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Bréa D, Soler L, Fleurot I, Melo S, Chevaleyre C, Berri M, Labas V, Teixeira-Gomes AP, Pujo J, Cenac N, Bähr A, Klymiuk N, Guillon A, Si-Tahar M, Caballero I. Intrinsic alterations in peripheral neutrophils from cystic fibrosis newborn piglets. J Cyst Fibros 2020; 19:830-836. [PMID: 32165155 DOI: 10.1016/j.jcf.2020.02.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/22/2020] [Accepted: 02/23/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND The hallmark of the cystic fibrosis (CF) lung disease is a neutrophil dominated lung environment that is associated to chronic lung tissue destruction and ultimately the patient's death. It is unclear whether the exacerbated neutrophil response is primary related to a defective CFTR or rather secondary to chronic bacterial colonization and inflammation. Here, we hypothesized that CF peripheral blood neutrophils present intrinsic alteration at birth before the start of an inflammatory process. METHODS Peripheral blood neutrophils were isolated from newborn CFTR+/+ and CFTR-/- piglets. Neutrophils immunophenotype was evaluated by flow cytometry. Lipidomic and proteomic profile were characterized by liquid chromatography/tandem mass spectrometry (LC-MS/MS), intact cell matrix-assisted laser desorption/ionization mass spectrometry (ICM-MS) followed by top-down high-resolution mass spectrometry (HRMS), respectively. The ability of CF neutrophils to kill pseudomonas aeruginosa was also evaluated. RESULTS Polyunsaturated fatty acid metabolites analysis did not show any difference between CFTR+/+ and CFTR-/- neutrophils. On the other hand, a predictive mathematical model based on the ICM-MS proteomic profile was able to discriminate between both genotypes. Top-down proteomic analysis identified 19 m/z differentially abundant masses that corresponded mainly to proteins related to the antimicrobial response and the generation of reactive oxygen species (ROS). However, no alteration in the ability of CFTR-/- neutrophils to kill pseudomonas aeruginosa in vitro was observed. CONCLUSIONS ICM-MS demonstrated that CFTR-/- neutrophils present intrinsic alterations already at birth, before the presence of any infection or inflammation.
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Affiliation(s)
- Déborah Bréa
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France; Université de Tours, Faculté de Médecine de Tours, Tours, France
| | - Laura Soler
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Isabelle Fleurot
- ISP, INRA, Université de Tours, UMR 1282, 37380, Nouzilly, France
| | - Sandrine Melo
- ISP, INRA, Université de Tours, UMR 1282, 37380, Nouzilly, France
| | | | - Mustapha Berri
- ISP, INRA, Université de Tours, UMR 1282, 37380, Nouzilly, France
| | - Valérie Labas
- INRA UMR85-CNRS UMR7247 Physiologie de la Reproduction et des Comportements, Nouzilly, France; INRA, Plate-forme de Chirurgie et d'Imagerie pour la Recherche et l'Enseignement (CIRE), Pôle d'Analyse et d'Imagerie des Biomolécules (PAIB), Nouzilly, France
| | - Ana-Paula Teixeira-Gomes
- ISP, INRA, Université de Tours, UMR 1282, 37380, Nouzilly, France; INRA, Plate-forme de Chirurgie et d'Imagerie pour la Recherche et l'Enseignement (CIRE), Pôle d'Analyse et d'Imagerie des Biomolécules (PAIB), Nouzilly, France
| | - Julien Pujo
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Nicolas Cenac
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Andrea Bähr
- Gene Center and Center for Innovative Medical Models (CiMM), LMU Munich, Germany
| | - Nikolai Klymiuk
- Gene Center and Center for Innovative Medical Models (CiMM), LMU Munich, Germany
| | - Antoine Guillon
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France; Université de Tours, Faculté de Médecine de Tours, Tours, France; CHRU Tours, service de médecine intensive réanimation, Tours, France
| | - Mustapha Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France; Université de Tours, Faculté de Médecine de Tours, Tours, France
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Morello E, Pérez-Berezo T, Boisseau C, Baranek T, Guillon A, Bréa D, Lanotte P, Carpena X, Pietrancosta N, Hervé V, Ramphal R, Cenac N, Si-Tahar M. Pseudomonas aeruginosa Lipoxygenase LoxA Contributes to Lung Infection by Altering the Host Immune Lipid Signaling. Front Microbiol 2019; 10:1826. [PMID: 31474948 PMCID: PMC6702342 DOI: 10.3389/fmicb.2019.01826] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 07/24/2019] [Indexed: 01/17/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic bacteria and a major cause of nosocomial pneumonia. P. aeruginosa has many virulence factors contributing to its ability to colonize the host. LoxA is a lipoxygenase enzyme secreted by P. aeruginosa that oxidizes polyunsaturated fatty acids. Based on previous in vitro biochemical studies, several biological roles of LoxA have been hypothesized, including interference of the host lipid signaling, and modulation of bacterial invasion properties. However, the contribution of LoxA to P. aeruginosa lung pathogenesis per se remained unclear. In this study, we used complementary in vitro and in vivo approaches, clinical strains of P. aeruginosa as well as lipidomics technology to investigate the role of LoxA in lung infection. We found that several P. aeruginosa clinical isolates express LoxA. When secreted in the lungs, LoxA processes a wide range of host polyunsaturated fatty acids, which further results in the production of bioactive lipid mediators (including lipoxin A4). LoxA also inhibits the expression of major chemokines (e.g., MIPs and KC) and the recruitment of key leukocytes. Remarkably, LoxA promotes P. aeruginosa persistence in lungs tissues. Hence, our study suggests that LoxA-dependent interference of the host lipid pathways may contribute to P. aeruginosa lung pathogenesis.
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Affiliation(s)
- Eric Morello
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Teresa Pérez-Berezo
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, Ecole Nationale Vétérinaire de Toulouse, Toulouse, France
| | - Chloé Boisseau
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Thomas Baranek
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Antoine Guillon
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Déborah Bréa
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Philippe Lanotte
- CHRU de Tours, Service de Bactériologie-Virologie, Tours, France.,Université de Tours, UMR1282 ISP, Faculté de Médecine, Equipe Bactéries et Risque Materno-Foetal, Tours, France
| | - Xavier Carpena
- Institut de Biologia Molecular de Barcelona, Parc Científic de Barcelona, Barcelona, Spain.,XALOC Beamline, ALBA Synchrotron, Cerdanyola del Vallès, Spain
| | - Nicolas Pietrancosta
- Plateau 2MI, CNRS UMR8601, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Centre Universitaire des Saints-Pères, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Virginie Hervé
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
| | - Reuben Ramphal
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France.,Department of Medicine, University of Florida, Gainesville, FL, United States
| | - Nicolas Cenac
- Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRA, Ecole Nationale Vétérinaire de Toulouse, Toulouse, France
| | - Mustapha Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France.,Université de Tours, Tours, France
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Baranek T, Morello E, Valayer A, Aimar RF, Bréa D, Henry C, Besnard AG, Dalloneau E, Guillon A, Dequin PF, Narni-Mancinelli E, Vivier E, Laurent F, Wei Y, Paget C, Si-Tahar M. FHL2 Regulates Natural Killer Cell Development and Activation during Streptococcus pneumoniae Infection. Front Immunol 2017; 8:123. [PMID: 28243234 PMCID: PMC5303898 DOI: 10.3389/fimmu.2017.00123] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 01/25/2017] [Indexed: 12/21/2022] Open
Abstract
Recent in silico studies suggested that the transcription cofactor LIM-only protein FHL2 is a major transcriptional regulator of mouse natural killer (NK) cells. However, the expression and role of FHL2 in NK cell biology are unknown. Here, we confirm that FHL2 is expressed in both mouse and human NK cells. Using FHL2−/− mice, we found that FHL2 controls NK cell development in the bone marrow and maturation in peripheral organs. To evaluate the importance of FHL2 in NK cell activation, FHL2−/− mice were infected with Streptococcus pneumoniae. FHL2−/− mice are highly susceptible to this infection. The activation of lung NK cells is altered in FHL2−/− mice, leading to decreased IFNγ production and a loss of control of bacterial burden. Collectively, our data reveal that FHL2 is a new transcription cofactor implicated in NK cell development and activation during pulmonary bacterial infection.
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Affiliation(s)
- Thomas Baranek
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Eric Morello
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Alexandre Valayer
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Rose-France Aimar
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Déborah Bréa
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Clemence Henry
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Anne-Gaelle Besnard
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Emilie Dalloneau
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Antoine Guillon
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France; Service de Réanimation Polyvalente, Centre Hospitalier Régional Universitaire, Tours, France
| | - Pierre-François Dequin
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France; Service de Réanimation Polyvalente, Centre Hospitalier Régional Universitaire, Tours, France
| | - Emilie Narni-Mancinelli
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS , Marseille , France
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, Marseille, France; Hôpital de la Timone, Assistance Publique-Hôpitaux de Marseille, Marseille, France
| | | | - Yu Wei
- Hépacivirus et immunité innée, Institut Pasteur , Paris , France
| | - Christophe Paget
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
| | - Mustapha Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université François Rabelais, Tours, France
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4
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Chevaleyre C, Riou M, Bréa D, Vandebrouck C, Barc C, Pezant J, Melo S, Olivier M, Delaunay R, Boulesteix O, Berthon P, Rossignol C, Burlaud Gaillard J, Becq F, Gauthier F, Si-Tahar M, Meurens F, Berri M, Caballero-Posadas I, Attucci S. The Pig: A Relevant Model for Evaluating the Neutrophil Serine Protease Activities during Acute Pseudomonas aeruginosa Lung Infection. PLoS One 2016; 11:e0168577. [PMID: 27992534 PMCID: PMC5161375 DOI: 10.1371/journal.pone.0168577] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 12/02/2016] [Indexed: 12/18/2022] Open
Abstract
The main features of lung infection and inflammation are a massive recruitment of neutrophils and the subsequent release of neutrophil serine proteases (NSPs). Anti-infectious and/or anti-inflammatory treatments must be tested on a suitable animal model. Mice models do not replicate several aspects of human lung disease. This is particularly true for cystic fibrosis (CF), which has led the scientific community to a search for new animal models. We have shown that mice are not appropriate for characterizing drugs targeting neutrophil-dependent inflammation and that pig neutrophils and their NSPs are similar to their human homologues. We induced acute neutrophilic inflammatory responses in pig lungs using Pseudomonas aeruginosa, an opportunistic respiratory pathogen. Blood samples, nasal swabs and bronchoalveolar lavage fluids (BALFs) were collected at 0, 3, 6 and 24 h post-insfection (p.i.) and biochemical parameters, serum and BAL cytokines, bacterial cultures and neutrophil activity were evaluated. The release of proinflammatory mediators, biochemical and hematological blood parameters, cell recruitment and bronchial reactivity, peaked at 6h p.i.. We also used synthetic substrates specific for human neutrophil proteases to show that the activity of pig NSPs in BALFs increased. These proteases were also detected at the surface of lung neutrophils using anti-human NSP antibodies. Pseudomonas aeruginosa-induced lung infection in pigs results in a neutrophilic response similar to that described for cystic fibrosis and ventilator-associated pneumonia in humans. Altogether, this indicates that the pig is an appropriate model for testing anti-infectious and/or anti-inflammatory drugs to combat adverse proteolytic effects of neutrophil in human lung diseases.
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Affiliation(s)
- Claire Chevaleyre
- Infectiologie et Santé Publique (UMR 1282 ISP), INRA, Université Tours, Nouzilly, France
| | - Mickaël Riou
- Plateforme d'Infectiologie expérimentale (UE-1277 PFIE), INRA, Nouzilly, France
| | - Déborah Bréa
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France
| | - Clarisse Vandebrouck
- Laboratoire Signalisation et Transports Ioniques Membranaires, Université de Poitiers, Centre National de la Recherche Scientifique, Poitiers cedex, France
| | - Céline Barc
- Plateforme d'Infectiologie expérimentale (UE-1277 PFIE), INRA, Nouzilly, France
| | - Jérémy Pezant
- Plateforme d'Infectiologie expérimentale (UE-1277 PFIE), INRA, Nouzilly, France
| | - Sandrine Melo
- Infectiologie et Santé Publique (UMR 1282 ISP), INRA, Université Tours, Nouzilly, France
| | - Michel Olivier
- Infectiologie et Santé Publique (UMR 1282 ISP), INRA, Université Tours, Nouzilly, France
| | - Rémy Delaunay
- Plateforme d'Infectiologie expérimentale (UE-1277 PFIE), INRA, Nouzilly, France
| | - Olivier Boulesteix
- Plateforme d'Infectiologie expérimentale (UE-1277 PFIE), INRA, Nouzilly, France
| | - Patricia Berthon
- Infectiologie et Santé Publique (UMR 1282 ISP), INRA, Université Tours, Nouzilly, France
| | - Christelle Rossignol
- Infectiologie et Santé Publique (UMR 1282 ISP), INRA, Université Tours, Nouzilly, France
| | - Julien Burlaud Gaillard
- Département des Microscopies (Plateau technologique Analyse des systèmes Biologiques), Université François-Rabelais, Tours cedex, France
| | - Frédéric Becq
- Laboratoire Signalisation et Transports Ioniques Membranaires, Université de Poitiers, Centre National de la Recherche Scientifique, Poitiers cedex, France
| | - Francis Gauthier
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France
| | - Mustapha Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France
| | - François Meurens
- BioEpAR, Oniris, Nantes Atlantic National College of Veterinary Medicine, Food Science and Engineering La Chantrerie, Nantes Cedex 3, France
| | - Mustapha Berri
- Infectiologie et Santé Publique (UMR 1282 ISP), INRA, Université Tours, Nouzilly, France
| | | | - Sylvie Attucci
- INSERM, Centre d'Etude des Pathologies Respiratoires, UMR 1100, Tours cedex, France
- * E-mail:
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Dubois AV, Midoux P, Gras D, Si-Tahar M, Bréa D, Attucci S, Khelloufi MK, Ramphal R, Diot P, Gauthier F, Hervé V. Poly-L-Lysine compacts DNA, kills bacteria, and improves protease inhibition in cystic fibrosis sputum. Am J Respir Crit Care Med 2013; 188:703-9. [PMID: 23947381 DOI: 10.1164/rccm.201305-0912oc] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
RATIONALE Neutrophil serine proteases in cystic fibrosis (CF) lung secretions partially resist inhibition by natural and exogenous inhibitors, mostly because DNA impairs their control. Cationic polypeptides display the property of condensing DNA and retain antimicrobial properties. We hypothesized that DNA condensation by cationic polypeptides in CF sputum would result in a better control of CF inflammation and infection. OBJECTIVES We examined whether poly-L-lysine would compact DNA in CF lung secretions and liquefy CF sputum, improve the control of extracellular proteases by exogenous inhibitors, and whether it displays antibacterial properties toward CF-associated bacteria. METHODS We used fluorogenic methods to measure proteolytic activities and inhibition by protease inhibitors in whole sputum homogenates from patients with CF before and after treatment with poly-L-lysine. Antibacterial properties of poly-L-lysine were measured in bacterial cultures and in whole CF sputum. Poly-L-lysine toxicity was evaluated after aerosolization by histologic analysis, flow cytometry, and quantification of proinflammatory cytokines. MEASUREMENTS AND MAIN RESULTS Poly-L-lysine compacts CF sputum DNA, generating a liquid phase that improves ciliary beating frequency at the lung epithelial surface, and allows the control of neutrophil elastase and cathepsin G by their natural inhibitors. It retains antimicrobial properties against Pseudomonas aeruginosa and Staphylococcus aureus at doses that induce no inflammation in the mouse lung after aerosol administration. CONCLUSIONS Poly-L-lysine may be an alternative to dornase-α to liquefy sputum with added benefits because it helps natural inhibitors to better control the deleterious effects of extracellularly released neutrophil serine proteases and has the ability to kill bacteria in CF sputum.
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Dubois AV, Gauthier A, Bréa D, Varaigne F, Diot P, Gauthier F, Attucci S. Influence of DNA on the activities and inhibition of neutrophil serine proteases in cystic fibrosis sputum. Am J Respir Cell Mol Biol 2012; 47:80-6. [PMID: 22343221 DOI: 10.1165/rcmb.2011-0380oc] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Uncontrolled proteolysis by neutrophil serine proteases (NSPs) in lung secretions is a hallmark of cystic fibrosis (CF). We have shown that the active neutrophil elastase, protease 3, and cathepsin G in CF sputum resist inhibition in part by exogenous protease inhibitors. This resistance may be due to their binding to neutrophil extracellular traps (NETs) secreted by the activated neutrophils in CF sputum and to genomic DNA released from senescent and dead neutrophils. Treating CF sputum with DNase dramatically increases its elastase activity, which can then be stoichiometrically inhibited by exogenous elastase inhibitors. However, DNase treatment does not increase the activities of protease 3 and cathepsin G, indicating their different distribution and/or binding in CF sputum. Purified blood neutrophils secrete NETs when stimulated by the opportunistic CF bacteria Pseudomonas aeruginosa and Staphylococcus aureus. The activities of the three proteases were unchanged in these conditions, but subsequent DNase treatment produced a dramatic increase in all three proteolytic activities. Neutrophils activated with a calcium ionophore did not secrete NETs but released huge amounts of active proteases whose activities were not modified by DNase. We conclude that NETs are reservoirs of active proteases that protect them from inhibition and maintain them in a rapidly mobilizable status. Combining the effects of protease inhibitors with that of DNA-degrading agents could counter the deleterious proteolytic effects of NSPs in CF lung secretions.
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Affiliation(s)
- Alice V Dubois
- INSERM U "Pathologies Respiratoires: protéolyse & aérosolthérapie," Tours, France
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