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Rezvova MA, Ovcharenko EA, Klyshnikov KY, Glushkova TV, Kostyunin AE, Shishkova DK, Matveeva VG, Velikanova EA, Shabaev AR, Kudryavtseva YA. Electrospun bioresorbable polymer membranes for coronary artery stents. Front Bioeng Biotechnol 2024; 12:1440181. [PMID: 39234270 PMCID: PMC11371781 DOI: 10.3389/fbioe.2024.1440181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 08/09/2024] [Indexed: 09/06/2024] Open
Abstract
Percutaneous coronary intervention, a common treatment for atherosclerotic coronary artery lesions, occasionally results in perforations associated with increased mortality rates. Stents coated with a bioresorbable polymer membrane may offer an effective solution for sealing coronary artery perforations. Additionally, such coatings could be effective in mitigating neointimal hyperplasia within the vascular lumen and correcting symptomatic aneurysms. This study examines polymer membranes fabricated by electrospinning of polycaprolactone, polydioxanone, polylactide-co-caprolactone, and polylactide-co-glycolide. In uniaxial tensile tests, all the materials appear to surpass theoretically derived elongation thresholds necessary for stent deployment, albeit polydioxanone membranes are found to disintegrate during the experimental balloon expansion. As revealed by in vitro hemocompatibility testing, polylactide-co-caprolactone membranes exhibit higher thrombogenicity compared to other evaluated polymers, while polylactide-co-glycolide samples fail within the first day post-implantation into the abdominal aorta in rats. The PCL membrane exhibited significant water leakage in the permeability test. Comprehensive evaluation of mechanical testing, bio- and hemocompatibility, as well as biodegradation dynamics shows the advantage of membranes based on and the mixture of polylactide-co-caprolactone and polydioxanone over other polymer groups. These findings lay a foundational framework for conducting preclinical studies on stent configurations in large laboratory animals, emphasizing that further investigations under conditions closely mimicking clinical use are imperative for making definitive conclusions.
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Affiliation(s)
- Maria A Rezvova
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Evgeny A Ovcharenko
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Kirill Yu Klyshnikov
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Tatiana V Glushkova
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | | | - Daria K Shishkova
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Vera G Matveeva
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Elena A Velikanova
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Amin R Shabaev
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Yulia A Kudryavtseva
- Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
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2
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Meng C, Liu X, Li R, Malekmohammadi S, Feng Y, Song J, Gong RH, Li J. 3D Poly (L-lactic acid) fibrous sponge with interconnected porous structure for bone tissue scaffold. Int J Biol Macromol 2024; 268:131688. [PMID: 38642688 DOI: 10.1016/j.ijbiomac.2024.131688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/08/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
Large bone defects, often resulting from trauma and disease, present significant clinical challenges. Electrospun fibrous scaffolds closely resembling the morphology and structure of natural ECM are highly interested in bone tissue engineering. However, the traditional electrospun fibrous scaffold has some limitations, including lacking interconnected macropores and behaving as a 2D scaffold. To address these challenges, a sponge-like electrospun poly(L-lactic acid) (PLLA)/polycaprolactone (PCL) fibrous scaffold has been developed by an innovative and convenient method (i.e., electrospinning, homogenization, progen leaching and shaping). The resulting scaffold exhibited a highly porous structure (overall porosity = 85.9 %) with interconnected, regular macropores, mimicking the natural extracellular matrix. Moreover, the incorporation of bioactive glass (BG) particles improved the hydrophilicity (water contact angle = 79.7°) and biocompatibility and promoted osteoblast cell growth. In-vitro 10-day experiment revealed that the scaffolds led to high cell viability. The increment of the proliferation rates was 195.4 % at day 7 and 281.6 % at day 10. More importantly, Saos-2 cells could grow, proliferate, and infiltrate into the scaffold. Therefore, this 3D PLLA/PCL with BG sponge holds great promise for bone defect repair in tissue engineering applications.
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Affiliation(s)
- Chen Meng
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Xuzhao Liu
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK; Photon Science Institute, The University of Manchester, Manchester M13 9PL, UK
| | - Renzhi Li
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | | | - Yangyang Feng
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Jun Song
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - R Hugh Gong
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK
| | - Jiashen Li
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK.
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Pishnamazi SM, Ghaderian SMH, Irani S, Ardeshirylajimi A. Polycaprolactone/poly L-lactic acid nanofibrous scaffold improves osteogenic differentiation of the amniotic fluid-derived stem cells. In Vitro Cell Dev Biol Anim 2024; 60:106-114. [PMID: 38123755 DOI: 10.1007/s11626-023-00838-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 11/21/2023] [Indexed: 12/23/2023]
Abstract
Using stem cells is one of the most important determining factors in repairing lesions using regenerative medicine. Obtaining adult stem cells from patients is a perfect choice, but it is worth noting that their differentiation and proliferation potential decreases as the patient ages. For this reason, the use of amniotic fluid stem cells can be one of the excellent alternatives. This research aimed to investigate the osteogenic differentiation potential of the amniotic fluid stem cells while cultured on the polycaprolactone/poly L-lactic acid nanofibrous scaffold. Scaffolds were qualitatively evaluated by a scanning electron microscope, and their hydrophilicity and mechanical properties were studied using contact angle and tensile test, respectively. The biocompatibility and non-toxicity of the nanofibers were also evaluated using viability assay. The osteo-supportive capacity of the nanofibers was examined using alizarin red staining, alkaline phosphatase activity, and calcium release measurement. Finally, the expression level of four important bone-related genes was determined quantitatively. The results demonstrated that the mineralization rate, alkaline phosphatase activity, intracellular calcium, and bone-related genes increased significantly in the cells cultured on the polycaprolactone/poly L-lactic acid scaffold compared to the cells cultured on the tissue culture plate as a control. According to the results, it can be concluded that the polycaprolactone/poly L-lactic acid nanofibrous scaffold surprisingly improved the osteogenic differentiation potential of the amniotic fluid stem cells and, in combination with polycaprolactone/poly L-lactic acid nanofibers could be a promising candidate as bone implants.
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Affiliation(s)
| | | | - Shiva Irani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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4
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Heterogeneous porous PLLA/PCL fibrous scaffold for bone tissue regeneration. Int J Biol Macromol 2023; 235:123781. [PMID: 36849071 DOI: 10.1016/j.ijbiomac.2023.123781] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/27/2023]
Abstract
Bone tissue engineering has become one of the most promising therapeutic methods to treat bone defects. A suitable scaffolding material to regenerate new bone tissues should have a high specific surface area, high porosity and a suitable surface structure which benefit cell attachment, proliferation, and differentiation. In this study, an acetone post-treatment strategy was developed to generate heterogeneous structure. After PLLA/PCL nanofibrous membranes were electrospun and collected, they were treated with acetone to generate a highly porous structure. Meanwhile, part of PCL was extracted from the fibre and enriched on the fibre surface. The cell affinity of the nanofibrous membrane was verified by human osteoblast-like cells assay. The proliferation rate of heterogeneous samples increased 190.4 %, 265.5 % and 137.9 % at day 10 compared with pristine samples. These results demonstrated that the heterogeneous PLLA/PCL nanofibrous membranes could enhance osteoblast adhesion and proliferation. With high surface area (average surface area 36.302 m2/g) and good mechanical properties (average Young's modulus 1.65 GPa and average tensile strength 5.1 MPa), the heterogeneous PLLA/PCL membrane should have potential applications in the field of bone regeneration.
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5
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Can‐Herrera LA, Oliva AI, Cervantes‐Uc JM. Enhancement of chemical, physical, and surface properties of electrospun
PCL
/
PLA
blends by means of air plasma treatment. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Andrés Iván Oliva
- Departamento de Física Aplicada CINVESTAV‐IPN, Unidad Mérida Mérida Yucatán Mexico
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6
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Combined chemical and structural signals of biomaterials synergistically activate cell-cell communications for improving tissue regeneration. Acta Biomater 2017; 55:249-261. [PMID: 28377306 DOI: 10.1016/j.actbio.2017.03.056] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/24/2017] [Accepted: 03/31/2017] [Indexed: 01/20/2023]
Abstract
Biomaterials are only used as carriers of cells in the conventional tissue engineering. Considering the multi-cell environment and active cell-biomaterial interactions in tissue regeneration process, in this study, structural signals of aligned electrospun nanofibers and chemical signals of bioglass (BG) ionic products in cell culture medium are simultaneously applied to activate fibroblast-endothelial co-cultured cells in order to obtain an improved skin tissue engineering construct. Results demonstrate that the combined biomaterial signals synergistically activate fibroblast-endothelial co-culture skin tissue engineering constructs through promotion of paracrine effects and stimulation of gap junctional communication between cells, which results in enhanced vascularization and extracellular matrix protein synthesis in the constructs. Structural signals of aligned electrospun nanofibers play an important role in stimulating both of paracrine and gap junctional communication while chemical signals of BG ionic products mainly enhance paracrine effects. In vivo experiments reveal that the activated skin tissue engineering constructs significantly enhance wound healing as compared to control. This study indicates the advantages of synergistic effects between different bioactive signals of biomaterials can be taken to activate communication between different types of cells for obtaining tissue engineering constructs with improved functions. STATEMENT OF SIGNIFICANCE Tissue engineering can regenerate or replace tissue or organs through combining cells, biomaterials and growth factors. Normally, for repairing a specific tissue, only one type of cells, one kind of biomaterials, and specific growth factors are used to support cell growth. In this study, we proposed a novel tissue engineering approach by simply using co-cultured cells and combined biomaterial signals. Using a skin tissue engineering model, we successfully proved that the combined biomaterial signals such as surface nanostructures and bioactive ions could synergistically stimulate the cell-cell communication in co-culture system through paracrine effects and gap junction activation, and regulated expression of growth factors and extracellular matrix proteins, resulting in an activated tissue engineering constructs that significantly enhanced skin regeneration.
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Kalaithong W, Molloy R, Theerathanagorn T, Janvikul W. Novel poly(l-lactide-co-caprolactone)/gelatin porous scaffolds for use in articular cartilage tissue engineering: Comparison of electrospinning and wet spinning processing methods. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24464] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Wichaya Kalaithong
- Biomedical Polymers Technology Unit, Department of Chemistry, Faculty of Science; Chiang Mai University; Chiang Mai Thailand 50200
| | - Robert Molloy
- Biomedical Polymers Technology Unit, Department of Chemistry, Faculty of Science; Chiang Mai University; Chiang Mai Thailand 50200
- Materials Science Research Center, Faculty of Science; Chiang Mai University; Chiang Mai Thailand 50200
| | - Tharinee Theerathanagorn
- National Metal and Materials Technology Center, National Science and Technology Development Agency; Thailand Science Park Pathum Thani Thailand 12120
| | - Wanida Janvikul
- National Metal and Materials Technology Center, National Science and Technology Development Agency; Thailand Science Park Pathum Thani Thailand 12120
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Yang X, Li Z. Influence of hydroxyapatite and BMP-2 on bioactivity and bone tissue formation ability of electrospun PLLA nanofibers. J Appl Polym Sci 2015. [DOI: 10.1002/app.42249] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaozhan Yang
- School of Optoelectronic Information, Chongqing University of Technology; Chongqing 400054 China
| | - Zhensheng Li
- College of Biomedical Engineering, Third Military Medical University; Chongqing 400038 China
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Chen L, Bai Y, Liao G, Peng E, Wu B, Wang Y, Zeng X, Xie X. Electrospun poly(L-lactide)/poly(ε-caprolactone) blend nanofibrous scaffold: characterization and biocompatibility with human adipose-derived stem cells. PLoS One 2013; 8:e71265. [PMID: 23990941 PMCID: PMC3753307 DOI: 10.1371/journal.pone.0071265] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 06/27/2013] [Indexed: 12/04/2022] Open
Abstract
The essence of tissue engineering is the fabrication of autologous cells or induced stem cells in naturally derived or synthetic scaffolds to form specific tissues. Polymer is thought as an appealing source of cell-seeded scaffold owing to the diversity of its physicochemical property and can be electrospun into nano-size to mimic natural structure. Poly (L-lactic acid) (PLLA) and poly (ε-caprolactone) (PCL) are both excellent aliphatic polyester with almost “opposite” characteristics. The controlling combination of PLLA and PCL provides varying properties and makes diverse applications. Compared with the copolymers of the same components, PLLA/PCL blend demonstrates its potential in regenerative medicine as a simple, efficient and scalable alternative. In this study, we electrospun PLLA/PCL blends of different weight ratios into nanofibrous scaffolds (NFS) and their properties were detected including morphology, porosity, degradation, ATR-FTIR analysis, stress-stain assay, and inflammatory reaction. To explore the biocompatibility of the NFS we synthesized, human adipose-derived stem cells (hASCs) were used to evaluate proliferation, attachment, viability and multi-lineage differentiation. In conclusion, the electrospun PLLA/PCL blend nanofibrous scaffold with the indicated weight ratios all supported hASCs well. However, the NFS of 1/1 weight ratio showed better properties and cellular responses in all assessments, implying it a biocompatible scaffold for tissue engineering.
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Affiliation(s)
- Liang Chen
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yi Bai
- Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Guiying Liao
- School of Material Science and Chemistry Engineering, China University of Geosciences (Wuhan), Wuhan, Hubei, China
| | - Ejun Peng
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Bolin Wu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yuxi Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaoyong Zeng
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- * E-mail:
| | - Xiaolin Xie
- Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Selcan Gungor-Ozkerim P, Balkan T, Kose GT, Sezai Sarac A, Kok FN. Incorporation of growth factor loaded microspheres into polymeric electrospun nanofibers for tissue engineering applications. J Biomed Mater Res A 2013; 102:1897-908. [DOI: 10.1002/jbm.a.34857] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 05/31/2013] [Accepted: 06/25/2013] [Indexed: 11/09/2022]
Affiliation(s)
- P. Selcan Gungor-Ozkerim
- Molecular Biology-Genetics and Biotechnology Program; Istanbul Technical University; MOBGAM Istanbul 34469 Turkey
| | - Timucin Balkan
- Istanbul Technical University; Department of Chemistry & Polymer Science and Technology; Istanbul 34469 Turkey
| | - Gamze T. Kose
- Yeditepe University; Department of Genetics and Bioengineering; Istanbul 34755 Turkey
- BIOMATEN Center of Excellence in Biomaterials and Tissue Engineering; Middle East Technical University; Ankara Turkey
| | - A. Sezai Sarac
- Istanbul Technical University; Department of Chemistry & Polymer Science and Technology; Istanbul 34469 Turkey
| | - Fatma N. Kok
- Molecular Biology-Genetics and Biotechnology Program; Istanbul Technical University; MOBGAM Istanbul 34469 Turkey
- BIOMATEN Center of Excellence in Biomaterials and Tissue Engineering; Middle East Technical University; Ankara Turkey
- Istanbul Technical University; Molecular Biology and Genetics Department; Istanbul 34469 Turkey
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11
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Thapsukhon B, Thadavirul N, Supaphol P, Meepowpan P, Molloy R, Punyodom W. Effects of copolymer microstructure on the properties of electrospun poly(l-lactide-co-ε-caprolactone) absorbable nerve guide tubes. J Appl Polym Sci 2013. [DOI: 10.1002/app.39675] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Napaphat Thadavirul
- The Petroleum and Petrochemical College; Chulalongkorn University; Soi Chulalongkorn 12, Pathumwan; Bangkok; 10330; Thailand
| | - Pitt Supaphol
- The Petroleum and Petrochemical College; Chulalongkorn University; Soi Chulalongkorn 12, Pathumwan; Bangkok; 10330; Thailand
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12
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Panneerselvan A, Nguyen LTH, Su Y, Teo WE, Liao S, Ramakrishna S, Chan CW. Cell viability and angiogenic potential of a bioartificial adipose substitute. J Tissue Eng Regen Med 2012; 9:702-13. [PMID: 23166045 DOI: 10.1002/term.1633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 06/29/2012] [Accepted: 09/16/2012] [Indexed: 11/08/2022]
Abstract
An implantable scaffold pre-seeded with cells needs to remain viable and encourage rapid angiogenesis in order to replace injured tissues, especially for tissue defect repairs. We created a bioartificial adipose graft composed of an electrospun 3D nanofibrous scaffold and fat tissue excised from New Zealand white rabbits. Cell viability and angiogenesis potential of the bioartificial substitute were examined during four weeks of culture in Dulbecco's Modified Eagle Medium by immunohistochemical staining with LIVE/DEAD® cell kit and PECAM-1 antibody, respectively. In addition, a Matrigel® assay was performed to examine the possibility of blood vessels sprouting from the bioartificial graft. Our results showed that cells within the graft were viable and vascular tubes were present at week 4, while cells in a fat tissue block were dead in vitro. In addition, capillaries were observed sprouting from the graft into the Matrigel, demonstrating its angiogenic potential. We expect that improved cell viability and angiogenesis in the bioartificial substitute, compared to intact autologous graft, could potentially contribute to its survival following implantation.
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Affiliation(s)
| | - Luong T H Nguyen
- NUS Graduate School for Integrative Sciences and Engineering (NGS), National University of Singapore, Singapore
| | - Yan Su
- College of Chemistry & Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | | | - Susan Liao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore.,King Saud University, Riyadh, 11451, Kingdom of Saudi Arabia
| | - Ching Wan Chan
- Department of General Surgery, National University Healthcare System, Singapore
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13
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Liao GY, Jiang S, Xia H, Jiang K. Preparation and Characterization of Aligned PLLA/PCL/HA Composite Fibrous Membranes. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.722855] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Liao GY, Peng XI, Jiang S. Electrospun Aligned Poly(L-lactide)/Poly(ϵ-caprolactone) /Poly(ethylene glycol) Blend Fibrous Membranes. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.676884] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Xu H, Cui W, Chang J. Fabrication of patterned PDLLA/PCL composite scaffold by electrospinning. J Appl Polym Sci 2012. [DOI: 10.1002/app.37505] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Demirbag B, Huri PY, Kose GT, Buyuksungur A, Hasirci V. Advanced cell therapies with and without scaffolds. Biotechnol J 2012; 6:1437-53. [PMID: 22162495 DOI: 10.1002/biot.201100261] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Tissue engineering and regenerative medicine aim to produce tissue substitutes to restore lost functions of tissues and organs. This includes cell therapies, induction of tissue/organ regeneration by biologically active molecules, or transplantation of in vitro grown tissues. This review article discusses advanced cell therapies that make use of scaffolds and scaffold-free approaches. The first part of this article covers the basic characteristics of scaffolds, including characteristics of scaffold material, fabrication and surface functionalization, and their applications in the construction of hard (bone and cartilage) and soft (nerve, skin, blood vessel, heart muscle) tissue substitutes. In addition, cell sources as well as bioreactive agents, such as growth factors, that guide cell functions are presented. The second part in turn, examines scaffold-free applications, with a focus on the recently discovered cell sheet engineering. This article serves as a good reference for all applications of advanced cell therapies and as well as advantages and limitations of scaffold-based and scaffold-free strategies.
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Affiliation(s)
- Birsen Demirbag
- METU, Department of Biotechnology, Biotechnology Research Unit, Ankara, Turkey
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17
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Zhang N, Kohn DH. Using polymeric materials to control stem cell behavior for tissue regeneration. BIRTH DEFECTS RESEARCH. PART C, EMBRYO TODAY : REVIEWS 2012; 96:63-81. [PMID: 22457178 PMCID: PMC5538808 DOI: 10.1002/bdrc.21003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Patients with organ failure often suffer from increased morbidity and decreased quality of life. Current strategies of treating organ failure have limitations, including shortage of donor organs, low efficiency of grafts, and immunological problems. Tissue engineering emerged about two decades ago as a strategy to restore organ function with a living, functional engineered substitute. However, the ability to engineer a functional organ is limited by a limited understanding of the interactions between materials and cells that are required to yield functional tissue equivalents. Polymeric materials are one of the most promising classes of materials for use in tissue engineering, due to their biodegradability, flexibility in processing and property design, and the potential to use polymer properties to control cell function. Stem cells offer potential in tissue engineering because of their unique capacity to self-renew and differentiate into neurogenic, osteogenic, chondrogenic, and myogenic lineages under appropriate stimuli from extracellular components. This review examines recent advances in stem cell-polymer interactions for tissue regeneration, specifically highlighting control of polymer properties to direct adhesion, proliferation, and differentiation of stem cells, and how biomaterials can be designed to provide some of the stimuli to cells that the natural extracellular matrix does.
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Affiliation(s)
- Nianli Zhang
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, Michigan 48109-1078, USA
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18
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Amirian M, Nabipour Chakoli A, Cai W, Sui JH. In vitro degradation of poly(l-lactide)/poly(ε-caprolactone) blend reinforced with MWCNTs. IRANIAN POLYMER JOURNAL 2012. [DOI: 10.1007/s13726-012-0014-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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