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Zumbardo-Bacelis GA, Peponi L, Vargas-Coronado RF, Rodríguez-Velázquez E, Alatorre-Meda M, Chevallier P, Copes F, Mantovani D, Abraham GA, Cauich-Rodríguez JV. A Comparison of Three-Layer and Single-Layer Small Vascular Grafts Manufactured via the Roto-Evaporation Method. Polymers (Basel) 2024; 16:1314. [PMID: 38794507 PMCID: PMC11125268 DOI: 10.3390/polym16101314] [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: 03/26/2024] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
This study used the roto-evaporation technique to engineer a 6 mm three-layer polyurethane vascular graft (TVG) that mimics the architecture of human coronary artery native vessels. Two segmented polyurethanes were synthesized using lysine (SPUUK) and ascorbic acid (SPUAA), and the resulting materials were used to create the intima and adventitia layers, respectively. In contrast, the media layer of the TVG was composed of a commercially available polyurethane, Pearlbond 703 EXP. For comparison purposes, single-layer vascular grafts (SVGs) from individual polyurethanes and a polyurethane blend (MVG) were made and tested similarly and evaluated according to the ISO 7198 standard. The TVG exhibited the highest circumferential tensile strength and longitudinal forces compared to single-layer vascular grafts of lower thicknesses made from the same polyurethanes. The TVG also showed higher suture and burst strength values than native vessels. The TVG withstood up to 2087 ± 139 mmHg and exhibited a compliance of 0.15 ± 0.1%/100 mmHg, while SPUUK SVGs showed a compliance of 5.21 ± 1.29%/100 mmHg, akin to coronary arteries but superior to the saphenous vein. An indirect cytocompatibility test using the MDA-MB-231 cell line showed 90 to 100% viability for all polyurethanes, surpassing the minimum 70% threshold needed for biomaterials deemed cytocompatibility. Despite the non-cytotoxic nature of the polyurethane extracts when grown directly on the surface, they displayed poor fibroblast adhesion, except for SPUUK. All vascular grafts showed hemolysis values under the permissible limit of 5% and longer coagulation times.
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Affiliation(s)
- Gualberto Antonio Zumbardo-Bacelis
- Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 #130 x 32 y 34, Colonia Chuburná de Hidalgo, Mérida C.P. 97205, Mexico; (G.A.Z.-B.); (R.F.V.-C.)
- Department of Chemical Engineering, Laval University, Quebec, QC G1V 0A6, Canada
| | - Laura Peponi
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain
| | - Rossana Faride Vargas-Coronado
- Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 #130 x 32 y 34, Colonia Chuburná de Hidalgo, Mérida C.P. 97205, Mexico; (G.A.Z.-B.); (R.F.V.-C.)
| | - Eustolia Rodríguez-Velázquez
- Facultad de Odontología, Universidad Autónoma de Baja California, Tijuana 22390, Mexico;
- Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico
| | - Manuel Alatorre-Meda
- Centro de Graduados e Investigación en Química-Grupo de Biomateriales y Nanomedicina, CONAHCYT-Tecnológico Nacional de México, Instituto Tecnológico de Tijuana, Tijuana 22510, Mexico;
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec, QC G1V0A6, Canada; (P.C.)
| | - Francesco Copes
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec, QC G1V0A6, Canada; (P.C.)
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering (CRC-I), Department of Min-Met-Materials Engineering & CHU de Quebec Research Center, Laval University, Quebec, QC G1V0A6, Canada; (P.C.)
| | - Gustavo A. Abraham
- Research Institute for Materials Science and Technology, INTEMA (UNMdP-CONICET). Av. Colón 10850, Mar del Plata B7606BWV, Argentina
| | - Juan Valerio Cauich-Rodríguez
- Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43 #130 x 32 y 34, Colonia Chuburná de Hidalgo, Mérida C.P. 97205, Mexico; (G.A.Z.-B.); (R.F.V.-C.)
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Wang B, Wang X, Kenneth A, Drena A, Pacheco A, Kalvin L, Ibrahim ES, Rossi PJ, Thatcher K, Lincoln J. Developing small-diameter vascular grafts with human amniotic membrane: long-term evaluation of transplantation outcomes in a small animal model. Biofabrication 2023; 15. [PMID: 36626826 DOI: 10.1088/1758-5090/acb1da] [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: 10/05/2022] [Accepted: 01/10/2023] [Indexed: 01/11/2023]
Abstract
While current clinical utilization of large vascular grafts for vascular transplantation is encouraging, tissue engineering of small grafts still faces numerous challenges. This study aims to investigate the feasibility of constructing a small vascular graft from decellularized amniotic membranes (DAMs). DAMs were rolled around a catheter and each of the resulting grafts was crosslinked with (a) 0.1% glutaraldehyde; (b) 1-ethyl-3-(3-dimethylaminopropyl) crbodiimidehydro-chloride (20 mM)-N-hydroxy-succinimide (10 mM); (c) 0.5% genipin; and (d) no-crosslinking, respectively. Our results demonstrated the feasibility of using a rolling technique followed by lyophilization to transform DAM into a vessel-like structure. The genipin-crosslinked DAM graft showed an improved integrated structure, prolonged stability, proper mechanical property, and superior biocompatibility. After transplantation in rat abdominal aorta, the genipin-crosslinked DAM graft remained patent up to 16 months, with both endothelial and smooth muscle cell regeneration, which suggests that the genipin-crosslinked DAM graft has great potential to beimplementedas a small tissue engineered graft for futurevasculartransplantation.
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Affiliation(s)
- Bo Wang
- Joint Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Xiaolong Wang
- Joint Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Allen Kenneth
- Biomedical Resource Center, Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Alexander Drena
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States of America
| | - Arsenio Pacheco
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI 53211, United States of America
| | - Lindsey Kalvin
- Department of Medicine, Division of Cardiovascular Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Ei-Sayed Ibrahim
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Peter J Rossi
- Heart and Vascular Center, Froedtert Hospital, Milwaukee, WI 53226, United States of America
| | - Kaitlyn Thatcher
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Joy Lincoln
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
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3
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Shakeel A, Corridon PR. Mitigating challenges and expanding the future of vascular tissue engineering-are we there yet? Front Physiol 2023; 13:1079421. [PMID: 36685187 PMCID: PMC9846051 DOI: 10.3389/fphys.2022.1079421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/14/2022] [Indexed: 01/06/2023] Open
Affiliation(s)
- Adeeba Shakeel
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Peter R. Corridon
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates,Biomedical Engineering, Healthcare Engineering Innovation Center, Khalifa University, Abu Dhabi, United Arab Emirates,Center for Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates,*Correspondence: Peter R. Corridon,
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Gorodkov AY, Tsygankov YM, Shepelev AD, Krasheninnikov SV, Zhorzholiani ST, Agafonov AV, Mamagulashvili VG, Savinov DV, Tenchurin TK, Chvalun SN. Influence of γ-Radiation on Mechanical Stability to Cyclic Loads Tubular Elastic Matrix of the Aorta. J Funct Biomater 2022; 13:192. [PMID: 36278661 PMCID: PMC9624334 DOI: 10.3390/jfb13040192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/09/2022] [Accepted: 10/11/2022] [Indexed: 04/13/2024] Open
Abstract
A significant drawback of the rigid synthetic vascular prostheses used in the clinic is the mechanical mismatch between the implant and the prosthetic vessel. When placing prostheses with radial elasticity, in which this deficiency is compensated, the integration of the graft occurs more favorably, so that signs of cell differentiation appear in the prosthesis capsule, which contributes to the restoration of vascular tone and the possibility of vasomotor reactions. Aortic prostheses fabricated by electrospinning from a blend of copolymers of vinylidene fluoride with hexafluoropropylene (VDF/HFP) had a biomechanical behavior comparable to the native aorta. In the present study, to ensure mechanical stability in the conditions of a living organism, the fabricated blood vessel prostheses (BVP) were cross-linked with γ-radiation. An optimal absorbed dose of 0.3 MGy was determined. The obtained samples were implanted into the infrarenal aorta of laboratory animals-Landrace pigs. Histological studies have shown that the connective capsule that forms around the prosthesis has signs of high tissue organization. This is evidenced by the cells of the fibroblast series located in layers oriented along and across the prosthesis, similar to the orientation of cells in a biological arterial vessel.
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Affiliation(s)
- Alexander Yu. Gorodkov
- A.N. Bakulev National Medical Research Center for Cardiovascular Surgery, Rublevskoye Highway 135, 121552 Moscow, Russia
| | - Yuriy M. Tsygankov
- A.N. Bakulev National Medical Research Center for Cardiovascular Surgery, Rublevskoye Highway 135, 121552 Moscow, Russia
| | - Alexey D. Shepelev
- National Research Centre “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia
| | - Sergey V. Krasheninnikov
- National Research Centre “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia
| | - Shota T. Zhorzholiani
- A.N. Bakulev National Medical Research Center for Cardiovascular Surgery, Rublevskoye Highway 135, 121552 Moscow, Russia
| | - Andrey V. Agafonov
- A.N. Bakulev National Medical Research Center for Cardiovascular Surgery, Rublevskoye Highway 135, 121552 Moscow, Russia
| | | | - Dmitriy V. Savinov
- National Research Centre “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia
| | - Timur Kh. Tenchurin
- National Research Centre “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia
| | - Sergey N. Chvalun
- National Research Centre “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia
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Marzaro M, Pozzato G, Tedesco S, Algeri M, Pozzato A, Tomao L, Montano I, Torroni F, Balassone V, Contini ACI, Guerra L, D’Angelo T, Federici di Abriola G, Lupoi L, Caristo ME, Boškoski I, Costamagna G, Francalanci P, Astori G, Bozza A, Bagno A, Todesco M, Trovalusci E, Oglio LD, Locatelli F, Caldaro T. Decellularized esophageal tubular scaffold microperforated by quantum molecular resonance technology and seeded with mesenchymal stromal cells for tissue engineering esophageal regeneration. Front Bioeng Biotechnol 2022; 10:912617. [PMID: 36267444 PMCID: PMC9576845 DOI: 10.3389/fbioe.2022.912617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 08/17/2022] [Indexed: 11/25/2022] Open
Abstract
Current surgical options for patients requiring esophageal replacement suffer from several limitations and do not assure a satisfactory quality of life. Tissue engineering techniques for the creation of customized “self-developing” esophageal substitutes, which are obtained by seeding autologous cells on artificial or natural scaffolds, allow simplifying surgical procedures and achieving good clinical outcomes. In this context, an appealing approach is based on the exploitation of decellularized tissues as biological matrices to be colonized by the appropriate cell types to regenerate the desired organs. With specific regard to the esophagus, the presence of a thick connective texture in the decellularized scaffold hampers an adequate penetration and spatial distribution of cells. In the present work, the Quantum Molecular Resonance® (QMR) technology was used to create a regular microchannel structure inside the connective tissue of full-thickness decellularized tubular porcine esophagi to facilitate a diffuse and uniform spreading of seeded mesenchymal stromal cells within the scaffold. Esophageal samples were thoroughly characterized before and after decellularization and microperforation in terms of residual DNA content, matrix composition, structure and biomechanical features. The scaffold was seeded with mesenchymal stromal cells under dynamic conditions, to assess the ability to be repopulated before its implantation in a large animal model. At the end of the procedure, they resemble the original esophagus, preserving the characteristic multilayer composition and maintaining biomechanical properties adequate for surgery. After the sacrifice we had histological and immunohistochemical evidence of the full-thickness regeneration of the esophageal wall, resembling the native organ. These results suggest the QMR microperforated decellularized esophageal scaffold as a promising device for esophagus regeneration in patients needing esophageal substitution.
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Affiliation(s)
| | | | | | - Mattia Algeri
- Department of Pediatric Onco-Hematology and Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | | | - Luigi Tomao
- Department of Pediatric Onco-Hematology and Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Ilaria Montano
- Department of Pediatric Onco-Hematology and Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Filippo Torroni
- Digestive Endoscopy and Surgical Unit, Bambino Gesù Children’s Hospital, Rome, Italy
| | - Valerio Balassone
- Digestive Endoscopy and Surgical Unit, Bambino Gesù Children’s Hospital, Rome, Italy
| | | | - Luciano Guerra
- Digestive Endoscopy and Surgical Unit, Bambino Gesù Children’s Hospital, Rome, Italy
| | - Tommaso D’Angelo
- Digestive Endoscopy and Surgical Unit, Bambino Gesù Children’s Hospital, Rome, Italy
| | | | - Lorenzo Lupoi
- Cen.Ri.S. Policlinico Gemelli UNICATT Rome, Rome, Italy
| | | | - Ivo Boškoski
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Digestive Endoscopy Unit, Rome, Italy
- Università Cattolica del Sacro Cuore, Centre For Endoscopic Research Therapeutics and Training (CERTT), Rome, Italy—CERTT Gemelli, Rome, Italy
- *Correspondence: Ivo Boškoski,
| | - Guido Costamagna
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Digestive Endoscopy Unit, Rome, Italy
- Università Cattolica del Sacro Cuore, Centre For Endoscopic Research Therapeutics and Training (CERTT), Rome, Italy—CERTT Gemelli, Rome, Italy
| | | | - Giuseppe Astori
- Advanced Cellular Therapy Laboratory, Haematology Unit, San Bortolo Hospital, Vicenza, Italy
| | - Angela Bozza
- Advanced Cellular Therapy Laboratory, Haematology Unit, San Bortolo Hospital, Vicenza, Italy
- Consorzio Per la Ricerca Sanitaria (CORIS) of the Veneto Region, Padova, Italy
| | - Andrea Bagno
- Department of Industrial Engineering, University of Padova, Padova, Italy
| | - Martina Todesco
- Department of Industrial Engineering, University of Padova, Padova, Italy
| | - Emanuele Trovalusci
- Pediatric Surgery Department AULSS2 Treviso, University of Padova, Padova, Italy
| | - Luigi Dall’ Oglio
- Digestive Endoscopy and Surgical Unit, Bambino Gesù Children’s Hospital, Rome, Italy
| | - Franco Locatelli
- Department of Pediatric Onco-Hematology and Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- Department of Pediatrics, Sapienza University of Rome, Roma, Italy
| | - Tamara Caldaro
- Digestive Endoscopy and Surgical Unit, Bambino Gesù Children’s Hospital, Rome, Italy
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Zakeri Z, Salehi R, Mahkam M, Rahbarghazi R, Abbasi F, Rezaei M. Electrospun POSS integrated poly(carbonate-urea)urethane provides appropriate surface and mechanical properties for the fabrication of small-diameter vascular grafts. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1415-1434. [PMID: 35380915 DOI: 10.1080/09205063.2022.2059741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This study developed a platform for fabricating small-diameter vascular grafts using electrospun poly(carbonate-urea)urethane bonded with different concentrations of POSS nanocage. The characteristics of electrospun POSS-PCUUs were investigated by ATR-FTIR, 1HNMR, EDS, SEM, AFM, WCA, and DSC analyses. Besides, mechanical attributes such as tensile strength, modulus, elastic recovery, and inelastic behaviors were monitored. The survival rate and cellular attachment capacity were studied using human endothelial cells during a 7-day culture period. The results showed that electrospun nanofibers with 6 wt.% POSS-PCUU had better surface properties in terms of richness of POSS nanocage with notable improved mechanical strength and hysteresis loss properties (p < 0.05). The surface roughness of electrospun 6 wt.% POSS-PCUU reached 646 ± 10 nm with statistically significant differences compared to the control PCUU and groups containing 2, 4 wt.% POSS-PCUU (p < 0.05). The addition of 6 wt.% POSS increased the ultimate mechanical strength of nanofibers related to control PCUU and other groups (p < 0.05). The expansion of human endothelial cells on the 6 wt.% POSS-PCUU surface increased the viability reaching maximum levels on day 7 (p < 0.05). Immunofluorescence imaging using DAPI staining displayed the formation single-layer endothelial barrier at the luminal surface, indicating an appropriate cell-to-cell interaction.
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Affiliation(s)
- Ziba Zakeri
- Chemistry Department, Science Faculty, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Roya Salehi
- Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Mehrdad Mahkam
- Chemistry Department, Science Faculty, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Reza Rahbarghazi
- cStem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhang Abbasi
- Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Tabriz, Iran
| | - Mostafa Rezaei
- Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Tabriz, Iran
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Fortin W, Bouchet M, Therasse E, Maire M, Héon H, Ajji A, Soulez G, Lerouge S. Negative In Vivo Results Despite Promising In Vitro Data With a Coated Compliant Electrospun Polyurethane Vascular Graft. J Surg Res 2022; 279:491-504. [PMID: 35842974 DOI: 10.1016/j.jss.2022.05.032] [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: 04/13/2021] [Revised: 05/09/2022] [Accepted: 05/24/2022] [Indexed: 11/15/2022]
Abstract
INTRODUCTION There is a growing need for small-diameter (<6 mm) off-the-shelf synthetic vascular conduits for different surgical bypass procedures, with actual synthetic conduits showing unacceptable thrombosis rates. The goal of this study was to build vascular grafts with better compliance than standard synthetic conduits and with an inner layer stimulating endothelialization while remaining antithrombogenic. METHODS Tubular vascular conduits made of a scaffold of polyurethane/polycaprolactone combined with a bioactive coating based on chondroitin sulfate (CS) were created using electrospinning and plasma polymerization. In vitro testing followed by a comparative in vivo trial in a sheep model as bilateral carotid bypasses was performed to assess the conduits' performance compared to the actual standard. RESULTS In vitro, the novel small-diameter (5 mm) electrospun vascular grafts coated with chondroitin sulfate (CS) showed 10 times more compliance compared to commercial expanded polytetrafluoroethylene (ePTFE) conduits while maintaining adequate suturability, burst pressure profiles, and structural stability over time. The subsequent in vivo trial was terminated after electrospun vascular grafts coated with CS showed to be inferior compared to their expanded polytetrafluoroethylene counterparts. CONCLUSIONS The inability of the experimental conduits to perform well in vivo despite promising in vitro results may be related to the low porosity of the grafts and the lack of rapid endothelialization despite the presence of the CS coating. Further research is warranted to explore ways to improve electrospun polyurethane/polycaprolactone scaffold in order to make it prone to transmural endothelialization while being resistant to strenuous conditions.
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Affiliation(s)
- William Fortin
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; Department of Surgery, Hopital du Sacré-Coeur de Montreal, Montreal, Quebec, Canada
| | - Mélusine Bouchet
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; Department of Mechanical Engineering, École de technologie supérieure (ÉTS), Montreal, Quebec, Canada; CREPEC, Department of Chemical Engineering, École Polytechnique de Montréal, Montreal, Quebec, Canada
| | - Eric Therasse
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; Department of Radiology, Centre Hospitalier de l'Université de Montréal (CHUM), Quebec, Canada; Department of Radiology, Radiation Oncology and Nuclear Medicine, Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Marion Maire
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; Department of Mechanical Engineering, École de technologie supérieure (ÉTS), Montreal, Quebec, Canada
| | - Hélène Héon
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada
| | - Abdellah Ajji
- CREPEC, Department of Chemical Engineering, École Polytechnique de Montréal, Montreal, Quebec, Canada; Institute of Biomedical Engineering, École Polytechnique de Montréal, Montreal, Quebec, Canada
| | - Gilles Soulez
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; Department of Radiology, Centre Hospitalier de l'Université de Montréal (CHUM), Quebec, Canada; Department of Radiology, Radiation Oncology and Nuclear Medicine, Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Sophie Lerouge
- Research Centre, Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; Department of Mechanical Engineering, École de technologie supérieure (ÉTS), Montreal, Quebec, Canada; Department of Radiology, Radiation Oncology and Nuclear Medicine, Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada.
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Zhang Y, Zhang M, Cheng D, Xu S, Du C, Xie L, Zhao W. Applications of electrospun scaffolds with enlarged pores in tissue engineering. Biomater Sci 2022; 10:1423-1447. [DOI: 10.1039/d1bm01651b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite electrospinning has multiple advantages over other methods such as creating materials with superfine fiber diameter, high specific surface area, and good mechanical properties, the pore diameter of scaffolds prepared...
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9
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Durán-Rey D, Crisóstomo V, Sánchez-Margallo JA, Sánchez-Margallo FM. Systematic Review of Tissue-Engineered Vascular Grafts. Front Bioeng Biotechnol 2021; 9:771400. [PMID: 34805124 PMCID: PMC8595218 DOI: 10.3389/fbioe.2021.771400] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 10/18/2021] [Indexed: 01/01/2023] Open
Abstract
Pathologies related to the cardiovascular system are the leading causes of death worldwide. One of the main treatments is conventional surgery with autologous transplants. Although donor grafts are often unavailable, tissue-engineered vascular grafts (TEVGs) show promise for clinical treatments. A systematic review of the recent scientific literature was performed using PubMed (Medline) and Web of Science databases to provide an overview of the state-of-the-art in TEVG development. The use of TEVG in human patients remains quite restricted owing to the presence of vascular stenosis, existence of thrombi, and poor graft patency. A total of 92 original articles involving human patients and animal models were analyzed. A meta-analysis of the influence of the vascular graft diameter on the occurrence of thrombosis and graft patency was performed for the different models analyzed. Although there is no ideal animal model for TEVG research, the murine model is the most extensively used. Hybrid grafting, electrospinning, and cell seeding are currently the most promising technologies. The results showed that there is a tendency for thrombosis and non-patency in small-diameter grafts. TEVGs are under constant development, and research is oriented towards the search for safe devices.
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Affiliation(s)
- David Durán-Rey
- Laparoscopy Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
| | - Verónica Crisóstomo
- Cardiovascular Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain.,Centro de Investigacion Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan A Sánchez-Margallo
- Bioengineering and Health Technologies Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
| | - Francisco M Sánchez-Margallo
- Centro de Investigacion Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain.,Scientific Direction, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
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10
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Ramasamy P, Krishnakumar R, Rekha R, Vaseeharan B, Saraswathi K, Raj M, Hanna REB, Brennan GP, Dayanithi G, Vijayakumar S. Bio-Fabrication of Human Amniotic Membrane Zinc Oxide Nanoparticles and the Wet/Dry HAM Dressing Membrane for Wound Healing. Front Bioeng Biotechnol 2021; 9:695710. [PMID: 34395403 PMCID: PMC8355710 DOI: 10.3389/fbioe.2021.695710] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/25/2021] [Indexed: 01/25/2023] Open
Abstract
The preparation of unique wet and dry wound dressing products derived from unprocessed human amniotic membrane (UP-HAM) is described. The UP-HAM was decellularized, and the constituent proteins were cross-linked and stabilized before being trimmed and packed in sterile Nucril-coated laminated aluminium foil pouches with isopropyl alcohol to manufacture processed wet human amniotic membrane (PW-HAM). The dry type of PD-HAM was prepared by decellularizing the membrane, UV irradiating it, lyophilizing/freeze-drying it, sterilizing it, and storing it at room temperature. The UP-HAM consists of a translucent yellowish mass of flexible membranes with an average thickness of 42 μm. PW-HAM wound dressings that had been processed, decellularized, and dehydrated had a thinner average thickness of 30 μm and lacked nuclear-cellular structures. Following successful decellularization, discrete bundle of fibrous components in the stromal spongy layers, microvilli and reticular ridges were still evident on the surface of the processed HAM, possibly representing the location of the cells that had been removed by the decellularization process. Both wet and dry HAM wound dressings are durable, portable, have a shelf life of 3–5 years, and are available all year. A slice of HAM dressing costs 1.0 US$/cm2. Automation and large-scale HAM membrane preparation, as well as storage and transportation of the dressings, can all help to establish advanced technologies, improve the efficiency of membrane production, and reduce costs. Successful treatment of wounds to the cornea of the eye was achieved with the application of the HAM wound dressings. The HAM protein analysis revealed 360 μg proteins per gram of tissue, divided into three main fractions with MWs of 100 kDa, 70 kDa, and 14 kDa, as well as seven minor proteins, with the 14 kDa protein displaying antibacterial properties against human pathogenic bacteria. A wide range of antibacterial activity was observed after treatment with 75 μg/ml zinc oxide nanoparticles derived from human amniotic membrane proteins (HAMP-ZnO NP), including dose-dependent biofilm inhibition and inhibition of Gram-positive (S. aureus, S. mutans, E. faecalis, and L. fusiformis) and Gram-negative bacteria (S. sonnei, P. aeruginosa, P. vulgaris, and C. freundii).
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Affiliation(s)
- Palaniappan Ramasamy
- Research and Development Wing, Central Research Laboratory, Sree Balaji Medical College and Hospital, BIHER, Chennai, India
| | | | - Ravichandran Rekha
- Department of Animal Health and Management, Alagappa University, Karaikudi, India
| | | | - K Saraswathi
- Department of Obstetrics and Gynaecology, Sree Balaji Medical College and Hospital, BIHER, Chennai, India
| | - Mohan Raj
- Department of Ophthalmology, Sree Balaji Medical College and Hospital, BIHER, Chennai, India
| | - Robert E B Hanna
- School of Biology and Biochemistry, The Queen's University of Belfast, Belfast, United Kingdom.,Veterinary Science Division, AgrI-Food and Biosciences Institute, Belfast, United Kingdom
| | - Gerard P Brennan
- School of Biology and Biochemistry, The Queen's University of Belfast, Belfast, United Kingdom
| | - Govindan Dayanithi
- Research and Development Wing, Central Research Laboratory, Sree Balaji Medical College and Hospital, BIHER, Chennai, India.,Molecular Mechanisms in Neurodegenerative Diseases Laboratory, MMDN, University of Montpellier, L'École Pratique des Hautes Etudes-Sorbonne, INSERM, UMR-S1198, Montpellier Cedex 5, France
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11
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Applications of Human Amniotic Membrane for Tissue Engineering. MEMBRANES 2021; 11:membranes11060387. [PMID: 34070582 PMCID: PMC8227127 DOI: 10.3390/membranes11060387] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 12/17/2022]
Abstract
An important component of tissue engineering (TE) is the supporting matrix upon which cells and tissues grow, also known as the scaffold. Scaffolds must easily integrate with host tissue and provide an excellent environment for cell growth and differentiation. Human amniotic membrane (hAM) is considered as a surgical waste without ethical issue, so it is a highly abundant, cost-effective, and readily available biomaterial. It has biocompatibility, low immunogenicity, adequate mechanical properties (permeability, stability, elasticity, flexibility, resorbability), and good cell adhesion. It exerts anti-inflammatory, antifibrotic, and antimutagenic properties and pain-relieving effects. It is also a source of growth factors, cytokines, and hAM cells with stem cell properties. This important source for scaffolding material has been widely studied and used in various areas of tissue repair: corneal repair, chronic wound treatment, genital reconstruction, tendon repair, microvascular reconstruction, nerve repair, and intraoral reconstruction. Depending on the targeted application, hAM has been used as a simple scaffold or seeded with various types of cells that are able to grow and differentiate. Thus, this natural biomaterial offers a wide range of applications in TE applications. Here, we review hAM properties as a biocompatible and degradable scaffold. Its use strategies (i.e., alone or combined with cells, cell seeding) and its degradation rate are also presented.
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12
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Dai CF, Zhang XN, Du C, Frank A, Schmidt HW, Zheng Q, Wu ZL. Photoregulated Gradient Structure and Programmable Mechanical Performances of Tough Hydrogels with a Hydrogen-Bond Network. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53376-53384. [PMID: 33170639 DOI: 10.1021/acsami.0c17198] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Gradient materials exist widely in natural living organisms, affording fascinating biological and mechanical properties. However, the synthetic gradient hydrogels are usually mechanically weak or only have relatively simple gradient structures. Here, we report on tough nanocomposite hydrogels with designable gradient network structure and mechanical properties by a facile post-photoregulation strategy. Poly(1-vinylimidazole-co-methacrylic acid) hydrogels containing gold nanorods (AuNRs) are in a glassy state and show typical yielding and forced elastic deformation at room temperature. The gel slightly contracts its volume when the temperature is above the glass-transition temperature that results in a collapse of the chain segments and formation of denser intra- and interchain hydrogen bonds. Consequently, the mechanical properties of the gels are enhanced, when the temperature returns to room temperature. The mechanical performances of hydrogels can also be locally tuned by near-infrared light irradiation due to the photothermal effect of AuNRs. Hydrogels with arbitrary two-dimensional gradients can be facilely developed by site-specific photoirradiation. The treated and untreated regions with different stiffness and yielding stress possess construct behaviors in stretching or twisting deformations. A locally reinforced hydrogel with the kirigami structure becomes notch-insensitive and exhibits improved strength and stretchability because the treated regions ahead the cuts have better resistance to crack advancement. These tough hydrogels with programmable gradient structure and mechanics should find applications as structural elements, biological devices, etc.
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Affiliation(s)
- Chen Fei Dai
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xin Ning Zhang
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Cong Du
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Andreas Frank
- Department of Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Bayreuth 95440, Germany
| | - Hans-Werner Schmidt
- Department of Macromolecular Chemistry I and Bavarian Polymer Institute, University of Bayreuth, Bayreuth 95440, Germany
| | - Qiang Zheng
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zi Liang Wu
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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13
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An atorvastatin calcium and poly(L-lactide-co-caprolactone) core-shell nanofiber-covered stent to treat aneurysms and promote reendothelialization. Acta Biomater 2020; 111:102-117. [PMID: 32442783 DOI: 10.1016/j.actbio.2020.04.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 01/05/2023]
Abstract
Aneurysmal subarachnoid hemorrhage is a common complication caused by an intracranial aneurysm that can lead to hemorrhagic stroke, brain damage, and death. Knowing this clinical situation, the purpose of this study was to develop a controlled-release stent covered with a core-shell nanofiber mesh, fabricated by emulsion electrospinning, for the treatment of aneurysms. By encapsulating atorvastatin calcium (AtvCa) in the inner of poly (L-lactide-co-caprolactone) (PLCL) nanofibers, the release period of AtvCa was effectively extended. The morphology and inner structure of the core-shell nanofibers were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. The release of AtvCa from the nanofiber system continued for more than ten weeks without a significant initial burst release. The nanofiber mesh structure degraded gradually but maintained its fiber morphology before neovascularization. The results of this study further elucidated the reendothelialization mechanism of AtvCa by analyzing the nitric oxide (NO) expression from seeded HUVECs. The in vivo studies demonstrated that the PLCL-AtvCa covered stents were capable of separating the aneurysm dome from the blood circulation, leading to the abolishment of the aneurysm. Moreover, the AtvCa controlled release promoted the in vitro proliferation of HUVECs on the nanofiber meshes, and the PLCL-AtvCa covered stents induced in vivo neovascularization. STATEMENT OF SIGNIFICANCE: Intracranial aneurysms are pathological dilatations of blood vessels that have developed an abnormally weak wall structure, thus prone to rupture. Covered stents had been demonstrated to be a method for the treatment of intracranial aneurysm. We prepared a controlled-release stent covered with a core-shell nanofiber mesh, fabricated by emulsion electrospinning, which encapsulated atorvastatin calcium in the inner portion of nanofibers. The results of this study further elucidated the reendothelialization mechanism of AtvCa by analyzing the nitric oxide (NO) expression from seeded HUVECs. The generated AtvCa-load covered stents separated the aneurysm dome from the blood circulation, and keep long-term patency of the parent artery. But also induced neovascularization, thus provide further protection against recurrence of aneurysms after nanofiber meshes degradation.
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Mao Y, Zhao Y, Guan J, Guan J, Ye T, Chen Y, Zhu Y, Zhou P, Cui W. Electrospun fibers: an innovative delivery method for the treatment of bone diseases. Expert Opin Drug Deliv 2020; 17:993-1005. [PMID: 32394737 DOI: 10.1080/17425247.2020.1767583] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION The treatment performances of current surgical therapeutic materials for injuries caused by high-energy trauma, such as prolonged bone defects, nerve-fiber disruptions, and repeated spasms or adhesions of vascular tendons after repair, are poor. Drug-loaded electrospun fibers have become a novel polymeric material for treating orthopedic diseases owing to their three-dimensional structures, thus providing excellent controlled drug-release responses and high affinity with local tissues. Herein, we reviewed the morphology of electrospun nanofibers, methods for loading drugs on the fibers, and modification methods to improve drug permeability and bioavailability. We highlight innovative applications of drug-loaded electrospun fibers in different treatments, including bone and cartilage defects, tendon and soft-tissue adhesion, vascular remodeling, skin grafting, and nervous-system injuries. AREAS COVERED With the rapid development of electrospinning technologies and advancement of tissue engineering, drug-loaded electrospun fibers are becoming increasingly important in controlled drug release, wound closure, and tissue regeneration and repair. EXPERT OPINION Drug-loaded electrospun fibers exhibit a broad range of application prospects and great potential in treating orthopedic diseases. Accordingly, a plethora of novel treatments utilizing the different morphological features of electrospun fibers, the distinctive pharmacokinetics, pharmacodynamics characteristics of different drugs, and the diverse onset characteristics of different diseases, is proposed.
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Affiliation(s)
- Yingji Mao
- Department of Orthopedics, First Affiliated Hospital of Bengbu Medical College , Bengbu, P.R. China.,School of Life Science, Bengbu Medical College , Bengbu, P. R. China.,Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College , Bengbu, P. R. China
| | - Yupeng Zhao
- Department of Orthopedics, First Affiliated Hospital of Bengbu Medical College , Bengbu, P.R. China.,Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College , Bengbu, P. R. China
| | - Jingjing Guan
- Department of Orthopedics, First Affiliated Hospital of Bengbu Medical College , Bengbu, P.R. China
| | - Jianzhong Guan
- Department of Orthopedics, First Affiliated Hospital of Bengbu Medical College , Bengbu, P.R. China
| | - Tingjun Ye
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, P. R. China
| | - Yu Chen
- Department of Orthopedics, First Affiliated Hospital of Bengbu Medical College , Bengbu, P.R. China.,School of Life Science, Bengbu Medical College , Bengbu, P. R. China
| | - Yansong Zhu
- School of Life Science, Bengbu Medical College , Bengbu, P. R. China
| | - Pinghui Zhou
- Department of Orthopedics, First Affiliated Hospital of Bengbu Medical College , Bengbu, P.R. China.,Anhui Province Key Laboratory of Tissue Transplantation, Bengbu Medical College , Bengbu, P. R. China
| | - Wenguo Cui
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai, P. R. China
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Cordelle J, Mantero S. Insight on the endothelialization of small silk-based tissue-engineered vascular grafts. Int J Artif Organs 2020; 43:631-644. [DOI: 10.1177/0391398820906547] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Along with an increased incidence of cardiovascular diseases, there is a strong need for small-diameter vascular grafts. Silk has been investigated as a biomaterial to develop such grafts thanks to different processing options. Endothelialization was shown to be extremely important to ensure graft patency and there is ongoing research on the development and behavior of endothelial cells on vascular tissue-engineered scaffolds. This article reviews the endothelialization of silk-based scaffolds processed throughout the years as silk non-woven nets, films, gel spun, electrospun, or woven scaffolds. Encouraging results were reported with these scaffolds both in vitro and in vivo when implanted in small- to middle-sized animals. The use of coatings and heparin or sulfur to enhance, respectively, cell adhesion and scaffold hemocompatibility is further presented. Bioreactors also showed their interest to improve cell adhesion and thus promoting in vitro pre-endothelialization of grafts even though they are still not systematically used. Finally, the importance of the animal models used to study the right mechanism of endothelialization is discussed.
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Affiliation(s)
| | - Sara Mantero
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta,” Politecnico di Milano, Milan, Italy
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16
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Afra S, Matin MM. Potential of mesenchymal stem cells for bioengineered blood vessels in comparison with other eligible cell sources. Cell Tissue Res 2020; 380:1-13. [PMID: 31897835 DOI: 10.1007/s00441-019-03161-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 12/12/2019] [Indexed: 12/14/2022]
Abstract
Application of stem cells in tissue engineering has proved to be effective in many cases due to great proliferation and differentiation potentials as well as possible paracrine effects of these cells. Human mesenchymal stem cells (MSCs) are recognized as a valuable source for vascular tissue engineering, which requires endothelial and perivascular cells. The goal of this review is to survey the potential of MSCs for engineering functional blood vessels in comparison with other cell types including bone marrow mononuclear cells, endothelial precursor cells, differentiated adult autologous smooth muscle cells, autologous endothelial cells, embryonic stem cells, and induced pluripotent stem cells. In conclusion, MSCs represent a preference in making autologous tissue-engineered vascular grafts (TEVGs) as well as off-the-shelf TEVGs for emergency vascular surgery cases.
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Affiliation(s)
- Simindokht Afra
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Maryam M Matin
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
- Novel Diagnostics and Therapeutics Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
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Doostmohammadi M, Forootanfar H, Ramakrishna S. Regenerative medicine and drug delivery: Progress via electrospun biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 109:110521. [PMID: 32228899 DOI: 10.1016/j.msec.2019.110521] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 02/07/2023]
Abstract
Worldwide research on electrospinning enabled it as a versatile technique for producing nanofibers with specified physio-chemical characteristics suitable for diverse biomedical applications. In the case of tissue engineering and regenerative medicine, the nanofiber scaffolds' characteristics are custom designed based on the cells and tissues specific needs. This fabrication technique is also innovated for the production of nanofibers with special micro-structure and secondary structure characteristics such as porous fibers, hollow structure, and core- sheath structure. This review attempts to critically and succinctly capture the vast number of developments reported in the literature over the past two decades. We then discuss their applications as scaffolds for induction of cells growth and differentiation or as architecture for being used as graft for tissue engineering. The special nanofibers designed for improving regeneration of several tissues including heart, bone, central nerve system, spinal cord, skin and ocular tissue are introduced. We also discuss the potential of the electrospinning in drug delivery applications, which is a critical factor for cell culture, tissue formation and wound healing applications.
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Affiliation(s)
- Mohsen Doostmohammadi
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Hamid Forootanfar
- Pharmaceutical Sciences and Cosmetic Products Research Center, Kerman University of Medical Sciences, Kerman, Iran; Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore.
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18
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Engineered delivery strategies for enhanced control of growth factor activities in wound healing. Adv Drug Deliv Rev 2019; 146:190-208. [PMID: 29879493 DOI: 10.1016/j.addr.2018.06.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/18/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022]
Abstract
Growth factors (GFs) are versatile signalling molecules that orchestrate the dynamic, multi-stage process of wound healing. Delivery of exogenous GFs to the wound milieu to mediate healing in an active, physiologically-relevant manner has shown great promise in laboratories; however, the inherent instability of GFs, accompanied with numerous safety, efficacy and cost concerns, has hindered the clinical success of GF delivery. In this article, we highlight that the key to overcoming these challenges is to enhance the control of the activities of GFs throughout the delivering process. We summarise the recent strategies based on biomaterials matrices and molecular engineering, which aim to improve the conditions of GFs for delivery (at the 'supply' end of the delivery), increase the stability and functions of GFs in extracellular matrix (in transportation to target cells), as well as enhance the GFs/receptor interaction on the cell membrane (at the 'destination' end of the delivery). Many of these investigations have led to encouraging outcomes in various in vitro and in vivo regenerative models with considerable translational potential.
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19
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Angioplasty Using 4-Hexylresorcinol-Incorporated Silk Vascular Patch in Rat Carotid Defect Model. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8122388] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to evaluate and compare the efficacy of 4-hexylresorcinol (4-HR)-incorporated silk as a vascular patch scaffold to that of the commercial polytetrafluoroethylene (PTFE) vascular patch (GORE® ACUSEAL). The expression of the vascular endothelial cell growth factor-A (VEGF-A) after application of 4-HR was studied in RAW264.7 and HUVEC cells. In the animal study, a carotid artery defect was modeled in Sprague Dawley rats (n = 30). The defect was directly closed in the control group (n = 10), or repaired with the PTFE or 4-HR silk patch in the experimental groups (n = 10 per group). Following patch angioplasty, angiography was performed and the peak systolic velocity (PSV) was measured to evaluate the artery patency. The application of 4-HR was shown to increase the expression of VEGF-A in RAW264.7 and HUVEC cells. The successful artery patency rate was 80% for the 4-HR silk group, 30% for the PTFE group, and 60% for the control group. The PSV of the 4-HR silk group was significantly different from that of the control group at one week and three weeks post-angioplasty (p = 0.005 and 0.024). Histological examination revealed new regeneration of the arterial wall, and that the arterial diameter was well maintained in the 4-HR silk group in the absence of an immune reaction. In contrast, an overgrowth of endothelium was observed in the PTFE group. In this study, the 4-HR silk patch was successfully used as a vascular patch, and achieved a higher vessel patency rate and lower PSV than the PTFE patch.
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Radke D, Jia W, Sharma D, Fena K, Wang G, Goldman J, Zhao F. Tissue Engineering at the Blood-Contacting Surface: A Review of Challenges and Strategies in Vascular Graft Development. Adv Healthc Mater 2018; 7:e1701461. [PMID: 29732735 PMCID: PMC6105365 DOI: 10.1002/adhm.201701461] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/09/2018] [Indexed: 12/14/2022]
Abstract
Tissue engineered vascular grafts (TEVGs) are beginning to achieve clinical success and hold promise as a source of grafting material when donor grafts are unsuitable or unavailable. Significant technological advances have generated small-diameter TEVGs that are mechanically stable and promote functional remodeling by regenerating host cells. However, developing a biocompatible blood-contacting surface remains a major challenge. The TEVG luminal surface must avoid negative inflammatory responses and thrombogenesis immediately upon implantation and promote endothelialization. The surface has therefore become a primary focus for research and development efforts. The current state of TEVGs is herein reviewed with an emphasis on the blood-contacting surface. General vascular physiology and developmental challenges and strategies are briefly described, followed by an overview of the materials currently employed in TEVGs. The use of biodegradable materials and stem cells requires careful control of graft composition, degradation behavior, and cell recruitment ability to ensure that a physiologically relevant vessel structure is ultimately achieved. The establishment of a stable monolayer of endothelial cells and the quiescence of smooth muscle cells are critical to the maintenance of patency. Several strategies to modify blood-contacting surfaces to resist thrombosis and control cellular recruitment are reviewed, including coatings of biomimetic peptides and heparin.
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Affiliation(s)
- Daniel Radke
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
| | - Wenkai Jia
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
| | - Dhavan Sharma
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
| | - Kemin Fena
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
| | - Guifang Wang
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
| | - Jeremy Goldman
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
| | - Feng Zhao
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, U.S
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21
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Bioprinted gelatin hydrogel platform promotes smooth muscle cell contractile phenotype maintenance. Biomed Microdevices 2018; 20:32. [PMID: 29594704 DOI: 10.1007/s10544-018-0274-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Three dimensional (3D) bioprinting has been proposed as a method for fabricating tissue engineered small diameter vascular prostheses. This technique not only involves constructing the structural features to obtain a desired pattern but the morphology of the pattern may also be used to influence the behavior of seeded cells. Herein, we 3D bioprinted a gelatin hydrogel microchannel construct to promote and preserve the contractile phenotype of vascular smooth muscle cells (vSMCs), which is crucial for vasoresponsiveness. The microchanneled surface of a gelatin hydrogel facilitated vSMC attachment and an elongated alignment along the microchannel direction. The cells displayed distinct F-actin anisotropy in the direction of the channel. The vSMC contractile phenotype was confirmed by the positive detection of contractile marker gene proteins (α-smooth muscle actin (α-SMA) and smooth muscle-myosin heavy chain (SM-MHC)). Having demonstrated the effectiveness of the hydrogel channels bioprinted on a film, the bioprinting was applied radially to the surface of a 3D tubular construct by integrating a rotating mandrel into the 3D bioprinter. The hydrogel microchannels printed on the 3D tubular vascular construct also orientated the vSMCs and strongly promoted the contractile phenotype. Together, our study demonstrated that microchannels bioprinted using a transglutaminase crosslinked gelatin hydrogel, could successfully promote and preserve vSMC contractile phenotype. Furthermore, the hydrogel bioink could be retained on the surface of a rotating polymer tube to print radial cell guiding channels onto a vascular graft construct.
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In-vitro in-vivo correlation (IVIVC) in nanomedicine: Is protein corona the missing link? Biotechnol Adv 2017; 35:889-904. [DOI: 10.1016/j.biotechadv.2017.08.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/04/2017] [Accepted: 08/19/2017] [Indexed: 12/17/2022]
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23
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Asvar Z, Mirzaei E, Azarpira N, Geramizadeh B, Fadaie M. Evaluation of electrospinning parameters on the tensile strength and suture retention strength of polycaprolactone nanofibrous scaffolds through surface response methodology. J Mech Behav Biomed Mater 2017; 75:369-378. [DOI: 10.1016/j.jmbbm.2017.08.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 08/01/2017] [Accepted: 08/02/2017] [Indexed: 11/17/2022]
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Ju YM, Ahn H, Arenas-Herrera J, Kim C, Abolbashari M, Atala A, Yoo JJ, Lee SJ. Electrospun vascular scaffold for cellularized small diameter blood vessels: A preclinical large animal study. Acta Biomater 2017. [PMID: 28642016 DOI: 10.1016/j.actbio.2017.06.027] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The strategy of vascular tissue engineering is to create a vascular substitute by combining autologous vascular cells with a tubular-shaped biodegradable scaffold. We have previously developed a novel electrospun bilayered vascular scaffold that provides proper biological and biomechanical properties as well as structural configuration. In this study, we investigated the clinical feasibility of a cellularized vascular scaffold in a preclinical large animal model. We fabricated the cellularized vascular construct with autologous endothelial progenitor cell (EPC)-derived endothelial cells (ECs) and smooth muscle cells (SMCs) followed by a pulsatile bioreactor preconditioning. This fully cellularized vascular construct was tested in a sheep carotid arterial interposition model. After preconditioning, confluent and mature EC and SMC layers in the scaffold were achieved. The cellularized constructs sustained the structural integrity with a high degree of graft patency without eliciting an inflammatory response over the course of the 6-month period in sheep. Moreover, the matured EC coverage on the lumen and a thick smooth muscle layer were formed at 6months after transplantation. We demonstrated that electrospun bilayered vascular scaffolds in conjunction with autologous vascular cells may be a clinically applicable alternative to traditional prosthetic vascular graft substitutes. STATEMENT OF SIGNIFICANCE This study demonstrates the utility of tissue engineering to provide platform technologies for rehabilitation of patients recovering from severe, devastating cardiovascular diseases. The long-term goal is to provide alternatives to vascular grafting using bioengineered blood vessels derived from an autologous cell source with a functionalized vascular scaffold. This novel bilayered vascular construct for engineering blood vessels is designed to offer "off-the-shelf" availability for clinical translation.
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Affiliation(s)
- Young Min Ju
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Hyunhee Ahn
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Juan Arenas-Herrera
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Cheil Kim
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Mehran Abolbashari
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - James J Yoo
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA.
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Haga M, Yamamoto S, Okamoto H, Hoshina K, Asakura T, Watanabe T. Histological Reactions and the In Vivo Patency Rates of Small Silk Vascular Grafts in a Canine Model. Ann Vasc Dis 2017; 10:132-138. [PMID: 29034039 PMCID: PMC5579779 DOI: 10.3400/avd.oa.16-00118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 03/28/2017] [Indexed: 01/08/2023] Open
Abstract
Objective: To evaluate in vivo patency rates of silk fibroin (SF) vascular grafts and resulting histological reactions in a canine model. Methods: To generate 3.5-mm inner diameter vessels, a combination of plaited silk fibers were wound with cocoon filaments and subsequently coated with an SF solution. The resulting SF grafts (n=35) were implanted into the carotid arteries of male beagles (age, 1-2 years; body weight: 9.0-10.5 kg). Expanded polytetrafluoroethylene (4-mm inner diameter, ePTFE) grafts (n=5) were used as controls. Graft patency was monitored via ultrasonography with histological changes analyzed via microscopic examination. Results: Compared with animals that received the ePTFE grafts, animals that received SF grafts exhibited the same thickness of luminal layers and fibrin accumulation and collagen fiber replacement with endothelialization at 3 months post-implantation via histological examination. The patency rates of the SF and the ePTFE grafts at 6 months post-implantation were 7.8% and 0%, respectively. Conclusion: This canine model study demonstrated that SF grafts induce unique histological reactions but fail to achieve long-term patency.
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Affiliation(s)
- Makoto Haga
- Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Satoshi Yamamoto
- Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Okamoto
- Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Katsuyuki Hoshina
- Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tetsuro Asakura
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Toshiaki Watanabe
- Division of Vascular Surgery, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Merlin Rajesh Lal LP, Suraishkumar GK, Nair PD. Chitosan-agarose scaffolds supports chondrogenesis of Human Wharton's Jelly mesenchymal stem cells. J Biomed Mater Res A 2017; 105:1845-1855. [DOI: 10.1002/jbm.a.36054] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 02/22/2017] [Accepted: 02/27/2017] [Indexed: 11/11/2022]
Affiliation(s)
- L. P. Merlin Rajesh Lal
- Department of Biotechnology; IIT Madras; Chennai Tamil Nadu 600036 India
- Division of Tissue Engineering and Regeneration Technologies; Sree Chitra Tirunal Institute for Medical Sciences and Technology; BMT Wing Trivandrum Kerala 695012 India
| | - G. K. Suraishkumar
- Division of Tissue Engineering and Regeneration Technologies; Sree Chitra Tirunal Institute for Medical Sciences and Technology; BMT Wing Trivandrum Kerala 695012 India
| | - Prabha D. Nair
- Division of Tissue Engineering and Regeneration Technologies; Sree Chitra Tirunal Institute for Medical Sciences and Technology; BMT Wing Trivandrum Kerala 695012 India
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Mohan R, Bajaj A, Gundappa M. Human Amnion Membrane: Potential Applications in Oral and Periodontal Field. J Int Soc Prev Community Dent 2017; 7:15-21. [PMID: 28316944 PMCID: PMC5343678 DOI: 10.4103/jispcd.jispcd_359_16] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/24/2017] [Indexed: 12/19/2022] Open
Abstract
Human amniotic membrane (HAM) is derived from the fetal membranes which consist of the inner amniotic membrane made of single layer of amnion cells fixed to collagen-rich mesenchyme attached to chorion. HAM has low immunogenicity, anti-inflammatory properties and their cells can be isolated without the sacrifice of human embryos. Amniotic membrane has biological properties which are important for the experimental and clinical applications in managing patients of various medical specialties. Abundant, natural and wonderful biomembrane not only protects the foetus but also has various clinical applications in the field of dermatology, ophthalmology, ENT surgery, orthopedics and dental surgery. As it is discarded post-partum it may be useful for regenerative medicine and cell therapy to treat damaged or diseased tissues.
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Affiliation(s)
- Ranjana Mohan
- Department of Periodontics, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Aashima Bajaj
- Department of Periodontics, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Mohan Gundappa
- Department of Conservative Dentistry and Endodontics, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India
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28
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Bosio VE, Brown J, Rodriguez MJ, Kaplan DL. Biodegradable Porous Silk Microtubes for Tissue Vascularization. J Mater Chem B 2016; 5:1227-1235. [PMID: 28944059 DOI: 10.1039/c6tb02712a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cardiovascular diseases are the leading cause of mortality around the globe, and microvasculature replacements to help stem these diseases are not available. Additionally, some vascular surgeries needing small diameter vascular grafts present different performance requirements. In this work silk fibroin scaffolds based on silk/polyethylene oxide blends were developed as microtubes for vasculature needs and for different tissue regeneration times, mechanical properties and structural designs. Systems with 13, 14 and 15% silk alone or blended with 1 or 2% of polyethylene oxide (PEO) were used to generate porous microtubes using gel-spinning. Microtubes with inner diameters (ID) of 150-300 μm and 100 μm wall thickness were fabricated. The systems were assessed for porosity, mechanical properties, enzymatic degradability, and in vitro vascular endothelial cell attachment and metabolic activity. After 14 days all tubes supported the proliferation of cells and cell attachment increased with porosity. The silk tubes with PEO had similar crystallinity but higher elastic modulus compared with the systems without PEO. The silk (13%)/PEO (1%) system showed the highest porosity (20 μm pore diameters on average), highest cell attachment and fastest degradation profile. There was a good correlation between these parameters with silk concentration and the presence of PEO. The results demonstrate the ability to generate versatile and tunable tubular biomaterials based on silk-PEO-blends with potential for microvascular grafts.
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Affiliation(s)
- V E Bosio
- Institute of Applied Biotechnology CINDEFI (CCT La Plata-CONICET, U.N.L.P.), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115, 1900 La Plata, Argentina.,Department of Biomedical Engineering, Tufts University, Medford, MA02155, USA
| | - J Brown
- Department of Biomedical Engineering, Tufts University, Medford, MA02155, USA
| | - M J Rodriguez
- Department of Biomedical Engineering, Tufts University, Medford, MA02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA02155, USA
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Yu E, Zhang J, Thomson JA, Turng LS. Fabrication and Characterization of Electrospun Thermoplastic Polyurethane/Fibroin Small-Diameter Vascular Grafts for Vascular Tissue Engineering. ACTA ACUST UNITED AC 2016; 31:638-646. [PMID: 29033499 DOI: 10.3139/217.3247] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The demand for small-diameter blood vessel substitutes has been increasing due to a shortage of autograft vessels and problems with thrombosis and intimal hyperplasia with synthetic grafts. In this study, hybrid small-diameter vascular grafts made of thermoplastic polyurethane (TPU) and silk fibroin, which possessed a hybrid fibrous structure of an aligned inner layer and a random outer layer, were fabricated by the electrospinning technique using a customized striated collector that generated both aligned and random fibers simultaneously. A methanol post-treatment process induced the transition of fibroin protein conformation from the water-soluble, amorphous, and less ordered structures to the water-insoluble β-sheet structures that possessed robust mechanical properties and relatively slow proteolytic degradation. The methanol post-treatment also created crimped fibers that mimicked the wavy structure of collagen fibers in natural blood vessels. Ultrafine nanofibers and nanowebs were found on the electrospun TPU/fibroin samples, which effectively increased the surface area for cell adhesion and migration. Cyclic circumferential tensile test results showed compatible mechanical properties for grafts made of a soft TPU/fibroin blend compared to human coronary arteries. In addition, cell culture tests with endothelial cells after 6 and 60 days of culture exhibited high cell viability and good biocompatibility of TPU/fibroin grafts, suggesting the potential of applying electrospun TPU/fibroin grafts in vascular tissue engineering.
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Affiliation(s)
- E Yu
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA.,Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA
| | - J Zhang
- Morgridge Institute for Research, Madison, WI, USA
| | - J A Thomson
- Morgridge Institute for Research, Madison, WI, USA
| | - L-S Turng
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA.,Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA
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Pashneh-Tala S, MacNeil S, Claeyssens F. The Tissue-Engineered Vascular Graft-Past, Present, and Future. TISSUE ENGINEERING PART B-REVIEWS 2015; 22:68-100. [PMID: 26447530 PMCID: PMC4753638 DOI: 10.1089/ten.teb.2015.0100] [Citation(s) in RCA: 437] [Impact Index Per Article: 48.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cardiovascular disease is the leading cause of death worldwide, with this trend predicted to continue for the foreseeable future. Common disorders are associated with the stenosis or occlusion of blood vessels. The preferred treatment for the long-term revascularization of occluded vessels is surgery utilizing vascular grafts, such as coronary artery bypass grafting and peripheral artery bypass grafting. Currently, autologous vessels such as the saphenous vein and internal thoracic artery represent the gold standard grafts for small-diameter vessels (<6 mm), outperforming synthetic alternatives. However, these vessels are of limited availability, require invasive harvest, and are often unsuitable for use. To address this, the development of a tissue-engineered vascular graft (TEVG) has been rigorously pursued. This article reviews the current state of the art of TEVGs. The various approaches being explored to generate TEVGs are described, including scaffold-based methods (using synthetic and natural polymers), the use of decellularized natural matrices, and tissue self-assembly processes, with the results of various in vivo studies, including clinical trials, highlighted. A discussion of the key areas for further investigation, including graft cell source, mechanical properties, hemodynamics, integration, and assessment in animal models, is then presented.
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Affiliation(s)
- Samand Pashneh-Tala
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield , Broad Lane, Sheffield, United Kingdom
| | - Sheila MacNeil
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield , Broad Lane, Sheffield, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield , Broad Lane, Sheffield, United Kingdom
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31
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Popovici D, Barzic AI, Barzic RF, Vasilescu DS, Hulubei C. Semi-alicyclic polyimide precursors: structural, optical and biointerface evaluations. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1495-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Thrombogenicity and biocompatibility studies of reduced graphene oxide modified acellular pulmonary valve tissue. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 53:310-21. [DOI: 10.1016/j.msec.2015.04.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 01/31/2015] [Accepted: 04/24/2015] [Indexed: 12/12/2022]
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33
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Othman R, E Morris G, Shah DA, Hall S, Hall G, Wells K, Shakesheff KM, Dixon JE. An automated fabrication strategy to create patterned tubular architectures at cell and tissue scales. Biofabrication 2015; 7:025003. [DOI: 10.1088/1758-5090/7/2/025003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Ahn H, Ju YM, Takahashi H, Williams DF, Yoo JJ, Lee SJ, Okano T, Atala A. Engineered small diameter vascular grafts by combining cell sheet engineering and electrospinning technology. Acta Biomater 2015; 16:14-22. [PMID: 25641646 DOI: 10.1016/j.actbio.2015.01.030] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 12/16/2014] [Accepted: 01/08/2015] [Indexed: 12/11/2022]
Abstract
Tissue engineering offers an attractive approach to creating functional small-diameter (<5mm) blood vessels by combining autologous cells with a natural and/or synthetic scaffold under suitable culture conditions, which results in a tubular construct that can be implanted in vivo. We have previously developed a vascular scaffold fabricated by electrospinning poly(ε-caprolactone) (PCL) and type I collagen that mimics the structural and biomechanical properties of native vessels. In this study, we investigated whether a smooth muscle cell (SMC) sheet could be combined with the electrospun vascular scaffolds to produce a more mature smooth muscle layer as compared to the conventional cell seeding method. The pre-fabricated SMC sheet, wrapped around the vascular scaffold, provided high cell seeding efficiency (approx. 100%) and a mature smooth muscle layer that expressed strong cell-to-cell junction, connexin 43 (CX43), and contractile proteins, α smooth muscle actin (α-SMA) and myosin light chain kinase (MLCK). Moreover, bioreactor-associated preconditioning of the SMC sheet-combined vascular scaffold maintained high cell viability (95.9 ± 2.7%) and phenotypes and improved cellular infiltration and mechanical properties (35.7% of tensile strength, 47.5% of elasticity, and 113.2% of elongation at break).
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35
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Elahi MF, Guan G, Wang L, Zhao X, Wang F, King MW. Surface modification of silk fibroin fabric using layer-by-layer polyelectrolyte deposition and heparin immobilization for small-diameter vascular prostheses. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2517-2526. [PMID: 25671295 DOI: 10.1021/la504503w] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
There is an urgent need to develop a biologically active implantable small-diameter vascular prosthesis with long-term patency. Silk-fibroin-based small-diameter vascular prosthesis is a promising candidate having higher patency rate; however, the surface modification is indeed required to improve its further hemocompatibility. In this study, silk fibroin fabric was modified by a two-stage process. First, the surface of silk fibroin fabric was coated using a layer-by-layer polyelectrolyte deposition technique by stepwise dipping the silk fibroin fabric into a solution of cationic poly(allylamine hydrochloride) (PAH) and anionic poly(acrylic acid) (PAA) solution. The dipping procedure was repeated to obtain the PAH/PAA multilayers deposited on the silk fibroin fabrics. Second, the polyelectrolyte-deposited silk fibroin fabrics were treated in EDC/NHS-activated low-molecular-weight heparin (LMWH) solution at 4 °C for 24 h, resulting in immobilization of LMWH on the silk fibroin fabrics surface. Scanning electron microscopy, atomic force microscopy, and energy-dispersive X-ray data revealed the accomplishment of LMWH immobilization on the polyelectrolyte-deposited silk fibroin fabric surface. The higher the number of PAH/PAA coating layers on the silk fibroin fabric, the more surface hydrophilicity could be obtained, resulting in a higher fetal bovine serum protein and platelets adhesion resistance properties when tested in vitro. In addition, compared with untreated sample, the surface-modified silk fibroin fabrics showed negligible loss of bursting strength and thus reveal the acceptability of polyelectrolytes deposition and heparin immobilization approach for silk-fibroin-based small-diameter vascular prostheses modification.
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Affiliation(s)
- M Fazley Elahi
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University , 2999 North Renmin Road, Songjiang, Shanghai 201620, China
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Jin G, Li Y, Prabhakaran MP, Tian W, Ramakrishna S. In vitro and in vivo evaluation of the wound healing capability of electrospun gelatin/PLLCL nanofibers. J BIOACT COMPAT POL 2014. [DOI: 10.1177/0883911514553525] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent progress in tissue-engineered skin grafts has alleviated the demand for autologous split thickness skin grafts for treatment of large skin wounds. In this study, a series of cost-effective nanofibrous scaffolds aimed at full-thickness wound healing are fabricated by blending gelatin (Gel) with poly(l-lactic acid)-b-poly( ε-caprolactone) (PLLCL) and electrospun to obtain composite Gel/PLLCL nanofibers in four different weight ratios (w/w) of 80:20 [Gel/PLLCL(20)], 70:30 [Gel/PLLCL(30)], 60:40 [Gel/PLLCL(40)], and 50:50 [Gel/PLLCL(50)]. The mechanical properties of these nanofibrous scaffolds were evaluated in both dry and wet conditions, and the Gel/PLLCL(40) retained suitable tensile stress (1.16 ± 0.03 MPa) to be handled even in wet conditions. Moreover, the proliferations of fibroblast cells on Gel/PLLCL(40) were 15%, 7% and 10% higher compared to cell proliferations on Gel/PLLCL(20), Gel/PLLCL(30), and Gel/PLLCL(50), respectively. In vitro results confirmed Gel/PLLCL(40) as the optimized scaffold composition suitable for skin tissue engineering. The healing ability of this scaffold was studied in vivo using mouse models. The Gel/PLLCL(40) greatly accelerated wound closure and regeneration occurring in the first 10 days of implantation compared to the control group. In addition, newly regenerated epidermis was only found in the nanofibrous scaffolds–treated group, and it was comparable to the epidermis of normal skin.
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Affiliation(s)
- Guorui Jin
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
| | - Yong Li
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin, P.R. China
| | - Molamma P Prabhakaran
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
| | - Weiming Tian
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin, P.R. China
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
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Duan HY, Ye L, Wu X, Guan Q, Yang XF, Han F, Liang N, Wang ZF, Wang ZG. The in vivo characterization of electrospun heparin-bonded polycaprolactone in small-diameter vascular reconstruction. Vascular 2014; 23:358-65. [PMID: 25208900 DOI: 10.1177/1708538114550737] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective To evaluate the possibility of using heparin-bonded polycaprolactone grafts to replace small-diameter arteries. Methods Polycaprolactone was bonded with heparin. The activated partial thromboplastin time of heparin-bonded polycaprolactone grafts was determined in vitro. Small-diameter grafts were electrospun with heparin-bonded polycaprolactone and polycaprolactone and were implanted in dogs to substitute part of the femoral artery. Angiography was used to investigate the patency and aneurysm of the grafts after transplantation. After angiography, the patent grafts were explanted for histology analysis. The degradation of the grafts and the collagen content of the grafts were measured. Results Activated partial thromboplastin time tests in vitro showed that heparin-bonded polycaprolactone grafts exhibit obvious anticoagulation. Arteriography showed that two heparin-bonded polycaprolactone and three polycaprolactone grafts were obstructed. Other grafts were patent, without aneurysm formation. Histological analysis showed that the tested grafts degraded evidently over the implantation time and that the luminal surface of the tested grafts had become covered by endothelial cells. Collagen deposition in heparin-bonded polycaprolactone increased with time. There were no calcifications in the grafts. Gel permeation chromatography showed the heparin-bonded polycaprolactone explants at 12 weeks lose about 32% for Mw and 24% for Mn. The collagen content on the heparin-bonded polycaprolactone grafts increased over time. Conclusion This preliminary study demonstrates that heparin-bonded polycaprolactone is a suitable graft for small artery reconstruction. However, heparin-bonded polycaprolactone degrades more rapidly than polycaprolactone in vivo.
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Affiliation(s)
- Hong-Yong Duan
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Xin Wu
- Department of Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing, PR China
| | - Qiang Guan
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Xiao-Fei Yang
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Feng Han
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Ning Liang
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Zhen-Feng Wang
- Department of Vascular Surgery, Shanxi Provincial People’s Hospital, Taiyuan, PR China
| | - Zhong-Gao Wang
- Department of Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing, PR China
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Guiding the behaviors of human umbilical vein endothelial cells with patterned silk fibroin films. Colloids Surf B Biointerfaces 2014; 122:79-84. [PMID: 25016547 DOI: 10.1016/j.colsurfb.2014.06.049] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/31/2014] [Accepted: 06/23/2014] [Indexed: 11/23/2022]
Abstract
Silk fibroin is an ideal blood vessel substitute due to its advantageous qualities including variable size, good suture retention, low thrombogenicity, non-toxicity, non-immunogenicity, biocompatibility, and controllable biodegradation. In this study, silk fibroin films with a variety of surface patterns (e.g. square wells, round wells plus square pillars, square pillars, and gratings) were prepared for in vitro characterization of human umbilical vein endothelial cell's (HUVEC) response. The affects of biomimetic length-scale topographic cues on the cell orientation/elongation, proliferation, and cell-substrate interactions have been investigated. The density of cells is significantly decreased in response to the grating patterns (70±3nm depth, 600±8nm pitch) and the square pillars (333±42nm gap). Most notably, we observed the contact guidance response of filopodia of cells cultured on the surface of round wells plus square pillars. Overall, our data demonstrates that the patterned silk fibroin films have an impact on the behaviors of human umbilical vein endothelial cells.
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39
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Elahi MF, Guan G, Wang L, King MW. Improved hemocompatibility of silk fibroin fabric using layer-by-layer polyelectrolyte deposition and heparin immobilization. J Appl Polym Sci 2014. [DOI: 10.1002/app.40772] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- M. Fazley Elahi
- Key Laboratory of Textile Science and Technology; Ministry of Education, College of Textiles, Donghua University; Songjiang District Shanghai 201620 China
| | - Guoping Guan
- Key Laboratory of Textile Science and Technology; Ministry of Education, College of Textiles, Donghua University; Songjiang District Shanghai 201620 China
| | - Lu Wang
- Key Laboratory of Textile Science and Technology; Ministry of Education, College of Textiles, Donghua University; Songjiang District Shanghai 201620 China
| | - Martin W. King
- Key Laboratory of Textile Science and Technology; Ministry of Education, College of Textiles, Donghua University; Songjiang District Shanghai 201620 China
- College of Textiles, North Carolina State University; Raleigh North Carolina 27695-8301
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Elahi MF, Guan G, Wang L, King MW. Influence of Layer-by-Layer Polyelectrolyte Deposition and EDC/NHS Activated Heparin Immobilization onto Silk Fibroin Fabric. MATERIALS 2014; 7:2956-2977. [PMID: 28788601 PMCID: PMC5453351 DOI: 10.3390/ma7042956] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 03/25/2014] [Accepted: 03/31/2014] [Indexed: 01/07/2023]
Abstract
To enhance the hemocompatibility of silk fibroin fabric as biomedical material, polyelectrolytes architectures have been assembled through the layer-by-layer (LbL) technique on silk fibroin fabric (SFF). In particular, 1.5 and 2.5 bilayer of oppositely charged polyelectrolytes were assembled onto SFF using poly(allylamine hydrochloride) (PAH) as polycationic polymer and poly(acrylic acid) (PAA) as polyanionic polymer with PAH topmost. Low molecular weight heparin (LMWH) activated with 1-ethyl-3-(dimethylaminopropyl) carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) was then immobilized on its surface. Alcian Blue staining, toluidine blue assay and X-ray photoelectron spectroscopy (XPS) confirmed the presence of heparin on modified SFF surfaces. The surface morphology of the modified silk fibroin fabric surfaces was characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM), and obtained increased roughness. Negligible hemolytic effect and a higher concentration of free hemoglobin by a kinetic clotting time test ensured the improved biological performance of the modified fibroin fabric. Overall, the deposition of 2.5 bilayer was found effective in terms of biological and surface properties of the modified fibroin fabric compared to 1.5 bilayer self-assembly technique. Therefore, this novel approach to surface modification may demonstrate long term patency in future in vivo animal trials of small diameter silk fibroin vascular grafts.
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Affiliation(s)
- M Fazley Elahi
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Songjiang District, Shanghai 201620, China.
| | - Guoping Guan
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Songjiang District, Shanghai 201620, China.
| | - Lu Wang
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Songjiang District, Shanghai 201620, China.
| | - Martin W King
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Songjiang District, Shanghai 201620, China.
- College of Textiles, North Carolina State University, Raleigh, NC 27695-8301, USA.
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Lee SJ, Yoo JJ, Atala A. Recent Applications of Polymeric Biomaterials and Stem Cells in Tissue Engineering and Regenerative Medicine. POLYMER-KOREA 2014. [DOI: 10.7317/pk.2014.38.2.113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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42
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Combining cell sheet technology and electrospun scaffolding for engineered tubular, aligned, and contractile blood vessels. Biomaterials 2014; 35:2713-9. [DOI: 10.1016/j.biomaterials.2013.12.035] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 12/13/2013] [Indexed: 12/20/2022]
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43
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Vascular Tissue Engineering: Recent Advances in Small Diameter Blood Vessel Regeneration. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/923030] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cardiovascular diseases are the leading cause of mortality around the globe. The development of a functional and appropriate substitute for small diameter blood vessel replacement is still a challenge to overcome the main drawbacks of autografts and the inadequate performances of synthetic prostheses made of polyethylene terephthalate (PET, Dacron) and expanded polytetrafluoroethylene (ePTFE, Goretex). Therefore, vascular tissue engineering has become a promising approach for small diameter blood vessel regeneration as demonstrated by the increasing interest dedicated to this field. This review is focused on the most relevant and recent studies concerning vascular tissue engineering for small diameter blood vessel applications. Specifically, the present work reviews research on the development of tissue-engineered vascular grafts made of decellularized matrices and natural and/or biodegradable synthetic polymers and their realization without scaffold.
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Bordenave L, Menu P, Baquey C. Developments towards tissue-engineered, small-diameter arterial substitutes. Expert Rev Med Devices 2014; 5:337-47. [DOI: 10.1586/17434440.5.3.337] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Asakura T, Isozaki M, Saotome T, Tatematsu KI, Sezutsu H, Kuwabara N, Nakazawa Y. Recombinant silk fibroin incorporated cell-adhesive sequences produced by transgenic silkworm as a possible candidate for use in vascular graft. J Mater Chem B 2014; 2:7375-7383. [DOI: 10.1039/c4tb01301h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transgenic silk fibroins that incorporated the laminin sequence were prepared. The adhesive activities tend to increase in the TG silk fibroins relative to WT silk fibroins.
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Affiliation(s)
- Tetsuo Asakura
- Department of Biotechnology
- Tokyo University of Agriculture and Technology
- Koganei, Japan
| | - Makoto Isozaki
- Department of Biotechnology
- Tokyo University of Agriculture and Technology
- Koganei, Japan
| | - Toshiki Saotome
- Department of Biotechnology
- Tokyo University of Agriculture and Technology
- Koganei, Japan
| | - Ken-ichiro Tatematsu
- Transgenic Silkworm Research Unit
- National Institute of Agrobiological Sciences
- Tsukuba, Japan
| | - Hideki Sezutsu
- Transgenic Silkworm Research Unit
- National Institute of Agrobiological Sciences
- Tsukuba, Japan
| | | | - Yasumoto Nakazawa
- Department of Biotechnology
- Tokyo University of Agriculture and Technology
- Koganei, Japan
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46
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Ji Q, Zhang S, Zhang J, Wang Z, Wang J, Cui Y, Pang L, Wang S, Kong D, Zhao Q. Dual Functionalization of Poly(ε-caprolactone) Film Surface through Supramolecular Assembly with the Aim of Promoting In Situ Endothelial Progenitor Cell Attachment on Vascular Grafts. Biomacromolecules 2013; 14:4099-107. [DOI: 10.1021/bm401239a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qing Ji
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
| | - Suai Zhang
- Tianjin
Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Tianjin 300192, People’s Republic of China
| | - Jimin Zhang
- Tianjin
Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Tianjin 300192, People’s Republic of China
| | - Zhihong Wang
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
| | - Jianing Wang
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yun Cui
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
| | - Liyun Pang
- Tianjin
Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Tianjin 300192, People’s Republic of China
| | - Shufang Wang
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
| | - Deling Kong
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
- Tianjin
Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Tianjin 300192, People’s Republic of China
| | - Qiang Zhao
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials (Ministry of Education), College of Life Sciences, Nankai University, Tianjin 300071, People’s Republic of China
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Li Q, Huang C, Xu Z, Liu G, Liu Y, Xiao Z, Nie C, Zheng B, Yang D. The fetal porcine aorta and mesenteric acellular matrix as small-caliber tissue engineering vessels and microvasculature scaffold. Aesthetic Plast Surg 2013; 37:822-32. [PMID: 23817746 DOI: 10.1007/s00266-013-0173-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 05/31/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND The extracellular matrix (ECM) is characterized by not only well-preserved scaffolds of organs and vascularized tissues, but also by extremely low immunogenicity during allo- or xeno-implantation. This study aimed to establish a model of a composite microvasculature network scaffold with a small-caliber-dominant vascular pedicle by decellularizing fetal porcine aorta and the conterminous mesentery. METHODS The aorta and the conterminous mesenteric vascular system originating from the inferior mesenteric artery were harvested from fetal pigs at late gestation. All of the cellular components were removed by sequential treatment with Triton X-100 and sodium dodecyl sulfate. After the degree of decellularization was assessed, the fetal porcine aorta and mesenteric acellular matrix (FPAMAM) were transplanted into dogs. RESULTS Gross and histologic examination demonstrated the removal of cellular constituents with preservation of ECM architecture, including macrochannels and microchannels. The residual DNA content in the FPAMAM was less than 2 %. The aorta and microchannels were perfused well, and the fetal porcine aorta had good patency for more than 3 months. CONCLUSIONS The integrity of the FPAMAM provided a scaffold for the reconstruction of a rich vascular network with numerous segmentally radiating branches. Decellularized fetal porcine vascular tissue might be a potential alternative for xenogeneic transplantation based on its optimized properties and low immunogenicity. LEVEL OF EVIDENCE II This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Qingchun Li
- Division of Plastic Surgery, The 2nd Hospital of Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
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Barkam S, Saraf S, Seal S. Fabricated micro-nano devices for in vivo and in vitro biomedical applications. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2013; 5:544-68. [PMID: 23894041 DOI: 10.1002/wnan.1236] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 06/04/2013] [Accepted: 06/19/2013] [Indexed: 12/11/2022]
Abstract
In recent years, the innovative use of microelectromechanical systems (MEMSs) and nanoelectromechanical systems (NEMSs) in biomedical applications has opened wide opportunities for precise and accurate human diagnostics and therapeutics. The introduction of nanotechnology in biomedical applications has facilitated the exact control and regulation of biological environments. This ability is derived from the small size of the devices and their multifunctional capabilities to operate at specific sites for selected durations of time. Researchers have developed wide varieties of unique and multifunctional MEMS/NEMS devices with micro and nano features for biomedical applications (BioMEMS/NEMS) using the state of the art microfabrication techniques and biocompatible materials. However, the integration of devices with the biological milieu is still a fundamental issue to be addressed. Devices often fail to operate due to loss of functionality, or generate adverse toxic effects inside the body. The in vitro and in vivo performance of implantable BioMEMS such as biosensors, smart stents, drug delivery systems, and actuation systems are researched extensively to understand the interaction of the BioMEMS devices with physiological environments. BioMEMS developed for drug delivery applications include microneedles, microreservoirs, and micropumps to achieve targeted drug delivery. The biocompatibility of BioMEMS is further enhanced through the application of tissue and smart surface engineering. This involves the application of nanotechnology, which includes the modification of surfaces with polymers or the self-assembly of monolayers of molecules. Thereby, the adverse effects of biofouling can be reduced and the performance of devices can be improved in in vivo and in vitro conditions.
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Affiliation(s)
- Swetha Barkam
- Advanced Materials Processing and Analysis Center, Nanoscience Technology Center, Materials Science and Engineering, University of Central Florida, Orlando, FL, USA
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49
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Filová E, Brynda E, Riedel T, Chlupáč J, Vandrovcová M, Svindrych Z, Lisá V, Houska M, Pirk J, Bačáková L. Improved adhesion and differentiation of endothelial cells on surface-attached fibrin structures containing extracellular matrix proteins. J Biomed Mater Res A 2013; 102:698-712. [PMID: 23723042 DOI: 10.1002/jbm.a.34733] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 01/07/2013] [Accepted: 01/09/2013] [Indexed: 02/04/2023]
Abstract
Currently used vascular prostheses are hydrophobic and do not allow endothelial cell (EC) adhesion and growth. The aim of this study was to prepare fibrin (Fb)-based two-dimensional (2D) and three-dimensional (3D) assemblies coated with extracellular matrix (ECM) proteins and to evaluate the EC adhesion, proliferation and differentiation on these assemblies in vitro. Coating of Fb with collagen, laminin (LM), and fibronectin (FN) was proved using the surface plasmon resonance technique. On all Fb assemblies, ECs reached higher cell densities than on polystyrene after 3 and 7 days of culture. Immunoflurescence staining showed better assembly of talin and vinculin into focal adhesion plaques, and also more apparent staining of vascular endothelial cadherin on surface-attached 3D Fb and protein-coated Fb assemblies. On these samples, ECs also contained a lower concentration of intercellular adhesion molecule-1, measured by enzyme-linked immunosorbent assay. Higher concentrations of CD31 (platelet-endothelial cell adhesion molecule-1) were found on 3D Fb coated with LM, and higher concentrations of von Willebrand factor were found on 3D Fb coated with type I collagen or LM in comparison to 2D Fb layers. The results indicate that ECM protein-coated 2D and 3D Fb assemblies can be used for versatile applications in various tissue replacements where endothelialization is desirable, for example, vascular prostheses and heart valves.
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Affiliation(s)
- Elena Filová
- Department of Biomaterials and Tissue Engineering, Institute of Physiology, Academy of Sciences of the Czech Republic, v.v.i., 142 20 Prague 4, Czech Republic
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50
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Cittadella G, de Mel A, Dee R, De Coppi P, Seifalian AM. Arterial Tissue Regeneration for Pediatric Applications: Inspiration From Up-to-Date Tissue-Engineered Vascular Bypass Grafts. Artif Organs 2013; 37:423-34. [DOI: 10.1111/aor.12022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Giorgio Cittadella
- UCL Centre for Nanotechnology & Regenerative Medicine; University College London; London; UK
| | - Achala de Mel
- UCL Centre for Nanotechnology & Regenerative Medicine; University College London; London; UK
| | - Ryan Dee
- UCL Centre for Nanotechnology & Regenerative Medicine; University College London; London; UK
| | - Paolo De Coppi
- Institute of Child Health and Great Ormond Street Hospital; University College London; London; UK
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