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Khan D, Li X, Hashimoto T, Tanikawa R, Niemela M, Lawton M, Muhammad S. Current Mouse Models of Intracranial Aneurysms: Analysis of Pharmacological Agents Used to Induce Aneurysms and Their Impact on Translational Research. J Am Heart Assoc 2024; 13:e031811. [PMID: 38258667 PMCID: PMC11056163 DOI: 10.1161/jaha.123.031811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/06/2023] [Indexed: 01/24/2024]
Abstract
Intracranial aneurysms (IAs) are rare vascular lesions that are more frequently found in women. The pathophysiology behind the formation and growth of IAs is complex. Hence, to date, no single pharmacological option exists to treat them. Animal models, especially mouse models, represent a valuable tool to explore such complex scientific questions. Genetic modification in a mouse model of IAs, including deletion or overexpression of a particular gene, provides an excellent means for examining basic mechanisms behind disease pathophysiology and developing novel pharmacological approaches. All existing animal models need some pharmacological treatments, surgical interventions, or both to develop IAs, which is different from the spontaneous and natural development of aneurysms under the influence of the classical risk factors. The benefit of such animal models is the development of IAs in a limited time. However, clinical translation of the results is often challenging because of the artificial course of IA development and growth. Here, we summarize the continuous improvement in mouse models of IAs. Moreover, we discuss the pros and cons of existing mouse models of IAs and highlight the main translational roadblocks and how to improve them to increase the success of translational IA research.
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Affiliation(s)
- Dilaware Khan
- Department of NeurosurgeryMedical Faculty and University Hospital Düsseldorf, Heinrich‐Heine‐Universität DüsseldorfDüsseldorfGermany
| | - Xuanchen Li
- Department of NeurosurgeryMedical Faculty and University Hospital Düsseldorf, Heinrich‐Heine‐Universität DüsseldorfDüsseldorfGermany
| | - Tomoki Hashimoto
- Department of Neurosurgery and NeurobiologyBarrow Neurological InstitutePhoenixAZUSA
| | - Rokuya Tanikawa
- Department of Neurosurgery, Stroke CenterSapporo Teishinkai HospitalSapporoHokkaidoJapan
| | - Mika Niemela
- Department of NeurosurgeryUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Michael Lawton
- Department of Neurological SurgeryBarrow Neurological Institute, St. Joseph’s Hospital and Medical CenterPhoenixAZUSA
| | - Sajjad Muhammad
- Department of NeurosurgeryMedical Faculty and University Hospital Düsseldorf, Heinrich‐Heine‐Universität DüsseldorfDüsseldorfGermany
- Department of NeurosurgeryUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
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Garcia-Martinez I, Alen R, Pereira L, Povo-Retana A, Astudillo AM, Hitos AB, Gomez-Hurtado I, Lopez-Collazo E, Boscá L, Francés R, Lizasoain I, Moro MÁ, Balsinde J, Izquierdo M, Valverde ÁM. Saturated fatty acid-enriched small extracellular vesicles mediate a crosstalk inducing liver inflammation and hepatocyte insulin resistance. JHEP Rep 2023; 5:100756. [PMID: 37360906 PMCID: PMC10285285 DOI: 10.1016/j.jhepr.2023.100756] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 06/28/2023] Open
Abstract
Background & Aims Lipotoxicity triggers non-alcoholic fatty liver disease (NAFLD) progression owing to the accumulation of toxic lipids in hepatocytes including saturated fatty acids (SFAs), which activate pro-inflammatory pathways. We investigated the impact of hepatocyte- or circulating-derived small extracellular vesicles (sEV) secreted under NAFLD conditions on liver inflammation and hepatocyte insulin signalling. Methods sEV released by primary mouse hepatocytes, characterised and analysed by lipidomics, were added to mouse macrophages/Kupffer cells (KC) to monitor internalisation and inflammatory responses. Insulin signalling was analysed in hepatocytes exposed to conditioned media from sEV-loaded macrophages/KC. Mice were i.v. injected sEV to study liver inflammation and insulin signalling. Circulating sEV from mice and humans with NAFLD were used to evaluate macrophage-hepatocyte crosstalk. Results Numbers of sEV released by hepatocytes increased under NAFLD conditions. Lipotoxic sEV were internalised by macrophages through the endosomal pathway and induced pro-inflammatory responses that were ameliorated by pharmacological inhibition or deletion of Toll-like receptor-4 (TLR4). Hepatocyte insulin signalling was impaired upon treatment with conditioned media from macrophages/KC loaded with lipotoxic sEV. Both hepatocyte-released lipotoxic sEV and the recipient macrophages/KC were enriched in palmitic (C16:0) and stearic (C18:0) SFAs, well-known TLR4 activators. Upon injection, lipotoxic sEV rapidly reached KC, triggering a pro-inflammatory response in the liver monitored by Jun N-terminal kinase (JNK) phosphorylation, NF-κB nuclear translocation, pro-inflammatory cytokine expression, and infiltration of immune cells into the liver parenchyma. sEV-mediated liver inflammation was attenuated by pharmacological inhibition or deletion of TLR4 in myeloid cells. Macrophage inflammation and subsequent hepatocyte insulin resistance were also induced by circulating sEV from mice and humans with NAFLD. Conclusions We identified hepatocyte-derived sEV as SFA transporters targeting macrophages/KC and activating a TLR4-mediated pro-inflammatory response enough to induce hepatocyte insulin resistance. Impact and Implications Small extracellular vesicles (sEV) released by the hepatocytes under non-alcoholic fatty liver disease (NAFLD) conditions cause liver inflammation and insulin resistance in hepatocytes via paracrine hepatocyte-macrophage-hepatocyte crosstalk. We identified sEV as transporters of saturated fatty acids (SFAs) and potent lipotoxic inducers of liver inflammation. TLR4 deficiency or its pharmacological inhibition ameliorated liver inflammation induced by hepatocyte-derived lipotoxic sEV. Evidence of this macrophage-hepatocyte interactome was also found in patients with NAFLD, pointing to the relevance of sEV in SFA-mediated lipotoxicity in NAFLD.
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Affiliation(s)
- Irma Garcia-Martinez
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
| | - Rosa Alen
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
| | - Laura Pereira
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Adrián Povo-Retana
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
| | - Alma M. Astudillo
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Ana B. Hitos
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
| | - Isabel Gomez-Hurtado
- Instituto de Investigación Sanitaria ISABIAL, Hospital General Universitario Alicante, Alicante, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Eduardo Lopez-Collazo
- Instituto de Investigación Sanitaria La Paz (IdiPaz), Hospital Universitario La Paz, Madrid, Spain
| | - Lisardo Boscá
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
- Instituto de Investigación Sanitaria La Paz (IdiPaz), Hospital Universitario La Paz, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares (CIBERcv), Instituto de Salud Carlos III, Madrid, Spain
| | - Rubén Francés
- Instituto de Investigación Sanitaria ISABIAL, Hospital General Universitario Alicante, Alicante, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
- Dpto. Medicina Clínica, Universidad Miguel Hernández, San Juan de Alicante, Spain
| | - Ignacio Lizasoain
- Unidad de Investigación Neurovascular, Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense, Madrid, Spain
- Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain
| | - María Ángeles Moro
- Neurovascular Pathophysiology Group, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Jesús Balsinde
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Manuel Izquierdo
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
| | - Ángela M. Valverde
- Instituto de Investigaciones Biomédicas (IIBm) Alberto Sols (CSIC-UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), Instituto de Salud Carlos III, Madrid, Spain
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Déméautis T, Bouyssi A, Chapalain A, Guillemot J, Doublet P, Geloen A, George C, Menotti J, Glehen O, Devouassoux G, Bentaher A. Chronic Exposure to Secondary Organic Aerosols Causes Lung Tissue Damage. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:6085-6094. [PMID: 37014236 DOI: 10.1021/acs.est.2c08753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Recently, secondary organic aerosols (SOAs) emerged as a predominant component of fine particulate matter. However, the pathogenic mechanism(s) of SOAs are still poorly understood. Herein, we show that chronic exposure of mice to SOAs resulted in lung inflammation and tissue destruction. Histological analyses found lung airspace enlargement associated with massive inflammatory cell recruitment predominated by macrophages. Concomitant with such cell influx, our results found changes in the levels of a series of inflammatory mediators in response to SOA. Interestingly, we observed that the expression of the genes encoding for TNF-α and IL-6 increased significantly after one month of exposure to SOAs; mediators that have been largely documented to play a role in chronic pulmonary inflammatory pathologies. Cell culture studies confirmed these in vivo findings. Of importance as well, our study indicates increased matrix metalloproteinase proteolytic activity suggesting its contribution to lung tissue inflammation and degradation. Our work represents the first in vivo study, which reports that chronic exposure to SOAs leads to lung inflammation and tissue injury. Thus, we hope that these data will foster new studies to enhance our understanding of the underlying pathogenic mechanisms of SOAs and perhaps help in the design of therapeutic strategies against SOA-mediated lung injury.
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Affiliation(s)
- Tanguy Déméautis
- Inflammation and Immunity of the Respiratory Epithelium - EA3738 (CICLY) - South Medical University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du grand Revoyet, 69395 Pierre-Bénite, France
| | - Alexandra Bouyssi
- Inflammation and Immunity of the Respiratory Epithelium - EA3738 (CICLY) - South Medical University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du grand Revoyet, 69395 Pierre-Bénite, France
| | - Annelise Chapalain
- CIRI, Centre International de Recherche en Infectiologie, Team Legionella Pathogenesis, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007 Lyon, France
| | - Johann Guillemot
- CIRI, Centre International de Recherche en Infectiologie, Team Legionella Pathogenesis, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007 Lyon, France
| | - Patricia Doublet
- CIRI, Centre International de Recherche en Infectiologie, Team Legionella Pathogenesis, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007 Lyon, France
| | - Alain Geloen
- University of Lyon, UMR Ecologie Microbienne Lyon (LEM), CNRS 5557, INRAE 1418, Université Claude Bernard Lyon 1, VetAgro Sup, Research Team "Bacterial Opportunistic Pathogens and Environment" (BPOE), 69622 Villeurbanne, France
| | - Christian George
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 2 Avenue Albert Einstein, 69626 Villeurbanne, France
| | - Jean Menotti
- Inflammation and Immunity of the Respiratory Epithelium - EA3738 (CICLY) - South Medical University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du grand Revoyet, 69395 Pierre-Bénite, France
| | - Olivier Glehen
- Inflammation and Immunity of the Respiratory Epithelium - EA3738 (CICLY) - South Medical University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du grand Revoyet, 69395 Pierre-Bénite, France
- Service de chirurgie digestive et endocrinienne, CHU de Lyon HCL - GH Sud, 165 Chemin du Grand Revoyet, 69495 Pierre-Benite, France
| | - Gilles Devouassoux
- Inflammation and Immunity of the Respiratory Epithelium - EA3738 (CICLY) - South Medical University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du grand Revoyet, 69395 Pierre-Bénite, France
- Service de Pneumologie, Hôpital de la Croix Rousse, Hospices Civils de Lyon, UCB Lyon 1, 103 Grande Rue de la Croix-Rousse, 69004 Lyon, France
| | - Abderrazzak Bentaher
- Inflammation and Immunity of the Respiratory Epithelium - EA3738 (CICLY) - South Medical University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du grand Revoyet, 69395 Pierre-Bénite, France
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Roszkowiak J, McClean S, Mirończuk AM, Augustyniak D. The Direct Anti-Virulence but Not Bactericidal Activity of Human Neutrophil Elastase against Moraxella catarrhalis. Int J Mol Sci 2023; 24:ijms24076607. [PMID: 37047578 PMCID: PMC10094786 DOI: 10.3390/ijms24076607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/18/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
Neutrophil elastase (NE) contributes to innate antibacterial defense at both the intracellular (phagocytosis) and extracellular (degranulation, NETosis) levels. Moraxella catarrhalis, a human respiratory pathogen, can exist in an inflammatory milieu which contains NE. No data are available on the action of NE against M. catarrhalis or on the counteraction of NE-dependent host defenses by this pathogen. Using time-kill assays we found that bacteria are able to survive and replicate in the presence of NE. Transmission electron microscopy and flow cytometry studies with NE-treated bacteria revealed that while NE admittedly destabilizes the outer membrane leaflet, it does not cause cytoplasmic membrane rupture, suggesting that the enzyme does not target components that are essential for cell integrity. Using LC-MS/MS spectroscopy we determined that NE cleaved at least three virulent surface proteins in outer membrane vesicles (OMVs) of M. catarrhalis, including OMP CD, McaP, and TbpA. The cleavage of OMP CD contributes to the significant decrease in resistance to serum complement in the complement-resistant strain Mc6. The cleavage of McaP did not cause any sensitization to erythromycin nor did NE disturb its drug action. Identifying NE as a novel but subtle anti-virulence agent together with its extracellularly not-efficient bactericidal activity against M. catarrhalis may facilitate the pathogen’s existence in the airways under inflammation.
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Affiliation(s)
- Justyna Roszkowiak
- Department of Pathogen Biology and Immunology, Faculty of Biological Sciences, University of Wroclaw, 51-148 Wroclaw, Poland
| | - Siobhán McClean
- School of Biomolecular and Biomedical Sciences and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, D04 V1W8 Dublin, Ireland
| | - Aleksandra M. Mirończuk
- Laboratory for Biosustainability, Institute of Environmental Biology, Wroclaw University of Environmental and Life Sciences, 51-631 Wroclaw, Poland
| | - Daria Augustyniak
- Department of Pathogen Biology and Immunology, Faculty of Biological Sciences, University of Wroclaw, 51-148 Wroclaw, Poland
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da Matta VLR, Gonçalves AN, Gomes CMC, Chouman IH, Ferreira FM, Campos MB, Lima LV, Vasconcelos dos Santos T, Ramos PK, Furtado RR, Laurenti MD, Corbett CEP, Nakaya HI, Silveira FT. Gene Signatures of Symptomatic and Asymptomatic Clinical-Immunological Profiles of Human Infection by Leishmania (L.) chagasi in Amazonian Brazil. Microorganisms 2023; 11:microorganisms11030653. [PMID: 36985226 PMCID: PMC10058599 DOI: 10.3390/microorganisms11030653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/18/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Individuals infected with Leishmania (L.) chagasi may present different asymptomatic and symptomatic stages of infection, which vary in the clinical–immunological profiles that can be classified as asymptomatic infection (AI), subclinical resistant infection (SRI), indeterminate initial infection (III), subclinical oligosymptomatic infection (SOI), and symptomatic infection (SI) (=American visceral leishmaniasis, AVL). However, little is known about the molecular differences between individuals having each profile. Here, we performed whole-blood transcriptomic analyses of 56 infected individuals from Pará State (Brazilian Amazon), covering all five profiles. We then identified the gene signatures of each profile by comparing their transcriptome with those of 11 healthy individuals from the same area. Symptomatic individuals with SI (=AVL) and SOI profiles showed higher transcriptome perturbation when compared to those asymptomatic III, AI and SRI profiles, suggesting that disease severity may be associated with greater transcriptomic changes. Although the expression of many genes was altered on each profile, very few genes were shared among the profiles. This indicated that each profile has a unique gene signature. The innate immune system pathway was strongly activated only in asymptomatic AI and SRI profiles, suggesting the control of infection. In turn, pathways such as MHC Class II antigen presentation and NF-kB activation in B cells seemed to be specifically induced in symptomatic SI (=AVL) and SOI profiles. Moreover, cellular response to starvation was down-regulated in those symptomatic profiles. Overall, this study revealed five distinct transcriptional patterns associated to the clinical–immunological (symptomatic and asymptomatic) profiles of human L. (L.) chagasi-infection in the Brazilian Amazon.
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Affiliation(s)
- Vania Lucia R. da Matta
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - André N. Gonçalves
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - Cláudia Maria C. Gomes
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - Islam H. Chouman
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - Frederico M. Ferreira
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - Marliane B. Campos
- Parasitology Department, Evandro Chagas Institute, Health Surveillance Secretary, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Luciana V. Lima
- Parasitology Department, Evandro Chagas Institute, Health Surveillance Secretary, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Thiago Vasconcelos dos Santos
- Parasitology Department, Evandro Chagas Institute, Health Surveillance Secretary, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Patrícia Karla Ramos
- Parasitology Department, Evandro Chagas Institute, Health Surveillance Secretary, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Rodrigo R. Furtado
- Parasitology Department, Evandro Chagas Institute, Health Surveillance Secretary, Ministry of Health, Ananindeua 67030-000, Brazil
| | - Marcia D. Laurenti
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - Carlos Eduardo P. Corbett
- Laboratorio de Patologia de Molestias Infecciosas (LIM-50), Departamento de Patologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 01246 903, Brazil
| | - Helder I. Nakaya
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciencias Farmaceuticas, Universidade de Sao Paulo, Sao Paulo 05508-220, Brazil
- Hospital Israelita Albert Einstein, Sao Paulo 05652-900, Brazil
- Correspondence: (H.I.N.); (F.T.S.)
| | - Fernando T. Silveira
- Parasitology Department, Evandro Chagas Institute, Health Surveillance Secretary, Ministry of Health, Ananindeua 67030-000, Brazil
- Tropical Medicine Nucleus, Pará Federal University, Belém 67030-000, Brazil
- Correspondence: (H.I.N.); (F.T.S.)
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Kobpornchai P, Reamtong O, Phuphisut O, Malaitong P, Adisakwattana P. Serine protease inhibitor derived from Trichinella spiralis (TsSERP) inhibits neutrophil elastase and impairs human neutrophil functions. Front Cell Infect Microbiol 2022; 12:919835. [PMID: 36389172 PMCID: PMC9640929 DOI: 10.3389/fcimb.2022.919835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 09/14/2022] [Indexed: 11/29/2022] Open
Abstract
During early infection with Trichinella spiralis, host neutrophils destroy newborn larvae migrating in the bloodstream, preventing infection. However, parasites secrete various immunomodulatory molecules to escape the host’s defense mechanisms, allowing them to infect the host and live for long periods. T. spiralis secretes serine protease inhibitors (TsSERPs), which are key inhibitory molecules that regulate serine proteases involved in digestion and inflammation. However, the modulatory roles of TsSERP in the inhibition of neutrophil serine proteases (NSPs) and neutrophil functions are unknown. Therefore, the immunomodulatory properties of recombinant TsSERP1 (rTsSERP1) on NSPs and neutrophil functions were investigated in this study. rTsSERP1 preferentially inhibited human neutrophil elastase (hNE). In addition, incubation of rTsSERP1 with fMLP-induced neutrophils impaired their phagocytic ability. The formation of neutrophil extracellular traps (NETs) was activated with phorbol myristate acetate (PMA), and NETs were dramatically reduced when treated with rTsSERP1. Furthermore, rTsSERP1 suppressed the production of proinflammatory cytokines and chemokines during neutrophil activation, which are essential for neutrophil-mediated local or systemic inflammation regulation. In conclusion, T. spiralis immune evasion mechanisms are promoted by the inhibitory properties of TsSERP1 against neutrophil elastase and neutrophil defense functions, and these might be promising alternative treatment targets for inflammatory disorders.
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Affiliation(s)
- Porntida Kobpornchai
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Onrapak Reamtong
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Orawan Phuphisut
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Preeyarat Malaitong
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Poom Adisakwattana
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
- *Correspondence: Poom Adisakwattana,
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Huang P, Zhang J, Duan W, Jiao J, Leng A, Qu J. Plant polysaccharides with anti-lung injury effects as a potential therapeutic strategy for COVID-19. Front Pharmacol 2022; 13:982893. [DOI: 10.3389/fphar.2022.982893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/26/2022] [Indexed: 11/13/2022] Open
Abstract
When coronavirus disease 2019 (COVID-19) develops into the severe phase, lung injury, acute respiratory distress syndrome, and/or respiratory failure could develop within a few days. As a result of pulmonary tissue injury, pathomorphological changes usually present endothelial dysfunction, inflammatory cell infiltration of the lung interstitium, defective gas exchange, and wall leakage. Consequently, COVID-19 may progress to tremendous lung injury, ongoing lung failure, and death. Exploring the treatment drugs has important implications. Recently, the application of traditional Chinese medicine had better performance in reducing fatalities, relieving symptoms, and curtailing hospitalization. Through constant research and study, plant polysaccharides may emerge as a crucial resource against lung injury with high potency and low side effects. However, the absence of a comprehensive understanding of lung-protective mechanisms impedes further investigation of polysaccharides. In the present article, a comprehensive review of research into plant polysaccharides in the past 5 years was performed. In total, 30 types of polysaccharides from 19 kinds of plants have shown lung-protective effects through the pathological processes of inflammation, oxidative stress, apoptosis, autophagy, epithelial–mesenchymal transition, and immunomodulation by mediating mucin and aquaporins, macrophage, endoplasmic reticulum stress, neutrophil, TGF-β1 pathways, Nrf2 pathway, and other mechanisms. Moreover, the deficiencies of the current studies and the future research direction are also tentatively discussed. This research provides a comprehensive perspective for better understanding the mechanism and development of polysaccharides against lung injury for the treatment of COVID-19.
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Sabo P, Makaryan V, Dicken Y, Povodovski L, Rockah L, Bar T, Gabay M, Elinger D, Segal E, Haimov O, Antoshvili M, Drori AL, Poulsen T, Herman A, Emmanuel R, Dale DC. Mutant allele knockout with novel CRISPR nuclease promotes myelopoiesis in ELANE neutropenia. Mol Ther Methods Clin Dev 2022; 26:119-131. [PMID: 35795780 PMCID: PMC9240714 DOI: 10.1016/j.omtm.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 06/03/2022] [Indexed: 11/30/2022]
Abstract
Severe congenital neutropenia (SCN) is a life-threatening marrow failure disorder, usually caused by heterozygous mutations in ELANE. Potential genetic treatment strategies include biallelic knockout or gene correction via homology-directed repair (HDR). Such strategies, however, involve the potential loss of the essential function of the normal allele product or limited coverage of diverse monogenic mutations within the patient population, respectively. As an alternative, we have developed a novel CRISPR-based monoallelic knockout strategy that precisely targets the heterozygous sites of single-nucleotide polymorphisms (SNPs) associated with most ELANE mutated alleles. In vitro studies demonstrate that patients' unedited hematopoietic CD34+ cells have significant abnormalities in differentiation and maturation, consistent with the hematopoietic defect in SCN patients. Selective knockout of the mutant ELANE allele alleviated these cellular abnormalities and resulted in about 50%-70% increase in normally functioning neutrophils (p < 0.0001). Genomic analysis confirmed that ELANE knockout was specific to the mutant allele and involved no off-targets. These results demonstrate the therapeutic potential of selective allele editing that may be applicable to SCN and other autosomal dominant disorders.
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Affiliation(s)
- Peter Sabo
- Department of Medicine, University of Washington, Box 356422, 1959 NE Pacific Street, Room AA522, Seattle, WA 98195, USA
| | - Vahagn Makaryan
- Department of Medicine, University of Washington, Box 356422, 1959 NE Pacific Street, Room AA522, Seattle, WA 98195, USA
| | - Yosef Dicken
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | | | - Liat Rockah
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Tzlil Bar
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Matan Gabay
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Dalia Elinger
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Ella Segal
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Ora Haimov
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Maya Antoshvili
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | | | - Tanoya Poulsen
- Department of Medicine, University of Washington, Box 356422, 1959 NE Pacific Street, Room AA522, Seattle, WA 98195, USA
| | - Asael Herman
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - Rafi Emmanuel
- EmendoBio, Inc., 400 W 61 Street, #2330, New York NY 10069, USA
| | - David C. Dale
- Department of Medicine, University of Washington, Box 356422, 1959 NE Pacific Street, Room AA522, Seattle, WA 98195, USA
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9
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Yang M, Chen Q, Mei L, Wen G, An W, Zhou X, Niu K, Liu C, Ren M, Sun K, Xiao Q, Zhang L. Neutrophil elastase promotes neointimal hyperplasia by targeting toll-like receptor 4 (TLR4)-NF-κB signalling. Br J Pharmacol 2021; 178:4048-4068. [PMID: 34076894 DOI: 10.1111/bph.15583] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/18/2021] [Accepted: 05/25/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Neointimal hyperplasia (NIH) is the fundamental cause for vascular diseases and vascular smooth muscle cell (VSMC) dysregulation has been widely implicated in NIH. Neutrophil elastase is a potential therapeutic target for multiple diseases. We investigated the role of neutrophil elastase in VSMC functions and injury-induced NIH and explored the therapeutic potential of targeting neutrophil elastase in NIH. EXPERIMENTAL APPROACH VSMCs were used to analyse the effects of neutrophil elastase. Proteomic analysis was used to identify potential neutrophil elastase targets. Artery injury model and neutrophil elastase inhibitor GW311616A were used to investigate the role of neutrophil elastase in NIH. KEY RESULTS TNF-α up-regulated neutrophil elastase in VSMCs through modulating GAPBα/Runx1/CEBPα/c-Myb signalling. Up-regulated neutrophil elastase promoted VSMC migration, proliferation and inflammation. Toll-like receptor 4 (TLR4) was identified as a target protein for neutrophil elastase in VSMCs and the TLR4/MyD88/IRAK1/TRAF6/NF-κB regulatory axis was shown to be the signalling pathway for neutrophil elastase in VSMC pathology. Importantly, TLR4 inhibition abolished neutrophil elastase-mediated VSMC dysregulation. Injury-induced NIH was significantly reduced in both neutrophil elastase-deficient mice and mice treated with GW311616A. The formation of neutrophil extracellular traps was impaired in injured arteries from neutrophil elastase-deficient mice. Finally, a similar role for neutrophil elastase in human VSMC pathology was confirmed and we observed higher expression levels of neutrophil elastase but lower expression levels of TLR4 in human atherosclerotic lesions. CONCLUSION AND IMPLICATIONS We provide new insight into the molecular mechanisms underlying NIH and identify neutrophil elastase as a potential therapeutic target for vascular disease.
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Affiliation(s)
- Mei Yang
- Department of Cardiology and Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Qishan Chen
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Li Mei
- Department of Cardiology and Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Guanmei Wen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Lab of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Weiwei An
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Xinmiao Zhou
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Kaiyuan Niu
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Chenxin Liu
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Meixia Ren
- Fujian Key Laboratory of Geriatrics, Department of Geriatric Medicine, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Kun Sun
- Department of Pediatric Cardiology and Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qingzhong Xiao
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Lab of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Li Zhang
- Department of Cardiology and Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
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10
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Sriwattanapong K, Sa-Ard-Iam N, Boonprakong L, Subbalekha K, Trachoo V, Suratannon N, Porntaveetus T, Shotelersuk V. Reduced ELANE and SLPI expression compromises dental pulp cell activity. Cell Prolif 2021; 54:e13132. [PMID: 34580954 PMCID: PMC8560611 DOI: 10.1111/cpr.13132] [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: 06/04/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 02/03/2023] Open
Abstract
Background Patients with ELANE variants and severe congenital neutropenia (SCN) commonly develop oral complications. Whether they are caused only by low neutrophil count or the combination of neutropenia and aberrant dental cells is unknown. Methods Genetic variant was identified with exome sequencing. Dental pulp cells isolated from the SCN patient with an ELANE mutation were investigated for gene expression, enzyme activity, proliferation, colony formation, wound healing, apoptosis, ROS, attachment, spreading and response to lipopolysaccharide. Results ELANE cells had diminished expression of ELANE and SLPI and reduced neutrophil elastase activity. Moreover, ELANE cells exhibited impaired proliferation, colony forming, migration, attachment and spreading; and significantly increased ROS formation and apoptosis, corresponding with increased Cyclin D1 and MMP2 levels. The intrinsic levels of TGF‐β1 and TNF‐α were significantly increased; however, IL‐6, IL‐8 and NF‐kB1 were significantly decreased in ELANE cells compared with those in controls. After exposure to lipopolysaccharide, ELANE cells grew larger, progressed to more advanced cell spreading stages and showed significantly increased SLPI, TNF‐α and NF‐kB1 and tremendously increased IL‐6 and IL‐8 expression, compared with controls. Conclusion This study, for the first time, suggests that in addition to neutropenia, the aberrant levels and functions of ELANE, SLPI and their downstream molecules in pulp cells play an important role in oral complications in SCN patients. In addition, pulp cells with diminished neutrophil elastase and SLPI are highly responsive to inflammation.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Noppadol Sa-Ard-Iam
- Center of Excellence in Periodontal Disease and Dental Implant, Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Lawan Boonprakong
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Keskanya Subbalekha
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorapat Trachoo
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Narissara Suratannon
- Pediatric Allergy & Clinical Immunology Research Unit, Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
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11
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Ma J, Kummarapurugu AB, Hawkridge A, Ghosh S, Zheng S, Voynow JA. Neutrophil elastase-regulated macrophage sheddome/secretome and phagocytic failure. Am J Physiol Lung Cell Mol Physiol 2021; 321:L555-L565. [PMID: 34261337 DOI: 10.1152/ajplung.00499.2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Patients with cystic fibrosis (CF) have defective macrophage phagocytosis and efferocytosis. Several reports demonstrate that neutrophil elastase (NE), a major inflammatory protease in the CF airway, impairs macrophage phagocytic function. To date, NE-impaired macrophage phagocytic function has been attributed to cleavage of cell surface receptors or opsonins. We applied an unbiased proteomic approach to identify other potential macrophage targets of NE protease activity that may regulate phagocytic function. Using the murine macrophage cell line, RAW 264.7, human blood monocyte-derived macrophages, and primary alveolar macrophages from Cftr-null and wild-type littermate mice, we demonstrated that NE exposure blocked phagocytosis of Escherichia coli bio-particles. We performed liquid chromatography-tandem mass spectroscopy (LC-MS/MS) proteomic analysis of the conditioned media from RAW264.7 treated either with active NE or inactive (boiled) NE as a control. Out of 840 proteins identified in the conditioned media, active NE upregulated 142 proteins and downregulated 211 proteins. NE released not only cell surface proteins into the media but also cytoskeletal, mitochondrial, cytosolic, and nuclear proteins that were detected in the conditioned media. At least 32 proteins were associated with the process of phagocytosis including 11 phagocytic receptors [including lipoprotein receptor-related protein 1 (LRP1)], 7 proteins associated with phagocytic cup formation, and 14 proteins involved in phagocytic maturation (including calpain-2) and phagolysosome formation. NE had a broad effect on the proteome required for regulation of all stages of phagocytosis and phagolysosome formation. Furthermore, the NE sheddome/secretome included proteins from other macrophage cellular domains, suggesting that NE may globally regulate macrophage structure and function.
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Affiliation(s)
- Jonathan Ma
- Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, Virginia
| | - Apparao B Kummarapurugu
- Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, Virginia
| | - Adam Hawkridge
- Department of Pharmaceutics/Department of Pharmacotherapy & Outcomes Science, Virginia Commonwealth University School of Pharmacy, Richmond, Virginia
| | - Shobha Ghosh
- Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Shuo Zheng
- Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, Virginia
| | - Judith A Voynow
- Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, Virginia
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12
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Oriano M, Amati F, Gramegna A, De Soyza A, Mantero M, Sibila O, Chotirmall SH, Voza A, Marchisio P, Blasi F, Aliberti S. Protease-Antiprotease Imbalance in Bronchiectasis. Int J Mol Sci 2021; 22:5996. [PMID: 34206113 PMCID: PMC8199509 DOI: 10.3390/ijms22115996] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/27/2021] [Accepted: 05/29/2021] [Indexed: 12/12/2022] Open
Abstract
Airway inflammation plays a central role in bronchiectasis. Protease-antiprotease balance is crucial in bronchiectasis pathophysiology and increased presence of unopposed proteases activity may contribute to bronchiectasis onset and progression. Proteases' over-reactivity and antiprotease deficiency may have a role in increasing inflammation in bronchiectasis airways and may lead to extracellular matrix degradation and tissue damage. Imbalances in serine proteases and matrix-metallo proteinases (MMPs) have been associated to bronchiectasis. Active neutrophil elastase has been associated with disease severity and poor long-term outcomes in this disease. Moreover, high levels of MMPs have been associated with radiological and disease severity. Finally, severe deficiency of α1-antitrypsin (AAT), as PiSZ and PiZZ (proteinase inhibitor SZ and ZZ) phenotype, have been associated with bronchiectasis development. Several treatments are under study to reduce protease activity in lungs. Molecules to inhibit neutrophil elastase activity have been developed in both oral or inhaled form, along with compounds inhibiting dipeptydil-peptidase 1, enzyme responsible for the activation of serine proteases. Finally, supplementation with AAT is in use for patients with severe deficiency. The identification of different targets of therapy within the protease-antiprotease balance contributes to a precision medicine approach in bronchiectasis and eventually interrupts and disrupts the vicious vortex which characterizes the disease.
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Affiliation(s)
- Martina Oriano
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Francesco Amati
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
| | - Andrea Gramegna
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Anthony De Soyza
- Population and Health Science Institute, NIHR Biomedical Research Centre for Ageing & Freeman Hospital, Newcastle University, Newcastle NE2 4HH, UK;
| | - Marco Mantero
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Oriol Sibila
- Respiratory Department, Hospital Clinic, IDIBAPS, CIBERES, 08036 Barcelona, Spain;
| | - Sanjay H. Chotirmall
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 639798, Singapore;
| | - Antonio Voza
- Emergency Department, IRCCS Humanitas Research Teaching Hospital, 20122 Milan, Italy;
| | - Paola Marchisio
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
- Paediatric Highly Intensive Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Francesco Blasi
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Stefano Aliberti
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (M.O.); (F.A.); (A.G.); (M.M.); (P.M.); (F.B.)
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
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13
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Alfarouk KO, AlHoufie STS, Ahmed SBM, Shabana M, Ahmed A, Alqahtani SS, Alqahtani AS, Alqahtani AM, Ramadan AM, Ahmed ME, Ali HS, Bashir A, Devesa J, Cardone RA, Ibrahim ME, Schwartz L, Reshkin SJ. Pathogenesis and Management of COVID-19. J Xenobiot 2021; 11:77-93. [PMID: 34063739 PMCID: PMC8163157 DOI: 10.3390/jox11020006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/13/2022] Open
Abstract
COVID-19, occurring due to SARS-COV-2 infection, is the most recent pandemic disease that has led to three million deaths at the time of writing. A great deal of effort has been directed towards altering the virus trajectory and/or managing the interactions of the virus with its subsequent targets in the human body; these interactions can lead to a chain reaction-like state manifested by a cytokine storm and progress to multiple organ failure. During cytokine storms the ratio of pro-inflammatory to anti-inflammatory mediators is generally increased, which contributes to the instigation of hyper-inflammation and confers advantages to the virus. Because cytokine expression patterns fluctuate from one person to another and even within the same person from one time to another, we suggest a road map of COVID-19 management using an individual approach instead of focusing on the blockbuster process (one treatment for most people, if not all). Here, we highlight the biology of the virus, study the interaction between the virus and humans, and present potential pharmacological and non-pharmacological modulators that might contribute to the global war against SARS-COV-2. We suggest an algorithmic roadmap to manage COVID-19.
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Affiliation(s)
- Khalid O. Alfarouk
- Hala Alfarouk Cancer Center, Department of Evolutionary Pharmacology and Tumor Metabolism, Khartoum 11123, Sudan;
- Research Center, Zamzam University College, Khartoum 11123, Sudan;
| | - Sari T. S. AlHoufie
- Medical Laboratories Technology Department, College of Applied Medical Sciences, Taibah University, Medina 42353, Saudi Arabia;
| | - Samrein B. M. Ahmed
- College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates;
| | - Mona Shabana
- Pharmacology Department, Faculty of Medicine, Fayoum University, Fayoum 63514, Egypt;
| | - Ahmed Ahmed
- Department of Oesphogastric and General Surgery, University Hospitals of Leicester, Leicester LE5 4PW, UK;
| | - Saad S. Alqahtani
- Pharmacy Practice Research Unit, Clinical Pharmacy Department, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia;
| | - Ali S. Alqahtani
- Department of Medical Laboratories Sciences, College of Applied Medical Sciences, Najran University, Najran 66446, Saudi Arabia;
| | - Ali M. Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | - AbdelRahman M. Ramadan
- Department of Preventive Dental Sciences, Ibn Sina National College, Jeddah 22421, Saudi Arabia;
| | - Mohamed E. Ahmed
- Research Center, Zamzam University College, Khartoum 11123, Sudan;
- Department of Surgery, Faculty of Medicine Al-Neelain University, Khartoum 11111, Sudan
| | - Heyam S. Ali
- Faculty of Pharmacy, University of Khartoum, P. O. Box 321, Khartoum 11111, Sudan;
| | - Adil Bashir
- Hala Alfarouk Cancer Center, Department of Evolutionary Pharmacology and Tumor Metabolism, Khartoum 11123, Sudan;
- Institute of Endemic Diseases, University of Khartoum, Khartoum 11111, Sudan;
| | - Jesus Devesa
- Scientific Direction, Foltra Medical Centre, 15886 Teo, Spain;
| | - Rosa A. Cardone
- Department of Biosciences, Biotechnologies, and Biopharmaceutics, University of Bari, 70126 Bari, Italy; (R.A.C.); (S.J.R.)
| | - Muntaser E. Ibrahim
- Institute of Endemic Diseases, University of Khartoum, Khartoum 11111, Sudan;
| | | | - Stephan J. Reshkin
- Department of Biosciences, Biotechnologies, and Biopharmaceutics, University of Bari, 70126 Bari, Italy; (R.A.C.); (S.J.R.)
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14
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Chen KJ, Chen YL, Ueng SH, Hwang TL, Kuo LM, Hsieh PW. Neutrophil elastase inhibitor (MPH-966) improves intestinal mucosal damage and gut microbiota in a mouse model of 5-fluorouracil-induced intestinal mucositis. Biomed Pharmacother 2021; 134:111152. [PMID: 33373916 DOI: 10.1016/j.biopha.2020.111152] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/03/2020] [Accepted: 12/14/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND 5-Fluorouracil (5-FU)-based chemotherapy is first-line chemotherapy for colorectal cancer. However, 5-FU-induced intestinal mucositis (FUIIM) is a common adverse effect that severely impairs drug tolerance and results in poor patient health. METHODS Male C57BL/6 mice were given 5-FU (50 mg/kg/day, i.p.) and treated with MPH-966 (5 and 7.5 mg/kg/day, p.o.) for five days. The body weight loss and the amount of food intake, and histopathological findings were recorded and analyzed. In addition, the neutrophil infiltration, levels of neutrophil serine proteases and pro-inflammatory cytokines, and tight junction proteins expression in intestinal tissues were determined. The ecology of gut microbiota was performed through next-generation sequencing technologies. RESULTS Neutrophil elastase (NE) overexpression is a key feature in FUIIM. This study showed that treatment with the specific NE inhibitor MPH-966 (7.5 mg/kg/day, p.o.) significantly reversed 5-FU-induced loss in body weight and food intake; reversed villous atrophy; significantly suppressed myeloperoxidase, NE, and proteinase 3 activity; and reduced pro-inflammatory cytokine expression in an FUIIM mouse model. In addition, MPH-966 prevented 5-FU-induced intestinal barrier dysfunction, as indicated by the modulated expression of the tight junction proteins zonula occludin-1 and occludin. MPH-966 also reversed 5-FU-induced changes in gut microbiota diversity and abundances, specifically the Firmicutes-to-Bacteroidetes ratio; Muribaculaceae, Ruminococcaceae, and Eggerthellaceae abundances at the family level; and Candidatus Arthromitus abundance at the genus level. CONCLUSION These data indicate that NE inhibitor is a key treatment candidate to alleviate FUIIM by regulating abnormal inflammatory responses, intestinal barrier dysfunction, and gut microbiota imbalance.
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Affiliation(s)
- Kung-Ju Chen
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Li Chen
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shir-Hwa Ueng
- Department of Pathology, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou, Taiwan; Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Liang-Mou Kuo
- Department of General Surgery, Chang Gung Memorial Hospital, Chiayi, 613, Taiwan.
| | - Pei-Wen Hsieh
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Linkou, Taiwan; Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan.
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15
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McNulty MJ, Silberstein DZ, Kuhn BT, Padgett HS, Nandi S, McDonald KA, Cross CE. Alpha-1 antitrypsin deficiency and recombinant protein sources with focus on plant sources: Updates, challenges and perspectives. Free Radic Biol Med 2021; 163:10-30. [PMID: 33279618 DOI: 10.1016/j.freeradbiomed.2020.11.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 12/16/2022]
Abstract
Alpha-1 antitrypsin deficiency (A1ATD) is an autosomal recessive disease characterized by low plasma levels of A1AT, a serine protease inhibitor representing the most abundant circulating antiprotease normally present at plasma levels of 1-2 g/L. The dominant clinical manifestations include predispositions to early onset emphysema due to protease/antiprotease imbalance in distal lung parenchyma and liver disease largely due to unsecreted polymerized accumulations of misfolded mutant A1AT within the endoplasmic reticulum of hepatocytes. Since 1987, the only FDA licensed specific therapy for the emphysema component has been infusions of A1AT purified from pooled human plasma at the 2020 cost of up to US $200,000/year with the risk of intermittent shortages. In the past three decades various, potentially less expensive, recombinant forms of human A1AT have reached early stages of development, one of which is just reaching the stage of human clinical trials. The focus of this review is to update strategies for the treatment of the pulmonary component of A1ATD with some focus on perspectives for therapeutic production and regulatory approval of a recombinant product from plants. We review other competitive technologies for treating the lung disease manifestations of A1ATD, highlight strategies for the generation of data potentially helpful for securing FDA Investigational New Drug (IND) approval and present challenges in the selection of clinical trial strategies required for FDA licensing of a New Drug Approval (NDA) for this disease.
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Affiliation(s)
- Matthew J McNulty
- Department of Chemical Engineering, University of California, Davis, CA, USA
| | - David Z Silberstein
- Department of Chemical Engineering, University of California, Davis, CA, USA
| | - Brooks T Kuhn
- Department of Internal Medicine, University of California, Davis, CA, USA; University of California, Davis, Alpha-1 Deficiency Clinic, Sacramento, CA, USA
| | | | - Somen Nandi
- Department of Chemical Engineering, University of California, Davis, CA, USA; Global HealthShare Initiative®, University of California, Davis, CA, USA
| | - Karen A McDonald
- Department of Chemical Engineering, University of California, Davis, CA, USA; Global HealthShare Initiative®, University of California, Davis, CA, USA
| | - Carroll E Cross
- Department of Internal Medicine, University of California, Davis, CA, USA; University of California, Davis, Alpha-1 Deficiency Clinic, Sacramento, CA, USA; Department of Physiology and Membrane Biology, University of California, Davis, CA, USA.
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16
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Tran NT, Graf R, Wulf-Goldenberg A, Stecklum M, Strauß G, Kühn R, Kocks C, Rajewsky K, Chu VT. CRISPR-Cas9-Mediated ELANE Mutation Correction in Hematopoietic Stem and Progenitor Cells to Treat Severe Congenital Neutropenia. Mol Ther 2020; 28:2621-2634. [PMID: 32822592 PMCID: PMC7704744 DOI: 10.1016/j.ymthe.2020.08.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/09/2020] [Accepted: 08/05/2020] [Indexed: 01/08/2023] Open
Abstract
Severe congenital neutropenia (SCN) is a monogenic disorder. SCN patients are prone to recurrent life-threatening infections. The main causes of SCN are autosomal dominant mutations in the ELANE gene that lead to a block in neutrophil differentiation. In this study, we use CRISPR-Cas9 ribonucleoproteins and adeno-associated virus (AAV)6 as a donor template delivery system to repair the ELANEL172P mutation in SCN patient-derived hematopoietic stem and progenitor cells (HSPCs). We used a single guide RNA (sgRNA) specifically targeting the mutant allele, and an sgRNA targeting exon 4 of ELANE. Using the latter sgRNA, ∼34% of the known ELANE mutations can in principle be repaired. We achieved gene correction efficiencies of up to 40% (with sgELANE-ex4) and 56% (with sgELANE-L172P) in the SCN patient-derived HSPCs. Gene repair restored neutrophil differentiation in vitro and in vivo upon HSPC transplantation into humanized mice. Mature edited neutrophils expressed normal elastase levels and behaved normally in functional assays. Thus, we provide a proof of principle for using CRISPR-Cas9 to correct ELANE mutations in patient-derived HSPCs, which may translate into gene therapy for SCN.
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Affiliation(s)
- Ngoc Tung Tran
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Robin Graf
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | | | | | | | - Ralf Kühn
- iPS Cell Based Disease Modeling, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Christine Kocks
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany; Transgenics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
| | - Klaus Rajewsky
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany.
| | - Van Trung Chu
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany; iPS Cell Based Disease Modeling, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany.
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17
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Neutrophil elastase promotes macrophage cell adhesion and cytokine production through the integrin-Src kinases pathway. Sci Rep 2020; 10:15874. [PMID: 32981934 PMCID: PMC7522083 DOI: 10.1038/s41598-020-72667-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/26/2020] [Indexed: 01/08/2023] Open
Abstract
There are a number of respiratory diseases characterized by the presence of excess neutrophil elastase (NE) activity in tissues, including cystic fibrosis and chronic obstructive pulmonary disease (COPD). NE is considered a primary contributor to disease development, but the precise mechanism has yet to be fully determined. We hypothesized that NE alters the function of macrophages (Mɸ) which play a critical role in many physiological processes in healthy lungs. We demonstrate that monocyte-derived Mɸ exposed to NE releases active matrix metalloproteinases (MMPs), increase expression of pro-inflammatory cytokines TNFα, IL-1β, and IL-8, and reduce capacity to phagocytose bacteria. Changes in Mɸ function following NE treatment were accompanied by increased adhesion and cytoskeleton re-arrangement, indicating the possibility of integrin involvement. To support this observation, we demonstrate that NE induces phosphorylation of kinases from the Src kinase family, a hallmark of integrin signaling activation. Moreover, pretreatment of Mɸ with a specific Src kinase inhibitor, PP2 completely prevents NE-induced pro-inflammatory cytokine production. Taken together these findings indicate that NE participates in lung destruction not only through direct proteolytic degradation of matrix proteins, but also through activation of Mɸ inflammatory and proteolytic functions.
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18
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Vidhya R, Anuradha CV. Anti-inflammatory effects of troxerutin are mediated through elastase inhibition. Immunopharmacol Immunotoxicol 2020; 42:423-435. [PMID: 32762381 DOI: 10.1080/08923973.2020.1806870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
CONTEXT Obesity is a chronic low-grade inflammatory state associated with immune cell infiltration into the adipose tissue (AT). We hypothesize that the anti-obesity and anti-inflammatory effects of troxerutin (TX) are mediated through inhibition of elastase. OBJECTIVE To determine the inhibitory effect of TX on elastase in vitro and in tumor necrosis factor alpha (TNFα) induced 3T3-L1 adipocytes and the molecular interaction of TX with human neutrophil elastase (HNE). MATERIALS AND METHODS Differentiated 3T3-L1 adipocytes were pretreated with TX, elastatinal (ELAS) or sodium salicylate (SAL) before exposure to TNFα. Lipid accumulation, reactive oxygen species (ROS) generation and oxidant-antioxidant balance were examined. The mRNA and protein expression of TNFα, interleukin-6, monocyte chemoattractant protein-1, adiponectin, leptin, resistin, chemerin, and elastase were analyzed. Elastase inhibition by TX and ELAS in a cell free system and docking studies for HNE with TX and ELAS were performed. RESULTS TX, ELAS or SAL pretreatment had lowered lipid droplets formation and TG content. TX suppressed ROS generation, oxidative stress and improved antioxidant status. The expression of inflammatory cytokines and elastase was downregulated while that of adiponectin was upregulated by TX. The concentration required to produce 50% inhibition in vitro (IC50) was 11.5 μM for TX and 16.9 μM for ELAS. TX showed hydrogen bonding and hydrophobic interactions with elastase. DISCUSSION TNFα induces inflammation of 3T3-L1 cells through elastase activation. TX inhibits elastase activity, downregulates expression and binds with elastase. CONCLUSION The antioxidant and anti-inflammatory activities of TX in AT could be of relevance in the management of obesity.
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Affiliation(s)
- Ramachandran Vidhya
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu, India
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19
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McElvaney OF, Murphy MP, Reeves EP, McElvaney NG. Anti-cytokines as a Strategy in Alpha-1 Antitrypsin Deficiency. CHRONIC OBSTRUCTIVE PULMONARY DISEASES-JOURNAL OF THE COPD FOUNDATION 2020; 7:203-213. [PMID: 32503090 DOI: 10.15326/jcopdf.7.3.2019.0171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
For many years, the lung disease associated with alpha-1 antitrypsin (AAT) deficiency (AATD) was perceived as being secondary to an imbalance between this serine protease inhibitor and the target protease, neutrophil elastase (NE). More recently, a greater understanding of the pathways leading to lung inflammation has shed light on new potential attributes and presented AATD as an inflammatory condition in which proteases and neutrophils still play a major role, but in which pro-inflammatory cytokines, either induced by the actions of NE or by other pro-inflammatory processes normally modulated by AAT, are involved. In this review, we will look at the various cytokines centrally involved in AATD lung disease, and how a greater understanding of their contribution may help development of targeted therapies.
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Affiliation(s)
- Oisín F McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Mark P Murphy
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Emer P Reeves
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Noel G McElvaney
- Irish Centre for Genetic Lung Disease, Department of Medicine, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
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20
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Iacomino G, Rotondi Aufiero V, Iannaccone N, Melina R, Giardullo N, De Chiara G, Venezia A, Taccone FS, Iaquinto G, Mazzarella G. IBD: Role of intestinal compartments in the mucosal immune response. Immunobiology 2020; 225:151849. [PMID: 31563276 DOI: 10.1016/j.imbio.2019.09.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/30/2019] [Accepted: 09/03/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIMS Laser capture microdissection (LCM) is a powerful tool for the isolation of specific tissue compartments. We aimed to investigate the mucosal immune response that takes place in different intestinal compartments of IBD patients, dissected by LCM, analyzing cytokines expression profile and endoplasmic reticulum (ER) stress markers. METHODS Frozen sections of gut were obtained from patients with Crohn's disease (CD), ulcerative colitis (UC) and from controls. Using LCM, surface epithelium (SE) and lamina propria (LP) compartments were isolated and total RNA extracted. The relative expression of Th1, Th17 and Treg cytokines was evaluated by quantitative reverse transcriptase real-time PCR (qRT-PCR), in addition to the assessment of mRNA splicing of the transcription factor X-box binding protein-1 (XBP1). Human neutrophil elastase (HNE) and the transcription factor forkhead box P3 (Foxp3) were also analyzed by immunohistochemistry. RESULTS The increased expression of IL-17 was observed in both intestinal compartments of IBD patients when compared to controls. IFN- γ, TNF-α , IL-10, HNE and Foxp3 were overexpressed in the LP compartment of both IBD patients as compared to controls. An upregulation of IFN-γ and an infiltration of HNE+ cells was found in the SE of patients with UC. Splicing of XBP1 mRNA was recognized in both intestinal compartments of IBD patients when compared to controls. CONCLUSIONS In IBD patients, both intestinal compartments are involved in Th17 response, whereas, LP compartment plays a prominent role in Th1 and Treg immune responses. Nevertheless, high level of IFN- γ was found in the SE of UC patients, suggesting that this compartment is involved in the Th1 immune response. Our data also suggested that ER stress signalling is active in both LP and SE compartment of IBD patients, thus advocating that ER stress and immunity are intertwined.
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Affiliation(s)
| | | | | | - Raffaele Melina
- Department of Gastroenterology, San G. Moscati Hospital, Avellino, Italy
| | - Nicola Giardullo
- Department of Gastroenterology, San G. Moscati Hospital, Avellino, Italy
| | - Giovanni De Chiara
- Department of AnatomicPathology, San G. Moscati Hospital, Avellino, Italy
| | | | - Fabio Silvio Taccone
- Department of Intensive Care, Erasme Hospital, Universit e Libre de Bruxelles, Brussels, Belgium
| | - Gaetano Iaquinto
- Division of Gastroenterology, Santa Rita Hospital, Atripalda, Av, Italy
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21
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Birch GP, Campbell T, Bradley M, Dhaliwal K. Optical Molecular Imaging of Inflammatory Cells in Interventional Medicine-An Emerging Strategy. Front Oncol 2019; 9:882. [PMID: 31572676 PMCID: PMC6751259 DOI: 10.3389/fonc.2019.00882] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022] Open
Abstract
The optical molecular imaging of inflammation is an emerging strategy for interventional medicine and diagnostics. The host's inflammatory response and adaptation to acute and chronic diseases provides unique signatures that have the potential to guide interventions. Thus, there are emerging a suite of molecular imaging and sensing approaches for a variety of targets in this area. This review will focus on two key cellular orchestrators that dominate this area, neutrophils and macrophages, with recent developments in molecular probes and approaches discussed.
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Affiliation(s)
- Gavin P Birch
- EaStChem School of Chemistry, University of Edinburgh, Edinburgh, United Kingdom.,Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Thane Campbell
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Mark Bradley
- EaStChem School of Chemistry, University of Edinburgh, Edinburgh, United Kingdom
| | - Kevin Dhaliwal
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
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22
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Jones-Nelson O, Hilliard JJ, DiGiandomenico A, Warrener P, Alfaro A, Cheng L, Stover CK, Cohen TS, Sellman BR. The Neutrophilic Response to Pseudomonas Damages the Airway Barrier, Promoting Infection by Klebsiella pneumoniae. Am J Respir Cell Mol Biol 2019; 59:745-756. [PMID: 30109945 DOI: 10.1165/rcmb.2018-0107oc] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Pseudomonas aeruginosa and Klebsiella pneumoniae are two common gram-negative pathogens that are associated with bacterial pneumonia and can often be isolated from the same patient. We used a mixed-pathogen pneumonia infection model in which mice were infected with sublethal concentrations of P. aeruginosa and K. pneumoniae, resulting in significant lethality, outgrowth of both bacteria in the lung, and systemic dissemination of K. pneumoniae. Inflammation, induced by P. aeruginosa activation of Toll-like receptor 5, results in prolonged neutrophil recruitment to the lung and increased levels of neutrophil elastase in the airway, resulting in lung damage and epithelial barrier dysfunction. Live P. aeruginosa was not required to potentiate K. pneumoniae infection, and flagellin alone was sufficient to induce lethality when delivered along with Klebsiella. Prophylaxis with an anti-Toll-like receptor 5 antibody or Sivelestat, a neutrophil elastase inhibitor, reduced neutrophil influx, inflammation, and mortality. Furthermore, pathogen-specific monoclonal antibodies targeting P. aeruginosa or K. pneumoniae prevented the outgrowth of both bacteria and reduced host inflammation and lethality. These findings suggest that coinfection with P. aeruginosa may enable the outgrowth and dissemination of K. pneumoniae, and that a pathogen- or host-specific prophylactic approach targeting P. aeruginosa may prevent or limit the severity of such infections by reducing neutrophil-induced lung damage.
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Affiliation(s)
| | | | | | | | - Alex Alfaro
- 2 Department of Laboratory Animal Research, and
| | - Lily Cheng
- 3 Department of Translational Science, MedImmune, LLC, Gaithersburg, Maryland
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23
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Hiroyasu S, Turner CT, Richardson KC, Granville DJ. Proteases in Pemphigoid Diseases. Front Immunol 2019; 10:1454. [PMID: 31297118 PMCID: PMC6607946 DOI: 10.3389/fimmu.2019.01454] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 06/10/2019] [Indexed: 12/28/2022] Open
Abstract
Pemphigoid diseases are a subgroup of autoimmune skin diseases characterized by widespread tense blisters. Standard of care typically involves immunosuppressive treatments, which may be insufficient and are often associated with significant adverse events. As such, a deeper understanding of the pathomechanism(s) of pemphigoid diseases is necessary in order to identify improved therapeutic approaches. A major initiator of pemphigoid diseases is the accumulation of autoantibodies against proteins at the dermal-epidermal junction (DEJ), followed by protease activation at the lesion. The contribution of proteases to pemphigoid disease pathogenesis has been investigated using a combination of in vitro and in vivo models. These studies suggest proteolytic degradation of anchoring proteins proximal to the DEJ is crucial for dermal-epidermal separation and blister formation. In addition, proteases can also augment inflammation, expose autoantigenic cryptic epitopes, and/or provoke autoantigen spreading, which are all important in pemphigoid disease pathology. The present review summarizes and critically evaluates the current understanding with respect to the role of proteases in pemphigoid diseases.
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Affiliation(s)
- Sho Hiroyasu
- International Collaboration On Repair Discoveries (ICORD), Vancouver Coastal Health Research Institute (VCHRI), Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
- BC Professional Firefighters' Burn and Wound Healing Group, Vancouver Coastal Health Research Institute (VCHRI), University of British Columbia (UBC), Vancouver, BC, Canada
| | - Christopher T. Turner
- International Collaboration On Repair Discoveries (ICORD), Vancouver Coastal Health Research Institute (VCHRI), Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
- BC Professional Firefighters' Burn and Wound Healing Group, Vancouver Coastal Health Research Institute (VCHRI), University of British Columbia (UBC), Vancouver, BC, Canada
| | - Katlyn C. Richardson
- International Collaboration On Repair Discoveries (ICORD), Vancouver Coastal Health Research Institute (VCHRI), Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
- BC Professional Firefighters' Burn and Wound Healing Group, Vancouver Coastal Health Research Institute (VCHRI), University of British Columbia (UBC), Vancouver, BC, Canada
| | - David J. Granville
- International Collaboration On Repair Discoveries (ICORD), Vancouver Coastal Health Research Institute (VCHRI), Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia (UBC), Vancouver, BC, Canada
- BC Professional Firefighters' Burn and Wound Healing Group, Vancouver Coastal Health Research Institute (VCHRI), University of British Columbia (UBC), Vancouver, BC, Canada
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24
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Voisin MB, Leoni G, Woodfin A, Loumagne L, Patel NS, Di Paola R, Cuzzocrea S, Thiemermann C, Perretti M, Nourshargh S. Neutrophil elastase plays a non-redundant role in remodeling the venular basement membrane and neutrophil diapedesis post-ischemia/reperfusion injury. J Pathol 2019; 248:88-102. [PMID: 30632166 PMCID: PMC6850085 DOI: 10.1002/path.5234] [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: 06/11/2018] [Revised: 11/09/2018] [Accepted: 12/23/2018] [Indexed: 12/20/2022]
Abstract
Ischemia/reperfusion (I/R) injury is a severe inflammatory insult associated with numerous pathologies, such as myocardial infarction, stroke and acute kidney injury. I/R injury is characterized by a rapid influx of activated neutrophils secreting toxic free radical species and degrading enzymes that can irreversibly damage the tissue, thus impairing organ functions. Significant efforts have been invested in identifying therapeutic targets to suppress neutrophil recruitment and activation post‐I/R injury. In this context, pharmacological targeting of neutrophil elastase (NE) has shown promising anti‐inflammatory efficacy in a number of experimental and clinical settings of I/R injury and is considered a plausible clinical strategy for organ care. However, the mechanisms of action of NE, and hence its inhibitors, in this process are not fully understood. Here we conducted a comprehensive analysis of the impact of NE genetic deletion on neutrophil infiltration in four murine models of I/R injury as induced in the heart, kidneys, intestine and cremaster muscle. In all models, neutrophil migration into ischemic regions was significantly suppressed in NE−/− mice as compared with wild‐type controls. Analysis of inflamed cremaster muscle and mesenteric microvessels by intravital and confocal microscopy revealed a selective entrapment of neutrophils within venular walls, most notably at the level of the venular basement membrane (BM) following NE deletion/pharmacological blockade. This effect was associated with the suppression of NE‐mediated remodeling of the low matrix protein expressing regions within the venular BM used by transmigrating neutrophils as exit portals. Furthermore, whilst NE deficiency led to reduced neutrophil activation and vascular leakage, levels of monocytes and prohealing M2 macrophages were reduced in tissues of NE−/− mice subjected to I/R. Collectively our results identify a vital and non‐redundant role for NE in supporting neutrophil breaching of the venular BM post‐I/R injury but also suggest a protective role for NE in promoting tissue repair. © 2019 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Mathieu-Benoit Voisin
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Giovanna Leoni
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilian University (LMU), Munich, Germany
| | - Abigail Woodfin
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Laure Loumagne
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Nimesh Sa Patel
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Rosanna Di Paola
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Christoph Thiemermann
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Mauro Perretti
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Sussan Nourshargh
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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25
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Haritha VH, Seena P, Shaji BV, Nithin TU, Hazeena VN, Anie Y. Monocyte clearance of apoptotic neutrophils is unhindered in the presence of NETosis, but proteins of NET trigger ETosis in monocytes. Immunol Lett 2019; 207:36-45. [PMID: 30738096 DOI: 10.1016/j.imlet.2019.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 02/02/2019] [Accepted: 02/05/2019] [Indexed: 12/18/2022]
Abstract
Resolution of inflammation needs effective and timely removal of dead cells and other toxic products of neutrophils, monocytes, and macrophages. In this study, we evaluated the role of monocytes in the clearance of neutrophil extracellular trap (NET) and apoptotic neutrophils in the inflammation site. For this, monocytes were observed microscopically after exposing them with NETs and/or apoptotic bodies. A subset of monocytes exposed to NETs ejected extracellular traps and this was shown to be mediated by proteins like elastase and citrullinated histones present in NET supernatant. Monocytes showed a preference for the internalisation of the apoptotic body when both NET and apoptotic bodies were present in the medium. The study provides new insight into the role of monocytes in the clearance of NET and apoptotic neutrophils and this information may open up a way in formulating therapeutic strategies for accelerating resolution of inflammation.
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Affiliation(s)
- V H Haritha
- School of Biosciences, Mahatma Gandhi University, Kottayam, 686560 Kerala, India.
| | - P Seena
- School of Biosciences, Mahatma Gandhi University, Kottayam, 686560 Kerala, India.
| | - Binchu V Shaji
- School of Biosciences, Mahatma Gandhi University, Kottayam, 686560 Kerala, India.
| | - T U Nithin
- School of Biosciences, Mahatma Gandhi University, Kottayam, 686560 Kerala, India.
| | - V N Hazeena
- School of Biosciences, Mahatma Gandhi University, Kottayam, 686560 Kerala, India.
| | - Y Anie
- School of Biosciences, Mahatma Gandhi University, Kottayam, 686560 Kerala, India.
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26
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Luo X, Zhu W, Ding L, Ye X, Gao H, Tai X, Wu Z, Qian Y, Ruan X, Li J, Li S, Chen Z. Bldesin, the first functionally characterized pathogenic fungus defensin with Kv1.3 channel and chymotrypsin inhibitory activities. J Biochem Mol Toxicol 2018; 33:e22244. [PMID: 30381903 DOI: 10.1002/jbt.22244] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/10/2018] [Accepted: 09/07/2018] [Indexed: 12/31/2022]
Abstract
Fungus defensin is a kind of important natural peptide resource, such as plectasin from the soil fungus Pseudoplectania nigrella with potential application in the antimicrobial peptide lead drug discovery. Here, a fungus defensin named Bldesin with Kv1.3 channel and serine protease inhibitory activities was first explored. By GST-Bldesin fusion expression and enterokinase cleaving strategy, recombinant Bldesin was obtained successfully. Antimicrobial assays showed that Bldesin had potent activity against Gram-positive Staphylococcus aureus, but had no effect on Gram-negative Escherichia coli. Electrophysiological experiments showed that Bldesin had Kv1.3 channel inhibitory activity. Serine protease inhibitory associated experiments showed that Bldesin had unique chymotrypsin protease inhibitory, elastase protease inhibitory, and serine protease-associated coagulation inhibitory activities. To the best of our knowledge, Bldesin is the first functionally characterized pathogenic fungus defensin with Kv1.3 channel and chymotrypsin inhibitory activities and highlighted novel pharmacological effects of fungus-derived defensin peptides.
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Affiliation(s)
- Xudong Luo
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Wen Zhu
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Li Ding
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China.,Department of Clinical Laboratory, Dongfeng hospital, Hubei University of Medicine, Hubei, China
| | - Xiangdong Ye
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Huanhuan Gao
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Xuejiao Tai
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Zheng Wu
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Yi Qian
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Xuzhi Ruan
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Jian Li
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Shan Li
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
| | - Zongyun Chen
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, College of Basic Medicine, Hubei University of Medicine, Hubei, China
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27
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Attia Z, Rowe JC, Kim E, Varikuti S, Steiner HE, Zaghawa A, Hassan H, Cormet-Boyaka E, Satoskar AR, Boyaka PN. Inhibitors of elastase stimulate murine B lymphocyte differentiation into IgG- and IgA-producing cells. Eur J Immunol 2018; 48:1295-1301. [PMID: 29710424 DOI: 10.1002/eji.201747264] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 03/17/2018] [Accepted: 04/25/2018] [Indexed: 01/11/2023]
Abstract
It is well established that dendritic cells and macrophages play a role in antigen presentation to B and T cells and in shaping B and T cell responses via cytokines they produce. We have previously reported that depletion of neutrophils improves the production of mucosal IgA after sublingual immunization with Bacillus anthracis edema toxin as adjuvant. These past studies also demonstrated that an inverse correlation exists between the number of neutrophils and production of IgA by B cells. Using specific inhibitors of elastase, we addressed whether the elastase activity of neutrophil could be the factor that interferes with production of IgA and possibly other immunoglobulin isotypes. We found that murine splenocytes and mesenteric lymph node cells cultured for 5 days in the presence of neutrophil elastase inhibitors secreted higher levels of IgG and IgA than cells cultured in the absence of inhibitors. The effect of the inhibitors was dose-dependent and was consistent with increased frequency of CD138+ cells expressing IgG or IgA. Finally, neutrophil elastase inhibitors increased transcription of mRNA for AID, IL-10, BAFF and APRIL, factors involved in B cell differentiation. These findings identify inhibitors of elastase as potential adjuvants for increasing production of antibodies.
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Affiliation(s)
- Zayed Attia
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA.,Department of Medicine and Infectious Diseases, University of Sadat City, Sadat City, Egypt
| | - John C Rowe
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
| | - Eunsoo Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
| | - Sanjay Varikuti
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Haley E Steiner
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
| | - Ahmad Zaghawa
- Department of Medicine and Infectious Diseases, University of Sadat City, Sadat City, Egypt
| | - Hany Hassan
- Department of Medicine and Infectious Diseases, University of Sadat City, Sadat City, Egypt
| | | | - Abhay R Satoskar
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Prosper N Boyaka
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
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Domon H, Nagai K, Maekawa T, Oda M, Yonezawa D, Takeda W, Hiyoshi T, Tamura H, Yamaguchi M, Kawabata S, Terao Y. Neutrophil Elastase Subverts the Immune Response by Cleaving Toll-Like Receptors and Cytokines in Pneumococcal Pneumonia. Front Immunol 2018; 9:732. [PMID: 29922273 PMCID: PMC5996908 DOI: 10.3389/fimmu.2018.00732] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 03/23/2018] [Indexed: 01/08/2023] Open
Abstract
Excessive activation of neutrophils results in the release of neutrophil elastase (NE), which leads to lung injury in severe pneumonia. Previously, we demonstrated a novel immune subversion mechanism involving microbial exploitation of this NE ability, which eventually promotes disruption of the pulmonary epithelial barrier. In the present study, we investigated the effect of NE on host innate immune response. THP-1-derived macrophages were stimulated with heat-killed Streptococcus pneumoniae or lipopolysaccharide in the presence or absence of NE followed by analysis of toll-like receptor (TLR) and cytokine expression. Additionally, the biological significance of NE was confirmed in an in vivo mouse intratracheal infection model. NE downregulated the gene transcription of multiple cytokines in THP-1-derived macrophages through the cleavage of TLRs and myeloid differentiation factor 2. Additionally, NE cleaved inflammatory cytokines and chemokines. In a mouse model of intratracheal pneumococcal challenge, administration of an NE inhibitor significantly increased proinflammatory cytokine levels in bronchoalveolar lavage fluid, enhanced bacterial clearance, and improved survival rates. Our work indicates that NE subverts the innate immune response and that inhibition of this enzyme may constitute a novel therapeutic option for the treatment of pneumococcal pneumonia.
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Affiliation(s)
- Hisanori Domon
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kosuke Nagai
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tomoki Maekawa
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masataka Oda
- Department of Microbiology and Infection Control Sciences, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Daisuke Yonezawa
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Wataru Takeda
- Faculty of Dentistry, Niigata University, Niigata, Japan
| | - Takumi Hiyoshi
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hikaru Tamura
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaya Yamaguchi
- Department of Oral and Molecular Microbiology, Osaka University, Graduate School of Dentistry, Osaka, Japan
| | - Shigetada Kawabata
- Department of Oral and Molecular Microbiology, Osaka University, Graduate School of Dentistry, Osaka, Japan
| | - Yutaka Terao
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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29
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Extended cleavage specificity of human neutrophil cathepsin G: A low activity protease with dual chymase and tryptase-type specificities. PLoS One 2018; 13:e0195077. [PMID: 29652924 PMCID: PMC5898719 DOI: 10.1371/journal.pone.0195077] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 02/22/2018] [Indexed: 01/08/2023] Open
Abstract
Human neutrophils express at least four active serine proteases, cathepsin G, N-elastase, proteinase 3 and neutrophil serine protease 4 (NSP4). They have all been extensively studied due to their importance in neutrophil biology and immunity. However, their extended cleavage specificities have never been determined in detail. Here we present a detailed cleavage specificity analysis of human cathepsin G (hCG). The specificity was determined by phage display analysis and the importance of individual amino acids in and around the cleavage site was then validated using novel recombinant substrates. To provide a broader context to this serine protease, a comparison was made to the related mast cell protease, human chymase (HC). hCG showed similar characteristics to HC including both the primary and extended specificities. As expected, Phe, Tyr, Trp and Leu were preferred in the P1 position. In addition, both proteases showed a preference for negatively charged amino acids in the P2´ position of substrates and a preference for aliphatic amino acids both upstream and downstream of the cleavage site. However, overall the catalytic activity of hCG was ~10-fold lower than HC. hCG has previously been reported to have a dual specificity consisting of chymase and tryptase-type activities. In our analysis, tryptase activity against substrates with Lys in P1 cleavage position was indeed only 2-fold less efficient as compared to optimal chymase substrates supporting strong dual-type specificity. We hope the information presented here on extended cleavage specificities of hCG and HC will assist in the search for novel in vivo substrates for these proteases as well as aid in the efforts to better understand the role of hCG in immunity and bacterial defence.
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Griffiths JS, Thompson A, Stott M, Benny A, Lewis NA, Taylor PR, Forton J, Herrick S, Orr SJ, McGreal EP. Differential susceptibility of Dectin-1 isoforms to functional inactivation by neutrophil and fungal proteases. FASEB J 2018; 32:3385-3397. [PMID: 29401615 PMCID: PMC5956239 DOI: 10.1096/fj.201701145r] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Patients with cystic fibrosis (CF) experience chronic or recurrent bacterial and fungal lung infections. Many patients with CF cannot effectively clear Aspergillus from their lungs. This may result in IgE sensitization and the development of allergic bronchopulmonary aspergillosis, or invasive infections, such as Aspergillus bronchitis. Lung disease in patients with CF is associated with neutrophil-dominated inflammation and elevated levels of the serine protease, neutrophil elastase (NE). Various C-type lectin-like receptors (CLRs), including Dectin-1 and Dectin-2, are involved in the immune response to Aspergillus. Here, we show that purified NE cleaves Dectin-1 in an isoform-specific manner. Bronchoalveolar lavage fluid from patients with CF, which contains high NE activity, induces Dectin-1 cleavage. Similarly, filtrate from a protease-producing strain of Aspergillus fumigatus induces isoform-specific cleavage of Dectin-1. Dectin-1 knockout (KO) cells and NE-treated cells demonstrated reduced phagocytosis of zymosan, a fungal cell wall preparation. In addition, NE cleaves 2 other CLRs, Dectin-2 and Mincle, and fungal-induced cytokine production was reduced in Dectin-1 KO cells, Dectin-2 KO cells, and NE-treated cells. Thus, Dectin-1 and Dectin-2 cleavage by NE and/or A. fumigatus–derived proteases results in an aberrant antifungal immune response that likely contributes to disease pathology in patients with CF.—Griffiths, J. S., Thompson, A., Stott, M., Benny, A., Lewis, N. A., Taylor, P. R., Forton, J., Herrick, S., Orr, S. J., McGreal, E. P. Differential susceptibility of Dectin-1 isoforms to functional inactivation by neutrophil and fungal proteases.
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Affiliation(s)
- James S Griffiths
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Aiysha Thompson
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Matthew Stott
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Ankita Benny
- School of Medicine, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Natalie A Lewis
- School of Medicine, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Philip R Taylor
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Julian Forton
- Children's Hospital for Wales, Cardiff, United Kingdom
| | - Sarah Herrick
- School of Biological Sciences, Faculty of Biology Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Selinda J Orr
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Eamon P McGreal
- Centre for Medical Education, Cardiff University School of Medicine, Cardiff, United Kingdom
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31
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Pacheco Y, Ponchon M, Lebecque S, Calender A, Bernaudin JF, Valeyre D, Iglarz M, Strasser DS, Studer R, Freti D, Renno T, Bentaher A. Granulomatous lung inflammation is nanoparticle type-dependent. Exp Lung Res 2018; 44:25-39. [PMID: 29324063 DOI: 10.1080/01902148.2017.1412541] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Nanoparticles are increasingly suspected as a strong etiologic factor of granuloma formation. AIM OF THE STUDY The aim of our study was to compare lung inflammatory response and histology changes following exposure of mice to two widely used nanoparticles: carbon nanotubes (MWCNT) and cadmium-based nanoparticles (QDOT705) in an attempt to better our understanding of granulomatous inflammation. MATERIALS AND METHODS Various groups of mice were included: control mice and mice that were intranasally instilled with QDOT or MWCNT. At defined time points post-challenge, bronchoalveolar lavages (BALs) and lung tissues were collected to study inflammatory and histologic changes. RESULTS Analyses of lung BAL fluids and tissues of nanoparticles-challenged mice in comparison to controls found: (1) increased cellularity in BALs, (2) increase of total protein concentration, LDH activity and proteolytic activity in BALs; (3) patchy granulomas, (4) macrophages, CD3 ± T, Treg and B cell infiltration in granulomatous areas; and (5) altered regulation of key inflammatory mediators and receptors. Importantly, these changes were nanoparticle type-dependent. CONCLUSION Our work enhances understanding of nanoparticles-induced lung inflammatory and histological changes that result in granuloma formation. We provide compelling evidence that not only exposure to nanoparticles leads to granulomatous lung inflammation, but the severity of this latter is nanostructure type-dependent. Of importance, while nanotechnology has the potential to revolutionize various fields including medicine, nanoparticles form the potential for an entirely new lung health risk that it is necessary to take seriously into consideration by setting up and/or reinforcing adequate safety measures.
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Affiliation(s)
- Yves Pacheco
- a Inflammation and Immunity of the Respiratory Epithelium 1 - EA7426, Faculté de médecine Lyon Sud , UCBL1, Pierre Benite , France.,b Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon2 , Pierre Benite , France
| | - Marine Ponchon
- a Inflammation and Immunity of the Respiratory Epithelium 1 - EA7426, Faculté de médecine Lyon Sud , UCBL1, Pierre Benite , France
| | - Serge Lebecque
- b Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon2 , Pierre Benite , France.,c Centre de Recherche en Cancérologie de Lyon (CRCL) - U INSERM 10523 , Lyon , France
| | - Alain Calender
- a Inflammation and Immunity of the Respiratory Epithelium 1 - EA7426, Faculté de médecine Lyon Sud , UCBL1, Pierre Benite , France.,b Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon2 , Pierre Benite , France
| | | | | | - Marc Iglarz
- e Actelion Pharmaceuticals Ltd5. , CH-4123 Allschwil , Switzerland
| | | | - Rolf Studer
- e Actelion Pharmaceuticals Ltd5. , CH-4123 Allschwil , Switzerland
| | - Diego Freti
- e Actelion Pharmaceuticals Ltd5. , CH-4123 Allschwil , Switzerland
| | - Toufiq Renno
- c Centre de Recherche en Cancérologie de Lyon (CRCL) - U INSERM 10523 , Lyon , France
| | - Abederrazzaq Bentaher
- a Inflammation and Immunity of the Respiratory Epithelium 1 - EA7426, Faculté de médecine Lyon Sud , UCBL1, Pierre Benite , France
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Polysaccharides from Kochia scoparia fruits protect mice from lipopolysaccharide-mediated acute lung injury by inhibiting neutrophil elastase. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.09.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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33
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An anti-Propionibacterium acnes antibody shows heterologous resistance to an Actinobacillus pleuropneumoniae infection independent of neutrophils in mice. Immunol Res 2017; 65:1124-1129. [PMID: 28929313 DOI: 10.1007/s12026-017-8954-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Porcine contagious pleuropneumonia is a highly fatal respiratory disease that is caused by Actinobacillus pleuropneumoniae (APP) and results in tremendous economic losses for the pig breeding industry worldwide. Previous studies have demonstrated that Propionibacterium acnes (PA) could effectively prevent APP infection in mice and pigs. The humoral immune response played a primary role during this process and anti-PA antibody could mediate macrophages to kill the bacteria. However, the role of neutrophils in this process is currently unknown. In this study, mice were injected with cyclophosphamide to deplete neutrophils and then passively immunized with anti-PA serum or negative serum. Mice were subsequently challenged with APP serotype 1. The results showed that the mice exhibited less bacterial colonization, less lung damage, and a high survival rate, which were immunized with the anti-PA antibody whether neutrophils were depleted or not. Worse still, the presence of neutrophils increased the damage to the mice after challenge. These results suggest that the activity of the anti-PA antibody against APP infection was independent of neutrophils. These findings have important significance for understanding the mechanisms of humoral immunity conferred by heterologous immunization and lay a good foundation for preventing APP infection.
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34
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Muley MM, Krustev E, Reid AR, McDougall JJ. Prophylactic inhibition of neutrophil elastase prevents the development of chronic neuropathic pain in osteoarthritic mice. J Neuroinflammation 2017; 14:168. [PMID: 28835277 PMCID: PMC5569523 DOI: 10.1186/s12974-017-0944-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 08/16/2017] [Indexed: 12/15/2022] Open
Abstract
Background A subset of osteoarthritis (OA) patients experience joint pain with neuropathic characteristics. Mediators such as neutrophil elastase, a serine proteinase, may be released during acute OA inflammatory flares. We have previously shown that local administration of neutrophil elastase causes joint inflammation and pain via activation of proteinase-activated receptor-2 (PAR2). The aim of this study was to examine the contribution of endogenous neutrophil elastase and PAR2 to the development of joint inflammation, pain, and neuropathy associated with monoiodoacetate (MIA)-induced experimental OA. Methods MIA (0.3 mg/10 μl) was injected into the right knee joint of male C57BL/6 mice (20–34 g). Joint inflammation (edema, leukocyte kinetics), neutrophil elastase proteolytic activity, tactile allodynia, and saphenous nerve demyelination were assessed over 14 days post-injection. The effects of inhibiting neutrophil elastase during the early inflammatory phase of MIA (days 0 to 3) were determined using sivelestat (50 mg/kg i.p.) and serpinA1 (10 μg i.p.). Involvement of PAR2 in the development of MIA-induced joint inflammation and pain was studied using the PAR2 antagonist GB83 (5 μg i.p. days 0 to 1) and PAR2 knockout animals. Results MIA caused an increase in neutrophil elastase proteolytic activity on day 1 (P < 0.0001), but not on day 14. MIA also generated a transient inflammatory response which peaked on day 1 (P < 0.01) then subsided over the 2-week time course. Joint pain appeared on day 1 and persisted to day 14 (P < 0.0001). By day 14, the saphenous nerve showed signs of demyelination. Early treatment with sivelestat and serpinA1 blocked the proteolytic activity of neutrophil elastase on day 1 (P < 0.001), and caused lasting improvements in joint inflammation, pain, and saphenous nerve damage (P < 0.05). MIA-induced synovitis was reversed by early treatment with GB83 and attenuated in PAR2 knockout mice (P < 0.05). PAR2 knockout mice also showed reduced MIA-induced joint pain (P < 0.0001) and less nerve demyelination (P = 0.81 compared to saline control). Conclusions Neutrophil elastase and PAR2 contribute significantly to the development of joint inflammation, pain, and peripheral neuropathy associated with experimental OA, suggesting their potential as therapeutic targets.
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Affiliation(s)
- Milind M Muley
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, 5850 College Street, PO Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Eugene Krustev
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, 5850 College Street, PO Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Allison R Reid
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, 5850 College Street, PO Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Jason J McDougall
- Departments of Pharmacology and Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, 5850 College Street, PO Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.
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Kotnala S, Baghel S, Verma D, Tyagi A, Muyal JP. Recombinant human keratinocyte growth factor attenuates apoptosis in elastase induced emphysematous mice lungs. Inhal Toxicol 2017; 29:23-31. [DOI: 10.1080/08958378.2016.1272653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sudhir Kotnala
- School of Biotechnology, Gautam Buddha University, Greater Noida, India
| | - Sumit Baghel
- School of Biotechnology, Gautam Buddha University, Greater Noida, India
| | - Deepali Verma
- School of Biotechnology, Gautam Buddha University, Greater Noida, India
| | - Amit Tyagi
- Nuclear Medicine Department, Institute of Nuclear Medicine & Allied sciences, Defence Research Development Organization, New Delhi, India
| | - Jai Prakash Muyal
- School of Biotechnology, Gautam Buddha University, Greater Noida, India
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Marshall NC, Finlay BB, Overall CM. Sharpening Host Defenses during Infection: Proteases Cut to the Chase. Mol Cell Proteomics 2017; 16:S161-S171. [PMID: 28179412 PMCID: PMC5393396 DOI: 10.1074/mcp.o116.066456] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/03/2017] [Indexed: 01/14/2023] Open
Abstract
The human immune system consists of an intricate network of tightly controlled pathways, where proteases are essential instigators and executioners at multiple levels. Invading microbial pathogens also encode proteases that have evolved to manipulate and dysregulate host proteins, including host proteases during the course of disease. The identification of pathogen proteases as well as their substrates and mechanisms of action have empowered significant developments in therapeutics for infectious diseases. Yet for many pathogens, there remains a great deal to be discovered. Recently, proteomic techniques have been developed that can identify proteolytically processed proteins across the proteome. These “degradomics” approaches can identify human substrates of microbial proteases during infection in vivo and expose the molecular-level changes that occur in the human proteome during infection as an operational network to develop hypotheses for further research as well as new therapeutics. This Perspective Article reviews how proteases are utilized during infection by both the human host and invading bacterial pathogens, including archetypal virulence-associated microbial proteases, such as the Clostridia spp. botulinum and tetanus neurotoxins. We highlight the potential knowledge that degradomics studies of host–pathogen interactions would uncover, as well as how degradomics has been successfully applied in similar contexts, including use with a viral protease. We review how microbial proteases have been targeted in current therapeutic approaches and how microbial proteases have shaped and even contributed to human therapeutics beyond infectious disease. Finally, we discuss how, moving forward, degradomics research can greatly contribute to our understanding of how microbial pathogens cause disease in vivo and lead to the identification of novel substrates in vivo, and the development of improved therapeutics to counter these pathogens.
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Affiliation(s)
- Natalie C Marshall
- From the ‡Department of Microbiology & Immunology.,§Michael Smith Laboratories
| | - B Brett Finlay
- From the ‡Department of Microbiology & Immunology.,§Michael Smith Laboratories.,¶Department of Biochemistry & Molecular Biology
| | - Christopher M Overall
- ¶Department of Biochemistry & Molecular Biology, .,**Department of Oral Biological & Medical Sciences, Centre for Blood Research, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
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Boxio R, Wartelle J, Nawrocki-Raby B, Lagrange B, Malleret L, Hirche T, Taggart C, Pacheco Y, Devouassoux G, Bentaher A. Neutrophil elastase cleaves epithelial cadherin in acutely injured lung epithelium. Respir Res 2016; 17:129. [PMID: 27751187 PMCID: PMC5067913 DOI: 10.1186/s12931-016-0449-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 10/10/2016] [Indexed: 01/05/2023] Open
Abstract
Background In acutely injured lungs, massively recruited polymorphonuclear neutrophils (PMNs) secrete abnormally neutrophil elastase (NE). Active NE creates a localized proteolytic environment where various host molecules are degraded leading to impairment of tissue homeostasis. Among the hallmarks of neutrophil-rich pathologies is a disrupted epithelium characterized by the loss of cell-cell adhesion and integrity. Epithelial-cadherin (E-cad) represents one of the most important intercellular junction proteins. E-cad exhibits various functions including its role in maintenance of tissue integrity. While much interest has focused on the expression and role of E-cad in different physio- and physiopathological states, proteolytic degradation of this structural molecule and ensuing potential consequences on host lung tissue injury are not completely understood. Methods NE capacity to cleave E-cad was determined in cell-free and lung epithelial cell culture systems. The impact of such cleavage on epithelial monolayer integrity was then investigated. Using mice deficient in NE in a clinically relevant experimental model of acute pneumonia, we examined whether degraded E-cad is associated with lung inflammation and injury and whether NE contributes to E-cad cleavage. Finally, we checked for the presence of both degraded E-cad and NE in bronchoalveolar lavage samples obtained from patients with exacerbated COPD, a clinical manifestation characterised by a neutrophilic inflammatory response. Results We show that NE is capable of degrading E-cad in vitro and in cultured cells. NE-mediated degradation of E-cad was accompanied with loss of epithelial monolayer integrity. Our in vivo findings provide evidence that NE contributes to E-cad cleavage that is concomitant with lung inflammation and injury. Importantly, we observed that the presence of degraded E-cad coincided with the detection of NE in diseased human lungs. Conclusions Active NE has the capacity to cleave E-cad and interfere with its cell-cell adhesion function. These data suggest a mechanism by which unchecked NE participates potentially to the pathogenesis of neutrophil-rich lung inflammatory and tissue-destructive diseases. Electronic supplementary material The online version of this article (doi:10.1186/s12931-016-0449-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rachel Boxio
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France
| | - Julien Wartelle
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France
| | | | - Brice Lagrange
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France
| | - Laurette Malleret
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France
| | - Timothee Hirche
- Department of Pulmonary Medicine, German Clinic for Diagnostics (DKD), Wiesbaden, Germany
| | - Clifford Taggart
- Centre for Infection and Immunity, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Yves Pacheco
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France
| | - Gilles Devouassoux
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France.,CHU Croix-Rousse, Lyon, France
| | - Abderrazzaq Bentaher
- Inflammation and Immunity of the Respiratory Epithelium Group, Faculté de Médecine Lyon Sud, EA 7426, UCBL 1, Inserm U-1111, Pierre Benite - Lyon Sud, France.
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Ilex kaushue and Its Bioactive Component 3,5-Dicaffeoylquinic Acid Protected Mice from Lipopolysaccharide-Induced Acute Lung Injury. Sci Rep 2016; 6:34243. [PMID: 27681838 PMCID: PMC5041076 DOI: 10.1038/srep34243] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 09/09/2016] [Indexed: 12/15/2022] Open
Abstract
Acute lung injury (ALI) is a severe respiratory disease with high mortality rates worldwide. Recent reports suggest that human neutrophil elastase (HNE) plays a key role in the inflammatory response that is characteristic of ALI, which indicates that the development of HNE inhibitors could be an efficient treatment strategy. In the current study, an enzyme-based screening assay was used to identify effective HNE inhibitors from a number of traditional Chinese medicines (TCMs). Among them, a water extract of Ilex kaushue (IKWE) effectively inhibited HNE activity (IC50, 11.37 ± 1.59 μg/mL). Using bioactivity-guided fractionation, one new compound and 23 known compounds were identified. Compound 6 (identified as 3,5-dicaffeoylquinic acid; 3,5-DCQA) exerted the most potent and selective inhibitory effect on HNE activity (IC50, 1.86 ± 0.06 μM). In a cell-based assay, 3,5-DCQA not only directly reduced superoxide generation and elastase activity but also attenuated the Src family kinase (SRKs)/Vav signaling pathway in N-formyl-L-Met-L-Leu-L-Phe (fMLF)-stimulated human neutrophils. In an animal disease model, both 3,5-DCQA and standardized IKWE protected against lipopolysaccharide-induced ALI in mice, which provides support for their potential as candidates in the development of new therapeutic agents for neutrophilic inflammatory diseases.
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Application of multiplex immunoassay technology to investigations of ocular disease. Expert Rev Mol Med 2016; 18:e15. [PMID: 27577534 DOI: 10.1017/erm.2016.15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Eye-derived fluids, including tears, aqueous humour and vitreous humour often contain molecular signatures of ocular disease states. These signatures can be composed of cytokines, chemokines, growth factors, proteases and soluble receptors. However, the small quantities (<10 µl) of these fluids severely limit the detection of these proteins by traditional enzyme-linked immunosorbent assay or Western blot. To maximise the amount of information generated from the analysis of these specimens, many researchers have employed multiplex immunoassay technologies for profiling the expression or modification of multiple proteins from minute sample volumes.
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Arecco N, Clarke CJ, Jones FK, Simpson DM, Mason D, Beynon RJ, Pisconti A. Elastase levels and activity are increased in dystrophic muscle and impair myoblast cell survival, proliferation and differentiation. Sci Rep 2016; 6:24708. [PMID: 27241590 PMCID: PMC4886533 DOI: 10.1038/srep24708] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 04/04/2016] [Indexed: 01/31/2023] Open
Abstract
In Duchenne muscular dystrophy, progressive loss of muscle tissue is accompanied by fibrosis, chronic inflammation and reduced muscle regenerative capacity. Although much is known about the development of fibrosis and chronic inflammation in muscular dystrophy, less is known about how they are mechanistically linked to loss of muscle regenerative capacity. We have developed a proteomics method to discover dystrophy-associated changes in the muscle progenitor cell niche, which identified serine proteases, and especially neutrophil elastase, as candidates. We show that elastase activity is increased in dystrophic (mdx4cv) muscle and impairs myoblast survival in culture. While the effect of elastase on C2C12 cell survival correlates with the kinetics of elastase-mediated degradation of the substrate to which the cells adhere, the effect of elastase on satellite cell-derived primary myoblast growth and differentiation is substrate-independent and even more dramatic than the effect on C2C12 cells, suggesting a detrimental role for elastase on myogenesis in vivo. Additionally, elastase impairs differentiation of both primary and C2C12 myoblasts into myotubes. Our findings evidence the importance of neutrophil-mediated inflammation in muscular dystrophy and indicate elastase-mediated regulation of myoblast behaviour as a potential mechanism underlying loss of regenerative capacity in dystrophic muscle.
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Affiliation(s)
- N Arecco
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - C J Clarke
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - F K Jones
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - D M Simpson
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK.,Centre for Proteome Research, University of Liverpool, Liverpool L69 7ZB, UK
| | - D Mason
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK.,Centre for Cell Imaging, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
| | - R J Beynon
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK.,Centre for Proteome Research, University of Liverpool, Liverpool L69 7ZB, UK
| | - A Pisconti
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK
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Yamaguchi R, Yamamoto T, Sakamoto A, Ishimaru Y, Narahara S, Sugiuchi H, Yamaguchi Y. A protease-activated receptor 2 agonist (AC-264613) suppresses interferon regulatory factor 5 and decreases interleukin-12p40 production by lipopolysaccharide-stimulated macrophages: Role of p53. Cell Biol Int 2016; 40:629-41. [DOI: 10.1002/cbin.10589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 01/28/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Rui Yamaguchi
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
- Graduate School of Medical Science; Kumamoto University Medical School; Chuo-ku Honjo 1-1-1 Kumamoto 860-8556 Japan
| | - Takatoshi Yamamoto
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
| | - Arisa Sakamoto
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
| | - Yasuji Ishimaru
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
| | - Shinji Narahara
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
| | - Hiroyuki Sugiuchi
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
| | - Yasuo Yamaguchi
- Graduate School of Medical Science; Kumamoto Health Science University; Kitaku Izumi-machi 325 Kumamoto 861-5598 Japan
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Stockley RA. α1-antitrypsin: a polyfunctional protein? THE LANCET RESPIRATORY MEDICINE 2016; 3:341-3. [PMID: 25969357 DOI: 10.1016/s2213-2600(15)00094-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 02/26/2015] [Indexed: 01/20/2023]
Affiliation(s)
- Robert A Stockley
- Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, B15 2WB, UK.
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Tavares N, Afonso L, Suarez M, Ampuero M, Prates DB, Araújo-Santos T, Barral-Netto M, DosReis GA, Borges VM, Brodskyn C. Degranulating Neutrophils Promote Leukotriene B4 Production by Infected Macrophages To Kill Leishmania amazonensis Parasites. THE JOURNAL OF IMMUNOLOGY 2016; 196:1865-73. [PMID: 26800873 DOI: 10.4049/jimmunol.1502224] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/17/2015] [Indexed: 11/19/2022]
Abstract
Neutrophils mediate early responses against pathogens, and they become activated during endothelial transmigration toward the inflammatory site. In the current study, human neutrophils were activated in vitro with immobilized extracellular matrix proteins, such as fibronectin (FN), collagen, and laminin. Neutrophil activation by FN, but not other extracellular matrix proteins, induces the release of the granules' contents, measured as matrix metalloproteinase 9 and neutrophil elastase activity in culture supernatant, as well as reactive oxygen species production. Upon contact with Leishmania amazonensis-infected macrophages, these FN-activated neutrophils reduce the parasite burden through a mechanism independent of cell contact. The release of granule proteases, such as myeloperoxidase, neutrophil elastase, and matrix metalloproteinase 9, activates macrophages through TLRs, leading to the production of inflammatory mediators, TNF-α and leukotriene B4 (LTB4), which are involved in parasite killing by infected macrophages. The pharmacological inhibition of degranulation reverted this effect, abolishing LTB4 and TNF production. Together, these results suggest that FN-driven degranulation of neutrophils induces the production of LTB4 and TNF by infected macrophages, leading to the control of Leishmania infection.
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Affiliation(s)
- Natália Tavares
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil
| | - Lilian Afonso
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil
| | - Martha Suarez
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Mariana Ampuero
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Deboraci Brito Prates
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Théo Araújo-Santos
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil
| | - Manoel Barral-Netto
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Universidade Federal da Bahia, Salvador, Bahia, Brazil; Instituto de Investigação em Imunologia, São Paulo, Brazil
| | - George A DosReis
- Instituto de Biofísica Carlos Chagas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; and Instituto Nacional de Saúde e Ambiente na Região Amazônica, Rio de Janeiro, Brazil
| | - Valéria Matos Borges
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Universidade Federal da Bahia, Salvador, Bahia, Brazil;
| | - Cláudia Brodskyn
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Bahia, Brazil; Universidade Federal da Bahia, Salvador, Bahia, Brazil; Instituto de Investigação em Imunologia, São Paulo, Brazil;
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Marino F, Tozzi M, Schembri L, Ferraro S, Tarallo A, Scanzano A, Legnaro M, Castelli P, Cosentino M. Production of IL-8, VEGF and Elastase by Circulating and Intraplaque Neutrophils in Patients with Carotid Atherosclerosis. PLoS One 2015; 10:e0124565. [PMID: 25893670 PMCID: PMC4404350 DOI: 10.1371/journal.pone.0124565] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 03/16/2015] [Indexed: 12/25/2022] Open
Abstract
Objectives Polymorphonuclear neutrophils (PMN) in atherosclerotic plaques have been identified only recently, and their contribution to plaque development is not yet fully understood. In this study, production of elastase, interleukin (IL)-8 and vascular endothelial growth factor (VEGF) by PMN was investigated in subjects with carotid stenosis undergoing carotid endarterectomy (CEA). Methods The study enrolled 50 patients (Pts) and 10 healthy subjects (HS). Circulating PMN (cPMN) isolated from venous blood (in both Pts and HS) and from plaques (pPMN, in Pts) were cultured, alone or with 0.1 μM fMLP. Elastase, IL-8 and VEGF mRNA were analyzed by real-time PCR. In CEA specimens, PMN were localized by immunohistochemistry. Results In both Pts cPMN and pPMN, IL-8 mRNA was higher at rest but lower after fMLP (P<0.01 vs HS), and VEGF mRNA was higher both at rest and after fMLP (P<0.01 vs HS), while elastase mRNA was not significantly different. On the contrary, protein production was always higher in cPMN of HS with respect to values measured in cells of Pts. In CEA specimens, CD66b+ cells localized to areas with massive plaque formation close to neovessels. Pts with soft and mix plaques, as defined by computed tomography, did not differ in cPMN or pPMN IL-8, VEGF or elastase mRNA, or in intraplaque CD66b+ cell density. However, Pts with soft plaques had higher white blood cell count due to increased PMN. Conclusions In Pts with carotid plaques, both circulating and intraplaque PMN produce IL-8, VEGF and elastase, which are crucial for plaque development and progression. These findings suggest mechanistic explanations to the reported correlation between PMN count and cardiovascular mortality in carotid ATH.
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Affiliation(s)
- Franca Marino
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
- * E-mail:
| | - Matteo Tozzi
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Laura Schembri
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Stefania Ferraro
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Antonino Tarallo
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Angela Scanzano
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Massimiliano Legnaro
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Patrizio Castelli
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Marco Cosentino
- Center of Research in Medical Pharmacology, University of Insubria, Varese, Italy
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Granulocyte-macrophage colony-stimulating factor primes interleukin-13 production by macrophages via protease-activated receptor-2. Blood Cells Mol Dis 2015; 54:353-9. [PMID: 25633855 DOI: 10.1016/j.bcmd.2015.01.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 01/11/2015] [Indexed: 01/12/2023]
Abstract
Chronic inflammation is often linked to the presence of type 2-polarized macrophages, which are induced by the T helper type 2 cytokines interleukin-4 and interleukin-13 (IL-13). IL-13 is a key mediator of tissue fibrosis caused by T helper type 2-based inflammation. Human neutrophil elastase (HNE) plays a pivotal role in the pathogenesis of pulmonary fibrosis. This study investigated the priming effect of granulocyte-macrophage colony-stimulating factor (GM-CSF) on IL-13 expression by macrophages stimulated with HNE. Adherent macrophages were obtained from primary cultures of human mononuclear cells. Expression of IL-13 mRNA and protein by GM-CSF-dependent macrophages was investigated after stimulation with HNE, using the polymerase chain reaction and enzyme-linked immunosorbent assay. GM-CSF had a priming effect on IL-13 mRNA and protein expression by macrophages stimulated with HNE, while this effect was not observed for various other cytokines. GM-CSF-dependent macrophages showed a significant increase in the expression of protease activated receptor-2 (PAR-2) mRNA and protein. The response of IL-13 mRNA to HNE was significantly decreased by pretreatment with alpha1-antitrypsin, a PAR-2 antibody (SAM11), or a PAR-2 antagonist (ENMD-1068). These findings suggest that stimulation with HNE can induce IL-13 production by macrophages, especially GM-CSF-dependent macrophages. Accordingly, neutrophil elastase may have a key role in fibrosis associated with chronic inflammation.
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Barrientos L, Bignon A, Gueguen C, de Chaisemartin L, Gorges R, Sandré C, Mascarell L, Balabanian K, Kerdine-Römer S, Pallardy M, Marin-Esteban V, Chollet-Martin S. Neutrophil extracellular traps downregulate lipopolysaccharide-induced activation of monocyte-derived dendritic cells. THE JOURNAL OF IMMUNOLOGY 2014; 193:5689-98. [PMID: 25339673 DOI: 10.4049/jimmunol.1400586] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Polymorphonuclear neutrophils (PMN) play a central role in inflammation and participate in its control, notably by modulating dendritic cell (DC) functions via soluble mediators or cell-cell contacts. Neutrophil extracellular traps (NETs) released by PMN could play a role in this context. To evaluate NET effects on DC maturation, we developed a model based on monocyte-derived DC (moDC) and calibrated NETs isolated from fresh human PMN. We found that isolated NETs alone had no discernable effect on moDC. In contrast, they downregulated LPS-induced moDC maturation, as shown by decreased surface expression of HLA-DR, CD80, CD83, and CD86, and by downregulated cytokine production (TNF-α, IL-6, IL-12, IL-23), with no increase in the expression of tolerogenic DC genes. Moreover, the presence of NETs during moDC maturation diminished the capacity of these moDC to induce T lymphocyte proliferation in both autologous and allogeneic conditions, and modulated CD4(+) T lymphocyte polarization by promoting the production of Th2 cytokines (IL-5 and IL-13) and reducing that of Th1 and Th17 cytokines (IFN-γ and IL-17). Interestingly, the expression and activities of the lymphoid chemokine receptors CCR7 and CXCR4 on moDC were not altered when moDC matured in the presence of NETs. Together, these findings reveal a new role for NETs in adaptive immune responses, modulating some moDC functions and thereby participating in the control of inflammation.
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Affiliation(s)
- Lorena Barrientos
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France
| | - Alexandre Bignon
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Laboratory of Excellence in Research on Medication and Innovative Therapeutics, 92296 Clamart, France
| | | | - Luc de Chaisemartin
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France; Assistance Publique Hôpitaux de Paris, Groupe Hospitalier Paris Nord Val de Seine, Hôpital Bichat, Unité d'Immunologie (Auto-immunité et Hypersensibilités), 75018 Paris, France
| | - Roseline Gorges
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France
| | - Catherine Sandré
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France
| | | | - Karl Balabanian
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Laboratory of Excellence in Research on Medication and Innovative Therapeutics, 92296 Clamart, France
| | - Saadia Kerdine-Römer
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France
| | - Marc Pallardy
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France
| | - Viviana Marin-Esteban
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France
| | - Sylvie Chollet-Martin
- INSERM, Unité Mixte de Recherche-S 996, "Cytokines, chimiokines et immunopathologie," Université Paris-Sud, 92296 Châtenay-Malabry and Clamart, France; Université Paris-Sud, Faculté de Pharmacie, 92296 Châtenay-Malabry, France; Assistance Publique Hôpitaux de Paris, Groupe Hospitalier Paris Nord Val de Seine, Hôpital Bichat, Unité d'Immunologie (Auto-immunité et Hypersensibilités), 75018 Paris, France
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Lugrin J, Rosenblatt-Velin N, Parapanov R, Liaudet L. The role of oxidative stress during inflammatory processes. Biol Chem 2014; 395:203-30. [PMID: 24127541 DOI: 10.1515/hsz-2013-0241] [Citation(s) in RCA: 445] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 10/09/2013] [Indexed: 12/22/2022]
Abstract
Abstract The production of various reactive oxidant species in excess of endogenous antioxidant defense mechanisms promotes the development of a state of oxidative stress, with significant biological consequences. In recent years, evidence has emerged that oxidative stress plays a crucial role in the development and perpetuation of inflammation, and thus contributes to the pathophysiology of a number of debilitating illnesses, such as cardiovascular diseases, diabetes, cancer, or neurodegenerative processes. Oxidants affect all stages of the inflammatory response, including the release by damaged tissues of molecules acting as endogenous danger signals, their sensing by innate immune receptors from the Toll-like (TLRs) and the NOD-like (NLRs) families, and the activation of signaling pathways initiating the adaptive cellular response to such signals. In this article, after summarizing the basic aspects of redox biology and inflammation, we review in detail the current knowledge on the fundamental connections between oxidative stress and inflammatory processes, with a special emphasis on the danger molecule high-mobility group box-1, the TLRs, the NLRP-3 receptor, and the inflammasome, as well as the transcription factor nuclear factor-κB.
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Unopposed Cathepsin G, Neutrophil Elastase, and Proteinase 3 Cause Severe Lung Damage and Emphysema. THE AMERICAN JOURNAL OF PATHOLOGY 2014; 184:2197-210. [DOI: 10.1016/j.ajpath.2014.04.015] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 04/02/2014] [Accepted: 04/21/2014] [Indexed: 12/20/2022]
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Innate immunity to Leishmania infection: within phagocytes. Mediators Inflamm 2014; 2014:754965. [PMID: 25110400 PMCID: PMC4119695 DOI: 10.1155/2014/754965] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 06/17/2014] [Indexed: 12/24/2022] Open
Abstract
Infection by Leishmania takes place in the context of inflammation and tissue repair. Besides tissue resident macrophages, inflammatory macrophages and neutrophils are recruited to the infection site and serve both as host cells and as effectors against infection. Recent studies suggest additional important roles for monocytes and dendritic cells. This paper addresses recent experimental findings regarding the regulation of Leishmania major infection by these major phagocyte populations. In addition, the role of IL-4 on dendritic cells and monocytes is discussed.
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50
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The landscape of protein biomarkers proposed for periodontal disease: markers with functional meaning. BIOMED RESEARCH INTERNATIONAL 2014; 2014:569632. [PMID: 25057495 PMCID: PMC4099050 DOI: 10.1155/2014/569632] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 04/07/2014] [Indexed: 12/12/2022]
Abstract
Periodontal disease (PD) is characterized by a deregulated inflammatory response which fails to resolve, activating bone resorption. The identification of the proteomes associated with PD has fuelled biomarker proposals; nevertheless, many questions remain. Biomarker selection should favour molecules representing an event which occurs throughout the disease progress. The analysis of proteome results and the information available for each protein, including its functional role, was accomplished using the OralOme database. The integrated analysis of this information ascertains if the suggested proteins reflect the cell and/or molecular mechanisms underlying the different forms of periodontal disease. The evaluation of the proteins present/absent or with very different concentrations in the proteome of each disease state was used for the identification of the mechanisms shared by different PD variants or specific to such state. The information presented is relevant for the adequate design of biomarker panels for PD. Furthermore, it will open new perspectives and help envisage future studies targeted to unveil the functional role of specific proteins and help clarify the deregulation process in the PD inflammatory response.
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