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Zheng L, Rang M, Fuchs C, Keß A, Wunsch M, Hentschel J, Hsiao CC, Kleber C, Osterhoff G, Aust G. The Posttraumatic Increase of the Adhesion GPCR EMR2/ ADGRE2 on Circulating Neutrophils Is Not Related to Injury Severity. Cells 2023; 12:2657. [PMID: 37998392 PMCID: PMC10670733 DOI: 10.3390/cells12222657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/05/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023] Open
Abstract
Trauma triggers a rapid innate immune response to aid the clearance of damaged/necrotic cells and their released damage-associated molecular pattern (DAMP). Here, we monitored the expression of EMR2/ADGRE2, involved in the functional regulation of innate immune cells, on circulating neutrophils in very severely and moderately/severely injured patients up to 240 h after trauma. Notably, neutrophilic EMR2 showed a uniform, injury severity- and type of injury-independent posttraumatic course in all patients. The percentage of EMR2+ neutrophils and their EMR2 level increased and peaked 48 h after trauma. Afterwards, they declined and normalized in some, but not all, patients. Circulating EMR2+ compared to EMR2- neutrophils express less CD62L and more CD11c, a sign of activation. Neutrophilic EMR2 regulation was verified in vitro. Remarkably, it increased, depending on extracellular calcium, in controls as well. Cytokines, enhanced in patients immediately after trauma, and sera of patients did not further affect this neutrophilic EMR2 increase, whereas apoptosis induction disrupted it. Likely the damaged/necrotic cells/DAMPs, unavoidable during neutrophil culture, stimulate the neutrophilic EMR2 increase. In summary, the rapidly increased absolute number of neutrophils, especially present in very severely injured patients, together with upregulated neutrophilic EMR2, may expand our in vivo capacity to react to and finally clear damaged/necrotic cells/DAMPs after trauma.
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Affiliation(s)
- Leyu Zheng
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Moujie Rang
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Carolin Fuchs
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Annette Keß
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Mandy Wunsch
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Julia Hentschel
- Institute of Human Genetics, Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Cheng-Chih Hsiao
- Department of Experimental Immunology, Amsterdam Institute for Infection and Immunity, Amsterdam University Medical Centers, 1105 AZ Amsterdam, The Netherlands;
| | - Christian Kleber
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Georg Osterhoff
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
| | - Gabriela Aust
- Research Laboratories and Department of Orthopaedics, Trauma and Plastic Surgery (OUP), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany; (L.Z.); (M.R.); (C.F.); (A.K.); (M.W.); (C.K.); (G.O.)
- Research Laboratories and Department of Visceral, Transplantation, Vascular and Thoracic Surgery (VTTG), Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany
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Hook AL, Hogwood J, Gray E, Mulloy B, Merry CLR. High sensitivity analysis of nanogram quantities of glycosaminoglycans using ToF-SIMS. Commun Chem 2021; 4:67. [PMID: 36697531 PMCID: PMC9814553 DOI: 10.1038/s42004-021-00506-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/07/2021] [Indexed: 01/28/2023] Open
Abstract
Glycosaminoglycans (GAGs) are important biopolymers that differ in the sequence of saccharide units and in post polymerisation alterations at various positions, making these complex molecules challenging to analyse. Here we describe an approach that enables small quantities (<200 ng) of over 400 different GAGs to be analysed within a short time frame (3-4 h). Time of flight secondary ion mass spectrometry (ToF-SIMS) together with multivariate analysis is used to analyse the entire set of GAG samples. Resultant spectra are derived from the whole molecules and do not require pre-digestion. All 6 possible GAG types are successfully discriminated, both alone and in the presence of fibronectin. We also distinguish between pharmaceutical grade heparin, derived from different animal species and from different suppliers, to a sensitivity as low as 0.001 wt%. This approach is likely to be highly beneficial in the quality control of GAGs produced for therapeutic applications and for characterising GAGs within biomaterials or from in vitro cell culture.
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Affiliation(s)
- Andrew L. Hook
- grid.4563.40000 0004 1936 8868Advanced Materials and Healthcare Technology, University of Nottingham, Nottingham, UK
| | - John Hogwood
- grid.70909.370000 0001 2199 6511National Institute for Biological Standards and Control, Potters Bar, UK
| | - Elaine Gray
- grid.70909.370000 0001 2199 6511National Institute for Biological Standards and Control, Potters Bar, UK ,grid.13097.3c0000 0001 2322 6764Institute for Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, Stamford Street, London, UK
| | - Barbara Mulloy
- grid.13097.3c0000 0001 2322 6764Institute for Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, Stamford Street, London, UK
| | - Catherine L. R. Merry
- grid.4563.40000 0004 1936 8868Stem Cell Glycobiology Group, Biodiscovery Institute, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, UK
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Waddell LA, Lefevre L, Bush SJ, Raper A, Young R, Lisowski ZM, McCulloch MEB, Muriuki C, Sauter KA, Clark EL, Irvine KM, Pridans C, Hope JC, Hume DA. ADGRE1 (EMR1, F4/80) Is a Rapidly-Evolving Gene Expressed in Mammalian Monocyte-Macrophages. Front Immunol 2018; 9:2246. [PMID: 30327653 PMCID: PMC6174849 DOI: 10.3389/fimmu.2018.02246] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/10/2018] [Indexed: 12/26/2022] Open
Abstract
The F4/80 antigen, encoded by the Adgre1 locus, has been widely-used as a monocyte-macrophage marker in mice, but its value as a macrophage marker in other species is unclear, and has even been questioned. ADGRE1 is a seven transmembrane G protein-coupled receptor with an extracellular domain containing repeated Epidermal Growth Factor (EGF)-like calcium binding domains. Using a new monoclonal antibody, we demonstrated that ADGRE1 is a myeloid differentiation marker in pigs, absent from progenitors in bone marrow, highly-expressed in mature granulocytes, monocytes, and tissue macrophages and induced by macrophage colony-stimulating factor (CSF1) treatment in vivo. Based upon these observations, we utilized RNA-Seq to assess the expression of ADGRE1 mRNA in bone marrow or monocyte-derived macrophages (MDM) and alveolar macrophages from 8 mammalian species including pig, human, rat, sheep, goat, cow, water buffalo, and horse. ADGRE1 mRNA was expressed by macrophages in each species, with inter-species variation both in expression level and response to lipopolysaccharide (LPS) stimulation. Analysis of the RNA-Seq data also revealed additional exons in several species compared to current Ensembl annotations. The ruminant species and horses appear to encode a complete duplication of the 7 EGF-like domains. In every species, Sashimi plots revealed evidence of exon skipping of the EGF-like domains, which are highly-variable between species and polymorphic in humans. Consistent with these expression patterns, key elements of the promoter and a putative enhancer are also conserved across all species. The rapid evolution of this molecule and related ADGRE family members suggests immune selection and a role in pathogen recognition.
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Affiliation(s)
- Lindsey A. Waddell
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Lucas Lefevre
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Stephen J. Bush
- Nuffield Department of Clinical Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Anna Raper
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Rachel Young
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Zofia M. Lisowski
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | | | - Charity Muriuki
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Kristin A. Sauter
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Emily L. Clark
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | | | - Clare Pridans
- Centre for Inflammation Research at the University of Edinburgh, Edinburgh, United Kingdom
| | - Jayne C. Hope
- The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - David A. Hume
- Mater Research-University of Queensland, Woolloongabba, QLD, Australia
- Centre for Inflammation Research at the University of Edinburgh, Edinburgh, United Kingdom
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