1
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Pettinella F, Mariotti B, Lattanzi C, Bruderek K, Donini M, Costa S, Marini O, Iannoto G, Gasperini S, Caveggion E, Castellucci M, Calzetti F, Bianchetto-Aguilera F, Gardiman E, Giani M, Dusi S, Cantini M, Vassanelli A, Pavone D, Milella M, Pilotto S, Biondani P, Höing B, Schleupner MC, Hussain T, Hadaschik B, Kaspar C, Visco C, Tecchio C, Koenderman L, Bazzoni F, Tamassia N, Brandau S, Cassatella MA, Scapini P. Surface CD52, CD84, and PTGER2 mark mature PMN-MDSCs from cancer patients and G-CSF-treated donors. Cell Rep Med 2024; 5:101380. [PMID: 38242120 PMCID: PMC10897522 DOI: 10.1016/j.xcrm.2023.101380] [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: 03/07/2023] [Revised: 08/11/2023] [Accepted: 12/18/2023] [Indexed: 01/21/2024]
Abstract
Precise molecular characterization of circulating polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs) is hampered by their mixed composition of mature and immature cells and lack of specific markers. Here, we focus on mature CD66b+CD10+CD16+CD11b+ PMN-MDSCs (mPMN-MDSCs) from either cancer patients or healthy donors receiving G-CSF for stem cell mobilization (GDs). By RNA sequencing (RNA-seq) experiments, we report the identification of a distinct gene signature shared by the different mPMN-MDSC populations under investigation, also validated in mPMN-MDSCs from GDs and tumor-associated neutrophils (TANs) by single-cell RNA-seq (scRNA-seq) experiments. Analysis of such a gene signature uncovers a specific transcriptional program associated with mPMN-MDSC differentiation and allows us to identify that, in patients with either solid or hematologic tumors and in GDs, CD52, CD84, and prostaglandin E receptor 2 (PTGER2) represent potential mPMN-MDSC-associated markers. Altogether, our findings indicate that mature PMN-MDSCs distinctively undergo specific reprogramming during differentiation and lay the groundwork for selective immunomonitoring, and eventually targeting, of mature PMN-MDSCs.
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Affiliation(s)
- Francesca Pettinella
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Barbara Mariotti
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Chiara Lattanzi
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Kirsten Bruderek
- Research Division, Department of Otorhinolaryngology, University Hospital Essen, 45122 Essen, Germany
| | - Marta Donini
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Sara Costa
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Olivia Marini
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Giulia Iannoto
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Sara Gasperini
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Elena Caveggion
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | | | - Federica Calzetti
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | | | - Elisa Gardiman
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Matteo Giani
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Stefano Dusi
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Maurizio Cantini
- Transfusion Medicine Department, University and Hospital Trust (AOUI), Verona, Italy
| | - Aurora Vassanelli
- Transfusion Medicine Department, University and Hospital Trust (AOUI), Verona, Italy
| | - Denise Pavone
- Transfusion Medicine Department, University and Hospital Trust (AOUI), Verona, Italy
| | - Michele Milella
- Section of Innovation Biomedicine - Oncology Area, Department of Engineering for Innovation Medicine (DIMI), University of Verona, Verona, Italy
| | - Sara Pilotto
- Section of Innovation Biomedicine - Oncology Area, Department of Engineering for Innovation Medicine (DIMI), University of Verona, Verona, Italy
| | - Pamela Biondani
- Section of Oncology, University and Hospital Trust (AOUI) of Verona, Verona, Italy
| | - Benedikt Höing
- Department of Otorhinolaryngology, University Hospital Essen, Essen, Germany
| | | | - Timon Hussain
- Department of Otorhinolaryngology, University Hospital Essen, Essen, Germany
| | - Boris Hadaschik
- Department of Urology, University Hospital Essen, Essen, Germany
| | - Cordelia Kaspar
- Department of Urology, University Hospital Essen, Essen, Germany
| | - Carlo Visco
- Section of Hematology and Bone Marrow Transplant Unit, Department of Engineering for Innovation Medicine (DIMI), University of Verona, Verona, Italy
| | - Cristina Tecchio
- Section of Hematology and Bone Marrow Transplant Unit, Department of Engineering for Innovation Medicine (DIMI), University of Verona, Verona, Italy
| | - Leo Koenderman
- Department of Respiratory Medicine and Center for Translational Immunology, University Medical Center Utrecht, 3584CX Utrecht, the Netherlands
| | - Flavia Bazzoni
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Nicola Tamassia
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy
| | - Sven Brandau
- Research Division, Department of Otorhinolaryngology, University Hospital Essen, 45122 Essen, Germany; German Cancer Consortium, Partner Site Essen-Düsseldorf, Essen, Germany
| | - Marco A Cassatella
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy.
| | - Patrizia Scapini
- Section of General Pathology, Department of Medicine, University of Verona, 37134 Verona, Italy.
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2
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Munshi PN, Rowley SD, Korngold R. Hematopoietic Stem Cell Transplantation for Malignant Diseases. Clin Immunol 2023. [DOI: 10.1016/b978-0-7020-8165-1.00092-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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3
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Tecchio C, Cassatella MA. Uncovering the multifaceted roles played by neutrophils in allogeneic hematopoietic stem cell transplantation. Cell Mol Immunol 2021; 18:905-918. [PMID: 33203938 PMCID: PMC8115169 DOI: 10.1038/s41423-020-00581-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 10/22/2020] [Indexed: 02/07/2023] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (alloHSCT) is a life-saving procedure used for the treatment of selected hematological malignancies, inborn errors of metabolism, and bone marrow failures. The role of neutrophils in alloHSCT has been traditionally evaluated only in the context of their ability to act as a first line of defense against infection. However, recent evidence has highlighted neutrophils as key effectors of innate and adaptive immune responses through a wide array of newly discovered functions. Accordingly, neutrophils are emerging as highly versatile cells that are able to acquire different, often opposite, functional capacities depending on the microenvironment and their differentiation status. Herein, we review the current knowledge on the multiple functions that neutrophils exhibit through the different stages of alloHSCT, from the hematopoietic stem cell (HSC) mobilization in the donor to the immunological reconstitution that occurs in the recipient following HSC infusion. We also discuss the influence exerted on neutrophils by the immunosuppressive drugs delivered in the course of alloHSCT as part of graft-versus-host disease (GVHD) prophylaxis. Finally, the potential involvement of neutrophils in alloHSCT-related complications, such as transplant-associated thrombotic microangiopathy (TA-TMA), acute and chronic GVHD, and cytomegalovirus (CMV) reactivation, is also discussed. Based on the data reviewed herein, the role played by neutrophils in alloHSCT is far greater than a simple antimicrobial role. However, much remains to be investigated in terms of the potential functions that neutrophils might exert during a highly complex procedure such as alloHSCT.
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Affiliation(s)
- Cristina Tecchio
- Department of Medicine, Section of Hematology and Bone Marrow Transplant Unit, University of Verona, Verona, Italy.
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4
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Schmitz V, Tavares IF, Pignataro P, Machado ADM, Pacheco FDS, dos Santos JB, da Silva CO, Sarno EN. Neutrophils in Leprosy. Front Immunol 2019; 10:495. [PMID: 30949168 PMCID: PMC6436181 DOI: 10.3389/fimmu.2019.00495] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/25/2019] [Indexed: 01/13/2023] Open
Abstract
Leprosy is an infectious disease caused by the intracellular bacillus Mycobacterium leprae that mainly affects the skin and peripheral nerves. One of the most intriguing aspects of leprosy is the diversity of its clinical forms. Paucibacillary patients are characterized as having less than five skin lesions and rare bacilli while the lesions in multibacillary patients are disseminated with voluminous bacilli. The chronic course of leprosy is often interrupted by acute episodes of an inflammatory immunological response classified as either reversal reaction or erythema nodosum leprosum (ENL). Although ENL is considered a neutrophilic immune-complex mediated condition, little is known about the direct role of neutrophils in ENL and leprosy disease overall. Recent studies have shown a renewed interest in neutrophilic biology. One of the most interesting recent discoveries was that the neutrophilic population is not homogeneous. Neutrophilic polarization leads to divergent phenotypes (e.g., a pro- and antitumor profile) that are dynamic subpopulations with distinct phenotypical and functional abilities. Moreover, there is emerging evidence indicating that neutrophils expressing CD64 favor systemic inflammation during ENL. In the present review, neutrophilic involvement in leprosy is discussed with a particular focus on ENL and the potential of neutrophils as clinical biomarkers and therapeutic targets.
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Affiliation(s)
- Veronica Schmitz
- Leprosy Laboratory, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | | | - Patricia Pignataro
- Leprosy Laboratory, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
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5
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Cassetta L, Baekkevold ES, Brandau S, Bujko A, Cassatella MA, Dorhoi A, Krieg C, Lin A, Loré K, Marini O, Pollard JW, Roussel M, Scapini P, Umansky V, Adema GJ. Deciphering myeloid-derived suppressor cells: isolation and markers in humans, mice and non-human primates. Cancer Immunol Immunother 2019; 68:687-697. [PMID: 30684003 PMCID: PMC6447515 DOI: 10.1007/s00262-019-02302-2] [Citation(s) in RCA: 151] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 01/11/2019] [Indexed: 12/12/2022]
Abstract
In cancer, infection and inflammation, the immune system's function can be dysregulated. Instead of fighting disease, immune cells may increase pathology and suppress host-protective immune responses. Myeloid cells show high plasticity and adapt to changing conditions and pathological challenges. Despite their relevance in disease pathophysiology, the identity, heterogeneity and biology of myeloid cells is still poorly understood. We will focus on phenotypical and functional markers of one of the key myeloid regulatory subtypes, the myeloid derived suppressor cells (MDSC), in humans, mice and non-human primates. Technical issues regarding the isolation of the cells from tissues and blood, timing and sample handling of MDSC will be detailed. Localization of MDSC in a tissue context is of crucial importance and immunohistochemistry approaches for this purpose are discussed. A minimal antibody panel for MDSC research is provided as part of the Mye-EUNITER COST action. Strategies for the identification of additional markers applying state of the art technologies such as mass cytometry will be highlighted. Such marker sets can be used to study MDSC phenotypes across tissues, diseases as well as species and will be crucial to accelerate MDSC research in health and disease.
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Affiliation(s)
- Luca Cassetta
- MRC Centre for Reproductive Health, Queen's Medical Research Institute, The University of Edinburgh, 47 Little France Crescent, EH16 4TJ, Edinburgh, UK.
| | - Espen S Baekkevold
- Centre for Immune Regulation, Department of Pathology, University of Oslo, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Sven Brandau
- West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Anna Bujko
- Centre for Immune Regulation, Department of Pathology, University of Oslo, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Marco A Cassatella
- Division of General Pathology, Department of Medicine, University of Verona, Verona, Italy
| | - Anca Dorhoi
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, 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
| | - Carsten Krieg
- Department of Microbiology and Immunology, Hollings Cancer Center, Medical University of South Carolina, Charleston, USA
| | - Ang Lin
- Department of Medicine Solna, Immunology and Allergy Unit, Karolinska Institutet, Stockholm, Sweden.,Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Karin Loré
- Department of Medicine Solna, Immunology and Allergy Unit, Karolinska Institutet, Stockholm, Sweden.,Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Olivia Marini
- Division of General Pathology, Department of Medicine, University of Verona, Verona, Italy
| | - Jeffrey W Pollard
- MRC Centre for Reproductive Health, Queen's Medical Research Institute, The University of Edinburgh, 47 Little France Crescent, EH16 4TJ, Edinburgh, UK
| | - Mikael Roussel
- Centre Hospitalier Universitaire, Pôle Biologie, INSERM, UMR U1236, Université Rennes 1, EFS Bretagne, Rennes, France
| | - Patrizia Scapini
- Division of General Pathology, Department of Medicine, University of Verona, Verona, Italy
| | - Viktor Umansky
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Gosse J Adema
- Radiotherapy and OncoImmunology Laboratory, Department of Radiation Oncology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein 28, 6500 HB, Nijmegen, The Netherlands.
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6
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Munshi PN, Rowley SD, Korngold R. Hematopoietic Stem Cell Transplantation for Malignant Diseases. Clin Immunol 2019. [DOI: 10.1016/b978-0-7020-6896-6.00083-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Costa S, Bevilacqua D, Cassatella MA, Scapini P. Recent advances on the crosstalk between neutrophils and B or T lymphocytes. Immunology 2018; 156:23-32. [PMID: 30259972 DOI: 10.1111/imm.13005] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/12/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022] Open
Abstract
An increasing body of literature supports a role for neutrophils as players in the orchestration of adaptive immunity. During acute and chronic inflammatory conditions, neutrophils rapidly migrate not only to sites of inflammation, but also to draining lymph nodes and spleen, where they engage bidirectional interactions with B- and T-lymphocyte subsets. Accordingly, a relevant role of neutrophils in modulating B-cell responses under homeostatic conditions has recently emerged. Moreover, specialized immunoregulatory properties towards B or T cells acquired by distinct neutrophil populations, originating under pathological conditions, have been consistently described. In this article, we summarize the most recent data from human studies and murine models on the ability of neutrophils to modulate adaptive immune responses under physiological and pathological conditions and the mechanisms behind these processes.
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Affiliation(s)
- Sara Costa
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
| | - Dalila Bevilacqua
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
| | - Marco A Cassatella
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
| | - Patrizia Scapini
- Department of Medicine, Section of General Pathology, School of Medicine, University of Verona, Verona, Italy
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8
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Finlay TM, Palmer AL, Ousman SS. Murine neutrophils treated with alphaB-crystallin reduce IL-12p40 production by dendritic cells. Immunology 2018. [PMID: 29532462 DOI: 10.1111/imm.12924] [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] [Indexed: 12/17/2022] Open
Abstract
Neutrophils are essential in the fight against invading pathogens. They utilize antimicrobial effector mechanisms, such as phagocytosis, release of proteases and other antimicrobial products, robust oxidative bursts and neutrophil extracellular traps to combat infections. Neutrophils also modulate immune responses through the production of eicosanoids, cytokines and chemokines, as well as via direct communication with other immune cells. This system of high-intensity offense against pathogens is exquisitely balanced through regulation to limit damage to host tissue. Unfortunately, the control of neutrophils is not failproof. In cases of sterile injury, autoimmunity and even during an infection, neutrophils can cause tissue destruction and become detrimental to the host. For that reason, there is a need to find means to regulate the aberrant activation of these cells. We found that alphaB-crystallin (αBC), a heat-shock protein known to have anti-inflammatory abilities, affects certain properties of mouse neutrophils that subsequently influence the pro-inflammatory state of antigen-presenting cells (APCs). More specifically, αBC mediated small but significant increases in the levels of IL-10 and matrix metalloproteinase 8, and altered hydrogen peroxide secretion by stimulated neutrophils. Further, the heat-shock protein influenced the communication between neutrophils and dendritic cells by decreasing the production of pro-inflammatory cytokines, specifically IL-12p40, by the APCs. αBC could thus contribute to dampening neutrophil inflammatory responses by impacting the effect of neutrophils on other immune cells.
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Affiliation(s)
- Trisha M Finlay
- Department of Neuroscience, University of Calgary, Calgary, AB, Canada.,The Hotchkiss Brain Institute, Calgary, AB, Canada
| | - Alexandra L Palmer
- Department of Neuroscience, University of Calgary, Calgary, AB, Canada.,The Hotchkiss Brain Institute, Calgary, AB, Canada
| | - Shalina S Ousman
- The Hotchkiss Brain Institute, Calgary, AB, Canada.,Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada.,Department of Cell Biology & Anatomy, University of Calgary, Calgary, AB, Canada
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9
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Deniset JF, Kubes P. Neutrophil heterogeneity: Bona fide subsets or polarization states? J Leukoc Biol 2018; 103:829-838. [PMID: 29462505 DOI: 10.1002/jlb.3ri0917-361r] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 12/14/2022] Open
Abstract
Neutrophils are key components of the innate immune system that play important roles during infection, injury, and chronic disease. In recent years, neutrophil heterogeneity has become an emerging focus with accumulating evidence of neutrophil populations with distinct functions under both steady-state and pathologic conditions. Despite these advances, it remains unclear whether these different populations represent bona fide subsets or simply activation/polarization states in response to local cues. In this review, we summarize the varied neutrophils populations that have been described under both basal and during inflammation. We discuss the evidence that supports the existence of neutrophils subsets. Finally, we identify potential gaps in our knowledge that may further advance our current understanding of neutrophil heterogeneity.
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Affiliation(s)
- Justin F Deniset
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Paul Kubes
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada.,Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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10
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Mouchemore KA, Anderson RL, Hamilton JA. Neutrophils, G-CSF and their contribution to breast cancer metastasis. FEBS J 2017; 285:665-679. [PMID: 28834401 DOI: 10.1111/febs.14206] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/03/2017] [Accepted: 08/18/2017] [Indexed: 12/15/2022]
Abstract
Evidence is mounting for a role for neutrophils in breast cancer progression to metastasis. However, the role of G-CSF in neutrophil biology in a cancer setting remains to be defined. Herein we discuss the most recent clinical and experimental evidence for neutrophils and G-CSF in the promotion of metastasis, demonstrating a potential mechanistic link between them. Understanding this link is imperative both for the development of diagnostic tests and for therapies targeting neutrophils to improve the treatment of breast cancer patients with or at risk of developing metastatic disease. As a high neutrophil-to-lymphocyte ratio in patients predicts poor outcome, while mild neutropenia predicts an improved outcome, we urge caution in the use of G-CSF in neutrophil recovery following chemotherapy as there is increasing evidence in preclinical models that G-CSF can promote metastasis.
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Affiliation(s)
- Kellie A Mouchemore
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia
| | - Robin L Anderson
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,La Trobe University School of Cancer Medicine, Bundoora, Victoria, Australia
| | - John A Hamilton
- Arthritis and Inflammation Research Centre, Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia
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11
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Zhao S, Gu Z, Wang L, Guan L, Wang F, Yang N, Luo L, Gao Z, Song Y, Wang L, Liu D, Gao C. G-CSF inhibits LFA-1-mediated CD4 + T cell functions by inhibiting Lck and ZAP-70. Oncotarget 2017; 8:51578-51590. [PMID: 28881670 PMCID: PMC5584271 DOI: 10.18632/oncotarget.18194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 05/06/2017] [Indexed: 11/25/2022] Open
Abstract
In this study, we showed that G-CSF mobilization increased the frequency of T cells, specifically CD3+CD4+ T cells. G-CSF mobilization decreased the secretion of inflammatory cytokines of CD4+ T cells through the LFA-1/ICAM-1 signaling pathway, whereas it did not alter the TH1/TH2 ratio. We found that G-CSF mobilization inhibited LFA-1-mediated CD4+ T cell polarization and motility. In vitro, G-CSF stimulation also attenuated the polarization and adhesiveness of CD4+ T cells through the LFA-1/ICAM-1 interaction. Further investigation revealed that G-CSF mobilization suppressed LFA-1 signaling by down-regulating Lck and ZAP-70 expression in CD4+ T cells, similar results was also confirmed by in-vitro studies. These findings suggested that G-CSF directly suppressed LFA-1-mediated CD4+ T cell functions through the down-regulation of Lck and ZAP-70. The immunosuppressive effect of G-CSF mobilization deepened our understanding about peripheral blood hematopoietic stem cell transplantation. LFA-1/ICMA-1 pathway may become a potential target for graft-versus-host disease prophylaxis.
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Affiliation(s)
- Shasha Zhao
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China.,Medical School, Nankai University, Tianjin 300071, China
| | - Zhenyang Gu
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Li Wang
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China.,Department of Hematology and Oncology, Laoshan Branch, No. 401 Hospital of Chinese PLA, Qingdao 266101, China
| | - Lixun Guan
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Feiyan Wang
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Nan Yang
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Lan Luo
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhe Gao
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Yingwei Song
- Department of Blood Transfusion, Chinese PLA General Hospital, Beijing 100853, China
| | - Lili Wang
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Daihong Liu
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
| | - Chunji Gao
- Department of Hematology, Chinese PLA General Hospital, Beijing 100853, China
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12
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Scapini P, Marini O, Tecchio C, Cassatella MA. Human neutrophils in the saga of cellular heterogeneity: insights and open questions. Immunol Rev 2017; 273:48-60. [PMID: 27558327 DOI: 10.1111/imr.12448] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent findings have uncovered novel fascinating aspects of the biology of neutrophils, which ultimately attribute to these cells a broader role in inflammation and immunity. One aspect that is currently under intensive investigation is the notion of neutrophil 'heterogeneity'. Studies examining neutrophils in a variety of acute and chronic inflammatory conditions report, in fact, the recovery of CD66b(+) cells displaying neutrophil-like morphology at different degrees of maturation/activation, able to exert either immunosuppressive or proinflammatory properties. These heterogeneous populations of mature and immature neutrophils are indicated with a variety of names, including 'low density neutrophils (LDNs)', 'low density granulocytes (LDGs)', 'granulocytic-myeloid derived suppressor cells (G-MDSCs)', and immunosuppressive neutrophils. However, due to the lack of discrete markers that can unequivocally allow their specific identification and isolation, the precise phenotype and function of all these presumably novel, neutrophil-like, populations have not been correctly defined yet. Aim of this article is to summarize current knowledge on the mature and immature neutrophil populations described to date, featuring immunosuppressive or proinflammatory properties, often defined as 'subsets', as well as to critically discuss unresolved issues in the field.
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Affiliation(s)
- Patrizia Scapini
- Division of General Pathology, University of Verona, Verona, Italy
| | - Olivia Marini
- Division of General Pathology, University of Verona, Verona, Italy
| | - Cristina Tecchio
- Division of Hematology and Bone Marrow Transplant Unit, University of Verona, Verona, Italy
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13
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Mature CD10+ and immature CD10− neutrophils present in G-CSF–treated donors display opposite effects on T cells. Blood 2017; 129:1343-1356. [DOI: 10.1182/blood-2016-04-713206] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 12/19/2016] [Indexed: 01/02/2023] Open
Abstract
Key Points
CD10 as a marker discriminating mature from immature neutrophils within heterogeneous neutrophil populations in pathological settings. Immunosuppressive mature CD66b+CD10+ and immunostimulatory immature CD66b+CD10− neutrophils coexist in G-CSF–treated donors.
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14
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Perobelli SM, Mercadante ACT, Galvani RG, Gonçalves-Silva T, Alves APG, Pereira-Neves A, Benchimol M, Nóbrega A, Bonomo A. G-CSF-Induced Suppressor IL-10+ Neutrophils Promote Regulatory T Cells That Inhibit Graft-Versus-Host Disease in a Long-Lasting and Specific Way. THE JOURNAL OF IMMUNOLOGY 2016; 197:3725-3734. [PMID: 27707998 DOI: 10.4049/jimmunol.1502023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 09/06/2016] [Indexed: 01/13/2023]
Abstract
Acute graft-versus-host disease (aGVHD) is the main complication of allogeneic hematopoietic stem cell transplantation, and many efforts have been made to overcome this important limitation. We showed previously that G-CSF treatment generates low-density splenic granulocytes that inhibit experimental aGVHD. In this article, we show that aGVHD protection relies on incoming IL-10+ neutrophils from G-CSF-treated donor spleen (G-Neutrophils). These G-Neutrophils have high phagocytic capacity, high peroxide production, low myeloperoxidase activity, and low cytoplasmic granule content, which accounts for their low density. Furthermore, they have low expression of MHC class II, costimulatory molecules, and low arginase1 expression. Also, they have low IFN-γ, IL-17F, IL-2, and IL-12 levels, with increased IL-10 production and NO synthase 2 expression. These features are in accordance with the modulatory capacity of G-Neutrophils on regulatory T cell (Treg) generation. In vivo, CD25+ Treg depletion shortly after transplantation with splenic cells from G-CSF-treated donors blocks suppression of aGVHD, suggesting Treg involvement in the protection induced by the G-Neutrophils. The immunocompetence and specificity of the semiallogeneic T cells, long-term after the bone marrow transplant using G-Neutrophils, were confirmed by third-party skin graft rejection; importantly, a graft-versus-leukemia assay showed that T cell activity was maintained, and all of the leukemic cells were eliminated. We conclude that G-CSF treatment generates a population of activated and suppressive G-Neutrophils that reduces aGVHD in an IL-10- and Treg-dependent manner, while maintaining immunocompetence and the graft versus leukemia effect.
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Affiliation(s)
- Suelen Martins Perobelli
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil.,Divisão de Medicina Experimental, Instituto Nacional de Câncer, Rio de Janeiro 20231-050, Brazil.,Laboratório de Pesquisa Sobre o Timo, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro 21040-360, Brazil
| | | | - Rômulo Gonçalves Galvani
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil.,Divisão de Medicina Experimental, Instituto Nacional de Câncer, Rio de Janeiro 20231-050, Brazil.,Laboratório de Pesquisa Sobre o Timo, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro 21040-360, Brazil
| | - Triciana Gonçalves-Silva
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil.,Divisão de Medicina Experimental, Instituto Nacional de Câncer, Rio de Janeiro 20231-050, Brazil.,Laboratório de Pesquisa Sobre o Timo, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro 21040-360, Brazil
| | - Ana Paula Gregório Alves
- Divisão de Medicina Experimental, Instituto Nacional de Câncer, Rio de Janeiro 20231-050, Brazil
| | - Antonio Pereira-Neves
- Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil.,Departamento de Microbiologia, FIOCRUZ Pernambuco, Pernambuco 50670-420, Brazil
| | - Marlene Benchimol
- Universidade do Grande, Rio de Janeiro 25071-202, Brazil.,Instituto Nacional de Biologia Estrutural e Bioimagem da Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil; and
| | - Alberto Nóbrega
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil
| | - Adriana Bonomo
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil; .,Divisão de Medicina Experimental, Instituto Nacional de Câncer, Rio de Janeiro 20231-050, Brazil.,Laboratório de Pesquisa Sobre o Timo, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro 21040-360, Brazil.,Programa FIOCancer, Vice Presidência de Pesquisa e Laboratórios de Referência/FIOCRUZ, Rio de Janeiro 21040-360, Brazil
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15
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Perobelli SM, Galvani RG, Gonçalves-Silva T, Xavier CR, Nóbrega A, Bonomo A. Plasticity of neutrophils reveals modulatory capacity. ACTA ACUST UNITED AC 2015; 48:665-75. [PMID: 26108096 PMCID: PMC4541684 DOI: 10.1590/1414-431x20154524] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 03/17/2015] [Indexed: 12/22/2022]
Abstract
Neutrophils are widely known as proinflammatory cells associated with tissue damage
and for their early arrival at sites of infection, where they exert their phagocytic
activity, release their granule contents, and subsequently die. However, this view
has been challenged by emerging evidence that neutrophils have other activities and
are not so short-lived. Following activation, neutrophil effector functions include
production and release of granule contents, reactive oxygen species (ROS), and
neutrophil extracellular traps (NETs). Neutrophils have also been shown to produce a
wide range of cytokines that have pro- or anti-inflammatory activity, adding a
modulatory role for this cell, previously known as a suicide effector. The presence
of cytokines almost always implies intercellular modulation, potentially unmasking
interactions of neutrophils with other immune cells. In fact, neutrophils have been
found to help B cells and to modulate dendritic cell (DC), macrophage, and T-cell
activities. In this review, we describe some ways in which neutrophils influence the
inflammatory environment in infection, cancer, and autoimmunity, regulating both
innate and adaptive immune responses. These cells can switch phenotypes and exert
functions beyond cytotoxicity against invading pathogens, extending the view of
neutrophils beyond suicide effectors to include functions as regulatory and
suppressor cells.
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Affiliation(s)
- S M Perobelli
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - R G Galvani
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - T Gonçalves-Silva
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - C R Xavier
- Departamento de Ciência da Computação, Universidade Federal de São João Del Rei, São João Del Rei, MG, Brasil
| | - A Nóbrega
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - A Bonomo
- Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
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16
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Inhibition of the lymphocyte metabolic switch by the oxidative burst of human neutrophils. Clin Sci (Lond) 2015; 129:489-504. [PMID: 25951298 DOI: 10.1042/cs20140852] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 05/07/2015] [Indexed: 01/09/2023]
Abstract
Activation of the phagocytic NADPH oxidase-2 (NOX-2) in neutrophils is a critical process in the innate immune system and is associated with elevated local concentrations of superoxide, hydrogen peroxide (H2O2) and hypochlorous acid. Under pathological conditions, NOX-2 activity has been implicated in the development of autoimmunity, indicating a role in modulating lymphocyte effector function. Notably, T-cell clonal expansion and subsequent cytokine production requires a metabolic switch from mitochondrial respiration to aerobic glycolysis. Previous studies demonstrate that H2O2 generated from activated neutrophils suppresses lymphocyte activation but the mechanism is unknown. We hypothesized that activated neutrophils would prevent the metabolic switch and suppress the effector functions of T-cells through a H2O2-dependent mechanism. To test this, we developed a model co-culture system using freshly isolated neutrophils and lymphocytes from healthy human donors. Extracellular flux analysis was used to assess mitochondrial and glycolytic activity and FACS analysis to assess immune function. The neutrophil oxidative burst significantly inhibited the induction of lymphocyte aerobic glycolysis, caused inhibition of oxidative phosphorylation and suppressed lymphocyte activation through a H2O2-dependent mechanism. Hydrogen peroxide and a redox cycling agent, DMNQ, were used to confirm the impact of H2O2 on lymphocyte bioenergetics. In summary, we have shown that the lymphocyte metabolic switch from mitochondrial respiration to glycolysis is prevented by the oxidative burst of neutrophils. This direct inhibition of the metabolic switch is then a likely mechanism underlying the neutrophil-dependent suppression of T-cell effector function.
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17
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Abstract
It is now widely recognized that neutrophils are highly versatile and sophisticated cells that display de novo synthetic capacity and may greatly extend their lifespan. In addition, concepts such as "neutrophil heterogeneity" and "neutrophil plasticity" have started to emerge, implying that, under pathological conditions, neutrophils may differentiate into discrete subsets defined by distinct phenotypic and functional profiles. A number of studies have shown that neutrophils act as effectors in both innate and adaptive immunoregulatory networks. In fact, once recruited into inflamed tissues, neutrophils engage into complex bidirectional interactions with macrophages, natural killer, dendritic and mesenchymal stem cells, B and T lymphocytes, or platelets. As a result of this cross-talk, mediated either by contact-dependent mechanisms or cell-derived soluble factors, neutrophils and target cells reciprocally modulate their survival and activation status. Altogether, these novel aspects of neutrophil biology have shed new light not only on the potential complex roles that neutrophils play during inflammation and immune responses, but also in the pathogenesis of several inflammatory disorders including infection, autoimmunity, and cancer.
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18
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Rowley SD, Friedman T, Korngold R. Hematopoietic stem cell transplantation for malignant diseases. Clin Immunol 2013. [DOI: 10.1016/b978-0-7234-3691-1.00097-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Luyckx A, Schouppe E, Rutgeerts O, Lenaerts C, Fevery S, Devos T, Dierickx D, Waer M, Van Ginderachter JA, Billiau AD. G-CSF stem cell mobilization in human donors induces polymorphonuclear and mononuclear myeloid-derived suppressor cells. Clin Immunol 2012; 143:83-7. [PMID: 22341087 DOI: 10.1016/j.clim.2012.01.011] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 01/19/2012] [Accepted: 01/23/2012] [Indexed: 10/14/2022]
Abstract
The role of myeloid-derived suppressor cells (MDSC) is emerging in transplantation. An expansion of myeloid progenitor cells with suppressive capacity has been reported to occur as a bystander phenomenon in the course of allogeneic hematopoietic stem cell transplantation (allo-HSCT) protocols, particularly, in mice during bone marrow chimerism induction and in human stem cell donors during G-CSF-mobilization protocols. Hypothesizing that such 'regulatory myeloid cells' play a role in regulating post-transplant T-cell alloreactivity, we performed a phenotypical and functional characterization of these cells in peripheral blood stem cell grafts of G-CSF-treated donors. We demonstrate that expanding myeloid cells in the peripheral blood of G-CSF-mobilized donors comprise the typical phenotype of the mononuclear and polymorphonuclear MDSC-subtypes that were recently described in cancer patients, and that both MDSC-subsets have the capacity to regulate alloreactive T-cell responses in-vitro. This study provides the basis for investigating the clinical relevance of MDSC and MDSC-subtypes in human allo-HSCT.
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Affiliation(s)
- Ariane Luyckx
- Laboratory of Experimental Transplantation, University of Leuven, Leuven, Belgium
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20
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Subset characterization of myeloid-derived suppressor cells arising during induction of BM chimerism in mice. Bone Marrow Transplant 2011; 47:985-92. [DOI: 10.1038/bmt.2011.207] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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21
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Queto T, Vasconcelos ZF, Luz RA, Anselmo C, Guiné AAA, Silva PMRE, Farache J, Cunha JMT, Bonomo AC, Gaspar-Elsas MIC, Xavier-Elsas P. G-CSF suppresses allergic pulmonary inflammation, downmodulating cytokine, chemokine and eosinophil production. Life Sci 2011; 88:830-8. [DOI: 10.1016/j.lfs.2011.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 02/10/2011] [Accepted: 03/02/2011] [Indexed: 01/16/2023]
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22
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Müller I, Munder M, Kropf P, Hänsch GM. Polymorphonuclear neutrophils and T lymphocytes: strange bedfellows or brothers in arms? Trends Immunol 2009; 30:522-30. [PMID: 19775938 DOI: 10.1016/j.it.2009.07.007] [Citation(s) in RCA: 189] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 06/26/2009] [Accepted: 07/01/2009] [Indexed: 12/12/2022]
Abstract
Polymorphonuclear neutrophils (PMN) are linked invariably to the innate immune response, particularly to the defence against bacterial infection. T lymphocytes are studied mainly in virus infections, the defence against tumours, the development and progression of chronic inflammatory processes, in autoimmune phenomena and in materno-fetal tolerance. There is, however, increasing evidence for communication and interactions between PMN and T cells that we discuss here in the context of different physiological and pathological conditions, including acute and chronic inflammatory disease, defence against tumours, and maintenance of pregnancy.
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Affiliation(s)
- Ingrid Müller
- Department of Immunology, Faculty of Medicine, Imperial College London, London W2 1PG, UK
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23
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Joo YD, Lee SM, Lee SW, Lee WS, Lee SM, Park JK, Choi IW, Park SG, Choi I, Seo SK. Granulocyte colony-stimulating factor-induced immature myeloid cells inhibit acute graft-versus-host disease lethality through an indoleamine dioxygenase-independent mechanism. Immunology 2009; 128:e632-40. [PMID: 19740324 DOI: 10.1111/j.1365-2567.2009.03048.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Granulocyte colony-stimulating factor (G-CSF)-mobilized donor graft tissue used for peripheral blood stem cell transplantation contains a large number of immature myeloid cells that suppress alloreactive donor T cells, resulting in an inhibition of acute graft-versus-host disease (GVHD). However, the molecular mechanism underlying the suppressive function of immature myeloid cells is not fully understood. Here, we investigated whether indoleamine 2,3-dioxygenase (IDO) is related to the suppressive mechanism of G-CSF-induced immature myeloid cells (gMCs). We found that Gr-1(+) CD11b(+) cells were highly induced in G-CSF-injected donor graft tissue, which is a phenotype of immature myeloid cells, resulting in an inhibition of acute GVHD lethality by suppressing alloreactive donor T-cell expansion. IDO was not detected in primary isolated gMCs; however, this enzyme was markedly induced after treatment with interferon-gamma (IFN-gamma). This level was significantly higher in IFN-gamma-treated gMCs than in bone marrow myeloid cells, which promote alloreactive T-cell responses. We next investigated the functional role of IDO in gMC-mediated inhibition of acute GVHD lethality. We found no changes in gMC-mediated survival or alloreactive donor T-cell suppression when IDO activity was blocked using 1-methyl tryptophan. In addition, there was no difference in gMC-mediated survival rates between recipients transferred with either wild-type gMCs or IDO(-/-) gMCs. Taken together, our data suggest that gMC-mediated inhibition of lethal acute GVHD is through an IDO-independent mechanism.
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Affiliation(s)
- Young-Don Joo
- Department of Hemato/Oncology, Busan Paik Hospital, College of Medicine, Inje University, Busan, Korea
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24
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Identification of discrete tumor-induced myeloid-derived suppressor cell subpopulations with distinct T cell-suppressive activity. Blood 2008; 111:4233-44. [PMID: 18272812 DOI: 10.1182/blood-2007-07-099226] [Citation(s) in RCA: 941] [Impact Index Per Article: 58.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The induction of CD11b(+)Gr-1(+) myeloid-derived suppressor cells (MDSCs) is an important immune-evading mechanism used by tumors. However, the exact nature and function of MDSCs remain elusive, especially because they constitute a heterogeneous population that has not yet been clearly defined. Here, we identified 2 distinct MDSC subfractions with clear morphologic, molecular, and functional differences. These fractions consisted of either mononuclear cells (MO-MDSCs), resembling inflammatory monocytes, or low-density polymorphonuclear cells (PMN-MDSCs), akin to immature neutrophils. Interestingly, both MO-MDSCs and PMN-MDSCs suppressed antigen-specific T-cell responses, albeit using distinct effector molecules and signaling pathways. Blocking IFN-gamma or disrupting STAT1 partially impaired suppression by MO-MDSCs, for which nitric oxide (NO) was one of the mediators. In contrast, while IFN-gamma was strictly required for the suppressor function of PMN-MDSCs, this did not rely on STAT1 signaling or NO production. Finally, MO-MDSCs were shown to be potential precursors of highly antiproliferative NO-producing mature macrophages. However, distinct tumors differentially regulated this inherent MO-MDSC differentiation program, indicating that this phenomenon was tumor driven. Overall, our data refine tumor-induced MDSC functions by uncovering mechanistically distinct MDSC subpopulations, potentially relevant for MDSC-targeted therapies.
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25
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Hematopoietic stem cell transplantation for malignant diseases. Clin Immunol 2008. [DOI: 10.1016/b978-0-323-04404-2.10082-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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De Rose R, Taylor EL, Law MG, van der Meide PH, Kent SJ. Granulocyte contamination dramatically inhibits spot formation in AIDS virus-specific ELISpot assays: analysis and strategies to ameliorate. J Immunol Methods 2005; 297:177-86. [PMID: 15777941 DOI: 10.1016/j.jim.2004.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2004] [Revised: 12/06/2004] [Accepted: 12/08/2004] [Indexed: 12/20/2022]
Abstract
The interferon-gamma (IFNgamma) ELISpot assay has become the most critical tool for HIV vaccine evaluation. External factors affecting ELISpot results must be minimized for the data to be reliably used in vaccine research and development processes. In pre-clinical pigtail macaque studies analyzing HIV/SIV vaccine studies, we detected a strong correlation between levels of granulocytes contaminating PBMC preparations and reduction in the quality and quantity of spots in the IFNgamma ELISpot assay. Acute SHIV infection of macaques worsened granulocyte contamination of PBMC fractions and made the assay much less reliable in detecting SIV-specific T cell immunity compared to intracellular cytokine staining (ICS). This problem could be ameliorated by using an F(ab)(2) form of the MD-1 IFNgamma capture antibody, presumably reflecting that activation of granulocytes in the well by the Fc portion of the standard capture antibody disrupts spot formation. Improving the standard ELISpot assay by using an F(ab)(2) capture antibody should make it more reliable for use in critical vaccine development studies.
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Affiliation(s)
- Robert De Rose
- Department of Microbiology and Immunology, University of Melbourne, Royal Parade, Parkville, Victoria 3010, Australia.
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27
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Liu WM, Baird R, Sarker D, Powles T. Antiapoptotic effect of growth factors in leukemia. J Clin Oncol 2005; 23:649; author reply 649-50. [PMID: 15659515 DOI: 10.1200/jco.2005.05.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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