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Andrews JT, Zhang Z, Prasad GVRK, Huey F, Nazarova EV, Wang J, Ranaraja A, Weinkopff T, Li LX, Mu S, Birrer MJ, Huang SCC, Zhang N, Argüello RJ, Philips JA, Mattila JT, Huang L. Metabolically active neutrophils represent a permissive niche for Mycobacterium tuberculosis. Mucosal Immunol 2024:S1933-0219(24)00048-5. [PMID: 38844208 DOI: 10.1016/j.mucimm.2024.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 05/26/2024] [Accepted: 05/29/2024] [Indexed: 06/09/2024]
Abstract
Mycobacterium tuberculosis (Mtb)-infected neutrophils are often found in the airways of patients with active tuberculosis (TB), and excessive recruitment of neutrophils to the lung is linked to increased bacterial burden and aggravated pathology in TB. The basis for the permissiveness of neutrophils for Mtb and the ability to be pathogenic in TB has been elusive. Here, we identified metabolic and functional features of neutrophils that contribute to their permissiveness in Mtb infection. Using single-cell metabolic and transcriptional analyses, we found that neutrophils in the Mtb-infected lung displayed elevated mitochondrial metabolism, which was largely attributed to the induction of activated neutrophils with enhanced metabolic activities. The activated neutrophil subpopulation was also identified in the lung granulomas from Mtb-infected non-human primates. Functionally, activated neutrophils harbored more viable bacteria and displayed enhanced lipid uptake and accumulation. Surprisingly, we found that interferon-γ promoted the activation of lung neutrophils during Mtb infection. Lastly, perturbation of lipid uptake pathways selectively compromised Mtb survival in activated neutrophils. These findings suggest that neutrophil heterogeneity and metabolic diversity are key to their permissiveness for Mtb and that metabolic pathways in neutrophils represent potential host-directed therapeutics in TB.
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Affiliation(s)
- J Tucker Andrews
- Department of Microbiology and Immunology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Zijing Zhang
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - G V R Krishna Prasad
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA
| | - Fischer Huey
- Department of Microbiology and Immunology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Evgeniya V Nazarova
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Jocelyn Wang
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Ananya Ranaraja
- Department of Microbiology and Immunology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Tiffany Weinkopff
- Department of Microbiology and Immunology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Lin-Xi Li
- Department of Microbiology and Immunology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Shengyu Mu
- Department of Pharmacology and Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Michael J Birrer
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Stanley Ching-Cheng Huang
- Pelotonia Institute for Immuno-Oncology, The Ohio State University College of Medicine, Columbus, OH, USA; Department of Microbial Infection and Immunity, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Nan Zhang
- Immunology, Metastasis & Microenvironment Program, Ellen and Ronald Caplan Cancer Center, The Wistar Institute, Philadelphia, PA, USA
| | - Rafael J Argüello
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Jennifer A Philips
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA; Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St Louis, MO, USA
| | - Joshua T Mattila
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Lu Huang
- Department of Microbiology and Immunology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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Marsile-Medun S, Souchard M, Abba Moussa D, Reynaud É, Tuaillon E, Naranjo-Gomez M, Pelegrin M. Fc receptors are key discriminatory markers of granulocytes subsets in people living with HIV-1. Front Immunol 2024; 15:1345422. [PMID: 38384451 PMCID: PMC10879334 DOI: 10.3389/fimmu.2024.1345422] [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: 11/27/2023] [Accepted: 01/19/2024] [Indexed: 02/23/2024] Open
Abstract
Introduction Granulocytes are innate immune cells that play a key role in pathogen elimination. Recent studies revealed the diversity of granulocytes in terms of phenotype and function. In particular, a subset of granulocytes identified as low-density granulocytes (LDG) has been described in physiological conditions and with increased frequencies in several pathological contexts. However, the properties of LDG are still controversial as they vary according to the pathophysiological environment. Here we investigated the heterogeneity of granulocyte populations and the potential differences in phenotype and immunomodulatory capacity between LDG and normal density granulocytes (NDG) in people living with HIV-1 (PLWH). Methods To this end, we developed an optimized method to purify LDG and NDG from a single blood sample, and performed in-depth, comparative phenotypic characterization of both granulocyte subtypes. We also assessed the impact of purification steps on the expression of cell surface markers on LDG by immunophenotyping them at different stages of isolation. Results We identified 9 cell surface markers (CD16, CD32, CD89, CD62L, CD177, CD31, CD10, CXCR4 and CD172α) differentially expressed between LDG and NDG. Noteworthy, markers that distinguish the two subsets include receptors for the Fc part of IgG (CD16, CD32) and IgA (CD89). Importantly, we also highlighted that the purification procedure affects the expression of several cell surface markers (i.e.CD63, CD66b, …) which must be taken into account when characterizing LDG. Our work sheds new light on the properties of LDG in PLWH and provides an extensive characterization of this granulocyte subset in which Fc receptors are key discriminatory markers.
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Affiliation(s)
| | - Manon Souchard
- IRMB, Univ Montpellier, INSERM, CNRS, Montpellier, France
| | | | - Élisa Reynaud
- Laboratoire de Virologie, Centre Hospitalier-Universitaire de Montpellier, Montpellier, France
| | - Edouard Tuaillon
- Laboratoire de Virologie, Centre Hospitalier-Universitaire de Montpellier, Montpellier, France
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Parackova Z, Zentsova I, Bloomfield M, Klocperk A, Horvath R, Malcova H, Cebecauerova D, Sediva A. Expanded population of low-density neutrophils in juvenile idiopathic arthritis. Front Immunol 2023; 14:1229520. [PMID: 37915575 PMCID: PMC10616245 DOI: 10.3389/fimmu.2023.1229520] [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: 05/26/2023] [Accepted: 10/05/2023] [Indexed: 11/03/2023] Open
Abstract
Introduction Juvenile idiopathic arthritis (JIA), a clinically variable disease characterized by autoimmune arthritis, affects children, and its immunopathology remains elusive. Alterations in neutrophil biology play an important role in this disease. In the present study, we aimed to explore the features of low-density neutrophils (LDNs) in patients with JIA. Methods Gene expression of peripheral blood mononuclear cells (PBMCs) from children with distinct subtypes of JIA was analyzed by NanoString Immunology panel. Presence of LDNs was ascertained by flow cytometry and the release of neutrophil-associated products were analyzed by LUMINEX. Results LDNs were detected in patients' peripheral blood mononuclear cells (PBMCs) after density gradient centrifugation. Transcriptomic analysis of JIA PBMCs revealed that genes related to neutrophil degranulation were markedly upregulated. The number of LDNs and level of their degranulation products increased in patients' PBMCs and correlated with serum calprotectin, but not with disease activity, sedimentation rate and C-reactive protein (CRP) levels. The phenotypes of LDNs varied from those of normal-density neutrophils and healthy donor LDNs. Phenotypical analysis revealed LDNs are immature and primed population with decreased suppressive capacity. A negative correlation between surface proteins CD62L, CD66b, and CD11b and the number of inflamed joints/JADAS was established. Conclusion Our results describe LDNs as primed, degranulated, immature cells with impaired suppressive activities. This work thus contributes to the increasing body of evidence that LDNs in JIA are altered and their role in the disease immunopathogenesis and possible clinical associations should be investigated further.
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Affiliation(s)
- Zuzana Parackova
- Department of Immunology, 2nd Faculty of Medicine Charles University, University Hospital in Motol, Prague, Czechia
| | - Irena Zentsova
- Department of Immunology, 2nd Faculty of Medicine Charles University, University Hospital in Motol, Prague, Czechia
| | - Marketa Bloomfield
- Department of Immunology, 2nd Faculty of Medicine Charles University, University Hospital in Motol, Prague, Czechia
| | - Adam Klocperk
- Department of Immunology, 2nd Faculty of Medicine Charles University, University Hospital in Motol, Prague, Czechia
| | - Rudolf Horvath
- Department of Paediatric and Adult Rheumatology, University Hospital in Motol, Prague, Czechia
| | - Hana Malcova
- Department of Paediatric and Adult Rheumatology, University Hospital in Motol, Prague, Czechia
| | - Dita Cebecauerova
- Department of Paediatric and Adult Rheumatology, University Hospital in Motol, Prague, Czechia
| | - Anna Sediva
- Department of Immunology, 2nd Faculty of Medicine Charles University, University Hospital in Motol, Prague, Czechia
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Kroon EE, Correa-Macedo W, Evans R, Seeger A, Engelbrecht L, Kriel JA, Loos B, Okugbeni N, Orlova M, Cassart P, Kinnear CJ, Tromp GC, Möller M, Wilkinson RJ, Coussens AK, Schurr E, Hoal EG. Neutrophil extracellular trap formation and gene programs distinguish TST/IGRA sensitization outcomes among Mycobacterium tuberculosis exposed persons living with HIV. PLoS Genet 2023; 19:e1010888. [PMID: 37616312 PMCID: PMC10470897 DOI: 10.1371/journal.pgen.1010888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 08/31/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
Persons living with HIV (PLWH) have an increased risk for tuberculosis (TB). After prolonged and repeated exposure, some PLWH never develop TB and show no evidence of immune sensitization to Mycobacterium tuberculosis (Mtb) as defined by persistently negative tuberculin skin tests (TST) and interferon gamma release assays (IGRA). This group has been identified and defined as HIV+ persistently TB, tuberculin and IGRA negative (HITTIN). To investigate potential innate mechanisms unique to individuals with the HITTIN phenotype we compared their neutrophil Mtb infection response to that of PLWH, with no TB history, but who test persistently IGRA positive, and tuberculin positive (HIT). Neutrophil samples from 17 HITTIN (PMNHITTIN) and 11 HIT (PMNHIT) were isolated and infected with Mtb H37Rv for 1h and 6h. RNA was extracted and used for RNAseq analysis. Since there was no significant differential transcriptional response at 1h between infected PMNHITTIN and PMNHIT, we focused on the 6h timepoint. When compared to uninfected PMN, PMNHITTIN displayed 3106 significantly upregulated and 3548 significantly downregulated differentially expressed genes (DEGs) (absolute cutoff of a log2FC of 0.2, FDR < 0.05) whereas PMNHIT demonstrated 3816 significantly upregulated and 3794 significantly downregulated DEGs following 6h Mtb infection. Contrasting the log2FC 6h infection response to Mtb from PMNHITTIN against PMNHIT, 2285 genes showed significant differential response between the two groups. Overall PMNHITTIN had a lower fold change response to Mtb infection compared to PMNHIT. According to pathway enrichment, Apoptosis and NETosis were differentially regulated between HITTIN and HIT PMN responses after 6h Mtb infection. To corroborate the blunted NETosis transcriptional response measured among HITTIN, fluorescence microscopy revealed relatively lower neutrophil extracellular trap formation and cell loss in PMNHITTIN compared to PMNHIT, showing that PMNHITTIN have a distinct response to Mtb.
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Affiliation(s)
- Elouise E. Kroon
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Wilian Correa-Macedo
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
- Department of Biochemistry, McGill University, Montréal, Canada
| | - Rachel Evans
- Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department Medical Biology (WEHI), Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Australia
| | - Allison Seeger
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Observatory, South Africa
| | - Lize Engelbrecht
- Central Analytical Facilities, Microscopy Unit, Stellenbosch University, Cape Town, South Africa
| | - Jurgen A. Kriel
- Central Analytical Facilities, Microscopy Unit, Stellenbosch University, Cape Town, South Africa
| | - Ben Loos
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Naomi Okugbeni
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Genomics Platform, Tygerberg, South Africa
| | - Marianna Orlova
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
- Department of Biochemistry, McGill University, Montréal, Canada
| | - Pauline Cassart
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
| | - Craig J. Kinnear
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Genomics Platform, Tygerberg, South Africa
| | - Gerard C. Tromp
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, University of Stellenbosch, Cape Town, South Africa
- SAMRC-SHIP South African Tuberculosis Bioinformatics Initiative (SATBBI), Center for Bioinformatics and Computational Biology, Cape Town, South Africa
| | - Marlo Möller
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, University of Stellenbosch, Cape Town, South Africa
| | - Robert J. Wilkinson
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Observatory, South Africa
- Department of Infectious Diseases, Imperial College London, London, United Kingdom
- The Francis Crick Institute, London, United Kingdom
| | - Anna K. Coussens
- Infectious Diseases and Immune Defence Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department Medical Biology (WEHI), Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Australia
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Observatory, South Africa
| | - Erwin Schurr
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montréal, Canada
- McGill International TB Centre, McGill University, Montréal, Canada
- Department of Biochemistry, McGill University, Montréal, Canada
| | - Eileen G. Hoal
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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5
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Potts M, Fletcher-Etherington A, Nightingale K, Mescia F, Bergamaschi L, Calero-Nieto FJ, Antrobus R, Williamson J, Parsons H, Huttlin EL, Kingston N, Göttgens B, Bradley JR, Lehner PJ, Matheson NJ, Smith KGC, Wills MR, Lyons PA, Weekes MP. Proteomic analysis of circulating immune cells identifies cellular phenotypes associated with COVID-19 severity. Cell Rep 2023; 42:112613. [PMID: 37302069 PMCID: PMC10243220 DOI: 10.1016/j.celrep.2023.112613] [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: 11/15/2022] [Revised: 03/29/2023] [Accepted: 05/22/2023] [Indexed: 06/13/2023] Open
Abstract
Certain serum proteins, including C-reactive protein (CRP) and D-dimer, have prognostic value in patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Nonetheless, these factors are non-specific, providing limited mechanistic insight into the peripheral blood mononuclear cell (PBMC) populations that drive the pathogenesis of severe COVID-19. To identify cellular phenotypes associated with disease, we performed a comprehensive, unbiased analysis of total and plasma-membrane PBMC proteomes from 40 unvaccinated individuals with SARS-CoV-2, spanning the whole disease spectrum. Combined with RNA sequencing (RNA-seq) and flow cytometry from the same donors, we define a comprehensive multi-omic profile for each severity level, revealing that immune-cell dysregulation progresses with increasing disease. The cell-surface proteins CEACAMs1, 6, and 8, CD177, CD63, and CD89 are strongly associated with severe COVID-19, corresponding to the emergence of atypical CD3+CD4+CEACAM1/6/8+CD177+CD63+CD89+ and CD16+CEACAM1/6/8+ mononuclear cells. Utilization of these markers may facilitate real-time patient assessment by flow cytometry and identify immune populations that could be targeted to ameliorate immunopathology.
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Affiliation(s)
- Martin Potts
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Alice Fletcher-Etherington
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Katie Nightingale
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Federica Mescia
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Laura Bergamaschi
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | | | - Robin Antrobus
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - James Williamson
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Harriet Parsons
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Edward L Huttlin
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Nathalie Kingston
- NIHR BioResource, Cambridge University Hospitals NHS Foundation, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK; Department of Haematology, University of Cambridge, Cambridge CB2 0AW, UK
| | - Berthold Göttgens
- Wellcome - MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge CB2 OAW, UK
| | - John R Bradley
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; NIHR BioResource, Cambridge University Hospitals NHS Foundation, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK
| | - Paul J Lehner
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Nicholas J Matheson
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK; NHS Blood and Transplant, Cambridge CB2 0PT, UK
| | - Kenneth G C Smith
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Mark R Wills
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Paul A Lyons
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Michael P Weekes
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK.
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Alcantara CA, Glassman I, Nguyen KH, Parthasarathy A, Venketaraman V. Neutrophils in Mycobacterium tuberculosis. Vaccines (Basel) 2023; 11:vaccines11030631. [PMID: 36992214 DOI: 10.3390/vaccines11030631] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023] Open
Abstract
Mycobacterium tuberculosis (M. tb) continues to be a leading cause of mortality within developing countries. The BCG vaccine to promote immunity against M. tb is widely used in developing countries and only in specific circumstances within the United States. However, current the literature reports equivocal data on the efficacy of the BCG vaccine. Critical within their role in the innate immune response, neutrophils serve as one of the first responders to infectious pathogens such as M. tb. Neutrophils promote effective clearance of M. tb through processes such as phagocytosis and the secretion of destructive granules. During the adaptative immune response, neutrophils modulate communication with lymphocytes to promote a strong pro-inflammatory response and to mediate the containment M. tb through the production of granulomas. In this review, we aim to highlight and summarize the role of neutrophils during an M. tb infection. Furthermore, the authors emphasize the need for more studies to be conducted on effective vaccination against M. tb.
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Affiliation(s)
- Cheldon Ann Alcantara
- Department of Basic Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Ira Glassman
- Department of Basic Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Kevin H Nguyen
- Department of Basic Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | | | - Vishwanath Venketaraman
- Department of Basic Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
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7
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Lipka S, Ostendorf L, Schneider U, Hiepe F, Apel F, Alexander T. Increased levels of immature and activated low density granulocytes and altered degradation of neutrophil extracellular traps in granulomatosis with polyangiitis. PLoS One 2023; 18:e0282919. [PMID: 36920946 PMCID: PMC10016653 DOI: 10.1371/journal.pone.0282919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
Granulomatosis with Polyangiitis (GPA) is a small vessel vasculitis typically associated with release of neutrophil extracellular traps (NETs) by activated neutrophils. In this study, we further aimed to investigate the contributions of neutrophils and NETs to the complex disease pathogenesis. We characterized the phenotype of neutrophils and their capacity to induce NETs. In addition, the level of circulating NETs, determined by neutrophil elastase/DNA complexes, and the capacity of patient sera to degrade NETs were investigated from blood samples of 12 GPA patients, 21 patients with systemic lupus erythematosus (SLE) and 21 healthy donors (HD). We found that GPA patients had significantly increased levels of low-density granulocytes (LDGs) compared to HD, which displayed an activated and more immature phenotype. While the propensity of normal-density granulocytes to release NETs and the levels of circulating NETs were not significantly different from HD, patient sera from GPA patients degraded NETs less effectively, which weakly correlated with markers of disease activity. In conclusion, increased levels of immature and activated LDGs and altered degradation of circulating NETs may contribute to pathogenesis of GPA, potentially by providing a source of autoantigens that trigger or further enhance autoimmune responses.
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Affiliation(s)
- Spyridon Lipka
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Berlin, Germany
- Deutsches Rheuma-Forschungszentrum (DRFZ Berlin)–a Leibniz Institute, Autoimmunology Group, Berlin, Germany
| | - Lennard Ostendorf
- Deutsches Rheuma-Forschungszentrum (DRFZ Berlin)–a Leibniz Institute, Autoimmunology Group, Berlin, Germany
- Department of Nephrology and Intensive Care Medicine–Charité–Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and the Berlin Institute of Health (BIH), Berlin, Germany
- Department of Rheumatology and Clinical Immunology–Charité–Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and the Berlin Institute of Health (BIH), Berlin, Germany
| | - Udo Schneider
- Department of Rheumatology and Clinical Immunology–Charité–Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and the Berlin Institute of Health (BIH), Berlin, Germany
| | - Falk Hiepe
- Deutsches Rheuma-Forschungszentrum (DRFZ Berlin)–a Leibniz Institute, Autoimmunology Group, Berlin, Germany
- Department of Rheumatology and Clinical Immunology–Charité–Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and the Berlin Institute of Health (BIH), Berlin, Germany
| | - Falko Apel
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Berlin, Germany
- Department of Biology, Humboldt University, Berlin, Germany
| | - Tobias Alexander
- Deutsches Rheuma-Forschungszentrum (DRFZ Berlin)–a Leibniz Institute, Autoimmunology Group, Berlin, Germany
- Department of Rheumatology and Clinical Immunology–Charité–Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin and the Berlin Institute of Health (BIH), Berlin, Germany
- * E-mail:
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8
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Dean LS, Devendra G, Jiyarom B, Subia N, Tallquist MD, Nerurkar VR, Chang SP, Chow DC, Shikuma CM, Park J. Phenotypic alteration of low-density granulocytes in people with pulmonary post-acute sequalae of SARS-CoV-2 infection. Front Immunol 2022; 13:1076724. [PMID: 36591237 PMCID: PMC9797994 DOI: 10.3389/fimmu.2022.1076724] [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: 10/21/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
Background Low-density granulocytes (LDGs) are a distinct subset of neutrophils whose increased abundance is associated with the severity of COVID-19. However, the long-term effects of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on LDG levels and phenotypic alteration remain unexplored. Methods Using participants naïve to SARS-CoV-2 (NP), infected with SARS-CoV-2 with no residual symptoms (NRS), and infected with SARS-CoV-2 with chronic pulmonary symptoms (PPASC), we compared LDG levels and their phenotype by measuring the expression of markers for activation, maturation, and neutrophil extracellular trap (NET) formation using flow cytometry. Results The number of LDGs was elevated in PPASC compared to NP. Individuals infected with SARS-CoV-2 (NRS and PPASC) demonstrated increased CD10+ and CD16hi subset counts of LDGs compared to NP group. Further characterization of LDGs demonstrated that LDGs from COVID-19 convalescents (PPASC and NRS) displayed increased markers of NET forming ability and aggregation with platelets compared to LDGs from NP, but no differences were observed between PPASC and NRS. Conclusions Our data from a small cohort study demonstrates that mature neutrophils with a heightened activation phenotype remain in circulation long after initial SARS-CoV-2 infection. Persistent elevation of markers for neutrophil activation and NET formation on LDGs, as well as an enhanced proclivity for platelet-neutrophil aggregation (PNA) formation in COVID-19 convalescent individuals may be associated with PPASC prognosis and development.
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Affiliation(s)
- Logan S. Dean
- Hawaii Center for AIDS, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Gehan Devendra
- Department of Pulmonary and Critical Care, Queen’s Medical Center, Honolulu, HI, United States
- Department of Medicine, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Boonyanudh Jiyarom
- Hawaii Center for AIDS, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Natalie Subia
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Michelle D. Tallquist
- Center for Cardiovascular Research, John A. Burns School of Medicine, University of Hawai’i at Mānoa, Honolulu, HI, United States
| | - Vivek R. Nerurkar
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Sandra P. Chang
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Dominic C. Chow
- Hawaii Center for AIDS, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
- Department of Medicine, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Cecilia M. Shikuma
- Hawaii Center for AIDS, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
- Department of Medicine, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
| | - Juwon Park
- Hawaii Center for AIDS, John A. Burns School of Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
- Department of Tropical Medicine, Medical Microbiology, and Pharmacology, John A. Burns School Medicine, University of Hawai’i at Manoa, Honolulu, HI, United States
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9
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Gimeno-Molina B, Muller I, Kropf P, Sykes L. The Role of Neutrophils in Pregnancy, Term and Preterm Labour. Life (Basel) 2022; 12:life12101512. [PMID: 36294949 PMCID: PMC9605051 DOI: 10.3390/life12101512] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/20/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
Neutrophils are surveillance cells, and the first to react and migrate to sites of inflammation and infection following a chemotactic gradient. Neutrophils play a key role in both sterile inflammation and infection, performing a wide variety of effector functions such as degranulation, phagocytosis, ROS production and release of neutrophil extracellular traps (NETs). Healthy term labour requires a sterile pro-inflammatory process, whereas one of the most common causes of spontaneous preterm birth is microbial driven. Peripheral neutrophilia has long been described during pregnancy, and evidence exists demonstrating neutrophils infiltrating the cervix, uterus and foetal membranes during both term and preterm deliveries. Their presence supports a role in tissue remodelling via their effector functions. In this review, we describe the effector functions of neutrophils. We summarise the evidence to support their role in healthy pregnancy and labour and describe their potential contribution to microbial driven preterm birth.
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Affiliation(s)
- Belen Gimeno-Molina
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0HS, UK
- March of Dimes European Prematurity Research Centre, Imperial College London, London W12 0HS, UK
| | - Ingrid Muller
- Department of Infectious Diseases, Imperial College London, London W2 1NY, UK
| | - Pascale Kropf
- March of Dimes European Prematurity Research Centre, Imperial College London, London W12 0HS, UK
- Department of Infectious Diseases, Imperial College London, London W2 1NY, UK
| | - Lynne Sykes
- Imperial College Parturition Research Group, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0HS, UK
- March of Dimes European Prematurity Research Centre, Imperial College London, London W12 0HS, UK
- The Parasol Foundation Centre for Women’s Health and Cancer Research, St. Mary’s Hospital, Imperial College Healthcare NHS Trust, London W2 1NY, UK
- Correspondence:
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10
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Rankin AN, Hendrix SV, Naik SK, Stallings CL. Exploring the Role of Low-Density Neutrophils During Mycobacterium tuberculosis Infection. Front Cell Infect Microbiol 2022; 12:901590. [PMID: 35800386 PMCID: PMC9253571 DOI: 10.3389/fcimb.2022.901590] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/23/2022] [Indexed: 12/14/2022] Open
Abstract
Tuberculosis (TB) is caused by infection with the bacterium Mycobacterium tuberculosis (Mtb), which primarily infects the lungs but can also cause extrapulmonary disease. Both the disease outcome and the pathology of TB are driven by the immune response mounted by the host. Infection with Mtb elicits inflammatory host responses that are necessary to control infection, but can also cause extensive tissue damage when in excess, and thus must be precisely balanced. In particular, excessive recruitment of neutrophils to the site of infection has been associated with poor control of Mtb infection, prompting investigations into the roles of neutrophils in TB disease outcomes. Recent studies have revealed that neutrophils can be divided into subpopulations that are differentially abundant in TB disease states, highlighting the potential complexities in determining the roles of neutrophils in Mtb infection. Specifically, neutrophils can be separated into normal (NDN) and low-density neutrophils (LDNs) based on their separation during density gradient centrifugation and surface marker expression. LDNs are present in higher numbers during active TB disease and increase in frequency with disease progression, although their direct contribution to TB is still unknown. In addition, the abundance of LDNs has also been associated with the severity of other lung infections, including COVID-19. In this review, we discuss recent findings regarding the roles of LDNs during lung inflammation, emphasizing their association with TB disease outcomes. This review highlights the importance of future investigations into the relationship between neutrophil diversity and TB disease severity.
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11
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Polak D, Bohle B. Neutrophils-typical atypical antigen presenting cells? Immunol Lett 2022; 247:52-58. [DOI: 10.1016/j.imlet.2022.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/28/2022] [Accepted: 04/28/2022] [Indexed: 11/05/2022]
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12
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Mycobacterium bovis Wild-Type BCG or Recombinant BCG Secreting Murine IL-18 (rBCG/IL-18) Strains in Driving Immune Responses in Immunocompetent or Immunosuppressed Mice. Vaccines (Basel) 2022; 10:vaccines10040615. [PMID: 35455364 PMCID: PMC9030902 DOI: 10.3390/vaccines10040615] [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: 02/27/2022] [Revised: 04/10/2022] [Accepted: 04/12/2022] [Indexed: 12/04/2022] Open
Abstract
Mycobacterium tuberculosis infections remain a global health problem in immunosuppressed patients. The effectiveness of BCG (Bacillus Calmette−Guérin), an anti-tuberculosis vaccine, is unsatisfactory. Finding a new vaccine candidate is a priority. We compared numerous immune markers in BCG-susceptible C57BL/6 and BCG-resistant C3H mice who had been injected with 0.9% NaCl (control) or with wild-type BCG or recombinant BCG secreting interleukin (IL)-18 (rBCG/IL-18) and in immunized mice who were immunocompromised with cyclophosphamide (CTX). The inoculation of rBCG/IL-18 in immunocompetent mice increased the percentage of bone marrow myeloblasts and promyelocytes, which were further elevated in the rBCG/IL-18/CTX-treated mice: C57BL/6 mice—3.0% and 11.4% (control) vs. 18.6% and 42.4%, respectively; C3H mice—1.1% and 7.7% (control) vs. 18.4% and 44.9%, respectively, p < 0.05. The bone marrow cells showed an increased mean fluorescence index (MFI) in the CD34 adhesion molecules: C57BL/6 mice—4.0 × 103 (control) vs. 6.2 × 103; C3H mice—4.0 × 103 (control) vs. 8.0 × 103, p < 0.05. Even in the CTX-treated mice, the rBCG/IL-18 mobilized macrophages for phagocytosis, C57BL/6 mice—4% (control) vs. 8%; C3H mice—2% (control) vs. 6%, and in immunocompetent mice, C57BL/6 induced the spleen homing of effector memory CD4+ and CD8+ T cells (TEM), 15% (control) vs. 28% and 8% (control) vs. 22%, respectively, p < 0.05. In conclusion, rBCG/IL-18 effectively induced selected immune determinants that were maintained even in immunocompromised mice.
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13
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Indicator of Inflammation and NETosis-Low-Density Granulocytes as a Biomarker of Autoimmune Hepatitis. J Clin Med 2022; 11:jcm11082174. [PMID: 35456267 PMCID: PMC9026397 DOI: 10.3390/jcm11082174] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 01/10/2023] Open
Abstract
Introduction. Interest in the potential role of low-density granulocytes (LDGs) in the development of autoimmune diseases has been renewed recently. Due to their pro-inflammatory action, more and more attention is paid to the role of LDGs, including those expressing the enzyme myeloperoxidase (MPO), in the development of autoimmune hepatitis (AIH). LDGs are actively involved in the formation of neutrophil extracellular traps (NETs). This phenomenon may favour the externalization of the autoantigen and lead to damage to internal organs, including the liver. Aim. The main aim of the study was to assess the diagnostic usefulness of the LDG percentage, including the fraction showing MPO expression as markers of systemic inflammation in AIH. Materials and methods. The study included a group of 25 patients with AIH and 20 healthy volunteers. Mononuclear cells, isolated from peripheral blood, were labelled with monoclonal antibodies conjugated to the appropriate fluorochromes (CD15-FITC, CD14-PE, CD10-PE-Cy5, MPO+) and then analyzed on a Navios Flow Cytometer (Beckman Coulter). Results. Patients with AIH had a higher median percentage of LDG (1.2 vs. 0.1; p = 0.0001) and LDG expressing MPO (0.8 vs. 0.3; p = 0.0017) when compared to healthy volunteers. Moreover, the percentage of LDG was characterised by 100% of sensitivity and 55% of specificity (AUC = 0.84; p < 0.0001), while the percentage of LDG expressing MPO was 92% of sensitivity and 55% of specificity (AUC = 0.78; p = 0.0001) in the detection of AIH. Conclusions. Assessment of inflammatory markers, such as the percentage of LDG and the percentage of LDG expressing MPO, may be helpful in assessing the phenomenon of an increased systemic inflammatory response and in assessing liver fibrosis (LC, Liver cirrhosis), which is inherent in liver decompensation. Taking into account the above arguments, the assessment of the percentage of LDG, including LDG expressing MPO, may turn out to be a useful marker in the diagnosis of AIH.
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14
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Specific NLRP3 Inflammasome Assembling and Regulation in Neutrophils: Relevance in Inflammatory and Infectious Diseases. Cells 2022; 11:cells11071188. [PMID: 35406754 PMCID: PMC8997905 DOI: 10.3390/cells11071188] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 12/14/2022] Open
Abstract
The NLRP3 inflammasome is a cytosolic multimeric protein platform that leads to the activation of the protease zymogen, caspase-1 (CASP1). Inflammasome activation mediates the proteolytic activation of pro-inflammatory cytokines (IL-1β and IL-18) and program cell death called pyroptosis. The pyroptosis is mediated by the protein executioner Gasdermin D (GSDMD), which forms pores at the plasma membrane to facilitate IL-1β/IL-18 secretion and causes pyroptosis. The NLRP3 inflammasome is activated in response to a large number of pathogenic and sterile insults. However, an uncontrolled inflammasome activation may drive inflammation-associated diseases. Initially, inflammasome-competent cells were believed to be limited to macrophages, dendritic cells (DC), and monocytes. However, emerging evidence indicates that neutrophils can assemble inflammasomes in response to various stimuli with functional relevance. Interestingly, the regulation of inflammasome in neutrophils appears to be unconventional. This review provides a broad overview of the role and regulation of inflammasomes—and more specifically NLRP3—in neutrophils.
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15
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Low-Density Granulocytes in Immune-Mediated Inflammatory Diseases. J Immunol Res 2022; 2022:1622160. [PMID: 35141336 PMCID: PMC8820945 DOI: 10.1155/2022/1622160] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 12/31/2021] [Indexed: 12/17/2022] Open
Abstract
Low-density granulocytes (LDGs), a distinct subset of neutrophils that colocalize with peripheral blood mononuclear cells after density gradient centrifugation, have been observed in many immune-mediated diseases. LDGs are considered highly proinflammatory because of enhanced spontaneous formation of neutrophil extracellular traps, endothelial toxicity, and cytokine production. Concomitantly, increased numbers of LDGs are associated with the severity of many immune-mediated inflammatory diseases. Recent studies, with the help of advanced transcriptomic technologies, demonstrated that LDGs were a mixed cell population composed of immature subset and mature subset, and these two subsets showed different pathogenic features. In this review, we summarize the current knowledge on the composition, origin, and pathogenic properties of LDGs in several immune-mediated inflammatory diseases and discuss potential medical interventions targeting LDGs.
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16
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Sun R, Huang J, Yang Y, Liu L, Shao Y, Li L, Sun B. Dysfunction of low-density neutrophils in peripheral circulation in patients with sepsis. Sci Rep 2022; 12:685. [PMID: 35027618 PMCID: PMC8758723 DOI: 10.1038/s41598-021-04682-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/24/2021] [Indexed: 12/12/2022] Open
Abstract
Low-density neutrophils (LDNs) have been described in tumors and various autoimmune diseases, where they exhibit immune dysfunction and alter disease progression. Nevertheless, LDNs have been rarely reported in sepsis. We studied sepsis patients admitted to the intensive care unit. Wright-Giemsa stain assay and Transmission electron microscopy were performed to detect the morphology of neutrophils. Flow cytometry was used to analyze the number and function of LDNs. Concentration of cytokines was measured using ELISA. Neutrophil chemotaxis was examined using an under-agarose chemotaxis model. We found that LDNs were significantly elevated in patients with sepsis. Phenotypes and morphological characteristics suggest that LDNs may be formed by mixtures of neutrophils at various maturation stages. In vitro experiments showed that LDN formation was closely associated with neutrophil degranulation. We preliminarily discussed changes in immune function in LDNs. Compared with high-density neutrophils, expression levels of CXC chemokine receptor 4 on LDN surfaces were increased, phagocytotic capacity was decreased, and life span was prolonged. The chemotactic ability of LDNs was significantly reduced, possibly related to the increased expression of P2X1. These data suggest that LDNs are essential components of neutrophils in sepsis. To clarify the source and dysfunction mechanism of LDN in sepsis may be helpful for the diagnosis and treatment of sepsis in the future.
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Affiliation(s)
- Ran Sun
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215002, Jiangsu Province, China
| | - Jiamin Huang
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215002, Jiangsu Province, China
| | - Yunxi Yang
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215002, Jiangsu Province, China
| | - Lu Liu
- School of Medicine, Jiangsu University, Zhenjiang, 212001, Jiangsu Province, China
| | - Yiming Shao
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215002, Jiangsu Province, China
| | - Linbin Li
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215002, Jiangsu Province, China
| | - Bingwei Sun
- Department of Burns and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215002, Jiangsu Province, China.
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17
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Meier S, Seddon JA, Maasdorp E, Kleynhans L, du Plessis N, Loxton AG, Malherbe ST, Zak DE, Thompson E, Duffy FJ, Kaufmann SHE, Ottenhoff THM, Scriba TJ, Suliman S, Sutherland JS, Winter J, Kuivaniemi H, Walzl G, Tromp G. Neutrophil degranulation, NETosis and platelet degranulation pathway genes are co-induced in whole blood up to six months before tuberculosis diagnosis. PLoS One 2022; 17:e0278295. [PMID: 36454773 PMCID: PMC9714760 DOI: 10.1371/journal.pone.0278295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
Mycobacterium tuberculosis (M.tb) causes tuberculosis (TB) and remains one of the leading causes of mortality due to an infectious pathogen. Host immune responses have been implicated in driving the progression from infection to severe lung disease. We analyzed longitudinal RNA sequencing (RNAseq) data from the whole blood of 74 TB progressors whose samples were grouped into four six-month intervals preceding diagnosis (the GC6-74 study). We additionally analyzed RNAseq data from an independent cohort of 90 TB patients with positron emission tomography-computed tomography (PET-CT) scan results which were used to categorize them into groups with high and low levels of lung damage (the Catalysis TB Biomarker study). These groups were compared to non-TB controls to obtain a complete whole blood transcriptional profile for individuals spanning from early stages of M.tb infection to TB diagnosis. The results revealed a steady increase in the number of genes that were differentially expressed in progressors at time points closer to diagnosis with 278 genes at 13-18 months, 742 at 7-12 months and 5,131 detected 1-6 months before diagnosis and 9,205 detected in TB patients. A total of 2,144 differentially expressed genes were detected when comparing TB patients with high and low levels of lung damage. There was a large overlap in the genes upregulated in progressors 1-6 months before diagnosis (86%) with those in TB patients. A comprehensive pathway analysis revealed a potent activation of neutrophil and platelet mediated defenses including neutrophil and platelet degranulation, and NET formation at both time points. These pathways were also enriched in TB patients with high levels of lung damage compared to those with low. These findings suggest that neutrophils and platelets play a critical role in TB pathogenesis, and provide details of the timing of specific effector mechanisms that may contribute to TB lung pathology.
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Affiliation(s)
- Stuart Meier
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Tuberculosis Bioinformatics Initiative, Stellenbosch University, Cape Town, South Africa
| | - James A. Seddon
- South African Tuberculosis Bioinformatics Initiative, Stellenbosch University, Cape Town, South Africa
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, Cape Town, South Africa
- Department of Infectious Diseases, Imperial College London, London, United Kingdom
| | - Elizna Maasdorp
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Tuberculosis Bioinformatics Initiative, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, Stellenbosch University, Cape Town, South Africa
| | - Léanie Kleynhans
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
| | - Nelita du Plessis
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
| | - Andre G. Loxton
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
| | - Stephanus T. Malherbe
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
| | - Daniel E. Zak
- Seattle Children’s Research Institute, Center for Global Infectious Disease Research, Seattle, WA, United States of America
| | - Ethan Thompson
- Seattle Children’s Research Institute, Center for Global Infectious Disease Research, Seattle, WA, United States of America
| | - Fergal J. Duffy
- Seattle Children’s Research Institute, Center for Global Infectious Disease Research, Seattle, WA, United States of America
| | - Stefan H. E. Kaufmann
- Max Planck Institute for Infection Biology, Berlin, Germany
- Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Hagler Institute for Advanced Study, Texas A&M University, College Station, TX, United States of America
| | - Tom H. M. Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Thomas J. Scriba
- South African Tuberculosis Vaccine Initiative, Institute of Infectious Disease and Molecular Medicine and Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Sara Suliman
- South African Tuberculosis Vaccine Initiative, Institute of Infectious Disease and Molecular Medicine and Division of Immunology, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Jayne S. Sutherland
- Vaccines & Immunity Theme, Medical Research Council Unit, The Gambia, at the London School of Hygiene and Tropical Medicine, Banjul, The Gambia
| | - Jill Winter
- Catalysis Foundation for Health, San Ramon, CA, United States of America
| | - Helena Kuivaniemi
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
| | - Gerhard Walzl
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Tuberculosis Bioinformatics Initiative, Stellenbosch University, Cape Town, South Africa
| | - Gerard Tromp
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
- DSI–NRF Centre of Excellence for Biomedical Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Medical Research Council Centre for Tuberculosis Research, Stellenbosch University, Cape Town, South Africa
- South African Tuberculosis Bioinformatics Initiative, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, Stellenbosch University, Cape Town, South Africa
- * E-mail:
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18
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Vymazal O, Bendíčková K, De Zuani M, Vlková M, Hortová-Kohoutková M, Frič J. Immunosuppression Affects Neutrophil Functions: Does Calcineurin-NFAT Signaling Matter? Front Immunol 2021; 12:770515. [PMID: 34795676 PMCID: PMC8593005 DOI: 10.3389/fimmu.2021.770515] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/19/2021] [Indexed: 11/17/2022] Open
Abstract
Neutrophils are innate immune cells with important roles in antimicrobial defense. However, impaired or dysregulated neutrophil function can result in host tissue damage, loss of homeostasis, hyperinflammation or pathological immunosuppression. A central link between neutrophil activation and immune outcomes is emerging to be the calcineurin-nuclear factor of activated T cells (NFAT) signaling pathway, which is activated by neutrophil detection of a microbial threat via pattern recognition receptors and results in inflammatory cytokine production. This potent pro-inflammatory pathway is also the target of several immunosuppressive drugs used for the treatment of autoimmune disorders, during solid organ and hematopoietic cell transplantations, and as a part of anti-cancer therapy: but what effects these drugs have on neutrophil function, and their broader consequences for immune homeostasis and microbial defense are not yet known. Here, we bring together the emerging literature describing pathology- and drug- induced neutrophil impairment, with particular focus on their effects on calcineurin-NFAT signaling in the innate immune compartment.
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Affiliation(s)
- Ondřej Vymazal
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia.,Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Kamila Bendíčková
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia
| | - Marco De Zuani
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia
| | - Marcela Vlková
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czechia.,Department of Clinical Immunology and Allergology, St. Anne´s University Hospital, Brno, Czechia
| | | | - Jan Frič
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czechia.,Department of Modern Immunotherapy, Institute of Hematology and Blood Transfusion, Prague, Czechia
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19
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Tavares IF, Dos Santos JB, Pacheco FDS, Gandini M, Mariante RM, Rodrigues TF, Sales AM, Moraes MO, Sarno EN, Schmitz V. Mycobacterium leprae Induces Neutrophilic Degranulation and Low-Density Neutrophil Generation During Erythema Nodosum Leprosum. Front Med (Lausanne) 2021; 8:711623. [PMID: 34692720 PMCID: PMC8531262 DOI: 10.3389/fmed.2021.711623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/09/2021] [Indexed: 11/13/2022] Open
Abstract
Erythema Nodosum Leprosum (ENL) is a recurrent acute inflammatory complication of leprosy affecting up to 50% of all Borderline Lepromatous and Lepromatous Leprosy (BL/LL) patients. Although ENL is described as an immune reaction mediated by neutrophils, studies demonstrating the direct role of neutrophils in ENL are still rare. One subpopulation of low-density neutrophils (LDNs), present within the fraction of peripheral blood mononuclear cells (PBMC), has been associated with the pathogenesis and severity of diseases like sepsis, lupus, and tuberculosis. We herein analyzed LDNs and high-density neutrophils (HDNs) in terms of frequency, phenotype, and morphology. Serum levels of MMP-9 (a neutrophilic degranulation marker) were evaluated by ELISA; and LDNs were generated in vitro by stimulating healthy-donor, whole-blood cultures. PBMC layers of ENL patients presented segmented/hypersegmented cells that were morphologically compatible with neutrophils. Immunofluorescence analyses identified LDNs in ENL. Flow cytometry confirmed the elevated frequency of circulating LDNs (CD14−CD15+) in ENL patients compared to healthy donors and nonreactional Borderline Tuberculoid (BT) patients. Moreover, flow cytometry analyses revealed that ENL LDNs had a neutrophilic-activated phenotype. ENL patients under thalidomide treatment presented similar frequency of LDNs as observed before treatment but its activation status was lower. In addition, Mycobacterium leprae induced in vitro generation of LDNs in whole blood in a dose-dependent fashion; and TGF-β, an inhibitor of neutrophilic degranulation, prevented LDNs generation. MMP-9 serum levels of BL/LL patients with or without ENL correlated with LDNs frequency at the same time that ultrastructural observations of ENL LDNs showed suggestive signs of degranulation. Together, our data provide new insights into the knowledge and understanding of the pathogenesis of ENL while enriching the role of neutrophils in leprosy.
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Affiliation(s)
| | | | | | - Mariana Gandini
- Laboratory of Cellular Microbiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Rafael M Mariante
- Laboratory of Structural Biology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Anna Maria Sales
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Milton Ozório Moraes
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Euzenir Nunes Sarno
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Veronica Schmitz
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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20
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Leite GGF, Ferreira BL, Tashima AK, Nishiduka ES, Cunha-Neto E, Brunialti MKC, Assuncao M, Azevedo LCP, Freitas F, van der Poll T, Scicluna BP, Salomão R. Combined Transcriptome and Proteome Leukocyte's Profiling Reveals Up-Regulated Module of Genes/Proteins Related to Low Density Neutrophils and Impaired Transcription and Translation Processes in Clinical Sepsis. Front Immunol 2021; 12:744799. [PMID: 34594344 PMCID: PMC8477441 DOI: 10.3389/fimmu.2021.744799] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 08/24/2021] [Indexed: 01/20/2023] Open
Abstract
Sepsis is a global health emergency, which is caused by various sources of infection that lead to changes in gene expression, protein-coding, and metabolism. Advancements in “omics” technologies have provided valuable tools to unravel the mechanisms involved in the pathogenesis of this disease. In this study, we performed shotgun mass spectrometry in peripheral blood mononuclear cells (PBMC) from septic patients (N=24) and healthy controls (N=9) and combined these results with two public microarray leukocytes datasets. Through combination of transcriptome and proteome profiling, we identified 170 co‐differentially expressed genes/proteins. Among these, 122 genes/proteins displayed the same expression trend. Ingenuity Pathway Analysis revealed pathways related to lymphocyte functions with decreased status, and defense processes that were predicted to be strongly increased. Protein-protein interaction network analyses revealed two densely connected regions, which mainly included down‐regulated genes/proteins that were related to the transcription of RNA, translation of proteins, and mitochondrial translation. Additionally, we identified one module comprising of up‐regulated genes/proteins, which were mainly related to low-density neutrophils (LDNs). LDNs were reported in sepsis and in COVID-19. Changes in gene expression level were validated using quantitative real-time PCR in PBMCs from patients with sepsis. To further support that the source of the upregulated module of genes/proteins found in our results were derived from LDNs, we identified an increase of this population by flow cytometry in PBMC samples obtained from the same cohort of septic patients included in the proteomic analysis. This study provides new insights into a reprioritization of biological functions in response to sepsis that involved a transcriptional and translational shutdown of genes/proteins, with exception of a set of genes/proteins related to LDNs and host‐defense system.
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Affiliation(s)
- Giuseppe Gianini Figueirêdo Leite
- Division of Infectious Diseases, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, São Paulo, Brazil
| | - Bianca Lima Ferreira
- Division of Infectious Diseases, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, São Paulo, Brazil
| | - Alexandre Keiji Tashima
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, São Paulo, Brazil
| | - Erika Sayuri Nishiduka
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, São Paulo, Brazil
| | - Edecio Cunha-Neto
- Laboratorio de Imunologia, Instituto do Coracao, Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil
| | - Milena Karina Colo Brunialti
- Division of Infectious Diseases, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, São Paulo, Brazil
| | - Murillo Assuncao
- Intensive Care Unit, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | | | - Flávio Freitas
- Intensive Care Unit, Hospital São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Division of Infectious Diseases, Amsterdam University Medical Centers, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Brendon P Scicluna
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Centers, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Department of Applied Biomedical Sciences, Faculty of Health Sciences, Mater Dei hospital, University of Malta, Msida, Malta
| | - Reinaldo Salomão
- Division of Infectious Diseases, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, São Paulo, Brazil
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21
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Schenz J, Obermaier M, Uhle S, Weigand MA, Uhle F. Low-Density Granulocyte Contamination From Peripheral Blood Mononuclear Cells of Patients With Sepsis and How to Remove It - A Technical Report. Front Immunol 2021; 12:684119. [PMID: 34484182 PMCID: PMC8416421 DOI: 10.3389/fimmu.2021.684119] [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: 03/22/2021] [Accepted: 08/02/2021] [Indexed: 12/29/2022] Open
Abstract
Elucidating the mechanisms contributing to the dysregulated host response to infection as part of the syndrome is a current challenge in sepsis research. Peripheral blood mononuclear cells are widely used in immunological studies. Density gradient centrifugation, a common method, is of limited use for blood drawn from patients with sepsis. A significant number of low-density granulocytes co-purify contributing to low purity of isolated peripheral blood mononuclear cells. Whole blood anticoagulated with lithium heparin was drawn from patients with sepsis (n=14) and healthy volunteers (n=11). Immediately after drawing, the plasma fraction was removed and PBMC were isolated from the cellular fraction by density gradient centrifugation. Samples derived from patients with sepsis were subsequently incubated with cluster of differentiation 15 MicroBeads and granulocytes were depleted using magnetic-activated cell sorting. Core cellular functions as antigen presentation and cytokine secretion were analyzed in cells isolated from healthy volunteers (n=3) before and after depletion to confirm consistent functionality. We report here that depleting CD15+ cells after density gradient centrifugation is a feasible way to get rid of the low-density granulocyte contamination. Afterwards, the purity of isolated, functionally intact peripheral blood mononuclear cells is comparable to healthy volunteers. Information on the isolation purity and identification of the containing cell types are necessary for good comparability between different studies. Depletion of CD15+ cells after density gradient centrifugation is an easy but highly efficient way to gain a higher quality and more reliability in studies using peripheral blood mononuclear cells from septic patients without affecting the functionality of the cells.
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Affiliation(s)
- Judith Schenz
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Manuel Obermaier
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Sandra Uhle
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Florian Uhle
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
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22
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The Enigma of Low-Density Granulocytes in Humans: Complexities in the Characterization and Function of LDGs during Disease. Pathogens 2021; 10:pathogens10091091. [PMID: 34578124 PMCID: PMC8470838 DOI: 10.3390/pathogens10091091] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 12/17/2022] Open
Abstract
Low-density granulocytes (LDGs) have been characterized as important immune cells during healthy and disease states in humans, including microbial infections, cancer, and autoimmune dysfunction. However, the classification of this cell type is similar to other immune cells (e.g., neutrophils, myeloid-derived suppressor cells) and ambiguous functional standards have rendered LDG identification and isolation daunting. Furthermore, most research involving LDGs has mainly focused on adult cells and subjects, leaving increased uncertainty surrounding younger populations, especially in vulnerable neonatal groups where LDG numbers are elevated. This review aims to bring together the current research in the field of LDG biology in the context of immunity to disease, with a focus on infection. In addition, we propose to highlight the gaps in the field that, if filled, could improve upon isolation techniques and functional characterizations for LDGs separate from neutrophils and myeloid-derived suppressor cells (MDSCs). This will not only enhance understanding of LDGs during disease processes and how they differ from other cell types but will also aid in the interpretation of comparative studies and results with the potential to inform development of novel therapeutics to improve disease states in patients.
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23
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Valadez-Cosmes P, Maitz K, Kindler O, Raftopoulou S, Kienzl M, Santiso A, Mihalic ZN, Brcic L, Lindenmann J, Fediuk M, Pichler M, Schicho R, Houghton AM, Heinemann A, Kargl J. Identification of Novel Low-Density Neutrophil Markers Through Unbiased High-Dimensional Flow Cytometry Screening in Non-Small Cell Lung Cancer Patients. Front Immunol 2021; 12:703846. [PMID: 34484199 PMCID: PMC8414579 DOI: 10.3389/fimmu.2021.703846] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/15/2021] [Indexed: 12/15/2022] Open
Abstract
Neutrophils have been described as a phenotypically heterogeneous cell type that possess both pro- and anti-tumor properties. Recently, a subset of neutrophils isolated from the peripheral blood mononuclear cell (PBMC) fraction has been described in cancer patients. These low-density neutrophils (LDNs) show a heterogeneous maturation state and have been associated with pro-tumor properties in comparison to mature, high-density neutrophils (HDNs). However, additional studies are necessary to characterize this cell population. Here we show new surface markers that allow us to discriminate between LDNs and HDNs in non-small cell lung cancer (NSCLC) patients and assess their potential as diagnostic/prognostic tool. LDNs were highly enriched in NSCLC patients (median=20.4%, range 0.3-76.1%; n=26) but not in healthy individuals (median=0.3%, range 0.1-3.9%; n=14). Using a high-dimensional human cell surface marker screen, we identified 12 surface markers that were downregulated in LDNs when compared to HDNs, while 41 surface markers were upregulated in the LDN subset. Using flow cytometry, we confirmed overexpression of CD36, CD41, CD61 and CD226 in the LDN fraction. In summary, our data support the notion that LDNs are a unique neutrophil population and provide novel targets to clarify their role in tumor progression and their potential as diagnostic and therapeutic tool.
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Affiliation(s)
- Paulina Valadez-Cosmes
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Kathrin Maitz
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Oliver Kindler
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Sofia Raftopoulou
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Melanie Kienzl
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
| | - Ana Santiso
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Zala Nikita Mihalic
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Luka Brcic
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Jörg Lindenmann
- Division of Thoracic and Hyperbaric Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Melanie Fediuk
- Division of Thoracic and Hyperbaric Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Martin Pichler
- Division of Oncology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Rudolf Schicho
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
| | - A. McGarry Houghton
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
- Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle, WA, United States
| | - Akos Heinemann
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
| | - Julia Kargl
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
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24
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Domerecka W, Kowalska-Kępczyńska A, Michalak A, Homa-Mlak I, Mlak R, Cichoż-Lach H, Małecka-Massalska T. Etiopathogenesis and Diagnostic Strategies in Autoimmune Hepatitis. Diagnostics (Basel) 2021; 11:diagnostics11081418. [PMID: 34441353 PMCID: PMC8393562 DOI: 10.3390/diagnostics11081418] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/29/2021] [Accepted: 08/03/2021] [Indexed: 01/10/2023] Open
Abstract
Autoimmune hepatitis (AIH) is a chronic liver disease with the incidence of 10 to 17 per 100,000 people in Europe. It affects people of any age, but most often occurs in the 40-60 age group. The clinical picture is varied, from asymptomatic to severe acute hepatitis or liver failure. The disease onset is probably associated with the impaired function of T lymphocytes, the development of molecular mimicry, intestinal dysbiosis, or infiltration with low density neutrophils, which, alongside autoantibodies (i.e., ANA, ASMA), implicate the formation of neutrophil extracellular traps (NETs), as a component of the disease process, and mediate the inappropriate immune response. AIH is characterized with an increased activity of aminotransferases, elevated concentration of serum immunoglobulin G, the presence of circulating autoantibodies and liver inflammation. The result of the histological examination of the liver and the presence of autoantibodies, although not pathognomonic, still remain a distinguishing feature. The diagnosis of AIH determines lifelong treatment in most patients. The treatment is implemented to prevent the development of cirrhosis and end-stage liver failure. This work focuses mainly on the etiopathogenesis and diagnosis of AIH.
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Affiliation(s)
- Weronika Domerecka
- Chair and Department of Human Physiology, Medical University of Lublin, 20-080 Lublin, Poland
| | - Anna Kowalska-Kępczyńska
- Department of Biochemical Diagnostics, Chair of Laboratory Diagnostics, Medical University of Lublin, 20-081 Lublin, Poland
| | - Agata Michalak
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, 20-090 Lublin, Poland
| | - Iwona Homa-Mlak
- Chair and Department of Human Physiology, Medical University of Lublin, 20-080 Lublin, Poland
| | - Radosław Mlak
- Chair and Department of Human Physiology, Medical University of Lublin, 20-080 Lublin, Poland
| | - Halina Cichoż-Lach
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, 20-090 Lublin, Poland
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25
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Blanco-Camarillo C, Alemán OR, Rosales C. Low-Density Neutrophils in Healthy Individuals Display a Mature Primed Phenotype. Front Immunol 2021; 12:672520. [PMID: 34276661 PMCID: PMC8285102 DOI: 10.3389/fimmu.2021.672520] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 06/21/2021] [Indexed: 12/12/2022] Open
Abstract
Neutrophils are the most abundant leukocytes in human peripheral blood, comprising about 70% of all leukocytes. They are regarded as the first line of defense of the innate immune system, but neutrophils have also the ability of regulating the adaptive immune response. Recently, However, multiple phenotypes and functional states of neutrophils have been reported, particularly in inflammation, autoimmunity, and cancer. One possible subtype of neutrophils, the so-called low-density neutrophils (LDN) is found among mononuclear cells (MNC), monocytes and lymphocytes, after separating the leukocytes from blood by density gradient centrifugation. LDN increase in numbers during several pathological conditions. However, LDN present in healthy conditions have not been investigated further. Therefore, in order to confirm the presence of LDN in blood of healthy individuals and to explore some of their cellular functions, neutrophils and MNC were isolated by density gradient centrifugation. Purified neutrophils were further characterized by multicolor flow cytometry (FACS) and then, using the same FACS parameters cells in the MNC fraction were analyzed. Within the MNC, LDN were consistently found. These LDN had a normal mature neutrophil morphology and displayed a CD10+, CD11b+, CD14low, CD15high, CD16bhigh, CD62L+, CD66b+, and CXCR4+ phenotype. These LDN had an enhanced reactive oxygen species (ROS) production and increased phagocytic capacity and were able to produce neutrophil extracellular traps (NET) similarly to neutrophils. These data confirm the presence of a small number of LDN is blood of healthy individuals and suggest that these LDN represent mature cells with a primed phenotype.
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Affiliation(s)
- Carlos Blanco-Camarillo
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Omar Rafael Alemán
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Rosales
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
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26
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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.
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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
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27
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McKenna E, Mhaonaigh AU, Wubben R, Dwivedi A, Hurley T, Kelly LA, Stevenson NJ, Little MA, Molloy EJ. Neutrophils: Need for Standardized Nomenclature. Front Immunol 2021; 12:602963. [PMID: 33936029 PMCID: PMC8081893 DOI: 10.3389/fimmu.2021.602963] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 03/17/2021] [Indexed: 12/15/2022] Open
Abstract
Neutrophils are the most abundant innate immune cell with critical anti-microbial functions. Since the discovery of granulocytes at the end of the nineteenth century, the cells have been given many names including phagocytes, polymorphonuclear neutrophils (PMN), granulocytic myeloid derived suppressor cells (G-MDSC), low density neutrophils (LDN) and tumor associated neutrophils (TANS). This lack of standardized nomenclature for neutrophils suggest that biologically distinct populations of neutrophils exist, particularly in disease, when in fact these may simply be a manifestation of the plasticity of the neutrophil as opposed to unique populations. In this review, we profile the surface markers and granule expression of each stage of granulopoiesis to offer insight into how each stage of maturity may be identified. We also highlight the remarkable surface marker expression profiles between the supposed neutrophil populations.
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Affiliation(s)
- Ellen McKenna
- Discipline of Paediatrics, Trinity College, The University of Dublin, Dublin, Ireland.,Paediatric Research Laboratory, Trinity Translational Medicine Institute (TTMI), St James' Hospital, Dublin, Ireland
| | | | - Richard Wubben
- Viral Immunology Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Amrita Dwivedi
- Trinity Health Kidney Centre, TTMI, Trinity College, Dublin, Ireland
| | - Tim Hurley
- Discipline of Paediatrics, Trinity College, The University of Dublin, Dublin, Ireland.,Paediatric Research Laboratory, Trinity Translational Medicine Institute (TTMI), St James' Hospital, Dublin, Ireland.,Neonatology, Coombe Women and Infant's University Hospital, Dublin, Ireland
| | - Lynne A Kelly
- Discipline of Paediatrics, Trinity College, The University of Dublin, Dublin, Ireland.,Paediatric Research Laboratory, Trinity Translational Medicine Institute (TTMI), St James' Hospital, Dublin, Ireland.,National Children's Research Centre, Dublin, Ireland
| | - Nigel J Stevenson
- Viral Immunology Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Dublin, Ireland.,Viral Immunology Group, Royal College of Surgeons in Ireland-Medical University of Bahrain, Zallaq, Bahrain
| | - Mark A Little
- Trinity Health Kidney Centre, TTMI, Trinity College, Dublin, Ireland.,Irish Centre for Vascular Biology, Trinity College Dublin, Dublin, Ireland
| | - Eleanor J Molloy
- Discipline of Paediatrics, Trinity College, The University of Dublin, Dublin, Ireland.,Paediatric Research Laboratory, Trinity Translational Medicine Institute (TTMI), St James' Hospital, Dublin, Ireland.,Neonatology, Coombe Women and Infant's University Hospital, Dublin, Ireland.,National Children's Research Centre, Dublin, Ireland.,Neonatology, Children's Hospital Ireland (CHI) at Crumlin, Dublin, Ireland.,Paediatrics, CHI at Tallaght, Tallaght University Hospital, Dublin, Ireland
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28
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Older but Not Wiser: the Age-Driven Changes in Neutrophil Responses during Pulmonary Infections. Infect Immun 2021; 89:IAI.00653-20. [PMID: 33495271 DOI: 10.1128/iai.00653-20] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Elderly individuals are at increased risk of life-threatening pulmonary infections. Neutrophils are a key determinant of the disease course of pathogen-induced pneumonia. Optimal host defense balances initial robust pulmonary neutrophil responses to control pathogen numbers, ultimately followed by the resolution of inflammation to prevent pulmonary damage. Recent evidence suggests that phenotypic and functional heterogeneity in neutrophils impacts host resistance to pulmonary pathogens. Apart from their apparent role in innate immunity, neutrophils also orchestrate subsequent adaptive immune responses during infection. Thus, the outcome of pulmonary infections can be shaped by neutrophils. This review summarizes the age-driven impairment of neutrophil responses and the contribution of these cells to the susceptibility of the elderly to pneumonia. We describe how aging is accompanied by changes in neutrophil recruitment, resolution, and function. We discuss how systemic and local changes alter the neutrophil phenotype in aged hosts. We highlight the gap in knowledge of whether these changes in neutrophils also contribute to the decline in adaptive immunity seen with age. We further detail the factors that drive dysregulated neutrophil responses in the elderly and the pathways that may be targeted to rebalance neutrophil activity and boost host resistance to pulmonary infections.
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29
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Rao J, Su R, Peng Y, Guo Y, Huang Z, Ye Y, Gao Y, Liu J, Zhang L, Luo Q, Li J. Low-Density Granulocytes Affect T-SPOT.TB Assay by Inhibiting the Production of Interferon-γ in T Cells via PD-L1/PD-1 Pathway. Front Microbiol 2021; 11:622389. [PMID: 33584591 PMCID: PMC7876290 DOI: 10.3389/fmicb.2020.622389] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/21/2020] [Indexed: 01/10/2023] Open
Abstract
Background T-SPOT TB (T-SPOT) assay is widely used for detection of Mycobacterium tuberculosis infection that is based on the detection of M. tuberculosis-specific interferon-γ-secreting T cells (ISCs) in peripheral blood mononuclear cells (PBMCs). Recently, high frequencies of low-density granulocytes (LDGs) were found in the PBMCs of tuberculosis patients. Whether these LDGs affect the detection of T-SPOT has not been investigated. The impact of LDGs on T-SPOT assay and related mechanism were investigated in this study. Methods The correlations between the frequencies of LDGs and the results of T-SPOT were analyzed. T-SPOT with LDG-removed PBMCs and PBMCs with exogenous addition of LDGs were performed. The possible mechanism was explored by detecting the levels of negative immune regulatory molecules on LDGs. The impact of programmed death ligand 1 (PD-L1) on T-SPOT was evaluated and confirmed by function blocking with neutralizing antibody. Results The positive rates of T-SPOT and ISCs in tuberculosis patients with low LDGs frequency (n = 22) were significantly higher than those with high LDGs frequency (n = 39). Removal or exogenous addition of LDGs significantly increased or decreased the ISCs and the positive rate of T-SPOT. The frequencies of interferon-γ-producing T cells were negatively correlated with the frequencies of LDGs. The expression of PD-L1 was significantly elevated on LDGs. Pretreatment of LDGs with anti-PD-L1 antibody significantly counteracted the impact of LDGs on T-SPOT. Treatment of PBMCs with anti-PD-L1 antibody resulted in comparable ISCs with that of LDG removal. Conclusion LDGs can inhibit the production of interferon-γ in T cells and decrease the positive rated of T-SPOT assay via highly expressed PD-L1.
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Affiliation(s)
- Jiayue Rao
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rigu Su
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yiping Peng
- Department of Tuberculosis, Jiangxi Chest Hospital, Nanchang, China
| | - Yang Guo
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zikun Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yutao Ye
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yujie Gao
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jun Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lu Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qing Luo
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Junming Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
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30
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Lovewell RR, Baer C, Mishra BB, Smith CM, Sassetti CM. Granulocytes act as a niche for Mycobacterium tuberculosis growth. Mucosal Immunol 2021; 14:229-241. [PMID: 32483198 PMCID: PMC7704924 DOI: 10.1038/s41385-020-0300-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/10/2020] [Accepted: 04/23/2020] [Indexed: 02/04/2023]
Abstract
Granulocyte recruitment to the pulmonary compartment is a hallmark of progressive tuberculosis (TB). This process is well-documented to promote immunopathology, but can also enhance the replication of the pathogen. Both the specific granulocytes responsible for increasing mycobacterial burden and the underlying mechanisms remain obscure. We report that the known immunomodulatory effects of these cells, such as suppression of protective T-cell responses, play a limited role in altering host control of mycobacterial replication in susceptible mice. Instead, we find that the adaptive immune response preferentially restricts the burden of bacteria within monocytes and macrophages compared to granulocytes. Specifically, mycobacteria within inflammatory lesions are preferentially found within long-lived granulocytes that express intermediate levels of the Ly6G marker and low levels of antimicrobial genes. These cells progressively accumulate in the lung and correlate with bacterial load and disease severity, and the ablation of Ly6G-expressing cells lowers mycobacterial burden. These observations suggest a model in which dysregulated granulocytic influx promotes disease by creating a permissive intracellular niche for mycobacterial growth and persistence.
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Affiliation(s)
- Rustin R. Lovewell
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School. Worcester, MA, 01655, USA
| | - Christina Baer
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School. Worcester, MA, 01655, USA
| | - Bibhuti B. Mishra
- Department of Immunology and Microbial Disease, Albany Medical College. Albany, NY, 12208, USA
| | - Clare M. Smith
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School. Worcester, MA, 01655, USA
| | - Christopher M. Sassetti
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School. Worcester, MA, 01655, USA,Corresponding author. Christopher M Sassetti, Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, 368 Plantation St. AS8-2051, Worcester, MA 01655, Ph: 508-856-3678, Fax:508-856-3952,
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31
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Weinhage T, Kölsche T, Rieger-Fackeldey E, Schmitz R, Antoni AC, Ahlmann M, Foell D, Wittkowski H. Cord Blood Low-Density Granulocytes Correspond to an Immature Granulocytic Subset with Low Expression of S100A12. THE JOURNAL OF IMMUNOLOGY 2020; 205:56-66. [PMID: 32444390 DOI: 10.4049/jimmunol.1901308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 04/22/2020] [Indexed: 12/22/2022]
Abstract
Although substantial progress has been achieved concerning neonatal sepsis, its lethality remains considerably high, and further insights into peculiarities and malfunctions of neonatal immunity are needed. This study aims to contribute to a better understanding of the role of human neonatal granulocyte subpopulations and calgranulin C (S100A12). For this purpose, we gathered 136 human cord blood (CB) samples. CD66b+ CB low-density granulocytes (LDG) and CB normal-density granulocytes were isolated and functionally and phenotypically compared with healthy adult control granulocytes. We could identify CB-LDG as CD66bbright CD64high CD16low CD35low CD10low S100A12med-low and, based on these markers, recovered in whole CB stainings. Consistent with flow cytometric findings, microscopic imaging supported an immature phenotype of CB-LDG with decreased S100A12 expression. In CB serum of healthy neonates, S100A12 was found to be higher in female newborns when compared with males. Additionally, S100A12 levels correlated positively with gestational age independently from sex. We could solidify functional deficits of CB-LDG concerning phagocytosis and generation of neutrophil extracellular traps. Our study reveals that previously described suppressive effects of CB-LDG on CD4+ T cell proliferation are exclusively due to phagocytosis of stimulation beads used in cocultures and absent when using soluble or coated Abs. In conclusion, we characterize CB-LDG as immature neutrophils with functional deficits and decreased expression and storage of S100A12. Concerning their cross-talk with the adaptive immunity, we found no direct inhibitory effect of LDG. Neonatal LDG may thus represent a distinct population that differs from LDG populations found in adults.
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Affiliation(s)
- Toni Weinhage
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital Münster, 48149 Münster, Germany
| | - Tristan Kölsche
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital Münster, 48149 Münster, Germany
| | - Esther Rieger-Fackeldey
- Department of Pediatrics, Technical University of Munich, 80804 Munich, Germany.,Department of General Pediatrics, University Children's Hospital Münster, 48149 Münster, Germany
| | - Ralf Schmitz
- Department of Gynecology and Obstetrics, University Hospital Münster, 48149 Münster, Germany
| | - Anne-Charlotte Antoni
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital Münster, 48149 Münster, Germany
| | - Martina Ahlmann
- Department of Pediatric Oncology and Hematology, University Hospital Münster, 48149 Münster, Germany; and
| | - Dirk Foell
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital Münster, 48149 Münster, Germany.,Interdisciplinary Centre of Clinical Research, University of Münster, 48149 Münster, Germany
| | - Helmut Wittkowski
- Department of Pediatric Rheumatology and Immunology, University Children's Hospital Münster, 48149 Münster, Germany;
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32
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Jones BE, Herrera CA, Agosto-Burgos C, Starmer J, Bass WA, Poulton CJ, Blazek L, Henderson CD, Hu Y, Hogan SL, Hu P, Xiao H, Wu EY, Chen DP, Jennette JC, Free ME, Falk RJ, Ciavatta DJ. ANCA autoantigen gene expression highlights neutrophil heterogeneity where expression in normal-density neutrophils correlates with ANCA-induced activation. Kidney Int 2020; 98:744-757. [PMID: 32446935 DOI: 10.1016/j.kint.2020.04.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 03/20/2020] [Accepted: 04/02/2020] [Indexed: 12/27/2022]
Abstract
ANCA vasculitis is an autoimmune disease with increased expression of the autoantigen genes, myeloperoxidase (MPO) and proteinase 3 (PRTN3), but the origin and significance of expression is less distinct. To clarify this, we measured MPO and PRTN3 messenger RNA in monocytes, normal-density neutrophils, and in enriched leukocytes from peripheral blood mononuclear cells. Increased autoantigen gene expression was detected in normal-density neutrophils and enriched leukocytes from patients during active disease compared to healthy individuals, with the largest difference in enriched leukocytes. RNA-seq of enriched leukocytes comparing active-remission pairs identified a gene signature for low-density neutrophils. Cell sorting revealed low-density neutrophils contained mature and immature neutrophils depending on the presence or absence of CD10. Both populations contributed to autoantigen expression but the frequency of immature cells in low-density neutrophils did not correlate with low-density neutrophil MPO or PRTN3 expression. Low-density neutrophils were refractory to MPO-ANCA induced oxidative burst, suggesting an alternative role for low-density neutrophils in ANCA vasculitis pathogenesis. In contrast, normal-density neutrophils were activated by MPO-ANCA and monoclonal anti-PR3 antibody. Normal-density neutrophil activation correlated with MPO and PRTN3 mRNA. Increased autoantigen gene expression originating from the mature low-density and normal-density neutrophils suggests transcriptional dysregulation is a hallmark of ANCA vasculitis. Thus, the correlation between autoantigen gene expression and antibody-mediated normal-density neutrophil activation connects autoantigen gene expression with disease pathogenesis.
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Affiliation(s)
- Britta E Jones
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Carolina A Herrera
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Christian Agosto-Burgos
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Joshua Starmer
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - William A Bass
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Caroline J Poulton
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Lauren Blazek
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Candace D Henderson
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yichun Hu
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Susan L Hogan
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Peiqi Hu
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Hong Xiao
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Eveline Y Wu
- Division of Pediatric Allergy, Immunology, and Rheumatology, Department of Pediatrics, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Dhruti P Chen
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - J Charles Jennette
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Meghan E Free
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ronald J Falk
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Dominic J Ciavatta
- UNC Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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33
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Hassani M, Hellebrekers P, Chen N, van Aalst C, Bongers S, Hietbrink F, Koenderman L, Vrisekoop N. On the origin of low-density neutrophils. J Leukoc Biol 2020; 107:809-818. [PMID: 32170882 PMCID: PMC7318192 DOI: 10.1002/jlb.5hr0120-459r] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/31/2020] [Accepted: 02/17/2020] [Indexed: 01/01/2023] Open
Abstract
Here we elaborate on the origin of low(er)-density neutrophils (LDNs) to better understand the variation found in literature. Supplemented with original data, we test the hypothesis that buoyant density of neutrophils is characterized by a spectrum that as a whole shifts to a lower density after activation. Both the 20% highest density (HDNs) and 20% lowest density (LDNs) neutrophils from healthy donors were isolated by Percoll of different densities. Using this method we found that LDNs were significantly better in T-cell suppression and bacterial containment than their 20% highest density counterparts. We found no statistically relevant differences in neutrophil survival or bacterial phagocytosis. Stimulation of healthy donor neutrophils with N-formyl-methionyl-leucyl-phenylalanine induced LDNs co-segregating with peripheral blood mononuclear cells after Ficoll separation. These in vitro induced LDNs showed increased activation markers compared to HDNs and were comparable to the activation markers found on the LDN fraction seen in patients with chronic inflammatory conditions such as present in cancer patients. This all fits with the hypothesis that the density of neutrophils is distributed in a spectrum partially coupled to maturation. Additionally a shift in this spectrum can be induced by in vitro stimulation or by activation in disease.
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Affiliation(s)
- Marwan Hassani
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
| | - Pien Hellebrekers
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
- Department of SurgeryUniversity Medical Center UtrechtThe Netherlands
| | - Na Chen
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
| | - Corneli van Aalst
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
| | - Suus Bongers
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
- Department of SurgeryUniversity Medical Center UtrechtThe Netherlands
| | - Falco Hietbrink
- Department of SurgeryUniversity Medical Center UtrechtThe Netherlands
| | - Leo Koenderman
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
| | - Nienke Vrisekoop
- Department of Respiratory Medicine and Center for Translational ImmunologyUniversity Medical Center UtrechtThe Netherlands
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34
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Ostendorf L, Mothes R, van Koppen S, Lindquist RL, Bellmann-Strobl J, Asseyer S, Ruprecht K, Alexander T, Niesner RA, Hauser AE, Paul F, Radbruch H. Low-Density Granulocytes Are a Novel Immunopathological Feature in Both Multiple Sclerosis and Neuromyelitis Optica Spectrum Disorder. Front Immunol 2019; 10:2725. [PMID: 31849944 PMCID: PMC6896820 DOI: 10.3389/fimmu.2019.02725] [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: 08/02/2019] [Accepted: 11/06/2019] [Indexed: 12/30/2022] Open
Abstract
Objective: To investigate whether low-density granulocytes (LDGs) are an immunophenotypic feature of patients with multiple sclerosis (MS) or neuromyelitis optica spectrum disorder (NMOSD). Methods: Blood samples were collected from 20 patients with NMOSD and 17 patients with MS, as well as from 15 patients with Systemic Lupus Erythematosus (SLE) and 23 Healthy Donors (HD). We isolated peripheral blood mononuclear cells (PBMCs) with density gradient separation and stained the cells with antibodies against CD14, CD15, CD16, and CD45, and analyzed the cells by flow cytometry or imaging flow cytometry. We defined LDGs as CD14-CD15high and calculated their share in total PBMC leukocytes (CD45+) as well as the share of CD16hi LDGs. Clinical data on disease course, medication, and antibody status were obtained. Results: LDGs were significantly more common in MS and NMOSD than in HDs, comparable to SLE samples (median values HD 0.2%, MS 0.9%, NMOSD 2.1%, SLE 4.3%). 0/23 of the HDs, but 17/20 NMOSD and 11/17 MS samples as well as 13/15 SLE samples had at least 0.7 % LDGs. NMOSD patients without continuous immunosuppressive treatment had significantly more LDGs compared to their treated counterparts. LDG nuclear morphology ranged from segmented to rounded, suggesting a heterogeneity within the group. Conclusion: LDGs are a feature of the immunophenotype in some patients with MS and NMOSD.
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Affiliation(s)
- Lennard Ostendorf
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Immunodynamics, Deutsches Rheuma-Forschungszentrum Berlin, A Leibniz Institute, Berlin, Germany
| | - Ronja Mothes
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Biophysical Analysis, Deutsches Rheuma-Forschungszentrum Berlin, A Leibniz Institute, Berlin, Germany
| | - Sofie van Koppen
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Biophysical Analysis, Deutsches Rheuma-Forschungszentrum Berlin, A Leibniz Institute, Berlin, Germany
| | - Randall L. Lindquist
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Department of Nuclear Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Judith Bellmann-Strobl
- NeuroCure Clinical Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Department of Neurology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Susanna Asseyer
- NeuroCure Clinical Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine & Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt – Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, United Kingdom
| | - Klemens Ruprecht
- Department of Neurology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Clinical and Experimental Multiple Sclerosis Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Tobias Alexander
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Raluca A. Niesner
- Biophysical Analysis, Deutsches Rheuma-Forschungszentrum Berlin, A Leibniz Institute, Berlin, Germany
- Fachbereich Veterinärmedizin, Institute of Veterinary Physiology, Freie Universität Berlin, Berlin, Germany
| | - Anja E. Hauser
- Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Immunodynamics, Deutsches Rheuma-Forschungszentrum Berlin, A Leibniz Institute, Berlin, Germany
| | - Friedemann Paul
- NeuroCure Clinical Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Department of Neurology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine & Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt – Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
- Clinical and Experimental Multiple Sclerosis Research Center, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Helena Radbruch
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
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35
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La Manna MP, Orlando V, Paraboschi EM, Tamburini B, Di Carlo P, Cascio A, Asselta R, Dieli F, Caccamo N. Mycobacterium tuberculosis Drives Expansion of Low-Density Neutrophils Equipped With Regulatory Activities. Front Immunol 2019; 10:2761. [PMID: 31849955 PMCID: PMC6892966 DOI: 10.3389/fimmu.2019.02761] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/12/2019] [Indexed: 11/19/2022] Open
Abstract
In human tuberculosis (TB) neutrophils represent the most commonly infected phagocyte but their role in protection and pathology is highly contradictory. Moreover, a subset of low-density neutrophils (LDNs) has been identified in TB, but their functions remain unclear. Here, we have analyzed total neutrophils and their low-density and normal-density (NDNs) subsets in patients with active TB disease, in terms of frequency, phenotype, functional features, and gene expression signature. Full-blood counts from Healthy Donors (H.D.), Latent TB infected, active TB, and cured TB patients were performed. Frequency, phenotype, burst activity, and suppressor T cell activity of the two different subsets were assessed by flow cytometry while NETosis and phagocytosis were evaluated by confocal microscopy. Expression analysis was performed by using the semi-quantitative RT-PCR array technology. Elevated numbers of total neutrophils and a high neutrophil/lymphocyte ratio distinguished patients with active TB from all the other groups. PBMCs of patients with active TB disease contained elevated percentages of LDNs compared with those of H.D., with an increased expression of CD66b, CD33, CD15, and CD16 compared to NDNs. Transcriptomic analysis of LDNs and NDNs purified from the peripheral blood of TB patients identified 12 genes differentially expressed: CCL5, CCR5, CD4, IL10, LYZ, and STAT4 were upregulated, while CXCL8, IFNAR1, NFKB1A, STAT1, TICAM1, and TNF were downregulated in LDNs, as compared to NDNs. Differently than NDNs, LDNs failed to phagocyte live Mycobacterium tuberculosis (M. tuberculosis) bacilli, to make oxidative burst and NETosis, but caused significant suppression of antigen-specific and polyclonal T cell proliferation which was partially mediated by IL-10. These insights add a little dowel of knowledge in understanding the pathogenesis of human TB.
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Affiliation(s)
- Marco Pio La Manna
- Central Laboratory of Advanced Diagnosis and Biomedical Research, University of Palermo, Palermo, Italy.,Department of Biomedicine, Neurosciences and Advanced Diagnostic, University of Palermo, Palermo, Italy
| | - Valentina Orlando
- Central Laboratory of Advanced Diagnosis and Biomedical Research, University of Palermo, Palermo, Italy.,Department of Biomedicine, Neurosciences and Advanced Diagnostic, University of Palermo, Palermo, Italy
| | | | - Bartolo Tamburini
- Central Laboratory of Advanced Diagnosis and Biomedical Research, University of Palermo, Palermo, Italy.,Department of Biomedicine, Neurosciences and Advanced Diagnostic, University of Palermo, Palermo, Italy
| | - Paola Di Carlo
- Department of Sciences for Health Promotion and Mother-Child Care "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Antonio Cascio
- Department of Sciences for Health Promotion and Mother-Child Care "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Rosanna Asselta
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.,Humanitas Clinical and Research Center-IRCCS, Milan, Italy
| | - Francesco Dieli
- Central Laboratory of Advanced Diagnosis and Biomedical Research, University of Palermo, Palermo, Italy.,Department of Biomedicine, Neurosciences and Advanced Diagnostic, University of Palermo, Palermo, Italy
| | - Nadia Caccamo
- Central Laboratory of Advanced Diagnosis and Biomedical Research, University of Palermo, Palermo, Italy.,Department of Biomedicine, Neurosciences and Advanced Diagnostic, University of Palermo, Palermo, Italy
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36
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Ui Mhaonaigh A, Coughlan AM, Dwivedi A, Hartnett J, Cabral J, Moran B, Brennan K, Doyle SL, Hughes K, Lucey R, Floudas A, Fearon U, McGrath S, Cormican S, De Bhailis A, Molloy EJ, Brady G, Little MA. Low Density Granulocytes in ANCA Vasculitis Are Heterogenous and Hypo-Responsive to Anti-Myeloperoxidase Antibodies. Front Immunol 2019; 10:2603. [PMID: 31781107 PMCID: PMC6856659 DOI: 10.3389/fimmu.2019.02603] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/21/2019] [Indexed: 01/07/2023] Open
Abstract
Low Density Granulocytes (LDGs), which appear in the peripheral blood mononuclear cell layer of density-separated blood, are seen in cancer, sepsis, autoimmunity, and pregnancy. Their significance in ANCA vasculitis (AAV) is little understood. As these cells bear the autoantigens associated with this condition and have been found to undergo spontaneous NETosis in other diseases, we hypothesized that they were key drivers of vascular inflammation. We found that LDGs comprise a 3-fold higher fraction of total granulocytes in active vs. remission AAV and disease controls. They are heterogeneous, split between cells displaying mature (75%), and immature (25%) phenotypes. Surprisingly, LDGs (unlike normal density granulocytes) are hyporesponsive to anti-myeloperoxidase antibody stimulation, despite expressing myeloperoxidase on their surface. They are characterized by reduced CD16, CD88, and CD10 expression, higher LOX-1 expression and immature nuclear morphology. Reduced CD16 expression is like that observed in the LDG population in umbilical cord blood and in granulocytes of humanized mice treated with G-CSF. LDGs in AAV are thus a mixed population of mature and immature neutrophils. Their poor response to anti-MPO stimulation suggests that, rather than being a primary driver of AAV pathogenesis, LDGs display characteristics consistent with generic emergency granulopoiesis responders in the context of acute inflammation.
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Affiliation(s)
- Aisling Ui Mhaonaigh
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Alice M Coughlan
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Amrita Dwivedi
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Jack Hartnett
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Joana Cabral
- The Regenerative Medicine Institute (REMEDI), National University of Ireland, Galway, Ireland
| | - Barry Moran
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Kiva Brennan
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland.,National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
| | - Sarah L Doyle
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland.,National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
| | - Katherine Hughes
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Rosemary Lucey
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Achilleas Floudas
- Molecular Rheumatology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Ursula Fearon
- Molecular Rheumatology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Susan McGrath
- The Regenerative Medicine Institute (REMEDI), National University of Ireland, Galway, Ireland
| | - Sarah Cormican
- The Regenerative Medicine Institute (REMEDI), National University of Ireland, Galway, Ireland
| | - Aine De Bhailis
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Eleanor J Molloy
- Department of Paediatrics, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Gareth Brady
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
| | - Mark A Little
- Trinity Health Kidney Centre, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland.,Irish Centre for Vascular Biology, Trinity College Dublin, Dublin, Ireland
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Su R, Peng YP, Deng Z, Deng YT, Ye JQ, Guo Y, Huang ZK, Luo Q, Jiang H, Li JM. Mycobacterium tuberculosis Infection Induces Low-Density Granulocyte Generation by Promoting Neutrophil Extracellular Trap Formation via ROS Pathway. Front Microbiol 2019; 10:1468. [PMID: 31354639 PMCID: PMC6637951 DOI: 10.3389/fmicb.2019.01468] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 06/12/2019] [Indexed: 12/16/2022] Open
Abstract
The roles and characteristics of low-density granulocytes (LDGs) have recently attracted attention; however, the mechanism of the formation of LDGs is yet unclear. In one of our previous studies, the frequency of LDGs was significantly elevated in the peripheral blood of tuberculosis patients, and in situ activation contributed to the generation of LDGs upon Mycobacterium tuberculosis infection. However, the underlying molecular mechanisms are yet to be elucidated. In the present study, the release of neutrophil extracellular traps (NETs) and the levels of ROS were regulated before the normal-density granulocytes (NDGs) to be infected with M. tuberculosis, and the conversion of NDGs to LDGs was monitored subsequently as well. The results showed that tuberculosis-related LDGs spontaneously released high levels of NETs. Promoting the release of NETs led to increase in the conversion of NDGs to LDGs in M. tuberculosis infection, while inhibiting the release of NETs suppressed this conversion after the infection. The M. tuberculosis infection significantly increased the ROS levels in neutrophils and the conversion of NDGs to LDGs. Scavenging ROS or blocking the ROS generation of M. tuberculosis-infected NDGs significantly suppressed the release of NETs and blocked the generation of LDGs. Moreover, inhibiting the formation of NETs without affecting the levels of ROS significantly decreased the conversion of NDGs to LDGs after M. tuberculosis infection. Overall, this study demonstrated that M. tuberculosis could induce the generation of LDGs by promoting the release of NET via ROS pathway.
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Affiliation(s)
- Rigu Su
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yi-Ping Peng
- Department of Tuberculosis, Jiangxi Chest Hospital, Nanchang, China
| | - Zhen Deng
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ya-Ting Deng
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, Changsha, China
| | - Jianq-Qing Ye
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yang Guo
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zi-Kun Huang
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qing Luo
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hong Jiang
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jun-Ming Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
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38
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Kegerreis B, Catalina MD, Bachali P, Geraci NS, Labonte AC, Zeng C, Stearrett N, Crandall KA, Lipsky PE, Grammer AC. Machine learning approaches to predict lupus disease activity from gene expression data. Sci Rep 2019; 9:9617. [PMID: 31270349 PMCID: PMC6610624 DOI: 10.1038/s41598-019-45989-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/04/2019] [Indexed: 12/16/2022] Open
Abstract
The integration of gene expression data to predict systemic lupus erythematosus (SLE) disease activity is a significant challenge because of the high degree of heterogeneity among patients and study cohorts, especially those collected on different microarray platforms. Here we deployed machine learning approaches to integrate gene expression data from three SLE data sets and used it to classify patients as having active or inactive disease as characterized by standard clinical composite outcome measures. Both raw whole blood gene expression data and informative gene modules generated by Weighted Gene Co-expression Network Analysis from purified leukocyte populations were employed with various classification algorithms. Classifiers were evaluated by 10-fold cross-validation across three combined data sets or by training and testing in independent data sets, the latter of which amplified the effects of technical variation. A random forest classifier achieved a peak classification accuracy of 83 percent under 10-fold cross-validation, but its performance could be severely affected by technical variation among data sets. The use of gene modules rather than raw gene expression was more robust, achieving classification accuracies of approximately 70 percent regardless of how the training and testing sets were formed. Fine-tuning the algorithms and parameter sets may generate sufficient accuracy to be informative as a standalone estimate of disease activity.
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Affiliation(s)
- Brian Kegerreis
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA
| | - Michelle D Catalina
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA
| | - Prathyusha Bachali
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA
| | - Nicholas S Geraci
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA
| | - Adam C Labonte
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA
| | - Chen Zeng
- Department of Physics, George Washington University, Washington, DC, 20052, USA
| | - Nathaniel Stearrett
- Computational Biology Institute, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA
| | - Keith A Crandall
- Computational Biology Institute, Milken Institute School of Public Health, George Washington University, Washington, DC, 20052, USA
| | - Peter E Lipsky
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA
| | - Amrie C Grammer
- RILITE Research Institute and AMPEL BioSolutions, 250 W Main St, Ste 300, Charlottesville, VA, 22902, USA.
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Nakazawa D, Marschner JA, Platen L, Anders HJ. Extracellular traps in kidney disease. Kidney Int 2019; 94:1087-1098. [PMID: 30466565 DOI: 10.1016/j.kint.2018.08.035] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/01/2018] [Accepted: 08/30/2018] [Indexed: 12/12/2022]
Abstract
During the past decade the formation of neutrophil extracellular traps (NETs) has been recognized as a unique modality of pathogen fixation (sticky extracellular chromatin) and pathogen killing (cytotoxic histones and proteases) during host defense, as well as collateral tissue damage. Numerous other triggers induce NET formation in multiple forms of sterile inflammation, including thrombosis, gout, obstruction of draining ducts, and trauma. Whether neutrophils always die along with NET release, and if they do die, how, remains under study and is most likely context dependent. In certain settings, neutrophils release NETs while undergoing regulated necrosis-for example, necroptosis. NETs and extracellular traps (ETs) released by macrophages also have been well documented in kidney diseases-for example, in various forms of acute kidney injury. Histones released from ETs and other sources are cytotoxic and elicit inflammation, contributing to necroinflammation of the early-injury phase of acute tubular necrosis in antineutrophil cytoplasmic antibody-related renal vasculitis, anti-glomerular basement membrane disease, lupus nephritis, and thrombotic microangiopathies. Finally, acute kidney injury-related releases of dying renal cells or ETs promote remote organ injuries-for example, acute respiratory distress syndrome. In this review, we summarize what is known about the release of ETs from neutrophils and macrophages in the kidney, the available experimental evidence, and ongoing discussions in the field.
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Affiliation(s)
- Daigo Nakazawa
- Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Julian A Marschner
- Division of Nephrology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Germany
| | - Louise Platen
- Division of Nephrology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Germany
| | - Hans-Joachim Anders
- Division of Nephrology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Germany.
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40
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Hesselink L, Spijkerman R, van Wessem KJP, Koenderman L, Leenen LPH, Huber-Lang M, Hietbrink F. Neutrophil heterogeneity and its role in infectious complications after severe trauma. World J Emerg Surg 2019; 14:24. [PMID: 31164913 PMCID: PMC6542247 DOI: 10.1186/s13017-019-0244-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023] Open
Abstract
Background Trauma leads to a complex inflammatory cascade that induces both immune activation and a refractory immune state in parallel. Although both components are deemed necessary for recovery, the balance is tight and easily lost. Losing the balance can lead to life-threatening infectious complications as well as long-term immunosuppression with recurrent infections. Neutrophils are known to play a key role in these processes. Therefore, this review focuses on neutrophil characteristics and function after trauma and how these features can be used to identify trauma patients at risk for infectious complications. Results Distinct neutrophil subtypes exist that play their own role in the recovery and/or development of infectious complications after trauma. Furthermore, the refractory immune state is related to the risk of infectious complications. These findings change the initial concepts of the immune response after trauma and give rise to new biomarkers for monitoring and predicting inflammatory complications in severely injured patients. Conclusion For early recognition of patients at risk, the immune system should be monitored. Several neutrophil biomarkers show promising results and analysis of these markers has become accessible to such extent that they can be used for point-of-care decision making after trauma.
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Affiliation(s)
- Lillian Hesselink
- Department of Trauma Surgery, University Medical Centre Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology and Department of Respiratory Medicine, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Roy Spijkerman
- Department of Trauma Surgery, University Medical Centre Utrecht, Utrecht, The Netherlands
- Laboratory of Translational Immunology and Department of Respiratory Medicine, University Medical Centre Utrecht, Utrecht, The Netherlands
| | | | - Leo Koenderman
- Laboratory of Translational Immunology and Department of Respiratory Medicine, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Luke P. H. Leenen
- Department of Trauma Surgery, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma Immunology, University Hospital of Ulm, Ulm, Germany
| | - Falco Hietbrink
- Department of Trauma Surgery, University Medical Centre Utrecht, Utrecht, The Netherlands
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41
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Kegerreis BJ, Catalina MD, Geraci NS, Bachali P, Lipsky PE, Grammer AC. Genomic Identification of Low-Density Granulocytes and Analysis of Their Role in the Pathogenesis of Systemic Lupus Erythematosus. THE JOURNAL OF IMMUNOLOGY 2019; 202:3309-3317. [PMID: 31019061 DOI: 10.4049/jimmunol.1801512] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/20/2019] [Indexed: 12/30/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by the presence of low-density granulocytes (LDGs) with a heightened capacity for spontaneous NETosis, but the contribution of LDGs to SLE pathogenesis remains unclear. To characterize LDGs in human SLE, gene expression profiles derived from isolated LDGs were characterized by weighted gene coexpression network analysis, and a 92-gene module was identified. The LDG gene signature was enriched in genes related to neutrophil degranulation and cell cycle regulation. This signature was assessed in gene expression datasets from two large-scale SLE clinical trials to study associations between LDG enrichment, SLE manifestations, and treatment regimens. LDG enrichment in the blood was associated with corticosteroid treatment as well as anti-dsDNA, low serum complement, renal manifestations, and vasculitis, but the latter two of these associations were dependent on concomitant corticosteroid treatment. In addition, LDG enrichment was associated with enrichment of gene signatures induced by type I IFN and TNF irrespective of corticosteroid treatment. Notably, LDG enrichment was not found in numerous tissues affected by SLE. Comparison with relevant reference datasets indicated that LDG enrichment is likely reflective of increased granulopoiesis in the bone marrow and not peripheral neutrophil activation. The results have uncovered important determinants of the appearance of LDGs in SLE and have emphasized the likely role of LDGs in specific aspects of lupus pathogenesis.
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Affiliation(s)
- Brian J Kegerreis
- RILITE Research Institute, Charlottesville, VA 22902; and AMPEL BioSolutions, Charlottesville, VA 22902
| | - Michelle D Catalina
- RILITE Research Institute, Charlottesville, VA 22902; and AMPEL BioSolutions, Charlottesville, VA 22902
| | - Nicholas S Geraci
- RILITE Research Institute, Charlottesville, VA 22902; and AMPEL BioSolutions, Charlottesville, VA 22902
| | - Prathyusha Bachali
- RILITE Research Institute, Charlottesville, VA 22902; and AMPEL BioSolutions, Charlottesville, VA 22902
| | - Peter E Lipsky
- RILITE Research Institute, Charlottesville, VA 22902; and AMPEL BioSolutions, Charlottesville, VA 22902
| | - Amrie C Grammer
- RILITE Research Institute, Charlottesville, VA 22902; and AMPEL BioSolutions, Charlottesville, VA 22902
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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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43
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Remot A, Doz E, Winter N. Neutrophils and Close Relatives in the Hypoxic Environment of the Tuberculous Granuloma: New Avenues for Host-Directed Therapies? Front Immunol 2019; 10:417. [PMID: 30915076 PMCID: PMC6423059 DOI: 10.3389/fimmu.2019.00417] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/18/2019] [Indexed: 12/14/2022] Open
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb) is one of the most prevalent lung infections of humans and kills ~1.7 million people each year. TB pathophysiology is complex with a central role played by granuloma where a delicate balance takes place to both constrain bacilli and prevent excessive inflammation that may destroy lung functions. Neutrophils reach the lung in waves following first encounter with bacilli and contribute both to early Mtb elimination and late deleterious inflammation. The hypoxic milieu where cells and bacilli cohabit inside the granuloma favors metabolism changes and the impact on TB infection needs to be more thoroughly understood. At the cellular level while the key role of the alveolar macrophage has long been established, behavior of neutrophils in the hypoxic granuloma remains poorly explored. This review will bring to the front new questions that are now emerging regarding neutrophils activity in TB. Are different neutrophil subsets involved in Mtb infection and how? How do neutrophils and close relatives contribute to shaping the granuloma immune environment? What is the role of hypoxia and hypoxia induced factors inside granuloma on neutrophil fate and functions and TB pathophysiology? Addressing these questions is key to the development of innovative host-directed therapies to fight TB.
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Affiliation(s)
- Aude Remot
- INRA, Universite de Tours, UMR Infectiologie et Sante Publique, Nouzilly, France
| | - Emilie Doz
- INRA, Universite de Tours, UMR Infectiologie et Sante Publique, Nouzilly, France
| | - Nathalie Winter
- INRA, Universite de Tours, UMR Infectiologie et Sante Publique, Nouzilly, France
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44
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Different Faces for Different Places: Heterogeneity of Neutrophil Phenotype and Function. J Immunol Res 2019; 2019:8016254. [PMID: 30944838 PMCID: PMC6421822 DOI: 10.1155/2019/8016254] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/22/2018] [Accepted: 01/03/2019] [Indexed: 02/05/2023] Open
Abstract
As the most abundant leukocytes in the circulation, neutrophils are committed to innate and adaptive immune effector function to protect the human body. They are capable of killing intruding microbes through various ways including phagocytosis, release of granules, and formation of extracellular traps. Recent research has revealed that neutrophils are heterogeneous in phenotype and function and can display outstanding plasticity in both homeostatic and disease states. The great flexibility and elasticity arm neutrophils with important regulatory and controlling functions in various disease states such as autoimmunity and inflammation as well as cancer. Hence, this review will focus on recent literature describing neutrophils' variable and diverse phenotypes and functions in different contexts.
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45
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Li Y, Li H, Wang H, Pan H, Zhao H, Jin H, Jie S. The proportion, origin and pro-inflammation roles of low density neutrophils in SFTS disease. BMC Infect Dis 2019; 19:109. [PMID: 30717709 PMCID: PMC6360754 DOI: 10.1186/s12879-019-3701-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 01/09/2019] [Indexed: 01/24/2023] Open
Abstract
Background Severe fever with thrombocytopenia syndrome (SFTS) is a novel emerging viral infectious disease. We explored the percentage, origins and functional roles of low density neutrophils (LDNs), one of the neutrophils subsets, in SFTS. Methods The LDNs and normal density neutrophils (NDNs) from blood of SFTS and normal volunteers which were collected separately. The percentage, origins and the phagocytic capability of SFTS viral (SFTSV) of LDNs were investigated by flow cytometry and real time PCR. The capacity of LDNs to secrete cytokines and to damage endothelial cells was assessed by ELISA and flow cytometry. Results We observed that the proportion of LDNs increased dramatically compared with the healthy donors and became the dominant circulating neutrophil population in SFTS patients. Interestingly, the NDNs from the normal donors could switch to LDNs under the SFTS environment. Moreover, SFTSV load in LDNs was significantly higher than that of NDNs in the severe SFTS patients. In addition, the LDNs secreted much higher levels of pro-inflammatory cytokines than NDNs in SFTS and could induce endothelial cell injury. Conclusion The NDNs can be converted to LDNs. This conversion mechanism could become the source of LDNs. The LDNs in severe SFTS patient could engulf more SFTSV and exhibit pro-inflammation functions. Trial registration The Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology (IORG No: IORG0003571) gave a final APPROVAL for the study.
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Affiliation(s)
- Yajiao Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Huiyu Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hua Wang
- Department of Infectious Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hong Pan
- Kingstar Global, Wuhan, 430022, China
| | - Huixia Zhao
- Department of Infectious Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Honglin Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Shenghua Jie
- Department of Infectious Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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46
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Kroon EE, Coussens AK, Kinnear C, Orlova M, Möller M, Seeger A, Wilkinson RJ, Hoal EG, Schurr E. Neutrophils: Innate Effectors of TB Resistance? Front Immunol 2018; 9:2637. [PMID: 30487797 PMCID: PMC6246713 DOI: 10.3389/fimmu.2018.02637] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/26/2018] [Indexed: 12/19/2022] Open
Abstract
Certain individuals are able to resist Mycobacterium tuberculosis infection despite persistent and intense exposure. These persons do not exhibit adaptive immune priming as measured by tuberculin skin test (TST) and interferon-γ (IFN-γ) release assay (IGRA) responses, nor do they develop active tuberculosis (TB). Genetic investigation of individuals who are able to resist M. tuberculosis infection shows there are likely a combination of genetic variants that contribute to the phenotype. The contribution of the innate immune system and the exact cells involved in this phenotype remain incompletely elucidated. Neutrophils are prominent candidates for possible involvement as primers for microbial clearance. Significant variability is observed in neutrophil gene expression and DNA methylation. Furthermore, inter-individual variability is seen between the mycobactericidal capacities of donor neutrophils. Clearance of M. tuberculosis infection is favored by the mycobactericidal activity of neutrophils, apoptosis, effective clearance of cells by macrophages, and resolution of inflammation. In this review we will discuss the different mechanisms neutrophils utilize to clear M. tuberculosis infection. We discuss the duality between neutrophils' ability to clear infection and how increasing numbers of neutrophils contribute to active TB severity and mortality. Further investigation into the potential role of neutrophils in innate immune-mediated M. tuberculosis infection resistance is warranted since it may reveal clinically important activities for prevention as well as vaccine and treatment development.
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Affiliation(s)
- Elouise E Kroon
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Anna K Coussens
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.,Infection and Immunity Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Division of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Craig Kinnear
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Marianna Orlova
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,McGill International TB Centre, McGill University, Montreal, QC, Canada.,Departments of Medicine and Human Genetics, McGill University, Montreal, QC, Canada
| | - Marlo Möller
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Allison Seeger
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Robert J Wilkinson
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.,Department of Medicine, Imperial College London, London, United Kingdom.,The Francis Crick Institute, London, United Kingdom
| | - Eileen G Hoal
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Erwin Schurr
- Program in Infectious Diseases and Immunity in Global Health, The Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,McGill International TB Centre, McGill University, Montreal, QC, Canada.,Departments of Medicine and Human Genetics, McGill University, Montreal, QC, Canada
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47
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Mortaz E, Alipoor SD, Adcock IM, Mumby S, Koenderman L. Update on Neutrophil Function in Severe Inflammation. Front Immunol 2018; 9:2171. [PMID: 30356867 PMCID: PMC6190891 DOI: 10.3389/fimmu.2018.02171] [Citation(s) in RCA: 236] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 09/03/2018] [Indexed: 12/17/2022] Open
Abstract
Neutrophils are main players in the effector phase of the host defense against micro-organisms and have a major role in the innate immune response. Neutrophils show phenotypic heterogeneity and functional flexibility, which highlight their importance in regulation of immune function. However, neutrophils can play a dual role and besides their antimicrobial function, deregulation of neutrophils and their hyperactivity can lead to tissue damage in severe inflammation or trauma. Neutrophils also have an important role in the modulation of the immune system in response to severe injury and trauma. In this review we will provide an overview of the current understanding of neutrophil subpopulations and their function during and post-infection and discuss the possible mechanisms of immune modulation by neutrophils in severe inflammation.
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Affiliation(s)
- Esmaeil Mortaz
- Department of Immunology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Clinical Tuberculosis and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shamila D Alipoor
- Molecular Medicine Department, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Ian M Adcock
- Priority Research Centre for Asthma and Respiratory Disease, Hunter Medical Research Institute, University of Newcastle, Newcastle, NSW, Australia.,Airways Disease Section, Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Sharon Mumby
- Airways Disease Section, Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Leo Koenderman
- Laboratory of Translational Immunology, Department of Respiratory Medicine, University Medical Centre Utrecht, Utrecht, Netherlands
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48
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Label-free leukocyte sorting and impedance-based profiling for diabetes testing. Biosens Bioelectron 2018; 118:195-203. [PMID: 30077872 DOI: 10.1016/j.bios.2018.07.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/18/2018] [Accepted: 07/25/2018] [Indexed: 12/11/2022]
Abstract
Circulating leukocytes comprise of approximately 1% of all blood cells and efficient enrichment of these cells from whole blood is critical for understanding cellular heterogeneity and biological significance in health and diseases. In this work, we report a novel microfluidic strategy for rapid (< 1 h) label-free leukocyte sorting and impedance-based profiling to determine cell activation in type 2 diabetes mellitus (T2DM) using whole blood. Leukocytes were first size-fractionated into different subtypes (neutrophils, monocytes, lymphocytes) using an inertial spiral sorter prior to single-cell impedance measurement in a microfluidic device with coplanar electrode design. Significant changes in membrane dielectric properties (size and opacity) were detected between healthy and activated leukocytes (TNF-α/LPS stimulated), during monocyte differentiation and among different monocyte subsets (classical, intermediate, non-classical). As proof-of-concept for diabetes testing, neutrophil/monocyte dielectric properties in T2DM subjects (n = 8) were quantified which were associated with cardiovascular risk factors including lipid levels, C-reactive protein (CRP) and vascular functions (LnRHI) (P < 0.05) were observed. Overall, these results clearly showed that T2DM subjects have pro-inflammatory leukocyte phenotypes and suggest leukocyte impedance signature as a novel surrogate biomarker for inflammation.
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49
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Leisching GR. Susceptibility to Tuberculosis Is Associated With PI3K-Dependent Increased Mobilization of Neutrophils. Front Immunol 2018; 9:1669. [PMID: 30065729 PMCID: PMC6056613 DOI: 10.3389/fimmu.2018.01669] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/04/2018] [Indexed: 12/19/2022] Open
Abstract
Neutrophilia is a condition commonly observed in patients with late-stage tuberculosis, but evidence suggests that increased neutrophil influx begins early after infection in susceptible hosts and functions to promote a nutrient-replete niche that promotes Mycobacterium tuberculosis survival and persistence. As the disease progresses, an increase in the number of neutrophil-like cells is observed, all of which exhibit characteristics associated with (i) phenotypic and biochemical features of immaturity, (ii) the inability to activate T-cells, (iii) hyper-inflammation, and (iv) prolonged survival. Transcriptomics reveal a common set of molecules associated with the PI3–Kinase pathway that are dysregulated in patients with active tuberculosis. Closer inspection of their individual biological roles reveal their ability to modulate the IL-17/G–CSF axis, induce leukocyte receptor activation, and regulate apoptosis and motility. This review draws attention to neutrophil hyper-reactivity as a driving force for both the establishment and progression of tuberculosis disease in susceptible individuals.
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Affiliation(s)
- Gina R Leisching
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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50
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Wong SL, Wagner DD. Peptidylarginine deiminase 4: a nuclear button triggering neutrophil extracellular traps in inflammatory diseases and aging. FASEB J 2018; 32:fj201800691R. [PMID: 29924943 PMCID: PMC6219837 DOI: 10.1096/fj.201800691r] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/04/2018] [Indexed: 12/17/2022]
Abstract
Peptidylarginine deiminase 4 (PAD4) is a nuclear citrullinating enzyme that is critically involved in the release of decondensed chromatin from neutrophils as neutrophil extracellular traps (NETs). NETs, together with fibrin, are implicated in host defense against pathogens; however, the formation of NETs (NETosis) has injurious effects that may outweigh their protective role. For example, PAD4 activity produces citrullinated neoantigens that promote autoimmune diseases, such as rheumatoid arthritis, to which PAD4 is genetically linked and where NETosis is prominent. NETs are also generated in basic sterile inflammatory responses that are induced by many inflammatory stimuli, including cytokines, hypoxia, and activated platelets. Mice that lack PAD4-deficient in NETosis-serve as an excellent tool with which to study the importance of NETs in disease models. In recent years, animal and human studies have demonstrated that NETs contribute to the etiology and propagation of many common noninfectious diseases, the focus of our review. We will discuss the role of NETs in thrombotic and cardiovascular disease, the induction of NETs by cancers and its implications for cancer progression and cancer-associated thrombosis, and elevated NETosis in diabetes and its negative impact on wound healing, and will propose a link between PAD4/NETs and age-related organ fibrosis. We identify unresolved issues and new research directions.-Wong, S. L., Wagner, D. D. Peptidylarginine deiminase 4: a nuclear button triggering neutrophil extracellular traps in inflammatory diseases and aging.
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Affiliation(s)
- Siu Ling Wong
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Denisa D. Wagner
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
- Division of Hematology/Oncology, Boston Children’s Hospital, Boston, Massachusetts, USA
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