1
|
Nhamoyebonde S, Chambers M, Ndlovu L, Karim F, Mazibuko M, Mhlane Z, Madziwa L, Moosa Y, Moodley S, Hoque M, Leslie A. Detailed phenotyping reveals diverse and highly skewed neutrophil subsets in both the blood and airways during active tuberculosis infection. Front Immunol 2024; 15:1422836. [PMID: 38947330 PMCID: PMC11212598 DOI: 10.3389/fimmu.2024.1422836] [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: 04/24/2024] [Accepted: 05/21/2024] [Indexed: 07/02/2024] Open
Abstract
Introduction Neutrophils play a complex and important role in the immunopathology of TB. Data suggest they are protective during early infection but become a main driver of immunopathology if infection progresses to active disease. Neutrophils are now recognized to exist in functionally diverse states, but little work has been done on how neutrophil states or subsets are skewed in TB disease. Methods To address this, we carried out comprehensive phenotyping by flow cytometry of neutrophils in the blood and airways of individuals with active pulmonary TB with and without HIV co-infection recruited in Durban, South Africa. Results Active TB was associated with a profound skewing of neutrophils in the blood toward phenotypes associated with activation and apoptosis, reduced phagocytosis, reverse transmigration, and immune regulation. This skewing was also apparently in airway neutrophils, particularly the regulatory subsets expressing PDL-1 and LOX-1. HIV co-infection did not impact neutrophil subsets in the blood but was associated with a phenotypic change in the airways and a reduction in key neutrophil functional proteins cathelicidin and arginase 1. Discussion Active TB is associated with profound skewing of blood and airway neutrophils and suggests multiple mechanisms by which neutrophils may exacerbate the immunopathology of TB. These data indicate potential avenues for reducing neutrophil-mediated lung pathology at the point of diagnosis.
Collapse
Affiliation(s)
| | - Mark Chambers
- Africa Health Research Institute, Durban, South Africa
| | - Lerato Ndlovu
- Africa Health Research Institute, Durban, South Africa
| | - Farina Karim
- Africa Health Research Institute, Durban, South Africa
| | | | - Zoey Mhlane
- Africa Health Research Institute, Durban, South Africa
| | | | - Yunus Moosa
- Department of Infectious Diseases, Nelson R. Mandela School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa
| | | | - Monjurul Hoque
- Department of Infectious Diseases, Nelson R. Mandela School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Alasdair Leslie
- Africa Health Research Institute, Durban, South Africa
- Department of Infectious Diseases, Nelson R. Mandela School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa
- Department of Infection and Immunity, University College London, London, United Kingdom
| |
Collapse
|
2
|
Moffat A, Gwyer Findlay E. Evidence for antigen presentation by human neutrophils. Blood 2024; 143:2455-2463. [PMID: 38498044 DOI: 10.1182/blood.2023023444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/06/2024] [Accepted: 03/09/2024] [Indexed: 03/19/2024] Open
Abstract
ABSTRACT Neutrophils are the first migrating responders to sterile and infectious inflammation and act in a powerful but nonspecific fashion to kill a wide variety of pathogens. It is now apparent that they can also act in a highly discriminating fashion; this is particularly evident in their interactions with other cells of the immune system. It is clear that neutrophils are present during the adaptive immune response, interacting with T cells in complex ways that differ between tissue types and disease state. One of the ways in which this interaction is mediated is by neutrophil expression of HLA molecules and presentation of antigen to T cells. In mice, this is well established to occur with both CD4+ and CD8+ T cells. However, the evidence is less strong with human cells. Here, we assembled available evidence for human neutrophil antigen presentation. We find that the human cells are clearly able to upregulate HLA-DR and costimulatory molecules; are able to process protein antigen into fragments recognized by T cells; are able to enter lymph node T cell zones; and, in vitro, are able to present antigen to memory T cells, inducing proliferation and cytokine production. However, many questions remain, particularly concerning whether the cell-cell interactions can last for sufficient time to trigger naïve T cells. These experiments are now critical as we unravel the complex interactions between these cells and their importance for the development of human immunity.
Collapse
Affiliation(s)
- Angus Moffat
- School of Biological Sciences, University of Southampton, Southampton, United Kingdom
| | - Emily Gwyer Findlay
- School of Biological Sciences, University of Southampton, Southampton, United Kingdom
| |
Collapse
|
3
|
Tumbath S, Jiang L, Li X, Zhang T, Zahid KR, Zhao Y, Zhou H, Yin Z, Lu T, Jiang S, Chen Y, Chen X, Fu YX, Huang X. β-Lapachone promotes the recruitment and polarization of tumor-associated neutrophils (TANs) toward an antitumor (N1) phenotype in NQO1-positive cancers. Oncoimmunology 2024; 13:2363000. [PMID: 38846085 PMCID: PMC11155710 DOI: 10.1080/2162402x.2024.2363000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 05/29/2024] [Indexed: 06/09/2024] Open
Abstract
NAD(P)H:quinone oxidoreductase 1 (NQO1) is overexpressed in most solid cancers, emerging as a promising target for tumor-selective killing. β-Lapachone (β-Lap), an NQO1 bioactivatable drug, exhibits significant antitumor effects on NQO1-positive cancer cells by inducing immunogenic cell death (ICD) and enhancing tumor immunogenicity. However, the interaction between β-Lap-mediated antitumor immune responses and neutrophils, novel antigen-presenting cells (APCs), remains unknown. This study demonstrates that β-Lap selectively kills NQO1-positive murine tumor cells by significantly increasing intracellular ROS formation and inducing DNA double strand breaks (DSBs), resulting in DNA damage. Treatment with β-Lap efficiently eradicates immunocompetent murine tumors and significantly increases the infiltration of tumor-associated neutrophils (TANs) into the tumor microenvironment (TME), which plays a crucial role in the drug's therapeutic efficacy. Further, the presence of β-Lap-induced antigen medium leads bone marrow-derived neutrophils (BMNs) to directly kill murine tumor cells, aiding in dendritic cells (DCs) recruitment and significantly enhancing CD8+ T cell proliferation. β-Lap treatment also drives the polarization of TANs toward an antitumor N1 phenotype, characterized by elevated IFN-β expression and reduced TGF-β cytokine expression, along with increased CD95 and CD54 surface markers. β-Lap treatment also induces N1 TAN-mediated T cell cross-priming. The HMGB1/TLR4/MyD88 signaling cascade influences neutrophil infiltration into β-Lap-treated tumors. Blocking this cascade or depleting neutrophil infiltration abolishes the antigen-specific T cell response induced by β-Lap treatment. Overall, this study provides comprehensive insights into the role of tumor-infiltrating neutrophils in the β-Lap-induced antitumor activity against NQO1-positive murine tumors.
Collapse
Affiliation(s)
- Soumya Tumbath
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Lingxiang Jiang
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Xiaoguang Li
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Taolan Zhang
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Kashif Rafiq Zahid
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ye Zhao
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Hao Zhou
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Zhijun Yin
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Tao Lu
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Shu Jiang
- Division of public health sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Yaomin Chen
- Indiana University Health Pathology Laboratory, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Xiang Chen
- Department of Computational Biology, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Yang-Xin Fu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Xiumei Huang
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN, USA
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, USA
| |
Collapse
|
4
|
Avery D, Morandini L, Sheakley L, Grabiec M, Olivares-Navarrete R. CD4 + and CD8 + T cells reduce inflammation and promote bone healing in response to titanium implants. Acta Biomater 2024; 179:385-397. [PMID: 38554889 PMCID: PMC11045310 DOI: 10.1016/j.actbio.2024.03.022] [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: 11/27/2023] [Revised: 03/11/2024] [Accepted: 03/24/2024] [Indexed: 04/02/2024]
Abstract
T cells are adaptive immune cells essential in pathogenic response, cancer, and autoimmune disorders. During the integration of biomaterials with host tissue, T cells modify the local inflammatory environment by releasing cytokines that promote inflammatory resolution following implantation. T cells are vital for the modulation of innate immune cells, recruitment and proliferation of mesenchymal stem cells (MSCs), and formation of functional tissue around the biomaterial implant. We have demonstrated that deficiency of αβ T cells promotes macrophage polarization towards a pro-inflammatory phenotype and attenuates MSC recruitment and proliferation in vitro and in vivo. The goal of this study was to understand how CD4+ and CD8+ T cells, subsets of the αβ T cell family, impact the inflammatory response to titanium (Ti) biomaterials. Deficiency of either CD4+ or CD8+ T cells increased the proportion of pro-inflammatory macrophages, lowered anti-inflammatory macrophages, and diminished MSC recruitment in vitro and in vivo. In addition, new bone formation at the implantation site was significantly reduced in T cell-deficient mice compared to T cell-competent mice. Deficiency of CD4+ T cells exacerbated these effects compared to CD8+ T cell deficiency. Our results show the importance of CD4+ and CD8+ T cells in modulating the inflammatory response and promoting new bone formation in response to modified Ti implants. STATEMENT OF SIGNIFICANCE: CD4+ and CD8+ T cells are essential in modulating the peri-implant microenvironment during the inflammatory response to biomaterial implantation. This study shows that deficiency of either CD4+ or CD8+ T cell subsets altered macrophage polarization and reduced MSC recruitment and proliferation at the implantation site.
Collapse
Affiliation(s)
- Derek Avery
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 70 S. Madison Street, Room 3328, Richmond, VA 23220, United States
| | - Lais Morandini
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 70 S. Madison Street, Room 3328, Richmond, VA 23220, United States
| | - Luke Sheakley
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 70 S. Madison Street, Room 3328, Richmond, VA 23220, United States
| | - Melissa Grabiec
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 70 S. Madison Street, Room 3328, Richmond, VA 23220, United States
| | - Rene Olivares-Navarrete
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 70 S. Madison Street, Room 3328, Richmond, VA 23220, United States.
| |
Collapse
|
5
|
Schoberleitner I, Faserl K, Tripp CH, Pechriggl EJ, Sigl S, Brunner A, Zelger B, Hermann-Kleiter N, Baier L, Steinkellner T, Sarg B, Egle D, Brunner C, Wolfram D. Silicone implant surface microtopography modulates inflammation and tissue repair in capsular fibrosis. Front Immunol 2024; 15:1342895. [PMID: 38566997 PMCID: PMC10985323 DOI: 10.3389/fimmu.2024.1342895] [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: 11/28/2023] [Accepted: 02/29/2024] [Indexed: 04/04/2024] Open
Abstract
Excessive fibrous capsule formation around silicone mammary implants (SMI) involves immune reactions to silicone. Capsular fibrosis, a common SMI complication linked to host responses, worsens with specific implant topographies. Our study with 10 patients investigated intra- and inter-individually, reduced surface roughness effects on disease progression, wound responses, chronic inflammation, and capsular composition. The results illuminate the significant impact of surface roughness on acute inflammatory responses, fibrinogen accumulation, and the subsequent fibrotic cascade. The reduction of surface roughness to an average roughness of 4 μm emerges as a promising approach for mitigating detrimental immune reactions, promoting healthy wound healing, and curbing excessive fibrosis. The identified proteins adhering to rougher surfaces shed light on potential mediators of pro-inflammatory and pro-fibrotic processes, further emphasizing the need for meticulous consideration of surface design. The composition of the implant capsule and the discovery of intracapsular HSP60 expression highlight the intricate web of stress responses and immune activation that can impact long-term tissue outcomes.
Collapse
Affiliation(s)
- Ines Schoberleitner
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Klaus Faserl
- Protein Core Facility, Institute of Medical Chemistry, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Christoph H. Tripp
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Elisabeth Judith Pechriggl
- Department of Anatomy, Histology and Embryology, Institute of Clinical and Functional Anatomy, Medical University of Innsbruck, Innsbruck, Austria
| | - Stephan Sigl
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Andrea Brunner
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
- INNPATH GmbH, Tirol Kliniken, Innsbruck, Austria
| | - Bettina Zelger
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Natascha Hermann-Kleiter
- Institute of Cell Genetics, Department for Genetics and Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Leoni Baier
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Theresia Steinkellner
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Bettina Sarg
- Protein Core Facility, Institute of Medical Chemistry, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Daniel Egle
- Department of Obstetrics and Gynecology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christine Brunner
- Department of Obstetrics and Gynecology, Medical University of Innsbruck, Innsbruck, Austria
| | - Dolores Wolfram
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
6
|
Awasthi D, Sarode A. Neutrophils at the Crossroads: Unraveling the Multifaceted Role in the Tumor Microenvironment. Int J Mol Sci 2024; 25:2929. [PMID: 38474175 DOI: 10.3390/ijms25052929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Over the past decade, research has prominently established neutrophils as key contributors to the intricate landscape of tumor immune biology. As polymorphonuclear granulocytes within the innate immune system, neutrophils play a pivotal and abundant role, constituting approximately ∼70% of all peripheral leukocytes in humans and ∼10-20% in mice. This substantial presence positions them as the frontline defense against potential threats. Equipped with a diverse array of mechanisms, including reactive oxygen species (ROS) generation, degranulation, phagocytosis, and the formation of neutrophil extracellular traps (NETs), neutrophils undeniably serve as indispensable components of the innate immune system. While these innate functions enable neutrophils to interact with adaptive immune cells such as T, B, and NK cells, influencing their functions, they also engage in dynamic interactions with rapidly dividing tumor cells. Consequently, neutrophils are emerging as crucial regulators in both pro- and anti-tumor immunity. This comprehensive review delves into recent research to illuminate the multifaceted roles of neutrophils. It explores their diverse functions within the tumor microenvironment, shedding light on their heterogeneity and their impact on tumor recruitment, progression, and modulation. Additionally, the review underscores their potential anti-tumoral capabilities. Finally, it provides valuable insights into clinical therapies targeting neutrophils, presenting a promising approach to leveraging innate immunity for enhanced cancer treatment.
Collapse
Affiliation(s)
- Deepika Awasthi
- Department of Obstetrics and Gynecology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Aditya Sarode
- Department of Microbiology and Immunology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| |
Collapse
|
7
|
Convertino D, Nencioni M, Russo L, Mishra N, Hiltunen VM, Bertilacchi MS, Marchetti L, Giacomelli C, Trincavelli ML, Coletti C. Interaction of graphene and WS 2 with neutrophils and mesenchymal stem cells: implications for peripheral nerve regeneration. NANOSCALE 2024; 16:1792-1806. [PMID: 38175567 DOI: 10.1039/d3nr04927b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Graphene and bidimensional (2D) materials have been widely used in nerve conduits to boost peripheral nerve regeneration. Nevertheless, the experimental and commercial variability in graphene-based materials generates graphene forms with different structures and properties that can trigger entirely diverse biological responses from all the players involved in nerve repair. Herein, we focus on the graphene and tungsten disulfide (WS2) interaction with non-neuronal cell types involved in nerve tissue regeneration. We synthesize highly crystalline graphene and WS2 with scalable techniques such as thermal decomposition and chemical vapor deposition. The materials were able to trigger the activation of a neutrophil human model promoting Neutrophil Extracellular Traps (NETs) production, particularly under basal conditions, although neutrophils were not able to degrade graphene. Of note is that pristine graphene acts as a repellent for the NET adhesion, a beneficial property for nerve conduit long-term applications. Mesenchymal stem cells (MSCs) have been proposed as a promising strategy for nerve regeneration in combination with a conduit. Thus, the interaction of graphene with MSCs was also investigated, and reduced viability was observed only on specific graphene substrates. Overall, the results confirm the possibility of regulating the cell response by varying graphene properties and selecting the most suitable graphene forms.
Collapse
Affiliation(s)
- Domenica Convertino
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
| | - Martina Nencioni
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | - Lara Russo
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | - Neeraj Mishra
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy
| | - Vesa-Matti Hiltunen
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy
| | | | - Laura Marchetti
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | - Chiara Giacomelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, Pisa, Italy.
| | | | - Camilla Coletti
- Center for Nanotechnology Innovation @ NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro 12, Pisa, Italy.
- Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy
| |
Collapse
|
8
|
Yao M, Henriksson J, Fahlander H, Guisti Coitinho P, Lundgren T, Ågren N, Ericzon BG, Kumagai-Braesch M. Evaluation of Methods to Obtain Peripheral Blood Mononuclear Cells From Deceased Donors for Tolerance-Induction Protocols. Cell Transplant 2024; 33:9636897241256462. [PMID: 38808671 PMCID: PMC11143843 DOI: 10.1177/09636897241256462] [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: 12/25/2023] [Revised: 05/01/2024] [Accepted: 05/06/2024] [Indexed: 05/30/2024] Open
Abstract
Regulatory cell therapies have shown promise in tolerance-induction protocols in living donor organ transplantation. These protocols should be pursued in deceased donor transplantation. Donor peripheral mononuclear cells (PBMCs) are an optimal source of donor antigens for the induction of donor-specific regulatory cells. During the development of a regulatory cell tolerance-induction protocol with organs from deceased donors, we compared 3 methods of obtaining PBMCs from deceased donors focusing on cell yield, viability, and contamination of unwanted cell types. PBMC procurement methods: 1. During organ procurement at the time of cold perfusion, blood was collected from the vena cava and placed into a 10-liter blood collection bag, and thereafter transported to Karolinska University Hospital, where leukapheresis was performed (BCL). 2. Blood was collected via the vena cava into blood donation bags before cold perfusion. The bags underwent buffy coat separation and thereafter automated leukocyte isolation system (BCS). 3. To collect PBMCs, leukapheresis was performed via a central dialysis catheter on deceased donors in the intensive care unit (ICU) prior to the organ procurement procedure (LEU).All 3 methods to obtain PBMC from deceased donors were safe and did not affect the procurement of organs. BCL contained around 50% of NK cells in lymphocytes population. LEU had a highest yield of donor PBMC among 3 groups. LEU had the lower amount of granulocyte contamination, compared to BCS and BCL. Based on these results, we choose LEU as the preferred method to obtain donor PBMC in the development of our tolerance-induction protocol.
Collapse
Affiliation(s)
- Ming Yao
- Division of Transplantation Surgery, CLINTEC, Karolinska Institutet, and Department of Transplantation Surgery, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Jarmo Henriksson
- Centre for Apheresis and Stem Cell Laboratory, KITM, Karolinska University Laboratory, Karolinska University Hospital, Stockholm, Sweden
| | - Henrik Fahlander
- Centre for Apheresis and Stem Cell Laboratory, KITM, Karolinska University Laboratory, Karolinska University Hospital, Stockholm, Sweden
| | - Pablo Guisti Coitinho
- Centre for Apheresis and Stem Cell Laboratory, KITM, Karolinska University Laboratory, Karolinska University Hospital, Stockholm, Sweden
| | - Torbjörn Lundgren
- Division of Transplantation Surgery, CLINTEC, Karolinska Institutet, and Department of Transplantation Surgery, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Nils Ågren
- Division of Transplantation Surgery, CLINTEC, Karolinska Institutet, and Department of Transplantation Surgery, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Bo-Göran Ericzon
- Division of Transplantation Surgery, CLINTEC, Karolinska Institutet, and Department of Transplantation Surgery, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Makiko Kumagai-Braesch
- Division of Transplantation Surgery, CLINTEC, Karolinska Institutet, and Department of Transplantation Surgery, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| |
Collapse
|
9
|
Riaz B, Sohn S. Neutrophils in Inflammatory Diseases: Unraveling the Impact of Their Derived Molecules and Heterogeneity. Cells 2023; 12:2621. [PMID: 37998356 PMCID: PMC10670008 DOI: 10.3390/cells12222621] [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: 10/27/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
Inflammatory diseases involve numerous disorders and medical conditions defined by an insufficient level of self-tolerance. These diseases evolve over the course of a multi-step process through which environmental variables play a crucial role in the emergence of aberrant innate and adaptive immunological responses. According to experimental data accumulated over the past decade, neutrophils play a significant role as effector cells in innate immunity. However, neutrophils are also involved in the progression of numerous diseases through participation in the onset and maintenance of immune-mediated dysregulation by releasing neutrophil-derived molecules and forming neutrophil extracellular traps, ultimately causing destruction of tissues. Additionally, neutrophils have a wide variety of functional heterogeneity with adverse effects on inflammatory diseases. However, the complicated role of neutrophil biology and its heterogeneity in inflammatory diseases remains unclear. Moreover, neutrophils are considered an intriguing target of interventional therapies due to their multifaceted role in a number of diseases. Several approaches have been developed to therapeutically target neutrophils, involving strategies to improve neutrophil function, with various compounds and inhibitors currently undergoing clinical trials, although challenges and contradictions in the field persist. This review outlines the current literature on roles of neutrophils, neutrophil-derived molecules, and neutrophil heterogeneity in the pathogenesis of autoimmune and inflammatory diseases with potential future therapeutic strategies.
Collapse
Affiliation(s)
- Bushra Riaz
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea;
| | - Seonghyang Sohn
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea;
- Department of Microbiology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| |
Collapse
|
10
|
Zhong S, Borlak J. Sex disparities in non-small cell lung cancer: mechanistic insights from a cRaf transgenic disease model. EBioMedicine 2023; 95:104763. [PMID: 37625265 PMCID: PMC10470261 DOI: 10.1016/j.ebiom.2023.104763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/10/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Women are at greater risk of developing non-small cell lung cancer (NSCLC), yet the underlying causes remain unclear. METHODS We performed whole genome scans in lung tumours of cRaf transgenic mice and identified miRNA, transcription factor and hormone receptor dependent gene regulations. We confirmed hormone receptors by immunohistochemistry and constructed regulatory gene networks by considering experimentally validated miRNA-gene and transcription factor-miRNA/gene targets. Bioinformatics, genomic foot-printing and gene enrichment analysis established sex-specific circuits of lung tumour growth. Translational research involved a large cohort of NSCLC patients. We evaluated commonalities in sex-specific NSCLC gene regulations between mice and humans and determined their prognostic value in Kaplan-Meier survival statistics and COX proportional hazard regression analysis. FINDINGS Overexpression of the cRaf kinase elicited an extraordinary 8-fold increase in tumour growth among females, and nearly 70% of the 112 differentially expressed genes (DEGs) were female specific. We identified oncogenes, oncomirs, tumour suppressors, cell cycle regulators and MAPK/EGFR signalling molecules, which prompted sex-based differences in NSCLC, and we deciphered a regulatory gene-network, which protected males from accelerated tumour growth. Strikingly, 41% of DEGs are targets of hormone receptors, and the majority (85%) are oestrogen receptor (ER) dependent. We confirmed the role of ER in a large cohort of NSCLC patients and validated 40% of DEGs induced by cRaf in clinical tumour samples. INTERPRETATION We report the molecular wiring that prompted sex disparities in tumour growth. This allowed us to propose the development of molecular targeted therapies by jointly blocking ER, CDK1 and arginase 2 in NSCLC. FUNDING We gratefully acknowledge the financial support of the Lower Saxony Ministry of Culture and Sciences and Volkswagen Foundation, Germany to JB (25A.5-7251-99-3/00) and of the Chinese Scholarship Council to SZ (202008080022). This publication is funded by the Deutsche Forschungsgemeinschaft (DFG) as part of the "Open Access Publikationskosten" program.
Collapse
Affiliation(s)
- Shen Zhong
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany
| | - Jürgen Borlak
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| |
Collapse
|
11
|
Roy S, Fitzgerald K, Lalani A, Lai CW, Kim A, Kim J, Ou P, Mirsoian A, Liu X, Ramrakhiani A, Zhao H, Zhou H, Xu H, Meisen H, Li CM, Lugt BV, Thibault S, Tinberg CE, DeVoss J, Egen J, Wu LC, Noubade R. Autonomous IL-36R signaling in neutrophils activates potent antitumor effector functions. J Clin Invest 2023; 133:e162088. [PMID: 37317970 DOI: 10.1172/jci162088] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 04/19/2023] [Indexed: 06/16/2023] Open
Abstract
While the rapid advancement of immunotherapies has revolutionized cancer treatment, only a small fraction of patients derive clinical benefit. Eradication of large, established tumors appears to depend on engaging and activating both innate and adaptive immune system components to mount a rigorous and comprehensive immune response. Identifying such agents is a high unmet medical need, because they are sparse in the therapeutic landscape of cancer treatment. Here, we report that IL-36 cytokine can engage both innate and adaptive immunity to remodel an immune-suppressive tumor microenvironment (TME) and mediate potent antitumor immune responses via signaling in host hematopoietic cells. Mechanistically, IL-36 signaling modulates neutrophils in a cell-intrinsic manner to greatly enhance not only their ability to directly kill tumor cells but also promote T and NK cell responses. Thus, while poor prognostic outcomes are typically associated with neutrophil enrichment in the TME, our results highlight the pleiotropic effects of IL-36 and its therapeutic potential to modify tumor-infiltrating neutrophils into potent effector cells and engage both the innate and adaptive immune system to achieve durable antitumor responses in solid tumors.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Haoda Xu
- Therapeutic Discovery, Amgen, South San Francisco, California, USA
| | | | | | | | - Steve Thibault
- Therapeutic Discovery, Amgen, South San Francisco, California, USA
| | | | | | | | | | | |
Collapse
|
12
|
Lad BM, Beniwal AS, Jain S, Shukla P, Jung J, Shah SS, Yagnik G, Babikir H, Nguyen AT, Gill S, Young JS, Lui A, Salha D, Diaz A, Aghi MK. Glioblastoma induces the recruitment and differentiation of hybrid neutrophils from skull bone marrow. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.24.534105. [PMID: 36993266 PMCID: PMC10055347 DOI: 10.1101/2023.03.24.534105] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Tumor-associated neutrophil (TAN) effects on glioblastoma biology remain under-characterized. We show here that 'hybrid' neutrophils with dendritic features - including morphological complexity, expression of antigen presentation genes, and the ability to process exogenous peptide and stimulate MHCII-dependent T cell activation - accumulate intratumorally and suppress tumor growth in vivo . Trajectory analysis of patient TAN scRNA-seq identifies this phenotype as a polarization state which is distinct from canonical cytotoxic TANs and differentiates intratumorally from immature precursors absent in circulation. Rather, these hybrid-inducible immature neutrophils - which we identified in patient and murine glioblastomas - arise from local skull marrow. Through labeled skull flap transplantation and targeted ablation, we characterize calvarial marrow as a potent contributor of antitumoral myeloid APCs, including hybrid TANs and dendritic cells, which elicit T cell cytotoxicity and memory. As such, agents augmenting neutrophil egress from skull marrow - such as intracalvarial AMD3100 whose survival prolonging-effect in GBM we demonstrate - present therapeutic potential.
Collapse
|
13
|
Bert S, Nadkarni S, Perretti M. Neutrophil-T cell crosstalk and the control of the host inflammatory response. Immunol Rev 2023; 314:36-49. [PMID: 36326214 PMCID: PMC10952212 DOI: 10.1111/imr.13162] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
While fundamental in their innate role in combating infection and responding to injury, neutrophils are emerging as key modulators of adaptive immune responses. Such functions are attained via both soluble and nonsoluble effectors that enable at least two major downstream outcomes: first, to mediate and control acute inflammatory responses and second, to regulate adaptive immunity and ultimately promoting the development and maintenance of immune tolerance either by releasing immuno-modulatory factors, including cytokines, or by directly interacting with cells of the adaptive immune system. Herein, we review these novel properties of neutrophils and redefine the pathophysiological functions of these fascinating multi-tasking cells, exploring the different mechanisms through which neutrophils are able to either enhance and orchestrate T cell pro-inflammatory responses or inhibit T cell activity to maintain immune tolerance.
Collapse
Affiliation(s)
- Serena Bert
- The William Harvey Research InstituteQueen Mary University of LondonLondonUK
| | - Suchita Nadkarni
- The William Harvey Research InstituteQueen Mary University of LondonLondonUK
| | - Mauro Perretti
- The William Harvey Research InstituteQueen Mary University of LondonLondonUK
| |
Collapse
|
14
|
Tamura K, Miyato H, Kanamaru R, Sadatomo A, Takahashi K, Ohzawa H, Koyanagi T, Saga Y, Takei Y, Fujiwara H, Lefor AK, Sata N, Kitayama J. Activated neutrophils inhibit chemotactic migration of activated T lymphocytes to CXCL11 by multiple mechanisms. Cell Immunol 2023; 384:104663. [PMID: 36638767 DOI: 10.1016/j.cellimm.2023.104663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
Accumulation of T lymphocytes and neutrophils shows inversed association with the prognosis of cancer patients, suggesting infiltration of neutrophils and T cells might be differently regulated in tumor tissue. In this study, we stimulated neutrophils with PMA or LPS to produce neutrophil extracellular traps (NETs) and examined the effects on chemotactic migration of activated T cells to a representative T cell chemokine, CXCL11. Migration of the activated T cells was totally abrogated by PMA-stimulated neutrophils placed either in upper or lower chamber, which was mostly canceled by pretreatment with Catalase. Although LPS-stimulated neutrophils also inhibited T cell migration, depletion of NETs by ultracentrifugation or degradation of NETs with DNAse I restored T cell migration. Western blots showed that LPS-stimulated neutrophils thoroughly degraded CXCL11 with NETs dependent manner. Activated neutrophils inhibit T cell chemotaxis via multiple mechanisms including the release of H2O2 and chemokine degradation by NETs, which may suppress adaptive immunity.
Collapse
Affiliation(s)
- Kohei Tamura
- Department of Obstetrics and Gynecology, Jichi Medical University, Japan
| | - Hideyo Miyato
- Department of Surgery, Jichi Medical University, Japan
| | | | - Ai Sadatomo
- Department of Surgery, Jichi Medical University, Japan
| | | | - Hideyuki Ohzawa
- Department of Clinical Oncology, Jichi Medical University, Japan
| | - Takahiro Koyanagi
- Department of Obstetrics and Gynecology, Jichi Medical University, Japan
| | - Yasushi Saga
- Department of Obstetrics and Gynecology, Jichi Medical University, Japan
| | - Yuji Takei
- Department of Obstetrics and Gynecology, Jichi Medical University, Japan
| | - Hiroyuki Fujiwara
- Department of Obstetrics and Gynecology, Jichi Medical University, Japan
| | | | - Naohiro Sata
- Department of Surgery, Jichi Medical University, Japan
| | - Joji Kitayama
- Department of Surgery, Jichi Medical University, Japan; Center for Clinical Research, Jichi Medical University Hospital, Japan.
| |
Collapse
|
15
|
Fonseca Brito L, Tödter S, Kottlau J, Cermann K, Spier A, Petersen E, Schäfer I, Twerenbold R, Aepfelbacher M, Lütgehetmann M, Stahl FR. Performance of an interferon-γ release assay-based test for cell-mediated immunity to SARS-CoV-2. Front Immunol 2023; 14:1069968. [PMID: 36875076 PMCID: PMC9978494 DOI: 10.3389/fimmu.2023.1069968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/31/2023] [Indexed: 02/18/2023] Open
Abstract
In search for immunological correlates of protection against acute coronavirus disease 2019 (COVID-19) there is a need for high through-put assays for cell-mediated immunity (CMI) to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We established an interferon-γ release assay -based test for detection of CMI against SARS-CoV-2 spike (S) or nucleocapsid (NC) peptides. Blood samples obtained from 549 healthy or convalescent individuals were measured for interferon-γ (IFN-γ) production after peptide stimulation using a certified chemiluminescence immunoassay. Test performance was calculated applying cutoff values with the highest Youden indices in receiver-operating-characteristics curve analysis and compared to a commercially available serologic test. Potential confounders and clinical correlates were assessed for all test systems. 522 samples obtained from 378 convalescent in median 298 days after PCR-confirmed SARS-CoV-2 infection and 144 healthy control individuals were included in the final analysis. CMI testing had a sensitivity and specificity of up to 89% and 74% for S peptides and 89% and 91% for NC peptides, respectively. High white blood cell counts correlated negatively with IFN-γ responses but there was no CMI decay in samples obtained up to one year after recovery. Severe clinical symptoms at time of acute infection were associated with higher measures of adaptive immunity and reported hair loss at time of examination. This laboratory-developed test for CMI to SARS-CoV-2 NC peptides exhibits excellent test performance, is suitable for high through-put routine diagnostics, and should be evaluated for clinical outcome prediction in prospective pathogen re-exposure.
Collapse
Affiliation(s)
- Luís Fonseca Brito
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Virus-Host-Interaction, Leibniz Institute of Virology, Hamburg, Germany
| | - Silvia Tödter
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Julian Kottlau
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Kathrin Cermann
- Institute of Microbiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anthea Spier
- Institute of Microbiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Elina Petersen
- Department of Cardiology, University Heart and Vascular Center, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Population Health Research Department, University Heart and Vascular Center, Hamburg, Germany
| | - Ines Schäfer
- Department of Cardiology, University Heart and Vascular Center, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Population Health Research Department, University Heart and Vascular Center, Hamburg, Germany
| | - Raphael Twerenbold
- Department of Cardiology, University Heart and Vascular Center, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Population Health Research Department, University Heart and Vascular Center, Hamburg, Germany.,German Center for Cardiovascular Research (DZHK) Partner Site Hamburg-Kiel-Lübeck, Hamburg, Germany
| | - Martin Aepfelbacher
- Institute of Microbiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Marc Lütgehetmann
- Institute of Microbiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Felix R Stahl
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Virus-Host-Interaction, Leibniz Institute of Virology, Hamburg, Germany
| |
Collapse
|
16
|
Hurtado Gutiérrez MJ, Allard FL, Mosha HT, Dubois CM, McDonald PP. Human Neutrophils Generate Extracellular Vesicles That Modulate Their Functional Responses. Cells 2022; 12:cells12010136. [PMID: 36611930 PMCID: PMC9818892 DOI: 10.3390/cells12010136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/25/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Neutrophils influence innate and adaptive immunity by releasing various cytokines and chemokines, by generating neutrophil extracellular traps (NETs), and by modulating their own survival. Neutrophils also produce extracellular vesicles (EVs) termed ectosomes, which influence the function of other immune cells. Here, we studied neutrophil-derived ectosomes (NDEs) and whether they can modulate autologous neutrophil responses. We first characterized EV production by neutrophils, following MISEV 2018 guidelines to facilitate comparisons with other studies. We found that such EVs are principally NDEs, that they are rapidly released in response to several (but not all) physiological stimuli, and that a number of signaling pathways are involved in the induction of this response. When co-incubated with autologous neutrophils, NDE constituents were rapidly incorporated into recipient cells and this triggered and/or modulated neutrophil responses. The pro-survival effect of GM-CSF, G-CSF, IFNγ, and dexamethasone was reversed; CXCL8 and NET formation were induced in otherwise unstimulated neutrophils; the induction of inflammatory chemokines by TNFα was modulated depending on the activation state of the NDEs' parent cells; and inducible NET generation was attenuated. Our data show that NDE generation modulates neutrophil responses in an autocrine and paracrine manner, and indicate that this probably represents an important aspect of how neutrophils shape their environment and cellular interactions.
Collapse
Affiliation(s)
- María José Hurtado Gutiérrez
- Department of Immunology and Cell Biology, Medicine Faculty, Université de Sherbrooke, CRCHUS, Sherbrooke, QC J1H5N4, Canada
| | - Frédérick L. Allard
- Department of Immunology and Cell Biology, Medicine Faculty, Université de Sherbrooke, CRCHUS, Sherbrooke, QC J1H5N4, Canada
| | - Hugo Tshivuadi Mosha
- Department of Immunology and Cell Biology, Medicine Faculty, Université de Sherbrooke, CRCHUS, Sherbrooke, QC J1H5N4, Canada
| | - Claire M. Dubois
- Department of Immunology and Cell Biology, Medicine Faculty, Université de Sherbrooke, CRCHUS, Sherbrooke, QC J1H5N4, Canada
| | - Patrick P. McDonald
- Pulmonary Division, Medicine Faculty, Université de Sherbrooke, CRCHUS, Sherbrooke, QC J1K2R1, Canada
- Correspondence:
| |
Collapse
|
17
|
Gaffney E, Murphy D, Walsh A, Connolly S, Basdeo SA, Keane J, Phelan JJ. Defining the role of neutrophils in the lung during infection: Implications for tuberculosis disease. Front Immunol 2022; 13:984293. [PMID: 36203565 PMCID: PMC9531133 DOI: 10.3389/fimmu.2022.984293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/30/2022] [Indexed: 11/25/2022] Open
Abstract
Neutrophils are implicated in the pathogenesis of many diseases involving inflammation. Neutrophils are also critical to host defence and have a key role in the innate immune response to infection. Despite their efficiencies against a wide range of pathogens however, their ability to contain and combat Mycobacterium tuberculosis (Mtb) in the lung remains uncertain and contentious. The host response to Mtb infection is very complex, involving the secretion of various cytokines and chemokines from a wide variety of immune cells, including neutrophils, macrophages, monocytes, T cells, B cells, NK cells and dendritic cells. Considering the contributing role neutrophils play in the advancement of many diseases, understanding how an inflammatory microenvironment affects neutrophils, and how neutrophils interact with other immune cells, particularly in the context of the infected lung, may aid the design of immunomodulatory therapies. In the current review, we provide a brief overview of the mechanisms that underpin pathogen clearance by neutrophils and discuss their role in the context of Mtb and non-Mtb infection. Next, we examine the current evidence demonstrating how neutrophils interact with a range of human and non-human immune cells and how these interactions can differentially prime, activate and alter a repertoire of neutrophil effector functions. Furthermore, we discuss the metabolic pathways employed by neutrophils in modulating their response to activation, pathogen stimulation and infection. To conclude, we highlight knowledge gaps in the field and discuss plausible novel drug treatments that target host neutrophil metabolism and function which could hold therapeutic potential for people suffering from respiratory infections.
Collapse
|
18
|
Zahid KR, Raza U, Tumbath S, Jiang L, Xu W, Huang X. Neutrophils: Musketeers against immunotherapy. Front Oncol 2022; 12:975981. [PMID: 36091114 PMCID: PMC9453237 DOI: 10.3389/fonc.2022.975981] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/01/2022] [Indexed: 11/24/2022] Open
Abstract
Neutrophils, the most copious leukocytes in human blood, play a critical role in tumorigenesis, cancer progression, and immune suppression. Recently, neutrophils have attracted the attention of researchers, immunologists, and oncologists because of their potential role in orchestrating immune evasion in human diseases including cancer, which has led to a hot debate redefining the contribution of neutrophils in tumor progression and immunity. To make this debate fruitful, this review seeks to provide a recent update about the contribution of neutrophils in immune suppression and tumor progression. Here, we first described the molecular pathways through which neutrophils aid in cancer progression and orchestrate immune suppression/evasion. Later, we summarized the underlying molecular mechanisms of neutrophil-mediated therapy resistance and highlighted various approaches through which neutrophil antagonism may heighten the efficacy of the immune checkpoint blockade therapy. Finally, we have highlighted several unsolved questions and hope that answering these questions will provide a new avenue toward immunotherapy revolution.
Collapse
Affiliation(s)
- Kashif Rafiq Zahid
- Department of Radiation Oncology, Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Umar Raza
- Department of Biological Sciences, National University of Medical Sciences (NUMS), Rawalpindi, Pakistan
| | - Soumya Tumbath
- Department of Radiation Oncology, Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Lingxiang Jiang
- Department of Radiation Oncology, Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Wenjuan Xu
- Department of Radiation Oncology, Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Xiumei Huang
- Department of Radiation Oncology, Melvin and Bren Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN, United States
- *Correspondence: Xiumei Huang,
| |
Collapse
|
19
|
McLeish KR, Shrestha R, Vashishta A, Rane MJ, Barati MT, Brier ME, Lau MG, Hu X, Chen O, Wessel CR, Spalding T, Bush SE, Ijemere K, Hopkins CD, Cooke EA, Tandon S, Manning T, Uriarte SM, Huang J, Yan J. Differential Functional Responses of Neutrophil Subsets in Severe COVID-19 Patients. Front Immunol 2022; 13:879686. [PMID: 35711435 PMCID: PMC9197482 DOI: 10.3389/fimmu.2022.879686] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/02/2022] [Indexed: 12/25/2022] Open
Abstract
Neutrophils play a significant role in determining disease severity following SARS-CoV-2 infection. Gene and protein expression defines several neutrophil clusters in COVID-19, including the emergence of low density neutrophils (LDN) that are associated with severe disease. The functional capabilities of these neutrophil clusters and correlation with gene and protein expression are unknown. To define host defense and immunosuppressive functions of normal density neutrophils (NDN) and LDN from COVID-19 patients, we recruited 64 patients with severe COVID-19 and 26 healthy donors (HD). Phagocytosis, respiratory burst activity, degranulation, neutrophil extracellular trap (NET) formation, and T-cell suppression in those neutrophil subsets were measured. NDN from severe/critical COVID-19 patients showed evidence of priming with enhanced phagocytosis, respiratory burst activity, and degranulation of secretory vesicles and gelatinase and specific granules, while NET formation was similar to HD NDN. COVID LDN response was impaired except for enhanced NET formation. A subset of COVID LDN with intermediate CD16 expression (CD16Int LDN) promoted T cell proliferation to a level similar to HD NDN, while COVID NDN and the CD16Hi LDN failed to stimulate T-cell activation. All 3 COVID-19 neutrophil populations suppressed stimulation of IFN-γ production, compared to HD NDN. We conclude that NDN and LDN from COVID-19 patients possess complementary functional capabilities that may act cooperatively to determine disease severity. We predict that global neutrophil responses that induce COVID-19 ARDS will vary depending on the proportion of neutrophil subsets.
Collapse
Affiliation(s)
- Kenneth R. McLeish
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville, KY, United States
- *Correspondence: Kenneth R. McLeish, ; Jun Yan,
| | - Rejeena Shrestha
- Department of Microbiology and Immunology, University of Louisville, KY, United States
| | - Aruna Vashishta
- Department of Oral Immunology and Infectious Diseases, School of Dentistry, University of Louisville, KY, United States
| | - Madhavi J. Rane
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville, KY, United States
| | - Michelle T. Barati
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville, KY, United States
| | - Michael E. Brier
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville, KY, United States
| | - Mario Gutierrez Lau
- Department of Oral Immunology and Infectious Diseases, School of Dentistry, University of Louisville, KY, United States
| | - Xiaoling Hu
- Division of Immunotherapy, The Hiram C. Polk, Jr., MD Department of Surgery, Immuno-Oncology Program, Brown Cancer Center, University of Louisville, Louisville, KY, United States
| | - Oscar Chen
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Caitlin R. Wessel
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Travis Spalding
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Sarah E. Bush
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Kenechi Ijemere
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - C. Danielle Hopkins
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Elizabeth A. Cooke
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Shweta Tandon
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville, KY, United States
| | - Terri Manning
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville, KY, United States
| | - Silvia M. Uriarte
- Department of Oral Immunology and Infectious Diseases, School of Dentistry, University of Louisville, KY, United States
| | - Jiapeng Huang
- Department of Anesthesiology and Perioperative Medicine, University of Louisville, KY, United States
| | - Jun Yan
- Department of Microbiology and Immunology, University of Louisville, KY, United States
- Division of Immunotherapy, The Hiram C. Polk, Jr., MD Department of Surgery, Immuno-Oncology Program, Brown Cancer Center, University of Louisville, Louisville, KY, United States
- *Correspondence: Kenneth R. McLeish, ; Jun Yan,
| |
Collapse
|
20
|
Margraf A, Lowell CA, Zarbock A. Neutrophils in acute inflammation: current concepts and translational implications. Blood 2022; 139:2130-2144. [PMID: 34624098 PMCID: PMC9728535 DOI: 10.1182/blood.2021012295] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/05/2021] [Indexed: 12/14/2022] Open
Abstract
Modulation of neutrophil recruitment and function is crucial for targeting inflammatory cells to sites of infection to combat invading pathogens while, at the same time, limiting host tissue injury or autoimmunity. The underlying mechanisms regulating recruitment of neutrophils, 1 of the most abundant inflammatory cells, have gained increasing interest over the years. The previously described classical recruitment cascade of leukocytes has been extended to include capturing, rolling, adhesion, crawling, and transmigration, as well as a reverse-transmigration step that is crucial for balancing immune defense and control of remote organ endothelial leakage. Current developments in the field emphasize the importance of cellular interplay, tissue environmental cues, circadian rhythmicity, detection of neutrophil phenotypes, differential chemokine sensing, and contribution of distinct signaling components to receptor activation and integrin conformations. The use of therapeutics modulating neutrophil activation responses, as well as mutations causing dysfunctional neutrophil receptors and impaired signaling cascades, have been defined in translational animal models. Human correlates of such mutations result in increased susceptibility to infections or organ damage. This review focuses on current advances in the understanding of the regulation of neutrophil recruitment and functionality and translational implications of current discoveries in the field with a focus on acute inflammation and sepsis.
Collapse
Affiliation(s)
- Andreas Margraf
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
- William Harvey Research Institute, Bart's and the London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Clifford A. Lowell
- Department of Laboratory Medicine, University of California, San Francisco
| | - Alexander Zarbock
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| |
Collapse
|
21
|
Wu CF, Hung TT, Su YC, Chen PJ, Lai KH, Wang CC. Endoplasmic Reticulum Stress of Oral Squamous Cell Carcinoma Induces Immunosuppression of Neutrophils. Front Oncol 2022; 12:818192. [PMID: 35372022 PMCID: PMC8966035 DOI: 10.3389/fonc.2022.818192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 02/21/2022] [Indexed: 02/02/2023] Open
Abstract
The endoplasmic reticulum (ER) stress of cancer cells not only determined cancer cell fate but also indirectly triggered proinflammatory or immunosuppressive responses of macrophages. In addition, ER stressed neutrophils were known to acquire immunosuppressive activity with surface expression of lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1). Since the importance of tumor ER stress and immunosuppressive neutrophils has been emphasized in head and neck cancers, we hypothesized that the ER stress of oral squamous cell carcinoma (OSCC) could transform neutrophils into LOX-1 expressing immunosuppressive phenotype. Two human OSCC cell lines, SCC25 and OML1, were treated with either vehicle or thapsigargin (THG), an ER stress inducer. These tumor conditioned media (TCM) were collected accordingly. Then human peripheral blood neutrophils from healthy donors were cultured in these TCM. The results showed that neutrophils cultured in THG-treated TCM had higher expression of LOX-1 compared with those cultured in vehicle-treated TCM. Moreover, by interleukin-2/anti-CD3/anti-CD28 activated autologous T cell proliferation assay, neutrophils conditioned by THG-treated TCM were shown to inhibit T cell proliferation more significantly than those conditioned by vehicle-treated TCM. These novel findings indicated that the ER stress of OSCC could be transmitted to neutrophils which in turn expressed LOX-1 and obtained immunosuppressive ability. Our findings further supported the existence of "transmissible" ER stress between tumor cells and neutrophils.
Collapse
Affiliation(s)
- Ching-Fang Wu
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan.,Division of Nephrology, Department of Internal Medicine, E-Da Cancer Hospital, Kaohsiung, Taiwan
| | - Tzu-Ting Hung
- Division of Nephrology, Department of Internal Medicine, E-Da Cancer Hospital, Kaohsiung, Taiwan
| | - Yu-Chieh Su
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan.,Division of Hematology-Oncology, Department of Internal Medicine, E-Da Hospital, Kaohsiung, Taiwan
| | - Po-Jen Chen
- Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan
| | - Kuei-Hung Lai
- PhD Program in Clinical Drug, Development of Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Chih-Chun Wang
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan.,Department of Otolaryngology, E-Da Hospital, Kaohsiung, Taiwan
| |
Collapse
|
22
|
Raftopoulou S, Valadez-Cosmes P, Mihalic ZN, Schicho R, Kargl J. Tumor-Mediated Neutrophil Polarization and Therapeutic Implications. Int J Mol Sci 2022; 23:ijms23063218. [PMID: 35328639 PMCID: PMC8951452 DOI: 10.3390/ijms23063218] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/25/2022] [Accepted: 03/09/2022] [Indexed: 01/04/2023] Open
Abstract
Neutrophils are immune cells with reported phenotypic and functional plasticity. Tumor-associated neutrophils display many roles during cancer progression. Several tumor microenvironment (TME)-derived factors orchestrate neutrophil release from the bone marrow, recruitment and functional polarization, while simultaneously neutrophils are active stimulators of the TME by secreting factors that affect immune interactions and subsequently tumor progression. Successful immunotherapies for many cancer types and stages depend on the targeting of tumor-infiltrating lymphocytes. Neutrophils impact the success of immunotherapies, such as immune checkpoint blockade therapies, by displaying lymphocyte suppressive properties. The identification and characterization of distinct neutrophil subpopulations or polarization states with pro- and antitumor phenotypes and the identification of the major TME-derived factors of neutrophil polarization would allow us to harness the full potential of neutrophils as complementary targets in anticancer precision therapies.
Collapse
|
23
|
Arve-Butler S, Mossberg A, Schmidt T, Welinder C, Yan H, Berthold E, Król P, Kahn R. Neutrophils Lose the Capacity to Suppress T Cell Proliferation Upon Migration Towards Inflamed Joints in Juvenile Idiopathic Arthritis. Front Immunol 2022; 12:795260. [PMID: 35095871 PMCID: PMC8792960 DOI: 10.3389/fimmu.2021.795260] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/23/2021] [Indexed: 02/03/2023] Open
Abstract
Neutrophils are highly abundant in synovial fluid of rheumatic inflamed joints. In oligoarticular juvenile idiopathic arthritis (JIA), synovial fluid neutrophils have impaired effector functions and altered phenotype. We hypothesized that these alterations might impact the immunoregulatory interplay between neutrophils and T cells. In this study we analyzed the suppressive effect of neutrophils, isolated from blood and synovial fluid of oligoarticular JIA patients, on CD4+ T cells activated by CD3/CD28 stimulation. JIA blood neutrophils suppressed T cell proliferation but synovial fluid neutrophils from several patients did not. The loss of T cell suppression was replicated in an in vitro transmigration assay, where healthy control neutrophils migrated into synovial fluid through transwell inserts with endothelial cells and synoviocytes. Non-migrated neutrophils suppressed proliferation of activated CD4+ T cells, but migrated neutrophils had no suppressive effect. Neutrophil suppression of T cells was partly dependent on reactive oxygen species (ROS), demonstrated by impaired suppression in presence of catalase. Migrated neutrophils had reduced ROS production compared to non-migrated neutrophils. A proteomic analysis of transwell-migrated neutrophils identified alterations in proteins related to neutrophil ROS production and degranulation, and biological processes involving protein transport, cell-cell contact and inflammation. In conclusion, neutrophils in synovial fluid of children with JIA have impaired capacity to suppress activated T cells, which may be due to reduced oxidative burst and alterations in proteins related to cell-cell contact and inflammation. The lack of T cell suppression by neutrophils in synovial fluid may contribute to local inflammation and autoimmune reactions in the JIA joint.
Collapse
Affiliation(s)
- Sabine Arve-Butler
- Department of Rheumatology, Clinical Sciences Lund, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Anki Mossberg
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Tobias Schmidt
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Charlotte Welinder
- Department of Clinical Sciences, Division of Oncology, Lund University, Lund, Sweden
| | - Hong Yan
- Swedish National Infrastructure for Biological Mass Spectrometry, Biological Mass Spectrometry (BioMS), Lund, Sweden
| | - Elisabet Berthold
- Department of Rheumatology, Clinical Sciences Lund, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Petra Król
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Robin Kahn
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| |
Collapse
|
24
|
The Role of Neutrophils in the Pathogenesis of Chronic Lymphocytic Leukemia. Int J Mol Sci 2021; 23:ijms23010365. [PMID: 35008790 PMCID: PMC8745265 DOI: 10.3390/ijms23010365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/19/2021] [Accepted: 12/27/2021] [Indexed: 11/25/2022] Open
Abstract
Tumor-associated neutrophils appear to be a crucial element of the tumor microenvironment that actively participates in the development and progression of cancerous diseases. The increased lifespan, plasticity in changing of phenotype, and functions of neutrophils influence the course of the disease and may significantly affect survival. In patients with chronic lymphocytic leukemia (CLL), disturbances in neutrophils functions impede the effective immune defense against pathogens. Therefore, understanding the mechanism underlying such a phenomenon in CLL seems to be of great importance. Here we discuss the recent reports analyzing the phenotype and functions of neutrophils in CLL, the most common leukemia in adults. We summarize the data concerning both the phenotype and the mechanisms by which neutrophils directly support the proliferation and survival of malignant B cells.
Collapse
|
25
|
Bert S, Ward EJ, Nadkarni S. Neutrophils in pregnancy: New insights into innate and adaptive immune regulation. Immunology 2021; 164:665-676. [PMID: 34287859 PMCID: PMC8561097 DOI: 10.1111/imm.13392] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/06/2021] [Accepted: 07/08/2021] [Indexed: 12/16/2022] Open
Abstract
The immunology of pregnancy has been the focus of many studies to better understand how the mother is able to tolerate the presence of a semi-allogeneic fetus. Far from the initial view of pregnancy as a state of immunosuppression, successful fetal development from implantation to birth is now known to be under the control of an intricate balance of immune cells. The balance between pro-inflammatory functions used to promote embryo implantation and placental development and immunosuppressive activity to maintain maternal tolerance of the fetus is an immunological phenotype unique to pregnancy, which is dependent on the time of gestation. Neutrophils are one of a host of innate immune cells detected at the maternal-fetal interface, but very little is known of their function. In this review, we explore the emerging functions of neutrophils during pregnancy and their interactions with and regulation of T cells, a key adaptive immune cell population essential for the establishment of fetal-maternal tolerance.
Collapse
Affiliation(s)
- Serena Bert
- William Harvey Research InstituteBarts and the London School of MedicineQueen Mary UniversityLondonUK
| | - Eleanor J. Ward
- William Harvey Research InstituteBarts and the London School of MedicineQueen Mary UniversityLondonUK
| | - Suchita Nadkarni
- William Harvey Research InstituteBarts and the London School of MedicineQueen Mary UniversityLondonUK
| |
Collapse
|
26
|
Lok LSC, Clatworthy MR. Neutrophils in secondary lymphoid organs. Immunology 2021; 164:677-688. [PMID: 34411302 PMCID: PMC8561103 DOI: 10.1111/imm.13406] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/02/2021] [Accepted: 08/16/2021] [Indexed: 12/15/2022] Open
Abstract
Neutrophils are traditionally considered short‐lived, circulating innate immune cells that are rapidly recruited to sites of inflammation in response to infectious and inflammatory stimuli. Neutrophils efficiently internalize, kill or entrap pathogens, but their effector molecules may cause collateral tissue damage. More recently, it has been appreciated that neutrophils can also influence adaptive immunity. Lymph nodes (LNs) are immune cell‐rich secondary lymphoid organs that provide an ideal platform for cellular interaction and the integration of immunological information collected from local tissues. A variety of peripheral stimuli promote neutrophil migration to draining LNs via blood or lymphatics, utilizing differing molecular cues depending on the site of entry. Within LNs, neutrophils interact with other innate and adaptive cells. Crosstalk with subcapsular sinus macrophages contributes to the control of pathogen spread beyond the LN. Neutrophils can influence antigen presentation indirectly by interacting with DCs or directly by expressing major histocompatibility complex (MHC) and costimulatory molecules for antigen presentation. Interactions between neutrophils and adaptive lymphocytes can alter B‐cell antibody responses. Studies have shown conflicting results on whether neutrophils exert stimulatory or inhibitory effects on other LN immune cells, with stimulus‐specific and temporal differences in the outcome of these interactions. Furthermore, neutrophils have also been shown to traffick to LNs in homeostasis, with a potential role in immune surveillance, antigen capture and in shaping early adaptive responses in LNs. Understanding the mechanisms underpinning the effects of neutrophils on LN immune cells and adaptive immunity could facilitate the development of neutrophil‐targeted therapies in inflammatory diseases.
Collapse
Affiliation(s)
- Laurence S C Lok
- Molecular Immunity Unit, MRC Laboratory of Molecular Biology, University of Cambridge Department of Medicine, Cambridge, UK.,Cambridge Institute for Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, UK.,Department of Immunology and Cell Biology, Graduate School of Medicine, Osaka University, Osaka, Japan.,Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Menna R Clatworthy
- Molecular Immunity Unit, MRC Laboratory of Molecular Biology, University of Cambridge Department of Medicine, Cambridge, UK.,Cambridge Institute for Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, UK.,Cellular Genetics, Wellcome Sanger Institute, Hinxton, UK
| |
Collapse
|
27
|
Hardisty GR, Llanwarne F, Minns D, Gillan JL, Davidson DJ, Gwyer Findlay E, Gray RD. High Purity Isolation of Low Density Neutrophils Casts Doubt on Their Exceptionality in Health and Disease. Front Immunol 2021; 12:625922. [PMID: 34168640 PMCID: PMC8217868 DOI: 10.3389/fimmu.2021.625922] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 05/13/2021] [Indexed: 12/12/2022] Open
Abstract
Low density neutrophils (LDNs) are described in a number of inflammatory conditions, cancers and infections and associated with immunopathology, and a mechanistic role in disease. The role of LDNs at homeostasis in healthy individuals has not been investigated. We have developed an isolation protocol that generates high purity LDNs from healthy donors. Healthy LDNs were identical to healthy normal density neutrophils (NDNs), aside from reduced neutrophil extracellular trap formation. CD66b, CD16, CD15, CD10, CD54, CD62L, CXCR2, CD47 and CD11b were expressed at equivalent levels in healthy LDNs and NDNs and underwent apoptosis and ROS production interchangeably. Healthy LDNs had no differential effect on CD4+ or CD8+ T cell proliferation or IFNγ production compared with NDNs. LDNs were generated from healthy NDNs in vitro by activation with TNF, LPS or fMLF, suggesting a mechanism of LDN generation in disease however, we show neutrophilia in people with Cystic Fibrosis (CF) was not due to increased LDNs. LDNs are present in the neutrophil pool at homeostasis and have limited functional differences to NDNs. We conclude that increased LDN numbers in disease reflect the specific pathology or inflammatory environment and that neutrophil density alone is inadequate to classify discrete functional populations of neutrophils.
Collapse
Affiliation(s)
- Gareth R Hardisty
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Frances Llanwarne
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Danielle Minns
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Jonathan L Gillan
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Donald J Davidson
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Emily Gwyer Findlay
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Robert D Gray
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| |
Collapse
|