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da Palma RK, Fratini P, Schiavo Matias GS, Cereta AD, Guimarães LL, Anunciação ARDA, de Oliveira LVF, Farre R, Miglino MA. Equine lung decellularization: a potential approach for in vitro modeling the role of the extracellular matrix in asthma. J Tissue Eng 2018; 9:2041731418810164. [PMID: 30450188 PMCID: PMC6236489 DOI: 10.1177/2041731418810164] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 10/10/2018] [Indexed: 12/22/2022] Open
Abstract
Contrary to conventional research animals, horses naturally develop asthma, a
disease in which the extracellular matrix of the lung plays a significant role.
Hence, the horse lung extracellular matrix appears to be an ideal candidate
model for in vitro studying the mechanisms and potential treatments for asthma.
However, so far, such model to study cell–extracellular matrix interactions in
asthma has not been developed. The aim of this study was to establish a protocol
for equine lung decellularization that maintains the architecture of the
extracellular matrix and could be used in the future as an in vitro model for
therapeutic treatment in asthma. For this the equine lungs were decellularized
by sodium dodecyl sulfate detergent perfusion at constant gravitational pressure
of 30 cmH2O. Lung scaffolds were assessed by immunohistochemistry
(collagen I, III, IV, laminin, and fibronectin), scanning electron microscopy,
and DNA quantification. Their mechanical property was assessed by measuring lung
compliance using the super-syringe technique. The optimized protocol of lung
equine decellularization was effective to remove cells (19.8 ng/mg) and to
preserve collagen I, III, IV, laminin, and fibronectin. Moreover, scanning
electron microscopy analysis demonstrated maintained microscopic lung
structures. The decellularized lungs presented lower compliance compared to
native lung. In conclusion we described a reproducible decellularization
protocol that can produce an acellular equine lung feasible for the future
development of novel treatment strategies in asthma.
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Affiliation(s)
- Renata Kelly da Palma
- Post Graduate Program in Science of Rehabilitation, University Nove de Julho (UNINOVE), São Paulo, Brazil.,Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Paula Fratini
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Gustavo Sá Schiavo Matias
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Andressa Daronco Cereta
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Leticia Lopes Guimarães
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | | | | | - Ramon Farre
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Maria Angelica Miglino
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
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Asthma "of horses and men"--how can equine heaves help us better understand human asthma immunopathology and its functional consequences? Mol Immunol 2014; 66:97-105. [PMID: 25547716 DOI: 10.1016/j.molimm.2014.12.005] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/30/2014] [Accepted: 12/07/2014] [Indexed: 12/20/2022]
Abstract
Animal models have been studied to unravel etiological, immunopathological, and genetic attributes leading to asthma. However, while experiments in which the disease is artificially induced have helped discovering biological and molecular pathways leading to allergic airway inflammation, their contribution to the understanding of the causality of the disease has been more limited. Horses naturally suffer from an asthma-like condition called "heaves" which presents sticking similarities with human asthma. It is characterized by reversible airway obstruction, airway neutrophilic inflammation, and a predominant Th2 immune response. This model allows one to investigate the role of neutrophils in asthma, which remains contentious, the regulation of chronic neutrophilic inflammation, and their possible implication in pulmonary allergic responses. Furthermore, the pulmonary remodeling features in heaves closely resemble those of human asthma, which makes this model unique to investigate the kinetics, reversibility, as well as the physiological consequences of tissue remodeling. In conclusion, heaves and asthma share common clinical presentation and also important immunological and tissue remodeling features. This makes heaves an ideal model for the discovery of novel pathways implicated in the asthmatic inflammation and associated tissue remodeling.
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Mo J, Tymiak AA, Chen G. Structural mass spectrometry in biologics discovery: advances and future trends. Drug Discov Today 2012; 17:1323-30. [DOI: 10.1016/j.drudis.2012.07.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 06/11/2012] [Accepted: 07/13/2012] [Indexed: 11/16/2022]
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Gonzales M, Fratianni C, Mamillapali C, Khardori R. Immunotherapy in miscellaneous medical disorders Graves ophthalmopathy, asthma, and regional painful syndrome. Med Clin North Am 2012; 96:635-54, xi. [PMID: 22703859 DOI: 10.1016/j.mcna.2012.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In Graves ophthalmopathy, immunotherapy is offering an opportunity of reducing bad outcomes that lead to disfigurement and impairment of vision. These therapies are not perfect; however, we now have a chance to achieve better outcomes. In asthma, immune therapy using passive immunity targeting key proinflammatory cytokine/chemokines and medications of their effects has opened an avenue of research into a safe and durable therapy. Omalizumab appears to be safe and effective in clinical use. In regional pain syndrome, immune mechanisms may be involved in sustaining long-standing pain, and IVIG may moderate pain sensitivity by reducing immune activation.
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Affiliation(s)
- Michael Gonzales
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Strelitz Center for Diabetes and Endocrine Disorders, Eastern Virginia Medical School, 855 West Brambleton Avenue, Norfolk, VA 23510, USA
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Doherty TA, Croft M. Therapeutic potential of targeting TNF/TNFR family members in asthma. Immunotherapy 2011; 3:919-21. [PMID: 21843077 DOI: 10.2217/imt.11.88] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Zhang Q, Willison LN, Tripathi P, Sathe SK, Roux KH, Emmett MR, Blakney GT, Zhang HM, Marshall AG. Epitope mapping of a 95 kDa antigen in complex with antibody by solution-phase amide backbone hydrogen/deuterium exchange monitored by Fourier transform ion cyclotron resonance mass spectrometry. Anal Chem 2011; 83:7129-36. [PMID: 21861454 PMCID: PMC3173601 DOI: 10.1021/ac201501z] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The epitopes of a homohexameric food allergen protein, cashew Ana o 2, identified by two monoclonal antibodies, 2B5 and 1F5, were mapped by solution-phase amide backbone H/D exchange (HDX) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FTICR MS) and the results were compared to previous mapping by immunological and mutational analyses. Antibody 2B5 defines a conformational epitope, and 1F5 defines a linear epitope. Intact murine IgG antibodies were incubated with recombinant Ana o 2 (rAna o 2) to form antigen-monoclonal antibody (Ag-mAb) complexes. mAb-complexed and uncomplexed (free) rAna o 2 were then subjected to HDX. HDX instrumentation and automation were optimized to achieve high sequence coverage by protease XIII digestion. The regions protected from H/D exchange upon antibody binding overlap and thus confirm the previously identified epitope-bearing segments: the first extension of HDX monitored by mass spectrometry to a full-length antigen-antibody complex in solution.
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Affiliation(s)
- Qian Zhang
- Department Chemistry & Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, FL 32306
| | - LeAnna N. Willison
- Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306
| | - Pallavi Tripathi
- Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306
| | - Shridhar K. Sathe
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL 32306
| | - Kenneth H. Roux
- Department of Biological Science and Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306
| | - Mark R. Emmett
- Department Chemistry & Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, FL 32306
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State Universitiy, 1800 E. Paul Dirac Drive, Tallahassee, FL 323010-4005
| | - Greg T. Blakney
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State Universitiy, 1800 E. Paul Dirac Drive, Tallahassee, FL 323010-4005
| | - Hui-Min Zhang
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State Universitiy, 1800 E. Paul Dirac Drive, Tallahassee, FL 323010-4005
| | - Alan G. Marshall
- Department Chemistry & Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee, FL 32306
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State Universitiy, 1800 E. Paul Dirac Drive, Tallahassee, FL 323010-4005
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