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Ozdemir S, Oztemur J, Sezgin H, Yalcin-Enis I. Optimization of Electrospun Bilayer Vascular Grafts through Assessment of the Mechanical Properties of Monolayers. ACS Biomater Sci Eng 2024; 10:960-974. [PMID: 38196384 DOI: 10.1021/acsbiomaterials.3c01161] [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] [Indexed: 01/11/2024]
Abstract
Small-diameter vascular grafts must be obtained with the most appropriate materials and design selection to harmoniously display a variety of features, including adequate tensile strength, compliance, burst strength, biocompatibility, and biodegradability against challenging physiological and hemodynamic conditions. In this study, monolayer vascular grafts with randomly distributed or radially oriented fibers are produced using neat, blended, and copolymer forms of polycaprolactone (PCL) and poly(lactic acid) (PLA) via the electrospinning technique. The blending ratio is varied by increasing 10 in the range of 50-100%. Bilayer graft designs are realized by determining the layers with a random fiber distribution for the inner layer and radial fiber orientation for the outer layer. SEM analysis, wall thickness and fiber diameter measurements, tensile strength, elongation, burst strength, and compliance tests are done for both mono- and bilayer scaffolds. The findings revealed that the scaffolds made of neat PCL show more flexibility than the neat PLA samples, which possess higher tensile strength values than neat PCL scaffolds. Also, in blended samples, the tensile strength values do not show a significant improvement, whereas the elongation values are enhanced in tubular samples, depending on the blending ratio. Also, neat poly(l-lactide-co-caprolactone) (PLCL) samples have both higher elongation and strength values than neat and blended scaffolds, with some exceptions. The blended specimens comprising a combination of PCL and PLA, with blending ratios of 80/20 and 70/30, exhibited the most elevated burst pressures. Conversely, the PLCL scaffolds demonstrated superior compliance levels. These findings suggest that the blending approach and fiber orientation offer enhanced burst strength, while copolymer utilization in PLCL scaffolds without fiber alignment enhances their compliance properties. Thus, it is evident that using a copolymer instead of blending PCL and PLA and combining the PLCL layer with PCL and PLA monolayers in bilayer vascular graft design is promising in terms of mechanical and biological properties.
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Affiliation(s)
- Suzan Ozdemir
- Textile Engineering Department, Istanbul Technical University, Istanbul 34437, Turkey
| | - Janset Oztemur
- Textile Engineering Department, Istanbul Technical University, Istanbul 34437, Turkey
| | - Hande Sezgin
- Textile Engineering Department, Istanbul Technical University, Istanbul 34437, Turkey
| | - Ipek Yalcin-Enis
- Textile Engineering Department, Istanbul Technical University, Istanbul 34437, Turkey
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2
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Oztemur J, Ozdemir S, Tezcan-Unlu H, Cecener G, Sezgin H, Yalcin-Enis I. Investigation of biodegradability and cellular activity of PCL/PLA and PCL/PLLA electrospun webs for tissue engineering applications. Biopolymers 2023; 114:e23564. [PMID: 37614178 DOI: 10.1002/bip.23564] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/10/2023] [Accepted: 07/25/2023] [Indexed: 08/25/2023]
Abstract
Biodegradability and cellular activity are key performance indicators that should be prioritized for tissue engineering applications. Biopolymer selection, determination of necessary structural properties, and their synergistic interactions play an active role in obtaining the expected biodegradability and biological activity from scaffolds. In this study, it is aimed to produce electrospun webs with improved biocompatibility by blending polycaprolactone (PCL) with polylactic acid (PLA) and poly-l-lactide (PLLA), and examine the effect of biopolymer selection and blend ratio on the biodegradability and cellular activity of surfaces. In this context, fibrous webs are produced from PCL/PLA and PCL/PLLA blends with a weight ratio of 80/20 and 50/50 and pure polymers of PCL, PLA, and PLLA by electrospinning method and subjected to morphological and biological analyses. The biodegradation tests are carried out hydrolytically while the cell viability and cell proliferation analyses are performed with adult human primary dermal fibroblasts and human umbilical endothelial cells (HUVECs). The results show that the fiber diameters of the fabricated webs ranged from 0.747 to 1.685 μm. At the end of the 5th month, it is observed that the biodegradation rates of the webs blended 50% with PLA and PLLA, in comparison to PCL ones, increase from 3.7% to 13.33% and 7.69%, respectively. On the other hand, cell culture results highlight that the addition of 20% PLA and PLLA improves the cellular activity of both cell types, but increased PLA or PLLA ratio in PCL webs has a negative effect as it makes the structure stiff and brittle.
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Affiliation(s)
- Janset Oztemur
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Suzan Ozdemir
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Havva Tezcan-Unlu
- Department of Medical Biology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Department of Medical Biology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Hande Sezgin
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Ipek Yalcin-Enis
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
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3
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Mushtaq Alam M, Sugail M, Kannan S. Development, Physiochemical characterization, Mechanical and Finite element analysis of 3D printed Polylactide-β-TCP/α-Al 2O 3 composite. J Mech Behav Biomed Mater 2023; 147:106161. [PMID: 37801964 DOI: 10.1016/j.jmbbm.2023.106161] [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: 07/23/2023] [Revised: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 10/08/2023]
Abstract
Herein, material extrusion (MEX) technique is utilized to develop 3D printed models based on reinforcing β-Ca3(PO4)2/α-Al2O3 composite in polylactide (PLA) matrix. β-Ca3(PO4)2/α-Al2O3 composite has been synthesized through co-precipitation method and the phase content of β-Ca3(PO4)2 and α-Al2O3 components are respectively determined as 64 and 36 wt%. The resultant β-Ca3(PO4)2/α-Al2O3 composite mixed with PLA at various weight ratios were extruded as filaments and subsequently 3D printed into definite shapes for the physiochemical, morphological and mechanical evaluation. 3D printed bodies that comprise 5 wt % β-Ca3(PO4)2/α-Al2O3 composite yielded an increasing tensile, compressive and flexural strength in the corresponding order of ∼15, ∼15 and 22% than 3D printed pure PLA. Further, the Representative volume element (RVE) unit cells developed based on the various investigated compositions of PLA-β-Ca3(PO4)2/α-Al2O3 were subjected to mechanical evaluation through Finite element analysis (FEA) under both static and dynamic loading conditions on ASTM standard specimens. The results from experimental and FEA analysis demonstrated good uniformity that confirmed the reinforcement of 5 wt % β-Ca3(PO4)2/α-Al2O3 in PLA matrix as an optimum combination to yield better mechanical strength.
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Affiliation(s)
- M Mushtaq Alam
- Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605 014, India
| | - Mohamed Sugail
- Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605 014, India
| | - S Kannan
- Centre for Nanoscience and Technology, Pondicherry University, Puducherry, 605 014, India.
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4
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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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5
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Wang J, Wang J, Qiu S, Chen W, Cheng L, Du W, Wang J, Han L, Song L, Hu Y. Biodegradable L-lysine-modified amino black phosphorus/poly(l-lactide-coε-caprolactone) nanofibers with enhancements in hydrophilicity, shape recovery and osteodifferentiation properties. Colloids Surf B Biointerfaces 2021; 209:112209. [PMID: 34814101 DOI: 10.1016/j.colsurfb.2021.112209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/28/2021] [Accepted: 11/06/2021] [Indexed: 12/19/2022]
Abstract
Biodegradable poly-(lactide-coε-caprolactone) (PLCL) scaffolds have opened new perspectives for tissue engineering due to their nontoxic and fascinating functionality. Herein, a black phosphorus-based biodegradable material with a combination of promising enhanced hydrophilicity, shape recovery and osteodifferentiation properties was proposed. First, amino black phosphorous (BP-NH2) was prepared by a simple ball milling method. Then, L-lysine-modified black phosphorous (L-NH-BP) was formed by hydrogen bonding between L-lysine and amino BP and integrated into PLCL to form PLCL/L-NH-BP composite fibers. The scaffolds had excellent shape recovery and shape fixity properties. Moreover, based on gene expression and protein level assessment, the scaffolds could enhance the expression of alkaline phosphatase (ALP) and bone morphogenetic protein 2 (BMP2), simultaneously improving the mineralization ability of bone mesenchymal stem cells. Specifically, this new composite material was experimentally verified to be degradable under mild conditions. This strategy provided new insight into the design of multifunctional materials for diverse applications.
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Affiliation(s)
- Jingwen Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China
| | - Jing Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China; Department of Thyroid and Breast Surgery, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, 230001 Hefei, China
| | - Shuilai Qiu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China.
| | - Weijian Chen
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China
| | - Liang Cheng
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China
| | - Wenxiang Du
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China
| | - Jinghao Wang
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, 230001 Hefei, China
| | - Longfei Han
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China
| | - Lei Song
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 230001 Hefei, China.
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6
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Huyan Y, Chang Y, Song J. Application of Homograft Valved Conduit in Cardiac Surgery. Front Cardiovasc Med 2021; 8:740871. [PMID: 34712711 PMCID: PMC8545902 DOI: 10.3389/fcvm.2021.740871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/20/2021] [Indexed: 11/13/2022] Open
Abstract
Valved conduits often correct the blood flow of congenital heart disease by connecting the right ventricle to the pulmonary artery (RV-PA). The homograft valved conduit was invented in the 1960s, but its wide application is limited due to the lack of effective sterilization and preservation methods. Modern cryopreservation prolongs the preservation time of homograft valved conduit, which makes it become the most important treatment at present, and is widely used in Ross and other operations. However, homograft valved conduit has limited biocompatibility and durability and lacks any additional growth capacity. Therefore, decellularized valved conduit has been proposed as an effective improved method, which can reduce immune response and calcification, and has potential growth ability. In addition, as a possible substitute, commercial xenograft valved conduit has certain advantages in clinical application, and tissue engineering artificial valved conduit needs to be further studied.
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Affiliation(s)
- Yige Huyan
- The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuan Chang
- The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiangping Song
- The Cardiomyopathy Research Group at Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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7
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Patel PR, Pandey K, Killi N, Gundloori RVN. Manipulating hydrophobicity of polyester nanofiber mats with egg albumin to enhance cell interactions. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25776] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pratikshkumar R. Patel
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
| | - Komal Pandey
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
| | - Naresh Killi
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
| | - Rathna Venkata Naga Gundloori
- Polymer Science and Engineering CSIR‐National Chemical Laboratory Pune Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh India
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8
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Proliferation and osteogenic differentiation of mesenchymal stem cells on three-dimensional scaffolds made by thermal sintering method. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01774-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Oztemur J, Yalcin-Enis I. Development of biodegradable webs of PLA/PCL blends prepared via electrospinning: Morphological, chemical, and thermal characterization. J Biomed Mater Res B Appl Biomater 2021; 109:1844-1856. [PMID: 33847451 DOI: 10.1002/jbm.b.34846] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/23/2021] [Accepted: 03/31/2021] [Indexed: 01/02/2023]
Abstract
Biodegradable polymers have a mean role to mimic native tissues and allow cells to penetrate, grow, and proliferate with their advanced features in tissue engineering applications. The physiological, chemical, mechanical, and biological qualities of the surfaces, which are presented from biodegradable polymers, affect the final properties of the scaffolds. In this study, it is aimed to produce fibrous webs by electrospinning method for tissue engineering applications using two different biopolymers, polylactic acid (PLA) and polycaprolactone (PCL). These polymers are used either alone or in a blended form (PLA/PCL, 1/1 wt.). Within the scope of the study, polymer concentrations (6, 8 and 10%) and solvent types (used for chloroform/ethanol/acetic acid mixture, PCL and PLA/PCL mixtures, and chloroform/acetone, PLA) vary as solution parameters. Fibrous webs are investigated in terms of morphological, chemical, and thermal characteristics. Results show continuous fibers are examined for 8 or 10% polymer concentrations with an average fiber diameter of 1.3-2.7 μm and pore area of 4-9 μm2 . No fiber formation is observed in sample groups with a polymer concentration of 6% and beaded structures are formed. Water contact angle analysis proves the hydrophobic properties of PLA and PCL, whereas Fourier-transform infrared results show there is no solution residue on the surfaces, so there is no toxic effect. Also, in differential scanning calorimetry analysis, the characteristic crystallization peaks of the polymers are recognized, and when the polymers are in a blend, it beholds that they have effects on each other's crystallization.
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Affiliation(s)
- Janset Oztemur
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
| | - Ipek Yalcin-Enis
- Textile Engineering Department, Istanbul Technical University, Istanbul, Turkey
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10
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Surface-Modified Highly Biocompatible Bacterial-poly(3-hydroxybutyrate- co-4-hydroxybutyrate): A Review on the Promising Next-Generation Biomaterial. Polymers (Basel) 2020; 13:polym13010051. [PMID: 33375622 PMCID: PMC7795663 DOI: 10.3390/polym13010051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 02/01/2023] Open
Abstract
Polyhydroxyalkanoates (PHAs) are bacteria derived bio-based polymers that are synthesised under limited conditions of nutritional elements with excess carbon sources. Among the members of PHAs, poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [(P(3HB-co-4HB)] emerges as an attractive biomaterial to be applied in medical applications owing to its desirable mechanical and physical properties, non-genotoxicity and biocompatibility eliciting appropriate host tissue responses. The tailorable physical and chemical properties and easy surface functionalisation of P(3HB-co-4HB) increase its practicality to be developed as functional medical substitutes. However, its applicability is sometimes limited due to its hydrophobic nature due to fewer bio-recognition sites. In this review, we demonstrate how surface modifications of PHAs, mainly P(3HB-co-4HB), will overcome these limitations and facilitate their use in diverse medical applications. The integration of nanotechnology has drastically enhanced the functionality of P(3HB-co-4HB) biomaterials for application in complex biological environments of the human body. The design of versatile P(3HB-co-4HB) materials with surface modifications promise a non-cytotoxic and biocompatible material without inducing severe inflammatory responses for enhanced effective alternatives in healthcare biotechnology. The enticing work carried out with P(3HB-co-4HB) promises to be one of the next-generation materials in biomedicines which will facilitate translation into the clinic in the future.
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11
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Zhang X, Wang Z, Zhang YS, Yan S, Hou C, Gong Y, Qiu J, Chen M, Li Q. Studying endothelial cell shedding and orientation using adaptive perfusion-culture in a microfluidic vascular chip. Biotechnol Bioeng 2020; 118:963-978. [PMID: 33200409 DOI: 10.1002/bit.27626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 09/30/2020] [Accepted: 11/05/2020] [Indexed: 11/06/2022]
Abstract
Most tissue-engineered blood vessels are endothelialized by static cultures in vitro. However, it has not been clear whether endothelial cell-shedding and local damage may occur in an endothelial layer formed by static cultures under the effect of blood flow shear postimplantation. In this study, we report a bionic and cost-effective vascular chip platform, and proved that a static culture of endothelialized tissue-engineered blood vessels had the problem of a large number of endothelial cells falling off under the condition imitating the human arterial blood flow, and we addressed this challenge by regulating the flow field in a vascular chip. Electrospun membranes made of highly oriented or randomly distributed poly(ε-caprolactone) fibers were used as the vascular scaffolds, on which endothelial cells proliferated well and eventually formed dense intima layers. We noted that the monolayers gradually adapted to the artery-like microenvironment through the regulation of chip flow field, which also revealed improved cellular orientations. In conclusion, we have proposed a vascular chip with adaptive flow patterns to gradually accommodate the statically cultured vascular endothelia to the shear environment of arterial flow field and enhanced the orientation of the endothelial cells. This strategy may find numerous potential applications such as screening of vascular engineering biomaterials and maturation parameters, studying of vascular biology and pathology, and construction of vessel-on-a-chip models for drug analysis, among others.
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Affiliation(s)
- Xiang Zhang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China.,Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, USA.,National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China.,Key Laboratory for Micro Molding Technology of Henan Province, Zhengzhou University, Zhengzhou, China
| | - Zhenxing Wang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China.,National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China.,Key Laboratory for Micro Molding Technology of Henan Province, Zhengzhou University, Zhengzhou, China
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, USA
| | - Shujie Yan
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China.,National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China.,Key Laboratory for Micro Molding Technology of Henan Province, Zhengzhou University, Zhengzhou, China
| | - Chuanyu Hou
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China.,National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China.,Key Laboratory for Micro Molding Technology of Henan Province, Zhengzhou University, Zhengzhou, China
| | - Youping Gong
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, China
| | - Jingjiang Qiu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China
| | - Mo Chen
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Qian Li
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China.,National Center for International Joint Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou, China.,Key Laboratory for Micro Molding Technology of Henan Province, Zhengzhou University, Zhengzhou, China
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12
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Rashedi S, Afshar S, Rostami A, Ghazalian M, Nazockdast H. Co-electrospun poly(lactic acid)/gelatin nanofibrous scaffold prepared by a new solvent system: morphological, mechanical and in vitro degradability properties. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1740987] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shiva Rashedi
- Department of Polymer Engineering, Amirkabir University of Technology-Mahshahr Campus, Khuzestan, Iran
| | - Shahnoosh Afshar
- Department of Polymer Engineering, Islamic Azad University-Mahshahr Campus, Khuzestan, Iran
| | - Amir Rostami
- Department of Chemical Engineering, Faculty of Petroleum, Gas, and Petrochemical Engineering, Persian Gulf University, Bushehr, Iran
| | - Malihe Ghazalian
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hossein Nazockdast
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran
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13
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Sundar G, Joseph J, C P, John A, Abraham A. Natural collagen bioscaffolds for skin tissue engineering strategies in burns: a critical review. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1740991] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Gayathri Sundar
- Department of Biochemistry, Advanced Center for Tissue Engineering, University of Kerala, Thiruvananthapuram, India
- Department of Biotechnology, CEPCI Laboratory and Research Institute, Kollam, India
| | - Josna Joseph
- Department of Biochemistry, Advanced Center for Tissue Engineering, University of Kerala, Thiruvananthapuram, India
| | - Prabhakumari C
- Department of Biotechnology, CEPCI Laboratory and Research Institute, Kollam, India
| | - Annie John
- Department of Biochemistry, Advanced Center for Tissue Engineering, University of Kerala, Thiruvananthapuram, India
| | - Annie Abraham
- Department of Biochemistry, Advanced Center for Tissue Engineering, University of Kerala, Thiruvananthapuram, India
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14
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Current Challenges and Emergent Technologies for Manufacturing Artificial Right Ventricle to Pulmonary Artery (RV-PA) Cardiac Conduits. Cardiovasc Eng Technol 2019; 10:205-215. [DOI: 10.1007/s13239-019-00406-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 02/05/2019] [Indexed: 01/12/2023]
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15
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Zhao N, Lv Z, Ma J, Zhu C, Li Q. Fabrication of hydrophilic small diameter vascular foam scaffolds of poly(ε-caprolactone)/polylactic blend by sodium hydroxide solution. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Zhang C, Zhai T, Turng LS. Electrospinning of poly(lactic acid)/polycaprolactone blends: investigation of the governing parameters and biocompatibility. JOURNAL OF POLYMER ENGINEERING 2018. [DOI: 10.1515/polyeng-2017-0194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractBlends of poly(lactic acid)/polycaprolactone (PLA/PCL) were electrospun under various conditions to study the influence of solution concentration, feed rate and voltage supply on the morphology of the nanofibers. To improve compatibility and to help produce fine electrospun nanofibers, an L-lactide/caprolactone (LACL) copolymer was introduced as a compatibilizer in the PLA/PCL blends. It was found that the solution concentration was a principal governing factor. The mean diameter of the fibers increased with the solution concentration, feed rate and voltage. Too high of a concentration and feed rate caused the fibers to stick to each other. A slow feed rate, 10% solution concentration, and 20 kV voltage were capable of producing thin, smooth and uniform fibers. Preliminary biocompatibility assays of the nanofibers were conducted with NIH 3T3 cells. The cells grown on the nanofiber blend exhibited spindle-like morphologies. The addition of PCL and LACL copolymer was found to improve the biocompatibility of PLA nanofibers, suggesting their potential application as cell culture scaffolds.
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17
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Awad NK, Niu H, Ali U, Morsi YS, Lin T. Electrospun Fibrous Scaffolds for Small-Diameter Blood Vessels: A Review. MEMBRANES 2018; 8:E15. [PMID: 29509698 PMCID: PMC5872197 DOI: 10.3390/membranes8010015] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 01/31/2018] [Accepted: 02/28/2018] [Indexed: 11/24/2022]
Abstract
Small-diameter blood vessels (SDBVs) are still a challenging task to prepare due to the occurrence of thrombosis formation, intimal hyperplasia, and aneurysmal dilation. Electrospinning technique, as a promising tissue engineering approach, can fabricate polymer fibrous scaffolds that satisfy requirements on the construction of extracellular matrix (ECM) of native blood vessel and promote the adhesion, proliferation, and growth of cells. In this review, we summarize the polymers that are deployed for the fabrication of SDBVs and classify them into three categories, synthetic polymers, natural polymers, and hybrid polymers. Furthermore, the biomechanical properties and the biological activities of the electrospun SBVs including anti-thrombogenic ability and cell response are discussed. Polymer blends seem to be a strategic way to fabricate SDBVs because it combines both suitable biomechanical properties coming from synthetic polymers and favorable sites to cell attachment coming from natural polymers.
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Affiliation(s)
- Nasser K Awad
- Biomechanics and Tissue Engineering Group, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
- Electrochemistry and Corrosion Laboratory, National Research Centre, Dokki, Cairo 12422, Egypt.
| | - Haitao Niu
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
| | - Usman Ali
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
- College of Textile Engineering, Bahauddin Zakariya University, Multan 60800, Pakistan.
| | - Yosry S Morsi
- Biomechanics and Tissue Engineering Group, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | - Tong Lin
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
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Herrero-Herrero M, Gómez-Tejedor J, Vallés-Lluch A. PLA/PCL electrospun membranes of tailored fibres diameter as drug delivery systems. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.12.045] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Antibiotic incorporation in jet-sprayed nanofibrillar biodegradable scaffolds for wound healing. Int J Pharm 2017; 532:802-812. [DOI: 10.1016/j.ijpharm.2017.08.117] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/11/2017] [Accepted: 08/28/2017] [Indexed: 12/12/2022]
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20
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Saini P, Arora M, Kumar MR. Poly(lactic acid) blends in biomedical applications. Adv Drug Deliv Rev 2016; 107:47-59. [PMID: 27374458 DOI: 10.1016/j.addr.2016.06.014] [Citation(s) in RCA: 240] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 05/23/2016] [Accepted: 06/17/2016] [Indexed: 02/07/2023]
Abstract
Poly(lactic acid) (PLA) has become a "material of choice" in biomedical applications for its ability to fulfill complex needs that typically include properties such as biocompatibility, biodegradability, mechanical strength, and processability. Despite the advantages of pure PLA in a wider spectrum of applications, it is limited by its hydrophobicity, low impact toughness, and slow degradation rate. Blending PLA with other polymers offers a convenient option to enhance its properties or generate novel properties for target applications without the need to develop new materials. PLA blends with different natural and synthetic polymers have been developed by solvent and melt blending techniques and further processed based on end-use applications. A variety of PLA blends has been explored for biomedical applications such as drug delivery, implants, sutures, and tissue engineering. This review discusses the opportunities for PLA blends in the biomedical arena, including the overview of blending and postblend processing techniques and the applications of PLA blends currently in use and under development.
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21
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Wang F, Guan X, Wu T, Qiao J, Han Z, Wu J, Yu X, You Q. Acellular Endocardium as a Novel Biomaterial for the Intima of Tissue-Engineered Small-Caliber Vascular Grafts. Artif Organs 2016; 40:E253-E265. [DOI: 10.1111/aor.12814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 05/09/2016] [Accepted: 07/06/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Feng Wang
- Department of Cardiothoracic Surgery; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai
| | - Xin Guan
- Department of Cardiothoracic Surgery; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai
| | - TianYi Wu
- Department of Orthopaedics & Traumatology, Faculty of Medicine; Chinese University of Hong Kong, Prince of Wales Hospital; Hong Kong
| | - JianOu Qiao
- Department of Respiratory Medicine; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - ZhaoQing Han
- Department of Respiratory Medicine; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - JinLong Wu
- Department of Cardiothoracic Surgery; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai
| | - XiaoWei Yu
- Department of Orthopaedic Surgery; Shanghai Jiao Tong University Affiliated Sixth People's Hospital; Shanghai
| | - QingJun You
- Department of Thoracic and Cardiovascular Surgery; Affiliated Hospital of Jiangnan University; Wuxi China
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22
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Song J, Sun B, Liu S, Chen W, Zhang Y, Wang C, Mo X, Che J, Ouyang Y, Yuan W, Fan C. Polymerizing Pyrrole Coated Poly (l-lactic acid-co-ε-caprolactone) (PLCL) Conductive Nanofibrous Conduit Combined with Electric Stimulation for Long-Range Peripheral Nerve Regeneration. Front Mol Neurosci 2016; 9:117. [PMID: 27877111 PMCID: PMC5100554 DOI: 10.3389/fnmol.2016.00117] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 10/21/2016] [Indexed: 12/02/2022] Open
Abstract
Electrospinning and electric stimulation (ES) are both promising methods to support neuron adhesion and guide extension of neurons for nerve regeneration. Concurrently, all studies focus on either electrospinning for conduits material or ES in vitro study to accelerate nerve regeneration; few work on the combined use of these two strategies or ES in vivo study. Therefore, this study aimed to investigate the abilities of direct current ES through electrospinning conductive polymer composites composed of polypyrrole and Poly (l-lactic acid-co-ε-caprolactone) (PPY/PLCL) in peripheral nerve regeneration. PPY/PLCL composite conduits were synthesized by polymerizing pyrrole coated electrospun PLCL scaffolds. Morphologies and chemical compositions were characterized by scanning electron microscope and attenuated total reflection fourier transform infrared (ATR-FTIR) microscope. Rat pheochromocytoma 12 (PC12) cells and dorsal root ganglia (DRG) cells cultured on PPY/PLCL scaffolds were stimulated with 100 mV/cm for 4 h per day. The median neurite length and cell viability were measured in PC-12 cells. The levels of brain-derived neurotrophic factor (BDNF), glial cell derived neurotrophic factor (GDNF) and neurotrophin-3 (NT-3) were analyzed in DRG cells. In rats, 15 mm gaps of sciatic nerves were bridged using an autograft, non-stimulated PPY/PLCL conduit and PPY/PLCL conduit stimulated with 100 mV potential, respectively. A 100 mV potential direct current ES was applied for 1 h per day at 1, 3, 5 and 7 days post-implantation. The PPY/PLCL conduits with ES showed a similar performance compared with the autograft group, and significantly better than the non-stimulated PPY/PLCL conduit group. These promising results show that the PPY/PLCL conductive conduits’ combined use with ES has great potential for peripheral nerve regeneration.
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Affiliation(s)
- Jialin Song
- Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai, China; Shanghai Sixth People's Hospital East Campus, Shanghai University of Medicine and HealthShanghai, China
| | - Binbin Sun
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University Shanghai, China
| | - Shen Liu
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai, China
| | - Wei Chen
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai, China
| | - Yuanzheng Zhang
- Changhai Hospital of Second Military Medical University Shanghai, China
| | - Chunyang Wang
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai, China
| | - Xiumei Mo
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University Shanghai, China
| | - Junyi Che
- School of Pharmacy, Shanghai Jiao Tong University Shanghai, China
| | - Yuanming Ouyang
- Shanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai, China; Shanghai Sixth People's Hospital East Campus, Shanghai University of Medicine and HealthShanghai, China
| | - Weien Yuan
- School of Pharmacy, Shanghai Jiao Tong University Shanghai, China
| | - Cunyi Fan
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai, China
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Lakshmanan R, Kumaraswamy P, Krishnan UM, Sethuraman S. Engineering a growth factor embedded nanofiber matrix niche to promote vascularization for functional cardiac regeneration. Biomaterials 2016; 97:176-95. [DOI: 10.1016/j.biomaterials.2016.02.033] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/17/2016] [Accepted: 02/22/2016] [Indexed: 12/20/2022]
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24
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Mubyana K, Koppes RA, Lee KL, Cooper JA, Corr DT. The influence of specimen thickness and alignment on the material and failure properties of electrospun polycaprolactone nanofiber mats. J Biomed Mater Res A 2016; 104:2794-800. [PMID: 27355844 DOI: 10.1002/jbm.a.35821] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/17/2016] [Accepted: 06/22/2016] [Indexed: 12/24/2022]
Abstract
Electrospinning is a versatile fabrication technique that has been recently expanded to create nanofibrous structures that mimic ECM topography. Like many materials, electrospun constructs are typically characterized on a smaller scale, and scaled up for various applications. This established practice is based on the assumption that material properties, such as toughness, failure stress and strain, are intrinsic to the material, and thus will not be influenced by specimen geometry. However, we hypothesized that the material and failure properties of electrospun nanofiber mats vary with specimen thickness. To test this, we mechanically characterized polycaprolactone (PCL) nanofiber mats of three different thicknesses in response to constant rate elongation to failure. To identify if any observed thickness-dependence could be attributed to fiber alignment, such as the effects of fiber reorientation during elongation, these tests were performed in mats with either random or aligned nanofiber orientation. Contrary to our hypothesis, the failure strain was conserved across the different thicknesses, indicating similar maximal elongation for specimens of different thickness. However, in both the aligned and randomly oriented groups, the ultimate tensile stress, short-range modulus, yield modulus, and toughness all decreased with increasing mat thickness, thereby indicating that these are not intrinsic material properties. These findings have important implications in engineered scaffolds for fibrous and soft tissue applications (e.g., tendon, ligament, muscle, and skin), where such oversights could result in unwanted laxity or reduced resistance to failure. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2794-2800, 2016.
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Affiliation(s)
- Kuwabo Mubyana
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York, 12180
| | - Ryan A Koppes
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York, 12180
| | - Kristen L Lee
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York, 12180
| | - James A Cooper
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York, 12180.,Musculoskeletal and Translational Tissue Engineering Research Lab©, P.O. Box 153, 7715 Crittenden Street, Philadelphia, Pennsylvania 19118
| | - David T Corr
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York, 12180.
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25
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Shen H, Hu X, Cui H, Zhuang Y, Huang D, Yang F, Wang X, Wang S, Wu D. Fabrication and effect on regulating vSMC phenotype of a biomimetic tunica media scaffold. J Mater Chem B 2016; 4:7689-7696. [DOI: 10.1039/c6tb02437h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We constructed a bFGF@TGF-β1 loaded porous film-like PLGA scaffold with dual surface topography of nanofiber and micro-orientation structures for regulating the phenotype of vascular smooth muscle cell (vSMC).
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Affiliation(s)
- Hong Shen
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xixue Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Haiyan Cui
- Ninth People's Hospital
- School of Medicine
- Shanghai Jiao Tong University
- Shanghai 200011
- China
| | - Yaping Zhuang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Da Huang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Shenguo Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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26
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Lakshmanan R, Krishnan UM, Sethuraman S. Multidimensional nanofibrous scaffolds of poly(lactide-co-caprolactone) and poly(ethyl oxazoline) with improved features for cardiac tissue engineering. Nanomedicine (Lond) 2015; 10:3451-67. [DOI: 10.2217/nnm.15.143] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Aim: The aim of the study is to develop scaffolds that mimic native tissue properties for effective regeneration of the myocardium, which is affected by the gradual thinning of left ventricular tissue after an infarction. Materials & methods: Heterogenous nanofibrous scaffolds made of poly(lactide-co-caprolactone) and poly(ethyl oxazoline) were characterized for physico-chemical properties. The biocompatibility of the scaffolds was evaluated by studying the adhesion, proliferation and differentiation of H9c2 cells. Results: The scaffolds mimic the cardiac extracellular matrix and showed enhanced tensile strength, improved cell compatibility along with the expression of cardiac marker proteins. Conclusion: Our experimental data confirmed the importance of native tissue architecture and mechanical strength for improved cell response in cardiac tissue engineering.
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Affiliation(s)
- Rajesh Lakshmanan
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur – 613 401, India
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur – 613 401, India
| | - Swaminathan Sethuraman
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur – 613 401, India
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27
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Sankaran KK, Subramanian A, Krishnan UM, Sethuraman S. Nanoarchitecture of scaffolds and endothelial cells in engineering small diameter vascular grafts. Biotechnol J 2015; 10:96-108. [DOI: 10.1002/biot.201400415] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 10/27/2014] [Accepted: 12/03/2014] [Indexed: 12/14/2022]
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