1
|
Kervella D, Mesnard B, Prudhomme T, Bruneau S, Masset C, Cantarovich D, Blancho G, Branchereau J. Sterile Pancreas Inflammation during Preservation and after Transplantation. Int J Mol Sci 2023; 24:ijms24054636. [PMID: 36902067 PMCID: PMC10003374 DOI: 10.3390/ijms24054636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/23/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023] Open
Abstract
The pancreas is very susceptible to ischemia-reperfusion injury. Early graft losses due to pancreatitis and thrombosis represent a major issue after pancreas transplantation. Sterile inflammation during organ procurement (during brain death and ischemia-reperfusion) and after transplantation affects organ outcomes. Sterile inflammation of the pancreas linked to ischemia-reperfusion injury involves the activation of innate immune cell subsets such as macrophages and neutrophils, following tissue damage and release of damage-associated molecular patterns and pro-inflammatory cytokines. Macrophages and neutrophils favor tissue invasion by other immune cells, have deleterious effects or functions, and promote tissue fibrosis. However, some innate cell subsets may promote tissue repair. This outburst of sterile inflammation promotes adaptive immunity activation via antigen exposure and activation of antigen-presenting cells. Better controlling sterile inflammation during pancreas preservation and after transplantation is of utmost interest in order to decrease early allograft loss (in particular thrombosis) and increase long-term allograft survival. In this regard, perfusion techniques that are currently being implemented represent a promising tool to decrease global inflammation and modulate the immune response.
Collapse
Affiliation(s)
- Delphine Kervella
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Néphrologie et Immunologie Clinique, ITUN, F-44000 Nantes, France
- Correspondence:
| | - Benoît Mesnard
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Service d’Urologie, ITUN, F-44000 Nantes, France
| | - Thomas Prudhomme
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
| | - Sarah Bruneau
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
| | - Christophe Masset
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Néphrologie et Immunologie Clinique, ITUN, F-44000 Nantes, France
| | - Diego Cantarovich
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Néphrologie et Immunologie Clinique, ITUN, F-44000 Nantes, France
| | - Gilles Blancho
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Néphrologie et Immunologie Clinique, ITUN, F-44000 Nantes, France
| | - Julien Branchereau
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France
- Centre Hospitalier Universitaire de Nantes, Nantes Université, Service d’Urologie, ITUN, F-44000 Nantes, France
| |
Collapse
|
2
|
Alaluf E, Vokaer B, Detavernier A, Azouz A, Splittgerber M, Carrette A, Boon L, Libert F, Soares M, Le Moine A, Goriely S. Heme oxygenase-1 orchestrates the immunosuppressive program of tumor-associated macrophages. JCI Insight 2020; 5:133929. [PMID: 32369450 DOI: 10.1172/jci.insight.133929] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 04/30/2020] [Indexed: 12/19/2022] Open
Abstract
Tumor-associated macrophages (TAMs) contribute to the maintenance of a strong immunosuppressive environment, supporting tumor progression and resistance to treatment. To date, the mechanisms that drive acquisition of these immunosuppressive features are still poorly defined. Heme oxygenase-1 (HO-1) is the rate-limiting enzyme that catabolizes free heme. It displays important cytoprotective, antiinflammatory, and antioxidant properties. A growing body of evidence suggests that HO-1 may also promote tumor development. Herein, we show that HO-1 is highly expressed in monocytic cells in the tumor microenvironment (TME) once they differentiate into TAMs. Deletion of HO-1 in the myeloid compartment enhances the beneficial effects of a therapeutic antitumor vaccine by restoring CD8+ T cell proliferation and cytotoxicity. We further show that induction of HO-1 plays a major role in monocyte education by tumor cells by modulating their transcriptional and epigenetic programs. These results identify HO-1 as a valuable therapeutic target to reprogram the TME and synergize with current cancer therapies to facilitate antitumor response.
Collapse
Affiliation(s)
- Emmanuelle Alaluf
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | - Benoît Vokaer
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | - Aurélie Detavernier
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | - Abdulkader Azouz
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | - Marion Splittgerber
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | - Alice Carrette
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | | | - Frédérick Libert
- Université Libre de Bruxelles, BRIGHTcore ULB-VUB and Institute of Interdisciplinary Research in Human and Molecular Biology (IRIBHM), Brussels, Belgium
| | | | - Alain Le Moine
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| | - Stanislas Goriely
- Université Libre de Bruxelles, Institute for Medical Immunology, and ULB Center for Research in Immunology (U-CRI), Gosselies, Belgium
| |
Collapse
|
3
|
Bone marrow-derived mesenchymal stromal cells ameliorate severe acute pancreatitis in rats via hemeoxygenase-1-mediated anti-oxidant and anti-inflammatory effects. Cytotherapy 2018; 21:162-174. [PMID: 30600195 DOI: 10.1016/j.jcyt.2018.11.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 11/09/2018] [Accepted: 11/20/2018] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND AIMS It has been previously verified that mesenchymal stromal cells (MSCs) have a good therapeutic effect on severe acute pancreatitis (SAP) and the potential for regeneration of damaged pancreatic tissue, but the exact molecular mechanism remains unclear. In this study, we demonstrated the therapeutic effect of bone morrow MSCs (BMSCs) on SAP, probably by targeting heme oxygenase-1 (HO-1). METHODS Six hours after SAP induction, either phosphate-buffered saline (PBS) or BMSCs were transfused into the caudal vein of rats, zinc protoporphyrin (ZnPP) was administered intraperitoneally. Pancreatic pathological scoring, serum levels of amylase and inflammatory factors, as well as levels of reactive oxygen species (ROS), malondialdehyde (MDA) and myeloperoxidase (MPO), superoxide dismutase (SOD) and catalase (CAT) activity in the pancreas were evaluated. RESULTS Our data showed that BMSCs significantly reduce inflammation and oxidative stress, reduce apoptosis and promote angiogenesis of damaged pancreas. Moreover, BMSCs increased the level of HO-1 in the serum and pancreatic tissue in rats with SAP. In addition, the protective effect of BMSCs was partially neutralized by the HO-1 activity inhibitor ZnPP, suggesting a key role of HO-1 in the therapeutic effect of BMSCs on SAP. CONCLUSIONS BMSCs ameliorated SAP, probably by inducing expression of HO-1, which can exert anti-inflammatory and anti-oxidant effects, reduce apoptosis and promote angiogenesis.
Collapse
|
4
|
Romano M, Fanelli G, Tan N, Nova-Lamperti E, McGregor R, Lechler RI, Lombardi G, Scottà C. Expanded Regulatory T Cells Induce Alternatively Activated Monocytes With a Reduced Capacity to Expand T Helper-17 Cells. Front Immunol 2018; 9:1625. [PMID: 30079063 PMCID: PMC6062605 DOI: 10.3389/fimmu.2018.01625] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 07/02/2018] [Indexed: 12/29/2022] Open
Abstract
Regulatory T cells (Tregs) are essential in maintaining peripheral immunological tolerance by modulating several subsets of the immune system including monocytes. Under inflammatory conditions, monocytes migrate into the tissues, where they differentiate into dendritic cells or tissue-resident macrophages. As a result of their context-dependent plasticity, monocytes have been implicated in the development/progression of graft-vs-host disease (GvHD), autoimmune diseases and allograft rejection. In the last decade, Tregs have been exploited for their use in cell therapy with the aim to induce tolerance after solid organ transplantation and for the treatment of autoimmune diseases and GvHD. To date, safety and feasibility of Treg infusion has been demonstrated; however, many questions of how these cells induce tolerance have been raised and need to be answered. As monocytes constitute the major cellular component in inflamed tissues, we have developed an in vitro model to test how Tregs modulate their phenotype and function. We demonstrated that expanded Tregs can drive monocytes toward an alternatively activated state more efficiently than freshly isolated Tregs. The effect of expanded Tregs on monocytes led to a reduced production of pro-inflammatory cytokines (IL-6 and tumor necrosis factor-α) and NF-κB activation. Furthermore, monocytes co-cultured with expanded Tregs downregulated the expression of co-stimulatory and MHC-class II molecules with a concomitant upregulation of M2 macrophage specific markers, CD206, heme oxygenase-1, and increased interleukin-10 production. Importantly, monocytes co-cultured with expanded Tregs showed a reduced capacity to expand IL-17-producing T cells compared with monocyte cultured with freshly isolated Tregs and conventional T cells. The capacity to decrease the expansion of pro-inflammatory Th-17 was not cytokine mediated but the consequence of their lower expression of the co-stimulatory molecule CD86. Our data suggest that expanded Tregs have the capacity to induce phenotypical and functional changes in monocytes that might be crucial for tolerance induction in transplantation and the prevention/treatment of GvHD and autoimmune diseases.
Collapse
Affiliation(s)
- Marco Romano
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Giorgia Fanelli
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Nicole Tan
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Estefania Nova-Lamperti
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom.,Molecular and Translational Immunology Laboratory, Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, University of Concepcion, Concepcion, Chile
| | - Reuben McGregor
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Robert I Lechler
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Giovanna Lombardi
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| | - Cristiano Scottà
- Immunoregulation Laboratory, MRC Centre for Transplantation, School of Immunology & Microbial Sciences, King's College London, London, United Kingdom
| |
Collapse
|
5
|
Duff CE, Simmonds MJ. Genetic predictors of long-term graft function in kidney and pancreas transplant patients. Brief Funct Genomics 2017; 16:228-237. [PMID: 28110269 DOI: 10.1093/bfgp/elw039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Kidney and pancreas transplantation have helped transform the lives of people with end-stage renal failure and individuals with type 1 diabetes who have poor glycaemic control/severe secondary complications, respectively. Despite an improvement in immunosuppressive regimes, operative techniques and decreased initial rejection rates, there has been little improvement in long-term graft survival rates over the past decade. Whilst limited progress has been made in establishing clinical markers of graft function, several genetic markers of long-term graft function have been identified. These genetic markers have the potential to (i) assist in selecting marginal donor organs for transplantation, (ii) provide better understanding of the mechanisms behind graft loss enabling identification of new, or repurposing, current treatments to extend graft function and (iii) provide a window of opportunity to identify and treat individuals before graft failure has occurred. This review will discuss the different genetic variants screened for a role in predicting transplant longevity, examine their findings and limitations and introduce where the future of genetic research within the transplantation field lies.
Collapse
|
6
|
Wang JL, Chen Y, Song XQ, Lu ML, Zhao B, Ma L, Chen EZ, Mao EQ. Biliary tract external drainage protects against multiple organs injuries of severe acute pancreatitis rats via heme oxygenase-1 upregulation. Pancreatology 2017; 17:219-227. [PMID: 28209258 DOI: 10.1016/j.pan.2017.01.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 12/25/2016] [Accepted: 01/30/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To investigate the effect of biliary tract external drainage (BTED) on severe acute pancreatitis (SAP) in rats and the relationship with heme oxygenase-1 (HO-1) pathway. METHODS Thirty SD rats weighing 250-300 g were randomly assigned into five groups (n = 6): sham surgery (SS) group, SAP group, SAP + BTED group, SAP + zinc protoporphyrin IX (ZnPP) group, SAP + BTED + ZnPP group. The SAP model was induced via retrograde injection of 4% sodium taurocholate (1 mL/kg) into biliopancreatic duct through duodenal wall. BTED was performed by inserting a cannula into the bile duct of SAP rats. Tissue and blood samples were collected 24 h after surgery. Pathological changes in organs were scored. The level of amylase, alanine transaminase (ALT), aspartate aminotransferase (AST), diamine oxidase (DAO), lipopolysaccharide (LPS), myeloperoxidase (MPO) and ability to inhibit hydroxyl radical(·OH) in serum were measured. The expression of hemeoxygenase-1 (HO-1), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in tissues were analyzed by RT- PCR and western-blot. RESULTS Organs damage in SAP rats was significantly alleviated by BTED (p < 0.05). Compared to the SAP group, the serum level of amylase, ALT, AST, DAO, MPO, and LPS were significantly lower in the SAP + BTED group, and the ability to inhibit ·OH was significantly higher (p < 0.05). The BETD treatment led to a significant reduction of TNF-α, IL-6 level and a significant increase of HO-1 level in tissues than in SAP rats (p < 0.05). ZnPP significantly inhibited all above mentioned changes. CONCLUSIONS BTED protected multiple organs against SAP related injuries via HO-1 upregulation.
Collapse
Affiliation(s)
- Jin-Long Wang
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Ying Chen
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Xiao-Qing Song
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Mei-Ling Lu
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Bing Zhao
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Li Ma
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - Er-Zhen Chen
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| | - En-Qiang Mao
- Department of Emergency Intensive Care Unit, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China.
| |
Collapse
|
7
|
Yu M, Wang J, Fang Q, Liu P, Chen S, Zhe N, Lin X, Zhang Y, Zhao J, Zhou Z. High expression of heme oxygenase-1 in target organs may attenuate acute graft-versus-host disease through regulation of immune balance of TH17/Treg. Transpl Immunol 2016; 37:10-17. [PMID: 27168057 DOI: 10.1016/j.trim.2016.05.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 05/02/2016] [Accepted: 05/03/2016] [Indexed: 12/31/2022]
Abstract
The high incidence of acute graft-versus-host disease (aGVHD) is a serious complication of allogeneic hematopoietic stem cell transplantation (allo-HSCT). Grades III and IV aGVHD are the leading causes of death in allo-HSCT recipients. Heme oxygenase-1(HO-1) has anti-inflammatory and immune-regulatory functions. In this study, we evaluated the none GVHD and grade I-IV patients samples which were collected at the first re-examination after successful allo-HSCT, we found that expressions of HO-1 mRNA in the bone marrow and peripheral blood mononuclear cells of allo-HSCT recipients who had subsequent non-GVHD and grade I aGVHD were significantly higher than those in patients with Grade III-IV aGVHD. We then demonstrated that enhanced expression of HO-1 in target organs by infusing HO-1-gene-modified Mesenchymal stem cells (MSCs) alleviated the clinical and histopathological severity of aGVHD in experimental mice. Flow cytometry revealed a higher expression of Treg cells and a lower expression of TH17 cells in splenic and lymph node tissues of mice with enhanced HO-1 expression, as compared to that in the aGVHD mice. This was further substantiated by lower expression levels of ROR-Υt and IL-17A mRNA, and higher levels of Foxp3 mRNA in the splenic tissue of mice with enhanced HO-1 expression. Our results indicate that high expression of HO-1 may reduce the severity of aGVHD by regulation of the TH17/Treg balance.
Collapse
Affiliation(s)
- Meisheng Yu
- Graduate School, Guizhou Medical University, PR China
| | - Jishi Wang
- Guizhou Province Laboratory of Hematopoietic Stem Cell Transplantation Centre, PR China; Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, PR China.
| | - Qin Fang
- Department of Pharmacy, Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang, Guizhou 550058, PR China
| | - Ping Liu
- Graduate School, Guizhou Medical University, PR China
| | - Shuya Chen
- Graduate School, Guizhou Medical University, PR China
| | - Nana Zhe
- Graduate School, Guizhou Medical University, PR China
| | - Xiaojing Lin
- Graduate School, Guizhou Medical University, PR China
| | - Yaming Zhang
- Guizhou Province Laboratory of Hematopoietic Stem Cell Transplantation Centre, PR China
| | - Jiangyuan Zhao
- Guizhou Province Laboratory of Hematopoietic Stem Cell Transplantation Centre, PR China
| | - Zhen Zhou
- Department of Pharmacy, Affiliated Baiyun Hospital of Guizhou Medical University, Guiyang, Guizhou 550058, PR China
| |
Collapse
|
8
|
Zhao H, Ozen M, Wong RJ, Stevenson DK. Heme oxygenase-1 in pregnancy and cancer: similarities in cellular invasion, cytoprotection, angiogenesis, and immunomodulation. Front Pharmacol 2015; 5:295. [PMID: 25642189 PMCID: PMC4294126 DOI: 10.3389/fphar.2014.00295] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 12/18/2014] [Indexed: 01/28/2023] Open
Abstract
Pregnancy can be defined as a “permissible” process, where a semi-allogeneic fetus and placenta are allowed to grow and survive within the mother. Similarly, in tumor growth, antigen-specific malignant cells proliferate and evade into normal tissues of the host. The microenvironments of the placenta and tumors are amazingly comparable, sharing similar mechanisms exploited by fetal or cancer cells with regard to surviving in a hypoxic microenvironment, invading tissues via degradation and vasculogenesis, and escaping host attack through immune privilege. Heme oxygease-1 (HO-1) is a stress-response protein that has antioxidative, anti-apoptotic, pro-angiogenic, and anti-inflammatory properties. Although a large volume of research has been published in recent years investigating the possible role(s) of HO-1 in pregnancy and in cancer development, the molecular mechanisms that regulate these “yin-yang” processes have still not been fully elucidated. Here, we summarize and compare pregnancy and cancer development, focusing primarily on the function of HO-1 in cellular invasion, cytoprotection, angiogenesis, and immunomodulation. Due to the similarities of both processes, a thorough understanding of the molecular mechanisms of each process may reveal and guide the development of new approaches to prevent not only pregnancy disorders; but also, to study cancer.
Collapse
Affiliation(s)
- Hui Zhao
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine Stanford, CA, USA
| | - Maide Ozen
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine Stanford, CA, USA
| | - Ronald J Wong
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine Stanford, CA, USA
| | - David K Stevenson
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine Stanford, CA, USA
| |
Collapse
|
9
|
Schumacher A, Zenclussen AC. Effects of heme oxygenase-1 on innate and adaptive immune responses promoting pregnancy success and allograft tolerance. Front Pharmacol 2015; 5:288. [PMID: 25610397 PMCID: PMC4285018 DOI: 10.3389/fphar.2014.00288] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 12/10/2014] [Indexed: 12/14/2022] Open
Abstract
The heme-degrading enzyme heme oxygenase-1 (HO-1) has cytoprotective, antioxidant, and anti-inflammatory properties. Moreover, HO-1 is reportedly involved in suppressing destructive immune responses associated with inflammation, autoimmune diseases, and allograft rejection. During pregnancy, maternal tolerance to foreign fetal antigens is a prerequisite for successful embryo implantation and fetal development. Here, HO-1 has been implicated in counteracting the overwhelming inflammatory immune responses towards fetal allo-antigens, thereby contributing to fetal acceptance. Accordingly, HO-1 ablation negatively impacts the critical steps of pregnancy such as fertilization, implantation, placentation, and fetal growth. In the present review, we summarize recent data on the immune modulatory capacity of HO-1 towards allo-antigens expressed by the semi-allogeneic fetus and organ allografts. In this regard, HO-1 has been shown to promote alloantigen tolerance by blocking dendritic cell maturation resulting in reduced T cell responses and increased numbers of regulatory T cells. Moreover, HO-1 is suggested to shift the uterine cytokine milieu towards a protective Th2 profile and protects fetal tissue from apoptosis by upregulating anti-apoptotic molecules. Thus, HO-1 is not only a pivotal regulator of the initial steps of pregnancy; but also, an important player in supporting the maternal immune system in tolerating the fetus.
Collapse
Affiliation(s)
- Anne Schumacher
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University Magdeburg, Germany
| | - Ana C Zenclussen
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University Magdeburg, Germany
| |
Collapse
|
10
|
Protective Effect of Adenoviral Transfer of Heme Oxygenase-1 Gene on Rats With Severe Acute Pancreatitis. Am J Med Sci 2014; 348:224-31. [PMID: 24694788 DOI: 10.1097/maj.0000000000000225] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
11
|
Piotrowski J, Jedrzejewski T, Kozak W. Heme oxygenase-1 induction by cobalt protoporphyrin enhances fever and inhibits pyrogenic tolerance to lipopolysaccharide. J Therm Biol 2014; 45:69-74. [PMID: 25436953 DOI: 10.1016/j.jtherbio.2014.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 07/07/2014] [Accepted: 08/14/2014] [Indexed: 10/24/2022]
Abstract
Heme oxygenase-1 (HO-1) is an enzyme that catalyzes degradation of the heme and regulates its availability for newly synthetized hemeproteins such as cyclooxygenases, NO synthases and cytochrome P450. Moreover, HO-1 activity modulates synthesis of cytokines and prostaglandins. All of these factors are well-defined components of fever and pyrogenic tolerance mechanisms. We examine the effect of HO-1 induction and activation using cobalt protoporphyrin (CoPP) on changes in body temperature (Tb), plasma levels of interleukin-6 (IL-6), prostaglandin E₂ (PGE₂) and HO-1 protein in the course of these processes. Intraperitoneally (i.p.) pre-treatment of rats with CoPP (5 mg kg(-1)) significantly accelerated and enhanced the early stage of lipopolysaccharide (LPS)-induced fever and shortened a post-fever recovery to normal temperature. Pre-treatment with CoPP significantly potentiated the increase in plasma IL-6, PGE₂ and HO-1 levels measured 4h after the LPS administration. Furthermore, induction of HO-1 attenuated the development of pyrogenic tolerance to repeated injections of LPS. Based on these data we conclude that heme oxygenase-1 may act as a physiological regulator of the febrile response intensity to bacterial infections.
Collapse
Affiliation(s)
- Jakub Piotrowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Wilenska 4 Street, Torun 87-100, Poland; Department of Immunology, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, 1 Lwowska Street, Torun 87-100, Poland.
| | - Tomasz Jedrzejewski
- Department of Immunology, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, 1 Lwowska Street, Torun 87-100, Poland.
| | - Wieslaw Kozak
- Department of Immunology, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, 1 Lwowska Street, Torun 87-100, Poland.
| |
Collapse
|
12
|
The differential tissue expression of inflammatory, oxidative stress, and apoptosis markers in human uncontrolled non-heart-beating donors. Transplantation 2013; 95:1346-53. [PMID: 23542474 DOI: 10.1097/tp.0b013e31828ee151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Uncontrolled non-heart-beating donor (UNHBD) transplantation offers a major opportunity to ameliorate the effects of the donor shortage. However, little is known about the true status of the organs obtained from these donors. UNHBD transplantation is performed under unfavorable conditions and involves exposure to several harmful stimuli that have been identified as triggers for immediate inflammatory response, oxidative stress, and apoptotic phenomena. This adverse scenario could explain the higher rates of graft dysfunction due to primary nonfunction traditionally observed in NHBD. Our aim was to assess the expression of proinflammatory, oxidative, and apoptotic markers in liver, lung, and pancreas tissue samples obtained from UNHBD and to compare these expression levels with those observed in brain-dead donors (BDD). METHODS Samples from human type 2 NHBD and BDD were obtained at the end of cold storage. Interleukin (IL)-1β, tumor necrosis factor-α, IL-6, IL-10, endothelial nitric oxide synthase, inducible nitric oxide synthase, type 1 heme oxygenase, type 2 heme oxygenase, Bax, and Bcl-2 protein and mRNA expression, as well as catalase, glutathione peroxidase, and glutathione reductase tissue activity, were determined. RESULTS UNHBD showed similar or lower expression of proinflammatory mediators and apoptosis markers in all three organs without modifications to the anti-inflammatory cytokines. Although the major oxidative stress marker levels were also comparable in both types of donors, the type 1 heme oxygenase mRNA expression and antioxidant enzyme activity were slightly diminished in UNHBD. CONCLUSIONS The initial tissue damage generated during the UNHB donation process is at least comparable with that observed in BDD. However, although the expression of the immediate immune response and apoptosis markers is similar, a mild impairment of the local antioxidant activity was observed.
Collapse
|
13
|
Weis S, Jesinghaus M, Kovacs P, Schleinitz D, Schober R, Ruffert C, Herms M, Wittenburg H, Stumvoll M, Blüher M, Grützmann R, Schulz HU, Keim V, Mössner J, Bugert P, Witt H, Drenth JPH, Krohn K, Rosendahl J. Genetic analyses of heme oxygenase 1 (HMOX1) in different forms of pancreatitis. PLoS One 2012; 7:e37981. [PMID: 22666428 PMCID: PMC3364204 DOI: 10.1371/journal.pone.0037981] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 05/01/2012] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Heme oxygenase 1 (HMOX1) is the rate limiting enzyme in heme degradation and a key regulator of inflammatory processes. In animal models the course of pancreatitis was ameliorated by up-regulation of HMOX1 expression. Additionally, carbon monoxide released during heme breakdown inhibited proliferation of pancreatic stellate cells and might thereby prevent the development of chronic pancreatitis (CP). Transcription of HMOX1 in humans is influenced by a GT-repeat located in the promoter. As such, HMOX1 variants might be of importance in the pathogenesis of pancreatitis. METHODS The GT-repeat and SNP rs2071746 were investigated with fluorescence labelled primers and by melting curve analysis in 285 patients with acute pancreatitis, 208 patients with alcoholic CP, 207 patients with idiopathic/hereditary CP, 147 patients with alcoholic liver cirrhosis, and in 289 controls, respectively. GT-repeat analysis was extended to a total of 446 alcoholic CP patients. In addition, we performed DNA sequencing in 145 patients with alcoholic CP, 138 patients with idiopathic/hereditary CP, 147 patients with alcoholic liver cirrhosis, and 151 controls. Exon 3 screening was extended to additional patients and controls. RESULTS S- and L-alleles of the GT-repeat, genotypes and alleles of SNP rs2071746 and non-synonymous variants detected by sequencing were found with similar frequencies in all groups. CONCLUSIONS Although functional data implicate a potential influence of HMOX1 variants on the pathogenesis of pancreatitis, we did not find any association. As rare non-synonymous HMOX1 variants were found in patients and controls, it is rather unlikely that they will have functional consequences essential for pancreatitis development.
Collapse
Affiliation(s)
- Sebastian Weis
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Moritz Jesinghaus
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Peter Kovacs
- Department of Internal Medicine, Neurology and Dermatology, Division of Endocrinology, University of Leipzig, Leipzig, Germany
| | - Dorit Schleinitz
- Department of Internal Medicine, Neurology and Dermatology, Division of Endocrinology, University of Leipzig, Leipzig, Germany
| | - Robert Schober
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Claudia Ruffert
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Max Herms
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Henning Wittenburg
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Michael Stumvoll
- Department of Internal Medicine, Neurology and Dermatology, Division of Endocrinology, University of Leipzig, Leipzig, Germany
- IFB Adiposity Diseases, University of Leipzig, Leipzig, Germany
| | - Matthias Blüher
- Department of Internal Medicine, Neurology and Dermatology, Division of Endocrinology, University of Leipzig, Leipzig, Germany
- IFB Adiposity Diseases, University of Leipzig, Leipzig, Germany
| | - Robert Grützmann
- Department of General, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Hans-Ulrich Schulz
- Department of Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Volker Keim
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Joachim Mössner
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
| | - Peter Bugert
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Red Cross Blood Service of Baden-Württemberg-Hessen, Mannheim, Germany
| | - Heiko Witt
- Department of Pediatrics, Else Kröner-Fresenius-Zentrum für Ernährungsmedizin (EKFZ) & Zentralinstitut für Ernährungs- und Lebensmittelforschung (ZIEL); Technische Universität München, Munich, Germany
| | - Joost P. H. Drenth
- Department of Gastroenterology and Hepatology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Knut Krohn
- Interdisciplinary Centre for Clinical Research Leipzig, Core-Unit DNA Technologies, University of Leipzig, Leipzig, Germany
| | - Jonas Rosendahl
- Department of Internal Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Leipzig, Germany
- * E-mail:
| |
Collapse
|
14
|
Blancou P, Tardif V, Simon T, Rémy S, Carreño L, Kalergis A, Anegon I. Immunoregulatory properties of heme oxygenase-1. Methods Mol Biol 2011; 677:247-268. [PMID: 20941616 DOI: 10.1007/978-1-60761-869-0_18] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Heme oxygenase-1 (HO-1) is one of the three isoforms of the heme oxygenase enzyme that catabolyzes the degradation of heme into biliverdin with the production of free iron and CO. HO-1 is induced by its substrate and by other stimuli, including agents involved in oxidative stress and proinflammatory cytokines as well as several anti-inflammatory stimuli. A growing body of evidence points toward the capacity of this molecule to inhibit immune reactions and the pivotal role of HO-1 in inflammatory diseases. We will first review the physiological role of HO-1 as determined by the analysis of HO-1-deficient individuals. This will be followed by an examination of the effect of HO-1 within immunopathological contexts such as immune disorders (autoimmunity and allergy) or infections. A section will be devoted to the use of an HO-1 inducer as an immunosuppressive molecule in transplantation. Finally, we will review the molecular basis of HO-1 actions on different immune cells.
Collapse
|
15
|
Habtezion A, Kwan R, Yang AL, Morgan ME, Akhtar E, Wanaski SP, Collins SD, Butcher EC, Kamal A, Omary MB. Heme oxygenase-1 is induced in peripheral blood mononuclear cells of patients with acute pancreatitis: a potential therapeutic target. Am J Physiol Gastrointest Liver Physiol 2011; 300:G12-20. [PMID: 20966033 PMCID: PMC3025514 DOI: 10.1152/ajpgi.00231.2010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Heme oxygenase-1 (HO-1) induction by hemin or Panhematin protects against experimental pancreatitis. As a preclinical first step toward determining whether HO-1 upregulation is a viable target in acute pancreatitis (AP) patients, we tested the hypothesis that HO-1 expression in peripheral blood mononuclear cell (PBMC) subsets of hospitalized patients with mild AP is upregulated then normalizes upon recovery and that cells from AP patients have the potential to upregulate their HO-1 ex vivo if exposed to Panhematin. PBMCs were isolated on days 1 and 3 of hospitalization from the blood of 18 AP patients, and PMBC HO-1 levels were compared with PMBCs of 15 hospitalized controls (HC) and 7 volunteer healthy controls (VC). On day 1 of hospitalization, AP patients compared with VCs had higher HO-1 expression in monocytes and neutrophils. Notably, AP monocyte HO-1 levels decreased significantly upon recovery. Panhematin induced HO-1 in ex vivo cultured AP PBMCs more readily than in HC or VC PBMCs. Furthermore, PBMCs from acutely ill AP patients on day 1 were more responsive to HO-1 induction compared with day 3 upon recovery. Similarly, mouse splenocytes had enhanced HO-1 inducibility as their pancreatitis progressed from mild to severe. In conclusion, AP leads to reversible PBMC HO-1 upregulation that is associated with clinical improvement and involves primarily monocytes. Leukocytes from AP patients or mice with AP are primed for HO-1 induction by Panhematin, which suggests that Panhematin could offer a therapeutic benefit.
Collapse
Affiliation(s)
- Aida Habtezion
- Stanford Univ. School of Medicine, Dept. of Medicine, Division of Gastroenterology & Hepatology, 300 Pasteur Dr., Stanford, CA 94305, USA.
| | - Raymond Kwan
- 1University of Michigan Medical School, Department of Molecular and Integrative Physiology, Ann Arbor, Michigan;
| | - Alice L. Yang
- 2Stanford University School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, Stanford, California;
| | - Maureen E. Morgan
- 2Stanford University School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, Stanford, California;
| | - Ehsaan Akhtar
- 2Stanford University School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, Stanford, California;
| | | | | | - Eugene C. Butcher
- 4Stanford University School of Medicine, Department of Pathology, Stanford, California; and
| | - Ahmad Kamal
- 2Stanford University School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, Stanford, California; ,5Division of Gastroenterology and Hepatology, Department of Medicine, Santa Clara Valley Medical Center, San Jose, California
| | - M. Bishr Omary
- 1University of Michigan Medical School, Department of Molecular and Integrative Physiology, Ann Arbor, Michigan;
| |
Collapse
|
16
|
Yun N, Eum HA, Lee SM. Protective role of heme oxygenase-1 against liver damage caused by hepatic ischemia and reperfusion in rats. Antioxid Redox Signal 2010; 13:1503-12. [PMID: 20446775 DOI: 10.1089/ars.2009.2873] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This study investigated the time course of heme oxygenase (HO)-1 expression and the role of endogenous HO-1 in hepatic ischemia and reperfusion (I/R). Rats were pretreated with hemin, an HO-1 inducer, and zinc protoporphyrin (ZnPP), an HO-1 inhibitor. Hepatic HO activity increased at 1 h after reperfusion, reaching a maximum at 6 h after reperfusion and then declined. HO-1 mRNA and protein expression in I/R liver were upregulated prior to reperfusion and highly induced again by reperfusion. The ALT level was upregulated at all time points, with a peak at 4-6 h. This increase was augmented by ZnPP but attenuated by hemin. Lipid peroxidation and serum HMGB1 release significantly increased at 1 h after reperfusion and remained elevated throughout the 24 h of reperfusion period, whereas the glutathione content decreased markedly at 4-6 h after reperfusion. These changes were attenuated by hemin but augmented by ZnPP. The levels of serum TNF-α, iNOS, and COX-2 protein and mRNA expressions were upregulated after reperfusion, further enhanced by ZnPP, and suppressed by hemin. HO-1 overexpression protects the liver against I/R injury by modulating oxidative stress and proinflammatory mediators.
Collapse
Affiliation(s)
- Nari Yun
- School of Pharmacy, Sungkyunkwan University , Suwon-si, South Korea
| | | | | |
Collapse
|
17
|
Hershberger RC, Bornak A, Aulivola B, Mannava K. Acute Pancreatitis after Percutaneous Mechanical Thrombectomy: Case Report and Review of the Literature. Cardiovasc Intervent Radiol 2010; 34 Suppl 2:S25-30. [DOI: 10.1007/s00270-010-0027-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 10/20/2010] [Indexed: 11/28/2022]
|
18
|
Abstract
Heme oxygenase-1 (HO-1) is the rate-limiting enzyme in heme catabolism that converts heme to Fe++, carbon monoxide and biliverdin. HO-1 acts anti-inflammatory and modulates apoptosis in many pathological conditions. In transplantation, HO-1 is overexpressed in organs during brain death, when undergoing ischemic damage and rejection. However, intentionally induced, it ameliorates pathological processes like ischemia reperfusion injury, allograft, xenograft or islet rejection, facilitates donor specific tolerance and alleviates chronic allograft changes. We herein consistently summarize the huge amount of data on HO-1 and transplantation that have been generated in multiple laboratories during the last 15years and suggest possible clinical implications and applications for the near future.
Collapse
Affiliation(s)
- Robert Öllinger
- Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.
| | | |
Collapse
|
19
|
Vijayan V, Mueller S, Baumgart-Vogt E, Immenschuh S. Heme oxygenase-1 as a therapeutic target in inflammatory disorders of the gastrointestinal tract. World J Gastroenterol 2010; 16:3112-9. [PMID: 20593496 PMCID: PMC2896748 DOI: 10.3748/wjg.v16.i25.3112] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Heme oxygenase (HO)-1 is the inducible isoform of the first and rate-limiting enzyme of heme degradation. HO-1 not only protects against oxidative stress and apoptosis, but has received a great deal of attention in recent years because of its potent anti-inflammatory functions. Studies with HO-1 knockout animal models have led to major advances in the understanding of how HO-1 might regulate inflammatory immune responses, although little is known on the underlying mechanisms. Due to its beneficial effects the targeted induction of this enzyme is considered to have major therapeutic potential for the treatment of inflammatory disorders. This review discusses current knowledge on the mechanisms that mediate anti-inflammatory protection by HO-1. More specifically, the article deals with the role of HO-1 in the pathophysiology of viral hepatitis, inflammatory bowel disease, and pancreatitis. The effects of specific HO-1 modulation as a potential therapeutic strategy in experimental cell culture and animal models of these gastrointestinal disorders are summarized. In conclusion, targeted regulation of HO-1 holds major promise for future clinical interventions in inflammatory diseases of the gastrointestinal tract.
Collapse
|
20
|
Lacraz G, Giroix MH, Kassis N, Coulaud J, Galinier A, Noll C, Cornut M, Schmidlin F, Paul JL, Janel N, Irminger JC, Kergoat M, Portha B, Donath MY, Ehses JA, Homo-Delarche F. Islet endothelial activation and oxidative stress gene expression is reduced by IL-1Ra treatment in the type 2 diabetic GK rat. PLoS One 2009; 4:e6963. [PMID: 19742300 PMCID: PMC2737103 DOI: 10.1371/journal.pone.0006963] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Accepted: 08/03/2009] [Indexed: 02/07/2023] Open
Abstract
Background Inflammation followed by fibrosis is a component of islet dysfunction in both rodent and human type 2 diabetes. Because islet inflammation may originate from endothelial cells, we assessed the expression of selected genes involved in endothelial cell activation in islets from a spontaneous model of type 2 diabetes, the Goto-Kakizaki (GK) rat. We also examined islet endotheliuml/oxidative stress (OS)/inflammation-related gene expression, islet vascularization and fibrosis after treatment with the interleukin-1 (IL-1) receptor antagonist (IL-1Ra). Methodology/Principal Findings Gene expression was analyzed by quantitative RT-PCR on islets isolated from 10-week-old diabetic GK and control Wistar rats. Furthermore, GK rats were treated s.c twice daily with IL-1Ra (Kineret, Amgen, 100 mg/kg/day) or saline, from 4 weeks of age onwards (onset of diabetes). Four weeks later, islet gene analysis and pancreas immunochemistry were performed. Thirty-two genes were selected encoding molecules involved in endothelial cell activation, particularly fibrinolysis, vascular tone, OS, angiogenesis and also inflammation. All genes except those encoding angiotensinogen and epoxide hydrolase (that were decreased), and 12-lipoxygenase and vascular endothelial growth factor (that showed no change), were significantly up-regulated in GK islets. After IL-1Ra treatment of GK rats in vivo, most selected genes implied in endothelium/OS/immune cells/fibrosis were significantly down-regulated. IL-1Ra also improved islet vascularization, reduced fibrosis and ameliorated glycemia. Conclusions/Significance GK rat islets have increased mRNA expression of markers of early islet endothelial cell activation, possibly triggered by several metabolic factors, and also some defense mechanisms. The beneficial effect of IL-1Ra on most islet endothelial/OS/immune cells/fibrosis parameters analyzed highlights a major endothelial-related role for IL-1 in GK islet alterations. Thus, metabolically-altered islet endothelium might affect the β-cell microenvironment and contribute to progressive type 2 diabetic β-cell dysfunction in GK rats. Counteracting islet endothelial cell inflammation might be one way to ameliorate/prevent β-cell dysfunction in type 2 diabetes.
Collapse
Affiliation(s)
- Grégory Lacraz
- Laboratory of Biology & Pathology of Endocrine Pancreas, Functional and Adaptive Biology Unit-CNRS EA 7059, University Paris-Diderot, Paris, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
|
22
|
Pae HO, Chung HT. Heme oxygenase-1: its therapeutic roles in inflammatory diseases. Immune Netw 2009; 9:12-9. [PMID: 20107533 PMCID: PMC2803295 DOI: 10.4110/in.2009.9.1.12] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Accepted: 01/26/2009] [Indexed: 01/05/2023] Open
Abstract
Heme oxygenase (HO)-1 is an inducible enzyme that catalyzes the first and rate-limiting step in the oxidative degradation of free heme into ferrous iron, carbon monoxide (CO), and biliverdin (BV), the latter being subsequently converted into bilirubin (BR). HO-1, once expressed during inflammation, forms high concentrations of its enzymatic by-products that can influence various biological events, and this expression is proven to be associated with the resolution of inflammation. The degradation of heme by HO-1 itself, the signaling actions of CO, the antioxidant properties of BV/BR, and the sequestration of ferrous iron by ferritin all concertedly contribute to the anti-inflammatory effects of HO-1. This review focuses on the anti-inflammatory mechanisms of HO-1 actions and its roles in inflammatory diseases.
Collapse
Affiliation(s)
- Hyun-Ock Pae
- Department of Microbiology and Immunology, Wonkwang University School of Medicine, Iksan, Korea
| | | |
Collapse
|