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Ashkenazi-Preiser H, Reuven O, Uzan-Yulzari A, Komisarov S, Cirkin R, Turjeman S, Even C, Twaik N, Ben-Meir K, Mikula I, Cohen-Daniel L, Meirow Y, Pikarsky E, Louzoun Y, Koren O, Baniyash M. The Cross-talk Between Intestinal Microbiota and MDSCs Fuels Colitis-associated Cancer Development. CANCER RESEARCH COMMUNICATIONS 2024; 4:1063-1081. [PMID: 38506672 PMCID: PMC11017962 DOI: 10.1158/2767-9764.crc-23-0421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/24/2023] [Accepted: 03/15/2024] [Indexed: 03/21/2024]
Abstract
Intestinal chronic inflammation is associated with microbial dysbiosis and accumulation of various immune cells including myeloid-derived suppressor cells (MDSC), which profoundly impact the immune microenvironment, perturb homeostasis and increase the risk to develop colitis-associated colorectal cancer (CAC). However, the specific MDSCs-dysbiotic microbiota interactions and their collective impact on CAC development remain poorly understood. In this study, using a murine model of CAC, we demonstrate that CAC-bearing mice exhibit significantly elevated levels of highly immunosuppressive MDSCs, accompanied by microbiota alterations. Both MDSCs and bacteria that infiltrate the colon tissue and developing tumors can be found in close proximity, suggesting intricate MDSC-microbiota cross-talk within the tumor microenvironment. To investigate this phenomenon, we employed antibiotic treatment to disrupt MDSC-microbiota interactions. This intervention yielded a remarkable reduction in intestinal inflammation, decreased MDSC levels, and alleviated immunosuppression, all of which were associated with a significant reduction in tumor burden. Furthermore, we underscore the causative role of dysbiotic microbiota in the predisposition toward tumor development, highlighting their potential as biomarkers for predicting tumor load. We shed light on the intimate MDSCs-microbiota cross-talk, revealing how bacteria enhance MDSC suppressive features and activities, inhibit their differentiation into mature beneficial myeloid cells, and redirect some toward M2 macrophage phenotype. Collectively, this study uncovers the role of MDSC-bacteria cross-talk in impairing immune responses and promoting tumor growth, providing new insights into potential therapeutic strategies for CAC. SIGNIFICANCE MDSCs-dysbiotic bacteria interactions in the intestine play a crucial role in intensifying immunosuppression within the CAC microenvironment, ultimately facilitating tumor growth, highlighting potential therapeutic targets for improving the treatment outcomes of CAC.
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Affiliation(s)
- Hadas Ashkenazi-Preiser
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Or Reuven
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | | | - Sharon Komisarov
- Department of mathematics, Bar-Ilan University, Ramat Gan, Israel
| | - Roy Cirkin
- Department of mathematics, Bar-Ilan University, Ramat Gan, Israel
| | - Sondra Turjeman
- Azrieli Faculty of Medicine, Bar-Ilan University, Ramat Gan, Israel
| | - Carmel Even
- Azrieli Faculty of Medicine, Bar-Ilan University, Ramat Gan, Israel
| | - Nira Twaik
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Kerem Ben-Meir
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Ivan Mikula
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Leonor Cohen-Daniel
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Yaron Meirow
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Eli Pikarsky
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
| | - Yoram Louzoun
- Department of mathematics, Bar-Ilan University, Ramat Gan, Israel
| | - Omry Koren
- Azrieli Faculty of Medicine, Bar-Ilan University, Ramat Gan, Israel
| | - Michal Baniyash
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, POB 12272, Jerusalem 91120, Israel
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Hou S, Kong F, Li X, Xu Y, Chen S, Zhang S, Zhang L, Li T, Fu Y, Li C, Wang W. Role of myeloid-derived suppressor cells in chronic brucellosis. Front Cell Infect Microbiol 2024; 14:1347883. [PMID: 38352057 PMCID: PMC10861671 DOI: 10.3389/fcimb.2024.1347883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/15/2024] [Indexed: 02/16/2024] Open
Abstract
Introduction Human brucellosis, a Brucella infection caused most common zoonosis in the world, remains a serious public health burden in China. Brucella chronic infection always causes immunosuppressive status and results in severe organ or tissue damages. The aim of this work was to study the role of the myeloid-derived suppressor cells (MDSCs) in human chronic brucellosis. Methods Fifty cases of chronic brucellosis and 40 healthy individual controls were enrolled in this study. We analyzed the frequency and subsets of MDSCs in PBMC between the chronic brucellosis and healthy control groups by flow cytometry. Furthermore, we also measured the inflammatory-related cytokines in serum samples and the MDSCs inhibition ability to the proliferation of T cells in vitro. Results We found that the frequency of MDSCs in peripheral blood and the level of IL-6 and IL-10 Th2 cytokines and Arginase-1 were significantly increased in chronic brucellosis patients. In addition, we also found that the T cell function was suppressed in vitro by co-culturing with MDSCs from brucellosis patients. Conclusion Our study described an increase of immunosuppressive MDSCs in peripheral blood of chronic brucellosis patients. These results contribute to the understanding of Brucella persistent infection, which may provide an insight for effective treatment of chronic brucellosis patients in clinical practice.
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Affiliation(s)
- Shuiping Hou
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
- Department of Microbiology, Guangzhou Center for Disease Control and Prevention (CDC), Guangzhou, China
| | - Fandong Kong
- Department of Medical Administration, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Xintong Li
- Department of Blood Components, Guangzhou Blood Center, Guangzhou, China
| | - Yanwen Xu
- Department of Obstetrics, He Xian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Shouyi Chen
- Department of Parasitic Disease and Endemic Disease Control and Prevention, Guangzhou Center for Disease Control and Prevention (CDC), Guangzhou, China
| | - Sheng Zhang
- Administration Office, Baoan Central Blood Station, Shenzhen, China
| | - Ling Zhang
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Tingting Li
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Yongshui Fu
- Clinical Transfusion Institute, Guangzhou Blood Center, Guangzhou, China
| | - Chengyao Li
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
| | - Wenjing Wang
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, China
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Bizymi N, Matthaiou AM, Mavroudi I, Batsali A, Papadaki HA. Immunomodulatory actions of myeloid-derived suppressor cells in the context of innate immunity. Innate Immun 2024; 30:2-10. [PMID: 38018014 PMCID: PMC10720601 DOI: 10.1177/17534259231215581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/30/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are notable innate immune cells, which are further divided into two subpopulations, i.e., monocytic and granulocytic. These cells are traditionally considered to mainly suppress the T-cell responses. However, more updated data indicate that their properties are rather immunomodulatory than solely immunosuppressive. Indeed, MDSCs display extensive crosstalk with other either innate or adaptive immune cells, and, according to the situation under which they are triggered, they may enhance or attenuate the immune response. However, their positive role in host's defense mechanisms under specific conditions is rarely discussed in the literature. In this mini-review, the authors briefly summarise the mechanisms of action of MDSCs under distinct conditions, such as infections and malignancies, with a particular emphasis on their role as components of the innate immunity system.
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Affiliation(s)
- Nikoleta Bizymi
- Department of Haematology, University Hospital of Heraklion, Heraklion, Crete, Greece
- Haemopoiesis Research Laboratory, School of Medicine, University of Crete, Heraklion, Crete, Greece
- Laboratory of Molecular and Cellular Pneumonology, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Andreas M. Matthaiou
- Laboratory of Molecular and Cellular Pneumonology, School of Medicine, University of Crete, Heraklion, Crete, Greece
- Respiratory Physiology Laboratory, Medical School, University of Cyprus, Nicosia, Cyprus
| | - Irene Mavroudi
- Department of Haematology, University Hospital of Heraklion, Heraklion, Crete, Greece
- Haemopoiesis Research Laboratory, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Aristea Batsali
- Department of Haematology, University Hospital of Heraklion, Heraklion, Crete, Greece
- Haemopoiesis Research Laboratory, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Helen A. Papadaki
- Department of Haematology, University Hospital of Heraklion, Heraklion, Crete, Greece
- Haemopoiesis Research Laboratory, School of Medicine, University of Crete, Heraklion, Crete, Greece
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Wu F, Ren F, Xie X, Meng J, Wu X. The implication of viability and pathogenicity by truncated lipopolysaccharide in Yersinia enterocolitica. Appl Microbiol Biotechnol 2023; 107:7165-7180. [PMID: 37728625 DOI: 10.1007/s00253-023-12785-w] [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: 06/15/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/21/2023]
Abstract
The fast envelope stress responses play a key role in the transmission and pathogenesis of Yersinia enterocolitica, one of the most common foodborne pathogens. Our previous study showed that deletion of the waaF gene, essential for the biosynthesis of lipopolysaccharide (LPS) core polysaccharides, led to the formation of a truncated LPS structure and induced cell envelope stress. This envelope stress may disturb the intracellular signal transduction, thereby affecting the physiological functions of Y. enterocolitica. In this study, truncated LPS caused by waaF deletion was used as a model of envelope stress in Y. enterocolitica. We investigated the mechanisms of envelope stress responses and the cellular functions affected by truncated LPS. Transcriptome analysis and phenotypic validation showed that LPS truncation reduced flagellar assembly, bacterial chemotaxis, and inositol phosphate metabolism, presenting lower pathogenicity and viability both in vivo and in vitro environments. Further 4D label-free phosphorylation analysis confirmed that truncated LPS perturbed multiple intracellular signal transduction pathways. Specifically, a comprehensive discussion was conducted on the mechanisms by which chemotactic signal transduction and Rcs system contribute to the inhibition of chemotaxis. Finally, the pathogenicity of Y. enterocolitica with truncated LPS was evaluated in vitro using IPEC-J2 cells as models, and it was found that truncated LPS exhibited reduced adhesion, invasion, and toxicity of Y. enterocolitica to IPEC-J2 cells. Our research provides an understanding of LPS in the regulation of Y. enterocolitica viability and pathogenicity and, thus, opening new avenues to develop novel food safety strategies or drugs to prevent and control Y. enterocolitica infections. KEY POINTS: • Truncated LPS reduces flagellar assembly, chemotaxis, and inositol phosphate metabolism in Y. enterocolitica. • Truncated LPS reduces adhesion, invasion, and toxicity of Y. enterocolitica to IPEC-J2 cells. • Truncated LPS regulates intracellular signal transduction of Y. enterocolitica.
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Affiliation(s)
- Fan Wu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Bioengineering, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Fengyun Ren
- Laboratory of Nutrient Resources and Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Science, Tianjin, 300308, China
| | - Xixian Xie
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Bioengineering, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Jiao Meng
- Laboratory of Nutrient Resources and Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Science, Tianjin, 300308, China.
| | - Xin Wu
- Laboratory of Nutrient Resources and Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Science, Tianjin, 300308, China
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Gercke P, Lautenschlager N, Vedder N, van Geffen C, Renz H, Kolahian S. Intranasal EP4 agonist and arginase-1 therapy in a murine model of asthma. Eur J Pharmacol 2023; 957:176040. [PMID: 37666288 DOI: 10.1016/j.ejphar.2023.176040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/24/2023] [Accepted: 08/30/2023] [Indexed: 09/06/2023]
Abstract
Research findings evermore suggest a crucial role of myeloid-derived suppressor cells (MDSCs) in chronic lung diseases including asthma. Previously, we showed that intravenous (IV) treatment with a prostaglandin E2 receptor 4 (EP4) agonist, L-902,688, promoted MDSC suppressive activity. IV therapy with L-902,688 and BCT-100, a human pegylated arginase-1, ameliorated lung inflammatory features in a murine model of asthma. Here, we further investigate the potential therapeutic approach by studying the local therapy effects on the lungs after intranasal (IN) application. Using a two-week model of house dust mite (HDM)-induced murine asthma, the effect of IN treatment with L-902,688 or BCT-100 on in vivo lung function, inflammatory features of asthma and MDSC generation and activation was studied. Our experiments demonstrated increased suppressive activity of pulmonary MDSCs after induction of allergic airway disease. IN treatment with L-902,688 and BCT-100 further enhanced the immunosuppressive activity of pulmonary MDSCs. Additionally, treatment with BCT-100 reduced pulmonary T cell numbers. Asthmatic mice that received IN L-902,688 showed improved in vivo lung function. In conclusion, our results underline the potential of modulating MDSCs systemically or locally as a future therapeutic option in airway inflammatory diseases such as asthma.
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Affiliation(s)
- Philipp Gercke
- Institute of Laboratory Medicine, German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35043, Marburg, Germany
| | - Nikoleta Lautenschlager
- Institute of Laboratory Medicine, German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35043, Marburg, Germany
| | - Nora Vedder
- Institute of Laboratory Medicine, German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35043, Marburg, Germany
| | - Chiel van Geffen
- Institute of Laboratory Medicine, German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35043, Marburg, Germany
| | - Harald Renz
- Institute of Laboratory Medicine, German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35043, Marburg, Germany
| | - Saeed Kolahian
- Institute of Laboratory Medicine, German Center for Lung Research (DZL), The Universities of Giessen and Marburg Lung Center (UGMLC), Philipps University Marburg, 35043, Marburg, Germany.
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6
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Zhang MN, Yuan YL, Ao SH. Advances in the study of myeloid-derived suppressor cells in infectious lung diseases. Front Immunol 2023; 14:1125737. [PMID: 37063919 PMCID: PMC10090681 DOI: 10.3389/fimmu.2023.1125737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/17/2023] [Indexed: 03/31/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature cells capable of inhibiting T-cell responses. MDSCs have a crucial role in the regulation of the immune response of the body to pathogens, especially in inflammatory response and pathogenesis during anti-infection. Pathogens such as bacteria and viruses use MDSCs as their infectious targets, and even some pathogens may exploit the inhibitory activity of MDSCs to enhance pathogen persistence and chronic infection of the host. Recent researches have revealed the pathogenic significance of MDSCs in pathogens such as bacteria and viruses, despite the fact that the majority of studies on MDSCs have focused on tumor immune evasion. With the increased prevalence of viral respiratory infections, the resurgence of classical tuberculosis, and the advent of medication resistance in common bacterial pneumonia, research on MDSCs in these illnesses is intensifying. The purpose of this work is to provide new avenues for treatment approaches to pulmonary infectious disorders by outlining the mechanism of action of MDSCs as a biomarker and therapeutic target in pulmonary infectious diseases.
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Affiliation(s)
- Meng-Nan Zhang
- College of Integrated Chinese and Western Medicine and the Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Yu-Lai Yuan
- The Department of Respirology of the Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Su-Hua Ao
- The Department of Respirology of the Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, China
- *Correspondence: Su-Hua Ao,
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Marzhoseyni Z, Mousavi MJ, Saffari M, Ghotloo S. Immune escape strategies of Pseudomonas aeruginosa to establish chronic infection. Cytokine 2023; 163:156135. [PMID: 36724716 DOI: 10.1016/j.cyto.2023.156135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 01/08/2023] [Accepted: 01/12/2023] [Indexed: 02/02/2023]
Abstract
The infection caused by P. aeruginosa still is dangerous throughout the world. This is partly due to its immune escape mechanisms considerably increasing the bacterial survival in the host. By escape from recognition by TLRs, interference with complement system activation, phagocytosis inhibition, production of ROS, inhibition of NET production, interference with the generation of cytokines, inflammasome inhibition, reduced antigen presentation, interference with cellular and humoral immunity, and induction of apoptotic cell death and MDSc, P. aeruginosa breaks down the barriers of the immune system and causes lethal infections in the host. Recognition of other immune escape mechanisms of P. aeruginosa may provide a basis for the future treatment of the infection. This manuscript may provide new insights and information for the development of new strategies to combat P. aeruginosa infection. In the present manuscript, the escape mechanisms of P. aeruginosa against immune response would be reviewed.
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Affiliation(s)
- Zeynab Marzhoseyni
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Javad Mousavi
- Department of Hematology, Faculty of Allied Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Mahmood Saffari
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Somayeh Ghotloo
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Borgna E, Prochetto E, Gamba JC, Marcipar I, Cabrera G. Role of myeloid-derived suppressor cells during Trypanosoma cruzi infection. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 375:117-163. [PMID: 36967151 DOI: 10.1016/bs.ircmb.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Chagas disease (CD), caused by the protozoan parasite Trypanosoma cruzi, is the third largest parasitic disease burden globally. Currently, more than 6 million people are infected, mainly in Latin America, but international migration has turned CD into an emerging health problem in many nonendemic countries. Despite intense research, a vaccine is still not available. A complex parasite life cycle, together with numerous immune system manipulation strategies, may account for the lack of a prophylactic or therapeutic vaccine. There is substantial experimental evidence supporting that T. cruzi acute infection generates a strong immunosuppression state that involves numerous immune populations with regulatory/suppressive capacity. Myeloid-derived suppressor cells (MDSCs), Foxp3+ regulatory T cells (Tregs), regulatory dendritic cells and B regulatory cells are some of the regulatory populations that have been involved in the acute immune response elicited by the parasite. The fact that, during acute infection, MDSCs increase notably in several organs, such as spleen, liver and heart, together with the observation that depletion of those cells can decrease mouse survival to 0%, strongly suggests that MDSCs play a major role during acute T. cruzi infection. Accumulating evidence gained in different settings supports the capacity of MDSCs to interact with cells from both the effector and the regulatory arms of the immune system, shaping the outcome of the response in a very wide range of scenarios that include pathological and physiological processes. In this sense, the aim of the present review is to describe the main knowledge about MDSCs acquired so far, including several crosstalk with other immune populations, which could be useful to gain insight into their role during T. cruzi infection.
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Warheit-Niemi HI, Huizinga GP, Edwards SJ, Wang Y, Murray SK, O’Dwyer DN, Moore BB. Fibrotic Lung Disease Alters Neutrophil Trafficking and Promotes Neutrophil Elastase and Extracellular Trap Release. Immunohorizons 2022; 6:817-834. [PMID: 36534439 PMCID: PMC10542701 DOI: 10.4049/immunohorizons.2200083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 01/04/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive, irreversible disease characterized by collagen deposition within the interstitium of the lung. This impairs gas exchange and results in eventual respiratory failure. Clinical studies show a correlation between elevated neutrophil numbers and IPF disease progression; however, the mechanistic roles neutrophils play in this disease are not well described. In the present study, we describe alterations to the trafficking and function of neutrophils after the development of fibrosis. We observed increased numbers of total and aged neutrophils in peripheral tissues of fibrotic mice. This appeared to be driven by an upregulation of neutrophil chemokine Cxcl2 by lung cells. In addition, neutrophil recruitment back to the bone marrow for clearance appeared to be impaired, because we saw decreased aged neutrophils in the bone marrow of fibrotic mice. Neutrophils in fibrosis were activated, because ex vivo assays showed increased elastase and extracellular trap release by neutrophils from fibrotic mice. This likely mediated disease exacerbation, because mice exhibiting a progressive disease phenotype with greater weight loss and mortality had more activated neutrophils and increased levels of extracellular DNA present in their lungs than did mice with a nonprogressive disease phenotype. These findings further our understanding of the dynamics of neutrophil populations and their trafficking in progressive fibrotic lung disease and may help inform treatments targeting neutrophil function for patients with IPF experiencing disease exacerbation in the future.
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Affiliation(s)
| | | | - Summer J. Edwards
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI
| | - Yizhou Wang
- Department of Biostatistics, University of Michigan, Ann Arbor, MI
| | - Susan K. Murray
- Department of Biostatistics, University of Michigan, Ann Arbor, MI
| | - David N. O’Dwyer
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI
| | - Bethany B. Moore
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI
- Immunology Graduate Program, University of Michigan, Ann Arbor, MI
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI
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Martin C, Dhôte T, Ladjemi MZ, Andrieu M, Many S, Karunanithy V, Pène F, Da Silva J, Burgel PR, Witko-Sarsat V. Specific circulating neutrophils subsets are present in clinically stable adults with cystic fibrosis and are further modulated by pulmonary exacerbations. Front Immunol 2022; 13:1012310. [PMID: 36248793 PMCID: PMC9560797 DOI: 10.3389/fimmu.2022.1012310] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/13/2022] [Indexed: 12/03/2022] Open
Abstract
The progressive lung destruction in cystic fibrosis (CF) is tightly associated with chronic bacterial infection and neutrophil-dominated airway inflammation. CF pulmonary disease is complicated by episodes of acute exacerbations, contributing to irreversible lung damage. We hypothesized that circulating subsets of neutrophils from clinically stable adults with CF present some phenotypic specificities that could amplify their activation during an infectious episode. The aim of the present study was to examine the different neutrophil subsets in whole blood and in the low density neutrophils (LDN) that co-purify with peripheral blood mononuclear cells (PBMC) in clinically stable adults with CF and in CF adults during pulmonary exacerbations compared to healthy donors. Blood samples were obtained from 22 adults with CF (16 in stable state and 6 during pulmonary exacerbations) and from 20 healthy donors. Flow cytometry analysis of 13 different markers related to lineage (CD45, CD15), maturity (CD16, CD10, and CD33), activation (CD62L, CD11b, CD66b, and CD114), metabolism (GLUT-1, LOX1) and immunosuppression (PD1, PD-L1) was carried out within whole blood and within the LDN fraction. Unsupervised analysis of flow cytometry data was performed using visual t-distributed stochastic neighbor embedding (vi-tSNE). A significant increase in the CD11b expression in neutrophils from CF patients during exacerbations was observed compared to neutrophils from stable CF patients or to healthy donors, indicative of a circulating activation state due to an infectious status. The percentage of LDN was not increased in stable CF patients but increased during exacerbations. Analysis of neutrophil subsets using the double CD16/CD62L labeling revealed a significant increase in the CD16high/CD62Llow subset in all CF patients compared to healthy donors. In contrast, an increase in the CD16low/CD62Lhigh subset was observed only in CF patients during exacerbations. Unsupervised analysis identified a PD-L1high/CD114high population that was present in stable CF patients and as well as in CF patients during exacerbations.
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Affiliation(s)
- Clémence Martin
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
- Service de Pneumologie & Centre de Référence Maladies Rares Mucoviscidose, site coordonnateur, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris-Centre & Université de Paris-Cité, Paris, France
| | - Théo Dhôte
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
- Service de Pneumologie & Centre de Référence Maladies Rares Mucoviscidose, site coordonnateur, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris-Centre & Université de Paris-Cité, Paris, France
| | - Maha Zohra Ladjemi
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
- Service de Médecine intensive & Réanimation, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris-Centre & Université de Paris-Cité, Paris, France
| | - Muriel Andrieu
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
| | - Souganya Many
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
| | - Vaarany Karunanithy
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
| | - Frédéric Pène
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
- Service de Médecine intensive & Réanimation, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris-Centre & Université de Paris-Cité, Paris, France
| | - Jennifer Da Silva
- Service de Pneumologie & Centre de Référence Maladies Rares Mucoviscidose, site coordonnateur, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris-Centre & Université de Paris-Cité, Paris, France
| | - Pierre-Régis Burgel
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
- Service de Pneumologie & Centre de Référence Maladies Rares Mucoviscidose, site coordonnateur, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris-Centre & Université de Paris-Cité, Paris, France
| | - Véronique Witko-Sarsat
- Institut Cochin, Inserm U1016, Centre National de la Recherche Scientifique (CNRS) UMR8104, Université Paris-Cité, Paris, France
- *Correspondence: Véronique Witko-Sarsat,
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11
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Immune Response to Biofilm Growing Pulmonary Pseudomonas aeruginosa Infection. Biomedicines 2022; 10:biomedicines10092064. [PMID: 36140163 PMCID: PMC9495460 DOI: 10.3390/biomedicines10092064] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022] Open
Abstract
Biofilm infections are tolerant to the host responses and recalcitrance to antibiotic drugs and disinfectants. The induced host-specific innate and adaptive immune responses by established biofilms are significantly implicated and contributes to the course of the infections. Essentially, the host response may be the single one factor impacting the outcome most, especially in cases where the biofilm is caused by low virulent opportunistic bacterial species. Due to the chronicity of biofilm infections, activation of the adaptive immune response mechanisms is frequently experienced, and instead of clearing the infection, the adaptive response adds to the pathogenesis. To a high degree, this has been reported for chronic Pseudomonas aeruginosa lung infections, where both a pronounced antibody response and a skewed Th1/Th2 balance has been related to a poorer outcome. In addition, detection of an adaptive immune response can be used as a significant indicator of a chronic P. aeruginosa lung infection and is included in the clinical definitions as such. Those issues are presented in the present review, along with a characterization of the airway structure in relation to immune responses towards P. aeruginosa pulmonary infections.
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12
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Park SJ, Nam DE, Seong HC, Hahn YS. New Discovery of Myeloid-Derived Suppressor Cell's Tale on Viral Infection and COVID-19. Front Immunol 2022; 13:842535. [PMID: 35185933 PMCID: PMC8850309 DOI: 10.3389/fimmu.2022.842535] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/17/2022] [Indexed: 01/08/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are generated under biological stress such as cancer, inflammatory tissue damage, and viral infection. In recent years, with occurrence of global infectious diseases, new discovery on MDSCs functions has been significantly expanded during viral infection and COVID-19. For a successful viral infection, pathogens viruses develop immune evasion strategies to avoid immune recognition. Numerous viruses induce the differentiation and expansion of MDSCs in order to suppress host immune responses including natural killer cells, antigen presenting cells, and T-cells. Moreover, MDSCs play an important role in regulation of immunopathogenesis by balancing viral infection and tissue damage. In this review article, we describe the overview of immunomodulation and genetic regulation of MDSCs during viral infection in the animal model and human studies. In addition, we include up-to-date review of role of MDSCs in SARS-CoV-2 infection and COVID-19. Finally, we discuss potential therapeutics targeting MDSCs.
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Affiliation(s)
- Soo-Jeung Park
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Da-eun Nam
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Hae Chang Seong
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Young S. Hahn
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, Charlottesville, VA, United States
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13
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Tucker SL, Sarr D, Rada B. Granulocytic Myeloid-Derived Suppressor Cells in Cystic Fibrosis. Front Immunol 2021; 12:745326. [PMID: 34621276 PMCID: PMC8490623 DOI: 10.3389/fimmu.2021.745326] [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: 07/21/2021] [Accepted: 08/24/2021] [Indexed: 11/13/2022] Open
Abstract
Cystic Fibrosis (CF) is a genetic disease that causes chronic and severe lung inflammation and infection associated with high rates of mortality. In CF, disrupted ion exchange in the epithelium results in excessive mucus production and reduced mucociliary clearance, leading to immune system exacerbation and chronic infections with pathogens such as P. aeruginosa and S. aureus. Constant immune stimulation leads to altered immune responses including T cell impairment and neutrophil dysfunction. Specifically, CF is considered a Th17-mediated disease, and it has been proposed that both P. aeruginosa and a subset of neutrophils known as granulocytic myeloid suppressor cells (gMDSCs) play a role in T cell suppression. The exact mechanisms behind these interactions are yet to be determined, but recent works demonstrate a role for arginase-1. It is also believed that P. aeruginosa drives gMDSC function as a means of immune evasion, leading to chronic infection. Herein, we review the current literature regarding immune suppression in CF by gMDSCs with an emphasis on T cell impairment and the role of P. aeruginosa in this dynamic interaction.
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Affiliation(s)
- Samantha L Tucker
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, United States
| | - Demba Sarr
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, United States
| | - Balázs Rada
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, United States
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14
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The Enigma of Low-Density Granulocytes in Humans: Complexities in the Characterization and Function of LDGs during Disease. Pathogens 2021; 10:pathogens10091091. [PMID: 34578124 PMCID: PMC8470838 DOI: 10.3390/pathogens10091091] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 12/17/2022] Open
Abstract
Low-density granulocytes (LDGs) have been characterized as important immune cells during healthy and disease states in humans, including microbial infections, cancer, and autoimmune dysfunction. However, the classification of this cell type is similar to other immune cells (e.g., neutrophils, myeloid-derived suppressor cells) and ambiguous functional standards have rendered LDG identification and isolation daunting. Furthermore, most research involving LDGs has mainly focused on adult cells and subjects, leaving increased uncertainty surrounding younger populations, especially in vulnerable neonatal groups where LDG numbers are elevated. This review aims to bring together the current research in the field of LDG biology in the context of immunity to disease, with a focus on infection. In addition, we propose to highlight the gaps in the field that, if filled, could improve upon isolation techniques and functional characterizations for LDGs separate from neutrophils and myeloid-derived suppressor cells (MDSCs). This will not only enhance understanding of LDGs during disease processes and how they differ from other cell types but will also aid in the interpretation of comparative studies and results with the potential to inform development of novel therapeutics to improve disease states in patients.
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15
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So EY, Sun C, Wu KQ, Dubielecka PM, Reginato AM, Liang OD. Inhibition of lipid phosphatase SHIP1 expands myeloid-derived suppressor cells and attenuates rheumatoid arthritis in mice. Am J Physiol Cell Physiol 2021; 321:C569-C584. [PMID: 34288720 DOI: 10.1152/ajpcell.00433.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Rheumatoid arthritis (RA) is a debilitating autoimmune disease of unknown cause, characterized by infiltration and accumulation of activated immune cells in the synovial joints where cartilage and bone destructions occur. Myeloid-derived suppressor cells (MDSCs) are of myeloid origin and are able to suppress T cell responses. Src homology 2 domain containing inositol polyphosphate 5-phosphatase 1 (SHIP1) was shown to be involved in the regulation of MDSC differentiation. The purpose of the present study was to investigate the effect of inhibition of SHIP1 on expansion of MDSCs in RA using a collagen-induced inflammatory arthritis (CIA) mouse model. In DBA/1 mice treatment with a small molecule specific SHIP1 inhibitor 3α-aminocholestane (3AC) induced a marked expansion of MDSCs in vivo. Both pre-treatment with 3AC of DBA/1 mice prior to CIA induction and intervention with 3AC during CIA progression significantly reduced disease incidence and severity. Adoptive transfer of MDSCs isolated from 3AC-treated mice, but not naïve MDSCs from normal mice, into CIA mice significantly reduced disease incidence and severity, indicating that the 3AC-induced MDSCs were the cellular mediators of the observed amelioration of the disease. In conclusion, inhibition of SHIP1 expands MDSCs in vivo and attenuates development of CIA in mice. Small molecule specific inhibition of SHIP1 may therefore offer therapeutic benefit to patients with RA and other autoimmune diseases.
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Affiliation(s)
- Eui-Young So
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island, United States
| | - Changqi Sun
- Division of Rheumatology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island, United States
| | - Keith Q Wu
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island, United States
| | - Patrycja M Dubielecka
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island, United States
| | - Anthony M Reginato
- Division of Rheumatology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island, United States
| | - Olin D Liang
- Division of Hematology/Oncology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island, United States
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16
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Thomassen JC, Trojan T, Walz M, Vohlen C, Fink G, Rietschel E, Alejandre Alcazar MA, van Koningsbruggen-Rietschel S. Reduced neutrophil elastase inhibitor elafin and elevated transforming growth factor-β 1 are linked to inflammatory response in sputum of cystic fibrosis patients with Pseudomonas aeruginosa. ERJ Open Res 2021; 7:00636-2020. [PMID: 34291109 PMCID: PMC8287132 DOI: 10.1183/23120541.00636-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 04/19/2021] [Indexed: 11/05/2022] Open
Abstract
Research question Pulmonary disease progression in patients with cystic fibrosis (CF) is characterised by inflammation and fibrosis and aggravated by Pseudomonas aeruginosa (Pa). We investigated the impact of Pa specifically on: 1) protease/antiprotease balance; 2) inflammation; and 3) the link of both parameters to clinical parameters of CF patients. Methods Transforming growth factor-β1 (TGF-β1), interleukin (IL)-1β, IL-8, neutrophil elastase (NE) and elastase inhibitor elafin were measured (ELISA assays), and gene expression of the NF-κB pathway was assessed (reverse transcriptase PCR) in the sputum of 60 CF patients with a minimum age of 5 years. Spirometry was assessed according to American Thoracic Society guidelines. Results Our results demonstrated the following: 1) NE was markedly increased in Pa-positive sputum, whereas elafin was significantly decreased; 2) increased IL-1β/IL-8 levels were associated with both Pa infection and reduced forced expiratory volume in 1 s, and sputum TGF-β1 was elevated in Pa-infected CF patients and linked to an impaired lung function; and 3) gene expression of NF-κB signalling components was increased in sputum of Pa-infected patients, and these findings were positively correlated with IL-8. Conclusion Our study links Pa infection to an imbalance of NE and NE inhibitor elafin and increased inflammatory mediators. Moreover, our data demonstrate an association between high TGF-β1 sputum levels and a progress in chronic lung inflammation and pulmonary fibrosis in CF. Controlling the excessive airway inflammation by inhibition of NE and TGF-β1 might be promising therapeutic strategies in future CF therapy and a possible complement to cystic fibrosis transmembrane conductance regulator (CFTR) modulators.
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Affiliation(s)
- Jan C Thomassen
- CF Center, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany.,Translational Experimental Pediatrics - Experimental Pulmonology, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Tobias Trojan
- CF Center, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Maxine Walz
- CF Center, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Christina Vohlen
- Translational Experimental Pediatrics - Experimental Pulmonology, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany.,Center of Molecular Medicine Cologne, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Gregor Fink
- Translational Experimental Pediatrics - Experimental Pulmonology, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Ernst Rietschel
- CF Center, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Miguel A Alejandre Alcazar
- CF Center, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany.,Translational Experimental Pediatrics - Experimental Pulmonology, Children's Hospital, Faculty of Medicine, University of Cologne, Cologne, Germany.,Center of Molecular Medicine Cologne, Faculty of Medicine, University of Cologne, Cologne, Germany
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17
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Vance JK, Rawson TW, Povroznik JM, Brundage KM, Robinson CM. Myeloid-Derived Suppressor Cells Gain Suppressive Function during Neonatal Bacterial Sepsis. Int J Mol Sci 2021; 22:ijms22137047. [PMID: 34208904 PMCID: PMC8268718 DOI: 10.3390/ijms22137047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 06/27/2021] [Indexed: 11/21/2022] Open
Abstract
Neonates are at an increased risk of an infectious disease. This is consistent with an increased abundance of myeloid-derived suppressor cells (MDSCs) compared with older children and adults. Using a murine model of neonatal bacterial sepsis, we demonstrate that MDSCs modulate their activity during an infection to enhance immune suppressive functions. A gene expression analysis shows that MDSCs increased NOS2, Arg-1 and IL-27p28 expression in vitro and in vivo in response to Escherichia coli O1:K1:H7 and this is regulated at the level of the gene expression. Changes in the effector gene expression are consistent with increased enzymatic activity and cytokine secretion. The neonatal MDSCs express toll-like receptor (TLR) 2, 4 and 5 capable of recognizing pathogen-associated molecular patterns (PAMPS) on E. coli. However, a variable level of effector expression was achieved in response to LPS, peptidoglycan or flagellin. Individual bacterial PAMPs did not stimulate the expression of Arg-l and IL-27p28 equivalently to E. coli. However, the upregulation of NOS2 was achieved in response to LPS, peptidoglycan and flagella. The increased immune suppressive profile translated to an enhanced suppression of CD4+ T cell proliferation. Collectively, these findings increase our understanding of the dynamic nature of MDSC activity and suggest that these cells abundant in early life can acquire activity during an infection that suppresses protective immunity.
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Affiliation(s)
- Jordan K. Vance
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA; (J.K.V.); (T.W.R.); (J.M.P.); (K.M.B.)
| | - Travis W. Rawson
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA; (J.K.V.); (T.W.R.); (J.M.P.); (K.M.B.)
| | - Jessica M. Povroznik
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA; (J.K.V.); (T.W.R.); (J.M.P.); (K.M.B.)
| | - Kathleen M. Brundage
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA; (J.K.V.); (T.W.R.); (J.M.P.); (K.M.B.)
| | - Cory M. Robinson
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA; (J.K.V.); (T.W.R.); (J.M.P.); (K.M.B.)
- Vaccine Development Center, Department of Microbiology, Immunology, and Cell Biology, West Virginia University Health Sciences Center, Morgantown, WV 26506, USA
- Correspondence:
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18
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Rowlands M, Segal F, Hartl D. Myeloid-Derived Suppressor Cells as a Potential Biomarker and Therapeutic Target in COVID-19. Front Immunol 2021; 12:697405. [PMID: 34220859 PMCID: PMC8250151 DOI: 10.3389/fimmu.2021.697405] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/07/2021] [Indexed: 12/11/2022] Open
Abstract
Clinical presentations of COVID-19 are highly variable, yet the precise mechanisms that govern the pathophysiology of different disease courses remain poorly defined. Across the spectrum of disease severity, COVID-19 impairs both innate and adaptive host immune responses by activating innate immune cell recruitment, while resulting in low lymphocyte counts. Recently, several reports have shown that patients with severe COVID-19 exhibit a dysregulated myeloid cell compartment, with increased myeloid-derived suppressor cells (MDSCs) correlating with disease severity. MDSCs, in turn, promote virus survival by suppressing T-cell responses and driving a highly pro-inflammatory state through the secretion of various mediators of immune activation. Here, we summarize the evidence on MDSCs and myeloid cell dysregulation in COVID-19 infection and discuss the potential of MDSCs as biomarkers and therapeutic targets in COVID-19 pneumonia and associated disease.
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Affiliation(s)
- Marianna Rowlands
- Novartis Institutes for BioMedical Research (NIBR) Translational Medicine, Cambridge, MA, United States
| | - Florencia Segal
- Novartis Institutes for BioMedical Research (NIBR) Translational Medicine, Cambridge, MA, United States
| | - Dominik Hartl
- Novartis Institutes for BioMedical Research (NIBR), Translational Medicine, Basel, Switzerland.,Department of Pediatrics I, University of Tübingen, Tübingen, Germany
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19
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De Zuani M, Hortová-Kohoutková M, Andrejčinová I, Tomášková V, Šrámek V, Helán M, Frič J. Human myeloid-derived suppressor cell expansion during sepsis is revealed by unsupervised clustering of flow cytometric data. Eur J Immunol 2021; 51:1785-1791. [PMID: 33788255 PMCID: PMC8360154 DOI: 10.1002/eji.202049141] [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: 12/18/2020] [Revised: 02/24/2021] [Accepted: 03/26/2021] [Indexed: 12/29/2022]
Abstract
Myeloid‐derived suppressor cells (MDSCs) are important regulators of immune processes during sepsis in mice. However, confirming these observations in humans has been challenging due to the lack of defined preparation protocols and phenotyping schemes for MDSC subsets. Thus, it remains unclear how MDSCs are involved in acute sepsis and whether they have a role in the long‐term complications seen in survivors. Here, we combined comprehensive flow cytometry phenotyping with unsupervised clustering using self‐organizing maps to identify the three recently defined human MDSC subsets in blood from severe sepsis patients, long‐term sepsis survivors, and age‐matched controls. We demonstrated the expansion of monocytic M‐MDSCs and polymorphonuclear PMN‐MDSCs, but not early‐stage (e)‐MDSCs during acute sepsis. High levels of PMN‐MDSCs were also present in long‐term survivors many months after discharge, suggesting a possible role in sepsis‐related complications. Altogether, by employing unsupervised clustering of flow cytometric data we have confirmed the likely involvement of human MDSC subsets in acute sepsis, and revealed their expansion in sepsis survivors at late time points. The application of this strategy in future studies and in the clinical/diagnostic context would enable rapid progress toward a full understanding of the roles of MDSC in sepsis and other inflammatory conditions.
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Affiliation(s)
- Marco De Zuani
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | | | - Ivana Andrejčinová
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Veronika Tomášková
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Vladimír Šrámek
- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Martin Helán
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jan Frič
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Modern Immunotherapy, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
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20
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The diverse roles of myeloid derived suppressor cells in mucosal immunity. Cell Immunol 2021; 365:104361. [PMID: 33984533 DOI: 10.1016/j.cellimm.2021.104361] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/21/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022]
Abstract
The mucosal immune system plays a vital role in protecting the host from the external environment. Its major challenge is to balance immune responses against harmful and harmless agents and serve as a 'homeostatic gate keeper'. Myeloid derived suppressor cells (MDSCs) are a heterogeneous population of undifferentiated cells that are characterized by an immunoregulatory and immunosuppressive phenotype. Herein we postulate that MDSCs may be involved in shaping immune responses related to mucosal immunity, due to their immunomodulatory and tissue remodeling functions. Until recently, MDSCs were investigated mainly in cancerous diseases, where they induce and contribute to an immunosuppressive and inflammatory environment that favors tumor development. However, it is now becoming clear that MDSCs participate in non-cancerous conditions such as chronic infections, autoimmune diseases, pregnancy, aging processes and immune tolerance to commensal microbiota at mucosal sites. Since MDSCs are found in the periphery only in small numbers under normal conditions, their role is highlighted during pathologies characterized by acute or chronic inflammation, when they accumulate and become activated. In this review, we describe several aspects of the current knowledge characterizing MDSCs and their involvement in the regulation of the mucosal epithelial barrier, their crosstalk with commensal microbiota and pathogenic microorganisms, and their complex interactions with a variety of surrounding regulatory and effector immune cells. Finally, we discuss the beneficial and harmful outcomes of the MDSC regulatory functions in diseases affecting mucosal tissues. We wish to illuminate the pivotal role of MDSCs in mucosal immunity, the limitations in our understanding of all the players and the intricate challenges stemming from the complex interactions of MDSCs with their environment.
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21
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Lamsfus Calle C, Fendel R, Singh A, Richie TL, Hoffman SL, Kremsner PG, Mordmüller B. Expansion of Functional Myeloid-Derived Suppressor Cells in Controlled Human Malaria Infection. Front Immunol 2021; 12:625712. [PMID: 33815377 PMCID: PMC8017236 DOI: 10.3389/fimmu.2021.625712] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
Malaria can cause life-threatening complications which are often associated with inflammatory reactions. More subtle, but also contributing to the burden of disease are chronic, often subclinical infections, which result in conditions like anemia and immunologic hyporesponsiveness. Although very frequent, such infections are difficult to study in endemic regions because of interaction with concurrent infections and immune responses. In particular, knowledge about mechanisms of malaria-induced immunosuppression is scarce. We measured circulating immune cells by cytometry in healthy, malaria-naïve, adult volunteers undergoing controlled human malaria infection (CHMI) with a focus on potentially immunosuppressive cells. Infectious Plasmodium falciparum (Pf) sporozoites (SPZ) (PfSPZ Challenge) were inoculated during two independent studies to assess malaria vaccine efficacy. Volunteers were followed daily until parasites were detected in the circulation by RT-qPCR. This allowed us to analyze immune responses during pre-patency and at very low parasite densities in malaria-naïve healthy adults. We observed a consistent increase in circulating polymorphonuclear myeloid-derived suppressor cells (PMN-MDSC) in volunteers who developed P. falciparum blood stage parasitemia. The increase was independent of preceding vaccination with a pre-erythrocytic malaria vaccine. PMN-MDSC were functional, they suppressed CD4+ and CD8+ T cell proliferation as shown by ex-vivo co-cultivation with stimulated T cells. PMN-MDSC reduced T cell proliferation upon stimulation by about 50%. Interestingly, high circulating PMN-MDSC numbers were associated with lymphocytopenia. The number of circulating regulatory T cells (Treg) and monocytic MDSC (M-MDSC) showed no significant parasitemia-dependent variation. These results highlight PMN-MDSC in the peripheral circulation as an early indicator of infection during malaria. They suppress CD4+ and CD8+ T cell proliferation in vitro. Their contribution to immunosuppression in vivo in subclinical and uncomplicated malaria will be the subject of further research. Pre-emptive antimalarial pre-treatment of vaccinees to reverse malaria-associated PMN-MDSC immunosuppression could improve vaccine response in exposed individuals.
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Affiliation(s)
| | - Rolf Fendel
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
| | - Anurag Singh
- Department of Pediatrics 1, University Children's Hospital Tübingen, Tübingen, Germany.,Institute for Clinical and Experimental Transfusion Medicine, University Hospital Tübingen, Tübingen, Germany
| | | | | | - Peter G Kremsner
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
| | - Benjamin Mordmüller
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany.,Centre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon
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22
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Older but Not Wiser: the Age-Driven Changes in Neutrophil Responses during Pulmonary Infections. Infect Immun 2021; 89:IAI.00653-20. [PMID: 33495271 DOI: 10.1128/iai.00653-20] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Elderly individuals are at increased risk of life-threatening pulmonary infections. Neutrophils are a key determinant of the disease course of pathogen-induced pneumonia. Optimal host defense balances initial robust pulmonary neutrophil responses to control pathogen numbers, ultimately followed by the resolution of inflammation to prevent pulmonary damage. Recent evidence suggests that phenotypic and functional heterogeneity in neutrophils impacts host resistance to pulmonary pathogens. Apart from their apparent role in innate immunity, neutrophils also orchestrate subsequent adaptive immune responses during infection. Thus, the outcome of pulmonary infections can be shaped by neutrophils. This review summarizes the age-driven impairment of neutrophil responses and the contribution of these cells to the susceptibility of the elderly to pneumonia. We describe how aging is accompanied by changes in neutrophil recruitment, resolution, and function. We discuss how systemic and local changes alter the neutrophil phenotype in aged hosts. We highlight the gap in knowledge of whether these changes in neutrophils also contribute to the decline in adaptive immunity seen with age. We further detail the factors that drive dysregulated neutrophil responses in the elderly and the pathways that may be targeted to rebalance neutrophil activity and boost host resistance to pulmonary infections.
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23
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Seman BG, Vance JK, Akers SM, Robinson CM. Neonatal low-density granulocytes internalize and kill bacteria but suppress monocyte function using extracellular DNA. J Cell Sci 2021; 134:jcs.252528. [PMID: 33589502 DOI: 10.1242/jcs.252528] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 02/01/2021] [Indexed: 12/26/2022] Open
Abstract
Low-density granulocytes (LDGs) are found abundantly in neonatal blood; however, there is limited mechanistic understanding of LDG interactions with bacteria and innate immune cells during acute infection. We aimed to determine how human neonatal LDGs may influence control of the bacterial burden at sites of infection, both individually and in the presence of mononuclear phagocytes. LDGs from human umbilical cord blood do phagocytose Escherichia coli O1:K1:H7 and traffic bacteria into acidic compartments. However, LDGs were significantly less efficient at bacterial uptake and killing compared to monocytes, and this activity was associated with a reduced inflammatory cytokine response. The presence of bacteria triggered the release of DNA (eDNA) from LDGs into the extracellular space that resembled neutrophil extracellular traps, but had limited anti-bacterial activity. Instead, eDNA significantly impaired monocyte control of bacteria during co-culture. These results suggest that LDG recruitment to sites of bacterial infection may compromise host protection in the neonate. Furthermore, our findings reveal novel insights into LDG activity during infection, clarify their inflammatory contributions relative to monocytes, and identify a novel LDG mechanism of immunosuppression.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Brittany G Seman
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA
| | - Jordan K Vance
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA
| | - Stephen M Akers
- Department of Pediatrics, West Virginia University School of Medicine, Morgantown, WV 26506, USA
| | - Cory M Robinson
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, USA .,Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV 26506, USA
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24
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Moser C, Jensen PØ, Thomsen K, Kolpen M, Rybtke M, Lauland AS, Trøstrup H, Tolker-Nielsen T. Immune Responses to Pseudomonas aeruginosa Biofilm Infections. Front Immunol 2021; 12:625597. [PMID: 33692800 PMCID: PMC7937708 DOI: 10.3389/fimmu.2021.625597] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/20/2021] [Indexed: 12/17/2022] Open
Abstract
Pseudomonas aeruginosa is a key pathogen of chronic infections in the lungs of cystic fibrosis patients and in patients suffering from chronic wounds of diverse etiology. In these infections the bacteria congregate in biofilms and cannot be eradicated by standard antibiotic treatment or host immune responses. The persistent biofilms induce a hyper inflammatory state that results in collateral damage of the adjacent host tissue. The host fails to eradicate the biofilm infection, resulting in hindered remodeling and healing. In the present review we describe our current understanding of innate and adaptive immune responses elicited by P. aeruginosa biofilms in cystic fibrosis lung infections and chronic wounds. This includes the mechanisms that are involved in the activation of the immune responses, as well as the effector functions, the antimicrobial components and the associated tissue destruction. The mechanisms by which the biofilms evade immune responses, and potential treatment targets of the immune response are also discussed.
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Affiliation(s)
- Claus Moser
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Peter Østrup Jensen
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.,Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kim Thomsen
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Mette Kolpen
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Morten Rybtke
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anne Sofie Lauland
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Hannah Trøstrup
- Department of Plastic Surgery and Breast Surgery, Zealand University Hospital, Roskilde, Denmark
| | - Tim Tolker-Nielsen
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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25
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Dorhoi A, Kotzé LA, Berzofsky JA, Sui Y, Gabrilovich DI, Garg A, Hafner R, Khader SA, Schaible UE, Kaufmann SH, Walzl G, Lutz MB, Mahon RN, Ostrand-Rosenberg S, Bishai W, du Plessis N. Therapies for tuberculosis and AIDS: myeloid-derived suppressor cells in focus. J Clin Invest 2021; 130:2789-2799. [PMID: 32420917 DOI: 10.1172/jci136288] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The critical role of suppressive myeloid cells in immune regulation has come to the forefront in cancer research, with myeloid-derived suppressor cells (MDSCs) as a main oncology immunotherapeutic target. Recent improvement and standardization of criteria classifying tumor-induced MDSCs have led to unified descriptions and also promoted MDSC research in tuberculosis (TB) and AIDS. Despite convincing evidence on the induction of MDSCs by pathogen-derived molecules and inflammatory mediators in TB and AIDS, very little attention has been given to their therapeutic modulation or roles in vaccination in these diseases. Clinical manifestations in TB are consequences of complex host-pathogen interactions and are substantially affected by HIV infection. Here we summarize the current understanding and knowledge gaps regarding the role of MDSCs in HIV and Mycobacterium tuberculosis (co)infections. We discuss key scientific priorities to enable application of this knowledge to the development of novel strategies to improve vaccine efficacy and/or implementation of enhanced treatment approaches. Building on recent findings and potential for cross-fertilization between oncology and infection biology, we highlight current challenges and untapped opportunities for translating new advances in MDSC research into clinical applications for TB and AIDS.
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Affiliation(s)
- Anca Dorhoi
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany.,Faculty of Mathematics and Natural Sciences, University of Greifswald, Greifswald, Germany
| | - Leigh A Kotzé
- Centre for Tuberculosis Research, South African Medical Research Council, Cape Town, South Africa.,DST-NRF Centre of Excellence for Biomedical Tuberculosis Research (CBTBR) and.,Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Jay A Berzofsky
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Yongjun Sui
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | | | - Ankita Garg
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Richard Hafner
- Division of AIDS, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Shabaana A Khader
- Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Ulrich E Schaible
- Cellular Microbiology, Priority Program Infections.,Thematic Translation Unit Tuberculosis, German Center for Infection Research, and.,Leibniz Research Alliance INFECTIONS'21, Research Center Borstel, Borstel, Germany
| | - Stefan He Kaufmann
- Max Planck Institute for Infection Biology, Berlin, Germany.,Hagler Institute for Advanced Study, Texas A&M University, College Station, Texas, USA
| | - Gerhard Walzl
- Centre for Tuberculosis Research, South African Medical Research Council, Cape Town, South Africa.,DST-NRF Centre of Excellence for Biomedical Tuberculosis Research (CBTBR) and.,Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Manfred B Lutz
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Robert N Mahon
- Division of AIDS, Columbus Technologies & Services Inc., Contractor to National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Suzanne Ostrand-Rosenberg
- Department of Pathology and Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - William Bishai
- Center for Tuberculosis Research, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Nelita du Plessis
- Centre for Tuberculosis Research, South African Medical Research Council, Cape Town, South Africa.,DST-NRF Centre of Excellence for Biomedical Tuberculosis Research (CBTBR) and.,Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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26
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Tucker SL, Sarr D, Rada B. Neutrophil extracellular traps are present in the airways of ENaC-overexpressing mice with cystic fibrosis-like lung disease. BMC Immunol 2021; 22:7. [PMID: 33478382 PMCID: PMC7819174 DOI: 10.1186/s12865-021-00397-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 01/10/2021] [Indexed: 12/13/2022] Open
Abstract
Background Neutrophils are key components of the exacerbated inflammation and tissue damage in cystic fibrosis (CF) airways. Neutrophil extracellular traps (NETs) trap and kill extracellular pathogens. While NETs are abundant in the airways of CF patients and have been hypothesized to contribute to lung damage in CF, the in vivo role of NETs remains controversial, partially due to lack of appropriate animal models. The goal of this study was to detect NETs and to further characterize neutrophil-mediated inflammation in the airways of mice overexpressing the epithelial sodium channel (βENaC-Tg mice on C57BL/6 background) in their lung with CF-like airway disease, in the absence of any apparent bacterial infections. Methods Histology scoring of lung tissues, flow cytometry, multiplex ELISA, immunohistochemistry and immunofluorescence were used to characterize NETs and the airway environment in uninfected, βENaC-Tg mice at 6 and 8 weeks of age, the most chronic time points so far studied in this model. Results Excessive neutrophilic infiltration characterized the lungs of uninfected, βENaC-Tg mice at 6 and 8 weeks of age. The bronchoalveolar lavage fluid (BALF) of βENaC-Tg mice contains increased levels of CF-associated cytokines and chemokines: KC, MIP-1α/β, MCP-1, G-CSF, IL-5, and IL-6. The BALF of βENaC-Tg mice contain MPO-DNA complexes, indicative of the presence of NETs. Immunofluorescence and flow cytometry of BALF neutrophils and lung tissues demonstrated increased histone citrullination, a NET-specific marker, in βENaC-Tg mice. Conclusions NETs are detected in the airways of βENaC-Tg mice, in the absence of bacterial infections. These data demonstrate the usefulness of the βENaC-Tg mouse to serve as a model for studying the role of NETs in chronic CF airway inflammation. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-021-00397-w.
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Affiliation(s)
- Samantha L Tucker
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA
| | - Demba Sarr
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA
| | - Balázs Rada
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA.
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27
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Abstract
Myeloid-derived suppressor cells (MDSC) are a heterogeneous population of cells of myeloid origin. MDSC are functionally defined by their capacity to suppress T, NK, and B cell responses and henceforth altering the disease outcome in various pathological conditions. MDSC are further subdivided into three distinct subsets: monocytic (M-) MDSC, neutrophilic or polymorphonuclear (PMN-) MDSC, and early-stage (e-) MDSC. However, since surface markers utilized to define MDSC are expressed on other myeloid cells too, it is mandatory to functionally assess the suppressive activity for characterizing these cells. Here, we provide a protocol for generation of PMN-MDSC in vitro from freshly isolated human peripheral blood mononuclear cells. These MDSC can be used further to perform functional assays to determine their immunosuppressive potential or test their activities in various biological conditions, for instance in infection and cancer.
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28
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Alpdundar Bulut E, Bayyurt Kocabas B, Yazar V, Aykut G, Guler U, Salih B, Surucu Yilmaz N, Ayanoglu IC, Polat MM, Akcali KC, Gursel I, Gursel M. Human Gut Commensal Membrane Vesicles Modulate Inflammation by Generating M2-like Macrophages and Myeloid-Derived Suppressor Cells. THE JOURNAL OF IMMUNOLOGY 2020; 205:2707-2718. [PMID: 33028617 DOI: 10.4049/jimmunol.2000731] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/09/2020] [Indexed: 12/19/2022]
Abstract
Immunomodulatory commensal bacteria modify host immunity through delivery of regulatory microbial-derived products to host cells. Extracellular membrane vesicles (MVs) secreted from symbiont commensals represent one such transport mechanism. How MVs exert their anti-inflammatory effects or whether their tolerance-inducing potential can be used for therapeutic purposes remains poorly defined. In this study, we show that MVs isolated from the human lactic acid commensal bacteria Pediococcus pentosaceus suppressed Ag-specific humoral and cellular responses. MV treatment of bone marrow-derived macrophages and bone marrow progenitors promoted M2-like macrophage polarization and myeloid-derived suppressor cell differentiation, respectively, most likely in a TLR2-dependent manner. Consistent with their immunomodulatory activity, MV-differentiated cells upregulated expression of IL-10, arginase-1, and PD-L1 and suppressed the proliferation of activated T cells. MVs' anti-inflammatory effects were further tested in acute inflammation models in mice. In carbon tetrachloride-induced fibrosis and zymosan-induced peritonitis models, MVs ameliorated inflammation. In the dextran sodium sulfate-induced acute colitis model, systemic treatment with MVs prevented colon shortening and loss of crypt architecture. In an excisional wound healing model, i.p. MV administration accelerated wound closure through recruitment of PD-L1-expressing myeloid cells to the wound site. Collectively, these results indicate that P. pentosaceus-derived MVs hold promise as therapeutic agents in management/treatment of inflammatory conditions.
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Affiliation(s)
- Esin Alpdundar Bulut
- Department of Biological Sciences, Middle East Technical University, Ankara 06800, Turkey
| | - Banu Bayyurt Kocabas
- Therapeutic Oligodeoxynucleotide Research Laboratory, Department of Molecular Biology and Genetics, Ihsan Dogramaci Bilkent University, Ankara 06800, Turkey
| | - Volkan Yazar
- Therapeutic Oligodeoxynucleotide Research Laboratory, Department of Molecular Biology and Genetics, Ihsan Dogramaci Bilkent University, Ankara 06800, Turkey
| | - Gamze Aykut
- Therapeutic Oligodeoxynucleotide Research Laboratory, Department of Molecular Biology and Genetics, Ihsan Dogramaci Bilkent University, Ankara 06800, Turkey
| | - Ulku Guler
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Bekir Salih
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Naz Surucu Yilmaz
- Department of Biological Sciences, Middle East Technical University, Ankara 06800, Turkey
| | - Ihsan Cihan Ayanoglu
- Department of Biological Sciences, Middle East Technical University, Ankara 06800, Turkey
| | - Muammer Merve Polat
- Department of Medical Genetics, Faculty of Medicine, Yuksek Ihtisas University, Ankara 06520, Turkey; and
| | - Kamil Can Akcali
- Department of Biophysics, Faculty of Medicine, Ankara University, Ankara 06100, Turkey
| | - Ihsan Gursel
- Therapeutic Oligodeoxynucleotide Research Laboratory, Department of Molecular Biology and Genetics, Ihsan Dogramaci Bilkent University, Ankara 06800, Turkey
| | - Mayda Gursel
- Department of Biological Sciences, Middle East Technical University, Ankara 06800, Turkey;
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29
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Ha J, Kim S, Lee J, Lee H, Choi Y, Oh H, Yoon Y, Choi KH. The role of Pseudomonas aeruginosa DesB in pathogen-host interaction. Int Microbiol 2020; 23:549-555. [PMID: 32323095 DOI: 10.1007/s10123-020-00130-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 03/19/2020] [Accepted: 04/13/2020] [Indexed: 11/25/2022]
Abstract
Pseudomonas aeruginosa, commonly found in environments, can cause chronic lung disease in immunocompromised patients. In previous study, an aerobic desaturase (DesB) in P. aeruginosa exerted considerable effects on virulence factor production. The objective of this study was to analyze the role of DesB on the virulence traits of P. aeruginosa in the host. For the in vitro experiments, cells and supernatants from wild-type (WT) P. aeruginosa and its desB mutant were collected. The diluted cells were added to the A549 cell monolayer in order to determine cell viability, invasion ability, and/or immune response. For the in vivo experiments, 6-week-old ICR mice were infected with 6-7 log CFU bacterial cells using endotracheal intubation. The ratio of lung weight to body weight and survival rate of each bacterial strain in the lung were measured. The histopathology of lung tissue was also studied. desB mutants exhibited lower cytotoxicity in A549 cells. In addition, more pro-inflammatory cytokines and chemokines were present in desB mutant-treated. In the lungs of mouse model, WT survived longer than desB mutant, and the WT migrated from the lung to the liver and spleen. The results suggest that P. aeruginosa DesB affects the pathogenicity of the organism in the host.
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Affiliation(s)
- Jimyeong Ha
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Sejeong Kim
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Jeeyeon Lee
- Department of Food and Nutrition, Dong-eui University, Busan, 47340, South Korea
| | - Heeyoung Lee
- Food Standard Research Center, Korea Food Research Institute, Wanju, Jeollabuk-do, 55365, South Korea
| | - Yukyung Choi
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Hyemin Oh
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Yohan Yoon
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310, South Korea
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Kyoung-Hee Choi
- Department of Oral Microbiology, College of Dentistry, Wonkwang University, Iksan, 54538, South Korea.
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30
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Yu L, Pham Q, Yu LL, Wang TTY. Modulation of CXC-motif chemokine receptor 7, but not 4, expression is related to migration of the human prostate cancer cell LNCaP: regulation by androgen and inflammatory stimuli. Inflamm Res 2019; 69:167-178. [PMID: 31865399 DOI: 10.1007/s00011-019-01305-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 11/08/2019] [Accepted: 12/05/2019] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVE To elucidate the regulation, function of the chemokine CXC-motif ligand 12 (CXCL12) and its receptors (CXCR) 4 and 7 in prostate cancer tumor microenvironment. MATERIAL In-silico-analysis of expression in prostate cancer tissues. In-vitro comparison, testing of regulation in human prostate cancer cells LNCaP, DU145, and PC3. TREATMENT Dihydrotestosterone (DHT) treatments (0-10 nM) were for 0-48 h. The inflammatory agent Flagellin treatment (20 ng/ml) was for 2 h. Migration assays were performed for 24 h using 10 ng/ml CXCL12. METHODS Real-time PCR, western analysis, and migration assays were used to determine mRNA, protein, and functional changes, respectively. RESULTS Malignant prostate cancer tissues exhibit higher CXCR4/7 mRNA ratio, and higher CXCR7 mRNA levels were detected in the androgen-responsive LNCaP cells. Putative androgen-responsive elements were identified in CXCR4, 7 gene, and exposure to DHT, flagellin increased CXCR4 mRNA but decreased CXCR7 mRNA levels in LNCaP cells. Androgen receptor siRNA significantly attenuated the effects of DHT on CXCR4, 7 mRNA in LNCaP cells. However, DHT and flagellin only decrease CXCR7 protein and additively increased migration of LNCaP cells towards CXCL12. CONCLUSIONS Down regulation of CXCR7 protein by DHT and flagellin increased migration, supporting CXCR7 as decoy receptor counteracting CXCL12/CXCR4-mediated migration in prostate cancer cells.
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Affiliation(s)
- Lu Yu
- Department of Nutrition and Food Science, University of Maryland, College Park, MD, 20742, USA
| | - Quynhchi Pham
- Diet, Genomics and Immunology Laboratory, Beltsville Human Nutrition Research Center, ARS, USDA, 10300 Baltimore Ave., Bldg. 307C, Rm 132, Beltsville, MD, 20705, USA
| | - Liangli Lucy Yu
- Department of Nutrition and Food Science, University of Maryland, College Park, MD, 20742, USA
| | - Thomas T Y Wang
- Diet, Genomics and Immunology Laboratory, Beltsville Human Nutrition Research Center, ARS, USDA, 10300 Baltimore Ave., Bldg. 307C, Rm 132, Beltsville, MD, 20705, USA.
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31
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Chai YH, Xu JF. How does Pseudomonas aeruginosa affect the progression of bronchiectasis? Clin Microbiol Infect 2019; 26:313-318. [PMID: 31306794 DOI: 10.1016/j.cmi.2019.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/04/2019] [Accepted: 07/08/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND Pseudomonas aeruginosa is one of the most common pathogens isolated from respiratory tract specimen in patients with bronchiectasis. It is considered highly responsible for pathogenicity, progression and clinical outcomes of bronchiectasis. AIMS To summarize existing evidence on how different factors of Pseudomonas aeruginosa affect the pathogenicity, progression and clinical outcomes of bronchiectasis, so as to provide possible insights for clinical practice and related research in the future. SOURCES PubMed was searched for studies pertaining to bronchiectasis and P. aeruginosa published to date, with no specific inclusion or exclusion criteria. Reference lists of retrieved reviews were searched for additional articles. CONTENT This review focused on non-cystic fibrosis bronchiectasis and also provided some data on cystic fibrosis when studies in bronchiectasis were limited. We discussed various factors in relation to P. aeruginosa: virulence factors, drug resistance, regulatory systems, genomic diversity and transmission of P. aeruginosa, as well as treatment for P. aeruginosa. Their impacts on bronchiectasis and its management were discussed. IMPLICATIONS The impact of P. aeruginosa on bronchiectasis is definite, although conclusions in some aspects are still vague. Faced with the worrying drug-resistance status and treatment bottleneck, individualized management and novel therapies beyond the classic pathway are most likely to be a future trend. To confirm the independent or integrated impact of various factors of P. aeruginosa on bronchiectasis and to figure out all the problems mentioned, larger randomized control trials are truly needed in the future.
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Affiliation(s)
- Y-H Chai
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - J-F Xu
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.
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32
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Esher SK, Fidel PL, Noverr MC. Candida/Staphylococcal Polymicrobial Intra-Abdominal Infection: Pathogenesis and Perspectives for a Novel Form of Trained Innate Immunity. J Fungi (Basel) 2019; 5:jof5020037. [PMID: 31075836 PMCID: PMC6617080 DOI: 10.3390/jof5020037] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 01/10/2023] Open
Abstract
Polymicrobial sepsis is difficult to diagnose and treat and causes significant morbidity and mortality, especially when fungi are involved. In vitro, synergism between Candida albicans and various bacterial species has been described for many years. Our laboratory has developed a murine model of polymicrobial intra-abdominal infection with Candida albicans and Staphylococcus aureus, demonstrating that polymicrobial infections cause high levels of mortality, while monoinfections do not. By contrast, closely related Candida dubliniensis does not cause synergistic lethality and rather provides protection against lethal polymicrobial infection. This protection is thought to be driven by a novel form of trained innate immunity mediated by myeloid-derived suppressor cells (MDSCs), which we are proposing to call "trained tolerogenic immunity". MDSC accumulation has been described in patients with sepsis, as well as in in vivo sepsis models. However, clinically, MDSCs are considered detrimental in sepsis, while their role in in vivo models differs depending on the sepsis model and timing. In this review, we will discuss the role of MDSCs in sepsis and infection and summarize our perspectives on their development and function in the spectrum of trained innate immune protection against fungal-bacterial sepsis.
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Affiliation(s)
- Shannon K Esher
- Center of Excellence in Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, LA 70119, USA.
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans, LA 70112, USA.
| | - Paul L Fidel
- Center of Excellence in Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, LA 70119, USA.
| | - Mairi C Noverr
- Center of Excellence in Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, LA 70119, USA.
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans, LA 70112, USA.
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33
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Heigl T, Singh A, Saez-Gimenez B, Kaes J, Van Herck A, Sacreas A, Beeckmans H, Vanstapel A, Verleden SE, Van Raemdonck DE, Verleden G, Vanaudenaerde BM, Hartl D, Vos R. Myeloid-Derived Suppressor Cells in Lung Transplantation. Front Immunol 2019; 10:900. [PMID: 31080450 PMCID: PMC6497753 DOI: 10.3389/fimmu.2019.00900] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/08/2019] [Indexed: 12/19/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSC) are a heterogeneous group of immune cells from the myeloid lineage. MDSCs expand in pathological situations, such as chronic infection, cancer, autoimmunity, and allograft rejection. As chronic lung allograft dysfunction (CLAD) limits long-term survival after lung transplantation (LTx), MDSCs may play a role in its pathophysiology. We assessed phenotype and frequency of MDSCs in peripheral blood from lung transplant recipients and its relationship to post-transplant complications and immunosuppression. Granulocytic (G)-MDSC were identified and quantified by flow cytometry of blood from 4 control subjects and 20 lung transplant patients (stable n = 6, infection n = 5; CLAD n = 9). G-MDSC functionality was assessed in vitro by their capability to block CD4 and CD8 T cell proliferation. More G-MDSC could be assessed using EDTA tubes compared to heparin tubes (p = 0.004). G-MDSC were increased in stable lung transplant recipients vs. non-transplant controls (52.1% vs. 9.4%; p = 0.0095). The infection or CLAD groups had lower G-MDSCs vs. stable recipients (28.2%p = 0.041 and 33.0%; p = 0.088, respectively), but were not different among CLAD phenotypes. G-MDSC tended to correlate with cyclosporine A and tacrolimus levels (r2 = 0.18; r2 = 0.17). CD4 and CD8 cells proliferation decreased by 50 and 80% if co-cultured with MDSCs (1:6 and 1:2 MDSC:T-cell ratio, respectively). In conclusion, circulating MDSCs are measurable, functional and have a G-MDSC phenotype in lung transplant patients. Their frequency is increased in stable patients, decreased during post-transplant complications, and related to level of immunosuppression. This study may pave the way for further investigations of MDSC in the context of lung transplantation.
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Affiliation(s)
- Tobias Heigl
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Anurag Singh
- Universitätsklinik für Kinder-und Jugendmedizin, Tübingen, Germany
| | - Berta Saez-Gimenez
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Janne Kaes
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Anke Van Herck
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Annelore Sacreas
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Hanne Beeckmans
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Arno Vanstapel
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Stijn E Verleden
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Dirk E Van Raemdonck
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Geert Verleden
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Bart M Vanaudenaerde
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Dominik Hartl
- Universitätsklinik für Kinder-und Jugendmedizin, Tübingen, Germany
| | - Robin Vos
- Lung Transplant Unit, Lab of Respiratory Diseases, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
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Interleukin-10 Produced by Myeloid-Derived Suppressor Cells Provides Protection to Carbapenem-Resistant Klebsiella pneumoniae Sequence Type 258 by Enhancing Its Clearance in the Airways. Infect Immun 2019; 87:IAI.00665-18. [PMID: 30804104 DOI: 10.1128/iai.00665-18] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 02/17/2019] [Indexed: 02/06/2023] Open
Abstract
Carbapenem-resistant Klebsiella pneumoniae sequence type 258 (CRKP-ST258) can cause chronic infections in lungs and airways, with repeated episodes of bacteremia. In this report we addressed whether the recruitment of myeloid cells producing the anti-inflammatory cytokine interleukin-10 (IL-10) modulates the clearance of CKRP-ST258 in the lungs and establishes bacterial persistence. Our data demonstrate that during pneumonia caused by a clinical isolate of CRKP-ST258 (KP35) there is an early recruitment of monocyte-myeloid-derived suppressor cells (M-MDSCs) and neutrophils that actively produce IL-10. However, M-MDSCs were the cells that sustained the production of IL-10 over the time of infection evaluated. Using mice unable to produce IL-10 (IL-10-/-), we observed that the production of this cytokine during the infection caused by KP35 is important to control bacterial burden, to prevent lung damage, to modulate cytokine production, and to improve host survival. Importantly, intranasal transfer of bone marrow-derived M-MDSCs from mice able to produce IL-10 at 1 day prior to infection improved the ability of IL-10-/- mice to clear KP35 in the lungs, decreasing their mortality. Altogether, our data demonstrate that IL-10 produced by M-MDSCs is required for bacterial clearance, reduction of lung tissue damage, and host survival during KP35 pneumonia.
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35
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Wang T, Fan C, Yao A, Xu X, Zheng G, You Y, Jiang C, Zhao X, Hou Y, Hung MC, Lin X. The Adaptor Protein CARD9 Protects against Colon Cancer by Restricting Mycobiota-Mediated Expansion of Myeloid-Derived Suppressor Cells. Immunity 2019; 49:504-514.e4. [PMID: 30231984 DOI: 10.1016/j.immuni.2018.08.018] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 03/29/2018] [Accepted: 07/06/2018] [Indexed: 01/19/2023]
Abstract
The adaptor protein CARD9 links detection of fungi by surface receptors to the activation of the NF-κB pathway. Mice deficient in CARD9 exhibit dysbiosis and are more susceptible to colitis. Here we examined the impact of Card9 deficiency in the development of colitis-associated colon cancer (CAC). Treatment of Card9-/- mice with AOM-DSS resulted in increased tumor loads as compared to WT mice and in the accumulation of myeloid-derived suppressor cells (MDSCs) in tumor tissue. The impaired fungicidal functions of Card9-/- macrophages led to increased fungal loads and variation in the overall composition of the intestinal mycobiota, with a notable increase in C. tropicalis. Bone marrow cells incubated with C. tropicalis exhibited MDSC features and suppressive functions. Fluconazole treatment suppressed CAC in Card9-/- mice and was associated with decreased MDSC accumulation. The frequency of MDSCs in tumor tissues of colon cancer patients correlated positively with fungal burden, pointing to the relevance of this regulatory axis in human disease.
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Affiliation(s)
- Tingting Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Department of Molecular and Cellular Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA.
| | - Chaogang Fan
- General Surgery, Jinling Hospital affiliated Medical School, Nanjing University, Nanjing 210093, China
| | - Anran Yao
- The State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Xingwei Xu
- General Surgery, Jinling Hospital affiliated Medical School, Nanjing University, Nanjing 210093, China
| | - Guoxing Zheng
- Institute for Immunology, Tsinghua University School of Medicine, Tsinghua, Beijing 100084, China; Tsinghua University-Peking University Joint Center for Life Sciences, Beijing 100084, China
| | - Yun You
- Department of Molecular and Cellular Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Changying Jiang
- Department of Molecular and Cellular Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xueqiang Zhao
- Institute for Immunology, Tsinghua University School of Medicine, Tsinghua, Beijing 100084, China
| | - Yayi Hou
- The State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xin Lin
- Institute for Immunology, Tsinghua University School of Medicine, Tsinghua, Beijing 100084, China; Tsinghua University-Peking University Joint Center for Life Sciences, Beijing 100084, China.
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36
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Dorhoi A, Glaría E, Garcia-Tellez T, Nieuwenhuizen NE, Zelinskyy G, Favier B, Singh A, Ehrchen J, Gujer C, Münz C, Saraiva M, Sohrabi Y, Sousa AE, Delputte P, Müller-Trutwin M, Valledor AF. MDSCs in infectious diseases: regulation, roles, and readjustment. Cancer Immunol Immunother 2019; 68:673-685. [PMID: 30569204 PMCID: PMC11028159 DOI: 10.1007/s00262-018-2277-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 10/29/2018] [Indexed: 12/24/2022]
Abstract
Many pathogens, ranging from viruses to multicellular parasites, promote expansion of MDSCs, which are myeloid cells that exhibit immunosuppressive features. The roles of MDSCs in infection depend on the class and virulence mechanisms of the pathogen, the stage of the disease, and the pathology associated with the infection. This work compiles evidence supported by functional assays on the roles of different subsets of MDSCs in acute and chronic infections, including pathogen-associated malignancies, and discusses strategies to modulate MDSC dynamics to benefit the host.
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Affiliation(s)
- Anca Dorhoi
- Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493, Greifswald, Insel Riems, Germany.
- Faculty of Mathematics and Natural Sciences, University of Greifswald, Greifswald, Germany.
- Department of Immunology, Max Planck Institute for Infection Biology, Berlin, Germany.
| | - Estibaliz Glaría
- Nuclear Receptor Group, Department of Cell Biology, Physiology and Immunology, School of Biology, University of Barcelona, Av. Diagonal, 643, 3rd floor, 08028, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), Barcelona, Spain
| | | | | | - Gennadiy Zelinskyy
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Benoit Favier
- Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, CEA, Université Paris Sud 11, INSERM U1184, IBJF, Fontenay-aux-Roses, France
| | - Anurag Singh
- University Children's Hospital and Interdisciplinary Center for Infectious Diseases, University of Tübingen, Tübingen, Germany
| | - Jan Ehrchen
- Department of Dermatology, University Hospital Münster, Münster, Germany
| | - Cornelia Gujer
- Viral Immunobiology, Institute of Experimental Immunology, University of Zürich, Zurich, Switzerland
| | - Christian Münz
- Viral Immunobiology, Institute of Experimental Immunology, University of Zürich, Zurich, Switzerland
| | - Margarida Saraiva
- i3S-Instituto de Investigação e Inovação em Saúde, Porto, Portugal
- IBMC, Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Yahya Sohrabi
- Molecular and Translational Cardiology, Department of Cardiovascular Medicine, University Hospital Münster, Münster, Germany
- Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Ana E Sousa
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Peter Delputte
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Antwerp, Belgium
| | | | - Annabel F Valledor
- Nuclear Receptor Group, Department of Cell Biology, Physiology and Immunology, School of Biology, University of Barcelona, Av. Diagonal, 643, 3rd floor, 08028, Barcelona, Spain.
- Institute of Biomedicine of the University of Barcelona (IBUB), Barcelona, Spain.
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37
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Gleave Parson M, Grimmett J, Vance JK, Witt MR, Seman BG, Rawson TW, Lyda L, Labuda C, Jung JY, Bradford SD, Robinson CM. Murine myeloid-derived suppressor cells are a source of elevated levels of interleukin-27 in early life and compromise control of bacterial infection. Immunol Cell Biol 2019; 97:445-456. [PMID: 30575117 DOI: 10.1111/imcb.12224] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/17/2018] [Accepted: 12/17/2018] [Indexed: 12/17/2022]
Abstract
Microbial infections early in life remain a major cause of infant mortality worldwide. This is consistent with immune deficiencies in this population. Interleukin (IL)-27 is suppressive toward a variety of immune cell types, and we have shown that the production of IL-27 is elevated in humans and mice early in life. We hypothesize that elevated levels of IL-27 oppose protective responses to infection during the neonatal period. In this study, we extended previous findings in neonatal mice to identify a population of IL-27 producers that express Gr-1 and were further identified as myeloid-derived suppressor cells (MDSCs) based on the expression of surface markers and functional studies. In neonates, MDSCs are more abundant and contribute to the elevated pool of IL-27 in this population. Although the ability of MDSCs to regulate T lymphocyte activation has been well-studied, sparingly few studies have investigated the influence of MDSCs on innate immune function during bacterial infection. We demonstrate that macrophages are impaired in their ability to control growth of Escherichia coli when cocultured with MDSCs. This bacterium is a significant concern for neonates as a common cause of bacterial sepsis and meningitis. The suppressive effect of MDSCs on macrophage function is mediated by IL-27; inclusion of a reagent to neutralize IL-27 promotes improved control of bacterial growth. Taken together, these results suggest that the increased abundance of MDSCs may contribute to early life susceptibility to infection and further highlight production of IL-27 as a novel MDSC mechanism to suppress immunity.
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Affiliation(s)
- Madeline Gleave Parson
- Biomedical Sciences Department, West Virginia School of Osteopathic Medicine, Lewisburg, WV, USA
| | - Juanita Grimmett
- Biomedical Sciences Department, West Virginia School of Osteopathic Medicine, Lewisburg, WV, USA
| | - Jordan K Vance
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Michelle R Witt
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Brittany G Seman
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Travis W Rawson
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Logan Lyda
- Biomedical Sciences Department, West Virginia School of Osteopathic Medicine, Lewisburg, WV, USA
| | - Christopher Labuda
- Biomedical Sciences Department, West Virginia School of Osteopathic Medicine, Lewisburg, WV, USA
| | - Joo-Yong Jung
- Department of Biology, Briar Cliff University, Sioux City, IA, USA
| | - Shelby D Bradford
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Cory M Robinson
- Department of Microbiology, Immunology, & Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA
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38
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Mulcahy EM, Cooley MA, McGuire H, Asad S, Fazekas de St Groth B, Beggs SA, Roddam LF. Widespread alterations in the peripheral blood innate immune cell profile in cystic fibrosis reflect lung pathology. Immunol Cell Biol 2019; 97:416-426. [PMID: 30633378 DOI: 10.1111/imcb.12230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 07/30/2018] [Accepted: 12/09/2018] [Indexed: 11/26/2022]
Abstract
Cystic fibrosis (CF) is caused by mutations to the CF transmembrane conductance regulator (CFTR) gene. CFTR is known to be expressed on multiple immune cell subtypes, dendritic cells, monocytes/macrophages, neutrophils and lymphocytes. We hypothesized that the lack of CFTR expression on peripheral blood innate immune cells would result in an altered cell profile in the periphery and that this profile would reflect lung pathology. We performed a flow cytometric phenotypic investigation of innate immune cell proportions in peripheral blood collected from 17 CF patients and 15 age-matched healthy controls. We observed significant differences between CF patients and controls in the relative proportions of natural killer (NK) cells, monocytes and their subsets, with significant correlations observed between proportions of NK and monocyte cell subsets and lung function (forced expiratory volume in 1 sec, % predicted; FEV1% predicted) in CF patients. This study demonstrates the widespread nature of immune dysregulation in CF and provides a basis for identification of potential therapeutic targets. Modulation of the distinct CF-related immune cell phenotype identified could also be an important biomarker for evaluating CFTR-targeted drug efficacy.
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Affiliation(s)
- Emily M Mulcahy
- School of Medicine, University of Tasmania, Hobart, TAS, Australia.,Royal Hobart Hospital, Hobart, TAS, Australia
| | | | - Helen McGuire
- Centenary Institute, Newtown, NSW, Australia.,Discipline of Pathology, University of Sydney, Sydney, NSW, Australia
| | | | - Barbara Fazekas de St Groth
- Centenary Institute, Newtown, NSW, Australia.,Discipline of Pathology, University of Sydney, Sydney, NSW, Australia
| | - Sean A Beggs
- School of Medicine, University of Tasmania, Hobart, TAS, Australia.,Royal Hobart Hospital, Hobart, TAS, Australia
| | - Louise F Roddam
- School of Medicine, University of Tasmania, Hobart, TAS, Australia
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39
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Tsukamoto H, Kozakai S, Kobayashi Y, Takanashi R, Aoyagi T, Numasaki M, Ohta S, Tomioka Y. Impaired antigen-specific lymphocyte priming in mice after Toll-like receptor 4 activation via induction of monocytic myeloid-derived suppressor cells. Eur J Immunol 2019; 49:546-563. [PMID: 30671932 DOI: 10.1002/eji.201847805] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 12/19/2018] [Accepted: 01/21/2019] [Indexed: 12/22/2022]
Abstract
In sepsis, the pathology involves a shift from a proinflammatory state toward an immunosuppressive phase. We previously showed that an agonistic anti-TLR4 antibody induced long-term endotoxin tolerance and suppressed antigen-specific secondary IgG production when primed prior to immunization with antigen. These findings led us to speculate that TLR4-induced innate tolerance due to primary infection causes an immunosuppressive pathology in sepsis. Therefore, the mechanism underlying impaired antigen-specific humoral immunity by the TLR4 antibody was investigated. We showed, in a mouse model, that primary antigen-specific IgG responses were impaired in TLR4 antibody-induced tolerized mice, which was the result of reduced numbers of antigen-specific GC B cells and plasma cells. Ovalbumin-specific CD4 and CD8 T-cell responses were impaired in TLR4 antibody-injected OT-I and -II transgenic mice ex vivo. Adoptive transfer studies demonstrated suppression of OVA-specific CD4 and CD8 T-cell responses by the TLR4 antibody in vivo. The TLR4 antibody induced Gr1+ CD11b+ myeloid-derived suppressor cell (MDSC) expansion with suppression of T-cell activation. Monocytic MDSCs were more suppressive and exhibited higher expression of PD-L1 and inducible nitric oxidase compared with granulocytic MDSCs. In conclusion, immune tolerance conferred by TLR4 activation induces the expansion of monocytic MDSCs, which impairs antigen-specific T-cell priming and IgG production.
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Affiliation(s)
- Hiroki Tsukamoto
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai, Japan
| | - Sao Kozakai
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai, Japan
| | - Yohei Kobayashi
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai, Japan
| | - Risako Takanashi
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai, Japan
| | - Takuya Aoyagi
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai, Japan
| | - Muneo Numasaki
- Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Shoichiro Ohta
- Department of Medical Technology and Sciences School of Health Sciences at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan
| | - Yoshihisa Tomioka
- Laboratory of Oncology, Pharmacy Practice and Sciences, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai, Japan
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40
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Chen Y, Armstrong DA, Salas LA, Hazlett HF, Nymon AB, Dessaint JA, Aridgides DS, Mellinger DL, Liu X, Christensen BC, Ashare A. Genome-wide DNA methylation profiling shows a distinct epigenetic signature associated with lung macrophages in cystic fibrosis. Clin Epigenetics 2018; 10:152. [PMID: 30526669 PMCID: PMC6288922 DOI: 10.1186/s13148-018-0580-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 11/06/2018] [Indexed: 11/10/2022] Open
Abstract
Background Lung macrophages are major participants in the pulmonary innate immune response. In the cystic fibrosis (CF) lung, the inability of lung macrophages to successfully regulate the exaggerated inflammatory response suggests dysfunctional innate immune cell function. In this study, we aim to gain insight into innate immune cell dysfunction in CF by investigating alterations in DNA methylation in bronchoalveolar lavage (BAL) cells, composed primarily of lung macrophages of CF subjects compared with healthy controls. All analyses were performed using primary alveolar macrophages from human subjects collected via bronchoalveolar lavage. Epigenome-wide DNA methylation was examined via Illumina MethylationEPIC (850 K) array. Targeted next-generation bisulfite sequencing was used to validate selected differentially methylated CpGs. Methylation-based sample classification was performed using the recursively partitioned mixture model (RPMM) and was tested against sample case-control status. Differentially methylated loci were identified by fitting linear models with adjustment of age, sex, estimated cell type proportions, and repeat measurement. Results RPMM class membership was significantly associated with the CF disease status (P = 0.026). One hundred nine CpG loci were differentially methylated in CF BAL cells (all FDR ≤ 0.1). The majority of differentially methylated loci in CF were hypo-methylated and found within non-promoter CpG islands as well as in putative enhancer regions and DNase hyper-sensitive regions. Conclusions These results support a hypothesis that epigenetic changes, specifically DNA methylation at a multitude of gene loci in lung macrophages, may participate, at least in part, in driving dysfunctional innate immune cells in the CF lung. Electronic supplementary material The online version of this article (10.1186/s13148-018-0580-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Youdinghuan Chen
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - David A Armstrong
- Department of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.
| | - Lucas A Salas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Haley F Hazlett
- Program in Experimental and Molecular Medicine, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - Amanda B Nymon
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - John A Dessaint
- Department of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Daniel S Aridgides
- Department of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Diane L Mellinger
- Department of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Xiaoying Liu
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Brock C Christensen
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.,Department of Community and Family Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Alix Ashare
- Department of Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.,Program in Experimental and Molecular Medicine, Geisel School of Medicine at Dartmouth, Hanover, NH, USA.,Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
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41
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Peñaloza HF, Alvarez D, Muñoz-Durango N, Schultz BM, González PA, Kalergis AM, Bueno SM. The role of myeloid-derived suppressor cells in chronic infectious diseases and the current methodology available for their study. J Leukoc Biol 2018; 105:857-872. [PMID: 30480847 DOI: 10.1002/jlb.mr0618-233r] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 10/07/2018] [Accepted: 10/30/2018] [Indexed: 12/23/2022] Open
Abstract
An effective pathogen has the ability to evade the immune response. The strategies used to achieve this may be based on the direct action of virulence factors or on the induction of host factors. Myeloid-derived suppressor cells (MDSCs) are immune cells with an incredible ability to suppress the inflammatory response, which makes them excellent targets to be exploited by pathogenic bacteria, viruses, or parasites. In this review, we describe the origin and suppressive mechanisms of MDSCs, as well as their role in chronic bacterial, viral, and parasitic infections, where their expansion seems to be essential in the chronicity of the disease. We also analyze the disadvantages of current MDSC depletion strategies and the different in vitro generation methods, which can be useful tools for the deeper study of these cells in the context of microbial infections.
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Affiliation(s)
- Hernán F Peñaloza
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Diana Alvarez
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Natalia Muñoz-Durango
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Bárbara M Schultz
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo A González
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Susan M Bueno
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
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42
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Sunil VR, Vayas KN, Cervelli JA, Ebramova EV, Gow AJ, Goedken M, Malaviya R, Laskin JD, Laskin DL. Protective Role of Surfactant Protein-D Against Lung Injury and Oxidative Stress Induced by Nitrogen Mustard. Toxicol Sci 2018; 166:108-122. [PMID: 30060251 PMCID: PMC6204765 DOI: 10.1093/toxsci/kfy188] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Nitrogen mustard (NM) is a vesicant known to cause acute pulmonary injury which progresses to fibrosis. Macrophages contribute to both of these pathologies. Surfactant protein (SP)-D is a pulmonary collectin that suppresses lung macrophage activity. Herein, we analyzed the effects of loss of SP-D on NM-induced macrophage activation and lung toxicity. Wild-type (WT) and SP-D-/- mice were treated intratracheally with PBS or NM (0.08 mg/kg). Bronchoalveolar lavage (BAL) fluid and tissue were collected 14 days later. In WT mice, NM caused an increase in total SP-D levels in BAL; multiple lower molecular weight forms of SP-D were also identified, consistent with lung injury and oxidative stress. Flow cytometric analysis of BAL cells from NM treated WT mice revealed the presence of proinflammatory and anti-inflammatory macrophages. Whereas loss of SP-D had no effect on numbers of these cells, their activation state, as measured by proinflammatory (iNOS, MMP-9), and anti-inflammatory (MR-1, Ym-1) protein expression, was amplified. Loss of SP-D also exacerbated NM-induced oxidative stress and alveolar epithelial injury, as reflected by increases in heme oxygenase-1 expression, and BAL cell and protein content. This was correlated with alterations in pulmonary mechanics. In NM-treated SP-D-/-, but not WT mice, there was evidence of edema, epithelial hypertrophy and hyperplasia, bronchiectasis, and fibrosis, as well as increases in BAL phospholipid content. These data demonstrate that activated lung macrophages play a role in NM-induced lung injury and oxidative stress. Elucidating mechanisms regulating macrophage activity may be important in developing therapeutics to treat mustard-induced lung injury.
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Affiliation(s)
- Vasanthi R Sunil
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
| | - Kinal N Vayas
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
| | - Jessica A Cervelli
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
| | - Elena V Ebramova
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
| | - Andrew J Gow
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
| | - Michael Goedken
- Department of Environmental and Occupational Health, Research Pathology Services
| | - Rama Malaviya
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
| | - Jeffrey D Laskin
- School of Public Health, Rutgers University, Piscataway, New Jersey 08854
| | - Debra L Laskin
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy
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43
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Stoll H, Ost M, Singh A, Mehling R, Neri D, Schäfer I, Velic A, Macek B, Kretschmer D, Weidenmaier C, Hector A, Handgretinger R, Götz F, Peschel A, Hartl D, Rieber N. Staphylococcal Enterotoxins Dose-Dependently Modulate the Generation of Myeloid-Derived Suppressor Cells. Front Cell Infect Microbiol 2018; 8:321. [PMID: 30271756 PMCID: PMC6146041 DOI: 10.3389/fcimb.2018.00321] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/22/2018] [Indexed: 11/13/2022] Open
Abstract
Staphylococcus aureus is one of the major human bacterial pathogens causing a broad spectrum of serious infections. Myeloid-derived suppressor cells (MDSC) represent an innate immune cell subset capable of regulating host-pathogen interactions, yet their role in the pathogenesis of S. aureus infections remains incompletely defined. The aim of this study was to determine the influence of different S. aureus strains and associated virulence factors on human MDSC generation. Using an in vitro MDSC generation assay we demonstrate that low concentrations of supernatants of different S. aureus strains led to an induction of functional MDSC, whereas increased concentrations, conversely, reduced MDSC numbers. The concentration-dependent reduction of MDSC correlated with T cell proliferation and cytotoxicity. Several findings supported a role for staphylococcal enterotoxins in modulating MDSC generation. Staphylococcal enterotoxins recapitulated concentration-dependent MDSC induction and inhibition, T cell proliferation and cytotoxicity, while an enterotoxin-deficient S. aureus strain largely failed to alter MDSC. Taken together, we identified staphylococcal enterotoxins as main modulators of MDSC generation. The inhibition of MDSC generation by staphylococcal enterotoxins might represent a novel therapeutic target in S. aureus infections and beyond in non-infectious conditions, such as cancer.
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Affiliation(s)
- Hartmut Stoll
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Michael Ost
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Anurag Singh
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Roman Mehling
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Davide Neri
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Iris Schäfer
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Ana Velic
- Proteome Center Tuebingen, Interfaculty Institute for Cell Biology, University of Tuebingen, Tuebingen, Germany
| | - Boris Macek
- Proteome Center Tuebingen, Interfaculty Institute for Cell Biology, University of Tuebingen, Tuebingen, Germany
| | - Dorothee Kretschmer
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Tuebingen, Germany
| | - Christopher Weidenmaier
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Tuebingen, Germany
| | - Andreas Hector
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | | | - Friedrich Götz
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Tuebingen, Germany
| | - Andreas Peschel
- Interfaculty Institute of Microbiology and Infection Medicine, University of Tuebingen, Tuebingen, Germany.,German Centre for Infection Research (DZIF), Partner Site Tuebingen, Tuebingen, Germany
| | - Dominik Hartl
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany.,German Centre for Infection Research (DZIF), Partner Site Tuebingen, Tuebingen, Germany
| | - Nikolaus Rieber
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany.,German Centre for Infection Research (DZIF), Partner Site Tuebingen, Tuebingen, Germany.,Department of Pediatrics, Kinderklinik Muenchen Schwabing, Klinikum Schwabing, StKM GmbH und Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
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44
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Myeloid-Derived Suppressor Cells and Pulmonary Hypertension. Int J Mol Sci 2018; 19:ijms19082277. [PMID: 30081463 PMCID: PMC6121540 DOI: 10.3390/ijms19082277] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 01/04/2023] Open
Abstract
Myeloid–derived suppressor cells (MDSCs) comprised a heterogeneous subset of bone marrow–derived myeloid cells, best studied in cancer research, that are increasingly implicated in the pathogenesis of pulmonary vascular remodeling and the development of pulmonary hypertension. Stem cell transplantation represents one extreme interventional strategy for ablating the myeloid compartment but poses a number of translational challenges. There remains an outstanding need for additional therapeutic targets to impact MDSC function, including the potential to alter interactions with innate and adaptive immune subsets, or alternatively, alter trafficking receptors, metabolic pathways, and transcription factor signaling with readily available and safe drugs. In this review, we summarize the current literature on the role of myeloid cells in the development of pulmonary hypertension, first in pulmonary circulation changes associated with myelodysplastic syndromes, and then by examining intrinsic myeloid cell changes that contribute to disease progression in pulmonary hypertension. We then outline several tractable targets and pathways relevant to pulmonary hypertension via MDSC regulation. Identifying these MDSC-regulated effectors is part of an ongoing effort to impact the field of pulmonary hypertension research through identification of myeloid compartment-specific therapeutic applications in the treatment of pulmonary vasculopathies.
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45
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Bauswein M, Singh A, Ralhan A, Neri D, Fuchs K, Blanz KD, Schäfer I, Hector A, Handgretinger R, Hartl D, Rieber N. Human T cells modulate myeloid-derived suppressor cells through a TNF-α-mediated mechanism. Immunol Lett 2018; 202:31-37. [PMID: 30076856 DOI: 10.1016/j.imlet.2018.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 07/23/2018] [Accepted: 07/31/2018] [Indexed: 01/25/2023]
Abstract
Myeloid-derived suppressor cells (MDSC) represent an innate immune cell subset capable of suppressing T-cell responses in cancer and chronic inflammation. While the effect of MDSC on T cells has been defined thoroughly, the reciprocal impact of T cells on MDSC homeostasis remains poorly understood. Therefore, we comprehensively analyzed the effect of different T-cell subsets on the generation and survival of human MDSC. Using an in vitro MDSC generation assay, we demonstrate that unstimulated CD4+, but not CD8+ T cells, induce polymorphonuclear MDSC (PMN-MDSC) from CD33+ myeloid cells. This effect was dependent on direct cell-cell contact and required TNF-α signaling. Soluble TNF-α was dispensable for PMN-MDSC generation, suggesting that transmembrane TNF-α is involved in that trans-cellular process. Stimulated human CD3+ T cells delayed the apoptosis of PMN-MDSC, which was independent of TNF-α signaling or direct cell-cell contact, but was recapitulated by IL-2. Taken together, our study shows that human T cells modulate MDSC generation and survival through two distinct mechanisms and thereby fine-tune the homeostasis of human MDSC in a regulated manner.
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Affiliation(s)
- Markus Bauswein
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Anurag Singh
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Anjali Ralhan
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Davide Neri
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Katharina Fuchs
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | | | - Iris Schäfer
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | - Andreas Hector
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany
| | | | - Dominik Hartl
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany; Roche Pharma Research & Early Development (pRED), Immunology, Inflammation and Infectious Diseases (I3) Discovery and Translational Area, Roche Innovation Center Basel, Switzerland
| | - Nikolaus Rieber
- Department of Pediatrics I, University of Tuebingen, Tuebingen, Germany; Department of Pediatrics, Kinderklinik Muenchen Schwabing, Klinikum Schwabing, StKM GmbH und Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
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46
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Kasper M, Walscheid K, Laffer B, Bauer D, Busch M, Wildschütz L, Wang B, Loser K, Vogl T, Grajewski RS, Langmann T, Heiligenhaus A. The Phenotype of Monocytes in Anterior Uveitis Depends on the HLA-B27 Status. Front Immunol 2018; 9:1773. [PMID: 30105034 PMCID: PMC6077321 DOI: 10.3389/fimmu.2018.01773] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/18/2018] [Indexed: 11/13/2022] Open
Abstract
HLA-B27 is the allele most frequently associated with human anterior uveitis. The majority of HLA-B27-positive [acute anterior uveitis (AAU)] patients develop clinically distinct symptoms with acute symptomatic onset of flare and a recurrent disease course characterized by a massive cellular ocular infiltrate during uveitis relapse. By contrast, uveitis in HLA-B27-negative [idiopathic anterior uveitis (IAU)] patients tends to develop a clinically less fulminant, more chronic, and typically asymptomatic disease course. To analyze systemic immune responses in the different uveitis entities, we analyzed peripheral blood cells by flow cytometry. In addition, as a pro-inflammatory biomarker serum, S100A8/A9 levels were quantified by ELISA from patients with AAU (n = 27) and IAU (n = 21), and in healthy controls (n = 30). Data were obtained either during active uveitis flare or after 3 months of inactivity. IAU patients showed a transiently increased frequency of CD56- and CD163-positive monocytes and of both granulocytic myeloid-derived suppressor cells and Th17 cells during active uveitis. By contrast, AAU patients showed an elevated frequency of monocytes, activated T cells, and elevated S100A8/A9 serum levels during clinically quiescent disease. The differentially regulated response of both innate and adaptive immune cells in the blood may be related to the clinically distinct characteristics of the two different uveitis entities.
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Affiliation(s)
- Maren Kasper
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany
| | - Karoline Walscheid
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany
| | - Björn Laffer
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany.,University of Duisburg-Essen, Essen, Germany
| | - Dirk Bauer
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany
| | - Martin Busch
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany
| | - Lena Wildschütz
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany
| | - Bo Wang
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany
| | - Karin Loser
- Department of Dermatology, University of Münster, Münster, Germany
| | - Thomas Vogl
- Institute of Immunology at University of Münster, Münster, Germany
| | | | - Thomas Langmann
- Chair of Experimental Immunology of the Eye, Department of Ophthalmology, University of Cologne, Cologne, Germany
| | - Arnd Heiligenhaus
- Department of Ophthalmology and Ophtha-Laboratory at St. Franziskus Hospital, Münster, Germany.,University of Duisburg-Essen, Essen, Germany
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47
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Medina E, Hartl D. Myeloid-Derived Suppressor Cells in Infection: A General Overview. J Innate Immun 2018; 10:407-413. [PMID: 29945134 DOI: 10.1159/000489830] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/23/2018] [Indexed: 01/09/2023] Open
Abstract
After initial infection, the immune response that serves to restrict the invading pathogen needs to be tightly calibrated in order to avoid collateral immunopathological damage. This calibration is performed by specialized suppressor mechanisms, which are capable of dampening overwhelming or unremitting inflammation in order to prevent tissue damage. Myeloid-derived suppressor cells (MDSC) are emerging as key players in counter-balancing inflammatory responses and pathogenesis during infection. However, some pathogens are able to exploit the suppressive activities of MDSC to favor pathogen persistence and chronic infections. In this article, we review the current knowledge about the importance of MDSC in the context of bacterial, virus, parasites, and fungal infections.
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Affiliation(s)
- Eva Medina
- Helmholtz Centre for Infection Research, Infection Immunology Research Group, Braunschweig,
| | - Dominik Hartl
- Children's Hospital, University of Tübingen, Tübingen, Germany
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48
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Köstlin N, Schoetensack C, Schwarz J, Spring B, Marmé A, Goelz R, Brodbeck G, Poets CF, Gille C. Granulocytic Myeloid-Derived Suppressor Cells (GR-MDSC) in Breast Milk (BM); GR-MDSC Accumulate in Human BM and Modulate T-Cell and Monocyte Function. Front Immunol 2018; 9:1098. [PMID: 29868036 PMCID: PMC5966528 DOI: 10.3389/fimmu.2018.01098] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/02/2018] [Indexed: 12/12/2022] Open
Abstract
Nosocomial bacterial infections (NBI) and necrotizing enterocolitis (NEC) are among the main reasons for death in preterm infants. Both are often caused by bacteria coming from the infected infant’s gut and feeding with breast milk (BM) seems beneficial in their pathogenesis. However, mechanisms causing the protective effect of BM are only incompletely understood. Myeloid-derived suppressor cells (MDSC) are myeloid cells with suppressive activity on other immune cells, recently described to play a role in mediating maternal–fetal tolerance during pregnancy and immune adaptation in newborns. Until now, nothing is known about occurrence and function of MDSC in BM. We analyzed MDSC in BM and peripheral blood of breastfeeding mothers and found that granulocytic MDSC, but not monocytic MDSC, accumulate in BM, exhibit an activated phenotype and increased suppressive activity and modulate TLR-expression on monocytes. Furthermore, we found that the lactotrophic hormones prolactin and oxytocin do not induce MDSC from peripheral blood. This is the first study to describe MDSC with immune-modulatory properties in human BM. Our results point toward a role for MDSC in local immune modulation in the gut possibly protecting infants from NBI and NEC.
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Affiliation(s)
- Natascha Köstlin
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Carolin Schoetensack
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Julian Schwarz
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Bärbel Spring
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Alexander Marmé
- Private Practice in Gynecology and Obstetrics, Tuebingen, Germany
| | - Rangmar Goelz
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Gerhard Brodbeck
- Department of Hematology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Christian F Poets
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
| | - Christian Gille
- Department of Neonatology, Tuebingen University Children's Hospital, Tuebingen, Germany
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49
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Grützner EM, Hoffmann T, Wolf E, Gersbacher E, Neizert A, Stirner R, Pauli R, Ulmer A, Brust J, Bogner JR, Jaeger H, Draenert R. Treatment Intensification in HIV-Infected Patients Is Associated With Reduced Frequencies of Regulatory T Cells. Front Immunol 2018; 9:811. [PMID: 29760693 PMCID: PMC5936794 DOI: 10.3389/fimmu.2018.00811] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 04/03/2018] [Indexed: 12/03/2022] Open
Abstract
In untreated HIV infection, the efficacy of T cell responses decreases over the disease course, resulting in disease progression. The reasons for this development are not completely understood. However, immunosuppressive cells are supposedly crucially involved. Treatment strategies to avoid the induction of these cells preserve immune functions and are therefore the object of intense research efforts. In this study, we assessed the effect of treatment intensification [=5-drug antiretroviral therapy (ART)] on the development of suppressive cell subsets. The New Era (NE) study recruited patients with primary HIV infection (PHI) or chronically HIV-infected patients with conventional ART (CHI) and applied an intensified 5-drug regimen containing maraviroc and raltegravir for several years. We compared the frequencies of the immune suppressive cells, namely, the myeloid-derived suppressor cells (MDSCs), regulatory B cells (Bregs), and regulatory T cells (Tregs), of the treatment intensification patients to the control groups, especially to the patients with conventional 3-drug ART, and analyzed the Gag/Nef-specific CD8 T cell responses. There were no differences between PHI and CHI in the NE population (p > 0.11) for any of the studied cell types. Polymorphonuclear myeloid-derived suppressor cell (PMN-MDSC), monocytic myeloid-derived suppressor cell (M-MDSC), and the Breg frequencies were comparable to those of patients with a 3-drug ART. However, the Treg levels were significantly lower in the NE patients than those in 3ART-treated individuals and other control groups (p ≤ 0.0033). The Gag/Nef-specific CD8 T cell response was broader (p = 0.0134) with a higher magnitude (p = 0.026) in the NE population than that in the patients with conventional ART. However, we did not find a correlation between the frequency of the immune suppressive cells and the interferon-gamma+ CD8 T cell response. In the treatment intensification subjects, the frequencies of the immune suppressive cells were comparable or lower than those of the conventional ART-treated subjects, with surprisingly broad HIV-specific CD8 T cell responses, suggesting a preservation of immune function with the applied treatment regimen. Interestingly, these effects were seen in both treatment intensification subpopulations and were not attributed to the start of treatment in primary infection.
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Affiliation(s)
- Eva M Grützner
- Division of Infectious Diseases, Medizinische Klinik und Poliklinik IV, Ludwig Maximilian University of Munich, Munich, Germany.,German Center for Infection Research, Site Munich LMU, Munich, Germany
| | - Tanja Hoffmann
- Division of Infectious Diseases, Medizinische Klinik und Poliklinik IV, Ludwig Maximilian University of Munich, Munich, Germany
| | - Eva Wolf
- MUC Research GmbH, Munich, Germany
| | | | - Ashley Neizert
- Division of Infectious Diseases, Medizinische Klinik und Poliklinik IV, Ludwig Maximilian University of Munich, Munich, Germany
| | - Renate Stirner
- Division of Infectious Diseases, Medizinische Klinik und Poliklinik IV, Ludwig Maximilian University of Munich, Munich, Germany.,German Center for Infection Research, Site Munich LMU, Munich, Germany
| | - Ramona Pauli
- Dr. Med. Werner Becker, Dr. Med. Ramona Pauli, Gemeinschaftspraxis am Isartor, Munich, Germany
| | - Albrecht Ulmer
- Dr. Med. Albrecht Ulmer, Dr. Med. Bernhard Frietsch, Dr. Med Markus Müller, Gemeinschaftspraxis, Stuttgart, Germany
| | | | - Johannes R Bogner
- Division of Infectious Diseases, Medizinische Klinik und Poliklinik IV, Ludwig Maximilian University of Munich, Munich, Germany.,German Center for Infection Research, Site Munich LMU, Munich, Germany
| | - Hans Jaeger
- MVZ Karlsplatz, HIV Research and Clinical Care Centre, Munich, Germany
| | - Rika Draenert
- Division of Infectious Diseases, Medizinische Klinik und Poliklinik IV, Ludwig Maximilian University of Munich, Munich, Germany.,German Center for Infection Research, Site Munich LMU, Munich, Germany
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50
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Wen L, Gong P, Liang C, Shou D, Liu B, Chen Y, Bao C, Chen L, Liu X, Liang T, Gong W. Interplay between myeloid-derived suppressor cells (MDSCs) and Th17 cells: foe or friend? Oncotarget 2018; 7:35490-6. [PMID: 27007054 PMCID: PMC5085246 DOI: 10.18632/oncotarget.8204] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 03/02/2016] [Indexed: 12/25/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) and Th17 cells were first discovered in the fields of cancer and autoimmunity, respectively. In recent years, their activities have been explored in other biological and pathological conditions, such as infective diseases and solid organ transplantation. However, the interplay between MDSCs and Th17 cells and the mechanism of their interaction remain obscure. This review summarized and analyzed the relationship between MDSCs and Th17 cells, both of which participate in tumor, autoimmune disease, infection and other conditions. In tumors, the increase in MDSCs at the tumor site is usually accompanied by the accumulation of Th17 cells. However, their relationship is inconsistent in different tumors. In arthritic mice or rheumatoid arthritis (RA) patients, an increase in MDSCs, which could ameliorate disease symptoms, causes decreased IL-17A gene expression and Th17 cells accumulation. Furthermore, we concluded that the interaction between MDSCs and Th17 cells is mainly mediated by cytokines. However, the mechanisms require further investigation. Determining the details of their interplay will provide a better understanding of immune networks and could lead to the development of immunotherapeutic strategies in the future.
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Affiliation(s)
- Liang Wen
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Ping Gong
- Department of Oncology, First Affiliated Hospital of Shihezi University School of Medicine, Shihezi City, People's Republic of China
| | - Chao Liang
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Dawei Shou
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Baoqing Liu
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Yiwen Chen
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Changqian Bao
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Li Chen
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Xiaowei Liu
- Division of Gastroenterology, Xiangya Second Hospital, Central South University, Hunan, People's Republic of China
| | - Tingbo Liang
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
| | - Weihua Gong
- Department of Surgery, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou City, People's Republic of China
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