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Viola H, Chen LH, Jo S, Washington K, Selva C, Li A, Feng D, Giacalone V, Stephenson ST, Cottrill K, Mohammed A, Williams E, Qu X, Lam W, Ng NL, Fitzpatrick A, Grunwell J, Tirouvanziam R, Takayama S. HIGH THROUGHPUT QUANTITATION OF HUMAN NEUTROPHIL RECRUITMENT AND FUNCTIONAL RESPONSES IN AN AIR-BLOOD BARRIER ARRAY. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.10.593624. [PMID: 38798413 PMCID: PMC11118313 DOI: 10.1101/2024.05.10.593624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Dysregulated neutrophil recruitment drives many pulmonary diseases, but most preclinical screening methods are unsuited to evaluate pulmonary neutrophilia, limiting progress towards therapeutics. Namely, high throughput therapeutic screening systems typically exclude critical neutrophilic pathophysiology, including blood-to-lung recruitment, dysfunctional activation, and resulting impacts on the air-blood barrier. To meet the conflicting demands of physiological complexity and high throughput, we developed an assay of 96-well Leukocyte recruitment in an Air-Blood Barrier Array (L-ABBA-96) that enables in vivo -like neutrophil recruitment compatible with downstream phenotyping by automated flow cytometry. We modeled acute respiratory distress syndrome (ARDS) with neutrophil recruitment to 20 ng/mL epithelial-side interleukin 8 (IL-8) and found a dose dependent reduction in recruitment with physiologic doses of baricitinib, a JAK1/2 inhibitor recently FDA-approved for severe COVID-19 ARDS. Additionally, neutrophil recruitment to patient-derived cystic fibrosis sputum supernatant induced disease-mimetic recruitment and activation of healthy donor neutrophils and upregulated endothelial e-selectin. Compared to 24-well assays, the L-ABBA-96 reduces required patient sample volumes by 25 times per well and quadruples throughput per plate. Compared to microfluidic assays, the L-ABBA-96 recruits two orders of magnitude more neutrophils per well, enabling downstream flow cytometry and other standard biochemical assays. This novel pairing of high-throughput in vitro modeling of organ-level lung function with parallel high-throughput leukocyte phenotyping substantially advances opportunities for pathophysiological studies, personalized medicine, and drug testing applications.
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Witko-Sarsat V, Burgel PR. Cystic fibrosis in the era of CFTR modulators: did the neutrophil slip through the cracks? J Leukoc Biol 2024; 115:417-419. [PMID: 38193848 DOI: 10.1093/jleuko/qiad164] [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: 11/12/2023] [Revised: 12/13/2023] [Accepted: 12/21/2023] [Indexed: 01/10/2024] Open
Abstract
Neutrophil abnormalities are present in patients with cystic fibrosis treated with CFTR modulators.
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Affiliation(s)
- Véronique Witko-Sarsat
- Institut National de la Santé et de la Recherche Médicale U1016, Institut Cochin, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Department of Immunology, 27 rue du Faubourg Saint Jacques, Paris, France
- Université Paris-Cité, 15 Rue de l'École de Médecine, 75006 Paris, France
| | - Pierre-Régis Burgel
- Institut National de la Santé et de la Recherche Médicale U1016, Institut Cochin, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Department of Immunology, 27 rue du Faubourg Saint Jacques, Paris, France
- Université Paris-Cité, 15 Rue de l'École de Médecine, 75006 Paris, France
- Respiratory Medicine and Cystic Fibrosis National Reference Center, Cochin Hospital, Assistance Publique Hôpitaux de Paris, 27 rue du Faubourg Saint Jacques, 75014 Paris, France
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3
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Aymonnier K, Bosetta E, Leborgne NGF, Ullmer A, Le Gall M, De Chiara A, Salnot V, Many S, Scapini P, Wicks I, Chatfield S, Martin KR, Witko-Sarsat V. G-CSF reshapes the cytosolic PCNA scaffold and modulates glycolysis in neutrophils. J Leukoc Biol 2024; 115:205-221. [PMID: 37824822 DOI: 10.1093/jleuko/qiad122] [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: 04/27/2023] [Revised: 08/22/2023] [Accepted: 09/18/2023] [Indexed: 10/14/2023] Open
Abstract
Cytosolic proliferating cell nuclear antigen (PCNA) is involved in neutrophil survival and function, in which it acts as a scaffold and associates with proteins involved in apoptosis, NADPH oxidase activation, cytoskeletal dynamics, and metabolism. While the PCNA interactome has been characterized in neutrophils under homeostatic conditions, less is known about neutrophil PCNA in pathophysiological contexts. Granulocyte colony-stimulating factor (G-CSF) is a cytokine produced in response to inflammatory stimuli that regulates many aspects of neutrophil biology. Here, we used isolated normal-density neutrophils from G-CSF-treated haemopoietic stem cell donors (GDs) as a model to understand the role of PCNA during inflammation. Proteomic analysis of the neutrophil cytosol revealed significant differences between GDs and healthy donors (HDs). PCNA was one of the most upregulated proteins in GDs, and the PCNA interactome was significantly different in GDs compared with HDs. Importantly, while PCNA associated with almost all enzymes involved in glycolysis in HDs, these associations were decreased in GDs. Functionally, neutrophils from GDs had a significant increase in glycolysis compared with HDs. Using p21 competitor peptides, we showed that PCNA negatively regulates neutrophil glycolysis in HDs but had no effect on GD neutrophils. These data demonstrate that G-CSF alters the PCNA scaffold, affecting interactions with key glycolytic enzymes, and thus regulates glycolysis, the main energy pathway utilized by neutrophils. By this selective control of glycolysis, PCNA can organize neutrophils functionality in parallel with other PCNA mechanisms of prolonged survival. PCNA may therefore be instrumental in the reprogramming that neutrophils undergo in inflammatory or tumoral settings.
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Affiliation(s)
- Karen Aymonnier
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
| | - Enzo Bosetta
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
| | - Nathan G F Leborgne
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
| | - Audrey Ullmer
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
| | - Morgane Le Gall
- Proteom'IC facility, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du Faubourg Saint Jacques, Paris F-75014, France
| | - Alessia De Chiara
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
| | - Virginie Salnot
- Proteom'IC facility, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du Faubourg Saint Jacques, Paris F-75014, France
| | - Souganya Many
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
| | - Patrizia Scapini
- Department of General Pathology, University of Verona, Verona 37134, Italy
| | - Ian Wicks
- Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Grattan Street, Parkville, Victoria 3010, Australia
- Department of Rheumatology, Royal Melbourne Hospital, Grattan Street, Parkville, Victoria 3050, Australia
| | - Simon Chatfield
- Department of Rheumatology, Royal Melbourne Hospital, Grattan Street, Parkville, Victoria 3050, Australia
| | - Katherine R Martin
- Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Grattan Street, Parkville, Victoria 3010, Australia
| | - Véronique Witko-Sarsat
- Department of Immunology, Institut Cochin, Institut National de la Santé et de la Recherche Médicale U1016, Centre National de la Recherche Scientifique Unité Mixte de Recherche 8104, Université Paris Cité, 27 rue du faubourg Saint Jacques, Paris F-75014, France
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Murru A, Vadeboncoeur N, Therrien AA, Coderre L, Vaillancourt M, Labrecque MM, Berthiaume Y, Bouvet G, Adam D, Brochiero E, Lesage S, Flamand N, Bilodeau L, Fernandes MJ. Association of low-density neutrophils with lung function and disease progression in adult cystic fibrosis. J Cyst Fibros 2023; 22:1080-1084. [PMID: 36973151 DOI: 10.1016/j.jcf.2023.03.009] [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: 10/21/2022] [Revised: 03/02/2023] [Accepted: 03/10/2023] [Indexed: 03/28/2023]
Abstract
BACKGROUND Cystic fibrosis (CF) neutrophils fail to eradicate infection despite their massive recruitment into the lung. While studies mostly focus on pathogen clearance by normal density neutrophils in CF, the contribution of low-density neutrophil (LDNs) subpopulations to disease pathogenesis remains unclear. METHODS LDNs were isolated from whole blood donations of clinically stable adult CF patients and from healthy donors. LDN proportion and immunophenotype was assessed by flow cytometry. Associations of LDNs with clinical parameters were determined. RESULTS LDN proportion was increased in CF patients' circulation compared with healthy donors. LDNs are a heterogeneous population of both mature and immature cells in CF and in healthy individuals. Moreover, a higher proportion of mature LDN correlates with a gradual decline in lung function and repeated pulmonary exacerbations in CF patients. CONCLUSIONS Collectively, our observations suggest that low-density neutrophils are linked to CF pathogenesis and underscore the potential clinical relevance of neutrophil subpopulations in CF.
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Affiliation(s)
- Andréa Murru
- Infectious and Immune Diseases Division, CHU de Québec Research Center, Laval University, Québec, QC, Canada; Department of Microbiology-Infectious Diseases and Immunology, Faculty of Medicine, Laval University, Québec, QC, Canada; Quebec Heart and Lung Institute, Québec, QC, Canada
| | | | | | - Lise Coderre
- Maisonneuve-Rosemont Hospital Research Center, Montréal, QC, Canada
| | - Myriam Vaillancourt
- Infectious and Immune Diseases Division, CHU de Québec Research Center, Laval University, Québec, QC, Canada; Department of Microbiology-Infectious Diseases and Immunology, Faculty of Medicine, Laval University, Québec, QC, Canada
| | - Marie-Michèle Labrecque
- Infectious and Immune Diseases Division, CHU de Québec Research Center, Laval University, Québec, QC, Canada; Department of Microbiology-Infectious Diseases and Immunology, Faculty of Medicine, Laval University, Québec, QC, Canada
| | | | | | - Damien Adam
- The University of Montreal Hospital Research Centre (CRCHUM), Montréal, QC, Canada; Department of Medicine, Faculty of Medicine, University of Montréal, Montréal, QC, Canada
| | - Emmanuelle Brochiero
- The University of Montreal Hospital Research Centre (CRCHUM), Montréal, QC, Canada; Department of Medicine, Faculty of Medicine, University of Montréal, Montréal, QC, Canada
| | - Sylvie Lesage
- Maisonneuve-Rosemont Hospital Research Center, Montréal, QC, Canada; Department of Microbiology, Infectiology and Immunology, University of Montréal, Montréal, QC, Canada
| | | | | | - Maria J Fernandes
- Infectious and Immune Diseases Division, CHU de Québec Research Center, Laval University, Québec, QC, Canada; Department of Microbiology-Infectious Diseases and Immunology, Faculty of Medicine, Laval University, Québec, QC, Canada.
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Şişmanlar Eyuboglu T, Aslan AT, Asfuroglu P, Kunt N, Ersoy A, Kose M, Unal G, Pekcan S. Neutrophil lymphocyte ratio, mean platelet volume, and immunoreactive trypsinogen as early inflammatory biomarkers for cystic fibrosis in infancy: A retrospective cohort study. Pediatr Pulmonol 2023; 58:3106-3112. [PMID: 37530491 DOI: 10.1002/ppul.26628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/27/2023] [Accepted: 07/24/2023] [Indexed: 08/03/2023]
Abstract
BACKGROUND Airway inflammation starts in early life in cystic fibrosis (CF) and limited, objective markers are available to help identify infants with increased inflammation. We aimed to investigate neutrophil, lymphocyte ratio (NLR), mean platelet volume (MPV) and immunoreactive trypsinogen (IRT) to be a possible inflammatory biomarker for CF in infancy. METHODS This was a retrospective cohort study in three centers. Between January 2015 and December 2022, children with CF newborn screening (NBS) positivity and diagnosed as CF were included in the study. Correlation analysis were performed with NLR, MPV, IRT and follow-up parameters such as z-scores, modified Shwachman-Kulczycki score (mSKS) at the first, second, third and sixth ages and pulmonary function test (PFT) at the sixth age. RESULTS A total of 92 children with CF included in the study and 47.8% of them were female. There were no correlations between NLR, MPV and weight and height z-scores for all ages (p > 0.05), a negative correlation was found between MPV and body mass indexes (BMI) z-score at the age of 6 (r = -0.443, p = 0.038). No correlation was found between NLR, MPV and PFT parameters and mSKS at all ages (p > 0.05). There was a negative correlation between first IRT and BMI z-score at 6 years of age (r = -0.381, p = 0.046) and negative correlations between second IRT and weight and BMI z-score at the age of 6 (r = -0.462, p = 0.010; r = -0.437, p = 0.016, respectively). CONCLUSION Higher MPV and IRT levels during NBS period are associated with worse nutritional outcome which may reflect chronic inflammation. Children with higher MPV and IRT should be followed up closely in terms of chronic inflammation and nutritional status.
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Affiliation(s)
| | - Ayse Tana Aslan
- Department of Pediatric Pulmonology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Pelin Asfuroglu
- Department of Pediatric Pulmonology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Nursima Kunt
- Department of Pediatrics, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Ali Ersoy
- Department of Pediatric Pulmonology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Mehmet Kose
- Department of Pediatric Pulmonology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Gokcen Unal
- Department of Pediatric Pulmonology, Necmettin Erbakan University Meram Medicine Faculty, Konya, Turkey
| | - Sevgi Pekcan
- Department of Pediatric Pulmonology, Necmettin Erbakan University Meram Medicine Faculty, Konya, Turkey
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Miller A, Fantone KM, Tucker SL, Gokanapudi N, Goldberg JB, Rada B. Short chain fatty acids reduce the respiratory burst of human neutrophils in response to cystic fibrosis isolates of Staphylococcus aureus. J Cyst Fibros 2023; 22:756-762. [PMID: 37211502 PMCID: PMC10524534 DOI: 10.1016/j.jcf.2023.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/23/2023]
Abstract
Short chain fatty acids (SCFA) are produced by anaerobic bacteria. The most common SCFAs are acetate, propionate and butyrate. SCFAs have been implicated in several inflammatory diseases including cystic fibrosis (CF) where they are present in the airways at millimolar concentrations. Staphylococcus aureus is one of the main respiratory pathogens in CF. Polymorphonuclear neutrophil granulocytes (PMN) represent the most important immune defense the host uses against S. aureus. However, the reason why PMNs are unable to clear S. aureus in CF remains largely unclear. We hypothesized that SCFAs impair effector functions of PMNs in response to S. aureus. To test this, human PMNs were exposed to CF clinical isolates of S. aureus in vitro in the presence or absence of SCFAs and effector functions of PMNs were assessed. Our data show that SCFAs do not affect the viability of PMNs and do not stimulate the release of neutrophil extracellular traps (NET) from human PMNs. Production of reactive oxygen species (ROS), another important antimicrobial function of PMNs, on the other hand, was significantly inhibited by SCFAs in response to the bacterium. SCFAs did not compromise the ability of PMNs to kill CF isolates of S. aureus in vitro. Overall, our results provide new knowledge into the interactions between SCFAs and the immune system, and indicate that SCFAs produced by anaerobic bacteria in the CF lung could interfere with reactive oxidant production of PMNs in response to S. aureus, one of the prominent respiratory pathogens in this disease.
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Affiliation(s)
- Arthur Miller
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA
| | - Kayla M Fantone
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA
| | - Samantha L Tucker
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA
| | - Naveen Gokanapudi
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA
| | - Joanna B Goldberg
- Division of Pulmonology, Asthma, Cystic Fibrosis and Sleep, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Balázs Rada
- Department of Infectious Diseases, College of Veterinary Medicine, The University of Georgia, Athens, GA, USA.
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Schmidt H, Höpfer LM, Wohlgemuth L, Knapp CL, Mohamed AOK, Stukan L, Münnich F, Hüsken D, Koller AS, Stratmann AEP, Müller P, Braun CK, Fabricius D, Bode SFN, Huber-Lang M, Messerer DAC. Multimodal analysis of granulocytes, monocytes, and platelets in patients with cystic fibrosis before and after Elexacaftor-Tezacaftor-Ivacaftor treatment. Front Immunol 2023; 14:1180282. [PMID: 37457734 PMCID: PMC10347380 DOI: 10.3389/fimmu.2023.1180282] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 05/15/2023] [Indexed: 07/18/2023] Open
Abstract
Cystic fibrosis (CF) is a monogenetic disease caused by an impairment of the cystic fibrosis transmembrane conductance regulator (CFTR). CF affects multiple organs and is associated with acute and chronic inflammation. In 2020, Elexacaftor-Tezacaftor-Ivacaftor (ETI) was approved to enhance and restore the remaining CFTR functionality. This study investigates cellular innate immunity, with a focus on neutrophil activation and phenotype, comparing healthy volunteers with patients with CF before (T1, n = 13) and after six months (T2, n = 11) of ETI treatment. ETI treatment reduced sweat chloride (T1: 95 mmol/l (83|108) vs. T2: 32 mmol/l (25|62), p < 0.01, median, first|third quartile) and significantly improved pulmonal function (FEV1 T1: 2.66 l (1.92|3.04) vs. T2: 3.69 l (3.00|4.03), p < 0.01). Moreover, there was a significant decrease in the biomarker human epididymis protein 4 (T1: 6.2 ng/ml (4.6|6.3) vs. T2: 3.0 ng/ml (2.2|3.7), p < 0.01) and a small but significant decrease in matrix metallopeptidase 9 (T1: 45.5 ng/ml (32.5|140.1) vs. T2: 28.2 ng/ml (18.2|33.6), p < 0.05). Neutrophil phenotype (CD10, CD11b, CD62L, and CD66b) and function (radical oxygen species generation, chemotactic and phagocytic activity) remained largely unaffected by ETI treatment. Likewise, monocyte phenotype and markers of platelet activation were similar at T1 and T2. In summary, the present study confirmed a positive impact on patients with CF after ETI treatment. However, neither beneficial nor harmful effects of ETI treatment on cellular innate immunity could be detected, possibly due to the study population consisting of patients with well-controlled CF.
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Affiliation(s)
- Hanna Schmidt
- Department of Pediatric and Adolescent Medicine, University Hospital Ulm, Ulm, Germany
| | - Larissa Melina Höpfer
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - Lisa Wohlgemuth
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - Christiane Leonie Knapp
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | | | - Laura Stukan
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - Frederik Münnich
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - Dominik Hüsken
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | | | | | - Paul Müller
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - Christian Karl Braun
- Department of Pediatric and Adolescent Medicine, University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, Ulm University, Ulm, Germany
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service and University Hospital Ulm, Ulm, Germany
| | - Dorit Fabricius
- Department of Pediatric and Adolescent Medicine, University Hospital Ulm, Ulm, Germany
| | | | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - David Alexander Christian Messerer
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
- Department of Transfusion Medicine and Hemostaseology, Friedrich-Alexander University Erlangen-Nuremberg, University Hospital Erlangen, Erlangen, Germany
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8
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Bakalović G, Bokonjić D, Mihajlović D, Čolić M, Mališ V, Drakul M, Tomić S, Jojić I, Rakočević S, Popović D, Kozić L, Vasiljević M, Bekić M, Mašić S, Ljuboja O. Dysfunctions of Neutrophils in the Peripheral Blood of Children with Cystic Fibrosis. Biomedicines 2023; 11:1725. [PMID: 37371820 DOI: 10.3390/biomedicines11061725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Dysfunction of neutrophils in patients with cystic fibrosis (CF) is best characterized in bronchoalveolar lavage (BAL), whereas peripheral blood neutrophils are less examined, and the results are contradictory, especially in younger populations. Therefore, this work aimed to study functional and phenotypic changes in circulating neutrophils in children with CF. The study included 19 CF children (5-17 years) and 14 corresponding age-matched healthy children. Isolated neutrophils were cultured either alone or with different stimuli. Several functions were studied: apoptosis, NET-osis, phagocytosis, and production of reactive oxygen species (ROS), neutrophil elastase (NE), and 11 cytokines. In addition, the expression of 20 molecules involved in different functions of neutrophils was evaluated by using flow cytometry. CF neutrophils showed reduced apoptosis and lower production of NE and IL-18 compared to the healthy controls, whereas IL-8 was augmented. All of these functions were further potentiated after neutrophil stimulation, which included higher ROS production and the up-regulation of CD11b and IL-10 expression. NET-osis was higher only when neutrophils from moderate-severe CF were treated with Pseudomonas aeruginosa, and the process correlated with forced expiratory volume in the first second (FEV1). Phagocytosis was not significantly changed. In conclusion, circulating neutrophils from children with CF showed fewer impaired changes in phenotype than in function. Functional abnormalities, which were already present at the baseline levels in neutrophils, depended on the type of stimuli that mimicked different activation states of these cells at the site of infection.
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Affiliation(s)
- Ganimeta Bakalović
- Pediatric Clinic, Clinical Center of the University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina
| | - Dejan Bokonjić
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
- Department of Pediatrics, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Dušan Mihajlović
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Miodrag Čolić
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
- Serbian Academy of Sciences and Arts, 11000 Belgrade, Serbia
| | - Vanja Mališ
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Marija Drakul
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Sergej Tomić
- Institute for the Application of Nuclear Energy, University of Belgrade, 11080 Belgrade, Serbia
| | - Ivan Jojić
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Sara Rakočević
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Darinka Popović
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Ljiljana Kozić
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Miloš Vasiljević
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Marina Bekić
- Institute for the Application of Nuclear Energy, University of Belgrade, 11080 Belgrade, Serbia
| | - Srđan Mašić
- Center for Biomedical Sciences, Faculty of Medicine Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina
| | - Olivera Ljuboja
- Clinic for Children's Diseases, University Clinical Center of Banja Luka, 51000 Banja Luka, Bosnia and Herzegovina
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