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Krymchenko R, Coşar Kutluoğlu G, van Hout N, Manikowski D, Doberenz C, van Kuppevelt TH, Daamen WF. Elastogenesis in Focus: Navigating Elastic Fibers Synthesis for Advanced Dermal Biomaterial Formulation. Adv Healthc Mater 2024:e2400484. [PMID: 38989717 DOI: 10.1002/adhm.202400484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/31/2024] [Indexed: 07/12/2024]
Abstract
Elastin, a fibrous extracellular matrix (ECM) protein, is the main component of elastic fibers that are involved in tissues' elasticity and resilience, enabling them to undergo reversible extensibility and to endure repetitive mechanical stress. After wounding, it is challenging to regenerate elastic fibers and biomaterials developed thus far have struggled to induce its biosynthesis. This review provides a comprehensive summary of elastic fibers synthesis at the cellular level and its implications for biomaterial formulation, with a particular focus on dermal substitutes. The review delves into the intricate process of elastogenesis by cells and investigates potential triggers for elastogenesis encompassing elastin-related compounds, ECM components, and other molecules for their potential role in inducing elastin formation. Understanding of the elastogenic processes is essential for developing biomaterials that trigger not only the synthesis of the elastin protein, but also the formation of a functional and branched elastic fiber network.
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Affiliation(s)
- Roman Krymchenko
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
| | - Gizem Coşar Kutluoğlu
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
- MedSkin Solutions Dr. Suwelack AG, 48727, Billerbeck, Germany
| | - Noor van Hout
- Department of Dermatology, Radboud university medical center, Nijmegen, 6525 GA, The Netherlands
| | | | | | - Toin H van Kuppevelt
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
| | - Willeke F Daamen
- Department of Medical BioSciences, Research Institute for Medical Innovation, Radboud university medical center, PO Box 9101, Nijmegen, 6500 HB, The Netherlands
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Hassan N, Krieg T, Zinser M, Schröder K, Kröger N. An Overview of Scaffolds and Biomaterials for Skin Expansion and Soft Tissue Regeneration: Insights on Zinc and Magnesium as New Potential Key Elements. Polymers (Basel) 2023; 15:3854. [PMID: 37835903 PMCID: PMC10575381 DOI: 10.3390/polym15193854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 10/15/2023] Open
Abstract
The utilization of materials in medical implants, serving as substitutes for non-functional biological structures, supporting damaged tissues, or reinforcing active organs, holds significant importance in modern healthcare, positively impacting the quality of life for millions of individuals worldwide. However, certain implants may only be required temporarily to aid in the healing process of diseased or injured tissues and tissue expansion. Biodegradable metals, including zinc (Zn), magnesium (Mg), iron, and others, present a new paradigm in the realm of implant materials. Ongoing research focuses on developing optimized materials that meet medical standards, encompassing controllable corrosion rates, sustained mechanical stability, and favorable biocompatibility. Achieving these objectives involves refining alloy compositions and tailoring processing techniques to carefully control microstructures and mechanical properties. Among the materials under investigation, Mg- and Zn-based biodegradable materials and their alloys demonstrate the ability to provide necessary support during tissue regeneration while gradually degrading over time. Furthermore, as essential elements in the human body, Mg and Zn offer additional benefits, including promoting wound healing, facilitating cell growth, and participating in gene generation while interacting with various vital biological functions. This review provides an overview of the physiological function and significance for human health of Mg and Zn and their usage as implants in tissue regeneration using tissue scaffolds. The scaffold qualities, such as biodegradation, mechanical characteristics, and biocompatibility, are also discussed.
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Affiliation(s)
- Nourhan Hassan
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Biotechnology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Thomas Krieg
- Translational Matrix Biology, Medical Faculty, University of Cologne, 50923 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50923 Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, 50923 Cologne, Germany
| | - Max Zinser
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Department for Oral and Craniomaxillofacial and Plastic Surgery, University of Cologne, Kerpener Strasse 62, 50931 Cologne, Germany
| | - Kai Schröder
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
| | - Nadja Kröger
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine, University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
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Kamaruzaman N, Fauzi MB, Tabata Y, Yusop SM. Functionalised Hybrid Collagen-Elastin for Acellular Cutaneous Substitute Applications. Polymers (Basel) 2023; 15:polym15081929. [PMID: 37112076 PMCID: PMC10143773 DOI: 10.3390/polym15081929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/10/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Wound contracture, which commonly happens after wound healing, may lead to physical distortion, including skin constriction. Therefore, the combination of collagen and elastin as the most abundant extracellular matrix (ECM) skin matrices may provide the best candidate biomaterials for cutaneous wound injury. This study aimed to develop a hybrid scaffold containing green natural resources (ovine tendon collagen type-I and poultry-based elastin) for skin tissue engineering. Briefly, freeze-drying was used to create the hybrid scaffolds, which were then crosslinked with 0.1% (w/v) genipin (GNP). Next, the physical characteristics (pore size, porosity, swelling ratio, biodegradability and mechanical strength) of the microstructure were assessed. Energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared (FTIR) spectrophotometry were used for the chemical analysis. The findings showed a uniform and interconnected porous structure with acceptable porosity (>60%) and high-water uptake capacity (>1200%), with pore sizes ranging between 127 ± 22 and 245 ± 35 µm. The biodegradation rate of the fabricated scaffold containing 5% elastin was lower (<0.043 mg/h) compared to the control scaffold (collagen only; 0.085 mg/h). Further analysis with EDX identified the main elements of the scaffold: it contained carbon (C) 59.06 ± 1.36-70.66 ± 2.89%, nitrogen (N) 6.02 ± 0.20-7.09 ± 0.69% and oxygen (O) 23.79 ± 0.65-32.93 ± 0.98%. FTIR analysis revealed that collagen and elastin remained in the scaffold and exhibited similar functional amides (amide A: 3316 cm-1, amide B: 2932 cm-1, amide I: 1649 cm-1, amide II: 1549 cm-1 and amide III: 1233 cm-1). The combination of elastin and collagen also produced a positive effect via increased Young's modulus values. No toxic effect was identified, and the hybrid scaffolds significantly supported human skin cell attachment and viability. In conclusion, the fabricated hybrid scaffolds demonstrated optimum physicochemical and mechanical properties and may potentially be used as an acellular skin substitute in wound management.
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Affiliation(s)
- Nurkhuzaiah Kamaruzaman
- Department of Food Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Mh Busra Fauzi
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Selangor, Malaysia
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Department of Regeneration Science and Engineering, Institute for Life and Medical Sciences (LiMe), Kyoto University, 53 Kawara-cho Shogoin, Sakyo-Ku, Kyoto 606-8507, Japan
| | - Salma Mohamad Yusop
- Department of Food Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
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Maitz J, Wang Y, Fathi A, Ximena Escobar F, Parungao R, van Zuijlen P, Maitz P, Li Z. The effects of cross-linking a collagen-elastin dermal template on scaffold bio-stability and degradation. J Tissue Eng Regen Med 2020; 14:1189-1200. [PMID: 32721107 DOI: 10.1002/term.3082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 06/03/2020] [Accepted: 06/15/2020] [Indexed: 12/18/2022]
Abstract
MatriDerm is a collagen-elastin dermal template that promotes regeneration in full-thickness wound repair. Due to its noncross-linked status, MatriDerm biodegrades quickly in a wound. Facilitating vascularization and dermal repair, it is desirable for MatriDerm to remain present until the wound healing process is complete, optimizing tissue regeneration and reducing wound contraction. The aim of this study was to investigate the effect of cross-linking MatriDerm on its mechanical and biological properties and to enhance its regenerative functionality. MatriDerm was chemically cross-linked and characterized in comparison with noncross-linked MatriDerm. Scaffold properties including surface morphology, protein release and mechanical strength were assessed. Cell-scaffold interaction, cell proliferation and migration were examined using human dermal fibroblasts. Scaffold biodegradation and its impact on wound healing and contraction were studied in a mouse model. Results showed that cross-linked MatriDerm displayed a small reduction in pore size, significantly less protein loss and a threefold increase in tensile strength. A significant increase in fibroblast proliferation and migration was observed in cross-linked MatriDerm with reduced scaffold contraction in vitro. In the mouse model, noncross-linked MatriDerm was almost completely biodegraded after 14 days whereas cross-linked MatriDerm remained intact. No significant difference in wound contraction was found between scaffolds. In conclusion, cross-linked MatriDerm showed a significant increase in stability and strength, enhancing its durability and cell-scaffold interaction. in vivo analysis showed cross-linked MatriDerm had a reduced biodegradation rate with a similar host response. The extended structural integrity of cross-linked MatriDerm could potentially facilitate improved skin tissue regeneration, promoting the formation of a more pliable scar.
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Affiliation(s)
- Joanneke Maitz
- Burn Injury and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, New South Wales, Australia
| | - Yiwei Wang
- Burn Injury and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, New South Wales, Australia.,Disciplines of Surgery, University of Sydney Concord Clinical School, Concord, New South Wales, Australia
| | - Ali Fathi
- Faculty of Engineering and Information Technologies, University of Sydney, Camperdown, New South Wales, Australia
| | - Francia Ximena Escobar
- Burn Injury and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, New South Wales, Australia
| | - Roxanne Parungao
- Burn Injury and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, New South Wales, Australia
| | - Paul van Zuijlen
- Burn Centre and Dept. of Plastic and Reconstructive Surgery, Red Cross Hospital, Beverwijk, the Netherlands.,Amsterdam Movement Sciences, Amsterdam UMC, Amsterdam, NH, the Netherlands
| | - Peter Maitz
- Burn Injury and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, New South Wales, Australia.,Burns Unit, Concord Hospital, Concord, New South Wales, Australia.,Disciplines of Surgery, University of Sydney Concord Clinical School, Concord, New South Wales, Australia
| | - Zhe Li
- Burn Injury and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, New South Wales, Australia.,Burns Unit, Concord Hospital, Concord, New South Wales, Australia.,Disciplines of Surgery, University of Sydney Concord Clinical School, Concord, New South Wales, Australia
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Cao Y, Lee BH, Irvine SA, Wong YS, Bianco Peled H, Venkatraman S. Inclusion of Cross-Linked Elastin in Gelatin/PEG Hydrogels Favourably Influences Fibroblast Phenotype. Polymers (Basel) 2020; 12:polym12030670. [PMID: 32192137 PMCID: PMC7183321 DOI: 10.3390/polym12030670] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/11/2020] [Accepted: 03/13/2020] [Indexed: 12/16/2022] Open
Abstract
The capacity of a biomaterial to innately modulate cell behavior while meeting the mechanical property requirements of the implant is a much sought-after goal within bioengineering. Here we covalently incorporate soluble elastin into a gelatin–poly (ethylene glycol) (PEG) hydrogel for three-dimensional (3D) cell encapsulation to achieve these properties. The inclusion of elastin into a previously optimized gelatin–PEG hydrogel was then evaluated for effects on entrapped fibroblasts, with the aim to assess the hydrogel as an extracellular matrix (ECM)-mimicking 3D microenvironment for cellular guidance. Soluble elastin was incorporated both physically and covalently into novel gelatin/elastin hybrid PEG hydrogels with the aim to harness the cellular interactivity and mechanical tunability of both elastin and gelatin. This design allowed us to assess the benefits of elastin-containing hydrogels in guiding fibroblast activity for evaluation as a potential dermal replacement. It was found that a gelatin–PEG hydrogel with covalently conjugated elastin, supported neonatal fibroblast viability, promoted their proliferation from 7.3% to 13.5% and guided their behavior. The expression of collagen alpha-1(COL1A1) and elastin in gelatin/elastin hybrid gels increased 16-fold and 6-fold compared to control sample at day 9, respectively. Moreover, cells can be loaded into the hydrogel precursor solution, deposited, and the matrix cross-linked without affecting the incorporated cells adversely, thus enabling a potential injectable system for dermal wound healing.
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Affiliation(s)
- Ye Cao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.C.); (B.H.L.); (S.A.I.); (Y.S.W.)
- The Inter-Departmental Program for Biotechnology, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Bae Hoon Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.C.); (B.H.L.); (S.A.I.); (Y.S.W.)
| | - Scott Alexander Irvine
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.C.); (B.H.L.); (S.A.I.); (Y.S.W.)
| | - Yee Shan Wong
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.C.); (B.H.L.); (S.A.I.); (Y.S.W.)
| | - Havazelet Bianco Peled
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
- Correspondence: (H.B.P.); (S.V.)
| | - Subramanian Venkatraman
- Subramanian Venkatraman, Materials Science and Engineering, National University of Singapore, Singapore 119077, Singapore
- Correspondence: (H.B.P.); (S.V.)
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Liu Y, Su G, Zhou F, Zhang J, Zheng L, Zhao M. Protective Effect of Bovine Elastin Peptides against Photoaging in Mice and Identification of Novel Antiphotoaging Peptides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:10760-10768. [PMID: 30269487 DOI: 10.1021/acs.jafc.8b04676] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This study aimed to investigate the protective effects of bovine elastin hydrolysates on UV-induced skin photoaging in mice and to identify the potent antiphotoaging peptides. Results showed that the ingestion of elastin peptides could obviously ameliorate epidermis hyperplasia and fibroblast apoptosis, and increase the content of hydroxyproline and water in photoaging skin in vivo ( p < 0.05). Furthermore, four peptides with elastase inhibitory activity were purified and identified, including GLPY, PY, GLGPGVG, and GPGGVGAL. Interestingly, GLPY and GPGGVGAL exhibited the highest inhibition activity with 58.77% and 42.91% at 10 mΜ, respectively. This might be attributed to the N-terminal Gly, C-terminal Leu, and Pro at the third position of the N-terminus, which showed stronger affinity and interaction with elastase. Moreover, GLPY and GPGGVGAL could also inhibit the apoptosis of fibroblasts effectively at 50 μΜ ( p < 0.01). It suggested that elastin peptides had great potential to prevent and regulate skin photoaging.
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Affiliation(s)
- Yang Liu
- School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center , Guangzhou 510650 , China
| | - Guowan Su
- School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center , Guangzhou 510650 , China
| | - Feibai Zhou
- School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center , Guangzhou 510650 , China
| | - Jianan Zhang
- School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center , Guangzhou 510650 , China
| | - Lin Zheng
- School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Mouming Zhao
- School of Food Science and Engineering , South China University of Technology , Guangzhou 510640 , China
- Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center , Guangzhou 510650 , China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology & Business University , Beijing 100048 , China
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Qa'aty N, Vincent M, Wang Y, Wang A, Mitts TF, Hinek A. Synthetic ligands of the elastin receptor induce elastogenesis in human dermal fibroblasts via activation of their IGF-1 receptors. J Dermatol Sci 2015; 80:175-85. [PMID: 26475432 DOI: 10.1016/j.jdermsci.2015.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 08/19/2015] [Accepted: 10/01/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND We have previously reported that a mixture of peptides obtained after chemical or enzymatic degradation of bovine elastin, induced new elastogenesis in human skin. OBJECTIVE Now, we investigated the elastogenic potential of synthetic peptides mimicking the elastin-derived, VGVAPG sequence, IGVAPG sequence that we found in the rice bran, and a similar peptide, VGVTAG that we identified in the IGF-1-binding protein-1 (IGFBP-1). RESULTS We now demonstrate that treatment with each of these xGVxxG peptides (recognizable by the anti-elastin antibody), up-regulated the levels of elastin-encoding mRNA, tropoelastin protein, and the deposition of new elastic fibers in cultures of human dermal fibroblasts and in cultured explants of human skin. Importantly, we found that such induction of new elastogenesis may involve two parallel signaling pathways triggered after activation of IGF-1 receptor. In the first one, the xGVxxG peptides interact with the cell surface elastin receptor, thereby causing the downstream activation of the c-Src kinase and a consequent cross-activation of the adjacent IGF-1R, even in the absence of its principal ligand. In the second pathway their hydrophobic association with the N-terminal domain (VGVTAG) of the serum-derived IGFBP-1 induces conformational changes of this IGF-1 chaperone allowing for the release of its cargo and a consequent ligand-specific phosphorylation of IGF-1R. CONCLUSION We present a novel, clinically relevant mechanism in which products of partial degradation of dermal elastin may stimulate production of new elastic fibers by dermal fibroblasts. Our findings particularly encourage the use of biologically safe synthetic xGVxxG peptides for regeneration of the injured or aged human skin.
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Affiliation(s)
- Nour Qa'aty
- Physiology & Experimental Medicine Program, Hospital for Sick Children, ON, Canada; Institute of Medical Science, University of Toronto, ON, Canada
| | - Matthew Vincent
- Physiology & Experimental Medicine Program, Hospital for Sick Children, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, ON, Canada
| | - Yanting Wang
- Physiology & Experimental Medicine Program, Hospital for Sick Children, ON, Canada
| | - Andrew Wang
- Physiology & Experimental Medicine Program, Hospital for Sick Children, ON, Canada
| | | | - Aleksander Hinek
- Physiology & Experimental Medicine Program, Hospital for Sick Children, ON, Canada; Institute of Medical Science, University of Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, ON, Canada.
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Pirayesh A, Hoeksema H, Richters C, Verbelen J, Monstrey S. Glyaderm(®) dermal substitute: clinical application and long-term results in 55 patients. Burns 2014; 41:132-44. [PMID: 24946965 DOI: 10.1016/j.burns.2014.05.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/25/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Glycerol preserved acellular dermis (Glyaderm(®)) consists of collagen and elastin fibers and is the first non-profit dermal substitute derived from glycerol-preserved, human allogeneic skin. It is indicated for bi-layered skin reconstruction of full thickness wounds. METHODS A protocol for clinical application and optimal interval before autografting with split thickness skin graft (STSG) was developed in a pilot study. A phase III randomized, controlled, paired, intra-individual study compared full thickness defects engrafted with Glyaderm(®) and STSG versus STSG alone. Outcome measures included percentage of Glyaderm(®) take, STSG take, and scar quality assessment. RESULTS Pilot study (27 patients): Mean take rates equaled 91.55% for Glyaderm(®) and 96.67% for STSG. The optimal autografting interval was 6 days (±1 day). Randomized trial (28 patients): Mean Glyaderm(®) take rate was 88.17%. STSG take rates were comparable for both research groups (p=0.588). One year after wound closure, Glyaderm(®)+STSG was significantly more elastic (p=0.003) than STSG alone. Blinded observers scored Glyaderm(®) treated wounds better in terms of scar quality. DISCUSSION The efficacy of Glyaderm(®) as a suitable dermal substitute for full thickness wounds is attested. Currently a procedure for simultaneous application of Glyaderm(®) and STSG is adopted, allowing for further widespread use of Glyaderm(®).
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Affiliation(s)
- Ali Pirayesh
- Department of Plastic and Reconstructive Surgery, Burn Center, Ghent University Hospital, Ghent, Belgium
| | - Henk Hoeksema
- Department of Plastic and Reconstructive Surgery, Burn Center, Ghent University Hospital, Ghent, Belgium
| | - Cornelia Richters
- Department of Molecular Cell Biology and Immunology, Medical Faculty, Vrije Universiteit Medical Center, Amsterdam, The Netherlands; Euro Skin Bank, Beverwijk, The Netherlands
| | - Jozef Verbelen
- Department of Plastic and Reconstructive Surgery, Burn Center, Ghent University Hospital, Ghent, Belgium
| | - Stan Monstrey
- Department of Plastic and Reconstructive Surgery, Burn Center, Ghent University Hospital, Ghent, Belgium.
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Machula H, Ensley B, Kellar R. Electrospun Tropoelastin for Delivery of Therapeutic Adipose-Derived Stem Cells to Full-Thickness Dermal Wounds. Adv Wound Care (New Rochelle) 2014; 3:367-375. [PMID: 24804156 DOI: 10.1089/wound.2013.0513] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 01/20/2014] [Indexed: 11/12/2022] Open
Abstract
Objective: To evaluate the physiological effects of electrospun tropoelastin scaffolds as therapeutic adipose-derived stem cell (ADSC) delivery vehicles for the treatment of full-thickness dermal wounds. Approach: Using the process of electrospinning, several prototype microfiber scaffolds were created with tropoelastin. Initial testing of scaffold biocompatibility was performed in vitro through ADSC culture, followed by scanning electron microscopy (SEM) for assessment of ADSC attachment, morphology, and new extracellular matrix (ECM) deposition. The wound healing effects of ADSC-seeded scaffolds were then evaluated in a murine dermal excisional wound model. Results: For the in vitro study, SEM revealed exceptional biocompatibility of electrospun tropoelastin for ADSCs. In the wound-healing study, ADSC-treated groups demonstrated significantly enhanced wound closure and epithelial thickness compared to controls. Innovation: This is the first report on the use of tropoelastin-based biomaterials as delivery vehicles for therapeutic ADSCs. Conclusion: We have demonstrated that tropoelastin-based ADSC delivery vehicles significantly accelerate wound healing compared to controls that represent the current clinical standard of care. Furthermore, the unique mechanical and biochemical characteristics of tropoelastin may favor its use over other biological or synthetic scaffolds for the treatment of certain pathologies due to its unique intrinsic mechanical properties.
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Affiliation(s)
- Hans Machula
- Biological Sciences, Northern Arizona University, Flagstaff, Arizona
| | | | - Robert Kellar
- Biological Sciences, Northern Arizona University, Flagstaff, Arizona
- Protein Genomics, Sedona, Arizona
- Development Engineering Sciences, Flagstaff, Arizona
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10
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Regeneration of Human Dermis by a Multi-Headed Peptide. J Invest Dermatol 2014; 134:58-67. [DOI: 10.1038/jid.2013.290] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 05/30/2013] [Accepted: 06/05/2013] [Indexed: 11/08/2022]
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Abstract
Skin is an important organ to the human body as it functions as an interface between the body and environment. Cutaneous injury elicits a complex wound healing process, which is an orchestration of cells, matrix components, and signaling factors that re-establishes the barrier function of skin. In adults, an unavoidable consequence of wound healing is scar formation. However, in early fetal development, wound healing is scarless. This phenomenon is characterized by an attenuated inflammatory response, differential expression of signaling factors, and regeneration of normal skin architecture. Elastin endows a range of mechanical and cell interactive properties to skin. In adult wound healing, elastin is severely lacking and only a disorganized elastic fiber network is present after scar formation. The inherent properties of elastin make it a desirable inclusion to adult wound healing. Elastin imparts recoil and resistance and induces a range of cell activities, including cell migration and proliferation, matrix synthesis, and protease production. The effects of elastin align with the hallmarks of fetal scarless wound healing. Elastin synthesis is substantial in late stage in utero and drops to a trickle in adults. The physical and cell signaling advantages of elastin in a wound healing context creates a parallel with the innate features of fetal skin that can allow for scarless healing.
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Affiliation(s)
- Jessica F Almine
- School of Molecular Bioscience, University of Sydney, New South Wales, Australia
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Sivaraman B, Bashur CA, Ramamurthi A. Advances in biomimetic regeneration of elastic matrix structures. Drug Deliv Transl Res 2012; 2:323-50. [PMID: 23355960 PMCID: PMC3551595 DOI: 10.1007/s13346-012-0070-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Elastin is a vital component of the extracellular matrix, providing soft connective tissues with the property of elastic recoil following deformation and regulating the cellular response via biomechanical transduction to maintain tissue homeostasis. The limited ability of most adult cells to synthesize elastin precursors and assemble them into mature crosslinked structures has hindered the development of functional tissue-engineered constructs that exhibit the structure and biomechanics of normal native elastic tissues in the body. In diseased tissues, the chronic overexpression of proteolytic enzymes can cause significant matrix degradation, to further limit the accumulation and quality (e.g., fiber formation) of newly deposited elastic matrix. This review provides an overview of the role and importance of elastin and elastic matrix in soft tissues, the challenges to elastic matrix generation in vitro and to regenerative elastic matrix repair in vivo, current biomolecular strategies to enhance elastin deposition and matrix assembly, and the need to concurrently inhibit proteolytic matrix disruption for improving the quantity and quality of elastogenesis. The review further presents biomaterial-based options using scaffolds and nanocarriers for spatio-temporal control over the presentation and release of these biomolecules, to enable biomimetic assembly of clinically relevant native elastic matrix-like superstructures. Finally, this review provides an overview of recent advances and prospects for the application of these strategies to regenerating tissue-type specific elastic matrix structures and superstructures.
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Affiliation(s)
- Balakrishnan Sivaraman
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
| | - Chris A. Bashur
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
| | - Anand Ramamurthi
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
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Rnjak J, Wise SG, Mithieux SM, Weiss AS. Severe Burn Injuries and the Role of Elastin in the Design of Dermal Substitutes. TISSUE ENGINEERING PART B-REVIEWS 2011; 17:81-91. [DOI: 10.1089/ten.teb.2010.0452] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jelena Rnjak
- School of Molecular Bioscience, University of Sydney, Sydney, Australia
| | - Steven G. Wise
- School of Molecular Bioscience, University of Sydney, Sydney, Australia
| | | | - Anthony S. Weiss
- School of Molecular Bioscience, University of Sydney, Sydney, Australia
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Vasconcelos A, Cavaco-Paulo A. Wound dressings for a proteolytic-rich environment. Appl Microbiol Biotechnol 2011; 90:445-60. [DOI: 10.1007/s00253-011-3135-4] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 01/17/2011] [Accepted: 01/17/2011] [Indexed: 11/28/2022]
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15
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Aldosterone and mineralocorticoid receptor antagonists modulate elastin and collagen deposition in human skin. J Invest Dermatol 2010; 130:2396-406. [PMID: 20535129 DOI: 10.1038/jid.2010.155] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We have shown that the steroid hormone aldosterone, recognized for its action on the kidney and the cardiovascular system, also modulates deposition of extracellular matrix in human skin. We have shown that treatment of primary cultures of normal skin fibroblasts with aldosterone (10 n-1 μM), in addition to stimulation of collagen type I expression, induces elastin gene expression and elastic fiber deposition. We have further shown that the elastogenic effect of aldosterone, which can be enhanced in the presence of mineralocorticoid receptor (MR) antagonists spironolactone and eplerenone, is executed in a MR-independent manner via amplification of IGF-I receptor-mediated signaling. Because aldosterone applied alone stimulates both collagen and elastin deposition in cultures of fibroblasts and in cultures of skin explants derived from dermal stretch marks, we postulate that this steroid should be used in the treatment of damaged skin that loses its volume and elasticity. Moreover, aldosterone applied in conjunction with spironolactone or eplerenone induces matrix remodeling and exclusively enhances elastogenesis in cultures of fibroblasts and explants derived from dermal scars and keloids. We therefore propose that intra-lesional injection of these factors should be considered in therapy for disfiguring dermal lesions and especially in prevention of their recurrence after surgical excision.
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Almine JF, Bax DV, Mithieux SM, Nivison-Smith L, Rnjak J, Waterhouse A, Wise SG, Weiss AS. Elastin-based materials. Chem Soc Rev 2010; 39:3371-9. [PMID: 20449520 DOI: 10.1039/b919452p] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elastin is a versatile elastic protein that dominates flexible tissues capable of recoil, and facilitates commensurate cell interactions in these tissues in all higher vertebrates. Elastin's persistence and insolubility hampered early efforts to construct versatile biomaterials. Subsequently the field has progressed substantially through the adapted use of solubilized elastin, elastin-based peptides and the increasing availability of recombinant forms of the natural soluble elastin precursor, tropoelastin. These interactions allow for the formation of a sophisticated range of biomaterial constructs and composites that benefit from elastin's physical properties of innate assembly and elasticity, and cell interactive properties as discussed in this tutorial review.
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Affiliation(s)
- Jessica F Almine
- School of Molecular Bioscience, University of Sydney, NSW, 2006, Australia
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17
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Antonicelli F, Bellon G, Lorimier S, Hornebeck W. Role of the elastin receptor complex (S-Gal/Cath-A/Neu-1) in skin repair and regeneration. Wound Repair Regen 2009; 17:631-8. [DOI: 10.1111/j.1524-475x.2009.00525.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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18
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Lelièvre E, Hinek A, Lupu F, Buquet C, Soncin F, Mattot V. VE-statin/egfl7 regulates vascular elastogenesis by interacting with lysyl oxidases. EMBO J 2008; 27:1658-70. [PMID: 18497746 DOI: 10.1038/emboj.2008.103] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2008] [Accepted: 04/28/2008] [Indexed: 01/21/2023] Open
Abstract
We previously characterized VE-statin/egfl7, a protein that is exclusively secreted by endothelial cells and modulates smooth muscle cell migration. Here, we show that VE-statin/egfl7 is the first known natural negative regulator of vascular elastogenesis. Transgenic mice, expressing VE-statin/egfl7 under the control of keratin-14 promoter, showed an accumulation of VE-statin/egfl7 in arterial walls where its presence correlated with an impaired organization of elastic fibres. In vitro, fibroblasts cultured in the presence of VE-statin/egfl7 were unable to deposit elastic fibres due to a deficient conversion of soluble tropoelastin into insoluble mature elastin. VE-statin/egfl7 interacts with the catalytic domain of lysyl oxidase (LOX) enzymes and, in endothelial cells, endogenous VE-statin/egfl7 colocalizes with LoxL2 and inhibits elastic fibre deposition. In contrast, mature elastic fibres are abundantly deposited by endothelial cells that are prevented from producing endogenous VE-statin/egfl7. We propose a model where VE-statin/egfl7 produced by endothelial cells binds to the catalytic domains of enzymes of the LOX family in the vascular wall, thereby preventing the crosslink of tropoelastin molecules into mature elastin polymers and regulating vascular elastogenesis.
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Affiliation(s)
- Etienne Lelièvre
- CNRS, UMR 8161, Institut de Biologie de Lille, Equipe labellisée La Ligue 2005, Université de Lille I, Université de Lille II, Institut Pasteur de Lille, Lille, France
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Daamen WF, Nillesen STM, Wismans RG, Reinhardt DP, Hafmans T, Veerkamp JH, van Kuppevelt TH. A biomaterial composed of collagen and solubilized elastin enhances angiogenesis and elastic fiber formation without calcification. Tissue Eng Part A 2008; 14:349-60. [PMID: 18333787 DOI: 10.1089/tea.2007.0076] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Elastin is the prime protein in elastic tissues that contributes to elasticity of, for example, lung, aorta, and skin. Upon injury, elastic fibers are not readily replaced, which hampers tissue regeneration. Incorporation of solubilized elastin (hydrolyzed insoluble elastin fibers or elastin peptides) in biomaterials may improve regeneration, because solubilized elastin is able to promote proliferation as well as elastin synthesis. Porous biomaterials composed of highly purified collagen without and without elastin fibers or solubilized elastin were prepared by freezing and lyophilization. Solubilized elastin formed spherical structures that were incorporated in the collagenous part of the scaffolds and that persisted after chemical crosslinking of the scaffolds. Crosslinked scaffolds were subcutaneously implanted in young Sprague Dawley rats. Collagen-solubilized elastin and collagen scaffolds showed no calcification in this sensitive calcification model, in contrast to scaffolds containing elastin fibers. Collagen-solubilized elastin scaffolds also induced angiogenesis, as revealed by type IV collagen staining, and promoted elastic fiber synthesis, as shown with antibodies against rat elastin and fibrillin-1. It is concluded that scaffolds produced from collagen and solubilized elastin present a non-calcifying biomaterial with a capacity for soft-tissue regeneration, especially in relation to elastic fiber synthesis.
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Affiliation(s)
- Willeke F Daamen
- Department of Biochemistry 280, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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Jimenez F, Mitts TF, Liu K, Wang Y, Hinek A. Ellagic and tannic acids protect newly synthesized elastic fibers from premature enzymatic degradation in dermal fibroblast cultures. J Invest Dermatol 2006; 126:1272-80. [PMID: 16601672 DOI: 10.1038/sj.jid.5700285] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Progressive proteolytic degradation of cutaneous elastic fibers, that cannot be adequately replaced or repaired by adult dermal fibroblasts, constitutes a major feature of aging skin. Our present investigations, employing monolayer cultures of human dermal fibroblasts and organ cultures of skin biopsies, were aimed at testing whether the hydrophilic tannic acid (TA) and lipophilic ellagic acid (EA) would protect dermal elastin from exogenous and endogenous enzymatic degradation. Results from both culture systems indicated that dermal fibroblasts, maintained with TA or EA, deposit significantly more elastic fibers than untreated control cultures despite the fact that neither polyphenol enhanced transcription of elastin mRNA or cellular proliferation. Results of a pulse and chase experiment showed that pretreatment with both polyphenols enhanced biostability of tropoelastin and newly deposited elastin. Results of in vitro assays indicated that both polyphenols bound to purified elastin and significantly decreased its proteolytic degradation by elastolytic enzymes belonging to the serine proteinase, cysteine proteinase, and metallo-proteinase families. Importantly, both polyphenols also synergistically enhanced elastogenesis induced by selected elastogenic compounds in cultures of dermal fibroblasts. We propose that EA and TA may be useful for preventing proteolytic degradation of existing dermal elastic fibers and for enhancing more efficient elastogenesis in aged skin.
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Affiliation(s)
- Felipe Jimenez
- Research Department, Human Matrix Sciences, LLC, Visalia, California, USA
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Hinek A, Pshezhetsky AV, von Itzstein M, Starcher B. Lysosomal Sialidase (Neuraminidase-1) Is Targeted to the Cell Surface in a Multiprotein Complex That Facilitates Elastic Fiber Assembly. J Biol Chem 2006; 281:3698-710. [PMID: 16314420 DOI: 10.1074/jbc.m508736200] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We have established previously that the 67-kDa elastin-binding protein (EBP), identical to the spliced variant of beta-galactosidase, acts as a recyclable chaperone that facilitates secretion of tropoelastin. (Hinek, A., Keeley, F. W., and Callahan, J. W. (1995) Exp. Cell Res. 220, 312-324). We now demonstrate that EBP also forms a cell surface-targeted molecular complex with protective protein/cathepsin A and sialidase (neuraminidase-1), and provide evidence that this sialidase activity is a prerequisite for the subsequent release of tropoelastin. We found that treatment with sialidase inhibitors repressed assembly of elastic fibers in cultures of human skin fibroblasts, aortic smooth muscle cells, and ear cartilage chondrocytes and caused impaired elastogenesis in developing chick embryos. Fibroblasts derived from patients with congenital sialidosis (primary deficiency of neuraminidase-1) and galactosialidosis (secondary deficiency of neuraminidase-1) demonstrated impaired elastogenesis, which could be reversed after their transduction with neuraminidase-1 cDNA or after treatment with bacterial sialidase, which has a similar substrate specificity to human neuraminidase-1. We postulate that neuraminidase-1 catalyzes removal of the terminal sialic acids from carbohydrate chains of microfibrillar glycoproteins and other adjacent matrix glycoconjugates, unmasking their penultimate galactosugars. In turn, the exposed galactosugars interact with the galectin domain of EBP, thereby inducing the release of transported tropoelastin molecules and facilitating their subsequent assembly into elastic fibers.
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MESH Headings
- Aorta/metabolism
- Blotting, Western
- Carbohydrates/chemistry
- Cartilage/metabolism
- Catalysis
- Cell Membrane/enzymology
- Cells, Cultured
- Chondrocytes/metabolism
- Chromatography, Affinity
- Clostridium perfringens/metabolism
- DNA, Complementary/metabolism
- Electrophoresis, Polyacrylamide Gel
- Fibroblasts/metabolism
- Galectins/chemistry
- Humans
- Immunohistochemistry
- Lysosomes/metabolism
- Microscopy, Electron
- Microscopy, Fluorescence
- Models, Biological
- Muscle, Smooth/cytology
- Muscle, Smooth/metabolism
- Neuraminidase/biosynthesis
- Protein Binding
- Protein Structure, Tertiary
- Sialic Acids/chemistry
- Skin/metabolism
- Tropoelastin/chemistry
- beta-Galactosidase/metabolism
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Affiliation(s)
- Aleksander Hinek
- Cardiovascular Research Program, The Hospital for Sick Children, University of Toronto, Ontario, Canada.
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