551
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Spermidine alleviates experimental autoimmune encephalomyelitis through inducing inhibitory macrophages. Cell Death Differ 2016; 23:1850-1861. [PMID: 27447115 PMCID: PMC5071574 DOI: 10.1038/cdd.2016.71] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/31/2016] [Accepted: 06/22/2016] [Indexed: 12/20/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic and debilitating autoimmune disease, characterized by chronic inflammatory demyelination in the nervous tissue and subsequent neurological dysfunction. Spermidine, a natural polyamine, has been shown to affect inflammation in some experimental models. We show here that spermidine could alleviate experimental autoimmune encephalomyelitis (EAE), a model for MS, through regulating the infiltration of CD4+ T cells and macrophages in central nervous system. Unexpectedly, we found that spermidine treatment of MOG-specific T cells did not affect their pathogenic potency upon adaptive transfer; however, spermidine diminished the ability of macrophages in activating MOG-specific T cells ex vivo. Depletion of macrophages in diseased mice completely abolished the therapeutic effect of spermidine, indicating a critical role of spermidine-activated macrophages. Mechanistically, spermidine was found to specifically suppress the expression of interleukin-1beta (IL-1β), IL-12 and CD80 while enhance the expression of arginase 1 in macrophages. Interestingly, macrophages from spermidine-treated mice could also reverse EAE progression, while pretreatment of those macrophages with the arginase 1 inhibitor abrogated the therapeutic effect. Therefore, our studies revealed a critical role of macrophages in spermidine-mediated treatment on EAE and provided novel information for better management of MS.
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552
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Xu T, Shen X, Seyfert HM. Stearoyl-CoA desaturase 1 expression is downregulated in liver and udder during E. coli mastitis through enhanced expression of repressive C/EBP factors and reduced expression of the inducer SREBP1A. BMC Mol Biol 2016; 17:16. [PMID: 27439381 PMCID: PMC4955114 DOI: 10.1186/s12867-016-0069-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 07/13/2016] [Indexed: 01/21/2023] Open
Abstract
Background Stearoyl-CoA desaturase 1 (SCD1) desaturates long chain fatty acids and is therefore a key enzyme in fat catabolism. Its synthesis is downregulated in liver during illnesses caused by high levels of circulating lipopolysaccharide (LPS). SCD1 expression is known to be stimulated under adipogenic conditions through a variety of transcription factors, notably SREBP1 and C/EBPα and −β. However, mechanisms downregulating SCD1 expression during illness related reprograming of the metabolism were unknown. Escherichia coli elicited mastitis is an example of such a condition and was found to downregulates milk and milk fat synthesis. This is in part mediated through epigenetic mechanisms. We analyzed here mechanism controlling SCD1 expression in livers and udders from cows suffering from experimentally induced E. coli mastitis. Results We validated with RT-qPCR that SCD1 expression was reduced in these organs of the experimental cows. They also featured decreased levels of mRNAs encoding SREBP1a but increased levels for C/EBP α and −β. Chromatin accessibility PCR (CHART) revealed that downregulation of SCD1 expression in liver was not caused by tighter chromatin compaction of the SCD1 promoter. Reporter gene analyses showed in liver (HepG2) and mammary epithelial (MAC-T) model cells that overexpression of SREBP1a expectedly activated the promoter, while unexpectedly C/EBPα and −β strongly quenched the promoter activity. Abrogation of two from among of the three C/EBP DNA-binding motifs of the promoter revealed that C/EBPα acts in cis but C/EBPβ in trans. Overexpressing truncated C/EBPα or −β factors lacking their repressive domains confirmed in both model cells the direct action of C/EBPα, but not of C/EBPβ on the promoter. Conclusions We found no evidence that epigenetic mechanism remodeling the chromatin compaction of the SCD1 promoter would contribute to downregulate SCD1 expression during infection. Instead, our data show for the first time that C/EBP factors may repress SCD1 expression in liver and udder rather than stimulating as it was previously shown in adipocytes. This cell type specific dual and opposite function of C/EBP factors for regulating SCD1 expression was previously unknown. Infection related activation of their expression combined with downregulated expression of SREBP1a explains reduced SCD1 expression in liver and udder during acute mastitis. Electronic supplementary material The online version of this article (doi:10.1186/s12867-016-0069-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tianle Xu
- Leibniz Institute for Farm Animal Biology, Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.,College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, People's Republic of China
| | - Xiangzhen Shen
- College of Veterinary Medicine, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, People's Republic of China
| | - Hans-Martin Seyfert
- Leibniz Institute for Farm Animal Biology, Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
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553
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[Expression profiles of PI3K, NF-κB, and STAT1 in peripheral blood mononuclear cells in children with bronchial asthma]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016. [PMID: 27412544 PMCID: PMC7388980 DOI: 10.7499/j.issn.1008-8830.2016.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To study the expression profiles of PI3K, NF-κB, and STAT1 in peripheral blood mononuclear cells (PBMCs) in children with bronchial asthma, as well as their roles in the pathogenesis of asthma. METHODS Thirty children with acute exacerbation of bronchial asthma were enrolled as the asthma group, and 20 healthy children were enrolled as the control group. RT-PCR and Western blot were used to measure the mRNA and protein expression levels of PI3K, NF-κB, and STAT1 in PBMCs. A spirometer was used to compare the pulmonary function between the two groups. The correlations between the mRNA expression of PI3K, NF-κB, and STAT1 and pulmonary function in children with bronchial asthma were analyzed. RESULTS The asthma group had significantly higher mRNA and protein expression levels of PI3K, NF-κB, and STAT1 than the control group (P<0.05). Compared with the control group, the asthma group showed significant reductions in pulmonary function indices such as FEV1%, FEV1/FVC, and PEF% (P<0.05). In children with bronchial asthma, the mRNA expression levels of PI3K, NF-κB, and STAT1 were negatively correlated with FEV1%, FEV1/FVC, and PEF% (P<0.05). CONCLUSIONS The expression levels of PI3K, NF-κB, and STAT1 increase in children with asthma, and are negatively correlated with pulmonary function indices, suggesting that PI3K, NF-κB and STAT1 are involved in the development and progression of bronchial asthma in children.
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554
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Zhu L, Cao M, Ni Y, Han L, Dai A, Chen R, Ning X, Liu X, Ke K. Up-Regulation of TAB3 Is Involved in Neuronal Apoptosis After Intracerebral Hemorrhage. Cell Mol Neurobiol 2016; 37:607-617. [PMID: 27352012 DOI: 10.1007/s10571-016-0397-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 06/15/2016] [Indexed: 12/19/2022]
Abstract
Human transforming growth factor β-activated kinase (TAK1)-binding protein 3 (TAB3) is a regulator of NF-κB which has been mainly found in a variety of cancers. While TAB3 is highly expressed in brain tissue, little is known about the function of TAB3 in central nervous system. Our group established an animal ICH model with autologous whole blood injected into brain, and also a cell ICH model with hemin stimulation. Our Western blot result showed up-regulation of TAB3 during neuronal apoptosis in the model of intracerebral hemorrhage (ICH), which was also approved by immunofluorescence and immunohistochemistry result. Besides, increasing TAB3 level was accompanied by the increased expression of active-caspase-3, active-caspase-8, and decreased expression of Bcl-2. Furthermore, in in vitro study, the level of neuronal apoptosis was decreased by applying TAB3- RNA interference in PC12 cells. All the results above suggested that TAB3 probably participates in the process of neuronal apoptosis following ICH.
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Affiliation(s)
- Liang Zhu
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.,Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Maohong Cao
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yaohui Ni
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Lijian Han
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.,Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Aihua Dai
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.,Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Rongrong Chen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xiaojin Ning
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xiaorong Liu
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Kaifu Ke
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China.
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555
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Monastra G, De Grazia S, Cilaker Micili S, Goker A, Unfer V. Immunomodulatory activities of alpha lipoic acid with a special focus on its efficacy in preventing miscarriage. Expert Opin Drug Deliv 2016; 13:1695-1708. [DOI: 10.1080/17425247.2016.1200556] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Giovanni Monastra
- Department of Experimental Medicine, University la Sapienza, Rome, Italy
| | - Sara De Grazia
- Department of Research and Development, LO.LI. Pharma, Rome, Italy
| | | | - Asli Goker
- Department of Obstetrics and Gynecology, Celal Bayar University, Manisa, Turkey
| | - Vittorio Unfer
- Department of Medical Sciences, UNIIPUS – Private Swiss University Institute, Chiasso, Switzerland
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556
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Boztug H, Hirschmugl T, Holter W, Lakatos K, Kager L, Trapin D, Pickl W, Förster-Waldl E, Boztug K. NF-κB1 Haploinsufficiency Causing Immunodeficiency and EBV-Driven Lymphoproliferation. J Clin Immunol 2016; 36:533-40. [PMID: 27338827 PMCID: PMC4940442 DOI: 10.1007/s10875-016-0306-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 05/10/2016] [Indexed: 01/29/2023]
Abstract
Purpose NF-κB signaling is critically important for regulation of both innate and adaptive immune responses. While activation of NF-κB has been implicated in malignancies such as leukemia and lymphoma, loss-of-function mutations affecting different NF-κB pathway components have been shown to cause primary immunodeficiency disorders. Recently, haploinsufficiency of NF-κB1 has been described in three families with common variable immunodeficiency (CVID). Methods and Results We studied a patient with recurrent respiratory infections and bacterial parapharyngeal abscess. Immunological investigations revealed normal total B- cell numbers, but hypogammaglobulinemia, decreased frequencies of class-switched B cells and impaired T-cell proliferation. Targeted next-generation sequencing using a custom-designed panel comprising all known PID genes (IUIS 2014 classification) and novel candidate genes identified a novel heterozygous frameshift mutation in the NFKB1 gene leading to a premature stop codon (c.491delG; p.G165A*31). We could show that the mutation leads to reduced phosphorylation of p105 upon stimulation, resulting in decreased protein levels of p50. The further disease course was mainly characterized by two episodes of severe EBV-associated lymphoproliferative disease responsive to rituximab treatment. Due to disease severity, the patient is considered for allogeneic hematopoietic stem cell transplantation. Interestingly, the father carries the same heterozygous NFKB1 mutation and also shows decreased frequencies of memory B cells but has a much milder clinical phenotype, in line with a considerable phenotypic disease heterogeneity. Conclusions Deficiency of NF-κB1 leads to immunodeficiency with a wider phenotypic spectrum of disease manifestation than previously appreciated, including EBV lymphoproliferative diseases as a hitherto unrecognized feature of the disease. Electronic supplementary material The online version of this article (doi:10.1007/s10875-016-0306-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Heidrun Boztug
- St. Anna Kinderspital, Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Tatjana Hirschmugl
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Lazarettgasse 14 AKH BT 25.3, Vienna, Austria
| | - Wolfgang Holter
- St. Anna Kinderspital, Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Karoly Lakatos
- St. Anna Kinderspital, Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Leo Kager
- St. Anna Kinderspital, Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Doris Trapin
- Institute of Immunology, Center for Pathophysiology, Infectiology, and Immunology, Medical University of Vienna, Vienna, Austria
| | - Winfried Pickl
- Institute of Immunology, Center for Pathophysiology, Infectiology, and Immunology, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Förster-Waldl
- Department of Pediatrics and Adolescent Medicine, Medical University Vienna, Vienna, Austria
| | - Kaan Boztug
- St. Anna Kinderspital, Department of Pediatrics, Medical University of Vienna, Vienna, Austria. .,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Lazarettgasse 14 AKH BT 25.3, Vienna, Austria. .,Department of Pediatrics and Adolescent Medicine, Medical University Vienna, Vienna, Austria. .,Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Lazarettgasse 14 AKH BT 25.3, Vienna, Austria.
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557
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Abstract
The genes associated with Sjögren syndrome (SS) can be assigned to the NF-kB pathway, the IFN signaling pathway, lymphocyte signaling, and antigen presentation. The frequencies of risk variants show they are common with modest genetic effects. The strongest genetic association outside the human leukocyte antigen region is in IRF5, a gene relevant in the IFN signaling pathway and for B cell differentiation. Although no association has been found with the NF-kB gene itself, associations in TNFAIP3 and TNIP1 (both genome-wide significant), VCAM1 and IRAK1BP (both suggestive), point to genetic explanations for dysregulation of the NF-kB pathway in SS.
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Affiliation(s)
- Tove Ragna Reksten
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, 825 Northeast 13th Street, Oklahoma City, OK 73104, USA; Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, The Laboratory Building, Haukeland University Hospital, Jonas Lies vei 87, N-5021 Bergen, Norway
| | - Christopher J Lessard
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, 825 Northeast 13th Street, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Boulevard, MBSB 451, Oklahoma City, OK 73104, USA
| | - Kathy L Sivils
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, 825 Northeast 13th Street, Oklahoma City, OK 73104, USA; Department of Pathology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Boulevard, MBSB 451, Oklahoma City, OK 73104, USA.
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558
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Soria-Valles C, Gutiérrez-Fernández A, Osorio FG, Carrero D, Ferrando AA, Colado E, Fernández-García MS, Bonzon-Kulichenko E, Vázquez J, Fueyo A, López-Otín C. MMP-25 Metalloprotease Regulates Innate Immune Response through NF-κB Signaling. THE JOURNAL OF IMMUNOLOGY 2016; 197:296-302. [PMID: 27259858 DOI: 10.4049/jimmunol.1600094] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 05/02/2016] [Indexed: 01/15/2023]
Abstract
Matrix metalloproteases (MMPs) regulate innate immunity acting over proinflammatory cytokines, chemokines, and other immune-related proteins. MMP-25 (membrane-type 6-MMP) is a membrane-bound enzyme predominantly expressed in leukocytes whose biological function has remained largely unknown. We have generated Mmp25-deficient mice to elucidate the in vivo function of this protease. These mutant mice are viable and fertile and do not show any spontaneous phenotype. However, Mmp25-null mice exhibit a defective innate immune response characterized by low sensitivity to bacterial LPS, hypergammaglobulinemia, and reduced secretion of proinflammatory molecules. Moreover, these immune defects can be tracked to a defective NF-κB activation observed in Mmp25-deficient leukocytes. Globally, our findings provide new mechanistic insights into innate immunity through the activity of MMP-25, suggesting that this proteinase could be a potential therapeutic target for immune-related diseases.
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Affiliation(s)
- Clara Soria-Valles
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Ana Gutiérrez-Fernández
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Fernando G Osorio
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Dido Carrero
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Adolfo A Ferrando
- Institute for Cancer Genetics, Columbia University, New York, NY 10032
| | - Enrique Colado
- Servivio de Hematología, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain
| | | | - Elena Bonzon-Kulichenko
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain; and
| | - Jesús Vázquez
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain; and
| | - Antonio Fueyo
- Área de Fisiología, Departamento de Biología Funcional, Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Carlos López-Otín
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Instituto Universitario de Oncología, Universidad de Oviedo, 33006 Oviedo, Spain;
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559
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Allenspach E, Torgerson TR. Autoimmunity and Primary Immunodeficiency Disorders. J Clin Immunol 2016; 36 Suppl 1:57-67. [PMID: 27210535 DOI: 10.1007/s10875-016-0294-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 05/02/2016] [Indexed: 12/14/2022]
Abstract
Advances in DNA sequencing technologies have led to a quickening in the pace at which new genetic immunodeficiency disorders have been identified. Among the newly identified defects are a number of disorders that present primarily with autoimmunity as opposed to recurrent infections. These "immune dysregulation" disorders have begun to cluster together to form an increased understanding of some of the basic molecular mechanisms that underlie the establishment and maintenance of immune tolerance and the development of autoimmunity. This review will present three major themes that have emerged in our understanding of the mechanisms that underlie autoimmunity and immune dysregulation in humans.
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Affiliation(s)
- Eric Allenspach
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
- Seattle Children's Research Institute, 1900 9th Ave., JMB-7, Seattle, WA, 98101-1304, USA
| | - Troy R Torgerson
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA.
- Seattle Children's Research Institute, 1900 9th Ave., JMB-7, Seattle, WA, 98101-1304, USA.
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560
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Espín-Palazón R, Traver D. The NF-κB family: Key players during embryonic development and HSC emergence. Exp Hematol 2016; 44:519-27. [PMID: 27132652 DOI: 10.1016/j.exphem.2016.03.010] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 03/24/2016] [Accepted: 03/26/2016] [Indexed: 02/07/2023]
Abstract
The nuclear factor-κB (NF-κB) family is a crucial transcription factor group known mainly for its role in the regulation of the immune system and its response to infection in vertebrates. The signaling pathway leading to NF-κB activation and translocation to the nucleus to exert its function as a transcription factor is well conserved among Kingdom Animalia, which has helped to elucidate other roles that NF-κB plays in other biological contexts such as developmental biology. The manipulation of NF-κB members in a diverse range of animal models results in severe developmental defects during embryogenesis, very often leading to embryonic lethality. Defects include dorsal-ventral patterning and limb, liver, skin, lung, neural, notochord, muscle, skeletal, and hematopoietic defects. Here, we recapitulate the research that has been done to address the role that NF-κB plays during embryonic development, in particular to emphasize its recently discovered role in the specification of hematopoietic stem cells (HSCs), the foundation of the hematopoietic system in vertebrates.
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Affiliation(s)
- Raquel Espín-Palazón
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA
| | - David Traver
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA.
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561
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Detel D, Buljevic S, Pucar LB, Kucic N, Pugel EP, Varljen J. Influence of CD26/dipeptidyl peptidase IV deficiency on immunophenotypic changes during colitis development and resolution. J Physiol Biochem 2016; 72:405-19. [DOI: 10.1007/s13105-016-0491-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 04/20/2016] [Indexed: 01/01/2023]
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562
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Fan T, Wang S, Yu L, Yi H, Liu R, Geng W, Wan X, Ma Y, Cai L, Chen YH, Ruan Q. Treating psoriasis by targeting its susceptibility gene Rel. Clin Immunol 2016; 165:47-54. [DOI: 10.1016/j.clim.2016.03.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/02/2016] [Accepted: 03/13/2016] [Indexed: 12/22/2022]
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563
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Park MH, Hong JT. Roles of NF-κB in Cancer and Inflammatory Diseases and Their Therapeutic Approaches. Cells 2016; 5:cells5020015. [PMID: 27043634 PMCID: PMC4931664 DOI: 10.3390/cells5020015] [Citation(s) in RCA: 413] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/22/2016] [Accepted: 03/24/2016] [Indexed: 12/20/2022] Open
Abstract
Nuclear factor-κB (NF-κB) is a transcription factor that plays a crucial role in various biological processes, including immune response, inflammation, cell growth and survival, and development. NF-κB is critical for human health, and aberrant NF-κB activation contributes to development of various autoimmune, inflammatory and malignant disorders including rheumatoid arthritis, atherosclerosis, inflammatory bowel diseases, multiple sclerosis and malignant tumors. Thus, inhibiting NF-κB signaling has potential therapeutic applications in cancer and inflammatory diseases.
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Affiliation(s)
- Mi Hee Park
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungbuk 28160, Korea.
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungbuk 28160, Korea.
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564
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de Valle E, Grigoriadis G, O'Reilly LA, Willis SN, Maxwell MJ, Corcoran LM, Tsantikos E, Cornish JKS, Fairfax KA, Vasanthakumar A, Febbraio MA, Hibbs ML, Pellegrini M, Banerjee A, Hodgkin PD, Kallies A, Mackay F, Strasser A, Gerondakis S, Gugasyan R. NFκB1 is essential to prevent the development of multiorgan autoimmunity by limiting IL-6 production in follicular B cells. J Exp Med 2016; 213:621-41. [PMID: 27022143 PMCID: PMC4821646 DOI: 10.1084/jem.20151182] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 03/01/2016] [Indexed: 12/15/2022] Open
Abstract
de Valle et al. show that, with age, NFκB1-deficient B cells spontaneously secrete IL-6 and cause a multiorgan autoimmune disease. We examined the role of NFκB1 in the homeostasis and function of peripheral follicular (Fo) B cells. Aging mice lacking NFκB1 (Nfκb1−/−) develop lymphoproliferative and multiorgan autoimmune disease attributed in large part to the deregulated activity of Nfκb1−/− Fo B cells that produce excessive levels of the proinflammatory cytokine interleukin 6 (IL-6). Despite enhanced germinal center (GC) B cell differentiation, the formation of GC structures was severely disrupted in the Nfκb1−/− mice. Bone marrow chimeric mice revealed that the Fo B cell–intrinsic loss of NFκB1 led to the spontaneous generation of GC B cells. This was primarily the result of an increase in IL-6 levels, which promotes the differentiation of Fo helper CD4+ T cells and acts in an autocrine manner to reduce antigen receptor and toll-like receptor activation thresholds in a population of proliferating IgM+Nfκb1−/− Fo B cells. We demonstrate that p50-NFκB1 represses Il-6 transcription in Fo B cells, with the loss of NFκB1 also resulting in the uncontrolled RELA-driven transcription of Il-6. Collectively, our findings identify a previously unrecognized role for NFκB1 in preventing multiorgan autoimmunity through its negative regulation of Il-6 gene expression in Fo B cells.
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Affiliation(s)
- Elisha de Valle
- Burnet Institute, Melbourne, VIC 3004, Australia Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - George Grigoriadis
- School of Clinical Sciences, Monash University, Melbourne, VIC 3004, Australia Center for Cancer Research, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia Clinical Haematology, Monash and Alfred Health, Melbourne, VIC 3168, Australia
| | - Lorraine A O'Reilly
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Simon N Willis
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Mhairi J Maxwell
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Lynn M Corcoran
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Evelyn Tsantikos
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Jasper K S Cornish
- Burnet Institute, Melbourne, VIC 3004, Australia Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Kirsten A Fairfax
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Ajithkumar Vasanthakumar
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Mark A Febbraio
- Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW 2010, Australia
| | - Margaret L Hibbs
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Marc Pellegrini
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Ashish Banerjee
- Center for Cancer Research, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia
| | - Philip D Hodgkin
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Axel Kallies
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Fabienne Mackay
- Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Andreas Strasser
- Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC 3052, Australia Department of Medical Biology, University of Melbourne, Melbourne, VIC 3050, Australia
| | - Steve Gerondakis
- Infection and Immunity Program, Monash Biomedical Discovery Institute, Monash University, Melbourne, VIC 3004, Australia Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC 3004, Australia
| | - Raffi Gugasyan
- Burnet Institute, Melbourne, VIC 3004, Australia Immunology, Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
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565
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The Innate Immune Receptor NLRX1 Functions as a Tumor Suppressor by Reducing Colon Tumorigenesis and Key Tumor-Promoting Signals. Cell Rep 2016; 14:2562-75. [PMID: 26971998 PMCID: PMC4853907 DOI: 10.1016/j.celrep.2016.02.064] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 02/08/2016] [Accepted: 02/19/2016] [Indexed: 12/22/2022] Open
Abstract
NOD-like receptor (NLR) proteins are intracellular innate immune sensors/receptors that regulate immunity. This work shows that NLRX1 serves as a tumor suppressor in colitis-associated cancer (CAC) and sporadic colon cancer by keeping key tumor promoting pathways in check. Nlrx1−/− mice were highly susceptible to CAC, showing increases in key cancer-promoting pathways including nuclear factor κB (NF-κB), mitogen-activated protein kinase (MAPK), signal transducer and activator of transcription 3 (STAT3), and interleukin 6 (IL-6). The tumor-suppressive function of NLRX1 originated primarily from the non-hematopoietic compartment. This prompted an analysis of NLRX1 function in the Apcmin/+ genetic model of sporadic gastrointestinal cancer. NLRX1 attenuated Apcmin/+ colon tumorigenesis, cellular proliferation, NF-κB, MAPK, STAT3 activation, and IL-6 levels. Application of anti-interleukin 6 receptor (IL6R) antibody therapy reduced tumor burden, increased survival, and reduced STAT3 activation in Nlrx1−/−Apcmin/+ mice. As an important clinical correlate, human colon cancer samples expressed lower levels of NLRX1 than healthy controls in multiple patient cohorts. These data implicate anti-IL6R as a potential personalized therapy for colon cancers with reduced NLRX1.
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566
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Mortezaee K, Sabbaghziarani F, Omidi A, Dehpour AR, Omidi N, Ghasemi S, Pasbakhsh P, Ragerdi Kashani I. Therapeutic value of melatonin post-treatment on CCl4-induced fibrotic rat liver. Can J Physiol Pharmacol 2016; 94:119-130. [DOI: 10.1139/cjpp-2015-0266] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Melatonin is known for being beneficial in targeting liver diseases. This study aimed to investigate whether melatonin post-treatment is capable of rat carbon tetrachloride (CCl4)-induced liver fibrosis reduction. Thirty-two male Sprague-Dawley rats were divided into 4 groups: normal; fibrosis with CCl4 injection (1 mL/kg) twice weekly for 8 weeks; phosphate-buffered saline (PBS); and melatonin (20 mg/kg) for a further 4 weeks on cessation of CCl4. At the beginning of week 13, liver tissue samples were used for hematoxylin-eosin (H&E), periodic acid-Schiff (PAS), Masson’s trichrome (MT), and Oil Red O staining, quantitative real-time PCR (qRT-PCR) analysis of the matrix metalloproteinase-9 (MMP-9), MMP-13, transforming growth factor-β1 (TGF-β1), Bcl-2, and Bax genes as well as immunofluorescence (IF) of the first 3, and sera for measurement of aspartate aminotransferase (AST), alanine aminotransferase (ALT), albumin, and hydroxyproline. Chronic administration of CCl4 followed by considerable increase in tissue disruption, macro- and micro-vesicles, collagen, lipid droplets (LDs), AST, ALT, hydroxyproline, TGF-β1, and Bax, and decrease in glycogen depository, albumin, Bcl-2, MMP-9, and MMP-13; however, the pattern was reverse when it comes to melatonin treatment (for all p < 0.05). Our results reveal the beneficial aspects of melatonin in treatment of liver fibrosis probably via inhibition of TGF-β1expression.
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Affiliation(s)
- Keywan Mortezaee
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Street, Tehran, Iran, 1417613151
| | - Fatemeh Sabbaghziarani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Street, Tehran, Iran, 1417613151
| | - Ameneh Omidi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Street, Tehran, Iran, 1417613151
| | - Ahmad Reza Dehpour
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Negar Omidi
- Department of Surgery, Ziaian Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Soudabeh Ghasemi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Street, Tehran, Iran, 1417613151
| | - Parichehr Pasbakhsh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Street, Tehran, Iran, 1417613151
| | - Iraj Ragerdi Kashani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Street, Tehran, Iran, 1417613151
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567
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Abstract
The treatment of immune-mediated inflammatory diseases (IMIDs) has dramatically improved over the last two decades by the development of a series of targeted biological therapies. This paper focuses on new developments in the treatment of IMIDs. In particular, we discuss how different ways of targeting the same mediators can lead to different efficacy and safety profiles, using B cell targeting as example. In addition, we discuss the emerging field of 'small molecules' that target specifically intracellular processes related to cytokine signaling, cell activation, cell migration, and other processes relevant to tissue inflammation.
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568
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Owusu-Ansah A, Ihunnah CA, Walker AL, Ofori-Acquah SF. Inflammatory targets of therapy in sickle cell disease. Transl Res 2016; 167:281-97. [PMID: 26226206 PMCID: PMC4684475 DOI: 10.1016/j.trsl.2015.07.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 07/01/2015] [Accepted: 07/07/2015] [Indexed: 12/20/2022]
Abstract
Sickle cell disease (SCD) is a monogenic globin disorder characterized by the production of a structurally abnormal hemoglobin (Hb) variant Hb S, which causes severe hemolytic anemia, episodic painful vaso-occlusion, and ultimately end-organ damage. The primary disease pathophysiology is intracellular Hb S polymerization and consequent sickling of erythrocytes. It has become evident for more than several decades that a more complex disease process contributes to the myriad of clinical complications seen in patients with SCD with inflammation playing a central role. Drugs targeting specific inflammatory pathways therefore offer an attractive therapeutic strategy to ameliorate many of the clinical events in SCD. In addition, they are useful tools to dissect the molecular and cellular mechanisms that promote individual clinical events and for developing improved therapeutics to address more challenging clinical dilemmas such as refractoriness to opioids or hyperalgesia. Here, we discuss the prospect of targeting multiple inflammatory pathways implicated in the pathogenesis of SCD with a focus on new therapeutics, striving to link the actions of the anti-inflammatory agents to a defined pathobiology, and specific clinical manifestations of SCD. We also review the anti-inflammatory attributes and the cognate inflammatory targets of hydroxyurea, the only Food and Drug Administration-approved drug for SCD.
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Affiliation(s)
- Amma Owusu-Ansah
- Division of Hematology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA; Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA
| | - Chibueze A Ihunnah
- Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA; Division of Pulmonary Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Aisha L Walker
- Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA; Division of Pulmonary Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Solomon F Ofori-Acquah
- Division of Hematology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA; Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA; Division of Pulmonary Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA.
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569
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Kopitar-Jerala N. Innate Immune Response in Brain, NF-Kappa B Signaling and Cystatins. Front Mol Neurosci 2015; 8:73. [PMID: 26696821 PMCID: PMC4673337 DOI: 10.3389/fnmol.2015.00073] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/16/2015] [Indexed: 12/29/2022] Open
Abstract
Recently several reports have demonstrated that innate immune response and inflammation have an important role in major neurodegenerative diseases. The activation of the NF-κB family of transcription factors is a key step in the regulation of pro inflammatory cytokine expression. Microglia and other cell types in the brain can be activated in response to endogenous danger molecules as well as aggregated proteins and brain injury. During the past couple of years several studies reported the role of cystatins in neuroinflammation and neurodegeneration. In the present review, I will summarize and analyze recent findings regarding the role of cystatins in inflammation and NF-κB activation. Type I cystatin stefin B (cystatin B) is an endogenous cysteine cathepsin inhibitor localized in the cytosol, mitochondria and nucleus. Mutations in the gene of stefin B are associated with the neurodegenerative disease known as Unverricht-Lundborg disease and microglial activation plays an important role in the pathogenesis of the disease. Stefin B deficient mice have increased caspase-11 expression and secreted higher amounts of pro-inflammatory cytokines. The increased caspase-11 gene expression, was a consequence of increased NF-κB activation.
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Affiliation(s)
- Nataša Kopitar-Jerala
- Department of Biochemistry, Molecular and Structural Biology, Jožef Stefan Institute Ljubljana, Slovenia
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570
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Zhang Y, Li X, Ciric B, Ma CG, Gran B, Rostami A, Zhang GX. Therapeutic effect of baicalin on experimental autoimmune encephalomyelitis is mediated by SOCS3 regulatory pathway. Sci Rep 2015; 5:17407. [PMID: 26616302 PMCID: PMC4663791 DOI: 10.1038/srep17407] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 10/29/2015] [Indexed: 12/17/2022] Open
Abstract
Natural compounds derived from medicinal plants have long been considered a rich source of novel therapeutic agents. Baicalin (Ba) is a bioactive flavonoid compound derived from the root of Scutellaria baicalensis, an herb widely used in traditional medicine for the treatment of various inflammatory diseases. In this study, we investigate the effects and mechanism of action of Ba in experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS). Ba treatment effectively ameliorated clinical disease severity in myelin oligodendrocyte glycoprotein (MOG)35–55 peptide-induced EAE, and reduced inflammation and demyelination of the central nervous system (CNS). Ba reduced infiltration of immune cells into the CNS, inhibited expression of proinflammatory molecules and chemokines, and prevented Th1 and Th17 cell differentiation via STAT/NFκB signaling pathways. Further, we showed that SOCS3 induction is essential to the effects of Ba, given that the inhibitory effect of Ba on pathogenic Th17 responses was largely abolished when SOCS3 signaling was knocked down. Taken together, our findings demonstrate that Ba has significant potential as a novel anti-inflammatory agent for therapy of autoimmune diseases such as MS.
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Affiliation(s)
- Yuan Zhang
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, Northwest China National Engineering Laboratory for Resource Development of Endangered Crude Drugs, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Xing Li
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, Northwest China National Engineering Laboratory for Resource Development of Endangered Crude Drugs, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Bogoljub Ciric
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Cun-Gen Ma
- Institute of Brain Science, Department of Neurology, Shanxi Datong University Medical School, Datong, China
| | - Bruno Gran
- Clinical Neurology Research Group, Division of Clinical Neuroscience, University of Nottingham School of Medicine, UK
| | | | - Guang-Xian Zhang
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
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571
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Katakam AK, Brightbill H, Franci C, Kung C, Nunez V, Jones C, Peng I, Jeet S, Wu LC, Mellman I, Delamarre L, Austin CD. Dendritic cells require NIK for CD40-dependent cross-priming of CD8+ T cells. Proc Natl Acad Sci U S A 2015; 112:14664-9. [PMID: 26561586 PMCID: PMC4664370 DOI: 10.1073/pnas.1520627112] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Dendritic cells (DCs) link innate and adaptive immunity and use a host of innate immune and inflammatory receptors to respond to pathogens and inflammatory stimuli. Although DC maturation via canonical NF-κB signaling is critical for many of these functions, the role of noncanonical NF-κB signaling via the serine/threonine kinase NIK (NF-κB-inducing kinase) remains unclear. Because NIK-deficient mice lack secondary lymphoid organs, we generated transgenic mice with targeted NIK deletion in CD11c(+) cells. Although these mice exhibited normal lymphoid organs, they were defective in cross-priming naive CD8(+) T cells following vaccination, even in the presence of anti-CD40 or polyinosinic:polycytidylic acid to induce DC maturation. This impairment reflected two intrinsic defects observed in splenic CD8(+) DCs in vitro, namely antigen cross-presentation to CD8(+) T cells and secretion of IL-12p40, a cytokine known to promote cross-priming in vivo. In contrast, antigen presentation to CD4(+) T cells was not affected. These findings reveal that NIK, and thus probably the noncanonical NF-κB pathway, is critical to allow DCs to acquire the capacity to cross-present antigen and prime CD8 T cells after exposure to licensing stimuli, such as an agonistic anti-CD40 antibody or Toll-like receptor 3 ligand.
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Affiliation(s)
- Anand K Katakam
- Department of Pathology, Genentech Inc., South San Francisco, CA 94080
| | - Hans Brightbill
- Department of Immunology, Genentech Inc., South San Francisco, CA 94080
| | - Christian Franci
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA 94080
| | - Chung Kung
- Department of Mouse Genetics, Genentech Inc., South San Francisco, CA 94080
| | - Victor Nunez
- Department of Pathology, Genentech Inc., South San Francisco, CA 94080
| | - Charles Jones
- Department of Pathology, Genentech Inc., South San Francisco, CA 94080
| | - Ivan Peng
- Department of Immunology, Genentech Inc., South San Francisco, CA 94080
| | - Surinder Jeet
- Department of Immunology, Genentech Inc., South San Francisco, CA 94080
| | - Lawren C Wu
- Department of Immunology, Genentech Inc., South San Francisco, CA 94080
| | - Ira Mellman
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA 94080;
| | - Lélia Delamarre
- Department of Cancer Immunology, Genentech Inc., South San Francisco, CA 94080
| | - Cary D Austin
- Department of Pathology, Genentech Inc., South San Francisco, CA 94080;
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572
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Abstract
Background: Diabetes aggravates brain injury after cerebral ischemia/reperfusion (I/R). Objective: To investigate whether limb I/R causes cerebral injury in a rat diabetes model and whether glycogen synthase kinase-3β (GSK-3β) is involved. Methods: Male adult Sprague-Dawley rats were assigned into streptozotocin-induced diabetes (n = 30; blood glucose ≥16.7 mmol/L) or control (n = 20) groups, further subdivided into diabetes I/R (3-hour femoral artery/vein clamping), diabetes-I/R + TDZD-8 (I/R plus GSK-3β inhibitor), diabetes-sham, control-sham and control-I/R groups (n = 10 each). Cortical and hippocampal morphology (hematoxylin/eosin); hippocampal CA1 apoptosis (TUNEL assay); cleaved caspase-3 (apoptosis), and Iba1 (microglial activation) protein expression (immunohistochemistry); phosphorylated/total GSK-3β and nuclear factor-κB (NF-κB) protein levels (Western blotting); and serum and brain tissue tumor necrosis factor (TNF)-α levels (enzyme-linked immunosorbent assay) were analyzed. Results: The diabetes-I/R group showed greater cortical and hippocampal injury, apoptosis, cleaved caspase-3 expression and Iba1 expression than the control-I/R group; TDZD-8 reduced injury/apoptosis and cleaved caspase-3/Iba1 expressions. The diabetes-I/R group had lower p-GSK-3β and p-NF-κBp65 expression than the control-I/R group (P < 0.05); TDZD-8 increased p-GSK-3β expression but decreased p-NF-κBp65 expression (P < 0.05). The diabetes-I/R group showed higher elevation of serum and brain tissue TNF-α than the control-I/R group (P < 0.05); TDZD-8 reduced TNF-α production. Conclusions: Diabetes exacerbates limb I/R-induced cerebral damage and activates NF-κB and GSK-3β.
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573
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3,5,4'-Tri-O-acetylresveratrol Attenuates Lipopolysaccharide-Induced Acute Respiratory Distress Syndrome via MAPK/SIRT1 Pathway. Mediators Inflamm 2015; 2015:143074. [PMID: 26648661 PMCID: PMC4663353 DOI: 10.1155/2015/143074] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 10/12/2015] [Accepted: 10/22/2015] [Indexed: 12/17/2022] Open
Abstract
The aim of the present research was to investigate the protecting effects of 3,5,4′-tri-O-acetylresveratrol (AC-Rsv) on LPS-induced acute respiratory distress syndrome (ARDS). Lung injuries have been evaluated by histological examination, wet-to-dry weight ratios, and cell count and protein content in bronchoalveolar lavage fluid. Inflammation was assessed by MPO activities and cytokine secretion in lungs and cells. The results showed that AC-Rsv significantly reduced the mortality of mice stimulated with LPS. Pretreatment of AC-Rsv attenuated LPS-induced histological changes, alleviated pulmonary edema, reduced blood vascular leakage, and inhibited the MPO activities in lungs. What was more, AC-Rsv and Rsv treatment reduced the secretion of TNF-α, IL-6, and IL-1β in lungs and NR8383 cells, respectively. Further exploration revealed that AC-Rsv and Rsv treatment relieved LPS-induced inhibition on SIRT1 expression and restrained the activation effects of LPS on MAPKs and NF-κB activation both in vitro and in vivo. More importantly, in vivo results have also demonstrated that the protecting effects of Rsv on LPS-induced inflammation would be neutralized when SIRT1 was in-hibited by EX527. Taken together, these results indicated that AC-Rsv protected lung tissue against LPS-induced ARDS by attenuating inflammation via p38 MAPK/SIRT1 pathway.
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574
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Jamshidi M, Fagerholm R, Khan S, Aittomäki K, Czene K, Darabi H, Li J, Andrulis IL, Chang-Claude J, Devilee P, Fasching PA, Michailidou K, Bolla MK, Dennis J, Wang Q, Guo Q, Rhenius V, Cornelissen S, Rudolph A, Knight JA, Loehberg CR, Burwinkel B, Marme F, Hopper JL, Southey MC, Bojesen SE, Flyger H, Brenner H, Holleczek B, Margolin S, Mannermaa A, Kosma VM, Dyck LV, Nevelsteen I, Couch FJ, Olson JE, Giles GG, McLean C, Haiman CA, Henderson BE, Winqvist R, Pylkäs K, Tollenaar RA, García-Closas M, Figueroa J, Hooning MJ, Martens JW, Cox A, Cross SS, Simard J, Dunning AM, Easton DF, Pharoah PD, Hall P, Blomqvist C, Schmidt MK, Nevanlinna H. SNP-SNP interaction analysis of NF-κB signaling pathway on breast cancer survival. Oncotarget 2015; 6:37979-94. [PMID: 26317411 PMCID: PMC4741978 DOI: 10.18632/oncotarget.4991] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 07/16/2015] [Indexed: 12/03/2022] Open
Abstract
In breast cancer, constitutive activation of NF-κB has been reported, however, the impact of genetic variation of the pathway on patient prognosis has been little studied. Furthermore, a combination of genetic variants, rather than single polymorphisms, may affect disease prognosis. Here, in an extensive dataset (n = 30,431) from the Breast Cancer Association Consortium, we investigated the association of 917 SNPs in 75 genes in the NF-κB pathway with breast cancer prognosis. We explored SNP-SNP interactions on survival using the likelihood-ratio test comparing multivariate Cox' regression models of SNP pairs without and with an interaction term. We found two interacting pairs associating with prognosis: patients simultaneously homozygous for the rare alleles of rs5996080 and rs7973914 had worse survival (HRinteraction 6.98, 95% CI=3.3-14.4, P=1.42E-07), and patients carrying at least one rare allele for rs17243893 and rs57890595 had better survival (HRinteraction 0.51, 95% CI=0.3-0.6, P = 2.19E-05). Based on in silico functional analyses and literature, we speculate that the rs5996080 and rs7973914 loci may affect the BAFFR and TNFR1/TNFR3 receptors and breast cancer survival, possibly by disturbing both the canonical and non-canonical NF-κB pathways or their dynamics, whereas, rs17243893-rs57890595 interaction on survival may be mediated through TRAF2-TRAIL-R4 interplay. These results warrant further validation and functional analyses.
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Affiliation(s)
- Maral Jamshidi
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, FI-00029 HUS, Finland
| | - Rainer Fagerholm
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, FI-00029 HUS, Finland
| | - Sofia Khan
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, FI-00029 HUS, Finland
| | - Kristiina Aittomäki
- Department of Clinical Genetics, University of Helsinki and Helsinki University Hospital, Helsinki, FI-00029 HUS, Finland
| | - Kamila Czene
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Hatef Darabi
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Jingmei Li
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Irene L. Andrulis
- Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Jenny Chang-Claude
- Department of Obstetrics and Gynecology, University of Ulm, Ulm, Germany
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Peter Devilee
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Peter A. Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
- Department of Medicine, Division of Hematology and Oncology, University of California at Los Angeles, Los Angeles, CA, USA
| | - Kyriaki Michailidou
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Manjeet K. Bolla
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Joe Dennis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Qin Wang
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Qi Guo
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Valerie Rhenius
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Sten Cornelissen
- Netherlands Cancer Institute, Antoni van Leeuwenhoek hospital, Amsterdam, The Netherlands
| | - Anja Rudolph
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Julia A. Knight
- Prosserman Centre for Health Research, Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Christian R. Loehberg
- Department of Gynaecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - Barbara Burwinkel
- Molecular Epidemiology Group, German Cancer Research Center, Heidelberg, Germany
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
| | - Frederik Marme
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
- National Center for Tumor Diseases, University of Heidelberg, Heidelberg, Germany
| | - John L. Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Melissa C. Southey
- Department of Pathology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Stig E. Bojesen
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, Herlev, Denmark
| | - Henrik Flyger
- Department of Breast Surgery, Herlev Hospital, Copenhagen University Hospital, Herlev, Denmark
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Sara Margolin
- Department of Oncology - Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Arto Mannermaa
- School of Medicine, Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, Kuopio, Finland
- Cancer Center of Eastern Finland, University of Eastern Finland, Kuopio, Finland
- Imaging Center, Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland
| | - Veli-Matti Kosma
- School of Medicine, Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, Kuopio, Finland
- Cancer Center of Eastern Finland, University of Eastern Finland, Kuopio, Finland
- Imaging Center, Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland
| | | | - Laurien Van Dyck
- Vesalius Research Center (VRC), VIB, Leuven, Belgium
- Laboratory for Translational Genetics, Department of Oncology, University of Leuven, Leuven, Belgium
| | - Ines Nevelsteen
- Multidisciplinary Breast Center, Medical Oncology, University Hospital Leuven, Leuven, Belgium
| | - Fergus J. Couch
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Janet E. Olson
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Graham G. Giles
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global health, The University of Melbourne, Melbourne, Australia
| | - Catriona McLean
- Anatomical Pathology, The Alfred Hospital, Melbourne, Australia
| | - Christopher A. Haiman
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Brian E. Henderson
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Robert Winqvist
- Laboratory of Cancer Genetics and Tumor Biology, Cancer Research and Translational Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
- Laboratory of Cancer Genetics and Tumor Biology, Northern Finland Laboratory Centre NordLab, Oulu, Finland
| | - Katri Pylkäs
- Laboratory of Cancer Genetics and Tumor Biology, Cancer Research and Translational Medicine, Biocenter Oulu, University of Oulu, Oulu, Finland
- Laboratory of Cancer Genetics and Tumor Biology, Northern Finland Laboratory Centre NordLab, Oulu, Finland
| | - Rob A.E.M. Tollenaar
- Department of Surgical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Montserrat García-Closas
- Division of Genetics and Epidemiology, Institute of Cancer Research, Sutton, SM2 5NG, UK
- Breakthrough Breast Cancer Research Centre, Division of Breast Cancer Research, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Jonine Figueroa
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Maartje J. Hooning
- Department of Medical Oncology, Erasmus MC Cancer Institute, AE Rotterdam, The Netherlands
| | - John W.M. Martens
- Department of Medical Oncology, Erasmus MC Cancer Institute, AE Rotterdam, The Netherlands
| | - Angela Cox
- Sheffield Cancer Research, Department of Oncology, University of Sheffield, Sheffield, UK
| | - Simon S. Cross
- Academic Unit of Pathology, Department of Neuroscience, University of Sheffield, Sheffield, UK
| | - Jacques Simard
- Centre Hospitalier Universitaire de Québec Research Center, Laval University, Québec City, Canada
| | - Alison M. Dunning
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Douglas F. Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Paul D.P. Pharoah
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Per Hall
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm SE-17177, Sweden
| | - Carl Blomqvist
- Department of Oncology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Marjanka K. Schmidt
- Netherlands Cancer Institute, Antoni van Leeuwenhoek hospital, Amsterdam, The Netherlands
| | - Heli Nevanlinna
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, FI-00029 HUS, Finland
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575
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Ma L, Chen X, Wang R, Duan H, Wang L, Liang L, Nan Y, Liu X, Liu A, Jin F. 3,5,4'-Tri-O-acetylresveratrol decreases seawater inhalation-induced acute lung injury by interfering with the NF-κB and i-NOS pathways. Int J Mol Med 2015; 37:165-72. [PMID: 26573555 DOI: 10.3892/ijmm.2015.2403] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 10/27/2015] [Indexed: 11/06/2022] Open
Abstract
Drowning is a cause of accidental mortality. However, survival may result in acute lung injury. The aim of the present study was to evaluate the effects of 3,5,4'-tri-O-acetylresveratrol (AC-Res) on acute lung injury (ALI) induced by seawater inhalation in rats. ALI models were established by the tracheal instillation of artificial seawater with or without 50 mg/kg AC-Res pretreatment for 7 days. Lung samples from different groups were harvested 4 h after the model was established. Histological changes, blood vessel permeability, inflammatory factor secretion and expression states of the nuclear factor-κB (NF-κB) and inducible NOS (i-NOS) pathway were assessed to evaluate seawater‑induced lung injury and the protective effects of acetylated resveratrol. The results showed that seawater inspiration led to physiological structure changes and an increased permeability of blood vessels. In addition, seawater stimulation enhanced the expression levels of nitric oxide (NO), tumor necrosis factor α (TNF-α) and interleukin-1 β (IL-1β) secretion in vitro and in vivo. Notably, seawater inhalation increased NF-κB and i-NOS expression in lungs and cells. On the other hand, pretreatment of AC-Res inhibited the abnormal expression of the NF-κB and i-NOS pathways, followed by decreased NO, TNF-α and IL-1β secretion, protein and cell content in bronchoalveolar lavage fluid (BALF) and Evans blue, protein and cell infiltration from blood vessels into lung tissues. The results therefore suggest that AC-Res attenuated seawater inhalation induced‑ALI by interfering with the NF-κB and i-NOS pathways.
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Affiliation(s)
- Lijie Ma
- Department of Respiration, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Xiangjun Chen
- Department of Respiration, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Ruixuan Wang
- Department of Respiration, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Hongtao Duan
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Libin Wang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Li Liang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yandong Nan
- Department of Respiration, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Xueying Liu
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Ao Liu
- Department of Respiration, Kunming General Hospital of Chengdu Military Command, Kunming, Yunnan 650032, P.R. China
| | - Faguang Jin
- Department of Respiration, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
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576
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Miller JRC, Träger U, Andre R, Tabrizi SJ. Mutant Huntingtin Does Not Affect the Intrinsic Phenotype of Human Huntington's Disease T Lymphocytes. PLoS One 2015; 10:e0141793. [PMID: 26529236 PMCID: PMC4631523 DOI: 10.1371/journal.pone.0141793] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 10/13/2015] [Indexed: 11/28/2022] Open
Abstract
Huntington’s disease is a fatal neurodegenerative condition caused by a CAG repeat expansion in the huntingtin gene. The peripheral innate immune system is dysregulated in Huntington’s disease and may contribute to its pathogenesis. However, it is not clear whether or to what extent the adaptive immune system is also involved. Here, we carry out the first comprehensive investigation of human ex vivo T lymphocytes in Huntington’s disease, focusing on the frequency of a range of T lymphocyte subsets, as well as analysis of proliferation, cytokine production and gene transcription. In contrast to the innate immune system, the intrinsic phenotype of T lymphocytes does not appear to be affected by the presence of mutant huntingtin, with Huntington’s disease T lymphocytes exhibiting no significant functional differences compared to control cells. The transcriptional profile of T lymphocytes also does not appear to be significantly affected, suggesting that peripheral immune dysfunction in Huntington’s disease is likely to be mediated primarily by the innate rather than the adaptive immune system. This study increases our understanding of the effects of Huntington’s disease on peripheral tissues, while further demonstrating the differential effects of the mutant protein on different but related cell types. Finally, this study suggests that the potential use of novel therapeutics aimed at modulating the Huntington’s disease innate immune system should not be extended to include the adaptive immune system.
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Affiliation(s)
- James R. C. Miller
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, United Kingdom
| | - Ulrike Träger
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, United Kingdom
| | - Ralph Andre
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, United Kingdom
| | - Sarah J. Tabrizi
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, United Kingdom
- * E-mail:
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577
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Klein T, Fung SY, Renner F, Blank MA, Dufour A, Kang S, Bolger-Munro M, Scurll JM, Priatel JJ, Schweigler P, Melkko S, Gold MR, Viner RI, Régnier CH, Turvey SE, Overall CM. The paracaspase MALT1 cleaves HOIL1 reducing linear ubiquitination by LUBAC to dampen lymphocyte NF-κB signalling. Nat Commun 2015; 6:8777. [PMID: 26525107 PMCID: PMC4659944 DOI: 10.1038/ncomms9777] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 10/02/2015] [Indexed: 12/12/2022] Open
Abstract
Antigen receptor signalling activates the canonical NF-κB pathway via the CARD11/BCL10/MALT1 (CBM) signalosome involving key, yet ill-defined roles for linear ubiquitination. The paracaspase MALT1 cleaves and removes negative checkpoint proteins, amplifying lymphocyte responses in NF-κB activation and in B-cell lymphoma subtypes. To identify new human MALT1 substrates, we compare B cells from the only known living MALT1(mut/mut) patient with healthy MALT1(+/mut) family members using 10-plex Tandem Mass Tag TAILS N-terminal peptide proteomics. We identify HOIL1 of the linear ubiquitin chain assembly complex as a novel MALT1 substrate. We show linear ubiquitination at B-cell receptor microclusters and signalosomes. Late in the NF-κB activation cycle HOIL1 cleavage transiently reduces linear ubiquitination, including of NEMO and RIP1, dampening NF-κB activation and preventing reactivation. By regulating linear ubiquitination, MALT1 is both a positive and negative pleiotropic regulator of the human canonical NF-κB pathway-first promoting activation via the CBM--then triggering HOIL1-dependent negative-feedback termination, preventing reactivation.
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Affiliation(s)
- Theo Klein
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Department of Oral Biological and Medical Science, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Center for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Shan-Yu Fung
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Child &Family Research Institute, BC Children's Hospital, Vancouver, British Columbia, Canada V6T 1Z3
| | - Florian Renner
- Novartis Institutes for BioMedical Research, Novartis Campus, Basel, CH-4056, Switzerland
| | - Michael A Blank
- Thermo Fisher Scientific, 355 River Oaks Parkway, San Jose, 95134 California, USA
| | - Antoine Dufour
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Department of Oral Biological and Medical Science, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Sohyeong Kang
- Child &Family Research Institute, BC Children's Hospital, Vancouver, British Columbia, Canada V6T 1Z3.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V5Z 4H4
| | - Madison Bolger-Munro
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Joshua M Scurll
- Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - John J Priatel
- Child &Family Research Institute, BC Children's Hospital, Vancouver, British Columbia, Canada V6T 1Z3.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V5Z 4H4
| | - Patrick Schweigler
- Novartis Institutes for BioMedical Research, Novartis Campus, Basel, CH-4056, Switzerland
| | - Samu Melkko
- Novartis Institutes for BioMedical Research, Novartis Campus, Basel, CH-4056, Switzerland
| | - Michael R Gold
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Rosa I Viner
- Thermo Fisher Scientific, 355 River Oaks Parkway, San Jose, 95134 California, USA
| | - Catherine H Régnier
- Novartis Institutes for BioMedical Research, Novartis Campus, Basel, CH-4056, Switzerland
| | - Stuart E Turvey
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Child &Family Research Institute, BC Children's Hospital, Vancouver, British Columbia, Canada V6T 1Z3
| | - Christopher M Overall
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Department of Oral Biological and Medical Science, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3.,Center for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
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578
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Tan X, Wei LJ, Fan GJ, Jiang YN, Yu XP. Effector responses of bovine blood neutrophils against Escherichia coli: Role of NOD1/NF-κB signalling pathway. Vet Immunol Immunopathol 2015; 168:68-76. [DOI: 10.1016/j.vetimm.2015.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 07/07/2015] [Accepted: 08/14/2015] [Indexed: 01/26/2023]
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579
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Jiang WD, Tang RJ, Liu Y, Kuang SY, Jiang J, Wu P, Zhao J, Zhang YA, Tang L, Tang WN, Zhou XQ, Feng L. Manganese deficiency or excess caused the depression of intestinal immunity, induction of inflammation and dysfunction of the intestinal physical barrier, as regulated by NF-κB, TOR and Nrf2 signalling, in grass carp (Ctenopharyngodon idella). FISH & SHELLFISH IMMUNOLOGY 2015; 46:406-416. [PMID: 26072140 DOI: 10.1016/j.fsi.2015.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 06/03/2015] [Accepted: 06/07/2015] [Indexed: 06/04/2023]
Abstract
Intestinal mucosal immune components and mRNA levels of inflammatory cytokines, tight junction proteins, antioxidant enzymes and related signalling molecules in young grass carp (Ctenopharyngodon idellus) under dietary manganese (Mn) deficiency or excess were investigated. Fish were fed the diets containing graded levels of Mn [3.65-27.86 mg Mn kg(-1) diet] for 8 weeks. The results demonstrated that Mn deficiency significantly decreased the lysozyme and acid phosphatase (ACP) activities, up-regulated tumour necrosis factor α (TNF-α), interleukin 8 and the signalling factor nuclear factor-κB p65, and down-regulated interleukin 10 (IL-10), transforming growth factor β1, inhibitor of signalling factors κB-α and target of rapamycin mRNA levels in the proximal intestine (PI), mid intestine (MI) and distal intestine (DI). However, Mn deficiency did not change the C3 content in the PI, whereas it decreased the C3 contents in the MI and DI. Additionally, Mn depletion also resulted in significantly low mRNA levels for tight junction proteins (claudin-b, claudin-c, claudin-15, occludin and zonula occludens-1), antioxidant enzymes (MnSOD, GPx and CAT) and NF-E2-related factor-2 in the intestines of fish. Excessive Mn exhibited toxic effects similar to Mn deficiency, where optimal Mn contents reversed those indicators. In conclusion, Mn deficiency or excess causes the depression of intestinal immunity, induction of inflammation and dysfunction of the intestinal physical barrier relating to NF-κB, TOR and Nrf2 signalling in grass carp. Furthermore, quadratic regression analysis at 95% maximum response of lysozyme and acid phosphatase activities in the distal intestine of young grass carp revealed the optimum dietary Mn levels to be 8.90 and 8.99 mg kg(-1) diet, respectively.
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Affiliation(s)
- Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Ren-Jun Tang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Jun Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Juan Zhao
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Wu-Neng Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
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580
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Moon G, Kim J, Min Y, Wi SM, Shim JH, Chun E, Lee KY. Phosphoinositide-dependent kinase-1 inhibits TRAF6 ubiquitination by interrupting the formation of TAK1-TAB2 complex in TLR4 signaling. Cell Signal 2015; 27:2524-33. [PMID: 26432169 DOI: 10.1016/j.cellsig.2015.09.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 09/18/2015] [Accepted: 09/28/2015] [Indexed: 01/28/2023]
Abstract
Phosphoinositide-dependent protein kinase 1 (PDK1) plays a key role in the phosphoinositide 3-kinase (PI3K)-PDK1-Akt pathway that induces cell survival and cardiovascular protections through anti-apoptosis, vasodilation, anti-inflammation, and anti-oxidative stress activities. Although several reports have proposed the negative role of PDK1 in Toll-like receptor 4 (TLR4) signaling, the molecular mechanism is still unknown. Here we show that PDK1 inhibits tumor necrosis factor (TNF) receptor-associated factor 6 (TRAF6) ubiquitination by interrupting the complex between transforming growth factor beta-activated kinase 1 (TAK1) and TAK1 binding protein 2 (TAB2), which negatively regulates TAK1 activity. The overexpression of PDK1 in 293/TLR4 cells resulted in suppressions of nuclear factor kappa B (NF-κB) activation and production of proinflammatory cytokines including interleukin (IL)-6 and TNF-α in response to lipopolysaccharide stimulation. Conversely, THP-1 human monocytes transiently cultured in low glucose medium displayed down-regulated PDK1 expression, and significantly enhanced TLR4-mediated signaling for the activation of NF-κB, demonstrating a negative role of PDK1. Biochemical studies revealed that PDK1 significantly interacted with TAK1, resulting in the inhibition of the association of TAB2 with TAK1, which led to the attenuation of TRAF6 ubiquitination. Moreover, PDK1-knockdown THP-1 cells displayed enhancement of downstream signals, activation of NF-κB, and increased production of pro-inflammatory cytokines IL-6, IL-1β, and TNF-α, which potentially led to the up-regulation of NF-κB-dependent genes in response to TLR4 stimulation. Collectively, the results demonstrate that PDK1 inhibits the formation of the TAK1-TAB2-TRAF6 complex and leads to the inhibition of TRAF6 ubiquitination, which negatively regulates the TLR4-mediated signaling for NF-κB activation.
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Affiliation(s)
- Gyuyoung Moon
- Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea
| | - Juhong Kim
- Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea
| | - Yoon Min
- Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea
| | - Sae Mi Wi
- Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea
| | - Jae-Hyuck Shim
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - Eunyoung Chun
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA 02115, USA; Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Ki-Young Lee
- Department of Molecular Cell Biology and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Republic of Korea.
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581
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Guan Y, Yao H, Wang J, Sun K, Cao L, Wang Y. NF-κB-DICER-miRs Axis Regulates TNF-α Expression in Responses to Endotoxin Stress. Int J Biol Sci 2015; 11:1257-68. [PMID: 26435691 PMCID: PMC4582149 DOI: 10.7150/ijbs.12611] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 08/07/2015] [Indexed: 12/19/2022] Open
Abstract
Unbalanced tumor necrosis factor (TNF)-α production is associated with pathogenesis of a variety of human diseases. However, the molecular pathways maintaining TNF-α homeostasis remain elusive. Here, we report that NF-κB/p65-DICER-miRs axis negatively regulates TNF-α production. We demonstrated that NF-κB bound to DICER promoter and transcriptionally regulated DICER expression. In addition, the NF-κB/DICER signaling suppresses TNF-α expression by generating mature forms of miR-125b and miR-130a which negatively regulate TNF-α mRNA. Furthermore, we showed that the hepatocyte-specific depletion of Dicer in mice resulted in TNF-α overproduction and sensitized the mice to endotoxin, which could be corrected by administration of miR-125b mimics. These data suggest that NF-κB/p65-DICER-miRs axis involved in maintaining of TNF-α homeostasis, and injection of miR-125b as a potential therapeutic method for septic shock.
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Affiliation(s)
- Yi Guan
- 1. Key Laboratory of Medical Cell Biology, China Medical University, Shenyang, 110122, China
| | - Hailan Yao
- 2. Laboratory of Neural Signal Transduction, Institute of Neuroscience, State Key Laboratory of Neuroscience, SIBS, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Junfeng Wang
- 2. Laboratory of Neural Signal Transduction, Institute of Neuroscience, State Key Laboratory of Neuroscience, SIBS, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Kailai Sun
- 3. Department of Medical Genetics, China Medical University, Shenyang, 110122, China
| | - Liu Cao
- 1. Key Laboratory of Medical Cell Biology, China Medical University, Shenyang, 110122, China
| | - Yizheng Wang
- 2. Laboratory of Neural Signal Transduction, Institute of Neuroscience, State Key Laboratory of Neuroscience, SIBS, Chinese Academy of Sciences, Shanghai, 200031, China
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582
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ZHANG ZEHUA, DAI FEI, CHENG PENG, LUO FEI, HOU TIANYONG, ZHOU QIANG, XIE ZHAO, DENG MOYUAN, XU JIANZHONG. Pitavastatin attenuates monocyte activation in response to orthopedic implant-derived wear particles by suppressing the NF-κB signaling pathway. Mol Med Rep 2015; 12:6932-8. [DOI: 10.3892/mmr.2015.4306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 07/07/2015] [Indexed: 11/05/2022] Open
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583
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Fliegauf M, L. Bryant V, Frede N, Slade C, Woon ST, Lehnert K, Winzer S, Bulashevska A, Scerri T, Leung E, Jordan A, Keller B, de Vries E, Cao H, Yang F, Schäffer A, Warnatz K, Browett P, Douglass J, Ameratunga R, van der Meer J, Grimbacher B. Haploinsufficiency of the NF-κB1 Subunit p50 in Common Variable Immunodeficiency. Am J Hum Genet 2015; 97:389-403. [PMID: 26279205 DOI: 10.1016/j.ajhg.2015.07.008] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 07/16/2015] [Indexed: 12/21/2022] Open
Abstract
Common variable immunodeficiency (CVID), characterized by recurrent infections, is the most prevalent symptomatic antibody deficiency. In ∼90% of CVID-affected individuals, no genetic cause of the disease has been identified. In a Dutch-Australian CVID-affected family, we identified a NFKB1 heterozygous splice-donor-site mutation (c.730+4A>G), causing in-frame skipping of exon 8. NFKB1 encodes the transcription-factor precursor p105, which is processed to p50 (canonical NF-κB pathway). The altered protein bearing an internal deletion (p.Asp191_Lys244delinsGlu; p105ΔEx8) is degraded, but is not processed to p50ΔEx8. Altered NF-κB1 proteins were also undetectable in a German CVID-affected family with a heterozygous in-frame exon 9 skipping mutation (c.835+2T>G) and in a CVID-affected family from New Zealand with a heterozygous frameshift mutation (c.465dupA) in exon 7. Given that residual p105 and p50—translated from the non-mutated alleles—were normal, and altered p50 proteins were absent, we conclude that the CVID phenotype in these families is caused by NF-κB1 p50 haploinsufficiency.
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584
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O'Rielly DD, Rahman P. Genetic, Epigenetic and Pharmacogenetic Aspects of Psoriasis and Psoriatic Arthritis. Rheum Dis Clin North Am 2015; 41:623-42. [PMID: 26476223 DOI: 10.1016/j.rdc.2015.07.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
There is a strong familial component to psoriatic disease as well as a complex array of genetic, immunologic, and environmental factors. The dominant genetic effect is located on chromosome 6p21.3 within the major histocompatibility complex region, accounting for one-third of genetic contribution. Genome-wide association studies (GWAS) identified additional genes, including skin barrier function, innate immune response, and adaptive immune response genes. To better understand disease susceptibility and progression requires replication in larger cohorts, fine-mapping efforts, new technologies, and functional studies of genetic variants, gene-gene interactions and gene-environmental interactions. New technologies available include next-generation sequencing, copy number variation analysis, and epigenetics.
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Affiliation(s)
- Darren D O'Rielly
- Faculty of Medicine, Health Sciences Centre, Memorial University of Newfoundland, 300 Prince Philip Drive, Room 1J440, St. John's, Newfoundland and Labrador A1B 3V6, Canada
| | - Proton Rahman
- St. Clare's Mercy Hospital, Memorial University of Newfoundland, 154 Le Marchant Road, St. John's, Newfoundland and Labrador A1C 5B8, Canada.
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585
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Wang F, Ma J, Wang KS, Mi C, Lee JJ, Jin X. Blockade of TNF-α-induced NF-κB signaling pathway and anti-cancer therapeutic response of dihydrotanshinone I. Int Immunopharmacol 2015; 28:764-72. [PMID: 26283590 DOI: 10.1016/j.intimp.2015.08.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 07/08/2015] [Accepted: 08/03/2015] [Indexed: 12/20/2022]
Abstract
The nuclear factor-κB (NF-κB) transcription factors control many physiological processes including inflammation, immunity, apoptosis, and angiogenesis. We identified dihydrotanshinone I as an inhibitor of NF-κB activation through our research on Salvia miltiorrhiza Bunge. In this study, we found that dihydrotanshinone I significantly inhibited the expression of NF-κB reporter gene induced by TNF-α in a dose-dependent manner. And dihydrotanshinone I also inhibited TNF-α induced phosphorylation and degradation of IκBα, phosphorylation and nuclear translocation of p65. Furthermore, pretreatment of cells with this compound prevented the TNF-α-induced expression of NF-κB target genes, such as anti-apoptosis (cIAP-1 and FLIP), proliferation (COX-2), invasion (MMP-9), angiogenesis (VEGF), and major inflammatory cytokines (TNF-α, IL-6, and MCP1). We also demonstrated that dihydrotanshinone I potentiated TNF-α-induced apoptosis. Moreover, dihydrotanshinone I significantly impaired activation of extracellular signal-regulated kinase 1/2 (ERK1/2), p38 and stress-activated protein kinase/c-Jun NH2-terminal kinase (JNK/SAPK). In vivo studies demonstrated that dihydrotanshinone I suppressed the growth of HeLa cells in a xenograft tumor model, which could be correlated with its modulation of TNF-α production. Taken together, dihydrotanshinone I could be a valuable candidate for the intervention of NF-κB-dependent pathological conditions such as inflammation and cancer.
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Affiliation(s)
- Fei Wang
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Juan Ma
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Ke Si Wang
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Chunliu Mi
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Jung Joon Lee
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xuejun Jin
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Ministry of education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
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586
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Fusco F, Pescatore A, Conte MI, Mirabelli P, Paciolla M, Esposito E, Lioi MB, Ursini MV. EDA-ID and IP, two faces of the same coin: how the same IKBKG/NEMO mutation affecting the NF-κB pathway can cause immunodeficiency and/or inflammation. Int Rev Immunol 2015; 34:445-59. [PMID: 26269396 DOI: 10.3109/08830185.2015.1055331] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Anhidrotic Ectodermal Dysplasia with ImmunoDeficiency (EDA-ID, OMIM 300291) and Incontinentia Pigmenti (IP, OMIM 308300) are two rare diseases, caused by mutations of the IKBKG/NEMO gene. The protein NEMO/IKKγ is essential for the NF-κB activation pathway, involved in a variety of physiological and cellular processes, such as immunity, inflammation, cell proliferation, and survival. A wide spectrum of IKBKG/NEMO mutations have been identified so far, and, on the basis of their effect on NF-κB activation, they are considered hypomorphic or amorphic (loss of function) mutations. IKBKG/NEMO hypomorphic mutations, reducing but not abolishing NF-κB activation, have been identified in EDA-ID and IP patients. Instead, the amorphic mutations, abolishing NF-κB activation by complete IKBKG/NEMO gene silencing, cause only IP. Here, we present an overview of IKBKG/NEMO mutations in EDA-ID and IP patients and describe similarities and differences between the clinical/immunophenotypic and genetic aspects, highlighting any T and B lymphocyte defect, and paying particular attention to the cellular and molecular defects that underlie the pathogenesis of both diseases.
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Affiliation(s)
- Francesca Fusco
- a Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' , IGB-CNR, Naples , Italy
| | - Alessandra Pescatore
- a Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' , IGB-CNR, Naples , Italy
| | | | | | - Mariateresa Paciolla
- a Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' , IGB-CNR, Naples , Italy.,c University of Basilicata , Potenza , Italy
| | - Elio Esposito
- a Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' , IGB-CNR, Naples , Italy
| | | | - Matilde Valeria Ursini
- a Institute of Genetics and Biophysics 'Adriano Buzzati-Traverso' , IGB-CNR, Naples , Italy.,b Fondazione SDN IRCCS , Naples , Italy
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587
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Tongaonkar P, Trinh KK, Schaal JB, Tran D, Gulko PS, Ouellette AJ, Selsted ME. Rhesus macaque θ-defensin RTD-1 inhibits proinflammatory cytokine secretion and gene expression by inhibiting the activation of NF-κB and MAPK pathways. J Leukoc Biol 2015; 98:1061-70. [PMID: 26269197 PMCID: PMC4661038 DOI: 10.1189/jlb.3a0315-102r] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 07/12/2015] [Indexed: 01/13/2023] Open
Abstract
The anti‐inflammatory effects of θ‐defensin RTD‐1 are mediated by cell signaling pathways that down‐regulate expression of pro‐inflammatory cytokines. θ‐Defensins are pleiotropic, macrocyclic peptides that are expressed uniquely in Old World monkeys. The peptides are potent, broad‐spectrum microbicides that also modulate inflammatory responses in vitro and in animal models of viral infection and polymicrobial sepsis. θ‐Defensins suppress proinflammatory cytokine secretion by leukocytes stimulated with diverse Toll‐like receptor (TLR) ligands. Studies were performed to delineate anti‐inflammatory mechanisms of rhesus θ‐defensin 1 (RTD‐1), the most abundant θ‐defensin isoform in macaque granulocytes. RTD‐1 reduced the secretion of tumor necrosis factor‐α (TNF‐α), interleukin (IL)‐1β, and IL‐8 in lipopolysaccharide (LPS)‐stimulated human blood monocytes and THP‐1 macrophages, and this was accompanied by inhibition of nuclear factor κB (NF‐κB) activation and mitogen‐activated protein kinase (MAPK) pathways. Peptide inhibition of NF‐κB activation occurred following stimulation of extracellular (TLRs 1/2 and 4) and intracellular (TLR9) receptors. Although RTD‐1 did not inhibit MAPK in unstimulated cells, it induced phosphorylation of Akt in otherwise untreated monocytes and THP‐1 cells. In the latter, this occurred within 10 min of RTD‐1 treatment and produced a sustained elevation of phosphorylated Akt (pAkt) for at least 4 h. pAkt is a negative regulator of MAPK and NF‐κB activation. RTD‐1 inhibited IκBα degradation and p38 MAPK phosphorylation, and stimulated Akt phosphorylation in LPS‐treated human primary monocytes and THP‐1 macrophages. Specific inhibition of phosphatidylinositol 3‐kinase (PI3K) blocked RTD‐1‐stimulated Akt phosphorylation and reversed the suppression of NF‐κB activation by the peptide. These studies indicate that the anti‐inflammatory properties of θ‐defensins are mediated by activation of the PI3K/Akt pathway and suppression of proinflammatory signals in immune‐stimulated cells.
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Affiliation(s)
- Prasad Tongaonkar
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Katie K Trinh
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Justin B Schaal
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Dat Tran
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Percio S Gulko
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - André J Ouellette
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Michael E Selsted
- *Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; and Division of Rheumatology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, USA
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588
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Lightfoot AP, Sakellariou GK, Nye GA, McArdle F, Jackson MJ, Griffiths RD, McArdle A. SS-31 attenuates TNF-α induced cytokine release from C2C12 myotubes. Redox Biol 2015; 6:253-259. [PMID: 26291279 PMCID: PMC4556772 DOI: 10.1016/j.redox.2015.08.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 08/07/2015] [Indexed: 02/08/2023] Open
Abstract
TNF-α is a key inflammatory mediator and is proposed to induce transcriptional responses via the mitochondrial generation of Reactive Oxygen Species (ROS). The aim of this study was to determine the effect of TNF-α on the production of myokines by skeletal muscle. Significant increases were seen in the release of IL-6, MCP-1/CCL2, RANTES/CCL5 and KC/CXCL1 and this release was inhibited by treatment with Brefeldin A, suggesting a golgi-mediated release of cytokines by muscle cells. An increase was also seen in superoxide in response to treatment with TNF-α, which was localised to the mitochondria and this was also associated with activation of NF-κB. The changes in superoxide, activation of NF-kB and release of myokines were attenuated following pre-treatment with SS-31 peptide indicating that the ability of TNF-α to induce myokine release may be mediated through mitochondrial superoxide, which is, at least in part, associated with activation of the redox sensitive transcription factor NF-kB.
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Affiliation(s)
- Adam P Lightfoot
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Giorgos K Sakellariou
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Gareth A Nye
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Francis McArdle
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Malcolm J Jackson
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Richard D Griffiths
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Anne McArdle
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom.
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589
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Strategies of NF-κB signaling modulation by ectromelia virus in BALB/3T3 murine fibroblasts. Microb Pathog 2015; 87:59-68. [PMID: 26232502 DOI: 10.1016/j.micpath.2015.07.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 07/25/2015] [Accepted: 07/27/2015] [Indexed: 12/22/2022]
Abstract
Nuclear factor κB (NF-κB) is a pleiotropic transcription factor that regulates the expression of immune response genes. NF-κB signaling can be disrupted by pathogens that prevent host immune response. In this work, we examined the influence of ectromelia (mousepox) virus (ECTV) on NF-κB signaling in murine BALB/3T3 fibroblasts. Activation of NF-κB via tumor necrosis factor (TNF) receptor 1 (TNFR1) in these cells induces proinflammatory cytokine secretion. We show that ECTV does not recruit NF-κB to viral factories or induce NF-κB nuclear translocation in BALB/3T3 cells. Additionally, ECTV counteracts TNF-α-induced p65 NF-κB nuclear translocation during the course of infection. Inhibition of TNF-α-induced p65 nuclear translocation was also observed in neighboring cells that underwent fusion with ECTV-infected cells. ECTV inhibits the key step of NF-κB activation, i.e. Ser32 phosphorylation and degradation of inhibitor κBα (IκBα) induced by TNF-α. We also observed that ECTV prevents TNF-α-induced Ser536 of p65 phosphorylation in BALB/3T3 cells. Studying TNFR1 signaling provides information about regulation of inflammatory response and cell survival. Unraveling poxviral immunomodulatory strategies may be helpful in drug target identification as well as in vaccine development.
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590
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Yang G, Tian X, Dong S, Peng M, Wang D. Effects of dietary Bacillus cereus G19, B. cereus BC-01, and Paracoccus marcusii DB11 supplementation on the growth, immune response, and expression of immune-related genes in coelomocytes and intestine of the sea cucumber (Apostichopus japonicus Selenka). FISH & SHELLFISH IMMUNOLOGY 2015; 45:800-807. [PMID: 26052012 DOI: 10.1016/j.fsi.2015.05.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 05/18/2015] [Accepted: 05/28/2015] [Indexed: 06/04/2023]
Abstract
Probiotics have positive effects on the nutrient digestibility and absorption, immune responses, and growth of aquatic animals, including the sea cucumber (Apostichopus japonicus Selenka). A 60-day feeding trial was conducted to evaluate the effects of Bacillus cereus G19, B. cereus BC-01 and Paracoccus marcusii DB11 supplementation on the growth, immune response, and expression level of four immune-related genes (Aj-p105, Aj-p50, Aj-rel, and Aj-lys) in coelomocytes and the intestine of juvenile sea cucumbers. One group was fed the basal diet (control group), while three other groups were fed the basal diet supplemented with B. cereus G19 (G19 group), B. cereus BC-01 (BC group), or P. marcusii DB11 (PM group). The growth rate of sea cucumbers fed diets with probiotics supplementation was significantly higher than that of the control group (P < 0.05). Sea cucumbers in the G19 and PM groups had a significantly greater phagocytic activity of coelomocytes compared to the control group (P < 0.05), while those in the G19 and BC groups had a greater respiratory burst activity (P < 0.05). The alkaline phosphatase (AKP) activity of coelomocytes in sea cucumbers fed diets with probiotics supplementation was significantly higher than the control group (P < 0.05). Comparatively, superoxide dismutase (SOD) activity of coelomocytes for sea cucumber in the PM group was significantly greater (P < 0.05). As for the immune-related genes, B. cereus G19 supplementation significantly increased the expression level of the Aj-rel gene in coelomocytes (P < 0.05), while B. cereus BC-01 supplementation significantly increased that of the Aj-p50 gene as compared to the control group (P < 0.05). In the intestine, the relative expression level of Aj-p105, Aj-p50, and Aj-lys genes in the PM group was significantly higher than that in the control group (P < 0.05). These results suggested that B. cereus G19 and B. cereus BC-01 supplementation could improve the growth performance and the immune response in coelomocytes, while P. marcusii DB11 supplementation could have a positive effect on the growth performance and immune response in coelomocytes and the intestine of sea cucumbers.
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Affiliation(s)
- Gang Yang
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266003, PR China
| | - Xiangli Tian
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266003, PR China.
| | - Shuanglin Dong
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266003, PR China
| | - Mo Peng
- School of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Dongdong Wang
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266003, PR China
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591
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Lu M, Zhang P, Li C, Zhang W, Jin C, Han Q. MiR-31 modulates coelomocytes ROS production via targeting p105 in Vibrio splendidus challenged sea cucumber Apostichopus japonicus in vitro and in vivo. FISH & SHELLFISH IMMUNOLOGY 2015; 45:293-299. [PMID: 25917973 DOI: 10.1016/j.fsi.2015.04.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/17/2015] [Accepted: 04/18/2015] [Indexed: 06/04/2023]
Abstract
MiR-31 is a critical regulator of gene expression in many pathogenic processes in vertebrates. In this study, we identified p105 as a novel target of miR-31 in Apostichopus japonicus and investigated their regulatory roles in vitro and in vivo. The negative expression profiles between miR-31 and Ajp105 were detected in both LPS-exposed primary coelomocytes and Vibrio splendidus-challenged sea cucumber. Co-infection miR-31 mimics significantly depressed the expression of Ajp105 and increased ROS production in vitro. In contrast, miR-31 inhibitor significantly elevated the expression of Ajp105 and decreased ROS level. Consistently, miR-31 over-expression or Ajp105 silencing in vivo both greatly promoted ROS accumulation. Taken together, our findings confirmed that miR-31 could modulate respiratory burst via targeting Ajp105 during sea cucumber pathological development.
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Affiliation(s)
- Meng Lu
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, PR China
| | - Pengjuan Zhang
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, PR China
| | - Chenghua Li
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, PR China.
| | - Weiwei Zhang
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, PR China
| | - Chunhua Jin
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, PR China
| | - Qingxi Han
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang Province 315211, PR China
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592
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Bauer I, Günther J, Wheeler TT, Engelmann S, Seyfert HM. Extracellular milieu grossly alters pathogen-specific immune response of mammary epithelial cells. BMC Vet Res 2015. [PMID: 26219462 PMCID: PMC4518681 DOI: 10.1186/s12917-015-0489-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Considerably divergent data have been published from attempts to model the E. coli vs. S. aureus specific immune reaction of the udder using primary cultures of bovine mammary epithelial cells from cows (pbMEC). Some groups reported a swift, strong and transient inflammatory response against challenges with E. coli and only a weak and retarded response against S. aureus, in agreement with the respective reaction of the udder. Others found almost the reverse. Presence or absence of fetal calf serum distinguished the experimental setting between both groups. We examined here if this causes the divergent reaction of the pbMEC towards both pathogen species. We challenged pbMEC with proteins from heat killed E. coli or S. aureus pathogens or purified TLR2 and TLR4 ligands. The stimuli were applied in normal growth medium with (SM10) or without (SM0) 10% fetal calf serum, or in the basal medium supplemented with 10 mg/ml milk proteins (SM Milk). RESULTS Withdrawal of FCS slowed down and decreased the extent by which E. coli or LPS enhanced the expression of cyto- and chemokine encoding genes through impaired TLR4 signalling but enforced their expression during stimulation with S. aureus. SM Milk strongly quenched the induction of those genes. S. aureus strain specific differences in the reaction of the pbMEC could only be recorded in SM0. NF-κB factors were activated by E. coli in all stimulation media, but only to a small extent by S. aureus, solely in SM0. Purified ligands for TLR2 stimulated expression of those genes and activated NF-κB equally well in SM10 and SM0. The mRNA destabilizing factor tristetraproline was only induced by E. coli in SM10 and by purified PAMPs. CONCLUSIONS Our data cross validate the correctness of previously published divergent data on the pathogen-specific induction of key immune genes in pbMEC. The differences are due to the presence of FCS, modulating signalling through TLR4 and TLR-unrelated pathogen receptors. S. aureus does not substantially activate any TLR signalling in MEC. Rather, receptors distinct from TLRs perceive the presence of S. aureus and control the immune response against this pathogen in MEC.
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Affiliation(s)
- Isabel Bauer
- Institute for Genome Biology, Leibniz Institute for Farm Animal Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
| | - Juliane Günther
- Institute for Genome Biology, Leibniz Institute for Farm Animal Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
| | - Thomas T Wheeler
- Dairy Foods, AgResearch Ltd, Ruakura Research Centre, Hamilton, 3240, New Zealand.
| | - Susanne Engelmann
- Institute for Microbiology, Technical University of Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany. .,Helmholtz Center for Infection Research, Microbial Proteomics, Inhoffenstraße 7, 38124, Braunschweig, Germany.
| | - Hans-Martin Seyfert
- Institute for Genome Biology, Leibniz Institute for Farm Animal Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
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593
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Mouse Cd59b but not Cd59a is upregulated to protect cells from complement attack in response to inflammatory stimulation. Genes Immun 2015. [PMID: 26204229 DOI: 10.1038/gene.2015.29] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Universally expressed CD59 is the sole membrane complement regulatory protein that protects host cells from complement damage by restricting membrane attack complex assembly. The human gene encodes a single CD59, whereas the mouse gene encodes a duplicated CD59, comprising mCd59a and mCd59b, with distinct tissue distribution. Recently, we revealed that Sp1 regulates constitutive CD59 transcription and that canonical nuclear factor kappa light chain enhancer of activated B cells (NF-κB) and cyclic AMP-responsive element-binding protein (CREB) regulate inducible CD59 transcription. However, the mechanisms that underlie mCd59 regulation remain unclear. Here we demonstrate that Sp1 controls broadly distributed mCd59a expression, whereas serum response factor (SRF) and canonical NF-κB regulate selectively expressed mCd59b. Tumor necrosis factor-α in vitro and lipopolysaccharide in vivo remarkably enhance the expression of mCd59b but not mCd59a by activating SRF and NF-κB, thus protecting cells from complement attack. In addition, cAMP analog treatment also dramatically increases mCd59b but not mCd59a expression in a manner independent of CREB, SRF and NF-κB. Therefore, mCd59b but not mCd59a may be the responder to external inflammatory stimuli and may have an important role in complement-mediated mouse models of disease.
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594
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Yakymenko I, Tsybulin O, Sidorik E, Henshel D, Kyrylenko O, Kyrylenko S. Oxidative mechanisms of biological activity of low-intensity radiofrequency radiation. Electromagn Biol Med 2015; 35:186-202. [PMID: 26151230 DOI: 10.3109/15368378.2015.1043557] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review aims to cover experimental data on oxidative effects of low-intensity radiofrequency radiation (RFR) in living cells. Analysis of the currently available peer-reviewed scientific literature reveals molecular effects induced by low-intensity RFR in living cells; this includes significant activation of key pathways generating reactive oxygen species (ROS), activation of peroxidation, oxidative damage of DNA and changes in the activity of antioxidant enzymes. It indicates that among 100 currently available peer-reviewed studies dealing with oxidative effects of low-intensity RFR, in general, 93 confirmed that RFR induces oxidative effects in biological systems. A wide pathogenic potential of the induced ROS and their involvement in cell signaling pathways explains a range of biological/health effects of low-intensity RFR, which include both cancer and non-cancer pathologies. In conclusion, our analysis demonstrates that low-intensity RFR is an expressive oxidative agent for living cells with a high pathogenic potential and that the oxidative stress induced by RFR exposure should be recognized as one of the primary mechanisms of the biological activity of this kind of radiation.
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Affiliation(s)
- Igor Yakymenko
- a Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine , Kyiv , Ukraine
| | - Olexandr Tsybulin
- b Department of Biophysics , Bila Tserkva National Agrarian University , Bila Tserkva , Ukraine
| | - Evgeniy Sidorik
- a Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine , Kyiv , Ukraine
| | - Diane Henshel
- c School of Public and Environmental Affairs , Indiana University Bloomington , Bloomington , IN , USA
| | - Olga Kyrylenko
- d A.I. Virtanen Institute, University of Eastern Finland , Kuopio , Finland
| | - Sergiy Kyrylenko
- e Department of Structural and Functional Biology , University of Campinas , Campinas , Brazil
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595
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Struzik J, Szulc-Dąbrowska L, Papiernik D, Winnicka A, Niemiałtowski M. Modulation of proinflammatory NF-κB signaling by ectromelia virus in RAW 264.7 murine macrophages. Arch Virol 2015; 160:2301-14. [PMID: 26141411 DOI: 10.1007/s00705-015-2507-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 06/19/2015] [Indexed: 02/07/2023]
Abstract
Macrophages are antigen-presenting cells (APCs) that play a crucial role in the innate immune response and may be involved in both clearance and spread of viruses. Stimulation of macrophages via Toll-like receptors (TLRs) results in activation of nuclear factor κB (NF-κB) and synthesis of proinflammatory cytokines. In this work, we show modulation of proinflammatory NF-κB signaling by a member of the family Poxviridae, genus Orthopoxvirus--ectromelia virus (ECTV)--in RAW 264.7 murine macrophages. ECTV interfered with p65 NF-κB nuclear translocation induced by TLR ligands such as lipopolysaccharide (LPS) (TLR4), polyinosinic-polycytidylic acid (poly(I:C)) (TLR3) and diacylated lipopeptide Pam2CSK4 (TLR2/6). We observed that ECTV modulates phosphorylation of Ser32 of inhibitor of κB (IκBα) and Ser536 of p65. Interference of ECTV with TLR signaling pathways implied that proinflammatory cytokine synthesis was inhibited. Our studies provide new insights into the strategies of proinflammatory signaling modulation by orthopoxviruses during their replication cycle in immune cells. Understanding important immune interactions between viral pathogens and APCs might contribute to the identification of drug targets and the development of vaccines.
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Affiliation(s)
- Justyna Struzik
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences - SGGW, Ciszewskiego 8, 02-786, Warsaw, Poland
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596
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Oguiza A, Recio C, Lazaro I, Mallavia B, Blanco J, Egido J, Gomez-Guerrero C. Peptide-based inhibition of IκB kinase/nuclear factor-κB pathway protects against diabetes-associated nephropathy and atherosclerosis in a mouse model of type 1 diabetes. Diabetologia 2015; 58:1656-67. [PMID: 25982245 DOI: 10.1007/s00125-015-3596-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 04/07/2015] [Indexed: 01/09/2023]
Abstract
AIMS/HYPOTHESIS The canonical nuclear factor-κB (NF-κB) pathway mediated by the inhibitor of NF-κB kinase (IKK) regulates the transcription of inflammatory genes involved in the pathogenesis of diabetes, from the early phase to progression and final complications. The NF-κB essential modulator binding domain (NBD) contained in IKKα/β is essential for IKK complex assembly. We therefore investigated the functional consequences of targeting the IKK-dependent NF-κB pathway in the progression of diabetes-associated nephropathy and atherosclerosis. METHODS Apolipoprotein E-deficient mice with diabetes induced by streptozotocin were treated with a cell-permeable peptide derived from the IKKα/β NBD region. Kidneys and aorta were analysed for morphology, leucocyte infiltrate, collagen, NF-κB activity and gene expression. In vitro studies were performed in renal and vascular cells. RESULTS NBD peptide administration did not affect the metabolic severity of diabetes but resulted in renal protection, as evidenced by dose-dependent decreases in albuminuria, renal lesions (mesangial expansion, leucocyte infiltration and fibrosis), intranuclear NF-κB activity and proinflammatory and pro-fibrotic gene expression. Furthermore, peptide treatment limited atheroma plaque formation in diabetic mice by decreasing the content of lipids, leucocytes and cytokines and increasing plaque stability markers. This nephroprotective and anti-atherosclerotic effect was accompanied by a decline in systemic T helper 1 cytokines. In vitro, NBD peptide prevented IKK assembly/activation, p65 nuclear translocation, NF-κB-regulated gene expression and cell proliferation induced by either high glucose or inflammatory stimulation. CONCLUSIONS/INTERPRETATION Peptide-based inhibition of IKK complex formation attenuates NF-κB activation, suppresses inflammation and retards the progression of renal and vascular injury in diabetic mice, thus providing a feasible approach against diabetes inflammatory complications.
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Affiliation(s)
- Ainhoa Oguiza
- Renal and Vascular Inflammation Group, IIS-Fundacion Jimenez Diaz, Autonoma University of Madrid, Avda. Reyes Catolicos, 2, 28040, Madrid, Spain
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597
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Qu L, Ji Y, Zhu X, Zheng X. hCINAP negatively regulates NF-κB signaling by recruiting the phosphatase PP1 to deactivate IKK complex. J Mol Cell Biol 2015; 7:529-42. [PMID: 26089539 DOI: 10.1093/jmcb/mjv041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 03/27/2015] [Indexed: 01/26/2023] Open
Abstract
Tight regulation of nuclear factor-κB (NF-κB) signaling is essential to maintain homeostasis in immune system in response to various stimuli, which has been studied extensively and deeply. However, the molecular mechanisms responsible for its negative regulation are not completely understood. Here we demonstrate that human coilin-interacting nuclear ATPase protein (hCINAP) is a novel negative regulator in NF-κB signaling by deactivating IκB kinase (IKK) complex. In response to TNF stimulation, hCINAP dynamically associates with IKKα and IKKβ and inhibits IKK phosphorylation. Notably, hCINAP directly interacts with the catalytic subunits of protein phosphatase 1 (PP1) and mediates the formation of IKK-hCINAP-PP1 complex, serving as an adaptor protein that recruits PP1 to dephosphorylate IKK. Furthermore, decreased levels of hCINAP are observed in several inflammatory diseases with NF-κB hyperactivity. Our study suggests a novel mechanism underlying deactivation of IKK and provides new insight into the negative regulation of NF-κB signaling.
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Affiliation(s)
- Linglong Qu
- State Key Lab of Protein and Plant Gene Research, Beijing 100871, China Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing 100871, China
| | - Yapeng Ji
- State Key Lab of Protein and Plant Gene Research, Beijing 100871, China Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing 100871, China
| | - Xi Zhu
- Department of Critical Care Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Xiaofeng Zheng
- State Key Lab of Protein and Plant Gene Research, Beijing 100871, China Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing 100871, China
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598
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Su X, Zhou G, Wang Y, Yang X, Li L, Yu R, Li D. The PPARβ/δ agonist GW501516 attenuates peritonitis in peritoneal fibrosis via inhibition of TAK1-NFκB pathway in rats. Inflammation 2015; 37:729-37. [PMID: 24337677 DOI: 10.1007/s10753-013-9791-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peritoneal fibrosis is a common consequence of long-term peritoneal dialysis (PD), and peritonitis is a factor in its onset. Agonist-bound peroxisome proliferator-activated receptors (PPARs) function as key regulators of energy metabolism and inflammation. Here, we examined the effects of PPARβ/δ agonist GW501516 on peritonitis in a rat peritoneal fibrosis model. Peritoneal fibrosis secondary to inflammation was induced into uremic rats by daily injection of Dianeal 4.25% PD solutions along with six doses of lipopolysaccharide before commencement of GW501516 treatment. Normal non-uremic rats served as control, and all rats were fed with a control diet or a GW501516-containing diet. Compared to control group, exposure to PD fluids caused peritoneal fibrosis that was accompanied by increased mRNA levels of monocyte chemoattractant protein-1, tumor necrotic factor-α, and interleukin-6 in the uremic rats, and these effects were prevented by GW501516 treatment. Moreover, GW501516 was found to attenuate glucose-stimulated inflammation in cultured rat peritoneal mesothelial cells via inhibition of transforming growth factor-β-activated kinase 1 (TAK1), and nuclear factor kappa B (NFκB) signaling pathway (TAK1-NFκB pathway), a main inflammation regulatory pathway. In conclusion, inhibition of TAK1-NFκB pathway with GW501516 may represent a novel therapeutic approach to ameliorate peritonitis-induced peritoneal fibrosis for patients on PD.
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Affiliation(s)
- Xuesong Su
- Department of Nephrology, Shengjing Hospital, China Medical University, 36 Sanhao Street, Shenyang, 110004, People's Republic of China
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599
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Hwang B, McCool K, Wan J, Wuerzberger-Davis SM, Young EWK, Choi EY, Cingolani G, Weaver BA, Miyamoto S. IPO3-mediated Nonclassical Nuclear Import of NF-κB Essential Modulator (NEMO) Drives DNA Damage-dependent NF-κB Activation. J Biol Chem 2015; 290:17967-17984. [PMID: 26060253 DOI: 10.1074/jbc.m115.645960] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Indexed: 11/06/2022] Open
Abstract
Activation of IκB kinase (IKK) and NF-κB by genotoxic stresses modulates apoptotic responses and production of inflammatory mediators, thereby contributing to therapy resistance and premature aging. We previously reported that genotoxic agents induce nuclear localization of NF-κB essential modulator (NEMO) via an undefined mechanism to arbitrate subsequent DNA damage-dependent IKK/NF-κB signaling. Here we show that a nonclassical nuclear import pathway via IPO3 (importin 3, transportin 2) mediates stress-induced NEMO nuclear translocation. We found putative nuclear localization signals in NEMO whose mutations disrupted stress-inducible nuclear translocation of NEMO and IKK/NF-κB activation in stably reconstituted NEMO-deficient cells. RNAi screening of both importin α and β family members, as well as co-immunoprecipitation analyses, revealed that a nonclassical importin β family member, IPO3, was the only importin that was able to associate with NEMO and whose reduced expression prevented genotoxic stress-induced NEMO nuclear translocation, IKK/NF-κB activation, and inflammatory cytokine transcription. Recombinant IPO3 interacted with recombinant NEMO but not the nuclear localization signal mutant version and induced nuclear import of NEMO in digitonin-permeabilized cells. We also provide evidence that NEMO is disengaged from IKK complex following genotoxic stress induction. Thus, the IPO3 nuclear import pathway is an early and crucial determinant of the IKK/NF-κB signaling arm of the mammalian DNA damage response.
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Affiliation(s)
- Byounghoon Hwang
- Department of Oncology, University of Wisconsin, Madison, Wisconsin
| | - Kevin McCool
- Department of Oncology, University of Wisconsin, Madison, Wisconsin; Molecular and Cellular Pharmacology Program, University of Wisconsin, Madison, Wisconsin
| | - Jun Wan
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Shelly M Wuerzberger-Davis
- Department of Oncology, University of Wisconsin, Madison, Wisconsin; University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, Wisconsin
| | - Edmond W K Young
- Department of Mechanical and Industrial Engineering and Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Eun Young Choi
- Department of Oncology, University of Wisconsin, Madison, Wisconsin
| | - Gino Cingolani
- Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
| | - Beth A Weaver
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin; University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, Wisconsin
| | - Shigeki Miyamoto
- Department of Oncology, University of Wisconsin, Madison, Wisconsin; University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, Wisconsin.
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600
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Scicluna BP, van Lieshout MH, Blok DC, Florquin S, van der Poll T. Modular Transcriptional Networks of the Host Pulmonary Response during Early and Late Pneumococcal Pneumonia. Mol Med 2015; 21:430-41. [PMID: 25998510 DOI: 10.2119/molmed.2014.00263] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 05/08/2015] [Indexed: 12/14/2022] Open
Abstract
Streptococcus pneumoniae (Spneu) remains the most lethal bacterial pathogen and the dominant agent of community-acquired pneumonia. Treatment has perennially focused on the use of antibiotics, albeit scrutinized due to the occurrence of antibiotic-resistant Spneu strains. Immunomodulatory strategies have emerged as potential treatment options. Although promising, immunomodulation can lead to improper tissue functions either at steady state or upon infectious challenge. This argues for the availability of tools to enable a detailed assessment of whole pulmonary functions during the course of infection, not only those functions biased to the defense response. Thus, through the use of an unbiased tissue microarray and bioinformatics approach, we aimed to construct a comprehensive map of whole-lung transcriptional activity and cellular pathways during the course of pneumococcal pneumonia. We performed genome-wide transcriptional analysis of whole lungs before and 6 and 48 h after Spneu infection in mice. The 4,000 most variable transcripts across all samples were used to assemble a gene coexpression network comprising 13 intercorrelating modules (clusters of genes). Fifty-four percent of this whole-lung transcriptional network was altered 6 and 48 h after Spneu infection. Canonical signaling pathway analysis uncovered known pathways imparting protection, including IL17A/IL17F signaling and previously undetected mechanisms that included lipid metabolism. Through in silico prediction of cell types, pathways were observed to enrich for distinct cell types such as a novel stromal cell lipid metabolism pathway. These cellular mechanisms were furthermore anchored at functional hub genes of cellular fate, differentiation, growth and transcription. Collectively, we provide a benchmark unsupervised map of whole-lung transcriptional relationships and cellular activity during early and late pneumococcal pneumonia.
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Affiliation(s)
- Brendon P Scicluna
- Center for Experimental Molecular Medicine and Center for Infection and Immunity Amsterdam
| | - Miriam H van Lieshout
- Center for Experimental Molecular Medicine and Center for Infection and Immunity Amsterdam
| | - Dana C Blok
- Center for Experimental Molecular Medicine and Center for Infection and Immunity Amsterdam
| | - Sandrine Florquin
- Department of Pathology, University of Amsterdam, Amsterdam, the Netherlands
| | - Tom van der Poll
- Center for Experimental Molecular Medicine and Center for Infection and Immunity Amsterdam.,Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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