department of Oncology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China.
| | - Xiaolong Hu
- School of Biology & Basic Medical Science, Soochow University, Suzhou 215123, China.
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103
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Singaravelu R, Ahmed N, Quan C, Srinivasan P, Ablenas CJ, Roy DG, Pezacki JP. A conserved miRNA-183 cluster regulates the innate antiviral response. J Biol Chem 2019; 294:19785-19794. [PMID: 31694919 DOI: 10.1074/jbc.ra119.010858] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/23/2019] [Indexed: 12/24/2022] Open
Abstract
Upon immune recognition of viruses, the mammalian innate immune response activates a complex signal transduction network to combat infection. This activation requires phosphorylation of key transcription factors regulating IFN production and signaling, including IFN regulatory factor 3 (IRF3) and STAT1. The mechanisms regulating these STAT1 and IRF3 phosphorylation events remain unclear. Here, using human and mouse cell lines along with gene microarrays, quantitative RT-PCR, viral infection and plaque assays, and reporter gene assays, we demonstrate that a microRNA cluster conserved among bilaterian animals, encoding miR-96, miR-182, and miR-183, regulates IFN signaling. In particular, we observed that the miR-183 cluster promotes IFN production and signaling, mediated by enhancing IRF3 and STAT1 phosphorylation. We also found that the miR-183 cluster activates the IFN pathway and inhibits vesicular stomatitis virus infection by directly targeting several negative regulators of IRF3 and STAT1 activities, including protein phosphatase 2A (PPP2CA) and tripartite motif-containing 27 (TRIM27). Overall, our work reveals an important role of the evolutionarily conserved miR-183 cluster in the regulation of mammalian innate immunity.
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Affiliation(s)
- Ragunath Singaravelu
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Nadine Ahmed
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Curtis Quan
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Prashanth Srinivasan
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Christopher J Ablenas
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Dominic G Roy
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - John Paul Pezacki
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada .,Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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104
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Ho MF, Zhang C, Zhang L, Li H, Weinshilboum RM. Ketamine and Active Ketamine Metabolites Regulate STAT3 and the Type I Interferon Pathway in Human Microglia: Molecular Mechanisms Linked to the Antidepressant Effects of Ketamine. Front Pharmacol 2019; 10:1302. [PMID: 31827434 PMCID: PMC6848891 DOI: 10.3389/fphar.2019.01302] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 10/11/2019] [Indexed: 11/13/2022] Open
Abstract
Inflammation is an important biological process which contributes to risk for depression, in part as a result of the production of proinflammatory cytokines and of alterations in glutamatergic neurotransmission. Ketamine has anti-inflammatory properties which might contribute to its antidepressant effects. This study was designed to clarify mechanisms of action for ketamine and its active metabolites, (2R,6R;2S,6S)-hydroxynorketamine (HNK), which also appear to play a major role in ketamine's rapid antidepressant effects. An HMC3 human microglial cell line was used as a model system to test a possible role for ketamine in immune response regulation that might contribute to its antidepressant effects. Our results highlight the fact that ketamine and its two active metabolites can regulate the type I interferon pathway mediated, at least partially, through signal transducer and activation of transcription 3 (STAT3) which plays a major role in the immune response. Specifically, STAT3 downstream genes that were modulated by either ketamine or its active metabolites were enriched in the "response to type I interferon" pathway. Our data also suggest that STAT3 might play a role in ketamine's antidepressant effects, mediated, at least in part, through eukaryotic elongation factor 2 (EEF2), resulting in the augmentation of brain-derived neurotropic factor (BDNF) expression and promoting the synthesis of synaptic proteins postsynaptic density protein 95 (PSD95) and synapsin I (SYN1).
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Affiliation(s)
- Ming-Fen Ho
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, United States
| | - Cheng Zhang
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, United States
| | - Lingxin Zhang
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, United States
| | - Hu Li
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, United States
| | - Richard M Weinshilboum
- Division of Clinical Pharmacology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, United States
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105
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Wang H, Yuan M, Wang S, Zhang L, Zhang R, Zou X, Wang X, Chen D, Wu Z. STAT3 Regulates the Type I IFN-Mediated Antiviral Response by Interfering with the Nuclear Entry of STAT1. Int J Mol Sci 2019; 20:ijms20194870. [PMID: 31575039 PMCID: PMC6801597 DOI: 10.3390/ijms20194870] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/24/2019] [Accepted: 09/28/2019] [Indexed: 12/15/2022] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) is a multifunctional factor that regulates inflammation and immunity. Knowledge of its regulatory mechanisms is very limited. Here, we showed that enterovirus 71 (EV71) infection induced the phosphorylation of STAT3 and the expression of its downstream inflammatory regulators. Knockdown of STAT3 with siRNAs significantly restricted viral RNA and protein levels, and also reduced viral titers. With further investigation, we found that importin α family member Karyopherin-α1 (KPNA1) was employed by both STAT1 and STAT3 for their nuclear import. The phosphorylated and un-phosphorylated STAT3 competed with STAT1 for binding to the decreased KPNA1 post infection and repressed downstream ISG expression. STAT3 knockdown alleviated the repressed type I IFN-mediated antiviral response upon infection and led to decreased viral replication. Taken together, our data suggested the role of STAT3 in maintaining the balance of inflammation and antiviral responses in the central nervous system (CNS) upon infection.
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Affiliation(s)
- Huanru Wang
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
| | - Meng Yuan
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
| | - Shuaibo Wang
- Jinling College, Nanjing University, Nanjing 210089, China.
| | - Li Zhang
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
| | - Rui Zhang
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
| | - Xue Zou
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
| | - Xiaohui Wang
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China.
| | - Deyan Chen
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
| | - Zhiwei Wu
- Center for Public Health Research, Medical School, Nanjing University, Nanjing 210093, China.
- State Key Lab of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210023, China.
- Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, China.
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106
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Mariani MK, Dasmeh P, Fortin A, Caron E, Kalamujic M, Harrison AN, Hotea DI, Kasumba DM, Cervantes-Ortiz SL, Mukawera E, Serohijos AWR, Grandvaux N. The Combination of IFN β and TNF Induces an Antiviral and Immunoregulatory Program via Non-Canonical Pathways Involving STAT2 and IRF9. Cells 2019; 8:cells8080919. [PMID: 31426476 PMCID: PMC6721756 DOI: 10.3390/cells8080919] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/12/2019] [Accepted: 08/14/2019] [Indexed: 12/21/2022] Open
Abstract
Interferon (IFN) β and Tumor Necrosis Factor (TNF) are key players in immunity against viruses. Compelling evidence has shown that the antiviral and inflammatory transcriptional response induced by IFNβ is reprogrammed by crosstalk with TNF. IFNβ mainly induces interferon-stimulated genes by the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway involving the canonical ISGF3 transcriptional complex, composed of STAT1, STAT2, and IRF9. The signaling pathways engaged downstream of the combination of IFNβ and TNF remain elusive, but previous observations suggested the existence of a response independent of STAT1. Here, using genome-wide transcriptional analysis by RNASeq, we observed a broad antiviral and immunoregulatory response initiated in the absence of STAT1 upon IFNβ and TNF costimulation. Additional stratification of this transcriptional response revealed that STAT2 and IRF9 mediate the expression of a wide spectrum of genes. While a subset of genes was regulated by the concerted action of STAT2 and IRF9, other gene sets were independently regulated by STAT2 or IRF9. Collectively, our data supports a model in which STAT2 and IRF9 act through non-canonical parallel pathways to regulate distinct pool of antiviral and immunoregulatory genes in conditions with elevated levels of both IFNβ and TNF.
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Affiliation(s)
- Mélissa K Mariani
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Pouria Dasmeh
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Centre Robert Cedergren en Bioinformatique et Génomique, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Audray Fortin
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Elise Caron
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Mario Kalamujic
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Alexander N Harrison
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Diana I Hotea
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Dacquin M Kasumba
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Sandra L Cervantes-Ortiz
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Espérance Mukawera
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Adrian W R Serohijos
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Centre Robert Cedergren en Bioinformatique et Génomique, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Nathalie Grandvaux
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada.
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada.
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107
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Zimmerman O, Olbrich P, Freeman AF, Rosen LB, Uzel G, Zerbe CS, Rosenzweig SD, Kuehn HS, Holmes KL, Stephany D, Ding L, Sampaio EP, Hsu AP, Holland SM. STAT1 Gain-of-Function Mutations Cause High Total STAT1 Levels With Normal Dephosphorylation. Front Immunol 2019; 10:1433. [PMID: 31354696 PMCID: PMC6635460 DOI: 10.3389/fimmu.2019.01433] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 06/07/2019] [Indexed: 12/02/2022] Open
Abstract
Signal transducer and activator of transcription (STAT1)1 gain of function (GOF) pathogenic variants have been associated with increased levels of phosphorylated STAT1 and STAT1-dependent cellular responses. Delayed dephosphorylation was proposed as the underlying mechanism leading to the characteristically raised pSTAT1 levels. We examined the levels of STAT1 protein and message as well as rates of STAT1 phosphorylation, dephosphorylation, and degradation associated with STAT1 GOF pathogenic variants. Fresh peripheral blood mononuclear cells (PBMC) from 14 STAT1 GOF patients carrying 10 different pathogenic variants in the coiled-coil, DNA binding, and SH2 domains and healthy donors were used to study STAT1 levels and phosphorylation (pSTAT1) following IFNγ and IFNα stimulation. STAT1 protein levels were measured by flow cytometry and immunoblot. STAT1 mRNA levels were measured using quantitative reverse transcription PCR. STAT1 protein degradation was studied using cycloheximide. Patient IFNγ and IFNα induced peak pSTAT1 was higher than in healthy controls. The velocity of pSTAT1 dephosphorylation after treatment of IFNγ stimulated CD14+ monocytes with the Janus Kinase (JAK)-inhibitor ruxolitinib was significantly faster in patient cells. STAT1 protein levels in patient CD14+ monocytes and CD3+ T cells were higher than in healthy donors. There was a strong and positive correlation between CD14+ STAT1 protein levels and peak pSTAT1 levels. Patient fresh PBMC STAT1 mRNA levels were increased at rest and after 16 h of incubation. STAT1 protein degradation was similar in patient and healthy volunteer cells. Patient IFNγ receptors 1 and 2 and JAK2 levels were normal. One patient in our cohort was treated with the oral JAK inhibitor ruxolitinib. Treatment was associated with normalization of both STAT1 protein and peak pSTAT1 levels. After JAK inhibitor treatment was stopped the patient's CD14+ monocyte STAT1 protein and peak phosphorylation levels increased proportionally. These findings suggest that patients with STAT1 GOF mutations have higher levels of total STAT1 protein, leading to high levels of pSTAT1 after stimulation, despite rapid STAT1 dephosphorylation and normal degradation.
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Affiliation(s)
- Ofer Zimmerman
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Peter Olbrich
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States.,Sección de Infectología, Reumatología e Inmunología Pediátrica (SIRIP), Hospital Infantil Virgen del Rocío, Instituto de Biomedicina de Sevilla (IBiS), Seville, Spain
| | - Alexandra F Freeman
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Lindsey B Rosen
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Gulbu Uzel
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Christa S Zerbe
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Sergio D Rosenzweig
- Immunology Service, Department of Laboratory Medicine, National Institutes Clinical Center, National Institutes of Health, Bethesda, MD, United States
| | - Hye Sun Kuehn
- Immunology Service, Department of Laboratory Medicine, National Institutes Clinical Center, National Institutes of Health, Bethesda, MD, United States
| | - Kevin L Holmes
- Flow Cytometry Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - David Stephany
- Flow Cytometry Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Li Ding
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Elizabeth P Sampaio
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Amy P Hsu
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Steven M Holland
- Laboratory of Clinical Immunology and Microbiology, Immunopathogenesis Section, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
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108
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Platanitis E, Demiroz D, Schneller A, Fischer K, Capelle C, Hartl M, Gossenreiter T, Müller M, Novatchkova M, Decker T. A molecular switch from STAT2-IRF9 to ISGF3 underlies interferon-induced gene transcription. Nat Commun 2019; 10:2921. [PMID: 31266943 PMCID: PMC6606597 DOI: 10.1038/s41467-019-10970-y] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 06/11/2019] [Indexed: 01/12/2023] Open
Abstract
Cells maintain the balance between homeostasis and inflammation by adapting and integrating the activity of intracellular signaling cascades, including the JAK-STAT pathway. Our understanding of how a tailored switch from homeostasis to a strong receptor-dependent response is coordinated remains limited. Here, we use an integrated transcriptomic and proteomic approach to analyze transcription-factor binding, gene expression and in vivo proximity-dependent labelling of proteins in living cells under homeostatic and interferon (IFN)-induced conditions. We show that interferons (IFN) switch murine macrophages from resting-state to induced gene expression by alternating subunits of transcription factor ISGF3. Whereas preformed STAT2-IRF9 complexes control basal expression of IFN-induced genes (ISG), both type I IFN and IFN-γ cause promoter binding of a complete ISGF3 complex containing STAT1, STAT2 and IRF9. In contrast to the dogmatic view of ISGF3 formation in the cytoplasm, our results suggest a model wherein the assembly of the ISGF3 complex occurs on DNA.
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Affiliation(s)
| | - Duygu Demiroz
- Max Perutz Labs (MPL), University of Vienna, Vienna, 1030, Austria
| | - Anja Schneller
- Max Perutz Labs (MPL), University of Vienna, Vienna, 1030, Austria
| | - Katrin Fischer
- Max Perutz Labs (MPL), University of Vienna, Vienna, 1030, Austria
| | | | - Markus Hartl
- Max Perutz Labs (MPL), University of Vienna, Vienna, 1030, Austria
| | | | - Mathias Müller
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, 1210, Austria
| | - Maria Novatchkova
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Vienna, 1030, Austria
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Vienna, 1030, Austria
| | - Thomas Decker
- Max Perutz Labs (MPL), University of Vienna, Vienna, 1030, Austria.
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109
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Combating viral contaminants in CHO cells by engineering innate immunity. Sci Rep 2019; 9:8827. [PMID: 31222165 PMCID: PMC6586939 DOI: 10.1038/s41598-019-45126-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 05/31/2019] [Indexed: 12/19/2022] Open
Abstract
Viral contamination in biopharmaceutical manufacturing can lead to shortages in the supply of critical therapeutics. To facilitate the protection of bioprocesses, we explored the basis for the susceptibility of CHO cells to RNA virus infection. Upon infection with certain ssRNA and dsRNA viruses, CHO cells fail to generate a significant interferon (IFN) response. Nonetheless, the downstream machinery for generating IFN responses and its antiviral activity is intact in these cells: treatment of cells with exogenously-added type I IFN or poly I:C prior to infection limited the cytopathic effect from Vesicular stomatitis virus (VSV), Encephalomyocarditis virus (EMCV), and Reovirus-3 virus (Reo-3) in a STAT1-dependent manner. To harness the intrinsic antiviral mechanism, we used RNA-Seq to identify two upstream repressors of STAT1: Gfi1 and Trim24. By knocking out these genes, the engineered CHO cells exhibited activation of cellular immune responses and increased resistance to the RNA viruses tested. Thus, omics-guided engineering of mammalian cell culture can be deployed to increase safety in biotherapeutic protein production among many other biomedical applications.
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110
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Convery O, Gargan S, Kickham M, Schroder M, O'Farrelly C, Stevenson NJ. The hepatitis C virus (HCV) protein, p7, suppresses inflammatory responses to tumor necrosis factor (TNF)-α via signal transducer and activator of transcription (STAT)3 and extracellular signal-regulated kinase (ERK)-mediated induction of suppressor of cytokine signaling (SOCS)3. FASEB J 2019; 33:8732-8744. [PMID: 31163989 DOI: 10.1096/fj.201800629rr] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Viruses use a spectrum of immune evasion strategies that enable infection and replication. The acute phase of hepatitis C virus (HCV) infection is characterized by nonspecific and often mild clinical symptoms, suggesting an immunosuppressive mechanism that, unless symptomatic liver disease presents, allows the virus to remain largely undetected. We previously reported that HCV induced the regulatory protein suppressor of cytokine signaling (SOCS)3, which inhibited TNF-α-mediated inflammatory responses. However, the mechanism by which HCV up-regulates SOCS3 remains unknown. Here we show that the HCV protein, p7, enhances both SOCS3 mRNA and protein expression. A p7 inhibitor reduced SOCS3 induction, indicating that p7's ion channel activity was required for optimal up-regulation of SOCS3. Short hairpin RNA and chemical inhibition revealed that both the Janus kinase-signal transducer and activator of transcription (JAK-STAT) and MAPK pathways were required for p7-mediated induction of SOCS3. HCV-p7 expression suppressed TNF-α-mediated IκB-α degradation and subsequent NF-κB promoter activity, revealing a new and functional, anti-inflammatory effect of p7. Together, these findings identify a molecular mechanism by which HCV-p7 induces SOCS3 through STAT3 and ERK activation and demonstrate that p7 suppresses proinflammatory responses to TNF-α, possibly explaining the lack of inflammatory symptoms observed during early HCV infection.-Convery, O., Gargan, S., Kickham, M., Schroder, M., O'Farrelly, C., Stevenson, N. J. The hepatitis C virus (HCV) protein, p7, suppresses inflammatory responses to tumor necrosis factor (TNF)-α via signal transducer and activator of transcription (STAT)3 and extracellular signal-regulated kinase (ERK)-mediated induction of suppressor of cytokine signaling (SOCS)3.
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Affiliation(s)
- Orla Convery
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Siobhan Gargan
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | | | | | - Cliona O'Farrelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.,School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Nigel J Stevenson
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
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111
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Kerry RG, Malik S, Redda YT, Sahoo S, Patra JK, Majhi S. Nano-based approach to combat emerging viral (NIPAH virus) infection. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2019; 18:196-220. [PMID: 30904587 PMCID: PMC7106268 DOI: 10.1016/j.nano.2019.03.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/19/2019] [Accepted: 03/11/2019] [Indexed: 12/28/2022]
Abstract
Emergence of new virus and their heterogeneity are growing at an alarming rate. Sudden outburst of Nipah virus (NiV) has raised serious question about their instant management using conventional medication and diagnostic measures. A coherent strategy with versatility and comprehensive perspective to confront the rising distress could perhaps be effectuated by implementation of nanotechnology. But in concurrent to resourceful and precise execution of nano-based medication, there is an ultimate need of concrete understanding of the NIV pathogenesis. Moreover, to amplify the effectiveness of nano-based approach in a conquest against NiV, a list of developed nanosystem with antiviral activity is also a prerequisite. Therefore the present review provides a meticulous cognizance of cellular and molecular pathogenesis of NiV. Conventional as well several nano-based diagnosis experimentations against viruses have been discussed. Lastly, potential efficacy of different forms of nano-based systems as convenient means to shield mankind against NiV has also been introduced.
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Affiliation(s)
- Rout George Kerry
- Post Graduate Department of Biotechnology, Utkal University, Vani Vihar, Bhubaneswar, Odisha, India
| | - Santosh Malik
- Departmentof Life Science, National Institute of Technology, Rourkela, Odisha, India
| | | | - Sabuj Sahoo
- Post Graduate Department of Biotechnology, Utkal University, Vani Vihar, Bhubaneswar, Odisha, India
| | - Jayanta Kumar Patra
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, Goyangsi, Republic of Korea.
| | - Sanatan Majhi
- Post Graduate Department of Biotechnology, Utkal University, Vani Vihar, Bhubaneswar, Odisha, India.
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112
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Chrisikos TT, Zhou Y, Slone N, Babcock R, Watowich SS, Li HS. Molecular regulation of dendritic cell development and function in homeostasis, inflammation, and cancer. Mol Immunol 2019; 110:24-39. [PMID: 29549977 PMCID: PMC6139080 DOI: 10.1016/j.molimm.2018.01.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 01/04/2018] [Accepted: 01/25/2018] [Indexed: 02/06/2023]
Abstract
Dendritic cells (DCs) are the principal antigen-presenting cells of the immune system and play key roles in controlling immune tolerance and activation. As such, DCs are chief mediators of tumor immunity. DCs can regulate tolerogenic immune responses that facilitate unchecked tumor growth. Importantly, however, DCs also mediate immune-stimulatory activity that restrains tumor progression. For instance, emerging evidence indicates the cDC1 subset has important functions in delivering tumor antigens to lymph nodes and inducing antigen-specific lymphocyte responses to tumors. Moreover, DCs control specific therapeutic responses in cancer including those resulting from immune checkpoint blockade. DC generation and function is influenced profoundly by cytokines, as well as their intracellular signaling proteins including STAT transcription factors. Regardless, our understanding of DC regulation in the cytokine-rich tumor microenvironment is still developing and must be better defined to advance cancer treatment. Here, we review literature focused on the molecular control of DCs, with a particular emphasis on cytokine- and STAT-mediated DC regulation. In addition, we highlight recent studies that delineate the importance of DCs in anti-tumor immunity and immune therapy, with the overall goal of improving knowledge of tumor-associated factors and intrinsic DC signaling cascades that influence DC function in cancer.
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Affiliation(s)
- Taylor T Chrisikos
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, 77030, USA
| | - Yifan Zhou
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Natalie Slone
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA; Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Rachel Babcock
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, 77030, USA
| | - Stephanie S Watowich
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX, 77030, USA.
| | - Haiyan S Li
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
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113
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Targeting Palbociclib-Resistant Estrogen Receptor-Positive Breast Cancer Cells via Oncolytic Virotherapy. Cancers (Basel) 2019; 11:cancers11050684. [PMID: 31100952 PMCID: PMC6563125 DOI: 10.3390/cancers11050684] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 12/26/2022] Open
Abstract
While clinical responses to palbociclib have been promising, metastatic breast cancer remains incurable due to the development of resistance. We generated estrogen receptor-positive (ER+) and ER-negative (ER−) cell line models and determined their permissiveness and cellular responses to an oncolytic adenovirus (OAd) known as Ad5/3-delta24. Analysis of ER+ and ER− palbociclib-resistant cells revealed two clearly distinguishable responses to the OAd. While ER+ palbociclib-resistant cells displayed a hypersensitive phenotype to the effects of the OAd, ER− palbociclib-resistant cells showed a resistant phenotype to the OAd. Hypersensitivity to the OAd in ER+ palbociclib-resistant cells correlated with a decrease in type I interferon (IFN) signaling, an increase in viral entry receptor expression, and an increase in cyclin E expression. OAd resistance in ER− palbociclib-resistant cells correlated with an increase in type I IFN signaling and a marked decrease in viral entry receptor. Using the OAd as monotherapy caused significant cytotoxicity to both ER+ and ER− palbociclib-sensitive cell lines. However, the addition of palbociclib increased the oncolytic activity of the OAd only in ER+ palbociclib-sensitive cells. Our studies provide a mechanistic base for a novel anti-cancer regimen composed of an OAd in combination with palbociclib for the treatment of ER+ breast cancer.
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Abstract
The Interferon regulatory factors (IRFs) are a family of transcription factors that play pivotal roles in many aspects of the immune response, including immune cell development and differentiation and regulating responses to pathogens. Three family members, IRF3, IRF5, and IRF7, are critical to production of type I interferons downstream of pathogen recognition receptors that detect viral RNA and DNA. A fourth family member, IRF9, regulates interferon-driven gene expression. In addition, IRF4, IRF8, and IRF5 regulate myeloid cell development and phenotype, thus playing important roles in regulating inflammatory responses. Thus, understanding how their levels and activity is regulated is of critical importance given that perturbations in either can result in dysregulated immune responses and potential autoimmune disease. This review will focus the role of IRF family members in regulating type I IFN production and responses and myeloid cell development or differentiation, with particular emphasis on how regulation of their levels and activity by ubiquitination and microRNAs may impact autoimmune disease.
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Affiliation(s)
- Caroline A Jefferies
- Department of Medicine, Division of Rheumatology and Department of Biomedical Sciences, Cedars Sinai Medical Center, Los Angeles, CA, United States
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115
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Xu X, Li M, Wu C, Li D, Jiang Z, Liu C, Cheng B, Mao H, Hu C. The Fish-Specific Protein Kinase (PKZ) Initiates Innate Immune Responses via IRF3- and ISGF3-Like Mediated Pathways. Front Immunol 2019; 10:582. [PMID: 30984174 PMCID: PMC6447671 DOI: 10.3389/fimmu.2019.00582] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 03/04/2019] [Indexed: 11/13/2022] Open
Abstract
PKZ is a fish-specific protein kinase containing Zα domains. PKZ is known to induce apoptosis through phosphorylating eukaryotic initiation factor 2α kinase (eIF2α) in the same way as double-stranded RNA-dependent protein kinase (PKR), but its exact role in detecting pathogens remains to be fully elucidated. Herein, we have found that PKZ acts as a fish-specific DNA sensor by initiating IFN expression through IRF3- or ISGF3-like mediated pathways. The expression pattern of PKZ is similar to those of innate immunity mediators stimulated by poly (dA:dT) and poly (dG:dC). DNA-PKZ interaction can enhance PKZ phosphorylation and dimerization in vitro. These findings indicate that PKZ participates in cytoplasmic DNA-mediated signaling. Subcellular localization assays have also shown that PKZ is located in the cytoplasm, which suggests that PKZ acts as a cytoplasmic PRR. Meanwhile, co-IP assays have shown that PKZ can separately interact with IRF3, STING, ZDHHC1, eIF2α, IRF9, and STAT2. Further investigations have revealed that PKZ can activate IRF3 and STAT2; and that IRF3-dependent and ISGF3-like dependent mediators are critical for PKZ-induced IFN expression. These results demonstrate that PKZ acts as a special DNA pattern-recognition receptor, and that PKZ can trigger immune responses through IRF3-mediated or ISGF3-like mediated pathways in fish.
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Affiliation(s)
- Xiaowen Xu
- College of Life Science, Nanchang University, Nanchang, China
| | - Meifeng Li
- College of Life Science, Nanchang University, Nanchang, China
| | - Chuxin Wu
- College of Life Science, Nanchang University, Nanchang, China
| | - Dongming Li
- Fuzhou Medical College, Nanchang University, Fuzhou, China
| | - Zeyin Jiang
- College of Life Science, Nanchang University, Nanchang, China
| | - Changxin Liu
- College of Life Science, Nanchang University, Nanchang, China
| | - Bo Cheng
- College of Life Science, Nanchang University, Nanchang, China
| | - Huiling Mao
- College of Life Science, Nanchang University, Nanchang, China
| | - Chengyu Hu
- College of Life Science, Nanchang University, Nanchang, China
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116
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Song H, Tan G, Yang Y, Cui A, Li H, Li T, Wu Z, Yang M, Lv G, Chi X, Niu J, Zhu K, Crispe IN, Su L, Tu Z. Hepatitis B Virus-Induced Imbalance of Inflammatory and Antiviral Signaling by Differential Phosphorylation of STAT1 in Human Monocytes. THE JOURNAL OF IMMUNOLOGY 2019; 202:2266-2275. [PMID: 30842274 DOI: 10.4049/jimmunol.1800848] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 02/12/2019] [Indexed: 12/14/2022]
Abstract
It is not clear how hepatitis B virus (HBV) modulates host immunity during chronic infection. In addition to the key mediators of inflammatory response in viral infection, monocytes also express a high-level IFN-stimulated gene, CH25H, upon response to IFN-α exerting an antiviral effect. In this study, the mechanism by which HBV manipulates IFN signaling in human monocytes was investigated. We observed that monocytes from chronic hepatitis B patients express lower levels of IFN signaling/stimulated genes and higher levels of inflammatory cytokines compared with healthy donors. HBV induces monocyte production of inflammatory cytokines via TLR2/MyD88/NF-κB signaling and STAT1-Ser727 phosphorylation and inhibits IFN-α-induced stat1, stat2, and ch25h expression through the inhibition of STAT1-Tyr701 phosphorylation and in an IL-10-dependent, partially autocrine manner. Further, we found that enhancement of STAT1 activity with a small molecule (2-NP) rescued HBV-mediated inhibition of IFN signaling and counteracted the induction of inflammatory cytokines. In conclusion, HBV contributes to the monocyte inflammatory response but inhibits their IFN-α/β responsiveness to impair antiviral innate immunity. These effects are mediated via differential phosphorylation of Tyr701 and Ser727 of STAT1.
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Affiliation(s)
- Hongxiao Song
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Guangyun Tan
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Yang Yang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - An Cui
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Haijun Li
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Tianyang Li
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Zhihui Wu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Miaomiao Yang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Guoyue Lv
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Xiumei Chi
- Institute of Liver Diseases, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Junqi Niu
- Institute of Liver Diseases, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Kangshun Zhu
- Department of Minimally Invasive Interventional Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China
| | - Ian Nicholas Crispe
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China.,Department of Pathology, University of Washington, Seattle, WA 98195; and
| | - Lishan Su
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China.,Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Zhengkun Tu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin 130021, China; .,Institute of Liver Diseases, The First Hospital of Jilin University, Changchun, Jilin 130021, China
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Role of Type I Interferons on Filovirus Pathogenesis. Vaccines (Basel) 2019; 7:vaccines7010022. [PMID: 30791589 PMCID: PMC6466283 DOI: 10.3390/vaccines7010022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/06/2019] [Accepted: 02/15/2019] [Indexed: 01/19/2023] Open
Abstract
Filoviruses, such as Ebola and Marburg virus, encode viral proteins with the ability to counteract the type I interferon (IFN-I) response. These IFN-I antagonist proteins are crucial to ensure virus replication, prevent an antiviral state in infected and bystander cells, and impair the ability of antigen-presenting cells to initiate adaptive immune responses. However, in recent years, a number of studies have underscored the conflicting data between in vitro studies and in vivo data obtained in animal models and clinical studies during outbreaks. This review aims to summarize these data and to discuss the relative contributions of IFN-α and IFN-β to filovirus pathogenesis in animal models and humans. Finally, we evaluate the putative utilization of IFN-I in post-exposure therapy and its implications as a biomarker of vaccine efficacy.
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118
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Lo UG, Bao J, Cen J, Yeh HC, Luo J, Tan W, Hsieh JT. Interferon-induced IFIT5 promotes epithelial-to-mesenchymal transition leading to renal cancer invasion. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2019; 7:31-45. [PMID: 30906803 PMCID: PMC6420704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
Interferon is known as a pleiotropic factor in innate immunity, cancer immunity and therapy. Despite an objective short-term response of interferon (IFN) therapy in renal cell carcinoma (RCC) patients, the potential adverse effect of IFN on RCC cells is not fully understood. In this study, we demonstrate that IFNs can enhance RCC invasion via a new mechanism of IFIT5-mediated tumor suppressor microRNA (miRNA) degradation resulted in the elevation of Slug and ZEB1 and epithelial-to-mesenchymal transition (EMT). Clinically, a significant upregulation of IFNγ signaling pathway (such as IFNGR1, IFNGR2, STAT1 and STAT2) is observed in RCC patients with metastatic disease. Overall, this study provides a new mechanism of action of IFN-elicited canonical pathway in regulating suppressor miRNAs. Most importantly, it highlights the potential pro-metastatic effect of IFNs, which could undermine the clinical applicability of IFNs for treating RCC patients.
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Affiliation(s)
- U-Ging Lo
- Department of Urology, University of Texas Southwestern Medical CenterDallas, TX 75390, USA
| | - Jiming Bao
- Department of Urology, Nanfang Hospital, Southern Medical UniversityGuangzhou 510515, Republic of China
| | - Junjie Cen
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen UniversityGuangzhou 510080, Republic of China
| | - Hsin-Chih Yeh
- Department of Urology, University of Texas Southwestern Medical CenterDallas, TX 75390, USA
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University HospitalTaiwan, Republic of China
| | - Junhang Luo
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen UniversityGuangzhou 510080, Republic of China
| | - Wanlong Tan
- Department of Urology, Nanfang Hospital, Southern Medical UniversityGuangzhou 510515, Republic of China
| | - Jer-Tsong Hsieh
- Department of Urology, University of Texas Southwestern Medical CenterDallas, TX 75390, USA
- Department of Biotechnology, Kaohsiung Medical UniversityKaohsiung, Taiwan, Republic of China
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Qin C, Zhang R, Lang Y, Shao A, Xu A, Feng W, Han J, Wang M, He W, Yu C, Tang J. Bclaf1 critically regulates the type I interferon response and is degraded by alphaherpesvirus US3. PLoS Pathog 2019; 15:e1007559. [PMID: 30682178 PMCID: PMC6364948 DOI: 10.1371/journal.ppat.1007559] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 02/06/2019] [Accepted: 01/03/2019] [Indexed: 01/12/2023] Open
Abstract
Type I interferon response plays a prominent role against viral infection, which is frequently disrupted by viruses. Here, we report Bcl-2 associated transcription factor 1 (Bclaf1) is degraded during the alphaherpesvirus Pseudorabies virus (PRV) and Herpes simplex virus type 1 (HSV-1) infections through the viral protein US3. We further reveal that Bclaf1 functions critically in type I interferon signaling. Knockdown or knockout of Bclaf1 in cells significantly impairs interferon-α (IFNα) -mediated gene transcription and viral inhibition against US3 deficient PRV and HSV-1. Mechanistically, Bclaf1 maintains a mechanism allowing STAT1 and STAT2 to be efficiently phosphorylated in response to IFNα, and more importantly, facilitates IFN-stimulated gene factor 3 (ISGF3) binding with IFN-stimulated response elements (ISRE) for efficient gene transcription by directly interacting with ISRE and STAT2. Our studies establish the importance of Bclaf1 in IFNα-induced antiviral immunity and in the control of viral infections. Alphaherpesvirus, such as Pseudorabies virus (PRV) and Herpes simplex virus type 1 (HSV-1), can establish persistent infection and cause various diseases in hosts. Interferon (IFN) response is hosts’ first defense system against viral infection. Here, we report alphaherpesvirus induces degradation of a host protein, Bclaf1, via its expressed viral protein US3 upon infection. We further show that Bclaf1 is a novel regulator of IFN pathway by enhancing the IFN induced transcriptions of anti-viral genes. In the absence of Bclaf1, IFN induced anti-viral activity is greatly reduced. Our study highlight the importance of Bclaf1 in IFN mediated antiviral function and reveal a strategy employed by alphaherpesvirus to counteract hosts’ defense.
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Affiliation(s)
- Chao Qin
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Rui Zhang
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yue Lang
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Anwen Shao
- Department of Microbiology and Immunology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Aotian Xu
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Wenhai Feng
- Department of Microbiology and Immunology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Jun Han
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Mengdong Wang
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Wanwei He
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Cuilian Yu
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jun Tang
- State Key Laboratory of Agrobiotechnology and College of Veterinary Medicine, China Agricultural University, Beijing, China
- * E-mail:
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120
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Lee S, Son WS, Yang HB, Rajasekaran N, Kim SS, Hong S, Choi JS, Choi JY, Song K, Shin YK. A Glycoengineered Interferon-β Mutein (R27T) Generates Prolonged Signaling by an Altered Receptor-Binding Kinetics. Front Pharmacol 2019; 9:1568. [PMID: 30733680 PMCID: PMC6353837 DOI: 10.3389/fphar.2018.01568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/24/2018] [Indexed: 12/15/2022] Open
Abstract
The glycoengineering approach is used to improve biophysical properties of protein-based drugs, but its direct impact on binding affinity and kinetic properties for the glycoengineered protein and its binding partner interaction is unclear. Type I interferon (IFN) receptors, composed of IFNAR1 and IFNAR2, have different binding strengths, and sequentially bind to IFN in the dominant direction, leading to activation of signals and induces a variety of biological effects. Here, we evaluated receptor-binding kinetics for each state of binary and ternary complex formation between recombinant human IFN-β-1a and the glycoengineered IFN-β mutein (R27T) using the heterodimeric Fc-fusion technology, and compared biological responses between them. Our results have provided evidence that the additional glycan of R27T, located at the binding interface of IFNAR2, destabilizes the interaction with IFNAR2 via steric hindrance, and simultaneously enhances the interaction with IFNAR1 by restricting the conformational freedom of R27T. Consequentially, altered receptor-binding kinetics of R27T in the ternary complex formation led to a substantial increase in strength and duration of biological responses such as prolonged signal activation and gene expression, contributing to enhanced anti-proliferative activity. In conclusion, our findings reveal N-glycan at residue 25 of R27T is a crucial regulator of receptor-binding kinetics that changes biological activities such as long-lasting activation. Thus, we believe that R27T may be clinically beneficial for patients with multiple sclerosis.
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Affiliation(s)
- Saehyung Lee
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Woo Sung Son
- Department of Pharmacy, College of Pharmacy, CHA University, Pocheon, South Korea
| | - Ho Bin Yang
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Nirmal Rajasekaran
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Sung-Su Kim
- The Center for Companion Diagnostics, LOGONE Bio Convergence Research Foundation, Seoul, South Korea
| | - Sungyoul Hong
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Joon-Seok Choi
- College of Pharmacy, Daegu Catholic University, Gyeongsan, South Korea
| | | | - Kyoung Song
- The Center for Companion Diagnostics, LOGONE Bio Convergence Research Foundation, Seoul, South Korea
| | - Young Kee Shin
- Laboratory of Molecular Pathology and Cancer Genomics, Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul, South Korea.,Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Suwon, South Korea
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121
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Miller S, Tsou PS, Coit P, Gensterblum-Miller E, Renauer P, Rohraff DM, Kilian NC, Schonfeld M, Sawalha AH. Hypomethylation of STAT1 and HLA-DRB1 is associated with type-I interferon-dependent HLA-DRB1 expression in lupus CD8+ T cells. Ann Rheum Dis 2019; 78:519-528. [PMID: 30674474 DOI: 10.1136/annrheumdis-2018-214323] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 01/14/2023]
Abstract
OBJECTIVE We examined genome-wide DNA methylation changes in CD8+ T cells from patients with lupus and controls and investigated the functional relevance of some of these changes in lupus. METHODS Genome-wide DNA methylation of lupus and age, sex and ethnicity-matched control CD8+ T cells was measured using the Infinium MethylationEPIC arrays. Measurement of relevant cell subsets was performed via flow cytometry. Gene expression was quantified by qPCR. Inhibiting STAT1 and CIITA was performed using fludarabine and CIITA siRNA, respectively. RESULTS Lupus CD8+ T cells had 188 hypomethylated CpG sites compared with healthy matched controls. Among the most hypomethylated were sites associated with HLA-DRB1. Genes involved in the type-I interferon response, including STAT1, were also found to be hypomethylated. IFNα upregulated HLA-DRB1 expression on lupus but not control CD8+ T cells. Lupus and control CD8+ T cells significantly increased STAT1 mRNA levels after treatment with IFNα. The expression of CIITA, a key interferon/STAT1 dependent MHC-class II regulator, is induced by IFNα in lupus CD8+ T cells, but not healthy controls. CIITA knockdown and STAT1 inhibition experiments revealed that HLA-DRB1 expression in lupus CD8+ T cells is dependent on CIITA and STAT1 signalling. Coincubation of naïve CD4+ T cells with IFNα-treated CD8+ T cells led to CD4+ T cell activation, determined by increased expression of CD69 and cytokine production, in patients with lupus but not in healthy controls. This can be blocked by neutralising antibodies targeting HLA-DR. CONCLUSIONS Lupus CD8+ T cells are epigenetically primed to respond to type-I interferon. We describe an HLA-DRB1+ CD8+ T cell subset that can be induced by IFNα in patients with lupus. A possible pathogenic role for CD8+ T cells in lupus that is dependent on a high type-I interferon environment and epigenetic priming warrants further characterisation.
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Affiliation(s)
- Shaylynn Miller
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Pei-Suen Tsou
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Patrick Coit
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Paul Renauer
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Dallas M Rohraff
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Nathan C Kilian
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Mark Schonfeld
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Amr H Sawalha
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA .,Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
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Kosciuczuk EM, Mehrotra S, Saleiro D, Kroczynska B, Majchrzak-Kita B, Lisowski P, Driehaus C, Rogalska A, Turner A, Lienhoop T, Gius D, Fish EN, Vassilopoulos A, Platanias LC. Sirtuin 2-mediated deacetylation of cyclin-dependent kinase 9 promotes STAT1 signaling in type I interferon responses. J Biol Chem 2019; 294:827-837. [PMID: 30487288 PMCID: PMC6341380 DOI: 10.1074/jbc.ra118.005956] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/08/2018] [Indexed: 02/02/2023] Open
Abstract
Type I interferons (IFNs) induce expression of multiple genes that control innate immune responses to invoke both antiviral and antineoplastic activities. Transcription of these interferon-stimulated genes (ISGs) occurs upon activation of the canonical Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathways. Phosphorylation and acetylation are both events crucial to tightly regulate expression of ISGs. Here, using mouse embryonic fibroblasts and an array of biochemical methods including immunoblotting and kinase assays, we show that sirtuin 2 (SIRT2), a member of the NAD-dependent protein deacetylase family, is involved in type I IFN signaling. We found that SIRT2 deacetylates cyclin-dependent kinase 9 (CDK9) in a type I IFN-dependent manner and that the CDK9 deacetylation is essential for STAT1 phosphorylation at Ser-727. We also found that SIRT2 is subsequently required for the transcription of ISGs and for IFN-driven antiproliferative responses in both normal and malignant cells. These findings establish the existence of a previously unreported signaling pathway whose function is essential for the control of JAK-STAT signaling and the regulation of IFN responses. Our findings suggest that targeting sirtuin activities may offer an avenue in the development of therapies for managing immune-related diseases and cancer.
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Affiliation(s)
- Ewa M Kosciuczuk
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
- the Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
- the Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
| | - Swarna Mehrotra
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
- the Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Diana Saleiro
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
- the Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Barbara Kroczynska
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
- the Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611
| | - Beata Majchrzak-Kita
- the Toronto General Hospital Research Institute, University Health Network and Department of Immunology, University of Toronto, Toronto, ON M5G 2MI, Canada
| | - Pawel Lisowski
- the Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, 05-552 Jastrzebiec, Magdalenka, Poland
- the Department of Medical Genetics, Centre for Preclinical Research and Technology (CePT), Warsaw Medical University, 02-097 Warsaw, Poland
- the iPS Cell-Based Disease Modeling Group, Max-Delbrück-Center for Molecular Medicine (MDC) in the Helmholtz Association, 13092 Berlin, Germany, and
| | - Caroline Driehaus
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
| | - Anna Rogalska
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
| | - Acara Turner
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
| | - Thomas Lienhoop
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
| | - David Gius
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
- the Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611
| | - Eleanor N Fish
- the Toronto General Hospital Research Institute, University Health Network and Department of Immunology, University of Toronto, Toronto, ON M5G 2MI, Canada
| | - Athanassios Vassilopoulos
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611
- the Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611
| | - Leonidas C Platanias
- From the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611,
- the Division of Hematology-Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
- the Division of Hematology-Oncology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
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Hermann BT, Wuertz S, Vanselow KH, Schulz C, Stiller KT. Divergent gene expression in the gills of juvenile turbot (Psetta maxima) exposed to chronic severe hypercapnia indicates dose-dependent increase in intracellular oxidative stress and hypoxia. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 206:72-80. [PMID: 30458405 DOI: 10.1016/j.aquatox.2018.10.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/29/2018] [Accepted: 10/29/2018] [Indexed: 06/09/2023]
Abstract
Elevated concentrations of carbon dioxide are a common stressor for fish and other aquatic animals. In particular, intensive aquaculture can impose prolonged periods of severe environmental hypercapnia, manifold exceeding CO2 concentrations of natural habitats. In order to cope with this stressor, gills are essential and constitute the primary organ in the acclimatization process. Yet, despite a general understanding of changes in ion regulation, not much is known with regard to other cellular mechanisms. In this study, we apply RT-qPCR to investigate changes in the expression of several genes associated with metabolism, stress and immunity within gills of juvenile turbot (Psetta maxima) after an eight-week exposure to different concentrations of CO2 (low = ∼3000 μatm, medium = ∼15,000 μatm and high = ∼25,000 μatm CO2). Histological examination of the gill tissue only found a significant increase of hypertrophied secondary lamella in the highest tested treatment level. gene expression results, on the other hand, implied both, mutual and dose-dependent transcriptional adjustments. Comparable up-regulation of IL-1ß, LMP7 and Grim19 at medium and high hypercapnia indicated an increase of reactive oxygen species (ROS) within gill cells. Simultaneous increase in Akirin and PRDX transcripts at medium CO2 indicated enhanced anti-oxidant activity and regulation of transcription, while reduced mRNA concentrations of COX, EF1α and STAT2 at high CO2 denoted suppressed protein synthesis and reduced metabolic capacity. In addition to upregulated DFAD and ApoE expression, implying compensating repair measures, gills exposed to the highest tested treatment level seemed to operate close to or even beyond their maximum capacity. Thus, fitting the model of capacity limitation, our results provide evidence for accretive intracellular hypoxia and oxidative stress in the gills of turbot, dependent on the level of environmental hypercapnia. Further, genes, such as COX, may be valuable biomarkers when attempting to discriminate between a successful and an overpowered stress response.
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Affiliation(s)
- Bernd T Hermann
- GEOMAR Helmholtz-Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105, Kiel, Germany.
| | - Sven Wuertz
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Dept. Ecophysiology and Aquaculture, Müggelseedamm 310, 12587, Berlin, Germany
| | - Klaus H Vanselow
- Research and Technology Centre (FTZ), Kiel University, Hafentörn 1, 25761, Büsum, Germany
| | - Carsten Schulz
- Institute of Animal Breeding and Husbandry, Department for Marine Aquaculture, Kiel University, Hermann-Rodewald-Str. 6, 24118, Kiel, Germany; Gesellschaft für Marine Aquakultur (GMA), Hafentörn 3, 25761, Büsum, Germany
| | - Kevin T Stiller
- Research and Technology Centre (FTZ), Kiel University, Hafentörn 1, 25761, Büsum, Germany; Gesellschaft für Marine Aquakultur (GMA), Hafentörn 3, 25761, Büsum, Germany; Nofima AS, Sjølseng, NO-6600, Sunndalsøra, Norway
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124
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Dunn J, Ferluga S, Sharma V, Futschik M, Hilton DA, Adams CL, Lasonder E, Hanemann CO. Proteomic analysis discovers the differential expression of novel proteins and phosphoproteins in meningioma including NEK9, HK2 and SET and deregulation of RNA metabolism. EBioMedicine 2018; 40:77-91. [PMID: 30594554 PMCID: PMC6412084 DOI: 10.1016/j.ebiom.2018.12.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 12/26/2022] Open
Abstract
Background Meningioma is the most frequent primary intracranial tumour. Surgical resection remains the main therapeutic option as pharmacological intervention is hampered by poor knowledge of their proteomic signature. There is an urgent need to identify new therapeutic targets and biomarkers of meningioma. Methods We performed proteomic profiling of grade I, II and III frozen meningioma specimens and three normal healthy human meninges using LC-MS/MS to analyse global proteins, enriched phosphoproteins and phosphopeptides. Differential expression and functional annotation of proteins was completed using Perseus, IPA® and DAVID. We validated differential expression of proteins and phosphoproteins by Western blot on a meningioma validation set and by immunohistochemistry. Findings We quantified 3888 proteins and 3074 phosphoproteins across all meningioma grades and normal meninges. Bioinformatics analysis revealed commonly upregulated proteins and phosphoproteins to be enriched in Gene Ontology terms associated with RNA metabolism. Validation studies confirmed significant overexpression of proteins such as EGFR and CKAP4 across all grades, as well as the aberrant activation of the downstream PI3K/AKT pathway, which seems differential between grades. Further, we validated upregulation of the total and activated phosphorylated form of the NIMA-related kinase, NEK9, involved in mitotic progression. Novel proteins identified and validated in meningioma included the nuclear proto-oncogene SET, the splicing factor SF2/ASF and the higher-grade specific protein, HK2, involved in cellular metabolism. Interpretation Overall, we generated a proteomic thesaurus of meningiomas for the identification of potential biomarkers and therapeutic targets. Fund This study was supported by Brain Tumour Research.
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Affiliation(s)
- Jemma Dunn
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Sara Ferluga
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Vikram Sharma
- School of Biomedical Science, Faculty of Medicine and Dentistry, University of Plymouth, Derriford Research Facility, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Matthias Futschik
- School of Biomedical Science, Faculty of Medicine and Dentistry, University of Plymouth, Derriford Research Facility, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - David A Hilton
- Cellular and Anatomical Pathology, Plymouth Hospitals NHS Trust, Derriford Road, Plymouth PL6 8DH, UK
| | - Claire L Adams
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - Edwin Lasonder
- School of Biomedical Science, Faculty of Medicine and Dentistry, University of Plymouth, Derriford Research Facility, Research Way, Derriford, Plymouth PL6 8BU, UK
| | - C Oliver Hanemann
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, John Bull Building, Plymouth Science Park, Research Way, Derriford, Plymouth PL6 8BU, UK.
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125
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Marié IJ, Chang HM, Levy DE. HDAC stimulates gene expression through BRD4 availability in response to IFN and in interferonopathies. J Exp Med 2018; 215:3194-3212. [PMID: 30463877 PMCID: PMC6279398 DOI: 10.1084/jem.20180520] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 08/15/2018] [Accepted: 10/19/2018] [Indexed: 01/12/2023] Open
Abstract
In contrast to the common role of histone deacetylases (HDACs) for gene repression, HDAC activity provides a required positive function for IFN-stimulated gene (ISG) expression. Here, we show that HDAC1/2 as components of the Sin3A complex are required for ISG transcriptional elongation but not for recruitment of RNA polymerase or transcriptional initiation. Transcriptional arrest by HDAC inhibition coincides with failure to recruit the epigenetic reader Brd4 and elongation factor P-TEFb due to sequestration of Brd4 on hyperacetylated chromatin. Brd4 availability is regulated by an equilibrium cycle between opposed acetyltransferase and deacetylase activities that maintains a steady-state pool of free Brd4 available for recruitment to inducible promoters. An ISG expression signature is a hallmark of interferonopathies and other autoimmune diseases. Combined inhibition of HDAC1/2 and Brd4 resolved the aberrant ISG expression detected in cells derived from patients with two inherited interferonopathies, ISG15 and USP18 deficiencies, defining a novel therapeutic approach to ISG-associated autoimmune diseases.
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Affiliation(s)
- Isabelle J Marié
- Departments of Pathology and Microbiology and Perlmutter Cancer Center, New York University School of Medicine, New York, NY
| | - Hao-Ming Chang
- Departments of Pathology and Microbiology and Perlmutter Cancer Center, New York University School of Medicine, New York, NY
| | - David E Levy
- Departments of Pathology and Microbiology and Perlmutter Cancer Center, New York University School of Medicine, New York, NY
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126
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Shepardson KM, Larson K, Johns LL, Stanek K, Cho H, Wellham J, Henderson H, Rynda-Apple A. IFNAR2 Is Required for Anti-influenza Immunity and Alters Susceptibility to Post-influenza Bacterial Superinfections. Front Immunol 2018; 9:2589. [PMID: 30473701 PMCID: PMC6237881 DOI: 10.3389/fimmu.2018.02589] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/22/2018] [Indexed: 11/13/2022] Open
Abstract
Influenza virus infections particularly when followed by bacterial superinfections (BSI) result in significant morbidities and mortalities especially during influenza pandemics. Type I interferons (IFNs) regulate both anti-influenza immunity and host susceptibility to subsequent BSIs. These type I IFNs consisting of, among others, 14 IFN-α's and a single IFN-β, are recognized by and signal through the heterodimeric type I IFN receptor (IFNAR) comprised of IFNAR1 and IFNAR2. However, the individual receptor subunits can bind IFN-β or IFN-α's independently of each other and induce distinct signaling. The role of type I IFN signaling in regulating host susceptibility to both viral infections and BSI has been only examined with respect to IFNAR1 deficiency. Here, we demonstrate that despite some redundancies, IFNAR1 and IFNAR2 have distinct roles in regulating both anti-influenza A virus (IAV) immunity and in shaping host susceptibility to subsequent BSI caused by S. aureus. We found IFNAR2 to be critical for anti-viral immunity. In contrast to Ifnar1−/− mice, IAV-infected Ifnar2−/− mice displayed both increased and accelerated morbidity and mortality compared to WT mice. Furthermore, unlike IFNAR1, IFNAR2 was sufficient to generate protection from lethal IAV infection when stimulated with IFN-β. With regards to BSI, unlike what we found previously in Ifnar1−/− mice, Ifnar2−/− mice were not susceptible to BSI induced on day 3 post-IAV, even though absence of IFNAR2 resulted in increased viral burden and an increased inflammatory environment. The Ifnar2−/− mice similar to what we previously found in Ifnar1−/− mice were less susceptible than WT mice to BSI induced on day 7 post-IAV, indicating that signaling through a complete receptor increases BSI susceptibility late during clinical IAV infection. Thus, our results support a role for IFNAR2 in induction of anti-IAV immune responses that are involved in altering host susceptibility to BSI and are essential for decreasing the morbidity and mortality associated with IAV infection. These results begin to elucidate some of the mechanisms involved in how the individual IFNAR subunits shape the anti-viral immune response. Moreover, our results highlight the importance of examining the contributions of entire receptors, as individual subunits can induce distinct outcomes as shown here.
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Affiliation(s)
- Kelly M Shepardson
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Kyle Larson
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Laura L Johns
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Kayla Stanek
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Hanbyul Cho
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Julia Wellham
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Haley Henderson
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Agnieszka Rynda-Apple
- Rynda-Apple Laboratory, Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
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Au-Yeung N, Horvath CM. Transcriptional and chromatin regulation in interferon and innate antiviral gene expression. Cytokine Growth Factor Rev 2018; 44:11-17. [PMID: 30509403 DOI: 10.1016/j.cytogfr.2018.10.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 10/18/2018] [Indexed: 12/21/2022]
Abstract
In response to virus infections, a cell-autonomous, transcription-based antiviral program is engaged to create resistance, impair pathogen replication, and alert professional cells in innate and adaptive immunity. This dual phase antiviral program consists of type I interferon (IFN) production followed by the response to IFN signaling. Pathogen recognition leads to activation of IRF and NFκB factors that function independently and together to recruit cellular coactivators that remodel chromatin, modify histones and activate RNA polymerase II (Pol II) at target gene loci, including the well-characterized IFNβ enhanceosome. In the subsequent response to IFN, a receptor-mediated JAK-STAT signaling cascade directs the assembly of the IRF9-STAT1-STAT2 transcription factor complex called ISGF3, which recruits its own cohort of remodelers, coactivators, and Pol II machinery to activate transcription of a wide range of IFN-stimulated genes. Regulation of the IFN and antiviral gene regulatory networks is not only important for driving innate immune responses to infections, but also may inform treatment of a growing list of chronic diseases that are characterized by hyperactive and constitutive IFN and IFN-stimulated gene (ISG) expression. Here, gene-specific and genome-wide investigations of the chromatin landscape at IFN and ISGs is discussed in parallel with IRF- and STAT- dependent regulation of Pol II transcription.
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Affiliation(s)
- Nancy Au-Yeung
- Department of Molecular Biosciences, Northwestern University, 2200 Campus Drive, Evanston, IL 60208, USA
| | - Curt M Horvath
- Department of Molecular Biosciences, Northwestern University, 2200 Campus Drive, Evanston, IL 60208, USA.
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128
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Davenport EE, Amariuta T, Gutierrez-Arcelus M, Slowikowski K, Westra HJ, Luo Y, Shen C, Rao DA, Zhang Y, Pearson S, von Schack D, Beebe JS, Bing N, John S, Vincent MS, Zhang B, Raychaudhuri S. Discovering in vivo cytokine-eQTL interactions from a lupus clinical trial. Genome Biol 2018; 19:168. [PMID: 30340504 PMCID: PMC6195724 DOI: 10.1186/s13059-018-1560-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 10/05/2018] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Cytokines are critical to human disease and are attractive therapeutic targets given their widespread influence on gene regulation and transcription. Defining the downstream regulatory mechanisms influenced by cytokines is central to defining drug and disease mechanisms. One promising strategy is to use interactions between expression quantitative trait loci (eQTLs) and cytokine levels to define target genes and mechanisms. RESULTS In a clinical trial for anti-IL-6 in patients with systemic lupus erythematosus, we measure interferon (IFN) status, anti-IL-6 drug exposure, and whole blood genome-wide gene expression at three time points. We show that repeat transcriptomic measurements increases the number of cis eQTLs identified compared to using a single time point. We observe a statistically significant enrichment of in vivo eQTL interactions with IFN status and anti-IL-6 drug exposure and find many novel interactions that have not been previously described. Finally, we find transcription factor binding motifs interrupted by eQTL interaction SNPs, which point to key regulatory mediators of these environmental stimuli and therefore potential therapeutic targets for autoimmune diseases. In particular, genes with IFN interactions are enriched for ISRE binding site motifs, while those with anti-IL-6 interactions are enriched for IRF4 motifs. CONCLUSIONS This study highlights the potential to exploit clinical trial data to discover in vivo eQTL interactions with therapeutically relevant environmental variables.
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Affiliation(s)
- Emma E Davenport
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Tiffany Amariuta
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, 02115, USA
| | - Maria Gutierrez-Arcelus
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Kamil Slowikowski
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, 02115, USA
| | - Harm-Jan Westra
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Yang Luo
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Ciyue Shen
- Department of Cell Biology, Harvard Medical School, Boston, MA, 02115, USA
| | - Deepak A Rao
- Division of Rheumatology, Allergy, Immunology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | | | - Stephen Pearson
- Pfizer New Haven Clinical Research Unit, New Haven, CT, 06511, USA
| | | | | | - Nan Bing
- Pfizer Inc., Cambridge, MA, 02139, USA
| | | | | | | | - Soumya Raychaudhuri
- Center for Data Sciences, Brigham and Women's Hospital, Boston, MA, 02115, USA.
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
- Partners Center for Personalized Genetic Medicine, Boston, MA, 02115, USA.
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA.
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, 02115, USA.
- Faculty of Medical and Human Sciences, University of Manchester, M13 9PL, Manchester, UK.
- Harvard New Research Building, 77 Avenue Louis Pasteur, Suite 250D, Boston, MA, 02446, USA.
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129
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Jang YJ, Lim JY, Kim S, Lee YL, Kweon MN, Kim JH. Enhanced Interferon-β Response Contributes to Eosinophilic Chronic Rhinosinusitis. Front Immunol 2018; 9:2330. [PMID: 30455684 PMCID: PMC6232691 DOI: 10.3389/fimmu.2018.02330] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/19/2018] [Indexed: 11/20/2022] Open
Abstract
Type I interferon (IFN-I, including IFN-α and IFN-β) response has been implicated in eosinophilic inflammation, in addition to antiviral function. This study aimed to investigate the role of IFN-I in the pathogenesis of eosinophilic chronic rhinosinusitis (ECRS). IFN-α, IFN-β, cytokine expression, and IFN-β cellular localization in the sinonasal tissue from control subjects and ECRS patients with nasal polyps (NP) were determined using real time-PCR, ELISA, and immunohistochemistry. ECRS was induced in wild-type (WT) and IFNAR1 knockout (Ifnar1−/−) mice by intranasal challenge with Aspergillus protease and ovalbumin. Stromal cells cultured from NP tissue were stimulated by exogenous IFN-β, and their CCL11 production and IRF3, IRF7, STAT1, STAT2, and IRF9 gene and/or protein expression were measured. IFN-β, IL-5, IL-13, and CCL11 expression was higher in the NP tissue from ECRS patients, compared to the control group. IFN-β was highly colocalized with the CD11c+ cells in NP. IFN-β levels positively correlated with IL-5, IL-13, and CCL11 levels as well as the number of eosinophils in the NP tissue and CT score. The histological severity of ECRS, levels of IL-4, IL-5, IL-13, and CCL11 in the nasal lavage fluid, and total serum IgE levels were less in Ifnar1−/− mice than in WT mice. CCL11 production, and STAT1 and STAT2 mRNA and STAT1, phospho-STAT1, and phospho-STAT2 protein expression were significantly increased by exogenous IFN-β in NP stromal cells. Our data suggest that IFN-β response was upregulated in ECRS and may play role in ECRS development. IFN-β may contribute to ECRS by enhancing CCL11 production. Thus, increased IFN-β response in the sinonasal mucosa may underlie ECRS pathogenesis.
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Affiliation(s)
- Yong Ju Jang
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ji Youn Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Seoyeon Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Yoo La Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Mi-Na Kweon
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ji Heui Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Peng M, Wang J, Zhang D, Jin H, Li J, Wu XR, Huang C. PHLPP2 stabilization by p27 mediates its inhibition of bladder cancer invasion by promoting autophagic degradation of MMP2 protein. Oncogene 2018; 37:5735-5748. [PMID: 29930380 PMCID: PMC6202328 DOI: 10.1038/s41388-018-0374-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/25/2018] [Accepted: 05/26/2018] [Indexed: 01/24/2023]
Abstract
Pleckstrin homology domain leucine-rich repeat protein phosphatase 2 (PHLPP2) is a tumor suppressor that catalyzes the de-phosphorylation of the AGC kinases, while p27 acts as a tumor suppressor that regulates cell cycle, apoptosis, and cell motility. Our previous studies have identified that PHLPP2 participates in inhibition of transformation of human bronchial epithelial cells following lung carcinogen B[a]P/B[a]PDE exposure. However, nothing was known about the association of p27 with regulation of PHLPP2 expression and the role of PHLPP2 in bladder cancer (BC) invasion. In our current studies, we demonstrated that PHLPP2 inhibited BC invasion through promoting MMP2 degradation via p62-mediated autophagy; and p27 expression was able to stabilize PHLPP2 protein by inhibiting protein degradation of Hsp90, which could directly bind to PHLPP2 and protect it from degradation. More in-depth studies discovered that stabilization of Hsp90 by p27 was mediated by calpain1 proteolysis system, whereas p27 inhibited calpain1 gene transcription by attenuating Jak1/Stat1 cascade in human invasive BC cells. Collectively, we for the first time revealed PHLPP2 downregulation in BCs and its participating in promotion of BC invasion, as well as novel role of p27 and mechanisms underlying its regulation of PHLPP2 protein degradation through Hsp90-dependent manner. Our findings improve our understanding of p27 and PHLPP2 roles and their crosstalk in regulation of BC invasion, which further contributes to improve the current strategy for invasive bladder cancer therapy.
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Affiliation(s)
- Minggang Peng
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, 10987, USA
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 JieFang Avenue, Wuhan, 430022, China
| | - Jingjing Wang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, 10987, USA
| | - Dongyun Zhang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, 10987, USA
| | - Honglei Jin
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, 10987, USA
| | - Xue-Ru Wu
- Departments of Urology and Pathology, New York University School of Medicine, New York, NY, 10016, USA
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, 10987, USA.
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131
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Musavi SAA, Yamashita S, Fujihara T, Masaka H, Islam MR, Kim S, Gotoh T, Kawahara M, Tashiro K, Yamauchi N. Analysis of differentially expressed genes and the promoters in bovine endometrium throughout estrus cycle and early pregnancy. Anim Sci J 2018; 89:1609-1621. [PMID: 30182475 DOI: 10.1111/asj.13091] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 06/17/2018] [Indexed: 01/09/2023]
Abstract
Endometrial gene expression is primarily regulated by the ovarian steroids and pregnancy recognition factors. This study was aimed to characterize differential expression genes (DEGs) in bovine endometrium together with the analysis of their promoter region. Bovine uteri at follicular stage (FS), luteal stage (LS), and implantation stage (IS) at Day 18 of pregnancy were collected. Total RNA extracted and prepared cDNA were then subjected to high-throughput sequencing. For promoter analysis, 1 kb upstream promoter region of each DEG was analyzed. The numbers of highly expressed DEGs were 496 and 597 at FS and LS, respectively. When compared the gene expression of IS with LS, 383 and 346 DEGs showed higher and lower expression at IS, respectively. It was also observed that 20-30 transcription factors (TFs) were included in each DEGs. In addition, promoter analyses estimated 150-160 TFs for each stage. DLX4 and interferon regulatory factor 4 (IRF4) at FS, and IRF5, IRF9, STAT1, and STAT2 at IS were in common to DEGs and estimated TFs, respectively. This study highlighted potential molecular mechanisms controlling endometrial function during estrus cycle and IS, which will further guide to better understand the endometrial functions in future studies.
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Affiliation(s)
- Sayed A A Musavi
- Department of Animal and Marine Bio Resource Sciences, Graduate School Kyushu University, Fukuoka, Japan.,Department of Animal Husbandry, Agriculture Faculty, Balkh University, Mazar-e-Sharif, Afghanistan
| | - Seiya Yamashita
- Department of Animal and Marine Bio Resource Sciences, Graduate School Kyushu University, Fukuoka, Japan
| | - Taisuke Fujihara
- Department of Animal and Marine Bio Resource Sciences, Graduate School Kyushu University, Fukuoka, Japan
| | - Hironori Masaka
- Department of Animal and Marine Bio Resource Sciences, Graduate School Kyushu University, Fukuoka, Japan
| | - Md Rashedul Islam
- Department of Genetics and Animal Breeding, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh
| | - Sangwan Kim
- Laboratory of Molecular Gene Technics, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Takafumi Gotoh
- Laboratory of Meat Science, Graduate School of Agriculture, Kagoshima University, Kagoshima, Japan
| | - Manabu Kawahara
- Department of Animal Science, Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Kosuke Tashiro
- Laboratory of Molecular Gene Technics, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Nobuhiko Yamauchi
- Department of Animal and Marine Bio Resource Sciences, Graduate School Kyushu University, Fukuoka, Japan
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132
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Au-Yeung N, Horvath CM. Histone H2A.Z Suppression of Interferon-Stimulated Transcription and Antiviral Immunity Is Modulated by GCN5 and BRD2. iScience 2018; 6:68-82. [PMID: 30240626 PMCID: PMC6137307 DOI: 10.1016/j.isci.2018.07.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/27/2018] [Accepted: 07/16/2018] [Indexed: 12/21/2022] Open
Abstract
Type I interferon (IFN)-stimulated gene (ISG) expression requires interaction between a transcription factor complex, ISGF3, and target gene promoters to initiate transcription and protection against infection. To uncover chromatin regulatory features of this antiviral immune response, IFN-induced nucleosome and histone dynamics of human ISG loci were examined. ISGF3 recruitment after IFN stimulation was accompanied by nucleosome reorganization at promoters and gene bodies. IFN stimulation induced loss of core histones H2B, H3, and H4, as well as H2A.Z at ISG promoters. A strong correlation was found between H2A.Z occupancy and ISGF3 target sites, and IFN-stimulated H2A.Z removal requires STAT1, STAT2, and IRF9. Neither INO80 nor SWI/SNF participate in IFN-driven H2A.Z eviction, but GCN5 and BRD2 are required. Interference with H2A.Z expression enhanced ISGF3 recruitment to ISG promoters, ISG mRNA expression, and IFN-stimulated antiviral immunity. This indicates that H2A.Z nucleosomes at ISG promoters restrict optimal ISGF3 engagement and modulate the biological response to IFN.
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Affiliation(s)
- Nancy Au-Yeung
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA
| | - Curt M Horvath
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA.
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133
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Zhang B, He Y, Xu Y, Mo F, Mi T, Shen QS, Li C, Li Y, Liu J, Wu Y, Chen G, Zhu W, Qin C, Hu B, Zhou G. Differential antiviral immunity to Japanese encephalitis virus in developing cortical organoids. Cell Death Dis 2018; 9:719. [PMID: 29915260 PMCID: PMC6006338 DOI: 10.1038/s41419-018-0763-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/26/2018] [Accepted: 05/03/2018] [Indexed: 12/23/2022]
Abstract
Japanese encephalitis (JE) caused by Japanese encephalitis virus (JEV) poses a serious threat to the world’s public health yet without a cure. Certain JEV-infected neural cells express a subset of previously identified intrinsic antiviral interferon stimulated genes (ISGs), indicating brain cells retain autonomous antiviral immunity. However, whether this happens in composited brain remains unclear. Human pluripotent stem cell (hPSC)-derived organoids can model disorders caused by human endemic pathogens such as Zika virus, which may potentially address this question and facilitate the discovery of a cure for JE. We thus generated telencephalon organoid and infected them with JEV. We found JEV infection caused significant decline of cell proliferation and increase of cell death in brain organoid, resulting in smaller organoid spheres. JEV tended to infect astrocytes and neural progenitors, especially the population representing outer radial glial cells (oRGCs) of developing human brain. In addition, we revealed variable antiviral immunity in brain organoids of different stages of culture. In organoids of longer culture (older than 8 weeks), but not of early ones (less than 4 weeks), JEV infection caused typical activation of interferon signaling pathway. Preferential infection of oRGCs and differential antiviral response at various stages might explain the much more severe outcomes of JEV infection in the younger, which also provide clues to develop effective therapeutics of such diseases.
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Affiliation(s)
- Boya Zhang
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, PR China.,Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention of Shanghai, Shanghai, 200032, PR China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Yangzhige He
- School of Life Sciences, Tsinghua University, Beijing, 100084, PR China
| | - Yanpeng Xu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Fan Mo
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Tingwei Mi
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Qing Sunny Shen
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, 100871, PR China
| | - Chunfeng Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China
| | - Yali Li
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking University, Beijing, 100871, PR China
| | - Jing Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Yihui Wu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Guilai Chen
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Wenliang Zhu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China
| | - Chengfeng Qin
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, PR China.
| | - Baoyang Hu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, PR China.
| | - Guomin Zhou
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, 200032, PR China. .,Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention of Shanghai, Shanghai, 200032, PR China.
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134
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Michalska A, Blaszczyk K, Wesoly J, Bluyssen HAR. A Positive Feedback Amplifier Circuit That Regulates Interferon (IFN)-Stimulated Gene Expression and Controls Type I and Type II IFN Responses. Front Immunol 2018; 9:1135. [PMID: 29892288 PMCID: PMC5985295 DOI: 10.3389/fimmu.2018.01135] [Citation(s) in RCA: 200] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/07/2018] [Indexed: 12/14/2022] Open
Abstract
Interferon (IFN)-I and IFN-II both induce IFN-stimulated gene (ISG) expression through Janus kinase (JAK)-dependent phosphorylation of signal transducer and activator of transcription (STAT) 1 and STAT2. STAT1 homodimers, known as γ-activated factor (GAF), activate transcription in response to all types of IFNs by direct binding to IFN-II activation site (γ-activated sequence)-containing genes. Association of interferon regulatory factor (IRF) 9 with STAT1–STAT2 heterodimers [known as interferon-stimulated gene factor 3 (ISGF3)] or with STAT2 homodimers (STAT2/IRF9) in response to IFN-I, redirects these complexes to a distinct group of target genes harboring the interferon-stimulated response element (ISRE). Similarly, IRF1 regulates expression of ISGs in response to IFN-I and IFN-II by directly binding the ISRE or IRF-responsive element. In addition, evidence is accumulating for an IFN-independent and -dependent role of unphosphorylated STAT1 and STAT2, with or without IRF9, and IRF1 in basal as well as long-term ISG expression. This review provides insight into the existence of an intracellular amplifier circuit regulating ISG expression and controlling long-term cellular responsiveness to IFN-I and IFN-II. The exact timely steps that take place during IFN-activated feedback regulation and the control of ISG transcription and long-term cellular responsiveness to IFN-I and IFN-II is currently not clear. Based on existing literature and our novel data, we predict the existence of a multifaceted intracellular amplifier circuit that depends on unphosphorylated and phosphorylated ISGF3 and GAF complexes and IRF1. In a combinatorial and timely fashion, these complexes mediate prolonged ISG expression and control cellular responsiveness to IFN-I and IFN-II. This proposed intracellular amplifier circuit also provides a molecular explanation for the existing overlap between IFN-I and IFN-II activated ISG expression.
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Affiliation(s)
- Agata Michalska
- Department of Human Molecular Genetics, Faculty of Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznan, Poland
| | - Katarzyna Blaszczyk
- Department of Human Molecular Genetics, Faculty of Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznan, Poland
| | - Joanna Wesoly
- Laboratory of High Throughput Technologies, Faculty of Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznan, Poland
| | - Hans A R Bluyssen
- Department of Human Molecular Genetics, Faculty of Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznan, Poland
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135
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Abstract
Interferon alpha/beta (IFN-α/β) is a critical mediator of protection against most viruses, with host survival frequently impossible in its absence. Many studies have investigated the pathways involved in the induction of IFN-α/β after virus infection and the resultant upregulation of antiviral IFN-stimulated genes (ISGs) through IFN-α/β receptor complex signaling. However, other than examining the effects of genetic deletion of induction or effector pathway components, little is known regarding the functionality of these responses in intact hosts and whether host genetic or environmental factors might influence their potency. Here, we demonstrate that the IFN-α/β response against multiple arthropod-vectored viruses, which replicate over a wide temperature range, is extremely sensitive to fluctuations in temperature, exhibiting reduced antiviral efficacy at subnormal cellular temperatures and increased efficacy at supranormal temperatures. The effect involves both IFN-α/β and ISG upregulation pathways with a major aspect of altered potency reflecting highly temperature-dependent transcription of IFN response genes that leads to altered IFN-α/β and ISG protein levels. Discordantly, signaling steps prior to transcription that were examined showed the opposite effect from gene transcription, with potentiation at low temperature and inhibition at high temperature. Finally, we demonstrate that by lowering the temperature of mice, chikungunya arbovirus replication and disease are exacerbated in an IFN-α/β-dependent manner. This finding raises the potential for use of hyperthermia as a therapeutic modality for viral infections and in other contexts such as antitumor therapy. The increased IFN-α/β efficacy at high temperatures may also reflect an innate immune-relevant aspect of the febrile response. The interferon alpha/beta (IFN-α/β) response is a first-line innate defense against arthropod-borne viruses (arboviruses). Arboviruses, such as chikungunya virus (CHIKV), can infect cells and replicate across a wide temperature range due to their replication in both mammalian/avian and arthropod hosts. Accordingly, these viruses can cause human disease in tissues regularly exposed to temperatures below the normal mammalian core temperature, 37°C. We questioned whether temperature variation could affect the efficacy of IFN-α/β responses against these viruses and help to explain some aspects of human disease manifestations. We observed that IFN-α/β efficacy was dramatically lower at subnormal temperatures and modestly enhanced at febrile temperatures, with the effects involving altered IFN-α/β response gene transcription but not IFN-α/β pathway signaling. These results provide insight into the functioning of the IFN-α/β response in vivo and suggest that temperature elevation may represent an immune-enhancing therapeutic modality for a wide variety of IFN-α/β-sensitive infections and pathologies.
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136
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Maroui MA, Maarifi G, McManus FP, Lamoliatte F, Thibault P, Chelbi-Alix MK. Promyelocytic Leukemia Protein (PML) Requirement for Interferon-induced Global Cellular SUMOylation. Mol Cell Proteomics 2018. [PMID: 29535160 DOI: 10.1074/mcp.ra117.000447] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We report that interferon (IFN) α treatment at short and long periods increases the global cellular SUMOylation and requires the presence of the SUMO E3 ligase promyelocytic leukemia protein (PML), the organizer of PML nuclear bodies (NBs). Several PML isoforms (PMLI-PMLVII) derived from a single PML gene by alternative splicing, share the same N-terminal region but differ in their C-terminal sequences. Introducing each of the human PML isoform in PML-negative cells revealed that enhanced SUMOylation in response to IFN is orchestrated by PMLIII and PMLIV. Large-scale proteomics experiments enabled the identification of 558 SUMO sites on 389 proteins, of which 172 sites showed differential regulation upon IFNα stimulation, including K49 from UBC9, the sole SUMO E2 protein. Furthermore, IFNα induces PML-dependent UBC9 transfer to the nuclear matrix where it colocalizes with PML within the NBs and enhances cellular SUMOylation levels. Our results demonstrate that SUMOylated UBC9 and PML are key players for IFN-increased cellular SUMOylation.
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Affiliation(s)
- Mohamed Ali Maroui
- From the ‡INSERM UMR-S1124, 75006 Paris, France.,§Université Paris Descartes, 75006 Paris, France
| | - Ghizlane Maarifi
- From the ‡INSERM UMR-S1124, 75006 Paris, France.,§Université Paris Descartes, 75006 Paris, France
| | - Francis P McManus
- ¶Institute for Research in Immunology and Cancer, H3T 1J4, Québec, Canada
| | - Frédéric Lamoliatte
- ¶Institute for Research in Immunology and Cancer, H3T 1J4, Québec, Canada.,‖University of Montréal, Department of Chemistry, H3T 1J4, Québec, Canada
| | - Pierre Thibault
- ¶Institute for Research in Immunology and Cancer, H3T 1J4, Québec, Canada; .,‖University of Montréal, Department of Chemistry, H3T 1J4, Québec, Canada.,**University of Montréal, Department of Biochemistry, H3T 1J4, Québec, Canada
| | - Mounira K Chelbi-Alix
- From the ‡INSERM UMR-S1124, 75006 Paris, France; .,§Université Paris Descartes, 75006 Paris, France
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137
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Holder KA, Comeau EM, Grant MD. Origins of natural killer cell memory: special creation or adaptive evolution. Immunology 2018; 154:38-49. [PMID: 29355919 DOI: 10.1111/imm.12898] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/09/2018] [Accepted: 01/14/2018] [Indexed: 12/13/2022] Open
Abstract
The few initial formative studies describing non-specific and apparently spontaneous activity of natural killer (NK) cells have since multiplied into thousands of scientific reports defining their unique capacities and means of regulation. Characterization of the array of receptors that govern NK cell education and activation revealed an unexpected relationship with the major histocompatibility molecules that NK cells originally became well known for ignoring. Proceeding true to form, NK cells continue to up-end archetypal understanding of their ever-expanding capabilities. Discovery that the NK cell repertoire is extremely diverse and can be reshaped by particular viruses into unique subsets of adaptive NK cells challenges, or at least broadens, the definition of immunological memory. This review provides an overview of studies identifying adaptive NK cells, addressing the origins of NK cell memory and introducing the heretical concept of NK cells with extensive antigenic specificity. Whether these newly apparent properties reflect adaptive utilization of known NK cell attributes and receptors or a specially creative allocation from an undefined receptor array remains to be fully determined.
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Affiliation(s)
- Kayla A Holder
- Immunology and Infectious Diseases Programme, Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St John's, NL, Canada
| | - Emilie M Comeau
- Immunology and Infectious Diseases Programme, Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St John's, NL, Canada
| | - Michael D Grant
- Immunology and Infectious Diseases Programme, Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St John's, NL, Canada
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138
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Ingle H, Peterson ST, Baldridge MT. Distinct Effects of Type I and III Interferons on Enteric Viruses. Viruses 2018; 10:E46. [PMID: 29361691 PMCID: PMC5795459 DOI: 10.3390/v10010046] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/16/2018] [Accepted: 01/18/2018] [Indexed: 12/12/2022] Open
Abstract
Interferons (IFNs) are key host cytokines in the innate immune response to viral infection, and recent work has identified unique roles for IFN subtypes in regulating different aspects of infection. Currently emerging is a common theme that type III IFNs are critical in localized control of infection at mucosal barrier sites, while type I IFNs are important for broad systemic control of infections. The intestine is a particular site of interest for exploring these effects, as in addition to being the port of entry for a multitude of pathogens, it is a complex tissue with a variety of cell types as well as the presence of the intestinal microbiota. Here we focus on the roles of type I and III IFNs in control of enteric viruses, discussing what is known about signaling downstream from these cytokines, including induction of specific IFN-stimulated genes. We review viral strategies to evade IFN responses, effects of IFNs on the intestine, interactions between IFNs and the microbiota, and briefly discuss the role of IFNs in controlling viral infections at other barrier sites. Enhanced understanding of the coordinate roles of IFNs in control of viral infections may facilitate development of antiviral therapeutic strategies; here we highlight potential avenues for future exploration.
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Affiliation(s)
- Harshad Ingle
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Stefan T Peterson
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Megan T Baldridge
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
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139
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A Biomolecular Network Driven Proteinic Interaction in HCV Clearance. Cell Biochem Biophys 2018; 76:161-172. [PMID: 29313175 DOI: 10.1007/s12013-017-0837-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 12/26/2017] [Indexed: 12/20/2022]
Abstract
Hepatitis C virus infection causes chronic liver disease that leads to cancer-related mortality. Presently around 30% of the HCV (infected) affected population get rid of the infection through spontaneous disease clearance. This phenomenon is conducted by a set of reported immune candidate genes. Hence, this study focuses only on these immune-response related genes with aid of network approach, where the idea is to disseminate the network for better understanding of key functional genes and their transcription control activity. Based on the network analysis the IFNG, TNF, IFNB1, STAT1, NFKB1, STAT3, SOCS1, and MYD88 genes are prioritized as hub genes along with their common transcription factors (TFs), IRF9, NFKB1, and STAT1. The dinucleotide frequency of TF binding elements indicated GG-rich motifs in these regulatory elements. On the other hand, gene enrichment report suggests the regulation of response to interferon gamma signaling pathway, which plays central role in the spontaneous HCV clearance. Therefore, our study tends to prioritize the genes, TFs, and their regulatory pathway towards HCV clearance. Even so, the resultant hub genes and their TFs and TF binding elements could be crucial in underscoring the clearance activity in specific populations.
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140
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MicroRNA gga-miR-130b Suppresses Infectious Bursal Disease Virus Replication via Targeting of the Viral Genome and Cellular Suppressors of Cytokine Signaling 5. J Virol 2017; 92:JVI.01646-17. [PMID: 29046449 DOI: 10.1128/jvi.01646-17] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 10/10/2017] [Indexed: 01/29/2023] Open
Abstract
MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression posttranscriptionally through silencing or degrading their targets, thus playing important roles in the immune response. However, the role of miRNAs in the host response against infectious bursal disease virus (IBDV) infection is not clear. In this study, we show that the expression of a series of miRNAs was significantly altered in DF-1 cells after IBDV infection. We found that the miRNA gga-miR-130b inhibited IBDV replication via targeting the specific sequence of IBDV segment A and enhanced the expression of beta interferon (IFN-β) by targeting suppressors of cytokine signaling 5 (SOCS5) in host cells. These findings indicate that gga-miR-130b-3p plays a crucial role in host defense against IBDV infection.IMPORTANCE This work shows that gga-miR-130b suppresses IBDV replication via directly targeting the viral genome and cellular SOCS5, the negative regulator for type I interferon expression, revealing the mechanism underlying gga-miR-130-induced inhibition of IBDV replication. This information will be helpful for the understanding of how host cells combat pathogenic infection by self-encoded small RNA and furthers our knowledge of the role of microRNAs in the cell response to viral infection.
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141
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Sadreev II, Chen MZQ, Umezawa Y, Biktashev VN, Kemper C, Salakhieva DV, Welsh GI, Kotov NV. The competitive nature of signal transducer and activator of transcription complex formation drives phenotype switching of T cells. Immunology 2017; 153:488-501. [PMID: 29030870 DOI: 10.1111/imm.12851] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 09/16/2017] [Accepted: 10/03/2017] [Indexed: 12/12/2022] Open
Abstract
Signal transducers and activators of transcription (STATs) are key molecular determinants of T-cell fate and effector function. Several inflammatory diseases are characterized by an altered balance of T-cell phenotypes and cytokine secretion. STATs, therefore, represent viable therapeutic targets in numerous pathologies. However, the underlying mechanisms by which the same STAT proteins regulate both the development of different T-cell phenotypes and their plasticity during changes in extracellular conditions remain unclear. In this study, we investigated the STAT-mediated regulation of T-cell phenotype formation and plasticity using mathematical modelling and experimental data for intracellular STAT signalling proteins. The close fit of our model predictions to the experimental data allows us to propose a potential mechanism for T-cell switching. According to this mechanism, T-cell phenotype switching is the result of the relative redistribution of STAT dimer complexes caused by the extracellular cytokine-dependent STAT competition effects. The developed model predicts that the balance between the intracellular STAT species defines the amount of the produced cytokines and thereby T-cell phenotypes. The model predictions are consistent with the experimentally observed interferon-γ to interleukin-10 switching that regulates human T helper type 1/type 1 regulatory T-cell responses. The proposed model is applicable to a number of STAT signalling circuits.
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Affiliation(s)
- Ildar I Sadreev
- Centre for Systems, Dynamics and Control, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
| | - Michael Z Q Chen
- School of Automation, Nanjing University of Science and Technology, Nanjing, Jiangsu, China
| | - Yoshinori Umezawa
- Department of Dermatology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Vadim N Biktashev
- Centre for Systems, Dynamics and Control, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
| | - Claudia Kemper
- Laboratory of Molecular Immunology and Immunology Center, National Heart, Lung and Blood Institute, Bethesda, MD, USA.,Division of Transplant Immunology and Mucosal Biology, King's College London, London, UK.,Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Diana V Salakhieva
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, Kazan, Russia
| | - Gavin I Welsh
- Bristol Renal, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Nikolay V Kotov
- Biophysics & Bionics Laboratory, Institute of Physics, Kazan (Volga Region) Federal University, Kazan, Russia
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142
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Hou D, Wang D, Ma X, Chen W, Guo S, Guan H. Effects of total flavonoids of sea buckthorn ( Hippophae rhamnoides L.) on cytotoxicity of NK92-MI cells. Int J Immunopathol Pharmacol 2017; 30:353-361. [PMID: 28994628 PMCID: PMC5806804 DOI: 10.1177/0394632017736673] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Sea buckthorn (Hippophae rhamnoides L.) has multifarious medicinal properties including immunoregulatory effect. The total flavonoids of Hippophae rhamnoides L. (TFH) are the main active components isolated from berries of sea buckthorn. The aim of this study was to evaluate the effects of TFH on the cytotoxicity of NK92-MI cells and its possible mechanisms. NK92-MI cells were treated with TFH (2.5 or 5.0 mg/L) or phosphate-buffered saline (PBS) for 24 h, the cytotoxicity against K562 was detected by measuring the release of lactate dehydrogenase (LDH), expression levels of NCRs (NKp30, NKp44, NKp46) and NKG2D were detected by flow cytometry, and expression levels of perforin and granzyme B were detected by western blot. Cytokine Antibody Arrays with 80 cytokine proteins were used to profile the effect of TFH on cytokines. Western blot was adopted to detect the effects of TFH on STAT1, STAT4, and STAT5 signal pathway. Compared with the normal control group, TFH could significantly enhance NK92-MI cell cytotoxicity against K562 cells, upregulate expressions of NKp44, NKp46, perforin, and granzyme B. TFH could upregulate expressions of IL-1α, IL-2, IL-7, IL-15, CSF-2, CSF-3, MCP-1, MIG, IFN-γ, TNF-α, and TNF-β and downregulate expressions of IL-16, MIP-1β, CX3CL-1, and MIF. TFH could increase expressions of phospho-STAT1 and phospho-STAT5. The results suggest that TFH stimulated NK92-MI cells to activate and enhance cytotoxicity of NK92-MI cells.
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Affiliation(s)
- Diandong Hou
- 1 Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
| | - Decheng Wang
- 2 The Second Clinical Medical Institute, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
| | - Xiande Ma
- 3 Experiment and Technology Center, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
| | - Wenna Chen
- 3 Experiment and Technology Center, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
| | - Shengnan Guo
- 3 Experiment and Technology Center, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
| | - Hongquan Guan
- 4 Basic Medical Science College, Liaoning University of Traditional Chinese Medicine, Shenyang, P.R. China
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143
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Mok L, Wynne JW, Tachedjian M, Shiell B, Ford K, Matthews DA, Bacic A, Michalski WP. Proteomics informed by transcriptomics for characterising differential cellular susceptibility to Nelson Bay orthoreovirus infection. BMC Genomics 2017; 18:615. [PMID: 28806913 PMCID: PMC5556373 DOI: 10.1186/s12864-017-3994-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 08/01/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Nelson Bay orthoreovirus (NBV) is a fusogenic bat borne virus with an unknown zoonotic potential. Previous studies have shown that NBV can infect and replicate in a wide variety of cell types derived from their natural host (bat), as well as from human, mouse and monkey. Within permissive cells, NBV induced significant cytopathic effects characterised by cell-cell fusion and syncytia formation. To understand the molecular events that underpin NBV infection we examined the host transcriptome and proteome response of two cell types, derived from bat (PaKiT03) and mouse (L929), to characterise differential cellular susceptibility to NBV. RESULTS Despite significant differences in NBV replication and cytopathic effects in the L929 and PaKiT03 cells, the host response was remarkably similar in these cells. At both the transcriptome and proteome level, the host response was dominated by IFN production and signalling pathways. The majority of proteins up-regulated in L929 and PaKiT03 cells were also up-regulated at the mRNA (gene) level, and included many important IFN stimulated genes. Further functional experimentation demonstrated that stimulating IFN signalling prior to infection, significantly reduced NBV replication in PaKiT03 cells. Moreover, inhibiting IFN signalling (through specific siRNAs) increased NBV replication in L929 cells. In line with the significant cytopathic effects seen in PaKiT03 cells, we also observed a down-regulation of genes involved in cell-cell junctions, which may be related to the fusogenic effects of NBV. CONCLUSIONS This study provides new multi-dimensional insights into the host response of mammalian cells to NBV infection. We show that IFN activity is capable of reducing NBV replication, although it is unlikely that this is solely responsible for the reduced replication of NBV in L929 cells. The molecular events that underpin the fusogenic cytopathic effects described here will prove valuable for identifying potential therapeutic targets against fusogenic orthoreovirus.
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Affiliation(s)
- Lawrence Mok
- CSIRO, Australian Animal Health Laboratory, East Geelong, VIC, Australia.,ARC Centre of Excellence in Plant Cell Walls School of BioSciences, The University of Melbourne, Melbourne, VIC, Australia
| | - James W Wynne
- CSIRO, Australian Animal Health Laboratory, East Geelong, VIC, Australia.
| | - Mary Tachedjian
- CSIRO, Australian Animal Health Laboratory, East Geelong, VIC, Australia
| | - Brian Shiell
- CSIRO, Australian Animal Health Laboratory, East Geelong, VIC, Australia
| | - Kris Ford
- ARC Centre of Excellence in Plant Cell Walls School of BioSciences, The University of Melbourne, Melbourne, VIC, Australia
| | - David A Matthews
- Department of Cellular and Molecular Medicine, School of Medical Sciences, University of Bristol, Bristol, UK
| | - Antony Bacic
- ARC Centre of Excellence in Plant Cell Walls School of BioSciences, The University of Melbourne, Melbourne, VIC, Australia
| | - Wojtek P Michalski
- CSIRO, Australian Animal Health Laboratory, East Geelong, VIC, Australia
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144
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Roshan R, Choudhary A, Bhambri A, Bakshi B, Ghosh T, Pillai B. microRNA dysregulation in polyglutamine toxicity of TATA-box binding protein is mediated through STAT1 in mouse neuronal cells. J Neuroinflammation 2017; 14:155. [PMID: 28774347 PMCID: PMC5543588 DOI: 10.1186/s12974-017-0925-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 07/21/2017] [Indexed: 01/10/2023] Open
Abstract
Background Polyglutamine diseases constitute a class of neurodegenerative disorders associated with expansion of the cytosine-adenine-guanine (CAG) triplet, in protein coding genes. Expansion of a polyglutamine tract in the N-terminal of TBP is the causal mutation in SCA17. Brain sections of patients with spinocerebellar ataxia 17 (SCA17), a type of neurodegenerative disease, have been reported to contain protein aggregates of TATA-binding protein (TBP). It is also implicated in other neurodegenerative diseases like Huntington’s disease, since the protein aggregates formed in such diseases also contain TBP. Dysregulation of miR-29a/b is another common feature of neurodegenerative diseases including Alzheimer’s disease, Huntington’s disease, and SCA17. Using a cellular model of SCA17, we identified key connections in the molecular pathway from protein aggregation to miRNA dysregulation. Methods Gene expression profiling was performed subsequent to the expression of TBP containing polyglutamine in a cellular model of SCA17. We studied the expression of STAT1 and other interferon-gamma dependent genes in neuronal apoptosis. The molecular pathway leading to the dysregulation of miRNA in response of protein aggregation and interferon release was investigated using RNAi-mediated knockdown of STAT1. Results We show that the accumulation of polyglutamine-TBP in the cells results in interferon-gamma release which in turn signals through STAT1 leading to downregulation of miR-29a/b. We propose that the release of interferons by cells harboring toxic protein aggregates may trigger a bystander effect resulting in loss of neurons. Interferon-gamma also led to upregulation of miR-322 although this effect is not mediated through STAT1. Conclusions Our investigation shows that neuroinflammation could be an important player in mediating the transcriptional dysregulation of miRNA and the subsequent apoptotic effect of toxic polyglutamine-TBP. The involvement of immunomodulators in polyglutamine diseases holds special therapeutic relevance in the light of recent findings that interferon-gamma can modulate behavior.
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Affiliation(s)
- Reema Roshan
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Ashwani Choudhary
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Indian Institute of Science, Centre for Neuroscience, Bangalore, 560012, Karnataka, India
| | - Aksheev Bhambri
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Academy of Scientific and Innovative Research (AcSIR), Mathura Road, Delhi, 110025, India.,Present address: Indian Council of Medical Research, New Delhi, India
| | - Bhawani Bakshi
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Tanay Ghosh
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Wellcome-Medical Research Council Cambridge Stem Cell Institute, Department of Clinical Neurosciences,, University of Cambridge, Cambridge, UK
| | - Beena Pillai
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India. .,Academy of Scientific and Innovative Research (AcSIR), Mathura Road, Delhi, 110025, India.
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145
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Zimmerman O, Rosen LB, Swamydas M, Ferre EMN, Natarajan M, van de Veerdonk F, Holland SM, Lionakis MS. Autoimmune Regulator Deficiency Results in a Decrease in STAT1 Levels in Human Monocytes. Front Immunol 2017; 8:820. [PMID: 28769929 PMCID: PMC5509791 DOI: 10.3389/fimmu.2017.00820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 06/29/2017] [Indexed: 11/21/2022] Open
Abstract
Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is a rare primary immunodeficiency disorder typically caused by biallelic autoimmune regulator (AIRE) mutations that manifests with chronic mucocutaneous candidiasis (CMC) and autoimmunity. Patients with STAT1 gain-of-function (GOF) mutations also develop CMC and autoimmunity; they exhibit increased STAT1 protein levels at baseline and STAT1 phosphorylation (pSTAT1) upon interferon (IFN)-γ stimulation relative to healthy controls. AIRE interacts functionally with a protein that directly regulates STAT1, namely protein inhibitor of activated STAT1, which inhibits STAT1 activation. Given the common clinical features between patients with AIRE and STAT1 GOF mutations, we sought to determine whether APECED patients also exhibit increased levels of STAT1 protein and phosphorylation in CD14+ monocytes. We obtained peripheral blood mononuclear cells from 8 APECED patients and 13 healthy controls and assessed the levels of STAT1 protein and STAT1 tyrosine phosphorylation at rest and following IFN-γ stimulation, as well as the levels of STAT1 mRNA. The mean STAT1 protein levels in CD14+ monocytes exhibited a ~20% significant decrease in APECED patients both at rest and after IFN-γ stimulation relative to that of healthy donors. Similarly, the mean peak value of IFN-γ-induced pSTAT1 level was ~20% significantly lower in APECED patients compared to that in healthy controls. The decrease in STAT1 and peak pSTAT1 in APECED patients was not accompanied by decreased STAT1 mRNA or anti-IFN-γ autoantibodies; instead, it correlated with the presence of autoantibodies to type I IFN and decreased AIRE−/− monocyte surface expression of IFN-γ receptor 2. Our data show that, in contrast to patients with STAT1 GOF mutations, APECED patients show a moderate but consistent and significant decrease in total STAT1 protein levels, associated with lower peak levels of pSTAT1 molecules after IFN-γ stimulation.
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Affiliation(s)
- Ofer Zimmerman
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Lindsey B Rosen
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Muthulekha Swamydas
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Elise M N Ferre
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Mukil Natarajan
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Frank van de Veerdonk
- Department of Internal Medicine, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences (RILMS), Nijmegen, Netherlands
| | - Steven M Holland
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
| | - Michail S Lionakis
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Immunology, National Institutes of Health, Bethesda, MD, United States
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146
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Li Y, Wilson HL, Kiss-Toth E. Regulating STING in health and disease. J Inflamm (Lond) 2017; 14:11. [PMID: 28596706 PMCID: PMC5463399 DOI: 10.1186/s12950-017-0159-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/26/2017] [Indexed: 12/15/2022] Open
Abstract
The presence of cytosolic double-stranded DNA molecules can trigger multiple innate immune signalling pathways which converge on the activation of an ER-resident innate immune adaptor named "STimulator of INterferon Genes (STING)". STING has been found to mediate type I interferon response downstream of cyclic dinucleotides and a number of DNA and RNA inducing signalling pathway. In addition to its physiological function, a rapidly increasing body of literature highlights the role for STING in human disease where variants of the STING proteins, as well as dysregulated STING signalling, have been implicated in a number of inflammatory diseases. This review will summarise the recent structural and functional findings of STING, and discuss how STING research has promoted the development of novel therapeutic approaches and experimental tools to improve treatment of tumour and autoimmune diseases.
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Affiliation(s)
- Yang Li
- Department of Infection; Immunity and Cardiovascular Disease, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX UK
| | - Heather L. Wilson
- Department of Infection; Immunity and Cardiovascular Disease, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX UK
| | - Endre Kiss-Toth
- Department of Infection; Immunity and Cardiovascular Disease, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX UK
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147
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Agrawal A, Khan MJ, Graugnard DE, Vailati-Riboni M, Rodriguez-Zas SL, Osorio JS, Loor JJ. Prepartal Energy Intake Alters Blood Polymorphonuclear Leukocyte Transcriptome During the Peripartal Period in Holstein Cows. Bioinform Biol Insights 2017; 11:1177932217704667. [PMID: 28579762 PMCID: PMC5414586 DOI: 10.1177/1177932217704667] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/13/2017] [Indexed: 12/18/2022] Open
Abstract
In the dairy industry, cow health and farmer profits depend on the balance between diet (ie, nutrient composition, daily intake) and metabolism. This is especially true during the transition period, where dramatic physiological changes foster vulnerability to immunosuppression, negative energy balance, and clinical and subclinical disorders. Using an Agilent microarray platform, this study examined changes in the transcriptome of bovine polymorphonuclear leukocytes (PMNLs) due to prepartal dietary intake. Holstein cows were fed a high-straw, control-energy diet (CON; NEL = 1.34 Mcal/kg) or overfed a moderate-energy diet (OVE; NEL = 1.62 Mcal/kg) during the dry period. Blood for PMNL isolation and metabolite analysis was collected at −14 and +7 days relative to parturition. At an analysis of variance false discovery rate <0.05, energy intake (OVE vs CON) influenced 1806 genes. Dynamic Impact Approach bioinformatics analysis classified treatment effects on Kyoto Encyclopedia of Genes and Genomes pathways, including activated oxidative phosphorylation and biosynthesis of unsaturated fatty acids and inhibited RNA polymerase, proteasome, and toll-like receptor signaling pathway. This analysis indicates that processes critical for energy metabolism and cellular and immune function were affected with mixed results. However, overall interpretation of the transcriptome data agreed in part with literature documenting a potentially detrimental, chronic activation of PMNL in response to overfeeding. The widespread, transcriptome-level changes captured here confirm the importance of dietary energy adjustments around calving on the immune system.
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Affiliation(s)
- A Agrawal
- Division of Nutritional Sciences, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - M J Khan
- Division of Nutritional Sciences, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - D E Graugnard
- Division of Nutritional Sciences, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - M Vailati-Riboni
- Division of Nutritional Sciences, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - S L Rodriguez-Zas
- Division of Nutritional Sciences, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - J S Osorio
- Department of Dairy Science, South Dakota State University, Brookings, SD, USA
| | - J J Loor
- Division of Nutritional Sciences, Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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148
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Stankevicius V, Kuodyte K, Schveigert D, Bulotiene D, Paulauskas T, Daniunaite K, Suziedelis K. Gene and miRNA expression profiles of mouse Lewis lung carcinoma LLC1 cells following single or fractionated dose irradiation. Oncol Lett 2017; 13:4190-4200. [PMID: 28599420 PMCID: PMC5453008 DOI: 10.3892/ol.2017.5877] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 12/16/2016] [Indexed: 01/30/2023] Open
Abstract
In clinical practice ionizing radiation (IR) is primarily applied to cancer treatment in the form of fractionated dose (FD) irradiation. Despite this fact, a substantially higher amount of current knowledge in the field of radiobiology comes from in vitro studies based on the cellular response to single dose (SD) irradiation. In addition, intrinsic and acquired resistance to IR remains an issue in clinical practice, leading to radiotherapy treatment failure. Numerous previous studies suggest that an improved understanding of the molecular processes involved in the radiation-induced DNA damage response to FD irradiation could improve the effectiveness of radiotherapy. Therefore, the present study examined the differential expression of genes and microRNA (miRNA) in murine Lewis lung cancer (LLC)1 cells exposed to SD or FD irradiation. The results of the present study indicated that the gene and miRNA expression profiles of LLC1 cells exposed to irradiation were dose delivery type-dependent. Data analysis also revealed that mRNAs may be regulated by miRNAs in a radiation-dependent manner, suggesting that these mRNAs and miRNAs are the potential targets in the cellular response to SD or FD irradiation. However, LLC1 tumors after FD irradiation exhibited no significant changes in the expression of selected genes and miRNAs observed in the irradiated cells in vitro, suggesting that experimental in vitro conditions, particularly the tumor microenvironment, should be considered in detail to promote the development of efficient radiotherapy approaches. Nevertheless, the present study highlights the primary signaling pathways involved in the response of murine cancer cells to irradiation. Data presented in the present study can be applied to improve the outcome and development of radiotherapy in preclinical animal model settings.
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Affiliation(s)
- Vaidotas Stankevicius
- Laboratory of Molecular Oncology, National Cancer Institute, LT-08660 Vilnius, Lithuania.,Institute of Biosciences, Life Sciences Center, Vilnius University, LT-10224 Vilnius, Lithuania
| | - Karolina Kuodyte
- Laboratory of Molecular Oncology, National Cancer Institute, LT-08660 Vilnius, Lithuania.,Institute of Biosciences, Life Sciences Center, Vilnius University, LT-10224 Vilnius, Lithuania
| | - Diana Schveigert
- Laboratory of Molecular Oncology, National Cancer Institute, LT-08660 Vilnius, Lithuania
| | - Danute Bulotiene
- Laboratory of Biomedical Physics, National Cancer Institute, LT-08660 Vilnius, Lithuania
| | - Tomas Paulauskas
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-10224 Vilnius, Lithuania
| | - Kristina Daniunaite
- Institute of Biosciences, Life Sciences Center, Vilnius University, LT-10224 Vilnius, Lithuania
| | - Kestutis Suziedelis
- Laboratory of Molecular Oncology, National Cancer Institute, LT-08660 Vilnius, Lithuania.,Institute of Biosciences, Life Sciences Center, Vilnius University, LT-10224 Vilnius, Lithuania
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149
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Abou El Hassan M, Huang K, Eswara MBK, Xu Z, Yu T, Aubry A, Ni Z, Livne-Bar I, Sangwan M, Ahmad M, Bremner R. Properties of STAT1 and IRF1 enhancers and the influence of SNPs. BMC Mol Biol 2017; 18:6. [PMID: 28274199 PMCID: PMC5343312 DOI: 10.1186/s12867-017-0084-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 03/02/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND STAT1 and IRF1 collaborate to induce interferon-γ (IFNγ) stimulated genes (ISGs), but the extent to which they act alone or together is unclear. The effect of single nucleotide polymorphisms (SNPs) on in vivo binding is also largely unknown. RESULTS We show that IRF1 binds at proximal or distant ISG sites twice as often as STAT1, increasing to sixfold at the MHC class I locus. STAT1 almost always bound with IRF1, while most IRF1 binding events were isolated. Dual binding sites at remote or proximal enhancers distinguished ISGs that were responsive to IFNγ versus cell-specific resistant ISGs, which showed fewer and mainly single binding events. Surprisingly, inducibility in one cell type predicted ISG-responsiveness in other cells. Several dbSNPs overlapped with STAT1 and IRF1 binding motifs, and we developed methodology to rapidly assess their effects. We show that in silico prediction of SNP effects accurately reflects altered binding both in vitro and in vivo. CONCLUSIONS These data reveal broad cooperation between STAT1 and IRF1, explain cell type specific differences in ISG-responsiveness, and identify genetic variants that may participate in the pathogenesis of immune disorders.
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Affiliation(s)
- Mohamed Abou El Hassan
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada.,Clinical Chemistry Division, Provincial Laboratory Services, Queen Elizabeth Hospital, Charlottetown, PE, Canada.,Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Katherine Huang
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Manoja B K Eswara
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Zhaodong Xu
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Tao Yu
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Arthur Aubry
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Zuyao Ni
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada.,Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Izzy Livne-Bar
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Monika Sangwan
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Mohamad Ahmad
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada
| | - Rod Bremner
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Toronto, ON, Canada. .,Department of Lab Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada. .,Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON, Canada.
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150
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STAT2 is an essential adaptor in USP18-mediated suppression of type I interferon signaling. Nat Struct Mol Biol 2017; 24:279-289. [PMID: 28165510 PMCID: PMC5365074 DOI: 10.1038/nsmb.3378] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 01/13/2017] [Indexed: 02/07/2023]
Abstract
Type I interferons (IFNs) are multifunctional cytokines that regulate immune responses and cellular functions but also can have detrimental effects on human health. A tight regulatory network therefore controls IFN signaling, which in turn may interfere with medical interventions. The JAK-STAT signaling pathway transmits the IFN extracellular signal to the nucleus, thus resulting in alterations in gene expression. STAT2 is a well-known essential and specific positive effector of type I IFN signaling. Here, we report that STAT2 is also a previously unrecognized, crucial component of the USP18-mediated negative-feedback control in both human and mouse cells. We found that STAT2 recruits USP18 to the type I IFN receptor subunit IFNAR2 via its constitutive membrane-distal STAT2-binding site. This mechanistic coupling of effector and negative-feedback functions of STAT2 may provide novel strategies for treatment of IFN-signaling-related human diseases.
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