1
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Hu Q, Huang Z, Zhang H, Ma P, Feng R, Feng J. Coaxial electrospun Ag-NPs-loaded endograft membrane with long-term antibacterial function treating mycotic aortic aneurysm. Mater Today Bio 2024; 25:100940. [PMID: 38298561 PMCID: PMC10827516 DOI: 10.1016/j.mtbio.2023.100940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/23/2023] [Accepted: 12/30/2023] [Indexed: 02/02/2024] Open
Abstract
The use of endovascular stent-graft has become an important option in the treatment of aortic pathologies. However, the currently used endograft membranes have limited ability to prevent bacterial colonization. This makes them unsuitable for the treatment of mycotic aneurysms, as the infection is prone to progress after endograft implantation. Moreover, even in non-mycotic aortic pathologies, endograft infections can occur in the short or long term, especially for patients with diabetes mellitus or in immune insufficiency conditions. So, this study aimed to develop a kind of Ag-NPs-loaded endograft membrane by coaxial electrospinning technique, and a series of physical and chemical properties and biological properties of the Ag-NPs-loaded membrane were characterized. Animal experiments conducted in pigs confirmed that the Ag-NPs-loaded membrane was basically non-toxic, exhibited good biocompatibility, and effectively prevented bacterial growth in a mycotic aortic aneurysm model. In conclusion, the Ag-NPs-loaded membrane exhibited good biocompatibility, good anti-infection function and slow-release of Ag-NPs for long-term bacteriostasis. Thus, the Ag-NPs-loaded membrane might hold potential for preventing infection progression and treating mycotic aortic aneurysms in an endovascular way.
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Affiliation(s)
- Qingxi Hu
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, 200444, China
- Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, 200072, China
- National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, 200444, China
| | - Zhenwei Huang
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, 200444, China
| | - Haiguang Zhang
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, 200444, China
- Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai, 200072, China
- National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai, 200444, China
| | - Pengcheng Ma
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Rui Feng
- Shanghai General Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Jiaxuan Feng
- Vascular surgery department, Ruijin Hospital, affiliated to Medical school of Shanghai Jiaotong University, Shanghai, PR China
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2
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Mirzaei M, Dodi G, Gardikiotis I, Pasca SA, Mirdamadi S, Subra G, Echalier C, Puel C, Morent R, Ghobeira R, Soleymanzadeh N, Moser M, Goriely S, Shavandi A. 3D high-precision melt electro written polycaprolactone modified with yeast derived peptides for wound healing. BIOMATERIALS ADVANCES 2023; 149:213361. [PMID: 36965401 DOI: 10.1016/j.bioadv.2023.213361] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 01/27/2023] [Accepted: 02/25/2023] [Indexed: 03/12/2023]
Abstract
In this study melt electro written (MEW) scaffolds of poly(ε-caprolactone) PCL are decorated with anti-inflammatory yeast-derived peptide for skin wound healing. Initially, 13 different yeast-derived peptides were screened and analyzed using both in vitro and in vivo assays. The MEW scaffolds are functionalized with the selected peptide VLSTSFPPW (VW-9) with the highest activity in reducing pro-inflammatory cytokines and stimulating fibroblast proliferation, migration, and collagen production. The peptide was conjugated to the MEW scaffolds using carbodiimide (CDI) and thiol chemistry, with and without plasma treatment, as well as by directly mixing the peptide with the polymer before printing. The MEW scaffolds modified using CDI and thiol chemistry with plasma treatment showed improved fibroblast and macrophage penetration and adhesion, as well as increased cell proliferation and superior anti-inflammatory properties, compared to the other groups. When applied to full-thickness excisional wounds in rats, the peptide-modified MEW scaffold significantly enhanced the healing process compared to controls (p < 0.05). This study provides proof of concept for using yeast-derived peptides to functionalize biomaterials for skin wound healing.
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Affiliation(s)
- Mahta Mirzaei
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles - BioMatter unit, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium; Centre for Food Chemistry and Technology, Ghent University Global Campus, 119-5 Songdomunhwa-Ro, Yeonsu-Gu, Incheon, South Korea; Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Gianina Dodi
- Faculty of Medical Bioengineering, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Romania; Advanced Research and Development Center for Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Romania
| | - Ioannis Gardikiotis
- Advanced Research and Development Center for Experimental Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Romania
| | - Sorin-Aurelian Pasca
- Pathology Department, Faculty of Veterinary Medicine, Ion Ionescu de la Brad Iasi University of Life Sciences, Romania
| | - Saeed Mirdamadi
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Gilles Subra
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Chloé Puel
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Rino Morent
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Rouba Ghobeira
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Architecture and Engineering, Ghent University, St-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Nazila Soleymanzadeh
- Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
| | - Muriel Moser
- ULB Center for Research in Immunology (U-CRI), Laboratory of Immunobiology, Université Libre de Bruxelles, Gosselies, Belgium.
| | - Stanislas Goriely
- ULB Center for Research in Immunology (U-CRI), Laboratory of Immunobiology, Université Libre de Bruxelles, Gosselies, Belgium.
| | - Amin Shavandi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles - BioMatter unit, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium.
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3
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Khan HM, Liao X, Sheikh BA, Wang Y, Su Z, Guo C, Li Z, Zhou C, Cen Y, Kong Q. Smart biomaterials and their potential applications in tissue engineering. J Mater Chem B 2022; 10:6859-6895. [PMID: 36069198 DOI: 10.1039/d2tb01106a] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Smart biomaterials have been rapidly advancing ever since the concept of tissue engineering was proposed. Interacting with human cells, smart biomaterials can play a key role in novel tissue morphogenesis. Various aspects of biomaterials utilized in or being sought for the goal of encouraging bone regeneration, skin graft engineering, and nerve conduits are discussed in this review. Beginning with bone, this study summarizes all the available bioceramics and materials along with their properties used singly or in conjunction with each other to create scaffolds for bone tissue engineering. A quick overview of the skin-based nanocomposite biomaterials possessing antibacterial properties for wound healing is outlined along with skin regeneration therapies using infrared radiation, electrospinning, and piezoelectricity, which aid in wound healing. Furthermore, a brief overview of bioengineered artificial skin grafts made of various natural and synthetic polymers has been presented. Finally, by examining the interactions between natural and synthetic-based biomaterials and the biological environment, their strengths and drawbacks for constructing peripheral nerve conduits are highlighted. The description of the preclinical outcome of nerve regeneration in injury healed with various natural-based conduits receives special attention. The organic and synthetic worlds collide at the interface of nanomaterials and biological systems, producing a new scientific field including nanomaterial design for tissue engineering.
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Affiliation(s)
- Haider Mohammed Khan
- Department of Orthopedics, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Xiaoxia Liao
- Department of Burn and Plastic Surgery, West China School of Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Bilal Ahmed Sheikh
- Department of Orthopedics, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Yixi Wang
- Department of Burn and Plastic Surgery, West China School of Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Zhixuan Su
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, China.,National Engineering Research Centre for Biomaterials, Sichuan University, Chengdu 610064, China.
| | - Chuan Guo
- Department of Orthopedics, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Zhengyong Li
- Department of Burn and Plastic Surgery, West China School of Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Changchun Zhou
- College of Biomedical Engineering, Sichuan University, Chengdu 610064, China.,National Engineering Research Centre for Biomaterials, Sichuan University, Chengdu 610064, China.
| | - Ying Cen
- Department of Burn and Plastic Surgery, West China School of Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China.
| | - Qingquan Kong
- Department of Orthopedics, West China Hospital, Sichuan University, 610041, Chengdu, China.
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4
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Chaiarwut S, Ekabutr P, Chuysinuan P, Chanamuangkon T, Supaphol P. Surface immobilization of PCL electrospun nanofibers with pexiganan for wound dressing. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02669-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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5
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de Oliveira FCS, do Amaral RJFC, Dos Santos LEC, Cummins C, Morris MM, Kearney CJ, Heise A. Versatility of unsaturated polyesters from electrospun macrolactones: RGD immobilization to increase cell attachment. J Biomed Mater Res A 2021; 110:257-265. [PMID: 34322978 DOI: 10.1002/jbm.a.37282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 11/10/2022]
Abstract
Poly(globalide) (PGl), an aliphatic polyester derived from unsaturated macrocylic lactone, can be cross-linked during electrospinning and drug-loaded for regenerative medicine applications. However, it lacks intrinsic recognition sites for cell adhesion and proliferation. In order to improve their cell adhesiveness, and therefore their therapeutic potential, we aimed to functionalize electrospun PGl fibers with RGD sequence generating a biomimetic scaffold. First, an amine compound was attached to the surface double bonds of the PGl fibers. Subsequently, the amino groups were coupled with RGD sequences. X-ray photoelectron spectroscopy (XPS) analysis confirmed the functionalization. The obtained fibers were more hydrophilic, as observed by contact angle analysis, and presented smaller Young's modulus, although similar tensile strength compared with non-functionalized cross-linked fibers. In addition, the functionalization process did not significantly alter fibers morphology, as observed by scanning electron microscopy (SEM). Finally, in vitro analysis evidenced the increase in human mesenchymal stromal cells (hMSC) adhesion (9.88 times higher DNA content after 1 day of culture) and proliferation (3.57 times higher DNA content after 8 days of culture) compared with non-functionalized non-cross-linked fibers. This is the first report demonstrating the functionalization of PGl fibers with RGD sequence, improving PGl therapeutic potential and further corroborating the use of this highly versatile material toward regenerative medicine applications.
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Affiliation(s)
| | - Ronaldo Jose Farias Correa do Amaral
- Kearney Lab, Department of Anatomy and Regenerative Medicine, RCSI University of Medicine and Health Science, Dublin, Ireland.,Tissue Engineering Research Group (TERG), Department of Anatomy, RCSI University of Medicine and Health Science, Dublin, Ireland.,CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland Galway (NUIG) & RCSI, Galway, Ireland
| | - Luiza Erthal Cardoso Dos Santos
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin (TCD), Dublin, Ireland.,Trinity Biomedical Sciences Institute, TCD, Dublin, Ireland
| | - Cian Cummins
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Dublin, Ireland.,AMBER, The SFI Centre for Advanced Materials and Bioengineering, TCD & RCSI, Dublin, Ireland
| | - Michael M Morris
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Dublin, Ireland.,AMBER, The SFI Centre for Advanced Materials and Bioengineering, TCD & RCSI, Dublin, Ireland
| | - Cathal J Kearney
- Kearney Lab, Department of Anatomy and Regenerative Medicine, RCSI University of Medicine and Health Science, Dublin, Ireland.,Tissue Engineering Research Group (TERG), Department of Anatomy, RCSI University of Medicine and Health Science, Dublin, Ireland.,AMBER, The SFI Centre for Advanced Materials and Bioengineering, TCD & RCSI, Dublin, Ireland
| | - Andreas Heise
- Department of Chemistry, RCSI University of Medicine and Health Science, Dublin, Ireland.,CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland Galway (NUIG) & RCSI, Galway, Ireland.,AMBER, The SFI Centre for Advanced Materials and Bioengineering, TCD & RCSI, Dublin, Ireland
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6
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Guiotto M, Raffoul W, Hart AM, Riehle MO, di Summa PG. Human Platelet Lysate Acts Synergistically With Laminin to Improve the Neurotrophic Effect of Human Adipose-Derived Stem Cells on Primary Neurons in vitro. Front Bioeng Biotechnol 2021; 9:658176. [PMID: 33816456 PMCID: PMC8017201 DOI: 10.3389/fbioe.2021.658176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 02/15/2021] [Indexed: 01/13/2023] Open
Abstract
Background Despite the advancements in microsurgical techniques and noteworthy research in the last decade, peripheral nerve lesions have still weak functional outcomes in current clinical practice. However, cell transplantation of human adipose-derived stem cells (hADSC) in a bioengineered conduit has shown promising results in animal studies. Human platelet lysate (hPL) has been adopted to avoid fetal bovine serum (FBS) in consideration of the biosafety concerns inherent with the use of animal-derived products in tissue processing and cell culture steps for translational purposes. In this work, we investigate how the interplay between hPL-expanded hADSC (hADSChPL) and extracellular matrix (ECM) proteins influences key elements of nerve regeneration. Methods hADSC were seeded on different ECM coatings (laminin, LN; fibronectin, FN) in hPL (or FBS)-supplemented medium and co-cultured with primary dorsal root ganglion (DRG) to establish the intrinsic effects of cell–ECM contact on neural outgrowth. Co-cultures were performed “direct,” where neural cells were seeded in contact with hADSC expanded on ECM-coated substrates (contact effect), or “indirect,” where DRG was treated with their conditioned medium (secretome effect). Brain-derived nerve factor (BDNF) levels were quantified. Tissue culture plastic (TCPS) was used as the control substrate in all the experiments. Results hPL as supplement alone did not promote higher neurite elongation than FBS when combined with DRG on ECM substrates. However, in the presence of hADSC, hPL could dramatically enhance the stem cell effect with increased DRG neurite outgrowth when compared with FBS conditions, regardless of the ECM coating (in both indirect and direct co-cultures). The role of ECM substrates in influencing neurite outgrowth was less evident in the FBS conditions, while it was significantly amplified in the presence of hPL, showing better neural elongation in LN conditions when compared with FN and TCPS. Concerning hADSC growth factor secretion, ELISA showed significantly higher concentrations of BDNF when cells were expanded in hPL compared with FBS-added medium, without significant differences between cells cultured on the different ECM substrates. Conclusion The data suggest how hADSC grown on LN and supplemented with hPL could be active and prone to support neuron–matrix interactions. hPL enhanced hADSC effects by increasing both proliferation and neurotrophic properties, including BDNF release.
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Affiliation(s)
- Martino Guiotto
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland.,Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, United Kingdom
| | - Wassim Raffoul
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Andrew M Hart
- Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, United Kingdom.,Canniesburn Plastic Surgery Unit, Glasgow Royal Infirmary, Glasgow, United Kingdom
| | - Mathis O Riehle
- Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, United Kingdom
| | - Pietro G di Summa
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
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7
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Porras Hernández AM, Pohlit H, Sjögren F, Shi L, Ossipov D, Antfolk M, Tenje M. A simplified approach to control cell adherence on biologically derived in vitro cell culture scaffolds by direct UV-mediated RGD linkage. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:89. [PMID: 33057798 PMCID: PMC7560931 DOI: 10.1007/s10856-020-06446-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 09/30/2020] [Indexed: 05/11/2023]
Abstract
In this work, we present a method to fabricate a hyaluronic acid (HA) hydrogel with spatially controlled cell-adhesion properties based on photo-polymerisation cross-linking and functionalization. The approach utilises the same reaction pathway for both steps meaning that it is user-friendly and allows for adaptation at any stage during the fabrication process. Moreover, the process does not require any additional cross-linkers. The hydrogel is formed by UV-initiated radical addition reaction between acrylamide (Am) groups on the HA backbone. Cell adhesion is modulated by functionalising the adhesion peptide sequence arginine-glycine-aspartate onto the hydrogel surface via radical mediated thiol-ene reaction using the non-reacted Am groups. We show that 10 × 10 µm2 squares could be patterned with sharp features and a good resolution. The smallest area that could be patterned resulting in good cell adhesion was 25 × 25 µm2 squares, showing single-cell adhesion. Mouse brain endothelial cells adhered and remained in culture for up to 7 days on 100 × 100 µm2 square patterns. We see potential for this material combination for future use in novel organ-on-chip models and tissue engineering where the location of the cells is of importance and to further study endothelial cell biology.
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Affiliation(s)
- A M Porras Hernández
- Science for Life Laboratory, Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
| | - H Pohlit
- Science for Life Laboratory, Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
| | - F Sjögren
- Science for Life Laboratory, Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
| | - L Shi
- Department of Chemistry-Ångström, Uppsala University, Uppsala, Sweden
| | - D Ossipov
- Department of Chemistry-Ångström, Uppsala University, Uppsala, Sweden
- Department of Biosciences and Nutrition (BioNut), Karolinska Institutet, Huddinge, Sweden
| | - M Antfolk
- BRIC-Biotech Research and Innovation Centre, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - M Tenje
- Science for Life Laboratory, Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden.
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8
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Du J, Chen H, Qing L, Yang X, Jia X. Biomimetic neural scaffolds: a crucial step towards optimal peripheral nerve regeneration. Biomater Sci 2018; 6:1299-1311. [PMID: 29725688 PMCID: PMC5978680 DOI: 10.1039/c8bm00260f] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Peripheral nerve injury is a common disease that affects more than 20 million people in the United States alone and remains a major burden to society. The current gold standard treatment for critical-sized nerve defects is autologous nerve graft transplantation; however, this method is limited in many ways and does not always lead to satisfactory outcomes. The limitations of autografts have prompted investigations into artificial neural scaffolds as replacements, and some neural scaffold devices have progressed to widespread clinical use; scaffold technology overall has yet to be shown to be consistently on a par with or superior to autografts. Recent advances in biomimetic scaffold technologies have opened up many new and exciting opportunities, and novel improvements in material, fabrication technique, scaffold architecture, and lumen surface modifications that better reflect biological anatomy and physiology have independently been shown to benefit overall nerve regeneration. Furthermore, biomimetic features of neural scaffolds have also been shown to work synergistically with other nerve regeneration therapy strategies such as growth factor supplementation, stem cell transplantation, and cell surface glycoengineering. This review summarizes the current state of neural scaffolds, highlights major advances in biomimetic technologies, and discusses future opportunities in the field of peripheral nerve regeneration.
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Affiliation(s)
- Jian Du
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Huanwen Chen
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Liming Qing
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Xiuli Yang
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
| | - Xiaofeng Jia
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA. ; Tel: +1 410-706-5025
- Department of Orthopedics, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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9
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Luca A, Fonta C, Raffoul W, Summa P, Lacour S. In vitro evaluation of gel‐encapsulated adipose derived stem cells: Biochemical cues for in vivo peripheral nerve repair. J Tissue Eng Regen Med 2017; 12:676-686. [DOI: 10.1002/term.2486] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 05/15/2017] [Accepted: 05/19/2017] [Indexed: 12/13/2022]
Affiliation(s)
- A.C. Luca
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Centre for NeuroprostheticsÉcole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland
| | - C.M. Fonta
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Centre for NeuroprostheticsÉcole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland
| | - W. Raffoul
- Department of Plastic, Reconstructive and Hand SurgeryUniversity Hospital of Lausanne (CHUV) Lausanne Switzerland
| | - P.G. Summa
- Department of Plastic, Reconstructive and Hand SurgeryUniversity Hospital of Lausanne (CHUV) Lausanne Switzerland
| | - S.P. Lacour
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Centre for NeuroprostheticsÉcole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland
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10
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Korin E, Froumin N, Cohen S. Surface Analysis of Nanocomplexes by X-ray Photoelectron Spectroscopy (XPS). ACS Biomater Sci Eng 2017; 3:882-889. [PMID: 33429560 DOI: 10.1021/acsbiomaterials.7b00040] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Self-assembled nanocomplexes composed of individual molecules that spontaneously connect via noncovalent interactions have recently emerged as versatile alternatives to conventional controlled drug delivery systems because of their unique bioinspired properties (responsiveness, dynamics, etc.). Characterization of such nanocomplexes typically includes their size distribution, surface charge, morphology, drug entrapment efficiency, and verification of the coexistence of labeled components within the nanocomplexes using a colocalization study. Less common is the direct examination of the molecular interactions between the different components in the coassembled nanocomplex, especially in nanocomplexes composed of hygroscopic components, because convenient methods are still lacking. Here, we present a detailed experimental protocol for determining the surface composition and the chemical bonds by X-ray photoelectron spectroscopy (XPS) after drying the deposit hygroscopic sample overnight under UHV. We applied this method to investigate the surface chemistry of binary Ca2+-siRNA nanocomplexes and ternary nanocomplexes of hyaluronan-sulfate (HAS)-Ca2+-siRNA, deposited on a wafer. Notably, we showed that the protocol can be implemented to study the surface composition and interactions of the deposited nanocomplexes with a traditional XPS instrument, and it requires only a relatively small amount of the nanocomplex suspension.
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Affiliation(s)
- Efrat Korin
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, ‡Department of Materials Engineering, §The Ilse Katz Institute for Nanoscale Science and Technology, and ∥Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Natalya Froumin
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Department of Materials Engineering, §The Ilse Katz Institute for Nanoscale Science and Technology, and ∥Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Smadar Cohen
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Department of Materials Engineering, The Ilse Katz Institute for Nanoscale Science and Technology, and ∥Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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11
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Advances in peripheral nervous system regenerative therapeutic strategies: A biomaterials approach. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 65:425-32. [DOI: 10.1016/j.msec.2016.04.048] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 02/20/2016] [Accepted: 04/14/2016] [Indexed: 01/02/2023]
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12
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Li BB, Yin YX, Yan QJ, Wang XY, Li SP. A novel bioactive nerve conduit for the repair of peripheral nerve injury. Neural Regen Res 2016; 11:150-5. [PMID: 26981105 PMCID: PMC4774210 DOI: 10.4103/1673-5374.175062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The use of a nerve conduit provides an opportunity to regulate cytokines, growth factors and neurotrophins in peripheral nerve regeneration and avoid autograft defects. We constructed a poly-D-L-lactide (PDLLA)-based nerve conduit that was modified using poly{(lactic acid)-co-[(glycolic acid)-alt-(L-lysine)]} and β-tricalcium phosphate. The effectiveness of this bioactive PDLLA-based nerve conduit was compared to that of PDLLA-only conduit in the nerve regeneration following a 10-mm sciatic nerve injury in rats. We observed the nerve morphology in the early period of regeneration, 35 days post injury, using hematoxylin-eosin and methylene blue staining. Compared with the PDLLA conduit, the nerve fibers in the PDLLA-based bioactive nerve conduit were thicker and more regular in size. Muscle fibers in the soleus muscle had greater diameters in the PDLLA bioactive group than in the PDLLA only group. The PDLLA-based bioactive nerve conduit is a promising strategy for repair after sciatic nerve injury.
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Affiliation(s)
- Bin-Bin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Yi-Xia Yin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Qiong-Jiao Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Xin-Yu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
| | - Shi-Pu Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei Province, China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, Hubei Province, China
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13
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Pires LR, Pêgo AP. Bridging the lesion-engineering a permissive substrate for nerve regeneration. Regen Biomater 2015; 2:203-14. [PMID: 26816642 PMCID: PMC4669012 DOI: 10.1093/rb/rbv012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 07/21/2015] [Accepted: 06/30/2015] [Indexed: 01/30/2023] Open
Abstract
Biomaterial-based strategies to restore connectivity after lesion at the spinal cord are focused on bridging the lesion and providing an favourable substrate and a path for axonal re-growth. Following spinal cord injury (SCI) a hostile environment for neuronal cell growth is established by the activation of multiple inhibitory mechanisms that hamper regeneration to occur. Implantable scaffolds can provide mechanical support and physical guidance for axon re-growth and, at the same time, contribute to alleviate the hostile environment by the in situ delivery of therapeutic molecules and/or relevant cells. Basic research on SCI has been contributing with the description of inhibitory mechanisms for regeneration as well as identifying drugs/molecules that can target inhibition. This knowledge is the background for the development of combined strategies with biomaterials. Additionally, scaffold design is significantly evolving. From the early simple hollow conduits, scaffolds with complex architectures that can modulate cell fate are currently being tested. A number of promising pre-clinical studies combining scaffolds, cells, drugs and/or nucleic acids are reported in the open literature. Overall, it is considered that to address the multi-factorial inhibitory environment of a SCI, a multifaceted therapeutic approach is imperative. The progress in the identification of molecules that target inhibition after SCI and its combination with scaffolds and/or cells are described and discussed in this review.
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Affiliation(s)
- Liliana R. Pires
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal
- Faculdade de Engenharia—Universidade do Porto (FEUP), Porto, Portugal and
| | - Ana P. Pêgo
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal
- Faculdade de Engenharia—Universidade do Porto (FEUP), Porto, Portugal and
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
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14
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Yin Y, Li B, Yan Q, Dai H, Wang X, Huang J, Li S. Promotion of peripheral nerve regeneration and prevention of neuroma formation by PRGD/PDLLA/β-TCP conduit: report of two cases. Regen Biomater 2015; 2:119-24. [PMID: 26816636 PMCID: PMC4669023 DOI: 10.1093/rb/rbv006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 04/01/2015] [Accepted: 04/02/2015] [Indexed: 12/25/2022] Open
Abstract
In the field of nerve repair, one major challenge is the formation of neuroma. However, reports on both the promotion of nerve regeneration and prevention of traumatic neuroma in the clinical settings are rare in the field of nerve repair. One of the reasons could be the insufficiency in the follow-up system. We have conducted 33 cases of nerve repair using PRGD/PDLLA/β-TCP conduit without any sign of adverse reaction, especially no neuroma formation. Among them, we have selected two cases as representatives to report in this article. The first case was a patient with an upper limb nerve wound was bridged by PRGD/PDLLA/β-TCP conduit and a plate fixation was given. After nearly 3-years’ follow-up, the examination results demonstrated that nerve regeneration effect was very good. When the reoperation was performed to remove the steel plate we observed a uniform structure of the regenerated nerve without the formation of neuroma, and to our delight, the implanted conduit was completely degraded 23 months after the implantation. The second case had an obsolete nerve injury with neuroma formation. After removal of the neuroma, the nerve was bridged by PRGD/PDLLA/β-TCP conduit. Follow-up examinations showed that the structure and functional recovery were improved gradually in the 10-month follow-up; no end-enlargement and any other abnormal reaction associated with the characteristic of neuroma were found. Based on our 33-case studies, we have concluded that PRGD/PDLLA/β-TCP nerve conduit could both promote nerve regeneration and prevent neuroma formation; therefore, it is a good alternative for peripheral nerve repair.
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Affiliation(s)
- Yixia Yin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
| | - Binbin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
| | - Qiongjiao Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
| | - Xinyu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
| | - Jifeng Huang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
| | - Shipu Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China and Department of Orthopedic Surgery, Wuhan General Hospital of Guangzhou Military Command, Wuhan, 430070, China
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15
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Li B, Qiu T, Iyer KS, Yan Q, Yin Y, Xie L, Wang X, Li S. PRGD/PDLLA conduit potentiates rat sciatic nerve regeneration and the underlying molecular mechanism. Biomaterials 2015; 55:44-53. [PMID: 25934451 DOI: 10.1016/j.biomaterials.2015.03.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 03/09/2015] [Accepted: 03/15/2015] [Indexed: 02/01/2023]
Abstract
Peripheral nerve injury requires optimal conditions in both macro-environment and micro-environment for reestablishment. Though various strategies have been carried out to improve the macro-environment, the underlying molecular mechanism of axon regeneration in the micro-environment provided by nerve conduit remains unclear. In this study, the rat sciatic nerve of 10 mm defect was made and bridged by PRGD/PDLLA nerve conduit. We investigated the process of nerve regeneration using histological, functional and real time PCR analyses after implantation from 7 to 35 days. Our data demonstrated that the ciliary neurotrophic factor highly expressed and up-regulated the downstream signaling pathways, in the case of activated signals, the expressions of axon sprout relative proteins, such as tubulin and growth-associated protein-43, were strongly augmented. Taken together, these data suggest a possible mechanism of axon regeneration promoted by PRGD/PDLLA conduit, which created a micro-environment for enhancement of diffusion of neurotrophic factors secreted by the injured nerve stumps, and activation of molecular signal transduction involved in growth cone, to potentiate the nerve recovery.
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Affiliation(s)
- Binbin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China
| | - Tong Qiu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China.
| | - K Swaminathan Iyer
- School of Chemistry and Biochemistry, The University of Western Australia, Crawley WA 6009, Australia
| | - Qiongjiao Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China
| | - Yixia Yin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China
| | - Lijuan Xie
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China
| | - Xinyu Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China
| | - Shipu Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China; Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, PR China.
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16
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Stoppel WL, Ghezzi CE, McNamara SL, Black LD, Kaplan DL. Clinical applications of naturally derived biopolymer-based scaffolds for regenerative medicine. Ann Biomed Eng 2015; 43:657-80. [PMID: 25537688 PMCID: PMC8196399 DOI: 10.1007/s10439-014-1206-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 11/26/2014] [Indexed: 01/05/2023]
Abstract
Naturally derived polymeric biomaterials, such as collagens, silks, elastins, alginates, and fibrins are utilized in tissue engineering due to their biocompatibility, bioactivity, and tunable mechanical and degradation kinetics. The use of these natural biopolymers in biomedical applications is advantageous because they do not release cytotoxic degradation products, are often processed using environmentally-friendly aqueous-based methods, and their degradation rates within biological systems can be manipulated by modifying the starting formulation or processing conditions. For these reasons, many recent in vivo investigations and FDA-approval of new biomaterials for clinical use have utilized natural biopolymers as matrices for cell delivery and as scaffolds for cell-free support of native tissues. This review highlights biopolymer-based scaffolds used in clinical applications for the regeneration and repair of native tissues, with a focus on bone, skeletal muscle, peripheral nerve, cardiac muscle, and cornea substitutes.
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Affiliation(s)
- Whitney L. Stoppel
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Chiara E. Ghezzi
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Stephanie L. McNamara
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
- Cellular, Molecular and Developmental Biology Program, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA 02111, USA
- The Harvard/MIT MD-PhD Program, Harvard Medical School, Boston, MA 02115, USA
| | - Lauren D. Black
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
- Cellular, Molecular and Developmental Biology Program, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA 02111, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
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17
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de Luca AC, Lacour SP, Raffoul W, di Summa PG. Extracellular matrix components in peripheral nerve repair: how to affect neural cellular response and nerve regeneration? Neural Regen Res 2015; 9:1943-8. [PMID: 25598773 PMCID: PMC4283273 DOI: 10.4103/1673-5374.145366] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2014] [Indexed: 01/09/2023] Open
Abstract
Peripheral nerve injury is a serious problem affecting significantly patients’ life. Autografts are the “gold standard” used to repair the injury gap, however, only 50% of patients fully recover from the trauma. Artificial conduits are a valid alternative to repairing peripheral nerve. They aim at confining the nerve environment throughout the regeneration process, and providing guidance to axon outgrowth. Biocompatible materials have been carefully designed to reduce inflammation and scar tissue formation, but modifications of the inner lumen are still required in order to optimise the scaffolds. Biomicking the native neural tissue with extracellular matrix fillers or coatings showed great promises in repairing longer gaps and extending cell survival. In addition, extracellular matrix molecules provide a platform to further bind growth factors that can be released in the system over time. Alternatively, conduit fillers can be used for cell transplantation at the injury site, reducing the lag time required for endogenous Schwann cells to proliferate and take part in the regeneration process. This review provides an overview on the importance of extracellular matrix molecules in peripheral nerve repair.
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Affiliation(s)
- Alba C de Luca
- EPFL, Centre for Neuroprosthetics, Laboratory for Soft Bioelectronic Interfaces, Station 17, 1015 Lausanne, Switzerland
| | - Stephanie P Lacour
- EPFL, Centre for Neuroprosthetics, Laboratory for Soft Bioelectronic Interfaces, Station 17, 1015 Lausanne, Switzerland
| | - Wassim Raffoul
- Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Pietro G di Summa
- Department of Plastic, Reconstructive and Hand Surgery, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
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18
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Zheng J, Kontoveros D, Lin F, Hua G, Reneker DH, Becker ML, Willits RK. Enhanced Schwann cell attachment and alignment using one-pot "dual click" GRGDS and YIGSR derivatized nanofibers. Biomacromolecules 2015; 16:357-63. [PMID: 25479181 PMCID: PMC5953569 DOI: 10.1021/bm501552t] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Using metal-free click chemistry and oxime condensation methodologies, GRGDS and YIGSR peptides were coupled to random and aligned degradable nanofiber networks postelectrospinning in a one-pot reaction. The bound peptides are bioactive, as demonstrated by Schwann cell attachment and proliferation, and the inclusion of YIGSR with GRGDS alters the expression of the receptor for YIGSR. Additionally, aligned nanofibers act as a potential guidance cue by increasing the aspect ratio and aligning the actin filaments, which suggest that peptide-functionalized scaffolds would be useful to direct SCs for peripheral nerve regeneration.
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Affiliation(s)
- Jukuan Zheng
- Departments of ‡Polymer Science and §Biomedical Engineering, The University of Akron , Akron, Ohio 44325, United States
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19
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Qiu T, Yin Y, Li B, Xie L, Yan Q, Dai H, Wang X, Li S. PDLLA/PRGD/β-TCP conduits build the neurotrophin-rich microenvironment suppressing the oxidative stress and promoting the sciatic nerve regeneration. J Biomed Mater Res A 2014; 102:3734-43. [PMID: 24408878 DOI: 10.1002/jbm.a.35078] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 11/23/2013] [Accepted: 12/31/2013] [Indexed: 12/16/2022]
Abstract
A novel nerve guidance conduit comprising poly{(lactic acid)-co-[(glycolic acid)-alt-(l-lysine)]} (PRGD), poly (d,l-lactic acid) (PDLLA) and β-tricalcium phosphate (β-TCP) was constructed to facilitate the peripheral nerve regeneration. From the comparative study, PDLLA/PRGD/β-TCP conduit achieved the best recovery in regard of the ultrastructure observation and the SFI evaluation. At the first stage of the injury (7 days), the maximum expression augments in ZnSOD (6.4 folds) and GPX4 (6.8 folds) were observed in PDLLA/PRGD/β-TCP group; while striking rise in actin (6.8 folds), tubulin (5.6 folds), and ERM components expressions were observed later (35 days). Meanwhile, compared with PDLLA and PDLLA/PRGD conduits, PDLLA/PRGD/β-TCP conduits achieved the highest local nerve growth factor (NGF) content and an accumulating BDNF content. We speculated that addition of RGD and β-TCP in the composites were the main positive factors to build the microenvironment rich in NGF and BDNF, which help to counteract with the oxidative stress and to boost the cytoskeletal protein expressions. Therefore, PDLLA/PRGD/β-TCP could be promising composites used in peripheral nerve regeneration.
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Affiliation(s)
- Tong Qiu
- Biomedical Materials and Engineering Center, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
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20
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Stevens JS, de Luca AC, Downes S, Terenghi G, Schroeder SLM. Immobilisation of cell-binding peptides on poly-ε-caprolactone (PCL) films: A comparative XPS study of two chemical surface functionalisation methods. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5396] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joanna S. Stevens
- School of Chemical Engineering and Analytical Science; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Alba C. de Luca
- Blond McIndoe Laboratories, Regenerative Medicine, Institute of Inflammation and Repair; The University of Manchester, Manchester Academic Health Science Centre; Oxford Road Manchester M13 9PT UK
- School of Materials; The University of Manchester; Grosvenor Street Manchester M13 9PL UK
| | - Sandra Downes
- School of Materials; The University of Manchester; Grosvenor Street Manchester M13 9PL UK
| | - Giorgio Terenghi
- Blond McIndoe Laboratories, Regenerative Medicine, Institute of Inflammation and Repair; The University of Manchester, Manchester Academic Health Science Centre; Oxford Road Manchester M13 9PT UK
| | - Sven L. M. Schroeder
- School of Chemical Engineering and Analytical Science; The University of Manchester; Oxford Road Manchester M13 9PL UK
- School of Chemistry; The University of Manchester; Brunswick Street Manchester M13 9PL UK
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21
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de Luca AC, Faroni A, Downes S, Terenghi G. Differentiated adipose-derived stem cells act synergistically with RGD-modified surfaces to improve neurite outgrowth in a co-culture model. J Tissue Eng Regen Med 2013; 10:647-55. [PMID: 23950058 DOI: 10.1002/term.1804] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 05/29/2013] [Accepted: 07/15/2013] [Indexed: 11/11/2022]
Abstract
Peripheral nerve damage is a problem encountered after trauma and during surgery and the development of synthetic polymer conduits may offer a promising alternative to autografts. In order to improve the performance of the polymer to be used for nerve conduits, poly-ε-caprolactone (PCL) films were chemically functionalized with RGD moieties, using a chemical reaction previously developed. In vitro cultures of dissociated dorsal root ganglion (DRG) neurons provide a valid model to study different factors affecting axonal growth. In this work, DRG neurons were cultured on RGD-functionalized PCL films. Adult adipose-derived stem cells differentiated to Schwann cells (dASCs) were initially cultured on the functionalized PCL films, resulting in improved attachment and proliferation. dASCs were also co-cultured with DRG neurons on treated and untreated PCL to assess stimulation by dASCs on neurite outgrowth. Neuron response was generally poor on untreated PCL films, but long neurites were observed in the presence of dASCs or RGD moieties. A combination of the two factors enhanced even further neurite outgrowth, acting synergistically. Finally, in order to better understand the extracellular matrix (ECM)-cell interaction, a β1 integrin blocking experiment was carried out. Neurite outgrowth was not affected by the specific antibody blocking, showing that β1 integrin function can be compensated by other molecules present on the cell membrane. Copyright © 2013 John Wiley & Sons, Ltd.
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Affiliation(s)
- A C de Luca
- Blond McIndoe Laboratories, Regenerative Medicine, Institute of Inflammation and Repair, University of Manchester, UK.,School of Materials, University of Manchester, UK
| | - A Faroni
- Blond McIndoe Laboratories, Regenerative Medicine, Institute of Inflammation and Repair, University of Manchester, UK
| | - S Downes
- School of Materials, University of Manchester, UK
| | - G Terenghi
- Blond McIndoe Laboratories, Regenerative Medicine, Institute of Inflammation and Repair, University of Manchester, UK
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22
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Stevens JS, de Luca AC, Pelendritis M, Terenghi G, Downes S, Schroeder SLM. Quantitative analysis of complex amino acids and RGD peptides by X-ray photoelectron spectroscopy (XPS). SURF INTERFACE ANAL 2013. [DOI: 10.1002/sia.5261] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joanna S. Stevens
- School of Chemical Engineering and Analytical Science; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Alba C. de Luca
- Blond McIndoe Laboratories, School of Biomedicine; The University of Manchester, Manchester Academic Health Science Center; Oxford Road Manchester M13 9PT UK
- School of Materials; The University of Manchester; Grosvenor Street Manchester M13 9PL UK
| | - Michalis Pelendritis
- School of Chemical Engineering and Analytical Science; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Giorgio Terenghi
- Blond McIndoe Laboratories, School of Biomedicine; The University of Manchester, Manchester Academic Health Science Center; Oxford Road Manchester M13 9PT UK
| | - Sandra Downes
- School of Materials; The University of Manchester; Grosvenor Street Manchester M13 9PL UK
| | - Sven L. M. Schroeder
- School of Chemical Engineering and Analytical Science; The University of Manchester; Oxford Road Manchester M13 9PL UK
- School of Chemistry; The University of Manchester; Brunswick Street Manchester M13 9PL UK
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