1
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Stroope C, Nettersheim FS, Coon B, Finney AC, Schwartz MA, Ley K, Rom O, Yurdagul A. Dysregulated cellular metabolism in atherosclerosis: mediators and therapeutic opportunities. Nat Metab 2024; 6:617-638. [PMID: 38532071 PMCID: PMC11055680 DOI: 10.1038/s42255-024-01015-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 02/20/2024] [Indexed: 03/28/2024]
Abstract
Accumulating evidence over the past decades has revealed an intricate relationship between dysregulation of cellular metabolism and the progression of atherosclerotic cardiovascular disease. However, an integrated understanding of dysregulated cellular metabolism in atherosclerotic cardiovascular disease and its potential value as a therapeutic target is missing. In this Review, we (1) summarize recent advances concerning the role of metabolic dysregulation during atherosclerosis progression in lesional cells, including endothelial cells, vascular smooth muscle cells, macrophages and T cells; (2) explore the complexity of metabolic cross-talk between these lesional cells; (3) highlight emerging technologies that promise to illuminate unknown aspects of metabolism in atherosclerosis; and (4) suggest strategies for targeting these underexplored metabolic alterations to mitigate atherosclerosis progression and stabilize rupture-prone atheromas with a potential new generation of cardiovascular therapeutics.
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Affiliation(s)
- Chad Stroope
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Felix Sebastian Nettersheim
- La Jolla Institute for Immunology, La Jolla, CA, USA
- Department of Cardiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Brian Coon
- Yale Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
- Cardiovascular Biology Research Program, OMRF, Oklahoma City, OK, USA
- Department of Cell Biology, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
| | - Alexandra C Finney
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Martin A Schwartz
- Yale Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
- Departments of Cell Biology and Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Klaus Ley
- La Jolla Institute for Immunology, La Jolla, CA, USA
- Department of Bioengineering, University of California, San Diego, San Diego, CA, USA
- Immunology Center of Georgia (IMMCG), Augusta University Immunology Center of Georgia, Augusta, GA, USA
| | - Oren Rom
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Arif Yurdagul
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA.
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA.
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2
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Yang J, Cai R, Xun J, Zhang R, Liu L, Shen Y, Qi T, Wang Z, Song W, Tang Y, Sun J, Xu S, Zhao B, Lu H, Chen J. Elevated indoleamine 2,3-dioxygenase activity is associated with endothelial dysfunction in people living with HIV and ROS production in human aortic endothelial cells in vitro. Drug Discov Ther 2023; 17:312-319. [PMID: 37880104 DOI: 10.5582/ddt.2023.01069] [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] [Indexed: 10/27/2023]
Abstract
The precise role of indoleamine 2,3-dioxygenase (IDO) in cardiovascular diseases (CVD) among people living with HIV (PLWH) is still under debate, despite recognized links. This study aimed to investigate the impact of elevated IDO activity on endothelial dysfunction in PLWH. A total of 38 PLWH, who had not previously received anti-retroviral therapy (ART), were enrolled in the study. These participants were monitored for 36 months following the initiation of ART. Measurements including plasma levels of IDO activity, markers of endothelial dysfunction, inflammatory factors, and lipids. In vitro, human aortic endothelial cells (HAEC) were exposed to interferon-γ, an IDO inhibitor, a kynurenine 3-hydroxylase (KMO) inhibitor, as well as different concentrations of kynurenine. Pre-ART, PLWH demonstrated notably elevated plasma concentrations of soluble intercellular adhesion molecule 1 (sICAM-1), soluble vascular cell adhesion molecule 1(sVCAM-1), and IDO activity in comparison to healthy controls. Post-ART, both IDO activity and sICAM-1 levels experienced a significant decrease, with IDO activity reaching levels comparable to those observed in healthy controls. Furthermore, a positive correlation was observed between IDO activity and sICAM-1 (p = 0.0002), as well as sVCAM-1 (p < 0.0001) before ART. In vitro, the augmentation of kynurenine concentration in the medium and the induction of IDO expression in HAEC resulted in increased production of reactive oxygen species (ROS), with minimal impact on endothelial dysfunction. From these findings, it can be concluded that long-term ART has the potential to restore the heightened IDO activity observed in PLWH. The overexpression of IDO primarily influences the expression of ROS in HAEC.
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Affiliation(s)
- Junyang Yang
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Rentian Cai
- Department of Infectious Disease, The Second Hospital of Nanjing, Affiliated to Nanjing University of Chinese Medicine, Nanjing, China
| | - Jingna Xun
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Renfang Zhang
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Li Liu
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Yinzhong Shen
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Tangkai Qi
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Zhenyan Wang
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Wei Song
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Yang Tang
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Jianjun Sun
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Shuibao Xu
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Bihe Zhao
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Hongzhou Lu
- Department of Infectious Diseases and Nursing Research Institution, National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, Shenzhen, China
| | - Jun Chen
- Department of Infectious and Immune Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
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3
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Payet M, Septembre-Malaterre A, Gasque P, Guillot X. Human Synovial Mesenchymal Stem Cells Expressed Immunoregulatory Factors IDO and TSG6 in a Context of Arthritis Mediated by Alphaviruses. Int J Mol Sci 2023; 24:15932. [PMID: 37958918 PMCID: PMC10649115 DOI: 10.3390/ijms242115932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
Infection by arthritogenic alphaviruses (aavs) can lead to reactive arthritis, which is characterized by inflammation and persistence of the virus; however, its mechanisms remain ill-characterized. Intriguingly, it has been shown that viral persistence still takes place in spite of robust innate and adaptive immune responses, characterized notably by the infiltration of macrophages (sources of TNF-alpha) as well as T/NK cells (sources of IFN-gamma) in the infected joint. Aavs are known to target mesenchymal stem cells (MSCs) in the synovium, and we herein tested the hypothesis that the infection of MSCs may promote the expression of immunoregulators to skew the anti-viral cellular immune responses. We compared the regulated expression via human synovial MSCs of pro-inflammatory mediators (e.g., IL-1β, IL6, CCL2, miR-221-3p) to that of immunoregulators (e.g., IDO, TSG6, GAS6, miR146a-5p). We used human synovial tissue-derived MSCs which were infected with O'Nyong-Nyong alphavirus (ONNV, class II aav) alone, or combined with recombinant human TNF-α or IFN-γ, to mimic the clinical settings. We confirmed via qPCR and immunofluorescence that ONNV infected human synovial tissue-derived MSCs. Interestingly, ONNV alone did not regulate the expression of pro-inflammatory mediators. In contrast, IDO, TSG6, and GAS6 mRNA expression were increased in response to ONNV infection alone, but particularly when combined with both recombinant cytokines. ONNV infection equally decreased miR-146a-5p and miR-221-3p in the untreated cells and abrogated the stimulatory activity of the recombinant TNF-α but not the IFN-gamma. Our study argues for a major immunoregulatory phenotype of MSCs infected with ONNV which may favor virus persistence in the inflamed joint.
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Affiliation(s)
- Melissa Payet
- Research Unit ‘Etudes Pharmaco-Immunologiques’ UR EPI, Université de la Réunion, 97400 Saint-Denis, La Réunion, France; (M.P.); (A.S.-M.)
| | - Axelle Septembre-Malaterre
- Research Unit ‘Etudes Pharmaco-Immunologiques’ UR EPI, Université de la Réunion, 97400 Saint-Denis, La Réunion, France; (M.P.); (A.S.-M.)
| | - Philippe Gasque
- Research Unit ‘Etudes Pharmaco-Immunologiques’ UR EPI, Université de la Réunion, 97400 Saint-Denis, La Réunion, France; (M.P.); (A.S.-M.)
- Immunology Laboratory (LICE-OI), CHU Bellepierre, Reunion University Hospital, 97400 Saint-Denis, La Réunion, France
| | - Xavier Guillot
- Research Unit ‘Etudes Pharmaco-Immunologiques’ UR EPI, Université de la Réunion, 97400 Saint-Denis, La Réunion, France; (M.P.); (A.S.-M.)
- Rheumatology Clinical Department, CHU Bellepierre, Reunion University Hospital, 97400 Saint-Denis, La Réunion, France
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4
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Wang F, Liu M, Ma D, Cai Z, Liu L, Wang J, Zhang W, Zhao L, Zhai C, Xu Y. Dendritic cell-expressed IDO alleviates atherosclerosis by expanding CD4 +CD25 +Foxp3 +Tregs through IDO-Kyn-AHR axis. Int Immunopharmacol 2023; 116:109758. [PMID: 36706593 DOI: 10.1016/j.intimp.2023.109758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/27/2023]
Abstract
Atherosclerosis is a chronic inflammatory disease, in which immune disorders constitute an essential part of vascular pathogenesis. Accumulating evidence indicates that dendritic cells (DCs) and their tryptophan metabolisms regulate host immune responses. However, the mechanistic involvement of metabolic products from DCs in dysregulating vascular immunity during the development of atherosclerosis is far from clear. Flow cytometry examination showed immune cells were accumulated and gradually increased in the atherosclerotic lesions during the atherosclerosis progression, in which IDO+DCs were enriched. To study the role of DC-expressed IDO in the development of atherosclerosis, we made a stable IDO-overexpressing DC line (IDOoeDCs) by lentiviral infection for adoptive transfer into pro-atherosclerotic mice. Compared with DCs containing empty vector (VectorCtrlDC)-treated group, treatment of IDOoeDCs led to a significant reduction of atherosclerotic lesions in the aorta, with decreased aortic infiltration of Th1 immune cells and reduced vascular inflammation. Importantly, IDOoeDCs increased aortic kynurenine (Kyn) concentration and aryl hydrocarbon receptor (AHR) expression, concomitant with CD4+CD25+Foxp3+Treg expansion in the aortic tissues, which were abrogated by AHR antagonist treatment. These results indicate that DC-expressed IDO reduces atherosclerotic lesions by inducing aortic CD4+CD25+Foxp3+Treg expansion through IDO-Kyn-AHR axis, which may represent a novel possibility for treatment or prevention of atherosclerosis.
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Affiliation(s)
- Fengge Wang
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China; Anhui Province Key Laboratory of Active Biological Macro-molecules, Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wannan Medical College, Wuhu, Anhui 241000, China
| | - Meng Liu
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Dan Ma
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Zecheng Cai
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Lei Liu
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Juncheng Wang
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Wenjie Zhang
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Lin Zhao
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Chengfeng Zhai
- Anhui Province Key Laboratory of Active Biological Macro-molecules, Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wannan Medical College, Wuhu, Anhui 241000, China
| | - Yuekang Xu
- Anhui Provincial Key Laboratory for Conservation and Exploitation of Biological Resources, School of Life Science, Anhui Normal University, Wuhu, Anhui 241000, China.
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5
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Chu CQ. Animal models for large vessel vasculitis - The unmet need. RHEUMATOLOGY AND IMMUNOLOGY RESEARCH 2023; 4:4-10. [PMID: 37138652 PMCID: PMC10150876 DOI: 10.2478/rir-2023-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 02/19/2023] [Indexed: 05/05/2023]
Abstract
Our understanding of the pathogenesis of large vessel vasculitis (LVV) are mainly achieved by studying the arteries taken from temporal artery biopsy in giant cell arteries (GCA) or surgical or autopsy specimens in Takayasu arteritis (TAK). These artery specimens provide invaluable information about pathological changes in these conditions that GCA and TAK are similar but are distinctly different in immune cell infiltrate and distribution of inflammatory cells in anatomical locations. However, these specimens of established arteritis do not provide information of the arteritis initiation and early events which are impossible to obtain in human artery specimens. Animal models for LVV are needed but not available. Here, several approaches are proposed for experimentation to generate animal models to aid in delineating the interaction of immune reaction with arterial wall components.
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Affiliation(s)
- Cong-Qiu Chu
- Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, Oregon97239, USA
- Innovent Biologics (USA), Rockville, Maryland20850, USA
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6
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Ala M, Eftekhar SP. The Footprint of Kynurenine Pathway in Cardiovascular Diseases. Int J Tryptophan Res 2022; 15:11786469221096643. [PMID: 35784899 PMCID: PMC9248048 DOI: 10.1177/11786469221096643] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/28/2022] [Indexed: 12/30/2022] Open
Abstract
Kynurenine pathway is the main route of tryptophan metabolism and produces several metabolites with various biologic properties. It has been uncovered that several cardiovascular diseases are associated with the overactivation of kynurenine pathway and kynurenine and its metabolites have diagnostic and prognostic value in cardiovascular diseases. Furthermore, it was found that several kynurenine metabolites can differently affect cardiovascular health. For instance, preclinical studies have shown that kynurenine, xanthurenic acid and cis-WOOH decrease blood pressure; kynurenine and 3-hydroxyanthranilic acid prevent atherosclerosis; kynurenic acid supplementation and kynurenine 3-monooxygenase (KMO) inhibition improve the outcome of stroke. Indoleamine 2,3-dioxygenase (IDO) overactivity and increased kynurenine levels improve cardiac and vascular transplantation outcomes, whereas exacerbating the outcome of myocardial ischemia, post-ischemic myocardial remodeling, and abdominal aorta aneurysm. IDO inhibition and KMO inhibition are also protective against viral myocarditis. In addition, dysregulation of kynurenine pathway is observed in several conditions such as senescence, depression, diabetes, chronic kidney disease (CKD), cirrhosis, and cancer closely connected to cardiovascular dysfunction. It is worth defining the exact effect of each metabolite of kynurenine pathway on cardiovascular health. This narrative review is the first review that separately discusses the involvement of kynurenine pathway in different cardiovascular diseases and dissects the underlying molecular mechanisms.
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Affiliation(s)
- Moein Ala
- School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Seyed Parsa Eftekhar
- Student Research Committee, Health Research Center, Babol University of Medical Sciences, Babol, Iran
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7
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Genetic Deficiency of Indoleamine 2,3-dioxygenase Aggravates Vascular but Not Liver Disease in a Nonalcoholic Steatohepatitis and Atherosclerosis Comorbidity Model. Int J Mol Sci 2022; 23:ijms23095203. [PMID: 35563591 PMCID: PMC9099704 DOI: 10.3390/ijms23095203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 02/05/2023] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is a chronic liver disease that increases cardiovascular disease risk. Indoleamine 2,3-dioxygenase-1 (IDO1)-mediated tryptophan (Trp) metabolism has been proposed to play an immunomodulatory role in several diseases. The potential of IDO1 to be a link between NASH and cardiovascular disease has never been investigated. Using Apoe−/− and Apoe−/−Ido1−/− mice that were fed a high-fat, high-cholesterol diet (HFCD) to simultaneously induce NASH and atherosclerosis, we found that Ido1 deficiency significantly accelerated atherosclerosis after 7 weeks. Surprisingly, Apoe−/−Ido1−/− mice did not present a more aggressive NASH phenotype, including hepatic lipid deposition, release of liver enzymes, and histopathological parameters. As expected, a lower L-kynurenine/Trp (Kyn/Trp) ratio was found in the plasma and arteries of Apoe−/−Ido1−/− mice compared to controls. However, no difference in the hepatic Kyn/Trp ratio was found between the groups. Hepatic transcript analyses revealed that HFCD induced a temporal increase in tryptophan 2,3-dioxygenase (Tdo2) mRNA, indicating an alternative manner to maintain Trp degradation during NASH development in both Apoe−/− and Apoe−/−Ido1−/mice−. Using HepG2 hepatoma cell and THP1 macrophage cultures, we found that iron, TDO2, and Trp degradation may act as important mediators of cross-communication between hepatocytes and macrophages regulating liver inflammation. In conclusion, we show that Ido1 deficiency aggravates atherosclerosis, but not liver disease, in a newly established NASH and atherosclerosis comorbidity model. Our data indicate that the overexpression of TDO2 is an important mechanism that helps in balancing the kynurenine pathway and inflammation in the liver, but not in the artery wall, which likely determined disease outcome in these two target tissues.
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8
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Gáspár R, Halmi D, Demján V, Berkecz R, Pipicz M, Csont T. Kynurenine Pathway Metabolites as Potential Clinical Biomarkers in Coronary Artery Disease. Front Immunol 2022; 12:768560. [PMID: 35211110 PMCID: PMC8861075 DOI: 10.3389/fimmu.2021.768560] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/22/2021] [Indexed: 12/14/2022] Open
Abstract
Coronary artery disease (CAD) is one of the leading cause of mortality worldwide. Several risk factors including unhealthy lifestyle, genetic background, obesity, diabetes, hypercholesterolemia, hypertension, smoking, age, etc. contribute to the development of coronary atherosclerosis and subsequent coronary artery disease. Inflammation plays an important role in coronary artery disease development and progression. Pro-inflammatory signals promote the degradation of tryptophan via the kynurenine pathway resulting in the formation of several immunomodulatory metabolites. An unbalanced kynurenic pathway has been implicated in the pathomechanisms of various diseases including CAD. Significant improvements in detection methods in the last decades may allow simultaneous measurement of multiple metabolites of the kynurenine pathway and such a thorough analysis of the kynurenine pathway may be a valuable tool for risk stratification and determination of CAD prognosis. Nevertheless, imbalance in the activities of different branches of the kynurenine pathway may require careful interpretation. In this review, we aim to summarize clinical evidence supporting a possible use of kynurenine pathway metabolites as clinical biomarkers in various manifestations of CAD.
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Affiliation(s)
- Renáta Gáspár
- Metabolic Diseases and Cell Signaling Research Group (MEDICS), Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Szeged, Hungary
- Interdisciplinary Centre of Excellence, University of Szeged, Szeged, Hungary
| | - Dóra Halmi
- Metabolic Diseases and Cell Signaling Research Group (MEDICS), Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Szeged, Hungary
- Interdisciplinary Centre of Excellence, University of Szeged, Szeged, Hungary
| | - Virág Demján
- Metabolic Diseases and Cell Signaling Research Group (MEDICS), Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Szeged, Hungary
- Interdisciplinary Centre of Excellence, University of Szeged, Szeged, Hungary
| | - Róbert Berkecz
- Institute of Pharmaceutical Analysis, Faculty of Pharmacy, University of Szeged, Szeged, Hungary
| | - Márton Pipicz
- Metabolic Diseases and Cell Signaling Research Group (MEDICS), Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Szeged, Hungary
- Interdisciplinary Centre of Excellence, University of Szeged, Szeged, Hungary
| | - Tamás Csont
- Metabolic Diseases and Cell Signaling Research Group (MEDICS), Department of Biochemistry, University of Szeged Albert Szent-Györgyi Medical School, Szeged, Hungary
- Interdisciplinary Centre of Excellence, University of Szeged, Szeged, Hungary
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9
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Pober JS, Chih S, Kobashigawa J, Madsen JC, Tellides G. Cardiac allograft vasculopathy: current review and future research directions. Cardiovasc Res 2021; 117:2624-2638. [PMID: 34343276 PMCID: PMC8783389 DOI: 10.1093/cvr/cvab259] [Citation(s) in RCA: 10] [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: 05/06/2021] [Revised: 07/02/2021] [Accepted: 07/29/2021] [Indexed: 12/25/2022] Open
Abstract
Cardiac allograft vasculopathy (CAV) is a pathologic immune-mediated remodelling of the vasculature in transplanted hearts and, by impairing perfusion, is the major cause of late graft loss. Although best understood following cardiac transplantation, similar forms of allograft vasculopathy occur in other vascularized organ grafts and some features of CAV may be shared with other immune-mediated vasculopathies. Here, we describe the incidence and diagnosis, the nature of the vascular remodelling, immune and non-immune contributions to pathogenesis, current therapies, and future areas of research in CAV.
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MESH Headings
- Adaptive Immunity
- Animals
- Coronary Artery Disease/epidemiology
- Coronary Artery Disease/immunology
- Coronary Artery Disease/metabolism
- Coronary Artery Disease/pathology
- Coronary Vessels/immunology
- Coronary Vessels/metabolism
- Coronary Vessels/pathology
- Endothelial Cells/immunology
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Graft Rejection/epidemiology
- Graft Rejection/immunology
- Graft Rejection/metabolism
- Graft Rejection/pathology
- Graft Survival
- Heart Transplantation/adverse effects
- Humans
- Immunity, Innate
- Muscle, Smooth, Vascular/immunology
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/immunology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Risk Factors
- Signal Transduction
- Treatment Outcome
- Vascular Remodeling
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Affiliation(s)
- Jordan S Pober
- Department of Immunobiology, Pathology and Dermatology, Yale School of Medicine, 10 Amistad Street, New Haven CT 06520-8089, USA
| | - Sharon Chih
- Division of Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Jon Kobashigawa
- Department of Medicine, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USA
| | - Joren C Madsen
- Division of Cardiac Surgery and Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - George Tellides
- Department of Surgery (Cardiac Surgery), Yale School of Medicine, New Haven, CT, USA
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10
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Walker JA, Richards S, Whelan SA, Yoo SB, Russell TL, Arinze N, Lotfollahzadeh S, Napoleon MA, Belghasem M, Lee N, Dember LM, Ravid K, Chitalia VC. Indoleamine 2,3-dioxygenase-1, a Novel Therapeutic Target for Post-Vascular Injury Thrombosis in CKD. J Am Soc Nephrol 2021; 32:2834-2850. [PMID: 34716244 PMCID: PMC8806102 DOI: 10.1681/asn.2020091310] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 08/16/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND CKD, characterized by retained uremic solutes, is a strong and independent risk factor for thrombosis after vascular procedures . Urem ic solutes such as indoxyl sulfate (IS) and kynurenine (Kyn) mediate prothrombotic effect through tissue factor (TF). IS and Kyn biogenesis depends on multiple enzymes, with therapeutic implications unexplored. We examined the role of indoleamine 2,3-dioxygenase-1 (IDO-1), a rate-limiting enzyme of kynurenine biogenesis, in CKD-associated thrombosis after vascular injury. METHODS IDO-1 expression in mice and human vessels was examined. IDO-1-/- mice, IDO-1 inhibitors, an adenine-induced CKD, and carotid artery injury models were used. RESULTS Both global IDO-1-/- CKD mice and IDO-1 inhibitor in wild-type CKD mice showed reduced blood Kyn levels, TF expression in their arteries, and thrombogenicity compared with respective controls. Several advanced IDO-1 inhibitors downregulated TF expression in primary human aortic vascular smooth muscle cells specifically in response to uremic serum. Further mechanistic probing of arteries from an IS-specific mouse model, and CKD mice, showed upregulation of IDO-1 protein, which was due to inhibition of its polyubiquitination and degradation by IS in vascular smooth muscle cells. In two cohorts of patients with advanced CKD, blood IDO-1 activity was significantly higher in sera of study participants who subsequently developed thrombosis after endovascular interventions or vascular surgery. CONCLUSION Leveraging genetic and pharmacologic manipulation in experimental models and data from human studies implicate IS as an inducer of IDO-1 and a perpetuator of the thrombotic milieu and supports IDO-1 as an antithrombotic target in CKD.
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MESH Headings
- Animals
- Aorta
- Carotid Artery Injuries/complications
- Carotid Artery Thrombosis/etiology
- Carotid Artery Thrombosis/prevention & control
- Culture Media/pharmacology
- Enzyme Induction/drug effects
- Feedback, Physiological
- Female
- HEK293 Cells
- Humans
- Indican/physiology
- Indoleamine-Pyrrole 2,3,-Dioxygenase/antagonists & inhibitors
- Indoleamine-Pyrrole 2,3,-Dioxygenase/blood
- Indoleamine-Pyrrole 2,3,-Dioxygenase/deficiency
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Kynurenine/blood
- Kynurenine/physiology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Molecular Targeted Therapy
- Myocytes, Smooth Muscle/drug effects
- Postoperative Complications/blood
- Postoperative Complications/enzymology
- Postoperative Complications/etiology
- Postoperative Complications/prevention & control
- Renal Insufficiency, Chronic/drug therapy
- Renal Insufficiency, Chronic/enzymology
- Thromboplastin/metabolism
- Thrombosis/blood
- Thrombosis/enzymology
- Thrombosis/etiology
- Thrombosis/prevention & control
- Tryptophan/metabolism
- Uremia/blood
- Vascular Surgical Procedures/adverse effects
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Affiliation(s)
- Joshua A Walker
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
- Whitaker Cardiovascular Institute, Boston University, Boston, Massachusetts
| | - Sean Richards
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Stephen A Whelan
- Chemical Instrumentation Center, Boston University, Boston, Massachusetts
| | - Sung Bok Yoo
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Teresa L Russell
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Nkiruka Arinze
- Department of Surgery, Boston University School of Medicine, Boston, Massachusetts
| | - Saran Lotfollahzadeh
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Marc A Napoleon
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Mostafa Belghasem
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Norman Lee
- Chemical Instrumentation Center, Boston University, Boston, Massachusetts
| | - Laura M Dember
- Renal-Electrolyte and Hypertension Division, Center for Clinical Epidemiology and Biostatistics, Philadelphia, Pennsylvania
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Katya Ravid
- Whitaker Cardiovascular Institute, Boston University, Boston, Massachusetts
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Vipul C Chitalia
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
- Veteran Affairs Boston Healthcare System, Boston, Massachusetts
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts
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11
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Ramprasath T, Han YM, Zhang D, Yu CJ, Zou MH. Tryptophan Catabolism and Inflammation: A Novel Therapeutic Target For Aortic Diseases. Front Immunol 2021; 12:731701. [PMID: 34630411 PMCID: PMC8496902 DOI: 10.3389/fimmu.2021.731701] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/03/2021] [Indexed: 12/14/2022] Open
Abstract
Aortic diseases are the primary public health concern. As asymptomatic diseases, abdominal aortic aneurysm (AAA) and atherosclerosis are associated with high morbidity and mortality. The inflammatory process constitutes an essential part of a pathogenic cascade of aortic diseases, including atherosclerosis and aortic aneurysms. Inflammation on various vascular beds, including endothelium, smooth muscle cell proliferation and migration, and inflammatory cell infiltration (monocytes, macrophages, neutrophils, etc.), play critical roles in the initiation and progression of aortic diseases. The tryptophan (Trp) metabolism or kynurenine pathway (KP) is the primary way of degrading Trp in most mammalian cells, disturbed by cytokines under various stress. KP generates several bioactive catabolites, such as kynurenine (Kyn), kynurenic acid (KA), 3-hydroxykynurenine (3-HK), etc. Depends on the cell types, these metabolites can elicit both hyper- and anti-inflammatory effects. Accumulating evidence obtained from various animal disease models indicates that KP contributes to the inflammatory process during the development of vascular disease, notably atherosclerosis and aneurysm development. This review outlines current insights into how perturbed Trp metabolism instigates aortic inflammation and aortic disease phenotypes. We also briefly highlight how targeting Trp metabolic pathways should be considered for treating aortic diseases.
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Affiliation(s)
| | | | | | | | - Ming-Hui Zou
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, United States
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12
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Wongpraparut N, Pengchata P, Piyophirapong S, Panchavinnin P, Pongakasira R, Arechep N, Kasetsinsombat K, Maneechotesuwan K. Indoleamine 2,3 dioxygenase (IDO) level as a marker for significant coronary artery disease. BMC Cardiovasc Disord 2021; 21:353. [PMID: 34311709 PMCID: PMC8314527 DOI: 10.1186/s12872-021-02140-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 06/24/2021] [Indexed: 11/16/2022] Open
Abstract
Background Indoleamine 2,3 dioxygenase (IDO), the rate-limiting enzyme in the kynurenine (Kyn) pathway of tryptophan (Trp) degradation, is modulated by inflammation, and is regarded as a key molecule driving immunotolerance and immunosuppressive mechanisms. Little is known about IDO activity in patients with active coronary artery disease (CAD). Methods We prospectively enrolled patients who were scheduled to undergo coronary angiography. Measurement of IDO, high-sensitivity troponin T (hs-TnT), and high-sensitivity C-reactive protein (hs-CRP) levels was performed at baseline, and IDO activity was monitored at the 6-month follow-up. Results Three hundred and five patients were enrolled. Ninety-eight patients (32.1%) presented with recent acute coronary syndrome (ACS). Significant difference in IDO, kynurenine, and hs-TnT between patients with and without significant CAD was observed. Baseline IDO activity, kynurenine level, and hs-TnT level were all significantly higher in significant CAD patients with 3-vessel, 2-vessel, and 1-vessel involvement than in those with insignificant CAD [(0.17, 0.13, and 0.16 vs. 0.03, respectively; p = 0.003), (5.89, 4.58, and 5.24 vs. 2.74 µM/g, respectively; p = 0.011), and (18.27, 12.22, and 12.86 vs. 10.89 mg/dL, respectively; p < 0.001)]. One-year mortality was 3.9%. When we compared between patients who survived and patients who died, we found a significantly lower prevalence of left main (LM) disease by coronary angiogram (6.1% vs. 33.3%, p = 0.007), and also a trend toward higher baseline kynurenine (5.07 vs. 0.79 µM/g, p = 0.082) and higher IDO (0.15 vs. 0.02, p = 0.081) in patients who survived. Conclusion Immunometabolic response mediated via IDO function was enhanced in patients with CAD, and correlated with the extent and severity of disease. Patients with LM disease had higher 1-year mortality. Lower level of IDO, as suggested by inadequate IDO response, demonstrated a trend toward predicting 1-year mortality. Trial registration TCTR Trial registration number TCTR20200626001. Date of registration 26 June 2020. “Retrospectively registered”.
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Affiliation(s)
- Nattawut Wongpraparut
- Division of Cardiology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand.
| | - Ploy Pengchata
- Division of Cardiology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand
| | - Sudarat Piyophirapong
- Department of Clinical Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pariya Panchavinnin
- Division of Cardiology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand
| | - Rungtiwa Pongakasira
- Her Majesty's Cardiac Center, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Noppadol Arechep
- Department of Clinical Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanda Kasetsinsombat
- Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kittipong Maneechotesuwan
- Division of Respiratory Diseases and Tuberculosis, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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13
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Libby P. The changing landscape of atherosclerosis. Nature 2021; 592:524-533. [PMID: 33883728 DOI: 10.1038/s41586-021-03392-8] [Citation(s) in RCA: 929] [Impact Index Per Article: 309.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 02/24/2021] [Indexed: 02/06/2023]
Abstract
Emerging evidence has spurred a considerable evolution of concepts relating to atherosclerosis, and has called into question many previous notions. Here I review this evidence, and discuss its implications for understanding of atherosclerosis. The risk of developing atherosclerosis is no longer concentrated in Western countries, and it is instead involved in the majority of deaths worldwide. Atherosclerosis now affects younger people, and more women and individuals from a diverse range of ethnic backgrounds, than was formerly the case. The risk factor profile has shifted as levels of low-density lipoprotein (LDL) cholesterol, blood pressure and smoking have decreased. Recent research has challenged the protective effects of high-density lipoprotein, and now focuses on triglyceride-rich lipoproteins in addition to low-density lipoprotein as causal in atherosclerosis. Non-traditional drivers of atherosclerosis-such as disturbed sleep, physical inactivity, the microbiome, air pollution and environmental stress-have also gained attention. Inflammatory pathways and leukocytes link traditional and emerging risk factors alike to the altered behaviour of arterial wall cells. Probing the pathogenesis of atherosclerosis has highlighted the role of the bone marrow: somatic mutations in stem cells can cause clonal haematopoiesis, which represents a previously unrecognized but common and potent age-related contributor to the risk of developing cardiovascular disease. Characterizations of the mechanisms that underpin thrombotic complications of atherosclerosis have evolved beyond the 'vulnerable plaque' concept. These advances in our understanding of the biology of atherosclerosis have opened avenues to therapeutic interventions that promise to improve the prevention and treatment of now-ubiquitous atherosclerotic diseases.
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Affiliation(s)
- Peter Libby
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA.
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14
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Biros E, Reznik JE, Moran CS. Role of inflammatory cytokines in genesis and treatment of atherosclerosis. Trends Cardiovasc Med 2021; 32:138-142. [PMID: 33571665 DOI: 10.1016/j.tcm.2021.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/18/2021] [Accepted: 02/02/2021] [Indexed: 01/09/2023]
Abstract
Atherosclerosis demonstrates an increased rate of vascular smooth muscle cells (VSMC) plasticity characterized by switching from the differentiated contractile phenotype to a de-differentiated synthetic state. In healthy blood vessels, phenotypic switching represents a fundamental property of VSMC in maintaining vascular homeostasis. However, in atherosclerosis, it is an initial and necessary step in VSMC-derived foam cell formation. These foam cells play a decisive role in atherosclerosis progression since approximately half of all the foam cells are of VSMC origin. Our recent work showed that interferon-gamma (IFN-γ), a primary inflammatory cytokine in progressive atherosclerosis, mediates VSMC phenotype switching exclusively through upregulating mini-tryptophanyl-tRNA synthetase (mini-TrpRS). Here, we discuss the pro-atherosclerotic implication of this phenomenon that inevitably occurs in the context of a more complex regulation mediated by IFN-γ. An emerging therapeutic option for patients with progressive atherosclerosis is also discussed.
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Affiliation(s)
- Erik Biros
- College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia.
| | - Jacqueline E Reznik
- College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia
| | - Corey S Moran
- College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia
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15
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Melhem NJ, Chajadine M, Gomez I, Howangyin KY, Bouvet M, Knosp C, Sun Y, Rouanet M, Laurans L, Cazorla O, Lemitre M, Vilar J, Mallat Z, Tedgui A, Ait-Oufella H, Hulot JS, Callebert J, Launay JM, Fauconnier J, Silvestre JS, Taleb S. Endothelial Cell Indoleamine 2, 3-Dioxygenase 1 Alters Cardiac Function After Myocardial Infarction Through Kynurenine. Circulation 2020; 143:566-580. [PMID: 33272024 DOI: 10.1161/circulationaha.120.050301] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Ischemic cardiovascular diseases, particularly acute myocardial infarction (MI), is one of the leading causes of mortality worldwide. Indoleamine 2, 3-dioxygenase 1 (IDO) catalyzes 1 rate-limiting step of L-tryptophan metabolism, and emerges as an important regulator of many pathological conditions. We hypothesized that IDO could play a key role to locally regulate cardiac homeostasis after MI. METHODS Cardiac repair was analyzed in mice harboring specific endothelial or smooth muscle cells or cardiomyocyte or myeloid cell deficiency of IDO and challenged with acute myocardial infarction. RESULTS We show that kynurenine generation through IDO is markedly induced after MI in mice. Total genetic deletion or pharmacological inhibition of IDO limits cardiac injury and cardiac dysfunction after MI. Distinct loss of function of IDO in smooth muscle cells, inflammatory cells, or cardiomyocytes does not affect cardiac function and remodeling in infarcted mice. In sharp contrast, mice harboring endothelial cell-specific deletion of IDO show an improvement of cardiac function as well as cardiomyocyte contractility and reduction in adverse ventricular remodeling. In vivo kynurenine supplementation in IDO-deficient mice abrogates the protective effects of IDO deletion. Kynurenine precipitates cardiomyocyte apoptosis through reactive oxygen species production in an aryl hydrocarbon receptor-dependent mechanism. CONCLUSIONS These data suggest that IDO could constitute a new therapeutic target during acute MI.
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Affiliation(s)
- Nada Joe Melhem
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Mouna Chajadine
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Ingrid Gomez
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Kiave-Yune Howangyin
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Marion Bouvet
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Camille Knosp
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Yanyi Sun
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Marie Rouanet
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Ludivine Laurans
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Olivier Cazorla
- PHYSIOLOGIE ET MÉDECINE EXPÉRIMENTALE DU COEUR ET DES MUSCLES (PHYMEDEXP), Institut national de la santé et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Université de Montpellier, Centre Hospitalier Régional Universitaire (CHRU) Montpellier, France (O.C., J.F.)
| | - Mathilde Lemitre
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - José Vilar
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Ziad Mallat
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.).,Division of Cardiovascular Medicine, University of Cambridge, Addenbrooke's Hospital, United Kingdom (Z.M.)
| | - Alain Tedgui
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Hafid Ait-Oufella
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Jean-Sébastien Hulot
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Jacques Callebert
- Service de Biochimie, Assistance Publique Hôpitaux de Paris, and Institut National de la Santé et de la Recherche Médicale UMR942, Hôpital Lariboisière, France (J.C., J.-M.L.)
| | - Jean-Marie Launay
- Service de Biochimie, Assistance Publique Hôpitaux de Paris, and Institut National de la Santé et de la Recherche Médicale UMR942, Hôpital Lariboisière, France (J.C., J.-M.L.)
| | - Jeremy Fauconnier
- PHYSIOLOGIE ET MÉDECINE EXPÉRIMENTALE DU COEUR ET DES MUSCLES (PHYMEDEXP), Institut national de la santé et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Université de Montpellier, Centre Hospitalier Régional Universitaire (CHRU) Montpellier, France (O.C., J.F.)
| | - Jean-Sébastien Silvestre
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
| | - Soraya Taleb
- Université de Paris, Paris-Centre de Recherche Cardiovasculaire (PARCC), Institut National de la Santé et de la Recherche Médicale, France (N.-J.M., M.C., I.G., K.-Y.H., M.B., C.K., Y.S., M.R., L.L., M.L., J.V., Z.M., A.T., H.A.-O., J.-S.H., J.-S.S., S.T.)
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16
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Zaric BL, Radovanovic JN, Gluvic Z, Stewart AJ, Essack M, Motwalli O, Gojobori T, Isenovic ER. Atherosclerosis Linked to Aberrant Amino Acid Metabolism and Immunosuppressive Amino Acid Catabolizing Enzymes. Front Immunol 2020; 11:551758. [PMID: 33117340 PMCID: PMC7549398 DOI: 10.3389/fimmu.2020.551758] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 08/25/2020] [Indexed: 02/05/2023] Open
Abstract
Cardiovascular disease is the leading global health concern and responsible for more deaths worldwide than any other type of disorder. Atherosclerosis is a chronic inflammatory disease in the arterial wall, which underpins several types of cardiovascular disease. It has emerged that a strong relationship exists between alterations in amino acid (AA) metabolism and the development of atherosclerosis. Recent studies have reported positive correlations between levels of branched-chain amino acids (BCAAs) such as leucine, valine, and isoleucine in plasma and the occurrence of metabolic disturbances. Elevated serum levels of BCAAs indicate a high cardiometabolic risk. Thus, BCAAs may also impact atherosclerosis prevention and offer a novel therapeutic strategy for specific individuals at risk of coronary events. The metabolism of AAs, such as L-arginine, homoarginine, and L-tryptophan, is recognized as a critical regulator of vascular homeostasis. Dietary intake of homoarginine, taurine, and glycine can improve atherosclerosis by endothelium remodeling. Available data also suggest that the regulation of AA metabolism by indoleamine 2,3-dioxygenase (IDO) and arginases 1 and 2 are mediated through various immunological signals and that immunosuppressive AA metabolizing enzymes are promising therapeutic targets against atherosclerosis. Further clinical studies and basic studies that make use of animal models are required. Here we review recent data examining links between AA metabolism and the development of atherosclerosis.
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Affiliation(s)
- Bozidarka L. Zaric
- Department of Radiobiology and Molecular Genetics, “VINČA” Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jelena N. Radovanovic
- Department of Radiobiology and Molecular Genetics, “VINČA” Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Zoran Gluvic
- Department of Endocrinology and Diabetes, Faculty of Medicine, University Clinical-Hospital Centre Zemun-Belgrade, University of Belgrade, Belgrade, Serbia
| | - Alan J. Stewart
- School of Medicine, University of St Andrews, St Andrews, United Kingdom
| | - Magbubah Essack
- Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), Computational Bioscience Research Center, Computer (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Olaa Motwalli
- College of Computing and Informatics, Saudi Electronic University (SEU), Medina, Saudi Arabia
| | - Takashi Gojobori
- Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), Computational Bioscience Research Center, Computer (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Esma R. Isenovic
- Department of Radiobiology and Molecular Genetics, “VINČA” Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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17
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Watanabe R, Berry GJ, Liang DH, Goronzy JJ, Weyand CM. Pathogenesis of Giant Cell Arteritis and Takayasu Arteritis-Similarities and Differences. Curr Rheumatol Rep 2020; 22:68. [PMID: 32845392 DOI: 10.1007/s11926-020-00948-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Giant cell arteritis (GCA) and Takayasu arteritis (TAK) are auto-inflammatory and autoimmune diseases with a highly selective tissue tropism for medium and large arteries. In both diseases, CD4+ T cells and macrophages form granulomatous lesions within the arterial wall, a tissue site normally protected by immune privilege. Vascular lesions can be accompanied by an extravascular component, typically an intense hepatic acute phase response that produces well-known laboratory abnormalities, e.g., elevated ESR and CRP. It is unclear whether GCA and TAK lie on a spectrum of disease or whether they represent fundamentally different disease processes. RECENT FINDINGS GCA and TAK share many clinical features, but there are substantial differences in genetics, epidemiology, disease mechanisms, response to treatment, and treatment complications that give rise to different disease trajectories. A significant difference lies in the composition of the wall-infiltrating immune cell compartment, which in TAK includes a significant population of CD8+ T cells as well as natural killer cells, specifying disparate disease effector pathways mediating tissue damage and vessel wall remodeling. Despite the similarities in tissue tropism and histomorphology, GCA and TAK are two distinct vasculitides that rely on separate disease mechanisms and require disease-specific approaches in diagnosis and management.
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Affiliation(s)
- Ryu Watanabe
- Department of Medicine, Stanford University School of Medicine, CCSR Building Room 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA.,Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Gerald J Berry
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - David H Liang
- Department of Medicine, Stanford University School of Medicine, CCSR Building Room 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA
| | - Jörg J Goronzy
- Department of Medicine, Stanford University School of Medicine, CCSR Building Room 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA
| | - Cornelia M Weyand
- Department of Medicine, Stanford University School of Medicine, CCSR Building Room 2225, 269 Campus Drive West, Stanford, CA, 94305-5166, USA.
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Duan L, Li S, Wang L, Jing Y, Li G, Sun Y, Sun W, Li Y, Zhao L, Xin S. Melatonin Plays a Critical Protective Role in Nicotine-Related Abdominal Aortic Aneurysm. Front Physiol 2020; 11:866. [PMID: 32765304 PMCID: PMC7379742 DOI: 10.3389/fphys.2020.00866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/26/2020] [Indexed: 01/10/2023] Open
Abstract
Aim: Smoking is a major risk factor for abdominal aortic aneurysm (AAA). Among the components of smoke, nicotine is known to exert pro-atherosclerotic, prothrombotic, and proangiogenic effects on vascular smooth muscle cells (VSMCs). The current study was designed to investigate the mechanisms through which nicotine induces vascular wall dysfunction and to examine whether melatonin protects against nicotine-related AAA. Methods: In this study, an enzyme-linked immunosorbent assay (ELISA) was used to measure melatonin and TNF-α levels, as well as total antioxidant status (TAS), in patients with AAA. We established a nicotine-related AAA model and explored the mechanisms underlying the therapeutic effects of melatonin. Tissue histopathology was used to assess vascular function, while western blotting (WB) and immunofluorescence staining were performed to detect protein expression. Results: We observed melatonin insufficiency in the serum from patients with AAA, particularly smokers. Moreover, melatonin level was positively correlated with antioxidant capacity. In the in vivo model, nicotine accelerated AAA expansion and destroyed vascular structure. Furthermore, OPN, LC3II, p62, matrix metalloproteinase-2 (MMP-2), matrix metalloproteinase-9 (MMP-9), NF-κB p65, TNF-α, phosphorylated AKT, and phosphorylated mTOR levels were increased, in vivo, following nicotine treatment, while SM22α and α-SMA levels were reduced. Additionally, melatonin attenuated the effects of nicotine on AAA and reversed changes in protein expression. Moreover, melatonin lost its protective effects following bafilomycin A1-mediated inhibition of autophagy. Conclusion: Based on our data, melatonin exerts a beneficial effect on rats with nicotine-related AAA by downregulating the AKT-mTOR signaling pathway, improving autophagy dysfunction, and restoring the VSMC phenotype.
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Affiliation(s)
- Liren Duan
- Department of Vascular Surgery, The First Hospital of China Medical University, Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, China
| | - Shenli Li
- Department of Anesthesiology, The People's Hospital of Liaoning Province, Shenyang, China
| | - Lei Wang
- Department of Vascular Surgery, The First Hospital of China Medical University, Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, China
| | - Yuchen Jing
- Department of Vascular Surgery, The First Hospital of China Medical University, Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, China
| | - Guangxin Li
- Department of Surgery, Yale University School of Medicine, New Haven, CT, United States
| | - Yaodong Sun
- Department of Vascular Surgery, The First Hospital of China Medical University, Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, China
| | - Weifeng Sun
- Department of Vascular Surgery, The First Hospital of China Medical University, Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, China
| | - Yalun Li
- Department of Anorectal Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Lin Zhao
- Department of Pharmacology, School of Pharmacy, Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, China
| | - Shijie Xin
- Department of Vascular Surgery, The First Hospital of China Medical University, Key Laboratory of Pathogenesis, Prevention and Therapeutics of Aortic Aneurysm, Shenyang, China
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Ketelhuth DFJ. The immunometabolic role of indoleamine 2,3-dioxygenase in atherosclerotic cardiovascular disease: immune homeostatic mechanisms in the artery wall. Cardiovasc Res 2020; 115:1408-1415. [PMID: 30847484 DOI: 10.1093/cvr/cvz067] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 01/30/2019] [Accepted: 03/05/2019] [Indexed: 01/05/2023] Open
Abstract
Coronary heart disease and stroke, the two most common cardiovascular diseases worldwide, are triggered by complications of atherosclerosis. Atherosclerotic plaques are initiated by a maladaptive immune response triggered by accumulation of lipids in the artery wall. Hence, disease is influenced by several non-modifiable and modifiable risk factors, including dyslipidaemia, hypertension, smoking, and diabetes. Indoleamine 2,3-dioxygenase (IDO), the rate-limiting enzyme in the kynurenine pathway of tryptophan (Trp) degradation, is modulated by inflammation and regarded as a key molecule driving immunotolerance and immunosuppressive mechanisms. A large body of evidence indicates that IDO-mediated Trp metabolism is involved directly or indirectly in atherogenesis. This review summarizes evidence from basic and clinical research showing that IDO is a major regulatory enzyme involved in the maintenance of immunohomeostasis in the vascular wall, as well as current knowledge about promising targets for the development of new anti-atherosclerotic drugs.
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Affiliation(s)
- Daniel F J Ketelhuth
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden.,Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, Univ. of Southern Denmark, J. B. Winsløws Vej 21(3), Odense C, Denmark
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20
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Milutinović A, Šuput D, Zorc-Pleskovič R. Pathogenesis of atherosclerosis in the tunica intima, media, and adventitia of coronary arteries: An updated review. Bosn J Basic Med Sci 2020; 20:21-30. [PMID: 31465719 PMCID: PMC7029210 DOI: 10.17305/bjbms.2019.4320] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 07/31/2019] [Indexed: 02/07/2023] Open
Abstract
Atherosclerosis is a chronic inflammatory disease of arteries and it affects the structure and function of all three layers of the coronary artery wall. Current theories suggest that the dysfunction of endothelial cells is one of the initial steps in the development of atherosclerosis. The view that the tunica intima normally consists of a single layer of endothelial cells attached to the subendothelial layer and internal elastic membrane has been questioned in recent years. The structure of intima changes with age and it becomes multilayered due to migration of smooth muscle cells from the media to intima. At this stage, the migration and proliferation of smooth muscle cells do not cause pathological changes in the intima. The multilayering of intima is classically considered to be an important stage in the development of atherosclerosis, but in fact atherosclerotic plaques develop only focally due to the interplay of various processes that involve the resident and invading inflammatory cells. The tunica media consists of multiple layers of smooth muscle cells that produce the extracellular matrix, and this layer normally does not contain microvessels. During the development of atherosclerosis, the microvessels from the tunica adventitia or from the lumen may penetrate thickened media to provide nutrition and oxygenation. According to some theories, the endothelial dysfunction of these nutritive vessels may significantly contribute to the atherosclerosis of coronary arteries. The adventitia contains fibroblasts, progenitor cells, immune cells, microvessels, and adrenergic nerves. The degree of inflammatory cell infiltration into the adventitia, which can lead to the formation of tertiary lymphoid organs, correlates with the severity of atherosclerotic plaques. Coronary arteries are surrounded by perivascular adipose tissue that also participates in the atherosclerotic process.
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Affiliation(s)
- Aleksandra Milutinović
- Institute of Histology and Embryology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
| | - Dušan Šuput
- Institute of Pathophysiology, Medical Faculty, University of Ljubljana, Ljubljana, Slovenia.
| | - Ruda Zorc-Pleskovič
- Institute of Histology and Embryology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia; International Center for Cardiovascular Diseases MC Medicor d.d., Izola, Slovenia.
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21
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Watanabe R, Maeda T, Zhang H, Berry GJ, Zeisbrich M, Brockett R, Greenstein AE, Tian L, Goronzy JJ, Weyand CM. MMP (Matrix Metalloprotease)-9-Producing Monocytes Enable T Cells to Invade the Vessel Wall and Cause Vasculitis. Circ Res 2019; 123:700-715. [PMID: 29970365 DOI: 10.1161/circresaha.118.313206] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
RATIONALE Giant cell arteritis (GCA)-a primary vasculitis of medium and large arteries-is associated with vessel wall damage, elastic membrane fragmentation, and vascular remodeling. Proteinases are believed to contribute to pathogenesis by degrading extracellular matrix and causing tissue injury. OBJECTIVE The MMP (matrix metalloproteinase)-9-a type IV collagenase-is produced in the vasculitic lesions of GCA. It is unknown which pathogenic processes are MMP-9 dependent. METHODS AND RESULTS The tissue transcriptome of GCA-affected temporal arteries contained high amounts of MMP-9 transcripts, and immunostaining for pro-MMP-9 localized the enzyme to wall-infiltrating macrophages. MMP-2 and MMP-9 transcripts were also abundant in monocytes and monocyte-derived macrophages from patients with GCA. Patient-derived monocytes outperformed healthy monocytes in passing through engineered basement membranes. GCA CD (cluster of differentiation) 4+ T cells required MMP-9-producing monocytes to penetrate through matrix built from type IV collagen. In vivo functions of MMP-9 were tested in a human artery-SCID (severe combined immunodeficiency) chimera model by blocking enzyme activity with a highly specific monoclonal antibody or by injecting rMMP-9 (recombinant MMP-9). Inhibiting MMP-9 activity profoundly suppressed vascular injury, decreased the density of inflammatory infiltrates ( P<0.001), reduced intramural neoangiogenesis ( P<0.001), and prevented intimal layer hyperplasia ( P<0.001). rMMP-9 amplified all domains of vasculitic activity, promoted assembly of T-cell infiltrates ( P<0.05), intensified formation of new microvessels ( P<0.001), and worsened intimal thickening ( P<0.001). Systemic delivery of N-acetyl-proline-glycine-proline-a matrikine produced by MMP-9-mediated gelatinolysis-had limited vasculitogenic effects. CONCLUSIONS In large vessel vasculitis, MMP-9 controls the access of monocytes and T cells to the vascular wall. T cells depend on MMP-9-producing monocytes to pass through collagen IV-containing basement membrane. Invasion of vasculitogenic T cells and monocytes, formation of neoangiogenic networks, and neointimal growth all require the enzymatic activity of MMP-9, identifying this protease as a potential therapeutic target to restore the immunoprivilege of the arterial wall in large vessel vasculitis.
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Affiliation(s)
- Ryu Watanabe
- From the Division of Immunology and Rheumatology, Department of Medicine (R.W., T.M., H.Z., M.Z., J.J.G., C.M.W.)
| | - Toshihisa Maeda
- From the Division of Immunology and Rheumatology, Department of Medicine (R.W., T.M., H.Z., M.Z., J.J.G., C.M.W.)
| | - Hui Zhang
- From the Division of Immunology and Rheumatology, Department of Medicine (R.W., T.M., H.Z., M.Z., J.J.G., C.M.W.)
| | | | - Markus Zeisbrich
- From the Division of Immunology and Rheumatology, Department of Medicine (R.W., T.M., H.Z., M.Z., J.J.G., C.M.W.)
| | | | | | - Lu Tian
- Department of Biomedical Data Science, Stanford University School of Medicine, CA (L.T.)
| | - Jörg J Goronzy
- From the Division of Immunology and Rheumatology, Department of Medicine (R.W., T.M., H.Z., M.Z., J.J.G., C.M.W.)
| | - Cornelia M Weyand
- From the Division of Immunology and Rheumatology, Department of Medicine (R.W., T.M., H.Z., M.Z., J.J.G., C.M.W.)
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22
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Liang Y, Yu Z, Song Y, Wang T, Xiao B. Indoleamine 2,3-Dioxygenase Activation by Interferon Gamma in Vascular Endothelial Rat Cells Requires Noncanonical NF-κB Signaling. Transplant Proc 2019; 51:2141-2145. [PMID: 31307771 DOI: 10.1016/j.transproceed.2019.03.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/13/2019] [Indexed: 01/15/2023]
Abstract
Indoleamine 2,3-dioxygenase (IDO) is an important enzyme in immune response regulation; cells that express IDO can suppress T-cell responses. Endothelial cells (ECs) play an important role in graft rejection. Therefore, we investigated the role of IDO expression by vascular ECs in immunoregulation. We demonstrated that interferon gamma can upregulate IDO expression in cultured ECs. Moreover, IDO induction by interferon gamma required IKKα activation, a part of the noncanonical NF-κB signaling pathway. In addition, IκB kinase α (IKKα) silencing resulted in significantly reduced IPO expression, demonstrating an essential role of NF-κB signaling pathway in IDO activation in vitro. These results may have an implication for regulating the immune response to alloantigens. The results obtained are important not only in understanding the role of ECs in the regulation of the transplantation immune response, but also in determining a potential therapeutic target for inhibiting allograft rejection.
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Affiliation(s)
- Yingzi Liang
- Department of Plastic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhou Yu
- Department of Plastic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yajuan Song
- Department of Plastic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Tong Wang
- Department of Plastic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Bo Xiao
- Department of Plastic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
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23
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Sodium Sulfite Exacerbates Allograft Vasculopathy and Affects Tryptophan Breakdown in Murine Heterotopic Aortic Transplantation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8461048. [PMID: 31089419 PMCID: PMC6476130 DOI: 10.1155/2019/8461048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 02/27/2019] [Indexed: 12/30/2022]
Abstract
Graft vasculopathy is the main feature of chronic rejection in organ transplantation, with oxidative stress being a major trigger. Inflammation-associated prooxidant processes may be controlled by antioxidants; however, interference with redox-regulated mechanisms is a complex endeavor. An essential feature of the cellular immune response is the acceleration of tryptophan (Trp) breakdown, leading to the formation of several bioactive catabolites. Long-term activation of this immunobiochemical pathway contributes to the establishment of a tolerogenic environment, thereby supporting allograft survival. Herein, the impact of the antioxidant sodium sulfite on the development of graft vasculopathy was assessed in murine aortic transplantation. Allogeneic (BALB/c to C57BL/6) heterotopic murine aortic transplantations were performed. Animals were left untreated or were treated with 10 μl of 0.1 M, of 0.01 M sodium sulfite, or of 0.1 M sodium sulfate, intraperitoneally once/day, until postoperative day (POD) 100. Grafts were assessed by histology, immunohistochemistry, and adhesion molecule gene expression. Serum concentrations of tryptophan and its catabolite kynurenine (Kyn) were measured. On day 100, graft vasculopathy was significantly increased upon treatment with 0.1 M sodium sulfite, compared to allogeneic untreated controls (p = 0.004), which correlated with a significant increase of α-smooth-muscle-actin, Vcam-1, and P-selectin. Serum Kyn concentrations increased in the allogeneic control group over time (p < 0.05, POD ≥ 50), while low-dose sodium sulfite treatment (0.01 M) treatment resulted in a decrease in Kyn levels over time (p < 0.05, POD ≥ 10), compared to the respective baselines (p < 0.05). Longitudinal analysis of serum metabolite concentrations in the different treatment groups further identified an overall effect of sodium sulfite on Kyn concentrations. Antioxidative treatment may result in ambivalent consequences. Our data reveal that an excess of antioxidants like sodium sulfite can aggravate allograft vasculopathy, which further highlights the challenges associated with interventions that interfere with the complex interplay of redox-regulated inflammatory processes.
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24
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Zorc-Pleskovič R, Pleskovič A, Vraspir-Porenta O, Zorc M, Milutinović A. Immune cells and vasa vasorum in the tunica media of atherosclerotic coronary arteries. Bosn J Basic Med Sci 2018; 18:240-245. [PMID: 29671719 DOI: 10.17305/bjbms.2018.2951] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/19/2018] [Accepted: 02/19/2018] [Indexed: 11/16/2022] Open
Abstract
In coronary artery disease (CAD), the disruption of the tunica media immune privilege manifests as increased leukocyte infiltration and the formation of vasa vasorum. We aimed to characterize the immune privilege status of the tunica media in human coronary arteries (CAs) with atherosclerotic plaques, by comparing the abundance and composition of immune-cell infiltrates within the individual arterial-wall layers, and by evaluating vasa vasorum neovascularization of the tunica media. The tissue samples were obtained from 36 symptomatic patients with diffuse CAD (aged 60-72 years) who underwent coronary endarterectomy. T and B cells, macrophages and endothelial cells in the CAs were detected by immunohistochemistry. Morphological analysis of CAs showed significant atherosclerotic changes in all specimens. In the media, we observed damage and loss of smooth muscle cells, destruction of the extracellular matrix architecture, and fibrosis. There were 43.3% of immune cells in the intima, 50% in the adventitia, and 6.7% in the media. In the media, 51.1% of the immune cells were T cells (p ˂ 0.001 compared to B cells and macrophages; ANOVA, Scheffe post hoc analysis), 23.5% were B cells, and 25.4% were macrophages. The number of vasa vasorum in the media was 1 in 38.9% of CAs, 2-3 in 36.1%, and ≥4 in 25% of CAs. Our results indicate that, in atherosclerotic CAs, the immune privilege of the media is disrupted by the infiltration of T and B cells, macrophages, and the presence of vasa vasorum.
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Affiliation(s)
- Ruda Zorc-Pleskovič
- Institute of Histology and Embryology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
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25
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Forteza MJ, Polyzos KA, Baumgartner R, Suur BE, Mussbacher M, Johansson DK, Hermansson A, Hansson GK, Ketelhuth DFJ. Activation of the Regulatory T-Cell/Indoleamine 2,3-Dioxygenase Axis Reduces Vascular Inflammation and Atherosclerosis in Hyperlipidemic Mice. Front Immunol 2018; 9:950. [PMID: 29867939 PMCID: PMC5949314 DOI: 10.3389/fimmu.2018.00950] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 04/17/2018] [Indexed: 12/21/2022] Open
Abstract
T-cell activation is characteristic during the development of atherosclerosis. While overall T-cell responses have been implicated in disease acceleration, regulatory T cells (Tregs) exhibit atheroprotective effects. The expression of the enzyme indoleamine 2,3-dioxygenase-1 (IDO1), which catalyzes the degradation of tryptophan (Trp) along the kynurenine pathway, has been implicated in the induction and expansion of Treg populations. Hence, Tregs can reciprocally promote IDO1 expression in dendritic cells (DCs) via reverse signaling mechanisms during antigen presentation. In this study, we hypothesize that triggering the "Treg/IDO axis" in the artery wall is atheroprotective. We show that apolipoprotein B100-pulsed tumor growth factor beta 2-treated tolerogenic DCs promote de novo FoxP3+ Treg expansion in vivo. This local increase in Treg numbers is associated with increased vascular IDO1 expression and a robust reduction in the atherosclerotic burden. Using human primary cell cultures, we show for the first time that IDO1 expression and activity can be regulated by cytotoxic T-lymphocyte associated protein-4, which is a constitutive molecule expressed and secreted by Tregs, in smooth muscle cells, endothelial cells, and macrophages. Altogether, our data suggest that Tregs and IDO1-mediated Trp metabolism can mutually regulate one another in the vessel wall to promote vascular tolerance mechanisms that limit inflammation and atherosclerosis.
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Affiliation(s)
- Maria J Forteza
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Konstantinos A Polyzos
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Roland Baumgartner
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Bianca E Suur
- Center for Molecular Medicine, Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden.,Department of Vascular Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Marion Mussbacher
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Daniel K Johansson
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Andreas Hermansson
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Göran K Hansson
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Daniel F J Ketelhuth
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
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26
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Tryptophan catabolites along the indoleamine 2,3-dioxygenase pathway as a biological link between depression and cancer. Behav Pharmacol 2018. [DOI: 10.1097/fbp.0000000000000384] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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27
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Abstract
SIGNIFICANCE The nicotinamide adenine dinucleotide (NAD+)/reduced NAD+ (NADH) and NADP+/reduced NADP+ (NADPH) redox couples are essential for maintaining cellular redox homeostasis and for modulating numerous biological events, including cellular metabolism. Deficiency or imbalance of these two redox couples has been associated with many pathological disorders. Recent Advances: Newly identified biosynthetic enzymes and newly developed genetically encoded biosensors enable us to understand better how cells maintain compartmentalized NAD(H) and NADP(H) pools. The concept of redox stress (oxidative and reductive stress) reflected by changes in NAD(H)/NADP(H) has increasingly gained attention. The emerging roles of NAD+-consuming proteins in regulating cellular redox and metabolic homeostasis are active research topics. CRITICAL ISSUES The biosynthesis and distribution of cellular NAD(H) and NADP(H) are highly compartmentalized. It is critical to understand how cells maintain the steady levels of these redox couple pools to ensure their normal functions and simultaneously avoid inducing redox stress. In addition, it is essential to understand how NAD(H)- and NADP(H)-utilizing enzymes interact with other signaling pathways, such as those regulated by hypoxia-inducible factor, to maintain cellular redox homeostasis and energy metabolism. FUTURE DIRECTIONS Additional studies are needed to investigate the inter-relationships among compartmentalized NAD(H)/NADP(H) pools and how these two dinucleotide redox couples collaboratively regulate cellular redox states and cellular metabolism under normal and pathological conditions. Furthermore, recent studies suggest the utility of using pharmacological interventions or nutrient-based bioactive NAD+ precursors as therapeutic interventions for metabolic diseases. Thus, a better understanding of the cellular functions of NAD(H) and NADP(H) may facilitate efforts to address a host of pathological disorders effectively. Antioxid. Redox Signal. 28, 251-272.
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Affiliation(s)
- Wusheng Xiao
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
| | - Rui-Sheng Wang
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
| | - Diane E Handy
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
| | - Joseph Loscalzo
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School , Boston, Massachusetts
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28
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Polyzos KA, Ketelhuth DFJ. The role of the kynurenine pathway of tryptophan metabolism in cardiovascular disease. Hamostaseologie 2017; 35:128-36. [DOI: 10.5482/hamo-14-10-0052] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 12/18/2014] [Indexed: 12/14/2022] Open
Abstract
SummaryCoronary heart disease and stroke, the deadliest forms of cardiovascular disease (CVD), are mainly caused by atherosclerosis, a chronic inflammatory disease of the artery wall driven by maladaptive immune responses in the vessel wall. Various risk factors for CVD influence this pathogenic process, including diabetes mellitus, hypertension, dyslipidaemia, and obesity. Indoleamine 2,3-dioxygenase (IDO), an enzyme catalyzing the rate-limiting step in the kynurenine pathway of tryptophan degradation, is strongly induced by inflammation in several tissues, including the artery wall. An increasing body of evidence indicates that IDO promotes immune tolerance, decreases inflammation, and functions as a homeostatic mechanism against excessive immune reactions.This review provides an overview of the emerging field of the kynurenine pathway of tryptophan degradation in CVD, emphasizing the role of IDO-mediated tryptophan metabolism and its metabolites in the modulation of ‘classical’ cardiovascular risk factors, such as hypertension, obesity, lipid metabolism, diabetes mellitus, and in the development of atherosclerotic CVD.
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29
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Indoleamine 2,3-Dioxygenase (IDO) Enzyme Links Innate Immunity and Altered T-Cell Differentiation in Non-ST Segment Elevation Acute Coronary Syndrome. Int J Mol Sci 2017; 19:ijms19010063. [PMID: 29278387 PMCID: PMC5796013 DOI: 10.3390/ijms19010063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/13/2017] [Accepted: 12/25/2017] [Indexed: 01/21/2023] Open
Abstract
Atherosclerosis is a chronic inflammatory disease characterized by a complex interplay between innate and adaptive immunity. Dendritic cells (DCs) play a key role in T-cell activation and regulation by promoting a tolerogenic environment through the expression of the immunosuppressive enzyme indoleamine 2,3-dioxygenase (IDO), an intracellular enzyme involved in tryptophan catabolism. IDO expression and activity was analyzed in monocytes derived DCs (MDDCs) from non-ST segment elevation myocardial infarction (NSTEMI) patients, stable angina (SA) patients and healthy controls (HC) by real-time quantitative polymerase chain reaction (RT-qPCR) before and after in vitro maturation with lipopolysaccharide (LPS). The amount of tryptophan catabolite; kynurenine; was evaluated in the culture supernatants of mature-MDDCs by ELISA assay. Autologous mixed lymphocyte reaction (MLR) between mature-MDDCs and naïve T-cells was carried out to study the differentiation towards T-helper 1 (Th1) and induced regulatory T-cells (iTreg). Analysis of IDO mRNA transcripts in mature-MDDCs revealed a significant reduction in cells isolated from NSTEMI (625.0 ± 128.2; mean ± SEM) as compared with those from SA (958.5 ± 218.3; p = 0.041) and from HC (1183.6 ± 231.6; p = 0.034). Furthermore; the concentration of kynurenine was lower in NSTEMI patients (2.78 ± 0.2) and SA (2.98 ± 0.25) as compared with HC (5.1 ± 0.69 ng/mL; p = 0.002 and p = 0.016; respectively). When IDO-competent mature-MDDCs were co-cultured with allogeneic naïve T-cells, the ratio between the percentage of generated Th1 and iTreg was higher in NSTEMI (4.4 ± 2.9) than in SA (1.8 ± 0.6; p = 0.056) and HC (0.9 ± 0.3; p = 0.008). In NSTEMI, the tolerogenic mechanism of the immune response related to IDO production by activated MDDCs is altered, supporting their role in T-cell dysregulation.
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30
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Pober JS, Merola J, Liu R, Manes TD. Antigen Presentation by Vascular Cells. Front Immunol 2017; 8:1907. [PMID: 29312357 PMCID: PMC5744398 DOI: 10.3389/fimmu.2017.01907] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 12/14/2017] [Indexed: 01/21/2023] Open
Abstract
Antigen presentation by cells of the vessel wall may initiate rapid and localized memory immune responses in peripheral tissues. Peptide antigens displayed on major histocompatibility complex (MHC) molecules on the surface of endothelial cells (ECs) can be recognized by T cell receptors on circulating effector memory T cells (TEM), triggering both transendothelial migration and activation. The array of co-stimulatory receptors, adhesion molecules, and cytokines expressed by ECs serves to modulate T cell activation responses. While the effects of these interactions vary among species, vascular beds, and vascular segments within the same tissue, they are capable of triggering allograft rejection without direct involvement of professional antigen-presenting cells and may play a similar role in host defense against infections and in autoimmunity. Once across the endothelium, extravasating TEM then contact mural cells of the vessel wall, including pericytes or vascular smooth muscle cells, which may also present antigens and provide signals that further regulate T cell responses. Collectively, these interactions provide an unexplored opportunity in which targeting of vascular cells can be used to modulate immune responses. In organ transplantation, targeting ECs with siRNA to reduce expression of MHC molecules may additionally mitigate perioperative injuries by preformed alloantibodies, further reducing the risk of graft rejection. Similarly, genetic manipulation of vascular cells to minimize antigen-dependent responses can be used to increase perfusion of tissue engineered organs without triggering rejection.
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Affiliation(s)
- Jordan S Pober
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, United States
| | - Jonathan Merola
- Department of Surgery, Yale School of Medicine, New Haven, CT, United States
| | - Rebecca Liu
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, United States
| | - Thomas D Manes
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, United States
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Baumgartner R, Forteza MJ, Ketelhuth DFJ. The interplay between cytokines and the Kynurenine pathway in inflammation and atherosclerosis. Cytokine 2017; 122:154148. [PMID: 28899580 DOI: 10.1016/j.cyto.2017.09.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 12/20/2022]
Abstract
The kynurenine pathway (KP) is the major metabolic route of tryptophan (Trp) metabolism. Indoleamine 2,3-dioxygenase (IDO1), the enzyme responsible for the first and rate-limiting step in the pathway, as well as other enzymes in the pathway, have been shown to be highly regulated by cytokines. Hence, the KP has been implicated in several pathologic conditions, including infectious diseases, psychiatric disorders, malignancies, and autoimmune and chronic inflammatory diseases. Additionally, recent studies have linked the KP with atherosclerosis, suggesting that Trp metabolism could play an essential role in the maintenance of immune homeostasis in the vascular wall. This review summarizes experimental and clinical evidence of the interplay between cytokines and the KP and the potential role of the KP in cardiovascular diseases.
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Affiliation(s)
- Roland Baumgartner
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute and Karolinska University Hospital, SE-17176 Stockholm, Sweden.
| | - Maria J Forteza
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute and Karolinska University Hospital, SE-17176 Stockholm, Sweden
| | - Daniel F J Ketelhuth
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska Institute and Karolinska University Hospital, SE-17176 Stockholm, Sweden
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Abstract
Cardiovascular disease is the leading cause of death worldwide, both in the general population and among patients with chronic kidney disease (CKD). In most cases, the underlying cause of the cardiovascular event is atherosclerosis - a chronic inflammatory disease. CKD accelerates atherosclerosis via augmentation of inflammation, perturbation of lipid metabolism, and other mechanisms. In the artery wall, subendothelial retention of plasma lipoproteins triggers monocyte-derived macrophages and T helper type 1 (TH1) cells to form atherosclerotic plaques. Inflammation is initiated by innate immune reactions to modified lipoproteins and is perpetuated by TH1 cells that react to autoantigens from the apolipoprotein B100 protein of LDL. Other T cells are also active in atherosclerotic lesions; regulatory T cells inhibit pathological inflammation, whereas TH17 cells can promote plaque fibrosis. The slow build-up of atherosclerotic plaques is asymptomatic, but plaque rupture or endothelial erosion can induce thrombus formation, leading to myocardial infarction or ischaemic stroke. Targeting risk factors for atherosclerosis has reduced mortality, but a need exists for novel therapies to stabilize plaques and to treat arterial inflammation. Patients with CKD would likely benefit from such preventive measures.
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Affiliation(s)
- Anton Gisterå
- Center for Molecular Medicine, Department of Medicine, Karolinska University Hospital, Karolinska Institutet, SE-17176 Stockholm, Sweden
| | - Göran K Hansson
- Center for Molecular Medicine, Department of Medicine, Karolinska University Hospital, Karolinska Institutet, SE-17176 Stockholm, Sweden
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Abnormal kynurenine pathway of tryptophan catabolism in cardiovascular diseases. Cell Mol Life Sci 2017; 74:2899-2916. [PMID: 28314892 DOI: 10.1007/s00018-017-2504-2] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/26/2017] [Accepted: 03/08/2017] [Indexed: 02/06/2023]
Abstract
Kynurenine pathway (KP) is the primary path of tryptophan (Trp) catabolism in most mammalian cells. The KP generates several bioactive catabolites, such as kynurenine (Kyn), kynurenic acid (KA), 3-hydroxykynurenine (3-HK), xanthurenic acid (XA), and 3-hydroxyanthranilic acid (3-HAA). Increased catabolite concentrations in serum are associated with several cardiovascular diseases (CVD), including heart disease, atherosclerosis, and endothelial dysfunction, as well as their risk factors, including hypertension, diabetes, obesity, and aging. The first catabolic step in KP is primarily controlled by indoleamine 2,3-dioxygenase (IDO) and tryptophan 2,3-dioxygenase (TDO). Following this first step, the KP has two major branches, one branch is mediated by kynurenine 3-monooxygenase (KMO) and kynureninase (KYNU) and is responsible for the formation of 3-HK, 3-HAA, and quinolinic acid (QA); and another branch is controlled by kynurenine amino-transferase (KAT), which generates KA. Uncontrolled Trp catabolism has been demonstrated in distinct CVD, thus, understanding the underlying mechanisms by which regulates KP enzyme expression and activity is paramount. This review highlights the recent advances on the effect of KP enzyme expression and activity in different tissues on the pathological mechanisms of specific CVD, KP is an inflammatory sensor and modulator in the cardiovascular system, and KP catabolites act as the potential biomarkers for CVD initiation and progression. Moreover, the biochemical features of critical KP enzymes and principles of enzyme inhibitor development are briefly summarized, as well as the therapeutic potential of KP enzyme inhibitors against CVD is briefly discussed.
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Liu G, Chen S, Zhong J, Teng K, Yin Y. Crosstalk between Tryptophan Metabolism and Cardiovascular Disease, Mechanisms, and Therapeutic Implications. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:1602074. [PMID: 28377795 PMCID: PMC5362714 DOI: 10.1155/2017/1602074] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 02/16/2017] [Indexed: 01/21/2023]
Abstract
The cardiovascular diseases (CVD) associated with the highest rates of morbidity are coronary heart disease and stroke, and the primary etiological factor leading to these conditions is atherosclerosis. This long-lasting inflammatory disease, characterized by how it affects the artery wall, results from maladaptive immune responses linked to the vessel wall. Tryptophan (Trp) is oxidized in a constitutive manner by tryptophan 2,3-dioxygenase in liver cells, and for alternative cell types, it is catalyzed in the presence of a differently inducible indoleamine 2,3-dioxygenase (IDO1) in the context of a specific pathophysiological environment. Resultantly, this leads to a rise in the production of kynurenine (Kyn) metabolites. Inflammation in the preliminary stages of atherosclerosis has a significant impact on IDO1, and IDO1 and the IDO1-associated pathway constitute critical mediating agents associated with the immunoinflammatory responses that characterize advanced atherosclerosis. The purpose of this review is to survey the recent literature addressing the kynurenine pathway of tryptophan degradation in CVD, and the author will direct attention to the function performed by IDO1-mediated tryptophan metabolism.
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Affiliation(s)
- Gang Liu
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center of Healthy Livestock, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Co-Innovation Center of Animal Production Safety, Hunan 410125, China
| | - Shuai Chen
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center of Healthy Livestock, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Co-Innovation Center of Animal Production Safety, Hunan 410125, China
| | - Jin Zhong
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kunling Teng
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yulong Yin
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center of Healthy Livestock, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Hunan Co-Innovation Center of Animal Production Safety, Hunan 410125, China
- Laboratory of Animal Nutrition and Human Health, School of Biology, Hunan Normal University, Changsha, Hunan, China
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
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Strasser B, Becker K, Fuchs D, Gostner JM. Kynurenine pathway metabolism and immune activation: Peripheral measurements in psychiatric and co-morbid conditions. Neuropharmacology 2017; 112:286-296. [DOI: 10.1016/j.neuropharm.2016.02.030] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 02/17/2016] [Accepted: 02/23/2016] [Indexed: 12/14/2022]
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Cuartero MI, de la Parra J, García-Culebras A, Ballesteros I, Lizasoain I, Moro MÁ. The Kynurenine Pathway in the Acute and Chronic Phases of Cerebral Ischemia. Curr Pharm Des 2016; 22:1060-73. [PMID: 25248805 DOI: 10.2174/1381612822666151214125950] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 12/11/2015] [Indexed: 12/12/2022]
Abstract
Kynurenines are a wide range of catabolites which derive from tryptophan through the "Kynurenine Pathway" (KP). In addition to its peripheral role, increasing evidence shows a role of the KP in the central nervous system (CNS), mediating both physiological and pathological functions. Indeed, an imbalance in this route has been associated with several neurodegenerative disorders such as Alzheimer´s and Huntington´s diseases. Altered KP catabolism has also been described during both acute and chronic phases of stroke; however the contribution of the KP to the pathophysiology of acute ischemic damage and of post-stroke disorders during the chronic phase including depression and vascular dementia, and the exact mechanisms implicated in the regulation of the KP after stroke are not well established yet. A better understanding of the regulation and activity of the KP after stroke could provide new pharmacological tools in both acute and chronic phases of stroke. In this review, we will make an overview of CNS modulation by the KP. We will detail the KP contribution in the ischemic damage, how the unbalance of the KP might trigger an alteration of the cognitive function after stroke as well as potential targets for the development of new drugs.
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Affiliation(s)
- María Isabel Cuartero
- Unidad de Investigación Neurovascular, Departamento de Farmacología, Facultad de Medicina, Universidad Complutense, Avenida Complutense s/n, 28040 Madrid, Spain.
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de Bie J, Lim CK, Guillemin GJ. Kynurenines, Gender and Neuroinflammation; Showcase Schizophrenia. Neurotox Res 2016; 30:285-94. [DOI: 10.1007/s12640-016-9641-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/31/2016] [Accepted: 06/07/2016] [Indexed: 12/17/2022]
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38
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Xiao B, Liu B, Song Y, Yu Z, Guo S. Local cytotoxic T-lymphocyte-associated antigen-4 immunoglobulin inhibition of rejection response is dependent on indoleamine 2,3-dioxygenase activities in the allograft. Transplant Proc 2015; 46:3637-40. [PMID: 25498102 DOI: 10.1016/j.transproceed.2014.06.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 04/23/2014] [Accepted: 06/17/2014] [Indexed: 11/28/2022]
Abstract
A previous study showed that local gene transfer of cytotoxic T-lymphocyte-associated antigen-4 immunoglobulin (CTLA4Ig) significantly prolonged the survival time of rat flap allografts. However, the underlying mechanism is not fully understood. Indoleamine 2,3-dioxygenase (IDO) is considered to be able to modulate the unresponsiveness state of allografts. In this study, we tested the expression of the CD80 molecule, IDO mRNA, and the level of the tryptophan metabolite kynurenine with or without the application of the IDO blocker 1-methyl-tryptophan (1-MT) in a rat composite tissue allotransplantation model. CD80 expression could be detected in the allograft. The ration of IDO mRNA/glyceraldehyde 3-phosphate dehydrogenase (GAPDH) mRNA and the level of kynurenine were both enhanced (46.3 ± 8.8 versus 4.6 ± 1.8 and 18.9 ± 1.3 μmol/L versus 2.1 ± 0.2 μmol/L separately) after adenovirus-mediated CTLA4Ig (AdCTLA4Ig) transduction. When 1-MT was applied to the AdCTLA4Ig perfusion recipients, the ration of IDO mRNA/GAPDH mRNA (5.2 ± 2.9) and the level of kynurenine (0.8 ± 0.5 μmol/L) were significantly reduced. Moreover, the allograft survival time was greatly reduced when 1-MT was applied to AdCTLA4Ig perfusion recipients compared to single AdCTLA4Ig perfusion therapy recipients (7.2 days versus 13.6 days). We showed that the inhibitory effect of locally delivered CTLA4Ig is dependent on IDO activities within the allograft.
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Affiliation(s)
- B Xiao
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China.
| | - B Liu
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China
| | - Y Song
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China
| | - Z Yu
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China
| | - S Guo
- Department of Plastic Surgery, Xijing Hospital, University of The Fourth Military Medical University, Xi'an, China.
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Metghalchi S, Ponnuswamy P, Simon T, Haddad Y, Laurans L, Clément M, Dalloz M, Romain M, Esposito B, Koropoulis V, Lamas B, Paul JL, Cottin Y, Kotti S, Bruneval P, Callebert J, den Ruijter H, Launay JM, Danchin N, Sokol H, Tedgui A, Taleb S, Mallat Z. Indoleamine 2,3-Dioxygenase Fine-Tunes Immune Homeostasis in Atherosclerosis and Colitis through Repression of Interleukin-10 Production. Cell Metab 2015; 22:460-71. [PMID: 26235422 DOI: 10.1016/j.cmet.2015.07.004] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 05/06/2015] [Accepted: 07/01/2015] [Indexed: 01/01/2023]
Abstract
Indoleamine 2,3-dioxygenase 1 (Ido1) is a rate-limiting enzyme that catalizes the degradation of tryptophan along the kynurenine pathway. Here, we show that Ido1 activity sustains an immunostimulatory potential through inhibition of interleukin (Il)10. In atherosclerosis, Ido1-dependent inhibition of Il10 translates into disease exacerbation. The resistance of Ido1-deficient mice to enhanced immune activation is broken in Ido1/Il10 double-deficient mice, which show exaggerated immune responses and develop severe spontaneous colitis. We demonstrate that Ido1 activity is required for the regulation of Il10 and that kynurenic acid (Kna), an Ido1-derived metabolite, is responsible for reduced Il10 production through activation of a cAMP-dependent pathway and inhibition of Erk1/2 phosphorylation. Resupplementation of Ido1-deficient mice with Kna limits Il10 expression and promotes atherosclerosis. In human atherosclerotic lesions, increased levels of Kna are associated with an unstable plaque phenotype, and its blood levels predict death and recurrent myocardial infarction in patients with coronary artery disease.
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Affiliation(s)
- Sarvenaz Metghalchi
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Padmapriya Ponnuswamy
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Tabassome Simon
- Assistance Publique, Hôpitaux de Paris (AP-HP), Hôpital St Antoine, UF de Pharmacologie Clinique, URC-EST, and Université Pierre et Marie Curie, Paris, France
| | - Yacine Haddad
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Ludivine Laurans
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Marc Clément
- Division of Cardiovascular Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 2QQ, UK
| | - Marion Dalloz
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Mélissa Romain
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Bruno Esposito
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Vincent Koropoulis
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Bruno Lamas
- Avenir Team Gut Microbiota and Immunity, INSERM U1157/UMR CNRS 7203, UMR 1319 Micalis, INRA, Jouy-en-Josas, France, AP-HP Hôpital St Antoine, Department of Gastroenterology and Université Pierre et Marie Curie 6, Paris, France
| | - Jean-Louis Paul
- Université Paris-Sud, Equipe d'Accueil 4529, UFR de Pharmacie, Chatenay-Malabry, France and AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Yves Cottin
- Centre Hospitalo-Universitaire de Dijon, Service de Cardiologie, Dijon, France
| | - Salma Kotti
- Assistance Publique, Hôpitaux de Paris (AP-HP), Hôpital St Antoine, UF de Pharmacologie Clinique, URC-EST, and Université Pierre et Marie Curie, Paris, France
| | - Patrick Bruneval
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France; AP-HP, Hôpital Européen Georges Pompidou, Université Paris-Descartes, Paris, France
| | - Jacques Callebert
- AP-HP, Service de Biochimie and INSERM U942, Hôpital Lariboisière, Paris, France
| | - Hester den Ruijter
- Laboratory for Experimental Cardiology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Jean-Marie Launay
- AP-HP, Service de Biochimie and INSERM U942, Hôpital Lariboisière, Paris, France
| | - Nicolas Danchin
- AP-HP, Hôpital Européen Georges Pompidou, Université Paris-Descartes, Paris, France
| | - Harry Sokol
- Avenir Team Gut Microbiota and Immunity, INSERM U1157/UMR CNRS 7203, UMR 1319 Micalis, INRA, Jouy-en-Josas, France, AP-HP Hôpital St Antoine, Department of Gastroenterology and Université Pierre et Marie Curie 6, Paris, France
| | - Alain Tedgui
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Soraya Taleb
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France.
| | - Ziad Mallat
- Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France; Division of Cardiovascular Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge CB2 2QQ, UK.
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Abstract
IDO1 (indoleamine 2,3-dioxygenase 1) is a member of a unique class of mammalian haem dioxygenases that catalyse the oxidative catabolism of the least-abundant essential amino acid, L-Trp (L-tryptophan), along the kynurenine pathway. Significant increases in knowledge have been recently gained with respect to understanding the fundamental biochemistry of IDO1 including its catalytic reaction mechanism, the scope of enzyme reactions it catalyses, the biochemical mechanisms controlling IDO1 expression and enzyme activity, and the discovery of enzyme inhibitors. Major advances in understanding the roles of IDO1 in physiology and disease have also been realised. IDO1 is recognised as a prominent immune regulatory enzyme capable of modulating immune cell activation status and phenotype via several molecular mechanisms including enzyme-dependent deprivation of L-Trp and its conversion into the aryl hydrocarbon receptor ligand kynurenine and other bioactive kynurenine pathway metabolites, or non-enzymatic cell signalling actions involving tyrosine phosphorylation of IDO1. Through these different modes of biochemical signalling, IDO1 regulates certain physiological functions (e.g. pregnancy) and modulates the pathogenesis and severity of diverse conditions including chronic inflammation, infectious disease, allergic and autoimmune disorders, transplantation, neuropathology and cancer. In the present review, we detail the current understanding of IDO1’s catalytic actions and the biochemical mechanisms regulating IDO1 expression and activity. We also discuss the biological functions of IDO1 with a focus on the enzyme's immune-modulatory function, its medical implications in diverse pathological settings and its utility as a therapeutic target.
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41
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Abrahimi P, Liu R, Pober JS. Blood Vessels in Allotransplantation. Am J Transplant 2015; 15:1748-54. [PMID: 25807965 DOI: 10.1111/ajt.13242] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 12/23/2014] [Accepted: 01/23/2015] [Indexed: 01/25/2023]
Abstract
Human vascularized allografts are perfused through blood vessels composed of cells (endothelium, pericytes, and smooth muscle cells) that remain largely of graft origin and are thus subject to host alloimmune responses. Graft vessels must be healthy to maintain homeostatic functions including control of perfusion, maintenance of permselectivity, prevention of thrombosis, and participation in immune surveillance. Vascular cell injury can cause dysfunction that interferes with these processes. Graft vascular cells can be activated by mediators of innate and adaptive immunity to participate in graft inflammation contributing to both ischemia/reperfusion injury and allograft rejection. Different forms of rejection may affect graft vessels in different ways, ranging from thrombosis and neutrophilic inflammation in hyperacute rejection, to endothelialitis/intimal arteritis and fibrinoid necrosis in acute cell-mediated or antibody-mediated rejection, respectively, and to diffuse luminal stenosis in chronic rejection. While some current therapies targeting the host immune system do affect graft vascular cells, direct targeting of the graft vasculature may create new opportunities for preventing allograft injury and loss.
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Affiliation(s)
- P Abrahimi
- Department of Immunobiology, Yale School of Medicine, New Haven, CT
| | - R Liu
- Department of Immunobiology, Yale School of Medicine, New Haven, CT
| | - J S Pober
- Department of Immunobiology, Yale School of Medicine, New Haven, CT
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42
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Wang Q, Liu D, Song P, Zou MH. Tryptophan-kynurenine pathway is dysregulated in inflammation, and immune activation. Front Biosci (Landmark Ed) 2015; 20:1116-43. [PMID: 25961549 DOI: 10.2741/4363] [Citation(s) in RCA: 235] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The kynurenine (Kyn) pathway is the major route for tryptophan (Trp) metabolism, and it contributes to several fundamental biological processes. Trp is constitutively oxidized by tryptophan 2, 3-dioxygenase in liver cells. In other cell types, it is catalyzed by an alternative inducible indoleamine-pyrrole 2, 3-dioxygenase (IDO) under certain pathophysiological conditions, which consequently increases the formation of Kyn metabolites. IDO is up-regulated in response to inflammatory conditions as a novel marker of immune activation in early atherosclerosis. Besides, IDO and the IDO-related pathway are important mediators of the immunoinflammatory responses in advanced atherosclerosis. In particular, Kyn, 3-hydroxykynurenine, and quinolinic acid are positively associated with inflammation, oxidative stress (SOX), endothelial dysfunction, and carotid artery intima-media thickness values in end-stage renal disease patients. Moreover, IDO is a potential novel contributor to vessel relaxation and metabolism in systemic infections, which is also activated in acute severe heart attacks. The Kyn pathway plays a key role in the increased prevalence of cardiovascular disease by regulating inflammation, SOX, and immune activation.
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Affiliation(s)
| | | | | | - Ming-Hui Zou
- Division of Molecular Medicine, Department of Medicine, and Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA,
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Shibata K, Hirose J, Fukuwatari T. Method for Evaluation of the Requirements of B-group Vitamins Using Tryptophan Metabolites in Human Urine. Int J Tryptophan Res 2015; 8:31-9. [PMID: 25987848 PMCID: PMC4404996 DOI: 10.4137/ijtr.s24412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/03/2015] [Accepted: 03/12/2015] [Indexed: 11/29/2022] Open
Abstract
Tryptophan metabolism is directly involved with B-group vitamins such as vitamin B2, niacin, and vitamin B6, and indirectly with vitamin B1 and pantothenic acid. We evaluated the validity of requirements of B-group vitamins set by the Dietary Reference Intakes for the Japanese (DRI-J). We investigated the fate of dietary tryptophan in 10 Japanese adult men who ate the same diet based on DRI-J during a 4-week study. Vitamin mixtures were administered based on the amounts in the basal diet during weeks 2, 3, and 4. Daily urine samples were collected eight times (days 1 and 5 in each week). Administration of vitamin mixtures had no effect on tryptophan metabolites such as anthranilic acid, kynurenic acid, xanthurenic acid, 3-hydroxyanthranilic acid, and quinolinic acid within individuals. Surplus administration of B-group vitamins against DRI-J requirements did not elicit beneficial effects on tryptophan metabolism. Our findings supported the requirements of B-group vitamins set by the DRI-J.
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Abstract
Inflammatory arterial diseases differentially affect the compartments of the vessel wall. The intima and adventitia are commonly involved by the disease process, with luminal and microvascular endothelial cells playing a critical role in the recruitment and activation of leukocytes. In contrast, the avascular media is often spared by immune-mediated disorders. Surprisingly, vascular smooth muscle cells (VSMCs), the predominant and often exclusive cell type of the media, are capable of robust proinflammatory responses to diverse stressors. The multiple cytokines and chemokines produced within the media can profoundly affect macrophage and T cell function, thus amplifying and shaping innate and adaptive immune responses. On the other hand, VSMCs and the extracellular matrix that they produce also display significant anti-inflammatory properties. The balance between the pro- and anti-inflammatory effects of VSMCs and their extracellular matrix versus the strength of the inciting immunologic events determines the pattern of medial pathology. Limitations on the extent of medial infiltration and injury, defined as medial immunoprivilege, are typically seen in arteriosclerotic diseases, such as atherosclerosis and transplant vasculopathy. Conversely, breakdown of medial immunoprivilege that manifests as more intense leukocytic infiltrates, loss of VSMCs, and destruction of the extracellular matrix architecture is a general feature of certain aneurysmal diseases and vasculitides. In this review, we consider the inflammatory and immune functions of VSMCs and how they may lead to medial immunoprivilege or medial inflammation in arterial diseases.
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Affiliation(s)
- George Tellides
- From the Departments of Surgery (G.T.) and Immunobiology (J.S.P.), Yale University School of Medicine, New Haven, CT; and Veterans Affairs Connecticut Healthcare System, West Haven, CT (G.T.).
| | - Jordan S Pober
- From the Departments of Surgery (G.T.) and Immunobiology (J.S.P.), Yale University School of Medicine, New Haven, CT; and Veterans Affairs Connecticut Healthcare System, West Haven, CT (G.T.)
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45
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Polyzos KA, Ovchinnikova O, Berg M, Baumgartner R, Agardh H, Pirault J, Gisterå A, Assinger A, Laguna-Fernandez A, Bäck M, Hansson GK, Ketelhuth DFJ. Inhibition of indoleamine 2,3-dioxygenase promotes vascular inflammation and increases atherosclerosis in Apoe-/- mice. Cardiovasc Res 2015; 106:295-302. [PMID: 25750192 DOI: 10.1093/cvr/cvv100] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 03/02/2015] [Indexed: 12/25/2022] Open
Abstract
AIMS Atherosclerosis is a chronic inflammatory disease that is initiated by the retention and accumulation of low-density lipoprotein in the artery, leading to maladaptive response of cells from the immune system and vessel wall. Strong evidence implicates indoleamine 2,3-dioxygenase (IDO), the first and rate-limiting enzyme of the kynurenine pathway of tryptophan (Trp) degradation, with immune regulation and anti-inflammatory mechanisms in different diseases. However, the role of IDO and the endogenous degradation of Trp have never been directly examined in atherosclerosis development. We used the IDO inhibitor 1-methyl-Trp (1-MT) to determine the role of IDO-mediated Trp metabolism in vascular inflammation and atherosclerosis. METHODS AND RESULTS Apoe(-/-) mice were treated with 1-MT in drinking water for 8 weeks. Systemic IDO inhibition led to a significant increase in atherosclerotic lesions that were ∼58 and 54% larger in the aortic arch and root, respectively. 1-MT treatment enhanced vascular inflammation, up-regulated VCAM-1 and CCL2, and increased CD68 macrophage accumulation into the plaque. Notably, the rise in VCAM-1 expression was not limited to the plaque but also found in smooth muscle cells (SMCs) of the tunica media. Furthermore, we found that IDO-dependent Trp metabolism by SMCs regulates VCAM-1 expression, and that 1-MT-induced acceleration of atherosclerosis and vascular inflammation can be reversed by exogenous administration of the Trp metabolite 3-hydroxyanthranilic acid (3-HAA). CONCLUSION IDO-mediated Trp metabolism regulates vascular inflammation and plaque formation in hypercholesterolaemic Apoe(-/-) mice. Our data establish that this pathway plays a major role in the pathological process of atherogenesis.
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Affiliation(s)
- Konstantinos A Polyzos
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Olga Ovchinnikova
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Martin Berg
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Roland Baumgartner
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Hanna Agardh
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - John Pirault
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Anton Gisterå
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Alice Assinger
- Institute of Physiology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Andres Laguna-Fernandez
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Magnus Bäck
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Göran K Hansson
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
| | - Daniel F J Ketelhuth
- Department of Medicine, Experimental Cardiovascular Research Unit, Center for Molecular Medicine, L8:03, Karolinska University Hospital, Stockholm S-17176, Sweden
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46
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von Rossum A, Laher I, Choy JC. Immune-mediated vascular injury and dysfunction in transplant arteriosclerosis. Front Immunol 2015; 5:684. [PMID: 25628623 PMCID: PMC4290675 DOI: 10.3389/fimmu.2014.00684] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 12/18/2014] [Indexed: 12/16/2022] Open
Abstract
Solid organ transplantation is the only treatment for end-stage organ failure but this life-saving procedure is limited by immune-mediated rejection of most grafts. Blood vessels within transplanted organs are targeted by the immune system and the resultant vascular damage is a main contributor to acute and chronic graft failure. The vasculature is a unique tissue with specific immunological properties. This review discusses the interactions of the immune system with blood vessels in transplanted organs and how these interactions lead to the development of transplant arteriosclerosis, a leading cause of heart transplant failure.
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Affiliation(s)
- Anna von Rossum
- Department of Molecular Biology and Biochemistry, Simon Fraser University , Burnaby, BC , Canada
| | - Ismail Laher
- Department of Anaesthesiology, Pharmacology and Therapeutics, University of British Columbia , Vancouver, BC , Canada
| | - Jonathan C Choy
- Department of Molecular Biology and Biochemistry, Simon Fraser University , Burnaby, BC , Canada
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47
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Zhao L, Wan L, Qiu X, Li R, Liu S, Wang D. A Metabonomics Profiling Study on Phlegm Syndrome and Blood-Stasis Syndrome in Coronary Heart Disease Patients Using Liquid Chromatography/Quadrupole Time-of-Flight Mass Spectrometry. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2014; 2014:385102. [PMID: 25140185 PMCID: PMC4129150 DOI: 10.1155/2014/385102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 05/20/2014] [Accepted: 05/30/2014] [Indexed: 11/18/2022]
Abstract
A metabonomics approach based on liquid chromatography/quadrupole time-of-flight mass spectrometry (LC-Q-TOF/MS) was utilized to obtain potential biomarkers of coronary heart disease (CHD) patients and investigate the ZHENG types differentiation in CHD patients. The plasma samples of 20 CHD patients with phlegm syndrome, 20 CHD patients with blood-stasis syndrome, and 16 healthy volunteers were collected in the study. 26 potential biomarkers were identified in the plasma of CHD patients and 19 differential metabolites contributed to the discrimination of phlegm syndrome and blood-stasis syndrome in CHD patients (VIP > 1.5; P < 0.05) which mainly involved purine metabolism, pyrimidine metabolism, amino acid metabolism, steroid biosynthesis, and arachidonic acid metabolism. This study demonstrated that metabonomics approach based on LC-MS was useful for studying pathologic changes of CHD patients and interpreting the differentiation of ZHENG types (phlegm and blood-stasis syndrome) in traditional Chinese medicine (TCM).
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Affiliation(s)
- Linlin Zhao
- Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central south University, Changsha 410008, China
| | - Ling Wan
- Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central south University, Changsha 410008, China
| | - Xinjian Qiu
- Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central south University, Changsha 410008, China
| | - Ruomeng Li
- Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central south University, Changsha 410008, China
| | - Shimi Liu
- Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central south University, Changsha 410008, China
| | - Dongsheng Wang
- Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central south University, Changsha 410008, China
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48
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Chavez-Munoz C, Hartwell R, Jalili RB, Ghahary A. Immunoprotective role of IDO in engraftment of allogeneic skin substitutes. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/edm.10.53] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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49
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Libby P, Lichtman AH, Hansson GK. Immune effector mechanisms implicated in atherosclerosis: from mice to humans. Immunity 2013; 38:1092-104. [PMID: 23809160 DOI: 10.1016/j.immuni.2013.06.009] [Citation(s) in RCA: 481] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 06/12/2013] [Indexed: 02/06/2023]
Abstract
According to the traditional view, atherosclerosis results from a passive buildup of cholesterol in the artery wall. Yet, burgeoning evidence implicates inflammation and immune effector mechanisms in the pathogenesis of this disease. Both innate and adaptive immunity operate during atherogenesis and link many traditional risk factors to altered arterial functions. Inflammatory pathways have become targets in the quest for novel preventive and therapeutic strategies against cardiovascular disease, a growing contributor to morbidity and mortality worldwide. Here we review current experimental and clinical knowledge of the pathogenesis of atherosclerosis through an immunological lens and how host defense mechanisms essential for survival of the species actually contribute to this chronic disease but also present new opportunities for its mitigation.
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Affiliation(s)
- Peter Libby
- Brigham and Women's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, NRB7, Boston, MA 02115, USA.
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50
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Pedersen ER, Svingen GFT, Schartum-Hansen H, Ueland PM, Ebbing M, Nordrehaug JE, Igland J, Seifert R, Nilsen RM, Nygård O. Urinary excretion of kynurenine and tryptophan, cardiovascular events, and mortality after elective coronary angiography. Eur Heart J 2013; 34:2689-96. [DOI: 10.1093/eurheartj/eht264] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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