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Weng SC, Wen MC, Hsieh SL, Chen NJ, Tarng DC. Decoy Receptor 3 Suppresses T-Cell Priming and Promotes Apoptosis of Effector T-Cells in Acute Cell-Mediated Rejection: The Role of Reverse Signaling. Front Immunol 2022; 13:879648. [PMID: 35720343 PMCID: PMC9201909 DOI: 10.3389/fimmu.2022.879648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022] Open
Abstract
Background Decoy receptor 3 (DcR3) belongs to the tumor necrosis factor (TNF) receptor superfamily and neutralizes TNF ligands, including FasL and TRAIL, to prevent T activation during T-cell priming. However, the cellular mechanisms underlying acute cell-mediated rejection (ACMR) remain unknown. Methods We generated DcR3 transgenic (Tg) mice and mice with high DcR3 expression (HDE) to study both in vivo and in vitro. FasR RNA knockdown in immortalized CD4+CD8+ T-cells was used to survey the role of DcR3 on FasR/Fas-associated protein with death domain (FADD)/caspase 8 pathway and its cross-link to TNF receptor-associated factor 1 (TNFR1)-associated death domain protein (TRADD) in suppressing TNFR1. TNF/TRADD knockout mice were used to show the importance of TNF adaptor protein. Results DcR3.Fc suppressed C57BL/6 female T-cell activation and transformation into CD4+CD69+, CD4+CD44+, and CD4+CD25+Foxp3+ when compared with isotype IgG1 and its co-treatment with FasL/TRAIL after exposing to bone marrow-derived dendritic cells (BMDCs) that carried alloantigen with male H-Y and minor antigenic determinant. Interleukin-17 and interferon-γ productions by BMDC-activated T-cells were lowered after co-treating with DcR3.Fc. DcR3.Fc induced effector T-cells (Teffs) and was susceptible to FasR-mediated apoptosis through the FADD/TRADD/caspase 8 pathway. After exposing to DcR3.Fc, TRADD was silenced, likely turning down the inflammatory response. The systemic effects of DcR3 Tg mice and HDE phenotype induced by the promoter of cytomegalovirus not only attenuated ACMR severity but also ameliorated the high serum creatinine and blood urea nitrogen levels even with high T-cell exposure frequencies. Besides this, DcR3 has minor biological effects on both MHC-matched and MHC-mismatched models. Conclusions High DcR3 doses protect renal tubular epithelial cells from acute T-cell attack during the T-cell priming stage via interfering with TNF ligand-mediated reverse signaling and possibly promoting Teff apoptosis through FasR upregulation. Our findings supported that the decoy receptor is involved in T-cell modulation in kidney transplant rejection.
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Affiliation(s)
- Shuo-Chun Weng
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, Taiwan.,Institute of Clinical Medicine, School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Center for Geriatrics and Gerontology, Division of Nephrology, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Mei-Chin Wen
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Pathology and Laboratory Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shie-Liang Hsieh
- Institute of Clinical Medicine, School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan.,Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Clinical Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Nien-Jung Chen
- Institute of Microbiology and Immunology, College of Life Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Inflammation and Immunity Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Der-Cherng Tarng
- Institute of Clinical Medicine, School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department and Institute of Physiology, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Center for Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
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2
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Iasella CJ, Hoji A, Popescu I, Wei J, Snyder ME, Zhang Y, Xu W, Iouchmanov V, Koshy R, Brown M, Fung M, Langelier C, Lendermon EA, Dugger D, Shah R, Lee J, Johnson B, Golden J, Leard LE, Kleinhenz ME, Kilaru S, Hays SR, Singer JP, Sanchez PG, Morrell MR, Pilewski JM, Greenland JR, Chen K, McDyer JF. Type-1 immunity and endogenous immune regulators predominate in the airway transcriptome during chronic lung allograft dysfunction. Am J Transplant 2021; 21:2145-2160. [PMID: 33078555 PMCID: PMC8607839 DOI: 10.1111/ajt.16360] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 01/25/2023]
Abstract
Chronic lung allograft dysfunction (CLAD) remains the major complication limiting long-term survival among lung transplant recipients (LTRs). Limited understanding of CLAD immunopathogenesis and a paucity of biomarkers remain substantial barriers for earlier detection and therapeutic interventions for CLAD. We hypothesized the airway transcriptome would reflect key immunologic changes in disease. We compared airway brush-derived transcriptomic signatures in CLAD (n = 24) versus non-CLAD (n = 21) LTRs. A targeted assessment of the proteome using concomitant bronchoalveolar lavage (BAL) fluid for 24 cytokines/chemokines and alloimmune T cell responses was performed to validate the airway transcriptome. We observed an airway transcriptomic signature of differential genes expressed (DGEs) in CLAD marked by Type-1 immunity and striking upregulation of two endogenous immune regulators: indoleamine 2, 3 dioxygenase 1 (IDO-1) and tumor necrosis factor receptor superfamily 6B (TNFRSF6B). Advanced CLAD staging was associated with a more intense airway transcriptome signature. In a validation cohort using the identified signature, we found an area under the curve (AUC) of 0.77 for CLAD LTRs. Targeted proteomic analyses revealed a predominant Type-1 profile with detection of IFN-γ, TNF-α, and IL-1β as dominant CLAD cytokines, correlating with the airway transcriptome. The airway transcriptome provides novel insights into CLAD immunopathogenesis and biomarkers that may impact diagnosis of CLAD.
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Affiliation(s)
- Carlo J. Iasella
- Department of Pharmacy and Therapeutics, University of
Pittsburgh School of Pharmacy, Pittsburgh, Pennsylvania
| | - Aki Hoji
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Iulia Popescu
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Jianxin Wei
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Mark E. Snyder
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Yingze Zhang
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Wei Xu
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Vera Iouchmanov
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Ritchie Koshy
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Mark Brown
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Monica Fung
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Charles Langelier
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Elizabeth A. Lendermon
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Daniel Dugger
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Rupal Shah
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Joyce Lee
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Bruce Johnson
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Jeffrey Golden
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Lorriana E. Leard
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Mary Ellen Kleinhenz
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Silpa Kilaru
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Steven R. Hays
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Jonathan P. Singer
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Pablo G. Sanchez
- Department of Cardiothoracic Surgery, University of
Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Matthew R. Morrell
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - Joseph M. Pilewski
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - John R. Greenland
- Division of Pulmonary, Critical Care, Allergy and Sleep
Medicine, University of California San Francisco, San Francisco, California
| | - Kong Chen
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
| | - John F. McDyer
- Division of Pulmonary, Allergy, and Critical Care Medicine,
Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh,
Pennsylvania
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3
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Patry M, Teinturier R, Goehrig D, Zetu C, Ripoche D, Kim IS, Bertolino P, Hennino A. βig-h3 Represses T-Cell Activation in Type 1 Diabetes. Diabetes 2015; 64:4212-9. [PMID: 26470788 DOI: 10.2337/db15-0638] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 10/07/2015] [Indexed: 11/13/2022]
Abstract
βig-h3/TGF-βi is a secreted protein capable of binding to both extracellular matrix and cells. Human genetic studies recently revealed that in the tgfbi gene encoding for βig-h3, three single nucleotide polymorphisms were significantly associated with type 1 diabetes (T1D) risk. Pancreatic islets express βig-h3 in physiological conditions, but this expression is reduced in β-cell insult in T1D. Since the integrity of islets is destroyed by autoimmune T lymphocytes, we thought to investigate the impact of βig-h3 on T-cell activation. We show here that βig-h3 inhibits T-cell activation markers as well as cytotoxic molecule production as granzyme B and IFN-γ. Furthermore, βig-h3 inhibits early T-cell receptor signaling by repressing the activation of the early kinase protein Lck. Moreover, βig-h3-treated T cells are unable to induce T1D upon transfer in Rag2 knockout mice. Our study demonstrates for the first time that T-cell activation is modulated by βig-h3, an islet extracellular protein, in order to efficiently avoid autoimmune response.
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MESH Headings
- Animals
- Autoimmunity/drug effects
- Biomarkers/metabolism
- Cadaver
- Cells, Cultured
- Diabetes Mellitus, Type 1/drug therapy
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/immunology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Extracellular Matrix Proteins/genetics
- Extracellular Matrix Proteins/metabolism
- Extracellular Matrix Proteins/pharmacology
- Female
- Humans
- Hypoglycemic Agents/metabolism
- Hypoglycemic Agents/pharmacology
- Lymph Nodes/pathology
- Lymphocyte Activation/drug effects
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/antagonists & inhibitors
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/metabolism
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Knockout
- Protein Kinase Inhibitors/metabolism
- Protein Kinase Inhibitors/pharmacology
- Receptors, Antigen, T-Cell/antagonists & inhibitors
- Receptors, Antigen, T-Cell/metabolism
- Recombinant Proteins/metabolism
- Recombinant Proteins/pharmacology
- Recombinant Proteins/therapeutic use
- Signal Transduction/drug effects
- Specific Pathogen-Free Organisms
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/pathology
- Transforming Growth Factor beta/genetics
- Transforming Growth Factor beta/metabolism
- Transforming Growth Factor beta/pharmacology
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Affiliation(s)
- Maeva Patry
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Romain Teinturier
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Delphine Goehrig
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Cornelia Zetu
- National Institute of Diabetes, Nutrition and Metabolic Diseases "N. Paulescu," Bucharest, Romania
| | - Doriane Ripoche
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - In-San Kim
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Korea KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Korea
| | - Philippe Bertolino
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Ana Hennino
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
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4
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Vrabelova D, Adin CA, Kenzig A, Gilor C, Xu F, Buss JL, Rajab A. Evaluation of a high-yield technique for pancreatic islet isolation from deceased canine donors. Domest Anim Endocrinol 2014; 47:119-26. [PMID: 23428563 DOI: 10.1016/j.domaniend.2013.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 01/29/2013] [Accepted: 01/29/2013] [Indexed: 01/04/2023]
Abstract
Type 1 diabetes mellitus is one of the most frequently diagnosed endocrinopathies in dogs, and prevalence continues to increase. Pancreatic islet transplantation is a noninvasive and potentially curative treatment for type 1 diabetes mellitus. Institution of this treatment in dogs will require a readily available source of canine islets. We hypothesized that clinically acceptable islet yield and purity could be achieved by using deceased canine donors and standard centrifugation equipment. Pancreata were procured from dogs euthanized for reasons unrelated to this study. Initial anatomic studies were performed to evaluate efficacy of pancreatic perfusion. Infusion into the accessory pancreatic duct resulted in perfusion of approximately 75% of the pancreas. Additional cannulation of the distal right limb of the pancreas allowed complete perfusion. Collagenase digestion was performed with a Ricordi chamber and temperature-controlled perfusion circuit. Islets were separated from the exocrine tissue with the use of a discontinuous density gradient and a standard laboratory centrifuge. After isolation, islet yield was calculated and viability was assessed with dual fluorescent staining techniques. Islet isolation was completed in 6 dogs. Median (interquartile range) islet yield was 36,756 (28,527) islet equivalents per pancreas. A high degree of islet purity (percentage of endocrine tissue; 87.5% [10%]) and viability (87.4% [12.4%]) were achieved. The islet yield achieved with this technique would require approximately 1 pancreas per 5 kg body weight of the recipient dog. Purity and viability of the isolated islets were comparable with those achieved in human islet transplantation program. According to initial results, clinically relevant islet yield and quality can be obtained from deceased canine donors with the use of standard laboratory equipment.
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Affiliation(s)
- D Vrabelova
- Department of Veterinary Clinical Sciences and Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - C A Adin
- Department of Veterinary Clinical Sciences and Surgery, The Ohio State University, Columbus, OH 43210, USA.
| | - A Kenzig
- Department of Veterinary Clinical Sciences and Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - C Gilor
- Department of Veterinary Clinical Sciences and Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - F Xu
- Department of Veterinary Clinical Sciences and Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - J L Buss
- Department of Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - A Rajab
- Department of Surgery, The Ohio State University, Columbus, OH 43210, USA
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5
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Machida T, Tanemura M, Ohmura Y, Tanida T, Wada H, Kobayashi S, Marubashi S, Eguchi H, Ito T, Nagano H, Mori M, Doki Y, Sawa Y. Significant improvement in islet yield and survival with modified ET-Kyoto solution: ET-Kyoto/Neutrophil elastase inhibitor. Cell Transplant 2012; 22:159-73. [PMID: 22472201 DOI: 10.3727/096368912x637028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Although islet transplantation can achieve insulin independence in patients with type 1 diabetes, sufficient number of islets derived from two or more donors is usually required to achieve normoglycemia. Activated neutrophils and neutrophil elastase (NE), which is released from these neutrophils, can directly cause injury in islet grafts. We hypothesized that inhibition of NE improves islet isolation and islet allograft survival. We tested our hypothesis by examining the effects of modified ET-Kyoto solution supplemented with sivelestat, a NE inhibitor (S-Kyoto solution), on islet yield and viability in islet isolation and the effect of intraperitoneally injected sivelestat on islet graft survival in a mouse allotransplant model. NE and proinflammatory cytokines such as tumor necrosis factor (TNF)-α and interleukin (IL)-6 increased markedly at the end of warm digestion during islet isolation and exhibited direct cytotoxic activity against the islets causing their apoptosis. The use of S-Kyoto solution significantly improved islet yield and viability. Furthermore, treatment with sivelestat resulted in significant prolongation of islet allograft survival in recipient mice. Furthermore, serum levels of IL-6 and TNF-α at 1 and 2 weeks posttransplantation were significantly higher in islet recipients than before transplantation. Our results indicated that NE released from activated neutrophils negatively affects islet survival and that its suppression both in vitro and in vivo improved islet yield and prolonged islet graft survival. The results suggest that inhibition of NE activity could be potentially useful in islet transplantation for patients with type 1 diabetes mellitus.
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Affiliation(s)
- Tomohiko Machida
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
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6
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Han B, Qi S, Hu B, Luo H, Wu J. TGF-beta i promotes islet beta-cell function and regeneration. THE JOURNAL OF IMMUNOLOGY 2011; 186:5833-44. [PMID: 21471441 DOI: 10.4049/jimmunol.1002303] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
TGF-βi is a secreted protein and is capable of binding to both extracellular matrix (ECM) and cells. It thus acts as a bifunctional molecule enhancing ECM and cell interactions, a lack of which results in dysfunction of many cell types. In this study, we investigated the role of TGF-βi in the function and survival of islets. Based on DNA microarray followed by quantitative PCR confirmation, TGFβi gene showed drastic increase in expression in islets after culture. We demonstrated that recombinant TGF-βi could preserve the integrity and enhance the function of cultured islets. Such a beneficial effect was mediated via signaling through FAK. Exogenous TGF-βi was capable of sustaining high-level FAK phosphorylation in isolated islets, and FAK knockdown by small interfering RNA in islets resulted in compromised islet function. TGF-βi transgenic (Tg) islets showed better integrity and insulin release after in vitro culture. In vivo, β-cell proliferation was detectable in Tg but not wild-type pancreata. At age above 12 mo, Tg pancreata contained giant islets. Tg mice displayed better glucose tolerance than that of the controls. Tg islets were more potent in lowering blood glucose when transplanted into syngeneic mice with streptozotocin-induced diabetes, and these transplanted islets also underwent regeneration. Our results indicate that TGF-βi is a vital trophic factor promoting islet survival, function, and regeneration. At least some of its beneficial effect was mediated by signaling through FAK.
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Affiliation(s)
- Bing Han
- Laboratoire Immunologie, Centre de Recherche, Centre Hospitalier de l'Université de Montréal-Hôpital Notre-Dame, Montréal, Quebec H2L 4M1, Canada
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7
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Decoy receptor 3 protects non-obese diabetic mice from autoimmune diabetes by regulating dendritic cell maturation and function. Mol Immunol 2010; 47:2552-62. [DOI: 10.1016/j.molimm.2010.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 07/04/2010] [Accepted: 07/05/2010] [Indexed: 12/31/2022]
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8
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Yamada A, Ishimaru N, Arakaki R, Katunuma N, Hayashi Y. Cathepsin L inhibition prevents murine autoimmune diabetes via suppression of CD8(+) T cell activity. PLoS One 2010; 5:e12894. [PMID: 20877570 PMCID: PMC2943924 DOI: 10.1371/journal.pone.0012894] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Accepted: 08/31/2010] [Indexed: 01/07/2023] Open
Abstract
Background Type 1 diabetes (T1D) is an autoimmune disease resulting from defects in central and peripheral tolerance and characterized by T cell-mediated destruction of islet β cells. To determine whether specific lysosomal proteases might influence the outcome of a T cell–mediated autoimmune response, we examined the functional significance of cathepsin inhibition on autoimmune T1D-prone non-obese diabetic (NOD) mice. Methods and Findings Here it was found that specific inhibition of cathepsin L affords strong protection from cyclophosphamide (CY)-induced insulitis and diabetes of NOD mice at the advanced stage of CD8+ T cell infiltration via inhibiting granzyme activity. It was discovered that cathepsin L inhibition prevents cytotoxic activity of CD8+ T cells in the pancreatic islets through controlling dipeptidyl peptidase I activity. Moreover, the gene targeting for cathepsin L with application of in vivo siRNA administration successfully prevented CY-induced diabetes of NOD mice. Finally, cathepsin L mRNA expression of peripheral CD8+ T cells from NOD mice developing spontaneous T1D was significantly increased compared with that from control mice. Conclusions Our results identified a novel function of cathepsin L as an enzyme whose activity is essential for the progression of CD8+ T cell-mediated autoimmune diabetes, and inhibition of cathepsin L as a powerful therapeutic strategy for autoimmune diabetes.
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Affiliation(s)
- Akiko Yamada
- Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Naozumi Ishimaru
- Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Rieko Arakaki
- Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Nobuhiko Katunuma
- Institute of Health Science, Tokushima Bunri University, Tokushima, Japan
| | - Yoshio Hayashi
- Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
- * E-mail:
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9
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Zmuda EJ, Viapiano M, Grey ST, Hadley G, Garcia-Ocaña A, Hai T. Deficiency of Atf3, an adaptive-response gene, protects islets and ameliorates inflammation in a syngeneic mouse transplantation model. Diabetologia 2010; 53:1438-50. [PMID: 20349223 PMCID: PMC2877761 DOI: 10.1007/s00125-010-1696-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Accepted: 01/04/2010] [Indexed: 12/27/2022]
Abstract
AIMS/HYPOTHESIS Islet transplantation is a potential therapeutic option for type 1 diabetes. However, the need for multiple donors per patient and heavy immunosuppression of the recipients limit its use. The goal of this study was to test whether the gene encoding activating transcription factor 3 (ATF3), a stress-inducible pro-apoptotic gene, plays a role in graft rejection in islet transplantation. METHODS We compared wild-type (WT) and Atf3 knockout (KO) islets in vitro using stress paradigms relevant to islet transplantation: isolation, inflammation and hypoxia. We also compared the WT and KO islets in vivo using a syngeneic mouse transplantation model. RESULTS ATF3 was induced in all three stress paradigms and played a deleterious role in islet survival, as evidenced by the lower viability of WT islets compared with KO islets. ATF3 upregulated various downstream target genes in a stress-dependent manner. These target genes can be classified into two functional groups: (1) apoptosis (Noxa [also known as Pmaip1] and Bnip3), and (2) immunomodulation (Tnfalpha [also known as Tnf], Il-1beta [also known as Il1b], Il-6 [also known as Il6] and Ccl2 [also known as Mcp-1]). In vivo, Atf3 KO islets performed better than WT islets after transplantation, as evidenced by better glucose homeostasis in the recipients and the reduction of the following variables in the KO grafts: caspase 3 activation, macrophage infiltration and expression of the above apoptotic and immunomodulatory genes. CONCLUSIONS/INTERPRETATION ATF3 plays a role in islet graft rejection by contributing to islet cell death and inflammatory responses at the graft sites. Silencing the ATF3 gene may provide therapeutic benefits in islet transplantation.
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Affiliation(s)
- E. J. Zmuda
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, OH 43210, USA
- Department of Molecular and Cellular Biochemistry, Ohio State University, Columbus, OH 43210, USA
- Center for Molecular Neurobiology, Ohio State University, Columbus, OH 43210, USA
| | - M. Viapiano
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, OH 43210, USA
- Center for Molecular Neurobiology, Ohio State University, Columbus, OH 43210, USA
- Department of Neurological Surgery, Ohio State University, Columbus, OH 43210, USA
| | - S. T. Grey
- Gene Therapy and Autoimmunity Group, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia
| | - G. Hadley
- Department of Surgery, Ohio State University, Columbus, OH 43210, USA
| | - A. Garcia-Ocaña
- Department of Medicine, Division of Endocrinology and Metabolism, and Department of Cell Biology and Physiology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - T. Hai
- Molecular, Cellular and Developmental Biology Program, Ohio State University, Columbus, OH 43210, USA
- Department of Molecular and Cellular Biochemistry, Ohio State University, Columbus, OH 43210, USA
- Center for Molecular Neurobiology, Ohio State University, Columbus, OH 43210, USA
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10
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Han B, Wu J. DcR3 Protects Islet β Cells from Apoptosis through Modulating Adcyap1 and Bank1 Expression. THE JOURNAL OF IMMUNOLOGY 2009; 183:8157-66. [DOI: 10.4049/jimmunol.0901165] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Huang H, Xie Q, Kang M, Zhang B, Zhang H, Chen J, Zhai C, Yang D, Jiang B, Wu Y. Labeling transplanted mice islet with polyvinylpyrrolidone coated superparamagnetic iron oxide nanoparticles for in vivo detection by magnetic resonance imaging. NANOTECHNOLOGY 2009; 20:365101. [PMID: 19687538 DOI: 10.1088/0957-4484/20/36/365101] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Superparamagnetic iron oxide nanoparticles (SPIO) are emerging as a novel probe for noninvasive cell tracking with magnetic resonance imaging (MRI) and have potential wide usage in medical research. In this study, we have developed a method using high-temperature hydrolysis of chelate metal alkoxide complexes to synthesize polyvinylpyrrolidone coated iron oxide nanoparticles (PVP-SPIO), as a biocompatible magnetic agent that can efficiently label mice islet beta-cells. The size, crystal structure and magnetic properties of the as-synthesized nanoparticles have been characterized. The newly synthesized PVP-SPIO with high stability, crystallinity and saturation magnetization can be efficiently internalized into beta-cells, without affecting viability and function. The imaging of 100 PVP-SPIO-labeled mice islets in the syngeneic renal subcapsular model of transplantation under a clinical 3.0 T MR imager showed high spatial resolution in vivo. These results indicated the great potential application of the PVP-SPIO as an MRI contrast agent for monitoring transplanted islet grafts in the clinical management of diabetes in the near future.
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Affiliation(s)
- Hai Huang
- Department of Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China
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12
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Mao J, Luo H, Han B, Bertrand R, Wu J. Drak2 is upstream of p70S6 kinase: its implication in cytokine-induced islet apoptosis, diabetes, and islet transplantation. THE JOURNAL OF IMMUNOLOGY 2009; 182:4762-70. [PMID: 19342653 DOI: 10.4049/jimmunol.0802255] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Drak2 is a member of the death-associated protein family and a serine threonine kinase. In this study, we investigated its role in beta cell survival and diabetes. Drak2 mRNA and protein were rapidly induced in islet beta cells after stimulation by inflammatory lymphokines known to be present in type 1 diabetes. Drak2 up-regulation was accompanied by increased beta cell apoptosis. beta cell apoptosis caused by the said stimuli was inhibited by Drak2 knockdown using small interfering RNA. Conversely, transgenic Drak2 overexpression led to aggravated beta cell apoptosis triggered by the stimuli. Further in vivo experiments demonstrated that Drak2 transgenic islets were more vulnerable to streptozocin insult. We established that inducible NO synthase was upstream and caspase-9 was downstream of Drak2 in its signaling pathway. Purified Drak2 could phosphorylate ribosomal protein S6 (p70S6) kinase in an in vitro kinase assay. Drak2 overexpression in NIT-1 cells led to enhanced p70S6 kinase phosphorylation, whereas Drak2 knockdown in these cells reduced it. These mechanistic studies proved that p70S6 kinase was a bona fide Drak2 substrate.
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Affiliation(s)
- Jianning Mao
- Laboratory of Immunology, Notre Dame Hospital, Montreal, Quebec, Canada
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13
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Xie QP, Huang H, Xu B, Dong X, Gao SL, Zhang B, Wu YL. Human bone marrow mesenchymal stem cells differentiate into insulin-producing cells upon microenvironmental manipulation in vitro. Differentiation 2009; 77:483-91. [PMID: 19505629 DOI: 10.1016/j.diff.2009.01.001] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2008] [Revised: 12/12/2008] [Accepted: 01/12/2009] [Indexed: 01/09/2023]
Abstract
It was recently reported that pluripotent mesenchymal stem cells (MSCs) in rodent bone marrow (BM) have the capacity to generate insulin-producing cells (IPCs) in vitro. However, little is known about this capacity in human BM-MSCs. We developed a nongenetic method to induce human BM-MSCs to transdifferentiate into IPCs both phenotypically and functionally. BM-MSCs from 12 human donors were sequentially cultured in specially defined conditions. Their differentiation extent toward beta-cell phenotype was evaluated systemically. Specifically, after induction human BM-MSCs formed spheroid islet-like clusters containing IPCs, which was further confirmed by dithizone (DTZ) staining and electron microscopy. These IPCs expressed multiple genes related to the development or function of pancreatic beta cells (including NKX6.1, ISL-1, Beta2/Neurod, Glut2, Pax6, nestin, PDX-1, ngn3, insulin and glucagon). The coexpression of insulin and c-peptide was observed in IPCs by immunofluorescence. Moreover, they were able to release insulin in a glucose-dependent manner and ameliorate the diabetic conditions of streptozotocin (STZ)-treated nude mice. These results indicate that human BM-MSCs might be an available candidate to overcome limitations of islet transplantation.
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Affiliation(s)
- Qiu-Ping Xie
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou, Zhejiang province 310009, PR China
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14
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Mao J, Luo H, Wu J. Drak2 overexpression results in increased beta-cell apoptosis after free fatty acid stimulation. J Cell Biochem 2009; 105:1073-80. [PMID: 18777517 DOI: 10.1002/jcb.21910] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Drak2 is a serine threonine kinase in the death-associated protein family. In this study, we investigated its role in free fatty acid (FFA)-induced islet apoptosis. Drak2 mRNA and protein were rapidly induced in islet beta-cells after FFA stimulation. Such Drak2 upregulation was accompanied by increased beta-cell apoptosis, which was inhibited by Drak2 knockdown using siRNA. Conversely, transgenic (Tg) Drak2 overexpression led to aggravated beta-cell apoptosis triggered by FFA. Drak2 overexpression in islets compromised the increase of anti-apoptotic factors, such as Bcl-2, Bcl-xL and Flip, upon FFA assault. Further in vivo experiments demonstrated that Drak2 Tg mice presented compromised glucose tolerance in a diet-induced obesity model. Our data show that Drak2 is detrimental to islet survival in the presence of excessive lipid.
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Affiliation(s)
- Jianning Mao
- Laboratory of Immunology, Centre Hospitalier de l'Université de Montréal (CHUM), Notre Dame Hospital, Montreal, Quebec, Canada
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15
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Han B, Bojalil R, Amezcua-Guerra LM, Springall R, Valderrama-Carvajal H, Wu J, Luo H. DcR3 as a diagnostic parameter and risk factor for systemic lupus erythematosus. Int Immunol 2008; 20:1067-75. [PMID: 18562337 DOI: 10.1093/intimm/dxn064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In this study, we investigated the diagnostic value of serum death decoy receptor 3 (DcR3) for systemic lupus erythematosus (SLE). The possible pathogenic role of DcR3 in SLE was also assessed. Serum DcR3 levels of 90 SLE patients, 11 patients with rheumatic conditions and 123 healthy controls were determined by ELISA. In all, 43% of the SLE patients, 9% of patients with rheumatic conditions and 2.4% of the normal healthy individuals presented elevated serum DcR3 levels. A higher percentage of DcR3-positive SLE patients, compared with DcR3-negative SLE patients, showed abnormally high serum IgE levels, a surrogate marker of T(h)2-type immune responses. To determine the cause and effect relationship of DcR3 expression and a T(h)2-prone status, we studied young DcR3 transgenic (Tg) mice, whose transgene was driven by an actin promoter. These mice had IL-4 overproduction and augmented serum IgE levels, signs of dominant T(h)2 immune responses. To determine possible SLE pathogenic roles of DcR3, the T-cell-depleted bone marrow of DcR3 Tg mice was transplanted into lethally irradiated syngeneic C57BL/6 female mice. The recipients developed an SLE-like syndrome. They presented anti-dsDNA and anti-nuclear antibodies, along with renal and liver pathology compatible with that of SLE. In total, 90% of Tg bone marrow-transplanted mice, compared with 20% of wild-type bone marrow-transplanted mice, perished within 12 months after the transplantation. Our results showed that serum DcR3 could serve as an additional parameter for SLE diagnosis and that DcR3 secreted from cells of hematopoietic origin was SLE pathogenic in mice.
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Affiliation(s)
- Bing Han
- Laboratory of Immunology, Research Centre, Centre hospitalier de l'Université de Montréal, Notre-Dame Hospital, Pavilion DeSève, Montreal, Quebec H2L 4M1, Canada
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16
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Han B, Moore PA, Wu J, Luo H. Overexpression of human decoy receptor 3 in mice results in a systemic lupus erythematosus-like syndrome. ACTA ACUST UNITED AC 2007; 56:3748-58. [PMID: 17968950 DOI: 10.1002/art.22978] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Decoy receptor 3 (DcR3), a tumor necrosis factor receptor family member, is a secreted protein that can enhance cell survival by interfering with multiple apoptosis pathways. This study was undertaken to investigate the role of DcR3 in the pathogenesis of autoimmune disease. METHODS We generated transgenic mice with actin promoter-driven expression of human DcR3 and investigated the development of autoimmune disease in these mice. RESULTS T cell immune responses were compromised in young DcR3-transgenic mice. Beyond 5-6 months of age, transgenic mice developed a systemic lupus erythematosus (SLE)-like syndrome, with numerous features of the disease. They produced autoantibodies against double-stranded DNA. Their kidneys showed pathologic changes indicative of glomerular nephritis and IgG and C3 deposition, and proteinuria, leukocyturia, and hematuria, were evident. Aged transgenic mice also developed skin lesions and lymphocyte infiltration in the liver, and exhibited leukopenia, anemia, and thrombocytopenia. The SLE-like syndrome penetrance in DcR3-transgenic mice was sex associated, occurring in approximately 60% of females versus 20% of males. Exogenous recombinant DcR3 or endogenous DcR3 produced by transgenic T cells effectively protected T cells against activation-induced apoptosis in vitro. Probably as a consequence of this, CD4 cells with a phenotype of previous activation were increased in the peripheral blood of transgenic mice beyond 6 months of age. CONCLUSION These results show that DcR3 overexpression could lead to an SLE-like syndrome in mice.
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Affiliation(s)
- Bing Han
- Centre hospitalier de l'Université de Montréal, Notre-Dame Hospital, Montréal, Quebec, Canada
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17
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Hanley S, Liu S, Lipsett M, Castellarin M, Rosenberg L, Tchervenkov J, Paraskevas S. Tumor necrosis factor-alpha production by human islets leads to postisolation cell death. Transplantation 2006; 82:813-8. [PMID: 17006329 DOI: 10.1097/01.tp.0000234787.05789.23] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recent successes in islet transplantation highlight the importance of islet isolation by experienced centers and minimization of cell injury as crucial to the achievement of insulin independence. Islet injury may manifest as cell death by apoptosis, shorter graft survival, and the need for retransplantation. Although an inflammatory cytokine response at the graft site is known to inhibit engraftment, recent evidence indicates that islet cells may contribute to this response. METHODS Isolated human islets were cultured for up to one week in serum-free CMRL-1066 with 25 microM of tumor necrosis factor (TNF)alpha inhibitor RDP58. Gene expression was measured by reverse transcriptase polymerase chain reaction, apoptosis and TNFalpha secretion by enzyme-linked immunosorbent assay and enzyme-linked immunospot, and islet function by stimulated insulin secretion. RESULTS Isolation induced a twofold increase in TNFalpha expression between days one and three (P<0.05), while TNFalpha secretion peaked at day one. RDP58 reduced TNFalpha secretion by 70.6% (P<0.02), though TNFalpha gene expression was unaffected. RDP58 reduced the frequency of TNFalpha-secreting islets by 64.4% (P<0.05) and reduced apoptotic levels by 26.4% within 24 hr postisolation (P<0.05). The reduction in apoptosis was maintained throughout the week (P<0.01), while apoptosis increased in control cultures. Finally, RDP58-treated islets displayed increased insulin secretion in response to both elevated glucose (1915.0+/-396.6 vs. 825.3+/-261.1 mU/L, P<0.01) and secretagogues (2294.3+/-529.5 vs. 939.8+/-333.7 mU/L, P<0.02). CONCLUSIONS These data demonstrate that intraislet cytokine production should be considered as a factor leading to islet cell death postisolation and postengraftment, and strategies aimed at countering islet cytokine production represent a novel target for improving islet viability and function.
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Affiliation(s)
- Stephen Hanley
- Department of Surgery, McGill University, Montréal, Québec, Canada
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18
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Shen HW, Gao SL, Wu YL, Peng SY. Overexpression of decoy receptor 3 in hepatocellular carcinoma and its association with resistance to Fas ligand-mediated apoptosis. World J Gastroenterol 2005; 11:5926-30. [PMID: 16273601 PMCID: PMC4436712 DOI: 10.3748/wjg.v11.i38.5926] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To characterize the expression and genomic amplification of decoy receptor 3 (DcR3) in hepatocellular carcinoma (HCC) and to evaluate the role of DcR3 in apoptosis.
METHODS: We examined 48 cases of HCC for DcR3 expression by RT-PCR and DcR3 gene amplification by quantitative genomic PCR. DcR3 protein was detected by immunohistochemistry. Terminal deoxynucleotidyl transferase-mediated dUTP digoxigenin nick and labeling (TUNEL) was used to identify the apoptosis cells in tissues. Primary hepatoma cell culture and MTT test were used to evaluate the protection against FasL- and chemical-induced apoptosis by DcR3 expression.
RESULTS: DcR3 mRNA overexpression was detected in 60% HCC (29/48) patients. The occurrence of HCC was not associated with amplification of the gene. One sample base substitution was found in three sites as a sequence in Genbank. The expression of DcR3 in HCC was associated with the apoptotic index (0.067±0.04 vs 0.209±0.12, P<0.01), size of mass, stage, and infiltration or metastasis (41.2% vs 71.0%, 40% vs 75%, 51.8% vs 84.6%, P<0.05). DcR3 expression could protect hepatoma cells against apoptosis induced by FasL, but not by chemicals.
CONCLUSION: These data suggest that in addition to gene amplification there may be another mechanism underlying DcR3 overexpression. The effect of overexpression of DcR3 on the apoptosis of cancer cells may have direct therapeutic implications for the management of HCC.
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MESH Headings
- Apoptosis/drug effects
- Base Sequence
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Fas Ligand Protein
- Gene Amplification
- Gene Expression
- Humans
- In Vitro Techniques
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Membrane Glycoproteins/pharmacology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Receptors, Tumor Necrosis Factor/genetics
- Receptors, Tumor Necrosis Factor/metabolism
- Receptors, Tumor Necrosis Factor, Member 6b
- Tumor Necrosis Factors/pharmacology
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Affiliation(s)
- Hong-Wei Shen
- Department of Surgery, 2(nd) Affiliated Hospital of Medical College, Zhejiang University, Hangzhou 310009, Zhejiang Province, China.
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19
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Mysore TB, Shinkel TA, Collins J, Salvaris EJ, Fisicaro N, Murray-Segal LJ, Johnson LEA, Lepore DA, Walters SN, Stokes R, Chandra AP, O'Connell PJ, d'Apice AJF, Cowan PJ. Overexpression of glutathione peroxidase with two isoforms of superoxide dismutase protects mouse islets from oxidative injury and improves islet graft function. Diabetes 2005; 54:2109-16. [PMID: 15983212 DOI: 10.2337/diabetes.54.7.2109] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Primary nonfunction of transplanted islets results in part from their sensitivity to reactive oxygen species (ROS) generated during the isolation and transplantation process. Our aim was to examine whether coexpression of antioxidant enzymes to detoxify multiple ROS increased the resistance of mouse islets to oxidative stress and improved the initial function of islet grafts. Islets from transgenic mice expressing combinations of human copper/zinc superoxide dismutase (SOD), extracellular SOD, and cellular glutathione peroxidase (Gpx-1) were subjected to oxidative stress in vitro. Relative viability after hypoxanthine/xanthine oxidase treatment was as follows: extracellular SOD + Gpx-1 + Cu/Zn SOD > extracellular SOD + Gpx-1 > extracellular SOD > wild type. Expression of all three enzymes was the only combination protective against hypoxia/reoxygenation. Islets from transgenic or control wild-type mice were then transplanted into streptozotocin-induced diabetic recipients in a syngeneic marginal islet mass model, and blood glucose levels were monitored for 7 days. In contrast to single- and double-transgenic grafts, triple-transgenic grafts significantly improved control of blood glucose compared with wild type. Our results indicate that coexpression of antioxidant enzymes has a complementary beneficial effect and may be a useful approach to reduce primary nonfunction of islet grafts.
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Affiliation(s)
- Tharun B Mysore
- Immunology Research Centre, St. Vincent's Hospital Melbourne, P.O. Box 2900, Fitzroy 3065, Victoria, Australia
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20
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Bottino R, Balamurugan AN, Tse H, Thirunavukkarasu C, Ge X, Profozich J, Milton M, Ziegenfuss A, Trucco M, Piganelli JD. Response of human islets to isolation stress and the effect of antioxidant treatment. Diabetes 2004; 53:2559-68. [PMID: 15448084 DOI: 10.2337/diabetes.53.10.2559] [Citation(s) in RCA: 220] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The process of human islet isolation triggers a cascade of stressful events in the islets of Langerhans involving activation of apoptosis and necrosis and the production of proinflammatory molecules that negatively influence islet yield and function and may produce detrimental effects after islet transplantation. In this study, we showed that activation of nuclear factor-kappaB (NF-kappaB) and poly(ADP-ribose) polymerase (PARP), two of the major pathways responsible for cellular responses to stress, already occurs in pancreatic cells during the isolation procedure. NF-kappaB-dependent reactions, such as production and release of interleukin-6 and -8 and macrophage chemoattractant protein 1, were observed days after the isolation procedure in isolated purified islets. Under culture conditions specially designed to mimic isolation stress, islet proinflammatory responses were even more pronounced and correlated with higher islet cell loss and impaired secretory function. Here we present novel evidence that early interventions aimed at reducing oxidative stress of pancreatic cells and islets through the use of the catalytic antioxidant probe AEOL10150 (manganese [III] 5,10,15,20-tetrakis [1,3,-diethyl-2imidazoyl] manganese-porphyrin pentachloride [TDE-2,5-IP]) effectively reduces NF-kappaB binding to DNA, the release of cytokines and chemokines, and PARP activation in islet cells, resulting in higher survival and better insulin release. These findings support the concept that the isolation process predisposes islets to subsequent damage and functional impairment. Blocking oxidative stress can be beneficial in reducing islet vulnerability and can potentially have a significant impact on transplantation outcome.
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Affiliation(s)
- Rita Bottino
- Department of Pediatrics, University of Pittsburgh, School of Medicine, Pennsylvania, USA
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21
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Sung HH, Juang JH, Lin YC, Kuo CH, Hung JT, Chen A, Chang DM, Chang SY, Hsieh SL, Sytwu HK. Transgenic expression of decoy receptor 3 protects islets from spontaneous and chemical-induced autoimmune destruction in nonobese diabetic mice. ACTA ACUST UNITED AC 2004; 199:1143-51. [PMID: 15078896 PMCID: PMC2211895 DOI: 10.1084/jem.20031939] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Decoy receptor 3 (DCR3) halts both Fas ligand– and LIGHT-induced cell deaths, which are required for pancreatic β cell damage in autoimmune diabetes. To directly investigate the therapeutic potential of DCR3 in preventing this disease, we generated transgenic nonobese diabetic mice, which overexpressed DCR3 in β cells. Transgenic DCR3 protected mice from autoimmune and cyclophosphamide-induced diabetes in a dose-dependent manner and significantly reduced the severity of insulitis. Local expression of the transgene did not alter the diabetogenic properties of systemic lymphocytes or the development of T helper 1 or T regulatory cells. The transgenic islets had a higher transplantation success rate and survived for longer than wild-type islets. We have demonstrated for the first time that the immune-evasion function of DCR3 inhibits autoimmunity and that genetic manipulation of grafts may improve the success and survival of islet transplants.
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MESH Headings
- Animals
- Base Sequence
- DNA Primers/genetics
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/prevention & control
- Female
- Gene Expression
- Graft Survival
- Islets of Langerhans/immunology
- Islets of Langerhans/pathology
- Islets of Langerhans Transplantation
- Male
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/physiology
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Mice, Transgenic
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/physiology
- Receptors, Tumor Necrosis Factor
- Receptors, Tumor Necrosis Factor, Member 6b
- Th1 Cells/immunology
- Th2 Cells/immunology
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Affiliation(s)
- Hsiang-Hsuan Sung
- Graduate Institute of Life Sciences, National Defense Medical Center, MinChuan East Road, Neihu, Taipei, Taiwan
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