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Bax DV, Nair M, Weiss AS, Farndale RW, Best SM, Cameron RE. Tailoring the biofunctionality of collagen biomaterials via tropoelastin incorporation and EDC-crosslinking. Acta Biomater 2021; 135:150-163. [PMID: 34454082 DOI: 10.1016/j.actbio.2021.08.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/13/2021] [Accepted: 08/18/2021] [Indexed: 11/17/2022]
Abstract
Recreating the cell niche of virtually all tissues requires composite materials fabricated from multiple extracellular matrix (ECM) macromolecules. Due to their wide tissue distribution, physical attributes and purity, collagen, and more recently, tropoelastin, represent two appealing ECM components for biomaterials development. Here we blend tropoelastin and collagen, harnessing the cell-modulatory properties of each biomolecule. Tropoelastin was stably co-blended into collagen biomaterials and was retained after EDC-crosslinking. We found that human dermal fibroblasts (HDF), rat glial cells (Rugli) and HT1080 fibrosarcoma cells ligate to tropoelastin via EDTA-sensitive and EDTA-insensitive receptors or do not ligate with tropoelastin, respectively. These differing elastin-binding properties allowed us to probe the cellular response to the tropoelastin-collagen composites assigning specific bioactivity to the collagen and tropoelastin component of the composite material. Tropoelastin addition to collagen increased total Rugli cell adhesion, spreading and proliferation. This persisted with EDC-crosslinking of the tropoelastin-collagen composite. Tropoelastin addition did not affect total HDF and HT1080 cell adhesion; however, it increased the contribution of cation-independent adhesion, without affecting the cell morphology or, for HT1080 cells, proliferation. Instead, EDC-crosslinking dictated the HDF and HT1080 cellular response. These data show that a tropoelastin component dominates the response of cells that possess non-integrin based tropoelastin receptors. EDC modification of the collagen component directs cell function when non-integrin tropoelastin receptors are not crucial for cell activity. Using this approach, we have assigned the biological contribution of each component of tropoelastin-collagen composites, allowing informed biomaterial design for directed cell function via more physiologically relevant mechanisms. STATEMENT OF SIGNIFICANCE: Biomaterials fabricated from multiple extracellular matrix (ECM) macromolecules are required to fully recreate the native tissue niche where each ECM macromolecule engages with a specific repertoire of cell-surface receptors. Here we investigate combining tropoelastin with collagen as they interact with cells via different receptors. We identified specific cell lines, which associate with tropoelastin via distinct classes of cell-surface receptor. These showed that tropoelastin, when combined with collagen, altered the cell behaviour in a receptor-usage dependent manner. Integrin-mediated tropoelastin interactions influenced cell proliferation and non-integrin receptors influenced cell spreading and proliferation. These data shed light on the interplay between biomaterial macromolecular composition, cell surface receptors and cell behaviour, advancing bespoke materials design and providing functionality to specific cell populations.
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Affiliation(s)
- Daniel V Bax
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom; Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, United Kingdom.
| | - Malavika Nair
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom
| | - Anthony S Weiss
- Life and Environmental Sciences, University of Sydney, NSW, 2006, Australia; Charles Perkins Centre, University of Sydney, NSW, 2006, Australia; Sydney Nano Institute, University of Sydney, NSW, 2006, Australia
| | - Richard W Farndale
- Department of Biochemistry, University of Cambridge, Downing Site, Cambridge, CB2 1QW, United Kingdom
| | - Serena M Best
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom
| | - Ruth E Cameron
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom
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2
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Schmelzer CEH, Hedtke T, Heinz A. Unique molecular networks: Formation and role of elastin cross-links. IUBMB Life 2019; 72:842-854. [PMID: 31834666 DOI: 10.1002/iub.2213] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/30/2019] [Indexed: 01/11/2023]
Abstract
Elastic fibers are essential assemblies of vertebrates and confer elasticity and resilience to various organs including blood vessels, lungs, skin, and ligaments. Mature fibers, which comprise a dense and insoluble elastin core and a microfibrillar mantle, are extremely resistant toward intrinsic and extrinsic influences and maintain elastic function over the human lifespan in healthy conditions. The oxidative deamination of peptidyl lysine to peptidyl allysine in elastin's precursor tropoelastin is a crucial posttranslational step in their formation. The modification is catalyzed by members of the family of lysyl oxidases and the starting point for subsequent manifold condensation reactions that eventually lead to the highly cross-linked elastomer. This review summarizes the current understanding of the formation of cross-links within and between the monomer molecules, the molecular sites, and cross-link types involved and the pathological consequences of abnormalities in the cross-linking process.
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Affiliation(s)
- Christian E H Schmelzer
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany.,Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Tobias Hedtke
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany.,Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Andrea Heinz
- Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark
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3
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Vindin H, Mithieux SM, Weiss AS. Elastin architecture. Matrix Biol 2019; 84:4-16. [DOI: 10.1016/j.matbio.2019.07.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 07/08/2019] [Accepted: 07/08/2019] [Indexed: 11/15/2022]
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Miekus N, Luise C, Sippl W, Baczek T, Schmelzer CEH, Heinz A. MMP-14 degrades tropoelastin and elastin. Biochimie 2019; 165:32-39. [PMID: 31278967 DOI: 10.1016/j.biochi.2019.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/01/2019] [Indexed: 12/14/2022]
Abstract
Matrix metalloproteinases are a class of enzymes, which degrade extracellular matrix components such as collagens, elastin, laminin or fibronectin. So far, four matrix metalloproteinases have been shown to degrade elastin and its precursor tropoelastin, namely matrix metalloproteinase-2, -7, -9 and -12. This study focuses on investigating the elastinolytic capability of membrane-type 1 matrix metalloproteinase, also known as matrix metalloproteinase-14. We digested recombinant human tropoelastin and human skin elastin with matrix metalloproteinase-14 and analyzed the peptide mixtures using complementary mass spectrometric techniques and bioinformatics tools. The results and additional molecular docking studies show that matrix metalloproteinase-14 cleaves tropoelastin as well as elastin. While tropoelastin was well degraded, fewer cleavages occurred in the highly cross-linked mature elastin. The study also provides insights into the cleavage preferences of the enzyme. Similar to cleavage preferences of matrix metalloproteinases-2, -7, -9 and -12, matrix metalloproteinase-14 prefers small and medium-sized hydrophobic residues including Gly, Ala, Leu and Val at cleavage site P1'. Pro, Gly and Ala were preferably found at P1-P4 and P2'-P4' in both tropoelastin and elastin. Cleavage of mature skin elastin by matrix metalloproteinase-14 released a variety of bioactive elastin peptides, which indicates that the enzyme may play a role in the development and progression of cardiovascular diseases that go along with elastin breakdown.
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Affiliation(s)
- Natalia Miekus
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Department of Pharmaceutical Chemistry, Medical University of Gdańsk, Gdańsk, Poland; Department of Animal and Human Physiology, Faculty of Biology, University of Gdańsk, Gdańsk, Poland
| | - Chiara Luise
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Wolfgang Sippl
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Tomasz Baczek
- Department of Pharmaceutical Chemistry, Medical University of Gdańsk, Gdańsk, Poland
| | - Christian E H Schmelzer
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Andrea Heinz
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Department of Pharmacy, LEO Foundation Center for Cutaneous Drug Delivery, University of Copenhagen, Copenhagen, Denmark.
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Bax DV, Smalley HE, Farndale RW, Best SM, Cameron RE. Cellular response to collagen-elastin composite materials. Acta Biomater 2019; 86:158-170. [PMID: 30586647 DOI: 10.1016/j.actbio.2018.12.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 12/03/2018] [Accepted: 12/21/2018] [Indexed: 10/27/2022]
Abstract
Collagen is used extensively in tissue engineering due to its biocompatibility, near-universal tissue distribution, low cost and purity. However, native tissues are composites that include diverse extracellular matrix components, which influence strongly their mechanical and biological properties. Here, we provide important new findings on the differential regulation, by collagen and elastin, of the bio-response to the composite material. Soluble and insoluble elastin had differing effects on the stiffness and failure strength of the composite films. We established that Rugli cells bind elastin via EDTA-sensitive receptors, whilst HT1080 cells do not. These cells allowed us to probe the contribution of collagen alone (HT1080) and collagen plus elastin (Rugli) to the cellular response. In the presence of elastin, Rugli cell attachment, spreading and proliferation increased, presumably through elastin-binding receptors. By comparison, the attachment and spreading of HT1080 cells was modified by elastin inclusion, but without affecting their proliferation, indicating indirect modulation by elastin of the response of cells to collagen. These new insights highlight that access to elastin dominates the cellular response when elastin-binding receptors are present. In the absence of these receptors, modification of the collagen component and/or physical properties dictate the cellular response. Therefore, we can attribute the contribution of each constituent on the ultimate bioactivity of heterogeneous collagen-composite materials, permitting informed, systematic biomaterials design. STATEMENT OF SIGNIFICANCE: In recent years there has been a desire to replicate the complex extracellular matrix composition of tissues more closely, necessitating the need for composite protein-based materials. In this case both the physical and biochemical properties are altered with the addition of each component, with potential consequences on the cell. To date, the different contributions of each component have not been deconvolved, and instead the cell response to the scaffold as a whole has been observed. Instead, here, we have used specific cell lines, that are sensitive to specific components of an elastin-collagen composite, to resolve the bio-activity of each protein. This has shown that elastin-induced alteration of the collagen component can modulate early stage cell behaviour. By comparison the elastin component directly alters the cell response over the short and long term, but only where appropriate receptors are present on the cell. Due to the widespread use of collagen and elastin, we feel that this data permits, for the first time, the ability to systematically design collagen-composite materials to promote desired cell behaviour with associated advantages for biomaterials fabrication.
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Schräder CU, Heinz A, Majovsky P, Karaman Mayack B, Brinckmann J, Sippl W, Schmelzer CEH. Elastin is heterogeneously cross-linked. J Biol Chem 2018; 293:15107-15119. [PMID: 30108173 DOI: 10.1074/jbc.ra118.004322] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 08/12/2018] [Indexed: 01/30/2023] Open
Abstract
Elastin is an essential vertebrate protein responsible for the elasticity of force-bearing tissues such as those of the lungs, blood vessels, and skin. One of the key features required for the exceptional properties of this durable biopolymer is the extensive covalent cross-linking between domains of its monomer molecule tropoelastin. To date, elastin's exact molecular assembly and mechanical properties are poorly understood. Here, using bovine elastin, we investigated the different types of cross-links in mature elastin to gain insight into its structure. We purified and proteolytically cleaved elastin from a single tissue sample into soluble cross-linked and noncross-linked peptides that we studied by high-resolution MS. This analysis enabled the elucidation of cross-links and other elastin modifications. We found that the lysine residues within the tropoelastin sequence were simultaneously unmodified and involved in various types of cross-links with different other domains. The Lys-Pro domains were almost exclusively linked via lysinonorleucine, whereas Lys-Ala domains were found to be cross-linked via lysinonorleucine, allysine aldol, and desmosine. Unexpectedly, we identified a high number of intramolecular cross-links between lysine residues in close proximity. In summary, we show on the molecular level that elastin formation involves random cross-linking of tropoelastin monomers resulting in an unordered network, an unexpected finding compared with previous assumptions of an overall beaded structure.
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Affiliation(s)
- Christoph U Schräder
- From the Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany
| | - Andrea Heinz
- From the Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany.,the Department of Pharmacy, University of Copenhagen, Copenhagen 2100, Denmark
| | - Petra Majovsky
- the Proteome Analytics Research Group, Leibniz Institute for Plant Biochemistry, Halle (Saale) 06120, Germany
| | - Berin Karaman Mayack
- From the Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany
| | - Jürgen Brinckmann
- the Institute of Virology and Cell Biology, Department of Dermatology, University of Lübeck, Lübeck 23538, Germany, and
| | - Wolfgang Sippl
- From the Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany
| | - Christian E H Schmelzer
- From the Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany, .,the Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale) 06120, Germany
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7
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Duque Lasio ML, Kozel BA. Elastin-driven genetic diseases. Matrix Biol 2018; 71-72:144-160. [PMID: 29501665 DOI: 10.1016/j.matbio.2018.02.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/23/2018] [Accepted: 02/23/2018] [Indexed: 02/08/2023]
Abstract
Elastic fibers provide recoil to tissues that undergo repeated deformation, such as blood vessels, lungs and skin. Composed of elastin and its accessory proteins, the fibers are produced within a restricted developmental window and are stable for decades. Their eventual breakdown is associated with a loss of tissue resiliency and aging. Rare alteration of the elastin (ELN) gene produces disease by impacting protein dosage (supravalvar aortic stenosis, Williams Beuren syndrome and Williams Beuren region duplication syndrome) and protein function (autosomal dominant cutis laxa). This review highlights aspects of the elastin molecule and its assembly process that contribute to human disease and also discusses potential therapies aimed at treating diseases of elastin insufficiency.
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Affiliation(s)
| | - Beth A Kozel
- National Institutes of Health, National Heart Lung and Blood Institute, Bethesda, MD, USA.
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8
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Mora Huertas AC, Schmelzer CEH, Hoehenwarter W, Heyroth F, Heinz A. Molecular-level insights into aging processes of skin elastin. Biochimie 2016; 128-129:163-73. [PMID: 27569260 DOI: 10.1016/j.biochi.2016.08.010] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 08/22/2016] [Indexed: 10/21/2022]
Abstract
Skin aging is characterized by different features including wrinkling, atrophy of the dermis and loss of elasticity associated with damage to the extracellular matrix protein elastin. The aim of this study was to investigate the aging process of skin elastin at the molecular level by evaluating the influence of intrinsic (chronological aging) and extrinsic factors (sun exposure) on the morphology and susceptibility of elastin towards enzymatic degradation. Elastin was isolated from biopsies derived from sun-protected or sun-exposed skin of differently aged individuals. The morphology of the elastin fibers was characterized by scanning electron microscopy. Mass spectrometric analysis and label-free quantification allowed identifying differences in the cleavage patterns of the elastin samples after enzymatic digestion. Principal component analysis and hierarchical cluster analysis were used to visualize differences between the samples and to determine the contribution of extrinsic and intrinsic aging to the proteolytic susceptibility of elastin. Moreover, the release of potentially bioactive peptides was studied. Skin aging is associated with the decomposition of elastin fibers, which is more pronounced in sun-exposed tissue. Marker peptides were identified, which showed an age-related increase or decrease in their abundances and provide insights into the progression of the aging process of elastin fibers. Strong age-related cleavage occurs in hydrophobic tropoelastin domains 18, 20, 24 and 26. Photoaging makes the N-terminal and central parts of the tropoelastin molecules more susceptible towards enzymatic cleavage and, hence, accelerates the age-related degradation of elastin.
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Affiliation(s)
- Angela C Mora Huertas
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Christian E H Schmelzer
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | | | - Frank Heyroth
- Interdisciplinary Center of Material Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Andrea Heinz
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
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9
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Muiznieks LD, Miao M, Sitarz EE, Keeley FW. Contribution of domain 30 of tropoelastin to elastic fiber formation and material elasticity. Biopolymers 2016; 105:267-75. [DOI: 10.1002/bip.22804] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/26/2015] [Accepted: 12/20/2015] [Indexed: 02/01/2023]
Affiliation(s)
- Lisa D. Muiznieks
- Molecular Structure and Function Program; Hospital for Sick Children; 555 University Ave. Toronto ON M5G1X8 Canada
| | - Ming Miao
- Molecular Structure and Function Program; Hospital for Sick Children; 555 University Ave. Toronto ON M5G1X8 Canada
| | - Eva E. Sitarz
- Molecular Structure and Function Program; Hospital for Sick Children; 555 University Ave. Toronto ON M5G1X8 Canada
| | - Fred W. Keeley
- Molecular Structure and Function Program; Hospital for Sick Children; 555 University Ave. Toronto ON M5G1X8 Canada
- Department of Biochemistry, 1 King's College Circle; University of Toronto; Toronto ON M5S1A8 Canada
- Department of Pathology and Laboratory Medicine, 1 King's College Circle; University of Toronto; Toronto ON M5S1A8 Canada
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Annabi N, Tamayol A, Uquillas JA, Akbari M, Bertassoni LE, Cha C, Camci-Unal G, Dokmeci MR, Peppas NA, Khademhosseini A. 25th anniversary article: Rational design and applications of hydrogels in regenerative medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:85-123. [PMID: 24741694 PMCID: PMC3925010 DOI: 10.1002/adma.201303233] [Citation(s) in RCA: 845] [Impact Index Per Article: 84.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Hydrogels are hydrophilic polymer-based materials with high water content and physical characteristics that resemble the native extracellular matrix. Because of their remarkable properties, hydrogel systems are used for a wide range of biomedical applications, such as three-dimensional (3D) matrices for tissue engineering, drug-delivery vehicles, composite biomaterials, and as injectable fillers in minimally invasive surgeries. In addition, the rational design of hydrogels with controlled physical and biological properties can be used to modulate cellular functionality and tissue morphogenesis. Here, the development of advanced hydrogels with tunable physiochemical properties is highlighted, with particular emphasis on elastomeric, light-sensitive, composite, and shape-memory hydrogels. Emerging technologies developed over the past decade to control hydrogel architecture are also discussed and a number of potential applications and challenges in the utilization of hydrogels in regenerative medicine are reviewed. It is anticipated that the continued development of sophisticated hydrogels will result in clinical applications that will improve patient care and quality of life.
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Affiliation(s)
- Nasim Annabi
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Ali Tamayol
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jorge Alfredo Uquillas
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mohsen Akbari
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Luiz E. Bertassoni
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Chaenyung Cha
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Gulden Camci-Unal
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Mehmet R. Dokmeci
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Nicholas A. Peppas
- Department of Biomedical Engineering, Biomedical Engineering Building 3.110B, The University of Texas at Austin, 1 University Station, C0800, Austin, Texas, 78712–1062, USA
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA. Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
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Annabi N, Mithieux SM, Camci-Unal G, Dokmeci MR, Weiss AS, Khademhosseini A. Elastomeric Recombinant Protein-based Biomaterials. Biochem Eng J 2013; 77:110-118. [PMID: 23935392 DOI: 10.1016/j.bej.2013.05.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Elastomeric protein-based biomaterials, produced from elastin derivatives, are widely investigated as promising tissue engineering scaffolds due to their remarkable properties including substantial extensibility, long-term stability, self-assembly, high resilience upon stretching, low energy loss, and excellent biological activity. These elastomers are processed from different sources of soluble elastin such as animal-derived soluble elastin, recombinant human tropoelastin, and elastin-like polypeptides into various forms including three dimensional (3D) porous hydrogels, elastomeric films, and fibrous electrospun scaffolds. Elastin-based biomaterials have shown great potential for the engineering of elastic tissues such as skin, lung and vasculature. In this review, the synthesis and properties of various elastin-based elastomers with their applications in tissue engineering are described.
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Affiliation(s)
- Nasim Annabi
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02139, USA ; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA ; Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts, 02139, USA
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12
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Miao M, Sitarz E, Bellingham CM, Won E, Muiznieks LD, Keeley FW. Sequence and domain arrangements influence mechanical properties of elastin-like polymeric elastomers. Biopolymers 2013; 99:392-407. [DOI: 10.1002/bip.22192] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 11/15/2012] [Accepted: 11/18/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Ming Miao
- Molecular Structure and Function Program; Research Institute; The Hospital for Sick Children; 555 University Avenue; Toronto; ON; M5G1X8; Canada
| | - Eva Sitarz
- Molecular Structure and Function Program; Research Institute; The Hospital for Sick Children; 555 University Avenue; Toronto; ON; M5G1X8; Canada
| | - Catherine M. Bellingham
- Molecular Structure and Function Program; Research Institute; The Hospital for Sick Children; 555 University Avenue; Toronto; ON; M5G1X8; Canada
| | - Emily Won
- Molecular Structure and Function Program; Research Institute; The Hospital for Sick Children; 555 University Avenue; Toronto; ON; M5G1X8; Canada
| | - Lisa D. Muiznieks
- Molecular Structure and Function Program; Research Institute; The Hospital for Sick Children; 555 University Avenue; Toronto; ON; M5G1X8; Canada
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14
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Heinz A, Jung MC, Jahreis G, Rusciani A, Duca L, Debelle L, Weiss AS, Neubert RHH, Schmelzer CEH. The action of neutrophil serine proteases on elastin and its precursor. Biochimie 2011; 94:192-202. [PMID: 22030899 DOI: 10.1016/j.biochi.2011.10.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Accepted: 10/12/2011] [Indexed: 11/17/2022]
Abstract
This study aimed to investigate the degradation of the natural substrates tropoelastin and elastin by the neutrophil-derived serine proteases human leukocyte elastase (HLE), proteinase 3 (PR3) and cathepsin G (CG). Focus was placed on determining their cleavage site specificities using mass spectrometric techniques. Moreover, the release of bioactive peptides from elastin by the three proteases was studied. Tropoelastin was comprehensively degraded by all three proteases, whereas less cleavage occurred in mature cross-linked elastin. An analysis of the cleavage site specificities of the three proteases in tropoelastin and elastin revealed that HLE and PR3 similarly tolerate hydrophobic and/or aliphatic amino acids such as Ala, Gly and Val at P(1), which are also preferred by CG. In addition, CG prefers the bulky hydrophobic amino acid Leu and accepts the bulky aromatic amino acids Phe and Tyr. CG shows a strong preference for the charged amino acid Lys at P(1) in tropoelastin, whereas Lys was not identified at P(1) in CG digests of elastin due to extensive cross-linking at Lys residues in mature elastin. All three serine proteases showed a clear preference for Pro at P(2) and P(4)'. With respect to the liberation of potentially bioactive peptides from elastin, the study revealed that all three serine proteases have a similar ability to release bioactive sequences, with CG producing the highest number of these peptides. In bioactivity studies, potentially bioactive peptides that have not been investigated on their bioactivity to date, were tested. Three new bioactive GxxPG motifs were identified; GVYPG, GFGPG and GVLPG.
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Affiliation(s)
- Andrea Heinz
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Faculty of Natural Sciences I, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
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Miao M, Stahl RJ, Petersen LF, Reintsch WE, Davis EC, Keeley FW. Characterization of an unusual tropoelastin with truncated C-terminus in the frog. Matrix Biol 2009; 28:432-41. [DOI: 10.1016/j.matbio.2009.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 07/03/2009] [Accepted: 07/17/2009] [Indexed: 10/20/2022]
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Bax DV, Rodgers UR, Bilek MMM, Weiss AS. Cell adhesion to tropoelastin is mediated via the C-terminal GRKRK motif and integrin alphaVbeta3. J Biol Chem 2009; 284:28616-23. [PMID: 19617625 DOI: 10.1074/jbc.m109.017525] [Citation(s) in RCA: 127] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Elastin fibers are predominantly composed of the secreted monomer tropoelastin. This protein assembly confers elasticity to all vertebrate elastic tissues including arteries, lung, skin, vocal folds, and elastic cartilage. In this study we examined the mechanism of cell interactions with recombinant human tropoelastin. Cell adhesion to human tropoelastin was divalent cation-dependent, and the inhibitory anti-integrin alpha(V)beta(3) antibody LM609 inhibited cell spreading on tropoelastin, identifying integrin alpha(V)beta(3) as the major fibroblast cell surface receptor for human tropoelastin. Cell adhesion was unaffected by lactose and heparin sulfate, indicating that the elastin-binding protein and cell surface glycosaminoglycans are not involved. The C-terminal GRKRK motif of tropoelastin can bind to cells in a divalent cation-dependent manner, identifying this as an integrin binding motif required for cell adhesion.
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Affiliation(s)
- Daniel V Bax
- Applied and Plasma Physics, School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia.
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