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Dong Y, Jia Z, Kang B, Zhang W. Annexin-A5 monomer as a membrane repair agent for the treatment of renal ischemia-reperfusion injury. Mol Biol Rep 2024; 51:679. [PMID: 38796668 DOI: 10.1007/s11033-024-09606-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 05/01/2024] [Indexed: 05/28/2024]
Abstract
BACKGROUND Renal ischemia-reperfusion injury (IRI) is one of the causes of acute kidney injury. Annexin A5 (AnxA5), a calcium-dependent cell membrane-binding protein, shows protective effects in various organ IRI models. This study explored the therapeutic effect of exogenous AnxA5 monomer protein on renal IRI and its potential mechanism of action. METHODS AND RESULTS Different doses of AnxA5 were injected intravenously to treat bilateral renal IRI in SD rats. This model confirmed the protective effects of AnxA5 on kidney structure and function. In vitro, HK-2 cells were subjected to hypoxia for 12 h, followed by restoration of normal oxygen supply to simulate IRI. In vitro experiments demonstrated the mechanism of action of AnxA5 by measuring cellular activity and permeability. A comparison of the mutant AnxA5 protein M23 and the application of a calcium-free culture medium further validated the protective effect of AnxA5 by forming a network structure. CONCLUSIONS Exogenous AnxA5 monomers prevented renal IRI by binding to the damaged renal tubular epithelial cell membrane, forming a two-dimensional network structure to maintain cell membrane integrity, and ultimately prevent cell death.
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Affiliation(s)
- Yushan Dong
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Shanghai Key Laboratory of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Zhuoxuan Jia
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Shanghai Key Laboratory of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Bijun Kang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- Shanghai Key Laboratory of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Wenjie Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
- Shanghai Key Laboratory of Tissue Engineering, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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2
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Ji XY, Lei CJ, Kong S, Li HF, Pan SY, Chen YJ, Zhao FR, Zhu TT. Hydroxy-Safflower Yellow A Mitigates Vascular Remodeling in Rat Pulmonary Arterial Hypertension. Drug Des Devel Ther 2024; 18:475-491. [PMID: 38405578 PMCID: PMC10893878 DOI: 10.2147/dddt.s439686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 02/13/2024] [Indexed: 02/27/2024] Open
Abstract
Purpose The underlying causes of pulmonary arterial hypertension (PAH) often remain obscure. Addressing PAH with effective treatments presents a formidable challenge. Studies have shown that Hydroxysafflor yellow A (HSYA) has a potential role in PAH, While the mechanism underlies its protective role is still unclear. The study was conducted to investigate the potential mechanisms of the protective effects of HSYA. Methods Using databases such as PharmMapper and GeneCards, we identified active components of HSYA and associated PAH targets, pinpointed intersecting genes, and constructed a protein-protein interaction (PPI) network. Core targets were singled out using Cytoscape for the development of a model illustrating drug-component-target-disease interactions. Intersection targets underwent analysis for Gene Ontology (GO) functions and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment. Selected components were then modeled for target interaction using Autodock and Pymol. In vivo validation in a monocrotaline-induced PAH (MCT-PAH) animal model was utilized to substantiate the predictions made by network pharmacology. Results We associated HSYA with 113 targets, and PAH with 1737 targets, identifying 34 mutual targets for treatment by HSYA. HSYA predominantly affects 9 core targets. Molecular docking unveiled hydrogen bond interactions between HSYA and several PAH-related proteins such as ANXA5, EGFR, SRC, PPARG, PGR, and ESR1. Conclusion Utilizing network pharmacology and molecular docking approaches, we investigated potential targets and relevant human disease pathways implicating HSYA in PAH therapy, such as the chemical carcinogenesis receptor activation pathway and the cancer pathway. Our findings were corroborated by the efficacious use of HSYA in an MCT-induced rat PAH model, confirming its therapeutic potential.
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Affiliation(s)
- Xiang-Yu Ji
- Department of Pharmacy, the First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Cheng-Jing Lei
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Shuang Kong
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Han-Fei Li
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Si-Yu Pan
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Yu-Jing Chen
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Fan-Rong Zhao
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
| | - Tian-Tian Zhu
- Department of Pharmacy, the First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- College of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, People’s Republic of China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang, Henan, People’s Republic of China
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3
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Yang W, Frickenstein AN, Sheth V, Holden A, Mettenbrink EM, Wang L, Woodward AA, Joo BS, Butterfield SK, Donahue ND, Green DE, Thomas AG, Harcourt T, Young H, Tang M, Malik ZA, Harrison RG, Mukherjee P, DeAngelis PL, Wilhelm S. Controlling Nanoparticle Uptake in Innate Immune Cells with Heparosan Polysaccharides. NANO LETTERS 2022; 22:7119-7128. [PMID: 36048773 PMCID: PMC9486251 DOI: 10.1021/acs.nanolett.2c02226] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We used heparosan (HEP) polysaccharides for controlling nanoparticle delivery to innate immune cells. Our results show that HEP-coated nanoparticles were endocytosed in a time-dependent manner by innate immune cells via both clathrin-mediated and macropinocytosis pathways. Upon endocytosis, we observed HEP-coated nanoparticles in intracellular vesicles and the cytoplasm, demonstrating the potential for nanoparticle escape from intracellular vesicles. Competition with other glycosaminoglycan types inhibited the endocytosis of HEP-coated nanoparticles only partially. We further found that nanoparticle uptake into innate immune cells can be controlled by more than 3 orders of magnitude via systematically varying the HEP surface density. Our results suggest a substantial potential for HEP-coated nanoparticles to target innate immune cells for efficient intracellular delivery, including into the cytoplasm. This HEP nanoparticle surface engineering technology may be broadly used to develop efficient nanoscale devices for drug and gene delivery as well as possibly for gene editing and immuno-engineering applications.
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Affiliation(s)
- Wen Yang
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Alex N. Frickenstein
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Vinit Sheth
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Alyssa Holden
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Evan M. Mettenbrink
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Lin Wang
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Alexis A. Woodward
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Bryan S. Joo
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Sarah K. Butterfield
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Nathan D. Donahue
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Dixy E. Green
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, USA
| | - Abigail G. Thomas
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Tekena Harcourt
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Hamilton Young
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Mulan Tang
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Zain A. Malik
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Roger G. Harrison
- School of Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
| | - Priyabrata Mukherjee
- Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, USA
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, USA
| | - Paul L. DeAngelis
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, USA
| | - Stefan Wilhelm
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma, 73019, USA
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, USA
- Institute for Biomedical Engineering, Science, and Technology (IBEST), University of Oklahoma, Norman, Oklahoma, 73019, USA
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4
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Meriwether D, Jones AE, Ashby JW, Solorzano-Vargas RS, Dorreh N, Noori S, Grijalva V, Ball AB, Semis M, Divakaruni AS, Mack JJ, Herschman HR, Martin MG, Fogelman AM, Reddy ST. Macrophage COX2 Mediates Efferocytosis, Resolution Reprogramming, and Intestinal Epithelial Repair. Cell Mol Gastroenterol Hepatol 2022; 13:1095-1120. [PMID: 35017061 PMCID: PMC8873959 DOI: 10.1016/j.jcmgh.2022.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Phagocytosis (efferocytosis) of apoptotic neutrophils by macrophages anchors the resolution of intestinal inflammation. Efferocytosis prevents secondary necrosis and inhibits further inflammation, and also reprograms macrophages to facilitate tissue repair and promote resolution function. Macrophage efferocytosis and efferocytosis-dependent reprogramming are implicated in the pathogenesis of inflammatory bowel disease. We previously reported that absence of macrophage cyclooxygenase 2 (COX2) exacerbates inflammatory bowel disease-like intestinal inflammation. To elucidate the underlying pathogenic mechanism, we investigated here whether COX2 mediates macrophage efferocytosis and efferocytosis-dependent reprogramming, including intestinal epithelial repair capacity. METHODS Using apoptotic neutrophils and synthetic apoptotic targets, we determined the effects of macrophage specific Cox2 knockout and pharmacological COX2 inhibition on the efferocytosis capacity of mouse primary macrophages. COX2-mediated efferocytosis-dependent eicosanoid lipidomics was determined by liquid chromatography tandem mass spectrometry. Small intestinal epithelial organoids were employed to assay the effects of COX2 on efferocytosis-dependent intestinal epithelial repair. RESULTS Loss of COX2 impaired efferocytosis in mouse primary macrophages, in part, by affecting the binding capacity of macrophages for apoptotic cells. This effect was comparable to that of high-dose lipopolysaccharide and was accompanied by both dysregulation of macrophage polarization and the inhibited expression of genes involved in apoptotic cell binding. COX2 modulated the production of efferocytosis-dependent lipid inflammatory mediators that include the eicosanoids prostaglandin I2, prostaglandin E2, lipoxin A4, and 15d-PGJ2; and further affected secondary efferocytosis. Finally, macrophage efferocytosis induced, in a macrophage COX2-dependent manner, a tissue restitution and repair phenotype in intestinal epithelial organoids. CONCLUSIONS Macrophage COX2 potentiates efferocytosis capacity and efferocytosis-dependent reprogramming, facilitating macrophage intestinal epithelial repair capacity.
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Affiliation(s)
- David Meriwether
- Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California,Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California,Correspondence Address correspondence to: David Meriwether, PhD, Department of Medicine, Division of Digestive Diseases, David Geffen School of Medicine at UCLA, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-5347. fax: 310-206-3605.
| | - Anthony E. Jones
- Department of Medical and Molecular Pharmacology, University of California, Los Angeles, Los Angeles, California
| | - Julianne W. Ashby
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - R. Sergio Solorzano-Vargas
- Division of Gastroenterology, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Nasrin Dorreh
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Shoreh Noori
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Victor Grijalva
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Andréa B. Ball
- Department of Medical and Molecular Pharmacology, University of California, Los Angeles, Los Angeles, California
| | - Margarita Semis
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Ajit S. Divakaruni
- Department of Medical and Molecular Pharmacology, University of California, Los Angeles, Los Angeles, California
| | - Julia J. Mack
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Harvey R. Herschman
- Department of Medical and Molecular Pharmacology, University of California, Los Angeles, Los Angeles, California
| | - Martin G. Martin
- Division of Gastroenterology, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Alan M. Fogelman
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Srinivasa T. Reddy
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California,Department of Medical and Molecular Pharmacology, University of California, Los Angeles, Los Angeles, California,Srinivasa T. Reddy, PhD, Department of Medicine, David Geffen School of Medicine at UCLA, 10833 Le Conte Avenue, Room 43-144 CHS, Los Angeles, CA 90095-1679. fax: 310-206-3605.
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5
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Plosa EJ, Benjamin JT, Sucre JM, Gulleman PM, Gleaves LA, Han W, Kook S, Polosukhin VV, Haake SM, Guttentag SH, Young LR, Pozzi A, Blackwell TS, Zent R. β1 Integrin regulates adult lung alveolar epithelial cell inflammation. JCI Insight 2020; 5:129259. [PMID: 31873073 PMCID: PMC7098727 DOI: 10.1172/jci.insight.129259] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 12/12/2019] [Indexed: 01/04/2023] Open
Abstract
Integrins, the extracellular matrix receptors that facilitate cell adhesion and migration, are necessary for organ morphogenesis; however, their role in maintaining adult tissue homeostasis is poorly understood. To define the functional importance of β1 integrin in adult mouse lung, we deleted it after completion of development in type 2 alveolar epithelial cells (AECs). Aged β1 integrin-deficient mice exhibited chronic obstructive pulmonary disease-like (COPD-like) pathology characterized by emphysema, lymphoid aggregates, and increased macrophage infiltration. These histopathological abnormalities were preceded by β1 integrin-deficient AEC dysfunction such as excessive ROS production and upregulation of NF-κB-dependent chemokines, including CCL2. Genetic deletion of the CCL2 receptor, Ccr2, in mice with β1 integrin-deficient type 2 AECs impaired recruitment of monocyte-derived macrophages and resulted in accelerated inflammation and severe premature emphysematous destruction. The lungs exhibited reduced AEC efferocytosis and excessive numbers of inflamed type 2 AECs, demonstrating the requirement for recruited monocytes/macrophages in limiting lung injury and remodeling in the setting of a chronically inflamed epithelium. These studies support a critical role for β1 integrin in alveolar homeostasis in the adult lung.
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Affiliation(s)
| | | | | | | | - Linda A. Gleaves
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and
| | - Wei Han
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and
| | | | - Vasiliy V. Polosukhin
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and
| | - Scott M. Haake
- Division of Hematology and Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA.,Nashville Veterans Affairs Medical Center, Nashville, Tennessee, USA
| | | | - Lisa R. Young
- Division of Pulmonary Medicine, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Ambra Pozzi
- Nashville Veterans Affairs Medical Center, Nashville, Tennessee, USA.,Division of Nephrology and Hypertension, Department of Medicine,,Department of Molecular Physiology and Biophysics, and
| | - Timothy S. Blackwell
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, and,Nashville Veterans Affairs Medical Center, Nashville, Tennessee, USA.,Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Roy Zent
- Nashville Veterans Affairs Medical Center, Nashville, Tennessee, USA.,Division of Nephrology and Hypertension, Department of Medicine,,Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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6
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Pierre A, Lemaire F, Meghraoui-Kheddar A, Audonnet S, Héry-Huynh S, Le Naour R. Impact of aging on inflammatory and immune responses during elastin peptide-induced murine emphysema. Am J Physiol Lung Cell Mol Physiol 2019; 316:L608-L620. [PMID: 30675803 DOI: 10.1152/ajplung.00402.2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Deterioration of lung functions and degradation of elastin fibers with age are accelerated during chronic obstructive pulmonary disease (COPD). Excessive genesis of soluble elastin peptides (EP) is a key factor in the pathophysiology of COPD. We have previously demonstrated that 6-wk-old mice exhibited emphysematous structural changes associated with proinflammatory immune response after EP instillation. In this study, we investigated the consequences of aging on inflammatory, immune, and histological criteria associated with murine emphysema progression after EP exposure. Young (6 wk old) and elderly (15 mo old) C57BL/6J mice were endotracheally instilled with EP, and, at various time points after treatment, the inflammatory cell profiles from bronchoalveolar lavage fluids (BALF) and the T-lymphocyte phenotypes, at local and systemic levels, were analyzed by flow cytometry. Lungs were also prepared to allow morphological and histological analysis by confocal microscopy. Elderly mice exhibited an earlier development of pulmonary emphysema, characterized by an increase of the inflammatory and lymphocytic infiltrates, extracellular matrix breakdown, and airspace enlargement compared with young mice. This age-dependent parenchymal tissue remodeling was associated with an increase of the matrix metalloproteinase expressions and desmosine levels in BALF and/or sera of EP-treated mice. In addition, both the proportion of CD4+CD28- and CD8+CD28- T cells in the tissues of EP-treated mice and the interferon-γ levels in the EP-specific memory T-cell clones were significantly higher in elderly versus younger mice. This study demonstrates that aging accelerates emphysema development and that this effect is linked to increased EP production and their effects on inflammatory and immune response.
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Affiliation(s)
- Alexandre Pierre
- EA 4683, SFR CAP-Santé, Université de Reims Champagne-Ardenne , Reims , France
| | - Flora Lemaire
- EA 4683, SFR CAP-Santé, Université de Reims Champagne-Ardenne , Reims , France
| | | | - Sandra Audonnet
- Plateau Technique de Cytométrie en Flux URCACyt, Plateforme Santé, Université de Reims Champagne-Ardenne , Reims , France
| | | | - Richard Le Naour
- EA 4683, SFR CAP-Santé, Université de Reims Champagne-Ardenne , Reims , France.,Plateau Technique de Cytométrie en Flux URCACyt, Plateforme Santé, Université de Reims Champagne-Ardenne , Reims , France
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Lee SH, Lee PH, Kim BG, Hong J, Jang AS. Annexin A5 Protein as a Potential Biomarker for the Diagnosis of Asthma. Lung 2018; 196:681-689. [PMID: 30182154 DOI: 10.1007/s00408-018-0159-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 08/30/2018] [Indexed: 12/29/2022]
Abstract
PURPOSE Annexin A5 (ANXA5) has a potential role in cellular signal transduction, inflammation, and fibrosis. However, the exact role of ANXA5 in asthma remains to be clarified. The aims of the present study were to investigate ANXA5 protein expression in a mouse model of asthma and pollutant exposure and to elucidate the relationships between clinical variables and plasma ANXA5 levels in patients with asthma. METHODS A murine model of asthma induced by ovalbumin (OVA) and titanium dioxide (TiO2) nanoparticles has been established using BALB/c mice, and we examined ANXA5 expression and lung fibrosis using this model. Moreover, we also compared ANXA5 plasma levels in patients with controlled vs. exacerbated asthma. RESULTS ANXA5 protein levels were lower in lung tissue from OVA + OVA mice than in control mice. Lung ANXA5, connective tissue growth factor (CTGF), and transforming growth factor β1 (TGF-β1) protein levels were higher in OVA + TiO2-exposed mice than in control or OVA + OVA mice. Although Dermatophagoides pteronyssinus (Derp1) treatment increased lung ANXA5 protein levels in MRC-5 cells and A549 epithelial cells, it decreased lung ANXA5 levels in NHBE cells. Treatment with TiO2 nanoparticles increased lung ANXA5, CTGF, and TGF-β1 protein levels in MRC-5 cells, A549 epithelial cells, and NHBE cells. Plasma ANXA5 levels were lower in asthmatic patients than in healthy controls, and they were significantly enriched in patients with exacerbated asthma compared with those with controlled asthma (P < 0.05). ANXA5 levels were correlated with pulmonary function as assessed by spirometry. CONCLUSION Our results imply that ANXA5 plays a potential role in asthma pathogenesis and may be a promising marker for exacerbated bronchial asthma and exposure to air pollutants.
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Affiliation(s)
- Sun-Hye Lee
- Division of Respiratory and Allergy, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, Gyeonggi-do, 14584, Republic of Korea
| | - Pureun-Haneul Lee
- Division of Respiratory and Allergy, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, Gyeonggi-do, 14584, Republic of Korea
| | - Byeong-Gon Kim
- Division of Respiratory and Allergy, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, Gyeonggi-do, 14584, Republic of Korea
| | - Jisu Hong
- Division of Respiratory and Allergy, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, Gyeonggi-do, 14584, Republic of Korea
| | - An-Soo Jang
- Division of Respiratory and Allergy, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, 170 Jomaru-ro, Wonmi-gu, Bucheon, Gyeonggi-do, 14584, Republic of Korea.
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8
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Burgmaier M, Reith S, Schurgers L, Kahles F, Marx N, Reutelingsperger C. Circulating annexin A5 levels are associated with carotid intima-media thickness but not coronary plaque composition. Diab Vasc Dis Res 2017; 14:415-422. [PMID: 28592134 DOI: 10.1177/1479164117710392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Annexin A5 (anxA5) is involved in processes which are crucial in atherogenesis. However, anxA5's relationship with atherosclerotic lesion extension and plaque composition in high-risk patients with type 2 diabetes remains unclear. Thus, we characterized the association between circulating anxA5 levels with atherosclerotic burden and coronary plaque composition in diabetes mellitus patients. METHODS Intima-media thickness was determined in 96 diabetes mellitus patients with stable coronary artery disease. Furthermore, intracoronary optical coherence tomography was performed in 106 lesions to determine plaque composition. RESULTS AnxA5 plasma levels of patients with intima-media thickening were higher (3.49 ± 2.19 ng/mL) compared to patients with normal intima-media thickness (2.24 ± 1.67 ng/mL, p = 0.002). Furthermore, anxA5 was associated with intima-media thickening on univariable [odds ratio = 1.445 (1.106-1.889), p = 0.007] and multivariable [odds ratio = 1.643 (1.166-2.314), p = 0.005] logistic regression analysis when adjusted for multiple cardiovascular risk factors and biomarkers. Furthermore, receiver operating characteristic analysis demonstrated that anxA5 predicted intima-media thickening with low-moderate diagnostic efficiency [area under the curve = 0.700 (0.592-0.808)]. In contrast, there was no association between anxA5 levels and coronary plaque composition as assessed by optical coherence tomography including the presence of lipid, calcified, fibrous plaque or the minimal thickness of the fibrous cap overlying the necrotic lipid core ( p = ns). CONCLUSION Circulating anxA5 levels are associated with carotid intima-media thickness but not coronary plaque composition in high-risk patients with diabetes mellitus.
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Affiliation(s)
- Mathias Burgmaier
- 1 Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Sebastian Reith
- 1 Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Leon Schurgers
- 2 Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Florian Kahles
- 1 Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Nikolaus Marx
- 1 Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Aachen, Germany
| | - Chris Reutelingsperger
- 2 Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
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9
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Fond AM, Ravichandran KS. Clearance of Dying Cells by Phagocytes: Mechanisms and Implications for Disease Pathogenesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 930:25-49. [PMID: 27558816 PMCID: PMC6721615 DOI: 10.1007/978-3-319-39406-0_2] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The efficient clearance of apoptotic cells is an evolutionarily conserved process crucial for homeostasis in multicellular organisms. The clearance involves a series of steps that ultimately facilitates the recognition of the apoptotic cell by the phagocytes and the subsequent uptake and processing of the corpse. These steps include the phagocyte sensing of "find-me" signals released by the apoptotic cell, recognizing "eat-me" signals displayed on the apoptotic cell surface, and then intracellular signaling within the phagocyte to mediate phagocytic cup formation around the corpse and corpse internalization, and the processing of the ingested contents. The engulfment of apoptotic cells by phagocytes not only eliminates debris from tissues but also produces an anti-inflammatory response that suppresses local tissue inflammation. Conversely, impaired corpse clearance can result in loss of immune tolerance and the development of various inflammation-associated disorders such as autoimmunity, atherosclerosis, and airway inflammation but can also affect cancer progression. Recent studies suggest that the clearance process can also influence antitumor immune responses. In this review, we will discuss how apoptotic cells interact with their engulfing phagocytes to generate important immune responses, and how modulation of such responses can influence pathology.
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Affiliation(s)
- Aaron M Fond
- Center for Cell Clearance, and the Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, 22908, USA
| | - Kodi S Ravichandran
- Center for Cell Clearance, and the Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, 22908, USA.
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10
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Choudhury G, MacNee W. Role of Inflammation and Oxidative Stress in the Pathology of Ageing in COPD: Potential Therapeutic Interventions. COPD 2016; 14:122-135. [DOI: 10.1080/15412555.2016.1214948] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gourab Choudhury
- MRC Centre for Inflammation Research, Queens Medical Research Institute, 47 little France Crescent Edinburgh, United Kingdom
| | - William MacNee
- MRC Centre for Inflammation Research, Queens Medical Research Institute, 47 little France Crescent Edinburgh, United Kingdom
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11
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Katsura Y, Harada N, Harada S, Ishimori A, Makino F, Ito J, Kamachi F, Okumura K, Akiba H, Atsuta R, Takahashi K. Characteristics of alveolar macrophages from murine models of OVA-induced allergic airway inflammation and LPS-induced acute airway inflammation. Exp Lung Res 2016; 41:370-82. [PMID: 26151756 DOI: 10.3109/01902148.2015.1044137] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Macrophages include the classically activated pro-inflammatory M1 macrophages (M1s) and alternatively activated anti-inflammatory M2 macrophages (M2s). The M1s are activated by both interferon-γ and Toll-like receptor ligands, including lipopolysaccharide (LPS), and have potent pro-inflammatory activity. In contrast, Th2 cytokines activate the M2s, which are involved in the immune response to parasites, promotion of tissue remodeling, and immune regulatory functions. Although alveolar macrophages (AMs) play an essential role in the pulmonary immune system, little is known about their phenotypes. METHODS Quantitative reverse transcription polymerase chain reaction and flow cytometry were used to define the characteristics of alveolar macrophages derived from untreated naïve mice and from murine models of both ovalbumin (OVA)-induced allergic airway inflammation and LPS-induced acute airway inflammation. AMs were co-cultured with CD4(+) T cells and were pulsed with tritiated thymidine to assess proliferative responses. RESULTS We characterized in detail murine AMs and found that these cells were not completely consistent with the current M1 versus M2-polarization model. OVA-induced allergic and LPS-induced acute airway inflammation promoted the polarization of AMs towards the current M2-skewed and M1-skewed phenotypes, respectively. Moreover, our data also show that CD11c(+) CD11b(+) AMs from the LPS-treated mice play a regulatory role in antigen-specific T-cell proliferation in vitro. CONCLUSIONS These characteristics of AMs depend on the incoming pathogens they encounter and on the phase of inflammation and do not correspond to the current M1 versus M2-polarization model. These findings may facilitate an understanding of their contributions to the pulmonary immune system in airway inflammation.
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Affiliation(s)
- Yoko Katsura
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan.,b 2 Research Institute for Diseases of Old Ages , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan.,c 3 Department of Immunology , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Norihiro Harada
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan.,b 2 Research Institute for Diseases of Old Ages , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan.,c 3 Department of Immunology , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Sonoko Harada
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan.,c 3 Department of Immunology , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Ayako Ishimori
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Fumihiko Makino
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Jun Ito
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Fumitaka Kamachi
- c 3 Department of Immunology , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Ko Okumura
- d 4 Atopy (Allergy) Research Center , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Hisaya Akiba
- c 3 Department of Immunology , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Ryo Atsuta
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
| | - Kazuhisa Takahashi
- a 1 Department of Respiratory Medicine , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan.,b 2 Research Institute for Diseases of Old Ages , Juntendo University Faculty of Medicine and Graduate School of Medicine , Tokyo, Japan
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12
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Chrusciel S, Zysman M, Caramelle P, Tiendrebeogo A, Baskara I, Le Gouvello S, Chabot F, Giraudier S, Boczkowski J, Boyer L. Lack of Transcription Factor p53 Exacerbates Elastase-Induced Emphysema in Mice. Am J Respir Cell Mol Biol 2016; 54:188-99. [PMID: 26106979 DOI: 10.1165/rcmb.2014-0375oc] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The transcription factor p53 is overexpressed in the lung of patients with emphysema, but it remains unclear if it has a deleterious or protective effect in disease progression. We investigated the role of p53 in the elastase-induced emphysema model and the molecular underlining mechanisms. Wild-type (WT) and p53(-/-) mice were instilled with pancreatic porcine elastase. We quantified emphysema (morphometric analysis), chemokine (C-C motif) ligand 2 (CCL2), and TNF-α in bronchoalveolar lavage (BAL) (ELISA), oxidative stress markers [heme oxygenase 1 (HO1), NAD(P)H dehydrogenase quinone 1 (NQO1), and quantitative RT-PCR], matrix metalloproteinase 12 (MMP12) expression, and macrophage apoptosis (cleaved caspase-3, immunofluorescence). p53 gene expression was up-regulated in the lung of elastase-instilled mice. p53 deletion aggravated elastase-induced emphysema severity, pulmonary inflammation (macrophage and neutrophil numbers and CCL2 and TNF-α levels in BAL), and lung oxidative stress. These findings, except for the increase in CCL2, were reproduced in WT mice transplanted with p53(-/-) bone marrow cells. The increased number of macrophages in p53(-/-) mice was not a consequence of reduced apoptosis or an excess of chemotaxis toward CCL2. Macrophage expression of MMP12 was higher in p53(-/-) mice compared with WT mice after elastase instillation. These findings provide evidence that p53(-/-) mice and WT mice grafted with p53(-/-) bone marrow cells are more prone to developing elastase-induced emphysema, supporting a protective role of p53, and more precisely p53 expressed in macrophages, against emphysema development. The pivotal role played by macrophages in this phenomenon may involve the MMP12-TNF-α pathway.
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Affiliation(s)
- Sandra Chrusciel
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France
| | - Maéva Zysman
- 3 Département de Pneumologie, Hôpitaux de Brabois and.,4 Equipe d'accueil 7298 INGRES, CHU de Nancy, Vandoeuvre-les-Nancy, France.,5 Université de Lorraine, Nancy, France
| | - Philippe Caramelle
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France
| | - Arnaud Tiendrebeogo
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France
| | - Indoumady Baskara
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France
| | - Sabine Le Gouvello
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France.,6 Service d'Immunologie Biologique
| | - François Chabot
- 3 Département de Pneumologie, Hôpitaux de Brabois and.,4 Equipe d'accueil 7298 INGRES, CHU de Nancy, Vandoeuvre-les-Nancy, France.,5 Université de Lorraine, Nancy, France
| | - Stéphane Giraudier
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,7 Service d'Hématologie Biologique, and
| | - Jorge Boczkowski
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France.,8 Centre Hospitalier Intercommunal, Service de Pneumologie et Pathologie Professionnelle, Créteil, France
| | - Laurent Boyer
- 1 Faculté de Médecine, Université Paris-Est, UMR S955, Créteil, France.,2 Inserm U955, Equipe 04, Créteil, France.,9 Service de Physiologie Explorations Fonctionnelles, AP-HP, Hôpital Henri Mondor, DHU A-TVB, Créteil, France; and
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13
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Sellami M, Meghraoui-Kheddar A, Terryn C, Fichel C, Bouland N, Diebold MD, Guenounou M, Héry-Huynh S, Le Naour R. Induction and regulation of murine emphysema by elastin peptides. Am J Physiol Lung Cell Mol Physiol 2015; 310:L8-23. [PMID: 26519205 DOI: 10.1152/ajplung.00068.2015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 10/29/2015] [Indexed: 11/22/2022] Open
Abstract
Emphysema is the major component of chronic obstructive pulmonary disease (COPD). During emphysema, elastin breakdown in the lung tissue originates from the release of large amounts of elastase by inflammatory cells. Elevated levels of elastin-derived peptides (EP) reflect massive pulmonary elastin breakdown in COPD patients. Only the EP containing the GXXPG conformational motif with a type VIII β-turn are elastin receptor ligands inducing biological activities. In addition, the COOH-terminal glycine residue of the GXXPG motif seems a prerequisite to the biological activity. In this study, we endotracheally instilled C57BL/6J mice with GXXPG EP and/or COOH-terminal glycine deleted-EP whose sequences were designed by molecular dynamics and docking simulations. We investigated their effect on all criteria associated with the progression of murine emphysema. Bronchoalveolar lavages were recovered to analyze cell profiles by flow cytometry and lungs were prepared to allow morphological and histological analysis by immunostaining and confocal microscopy. We observed that exposure of mice to EP elicited hallmark features of emphysema with inflammatory cell accumulation associated with increased matrix metalloproteinases and desmosine expression and of remodeling of parenchymal tissue. We also identified an inactive COOH-terminal glycine deleted-EP that retains its binding-activity to EBP and that is able to inhibit the in vitro and in vivo activities of emphysema-inducing EP. This study demonstrates that EP are key actors in the development of emphysema and that they represent pharmacological targets for an alternative treatment of emphysema based on the identification of EP analogous antagonists by molecular modeling studies.
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Affiliation(s)
- Mehdi Sellami
- EA4683, SFR CAP-Santé, Université de Reims Champagne-Ardenne, Reims, France
| | | | - Christine Terryn
- Plateforme d'Imagerie Cellulaire et Tissulaire, SFR CAP-Santé, URCA, Reims, France; and
| | - Caroline Fichel
- Laboratoire d'Anatomie et de Cytologie Pathologiques, CHU R. Debré, Reims, France
| | - Nicole Bouland
- Laboratoire d'Anatomie et de Cytologie Pathologiques, CHU R. Debré, Reims, France
| | | | - Moncef Guenounou
- EA4683, SFR CAP-Santé, Université de Reims Champagne-Ardenne, Reims, France
| | | | - Richard Le Naour
- EA4683, SFR CAP-Santé, Université de Reims Champagne-Ardenne, Reims, France;
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14
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Prakash YS, Tschumperlin DJ, Stenmark KR. Coming to terms with tissue engineering and regenerative medicine in the lung. Am J Physiol Lung Cell Mol Physiol 2015; 309:L625-38. [PMID: 26254424 DOI: 10.1152/ajplung.00204.2015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/04/2015] [Indexed: 01/10/2023] Open
Abstract
Lung diseases such as emphysema, interstitial fibrosis, and pulmonary vascular diseases cause significant morbidity and mortality, but despite substantial mechanistic understanding, clinical management options for them are limited, with lung transplantation being implemented at end stages. However, limited donor lung availability, graft rejection, and long-term problems after transplantation are major hurdles to lung transplantation being a panacea. Bioengineering the lung is an exciting and emerging solution that has the ultimate aim of generating lung tissues and organs for transplantation. In this article we capture and review the current state of the art in lung bioengineering, from the multimodal approaches, to creating anatomically appropriate lung scaffolds that can be recellularized to eventually yield functioning, transplant-ready lungs. Strategies for decellularizing mammalian lungs to create scaffolds with native extracellular matrix components vs. de novo generation of scaffolds using biocompatible materials are discussed. Strengths vs. limitations of recellularization using different cell types of various pluripotency such as embryonic, mesenchymal, and induced pluripotent stem cells are highlighted. Current hurdles to guide future research toward achieving the clinical goal of transplantation of a bioengineered lung are discussed.
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Affiliation(s)
- Y S Prakash
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota;
| | - Daniel J Tschumperlin
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota; Division of Pulmonary Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Kurt R Stenmark
- Department of Pediatrics, University of Colorado, Aurora, Colorado
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15
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Sasaki M, Chubachi S, Kameyama N, Sato M, Haraguchi M, Miyazaki M, Takahashi S, Betsuyaku T. Evaluation of cigarette smoke-induced emphysema in mice using quantitative micro-computed tomography. Am J Physiol Lung Cell Mol Physiol 2015; 308:L1039-45. [PMID: 25820526 DOI: 10.1152/ajplung.00366.2014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 03/25/2015] [Indexed: 11/22/2022] Open
Abstract
Chronic cigarette smoke (CS) exposure provokes variable changes in the lungs, and emphysema is an important feature of chronic obstructive pulmonary disease. The usefulness of micro-computed tomography (CT) to assess emphysema in different mouse models has been investigated, but few studies evaluated the dynamic structural changes in a CS-induced emphysema mouse model. A novel micro-CT technique with respiratory and cardiac gating has resulted in high-quality images that enable processing for further quantitative and qualitative analyses. Adult female C57BL/6J mice were repeatedly exposed to mainstream CS, and micro-CT scans were performed at 0, 4, 12, and 20 wk. Emphysema was also histologically quantified at each time point. Air-exposed mice and mice treated with intratracheal elastase served as controls and comparisons, respectively. End-expiratory lung volume, corresponding to functional residual volume, was defined as the calculated volume at the phase of end-expiration, and it evaluated air trapping. The end-expiratory lung volumes of CS-exposed mice were significantly larger than those of air controls at 12 and 20 wk, which was in line with alveolar enlargement and destruction by histological quantification. However, CS exposure neither increased low attenuation volume nor decreased the average lung CT value at any time point, unlike the elastase-instilled emphysema model. CS-exposed mice had rather higher average lung CT values at 4 and 12 wk. This is the first study characterizing a CS-induced emphysema model on micro-CT over time in mice. Moreover, these findings extend our understanding of the distinct pathophysiology of CS-induced emphysema in mice.
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Affiliation(s)
- Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Minako Sato
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mizuha Haraguchi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Masaki Miyazaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Saeko Takahashi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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16
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Voelkel NF. Pulmonary vascular diseases: in search of a hub among the spokes-an exercise in hypothesis generation. Pulm Circ 2014; 3:723-7. [PMID: 25006390 DOI: 10.1086/674771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Norbert F Voelkel
- Victoria Johnson Laboratory for Lung Research, Virginia Commonwealth University, Richmond, Virginia, USA
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17
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Abstract
In healthy individuals, billions of cells die by apoptosis each day. Clearance of these apoptotic cells, termed "efferocytosis," must be efficient to prevent secondary necrosis and the release of proinflammatory cell contents that disrupt tissue homeostasis and potentially foster autoimmunity. During inflammation, most apoptotic cells are cleared by macrophages; the efferocytic process actively induces a macrophage phenotype that favors tissue repair and suppression of inflammation. Several chronic lung diseases, particularly airways diseases such as chronic obstructive lung disease, asthma, and cystic fibrosis, are characterized by an increased lung burden of uningested apoptotic cells. Alveolar macrophages from individuals with these chronic airways diseases have decreased efferocytosis relative to alveolar macrophages from healthy subjects. These two findings have led to the hypothesis that impaired apoptotic cell clearance may contribute causally to sustained lung inflammation and that therapies to enhance efferocytosis might be beneficial. This review of the English-language scientific literature (2006 to mid-2012) explains how such existing therapies as corticosteroids, statins, and macrolides may act in part by augmenting apoptotic cell clearance. However, efferocytosis can also impede host defenses against lung infection. Thus, determining whether novel therapies to augment efferocytosis should be developed and in whom they should be used lies at the heart of efforts to differentiate specific phenotypes within complex chronic lung diseases to provide appropriately personalized therapies.
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Affiliation(s)
| | - Jeffrey L Curtis
- Graduate Program in Immunology, VA Ann Arbor Healthcare System, Ann Arbor, MI; Division of Pulmonary and Critical Care Medicine, VA Ann Arbor Healthcare System, Ann Arbor, MI; Department of Internal Medicine, University of Michigan Health System; and the Pulmonary and Critical Care Medicine Section, VA Ann Arbor Healthcare System, Ann Arbor, MI.
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18
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Craig JM, Scott AL, Mitzner W. Elastase-coupled beads as a tool for characterizing localized alveolar tissue destruction associated with the onset of emphysema. J Appl Physiol (1985) 2013; 114:1637-44. [PMID: 23558388 PMCID: PMC3680828 DOI: 10.1152/japplphysiol.00026.2013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 03/27/2013] [Indexed: 11/22/2022] Open
Abstract
Intratracheal elastase challenge of laboratory animals has long been established as a model for observing the physiological and morphological changes that result from alveolar destruction, the hallmark of emphysema. However, instillation of elastase suspended in buffer results in widespread inflammation and variable emphysematous lesions, which has made the identification of specific cellular and molecular events associated with the onset of emphysema difficult to define. Here we establish a bead-based elastase delivery system that induces localized tissue destruction, a key event in the initiation of emphysema. Elastase was coupled to bisacrylamide beads, which were shown to retain enzymatic activity prior to intratracheal administration in mice. C57BL/6 mice were given a single dose of 40,000 beads, which became distributed throughout the small airways and parenchyma of the lung. Elastase-coupled beads resulted in a quantifiable loss of alveolar tissue immediately surrounding the beads, an effect that was not observed with beads that lacked protein altogether or with beads containing elastase inactivated by an irreversible inhibitor. Furthermore, beads bound with active elastase elicited local recruitment of mononuclear cells, including macrophages, and polymorphonuclear neutrophils to the site of bead deposition, a feature consistent with the cellular infiltration observed following conventional solubilized elastase challenges. This work identifies a novel bead-based enzyme delivery system that also extends the elastase model of emphysema to permit the characterization of mechanisms that drive alveolar surface area loss following elastin degradation in focal emphysematous lesions.
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Affiliation(s)
- J. M. Craig
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; and
| | - A. L. Scott
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; and
| | - W. Mitzner
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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