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Ehrhardt B, Angstmann H, Höschler B, Kovacevic D, Hammer B, Roeder T, Rabe KF, Wagner C, Uliczka K, Krauss-Etschmann S. Airway specific deregulation of asthma-related serpins impairs tracheal architecture and oxygenation in D. melanogaster. Sci Rep 2024; 14:16567. [PMID: 39019933 PMCID: PMC11255251 DOI: 10.1038/s41598-024-66752-0] [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: 09/28/2023] [Accepted: 07/03/2024] [Indexed: 07/19/2024] Open
Abstract
Serine proteases are important regulators of airway epithelial homeostasis. Altered serum or cellular levels of two serpins, Scca1 and Spink5, have been described for airway diseases but their function beyond antiproteolytic activity is insufficiently understood. To close this gap, we generated fly lines with overexpression or knockdown for each gene in the airways. Overexpression of both fly homologues of Scca1 and Spink5 induced the growth of additional airway branches, with more variable results for the respective knockdowns. Dysregulation of Scca1 resulted in a general delay in fruit fly development, with increases in larval and pupal mortality following overexpression of this gene. In addition, the morphological changes in the airways were concomitant with lower tolerance to hypoxia. In conclusion, the observed structural changes of the airways evidently had a strong impact on the airway function in our model as they manifested in a lower physical fitness of the animals. We assume that this is due to insufficient tissue oxygenation. Future work will be directed at the identification of key molecular regulators following the airway-specific dysregulation of Scca1 and Spink5 expression.
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Affiliation(s)
- Birte Ehrhardt
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany
| | - Hanna Angstmann
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany
| | - Beate Höschler
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany
| | - Draginja Kovacevic
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany
- DZL Laboratory for Experimental Microbiome Research, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Barbara Hammer
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany
- DZL Laboratory for Experimental Microbiome Research, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Thomas Roeder
- Division of Molecular Physiology, Institute of Zoology, Christian-Albrechts University Kiel, Kiel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Klaus F Rabe
- Department of Pneumology, LungenClinic, Grosshansdorf, Germany
- Department of Medicine, Christian Albrechts University, Kiel, Germany
| | - Christina Wagner
- Division of Invertebrate Models, Priority Research Area Asthma and Allergy, Research Center Borstel, Borstel, Germany
| | - Karin Uliczka
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany
- Division of Invertebrate Models, Priority Research Area Asthma and Allergy, Research Center Borstel, Borstel, Germany
| | - Susanne Krauss-Etschmann
- Division of Early Life Origins of Chronic Lung Diseases, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Parkallee 1, 23845, Borstel, Germany.
- DZL Laboratory for Experimental Microbiome Research, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany.
- Institute of Experimental Medicine, Christian-Albrechts-University Kiel, Kiel, Germany.
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2
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Ouyang X, Reihill JA, Douglas LEJ, Dunne OM, Sergeant GP, Martin SL. House dust mite allergens induce Ca 2+ signalling and alarmin responses in asthma airway epithelial cells. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167079. [PMID: 38367901 DOI: 10.1016/j.bbadis.2024.167079] [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: 09/06/2023] [Revised: 01/15/2024] [Accepted: 02/11/2024] [Indexed: 02/19/2024]
Abstract
Type 2 inflammation in asthma develops with exposure to stimuli to include inhaled allergens from house dust mites (HDM). Features include mucus hypersecretion and the formation of pro-secretory ion transport characterised by elevated basal Cl- current. Studies using human sinonasal epithelial cells treated with HDM extract report a higher protease activated receptor-2 (PAR-2) agonist-induced calcium mobilisation that may be related to airway sensitisation by allergen-associated proteases. Herein, this study aimed to investigate the effect of HDM on Ca2+ signalling and inflammatory responses in asthmatic airway epithelial cells. Primary bronchial epithelial cells (hPBECs) from asthma donors cultured at air-liquid interface were used to assess electrophysiological, Ca2+ signalling and inflammatory responses. Differences were observed regarding Ca2+ signalling in response to PAR-2 agonist 2-Furoyl-LIGRLO-amide (2-FLI), and equivalent short-circuit current (Ieq) in response to trypsin and 2-FLI, in ALI-asthma and healthy hPBECs. HDM treatment led to increased levels of intracellular cations (Ca2+, Na+) and significantly reduced the 2-FLI-induced change of Ieq in asthma cells. Apical HDM-induced Ca2+ mobilisation was found to mainly involve the activation of PAR-2 and PAR-4-associated store-operated Ca2+ influx and TRPV1. In contrast, PAR-2, PAR-4 antagonists and TRPV1 antagonist only showed slight impact on basolateral HDM-induced Ca2+ mobilisation. HDM trypsin-like serine proteases were the main components leading to non-amiloride sensitive Ieq and also increased interleukin-33 (IL-33) and thymic stromal lymphopoietin (TSLP) from asthma hPBECs. These studies add further insight into the complex mechanisms associated with HDM-induced alterations in cell signalling and their relevance to pathological changes within asthma.
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Affiliation(s)
- Xuan Ouyang
- School of Pharmacy, Queen's University Belfast, BT9 7BL, UK
| | | | | | - Orla M Dunne
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Gerard P Sergeant
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dublin Road, Dundalk, Co. Louth, Ireland
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Chalmers JD, Kettritz R, Korkmaz B. Dipeptidyl peptidase 1 inhibition as a potential therapeutic approach in neutrophil-mediated inflammatory disease. Front Immunol 2023; 14:1239151. [PMID: 38162644 PMCID: PMC10755895 DOI: 10.3389/fimmu.2023.1239151] [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: 06/12/2023] [Accepted: 11/14/2023] [Indexed: 01/03/2024] Open
Abstract
Neutrophils have a critical role in the innate immune response to infection and the control of inflammation. A key component of this process is the release of neutrophil serine proteases (NSPs), primarily neutrophil elastase, proteinase 3, cathepsin G, and NSP4, which have essential functions in immune modulation and tissue repair following injury. Normally, NSP activity is controlled and modulated by endogenous antiproteases. However, disruption of this homeostatic relationship can cause diseases in which neutrophilic inflammation is central to the pathology, such as chronic obstructive pulmonary disease (COPD), alpha-1 antitrypsin deficiency, bronchiectasis, and cystic fibrosis, as well as many non-pulmonary pathologies. Although the pathobiology of these diseases varies, evidence indicates that excessive NSP activity is common and a principal mediator of tissue damage and clinical decline. NSPs are synthesized as inactive zymogens and activated primarily by the ubiquitous enzyme dipeptidyl peptidase 1, also known as cathepsin C. Preclinical data confirm that inactivation of this protease reduces activation of NSPs. Thus, pharmacological inhibition of dipeptidyl peptidase 1 potentially reduces the contribution of aberrant NSP activity to the severity and/or progression of multiple inflammatory diseases. Initial clinical data support this view. Ongoing research continues to explore the role of NSP activation by dipeptidyl peptidase 1 in different disease states and the potential clinical benefits of dipeptidyl peptidase 1 inhibition.
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Affiliation(s)
- James D. Chalmers
- Department of Molecular and Clinical Medicine, Ninewells Hospital and Medical School, Dundee, United Kingdom
| | - Ralph Kettritz
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité Universitätsmedizin, Berlin, Germany
| | - Brice Korkmaz
- INSERM UMR-1100, Research Center for Respiratory Diseases, University of Tours, Tours, France
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4
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Cuenca I, Botella C, Moya-Quiles MR, Jimenez-Coll V, Galian JA, Martinez-Banaclocha H, Muro-Pérez M, Minguela A, Legaz I, Muro M. Genotypic Frequencies of Mutations Associated with Alpha-1 Antitrypsin Deficiency in Unrelated Bone Marrow Donors from the Murcia Region Donor Registry in the Southeast of Spain. Diagnostics (Basel) 2023; 13:2845. [PMID: 37685383 PMCID: PMC10486455 DOI: 10.3390/diagnostics13172845] [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: 07/27/2023] [Revised: 08/27/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
Alpha-1 antitrypsin (AAT1) deficiency (AAT1D) is an inherited disease with an increased risk of chronic obstructive pulmonary disease (COPD), liver disease, and skin and blood vessel problems. AAT1D is caused by mutations in the SERPINE1 gene (Serine Protease Inhibitor, group A, member 1). Numerous variants of this gene, the Pi system, have been identified. The most frequent allelic variants are Pi*M, Pi*S, and Pi*Z. The development of COPD requires both a genetic predisposition and the contribution of an environmental factor, smoking being the most important. Studies on this deficiency worldwide are very scarce, and it is currently considered a rare disease because it is underdiagnosed. The aim of this study was to analyze the genotypic frequencies of mutations associated with AAT1 deficiency in unrelated bone marrow donors from the donor registry of the Region of Murcia in southeastern Spain due to the high risk of presenting with different pathologies and underdiagnosis in the population. A total of 112 DNA-healthy voluntary unrelated bone marrow donors from different parts of the Region of Murcia were analyzed retrospectively. AAT1 deficiency patient testing involved an automated biochemical screening routine. The three main variants, Pi*M, Pi*Z, and Pi*S, were analyzed in the SERPINE1 gene. Our results showed a frequency of 3.12% of the Pi*Z (K342) mutation in over 224 alleles tested in the healthy population. The frequency of Pi*S (V264) was 11.1%. The frequency of the haplotype with the most dangerous mutation, EK342 EE264, was 4.46%, and the frequency of EK342 EV264 was 1.78% in the healthy population. Frequencies of other EE342 EV264-mutated haplotypes accounted for 18.7%. As for the EE342 VV264 haplotype, 0.89% of the total healthy population presented heterozygous for the EV264 mutation and one individual presented homozygous for the VV264 mutation. In conclusion, the frequencies of Pi mutations in the healthy population of the Region of Murcia were not remarkably different from the few studies reported in Spain. The genotype and haplotype frequencies followed the usual pattern. Health authorities should be aware of this high prevalence of the Pi*S allelic variant and pathological genotypes such as Pi*MZ and Pi*SZ in the healthy population if they consider screening the smoking population.
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Affiliation(s)
- Irene Cuenca
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - Carmen Botella
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - María Rosa Moya-Quiles
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - Víctor Jimenez-Coll
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - José Antonio Galian
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - Helios Martinez-Banaclocha
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - Manuel Muro-Pérez
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - Alfredo Minguela
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
| | - Isabel Legaz
- Department of Legal and Forensic Medicine, Biomedical Research Institute of Murcia (IMIB), Regional Campus of International Excellence “Campus Mare Nostrum”, Faculty of Medicine, University of Murcia (UMU), 30100 Murcia, Spain
| | - Manuel Muro
- Immunology Service, University Clinical Hospital “Virgen de la Arrixaca”, Biomedical Research Institute of Murcia (IMIB), 30120 Murcia, Spain
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5
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Chen Y, Yu X, Yan Z, Zhang S, Zhang J, Guo W. Role of epithelial sodium channel-related inflammation in human diseases. Front Immunol 2023; 14:1178410. [PMID: 37559717 PMCID: PMC10407551 DOI: 10.3389/fimmu.2023.1178410] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/29/2023] [Indexed: 08/11/2023] Open
Abstract
The epithelial sodium channel (ENaC) is a heterotrimer and is widely distributed throughout the kidneys, blood vessels, lungs, colons, and many other organs. The basic role of the ENaC is to mediate the entry of Na+ into cells; the ENaC also has an important regulatory function in blood pressure, airway surface liquid (ASL), and endothelial cell function. Aldosterone, serum/glucocorticoid kinase 1 (SGK1), shear stress, and posttranslational modifications can regulate the activity of the ENaC; some ion channels also interact with the ENaC. In recent years, it has been found that the ENaC can lead to immune cell activation, endothelial cell dysfunction, aggravated inflammation involved in high salt-induced hypertension, cystic fibrosis, pseudohypoaldosteronism (PHA), and tumors; some inflammatory cytokines have been reported to have a regulatory role on the ENaC. The ENaC hyperfunction mediates the increase of intracellular Na+, and the elevated exchange of Na+ with Ca2+ leads to an intracellular calcium overload, which is an important mechanism for ENaC-related inflammation. Some of the research on the ENaC is controversial or unclear; we therefore reviewed the progress of studies on the role of ENaC-related inflammation in human diseases and their mechanisms.
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Affiliation(s)
- Yabin Chen
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- National Organ Transplantation (Liver &Kidney Transplantation) Physician Training Centre, Zhengzhou, China
- National Regional Medical Treatment Centre of Henan Organ Transplantation, Zhengzhou, China
| | - Xiao Yu
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- National Organ Transplantation (Liver &Kidney Transplantation) Physician Training Centre, Zhengzhou, China
- National Regional Medical Treatment Centre of Henan Organ Transplantation, Zhengzhou, China
| | - Zhiping Yan
- Henan Organ Transplantation Centre, Zhengzhou, China
- Henan Engineering and Research Center for Diagnosis and Treatment of Hepatobiliary and Pancreatic Surgical Diseases, Zhengzhou, China
| | - Shuijun Zhang
- Henan Research Centre for Organ Transplantation, Zhengzhou, China
| | - Jiacheng Zhang
- Henan Key Laboratory for Digestive Organ Transplantation, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenzhi Guo
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Open and Key Laboratory for Hepatobiliary and Pancreatic Surgery and Digestive Organ Transplantation at Henan Universities, Zhengzhou, China
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Plasse TF, Fathi R, Fehrmann C, McComsey GA. Upamostat: a serine protease inhibitor for antiviral, gastrointestinal, and anticancer indications. Expert Opin Investig Drugs 2023; 32:1095-1103. [PMID: 37970658 DOI: 10.1080/13543784.2023.2284385] [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: 05/24/2023] [Accepted: 11/13/2023] [Indexed: 11/17/2023]
Abstract
INTRODUCTION Serine proteases are involved in many normal metabolic processes but also contribute to diseases of several organ systems, including viral and gastrointestinal diseases and oncology. Upamostat is an orally bioavailable prodrug of WX-UK1, which is most active against trypsins and closely related enzymes. AREAS COVERED Research over the past two decades suggests several diseases in the three areas noted above which upamostat may be active. Upamostat has been studied clinically against several cancers and for outpatient treatment of COVID-19. Preclinical and clinical pharmacokinetic and metabolism studies demonstrate good bioavailability, sustained tissue levels, and high concentrations of the active moiety, WX-UK1, in stool, potentially important for treatment of gastrointestinal diseases. Clinical studies suggest activity against SARS-CoV-2; results against pancreatic cancer are also encouraging, though studies in both indications are not definitive. The drug was very well tolerated for periods of 2 weeks to several months. EXPERT OPINION Upamostat is an orally bioavailable serine protease inhibitor with an excellent safety profile and favorable pharmacokinetic properties. It has demonstrated preliminary evidence of efficacy against COVID-19, and nonclinical data suggest potential applicability against other viral illnesses, gastrointestinal diseases, and cancer.
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Affiliation(s)
- T F Plasse
- RedHill Biopharma, Ltd, Tel Aviv, Israel
| | - R Fathi
- RedHill Biopharma, Ltd, Tel Aviv, Israel
| | - C Fehrmann
- CEEF Solutions, Beaconsfield, Quebec, Canada
| | - G A McComsey
- CEEF Solutions, Beaconsfield, Quebec, Canada
- University Hospitals of Cleveland and Case Western Reserve University, Cleveland, OH, USA
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Huang S, Cao G, Dai D, Xu Q, Ruiz S, Shindo S, Nakamura S, Kawai T, Lin J, Han X. Porphyromonas gingivalis outer membrane vesicles exacerbate retinal microvascular endothelial cell dysfunction in diabetic retinopathy. Front Microbiol 2023; 14:1167160. [PMID: 37250057 PMCID: PMC10213754 DOI: 10.3389/fmicb.2023.1167160] [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: 02/22/2023] [Accepted: 04/14/2023] [Indexed: 05/31/2023] Open
Abstract
Diabetic retinopathy (DR) is one of the leading causes of blindness. Periodontitis is one of the highest oral incidences and has been closely related to various systemic conditions through Porphyromonas gingivalis (P. gingivalis). P. gingivalis OMVs, derived from P. gingivalis, can cause endothelial dysfunction and potentially affect microvascular diseases. Current epidemiological studies provide limited evidence suggesting that periodontitis is associated with DR. However, there is a lack of basic research elucidating how periodontitis affects the severity of DR. This study aimed to explore the potential of P. gingivalis OMVs to contribute to the pathogenesis of DR and explore how it affect the retinal microvascular endothelium. The results demonstrated that P. gingivalis OMVs accelerated the blood-retinal barrier damage in DR mice. In vitro studies showed that the expression of inflammatory factors in human retinal microvascular endothelial cells (HRMECs) was increased after P. gingivalis OMVs stimulation, and the increased reactive oxygen species production, mitochondrial dysfunction, apoptosis, and altered endothelial permeability were observed in HRMECs under P. gingivalis OMVs stimulation. In addition, we found that protease-activated receptor-2 (PAR-2) regulated OMVs-induced TNF-α, MMP-9 mRNA expression, cell death, and endothelial permeability. Overall, we suggested that P. gingivalis OMVs induced mitochondria-related cell death of HRMECs and accelerated endothelial dysfunction, thus aggravating DR, in which PAR-2 plays a potential role. This study is the first research report to delineate the potential molecular mechanism of P. gingivalis OMVs on DR pathogenesis, which uniquely focused on elucidating the possible impact of periodontal pathogen derivatives on DR progression.
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Affiliation(s)
- Shengyuan Huang
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Guoqin Cao
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Dong Dai
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qiuping Xu
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Sunniva Ruiz
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Satoru Shindo
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Shin Nakamura
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Toshihisa Kawai
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Jiang Lin
- Department of Stomatology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xiaozhe Han
- Department of Oral Science and Translation Research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
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Yakupu A, Zhang D, Guan H, Jiang M, Dong J, Niu Y, Tang J, Liu Y, Ma X, Lu S. Single-cell analysis reveals melanocytes may promote inflammation in chronic wounds through cathepsin G. Front Genet 2023; 14:1072995. [PMID: 36755572 PMCID: PMC9900029 DOI: 10.3389/fgene.2023.1072995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/09/2023] [Indexed: 01/24/2023] Open
Abstract
During acute wound (AW) healing, a series of proper communications will occur between different epidermal cells at precise temporal stages to restore the integrity of the skin. However, it is still unclear what variation happened in epidermal cell interaction in the chronic wound environment. To provide new insights into chronic wound healing, we reconstructed the variations in the epidermal cell-cell communication network that occur in chronic wound healing via single-cell RNA-seq (scRNA-seq) data analysis. We found that the intricate cellular and molecular interactions increased in pressure ulcer (PU) compared to AW, especially the PARs signaling pathways were significantly upregulated. It shows that the PARs signaling pathways' main source was melanocytes and the CTSG-F2RL1 ligand-receptor pairs were its main contributor. Cathepsin G (CatG or CTSG) is a serine protease mainly with trypsin- and chymotrypsin-like specificity. It is synthesized and secreted by some immune or non-immune cells. Whereas, it has not been reported that melanocytes can synthesize and secrete the CTSG. F2R Like Trypsin Receptor 1 (F2RL1) is a member of proteinase-activated receptors (PARs) that are irreversibly activated by proteolytic cleavage and its stimulation can promote inflammation and inflammatory cell infiltration. In this study, we found that melanocytes increased in pressure ulcers, melanocytes can synthesize and secrete the CTSG and may promote inflammation in chronic wounds through CTSG-F2RL1 pairs, which may be a novel potential target and a therapeutic strategy in the treatment of chronic wounds.
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Affiliation(s)
- Aobuliaximu Yakupu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Di Zhang
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Haonan Guan
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Minfei Jiang
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiaoyun Dong
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yiwen Niu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiajun Tang
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yingkai Liu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xian Ma
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,*Correspondence: Xian Ma, ; Shuliang Lu,
| | - Shuliang Lu
- Department of Burn, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,Wound Healing Center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,*Correspondence: Xian Ma, ; Shuliang Lu,
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9
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An optimized protocol to assess trypsin activity in biological samples. MONATSHEFTE FUR CHEMIE 2023. [DOI: 10.1007/s00706-022-03028-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Ferguson TEG, Reihill JA, Martin SL, Walker B. Novel Inhibitors and Activity-Based Probes Targeting Trypsin-Like Serine Proteases. Front Chem 2022; 10:782608. [PMID: 35529696 PMCID: PMC9068901 DOI: 10.3389/fchem.2022.782608] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
The trypsin-like proteases (TLPs) play widespread and diverse roles, in a host of physiological and pathological processes including clot dissolution, extracellular matrix remodelling, infection, angiogenesis, wound healing and tumour invasion/metastasis. Moreover, these enzymes are involved in the disruption of normal lung function in a range of respiratory diseases including allergic asthma where several allergenic proteases have been identified. Here, we report the synthesis of a series of peptide derivatives containing an N-alkyl glycine analogue of arginine, bearing differing electrophilic leaving groups (carbamate and triazole urea), and demonstrate their function as potent, irreversible inhibitors of trypsin and TLPs, to include activities from cockroach extract. As such, these inhibitors are suitable for use as activity probes (APs) in activity-based profiling (ABP) applications.
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Affiliation(s)
- Timothy E G Ferguson
- Biomolecular Sciences Research Group, School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - James A Reihill
- Biomolecular Sciences Research Group, School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - S Lorraine Martin
- Biomolecular Sciences Research Group, School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | - Brian Walker
- Biomolecular Sciences Research Group, School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
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Trypsin enhances SARS-CoV-2 infection by facilitating viral entry. Arch Virol 2022; 167:441-458. [PMID: 35079901 PMCID: PMC8789370 DOI: 10.1007/s00705-021-05343-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 11/10/2021] [Indexed: 12/28/2022]
Abstract
Coronaviruses infect cells by cytoplasmic or endosomal membrane fusion, driven by the spike (S) protein, which must be primed by proteolytic cleavage at the S1/S2 furin cleavage site (FCS) and the S2′ site by cellular proteases. Exogenous trypsin as a medium additive facilitates isolation and propagation of several coronaviruses in vitro. Here, we show that trypsin enhances severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in cultured cells and that SARS-CoV-2 enters cells via either a non-endosomal or an endosomal fusion pathway, depending on the presence of trypsin. Interestingly, trypsin enabled viral entry at the cell surface and led to more efficient infection than trypsin-independent endosomal entry, suggesting that trypsin production in the target organs may trigger a high level of replication of SARS-CoV-2 and cause severe tissue injury. Extensive syncytium formation and enhanced growth kinetics were observed only in the presence of exogenous trypsin when cell-adapted SARS-CoV-2 strains were tested. During 50 serial passages without the addition of trypsin, a specific R685S mutation occurred in the S1/S2 FCS (681PRRAR685) that was completely conserved but accompanied by several mutations in the S2 fusion subunit in the presence of trypsin. These findings demonstrate that the S1/S2 FCS is essential for proteolytic priming of the S protein and fusion activity for SARS-CoV-2 entry but not for viral replication. Our data can potentially contribute to the improvement of SARS-CoV-2 production for the development of vaccines or antivirals and motivate further investigations into the explicit functions of cell-adaptation-related genetic drift in SARS-CoV-2 pathogenesis.
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Gunther RC, Bharathi V, Miles SD, Tumey LR, Schmedes CM, Tatsumi K, Bridges MD, Martinez D, Montgomery SA, Beck MA, Camerer E, Mackman N, Antoniak S. Myeloid Protease-Activated Receptor-2 Contributes to Influenza A Virus Pathology in Mice. Front Immunol 2021; 12:791017. [PMID: 34925374 PMCID: PMC8671937 DOI: 10.3389/fimmu.2021.791017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/12/2021] [Indexed: 11/13/2022] Open
Abstract
BackgroundInnate immune responses to influenza A virus (IAV) infection are initiated in part by toll-like receptor 3 (TLR3). TLR3-dependent signaling induces an antiviral immune response and an NFκB-dependent inflammatory response. Protease-activated receptor 2 (PAR2) inhibits the antiviral response and enhances the inflammatory response. PAR2 deficiency protected mice during IAV infection. However, the PAR2 expressing cell-types contributing to IAV pathology in mice and the mechanism by which PAR2 contributes to IAV infection is unknown.MethodsIAV infection was analyzed in global (Par2-/-), myeloid (Par2fl/fl;LysMCre+) and lung epithelial cell (EpC) Par2 deficient (Par2fl/fl;SPCCre+) mice and their respective controls (Par2+/+ and Par2fl/fl). In addition, the effect of PAR2 activation on polyinosinic-polycytidylic acid (poly I:C) activation of TLR3 was analyzed in bone marrow-derived macrophages (BMDM). Lastly, we determined the effect of PAR2 inhibition in wild-type (WT) mice.ResultsAfter IAV infection, Par2-/- and mice with myeloid Par2 deficiency exhibited increased survival compared to infected controls. The improved survival was associated with reduced proinflammatory mediators and reduced cellular infiltration in bronchoalveolar lavage fluid (BALF) of Par2-/- and Par2fl/fl;LysMCre+ 3 days post infection (dpi) compared to infected control mice. Interestingly, Par2fl/fl;SPCCre+ mice showed no survival benefit compared to Par2fl/fl. In vitro studies showed that Par2-/- BMDM produced less IL6 and IL12p40 than Par2+/+ BMDM after poly I:C stimulation. In addition, activation of PAR2 on Par2+/+ BMDM increased poly I:C induction of IL6 and IL12p40 compared to poly I:C stimulation alone. Importantly, PAR2 inhibition prior to IAV infection protect WT mice.ConclusionGlobal Par2 or myeloid cell but not lung EpC Par2 deficiency was associated with reduced BALF inflammatory markers and reduced IAV-induced mortality. Our study suggests that PAR2 may be a therapeutic target to reduce IAV pathology.
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Affiliation(s)
- Randall C. Gunther
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Vanthana Bharathi
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Stephen D. Miles
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Lauryn R. Tumey
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Clare M. Schmedes
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Kohei Tatsumi
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Meagan D. Bridges
- UNC Blood Research Center, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - David Martinez
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Stephanie A. Montgomery
- UNC Lineberger Comprehensive Cancer Center, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Melinda A. Beck
- Department of Nutrition, Gillings School of Global Public Health, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Eric Camerer
- Department of Medicine, Université de Paris, Paris Cardiovascular Research Center (PARCC), INSERM UMR 970, Paris, France
| | - Nigel Mackman
- UNC Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Silvio Antoniak
- UNC Blood Research Center, UNC Lineberger Comprehensive Cancer Center, UNC McAllister Heart Institute, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- *Correspondence: Silvio Antoniak,
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