1
|
Afzal A, Jalalah M, Noor A, Khaliq Z, Qadir MB, Masood R, Nazir A, Ahmad S, Ahmad F, Irfan M, Afzal M, Faisal M, Alsareii SA, Harraz FA. Development and Characterization of Drug Loaded PVA/PCL Fibres for Wound Dressing Applications. Polymers (Basel) 2023; 15:polym15061355. [PMID: 36987136 PMCID: PMC10057071 DOI: 10.3390/polym15061355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/27/2023] [Accepted: 03/03/2023] [Indexed: 03/11/2023] Open
Abstract
Nowadays, synthetic polymers are used in medical applications due to their special biodegradable, biocompatible, hydrophilic, and non-toxic properties. The materials, which can be used for wound dressing fabrication with controlled drug release profile, are the need of the time. The main aim of this study was to develop and characterize polyvinyl alcohol/polycaprolactone (PVA/PCL) fibres containing a model drug. A dope solution comprising PVA/PCL with the drug was extruded into a coagulation bath and became solidified. The developed PVA/PCL fibres were then rinsed and dried. These fibres were tested for Fourier transform infrared spectroscopy, linear density, topographic analysis, tensile properties, liquid absorption, swelling behaviour, degradation, antimicrobial activity, and drug release profile for improved and better healing of the wound. From the results, it was concluded that PVA/PCL fibres containing a model drug can be produced by using the wet spinning technique and have respectable tensile properties; adequate liquid absorption, swelling %, and degradation %; and good antimicrobial activity with the controlled drug release profile of the model drug for wound dressing applications.
Collapse
Affiliation(s)
- Ali Afzal
- Department of Textile Engineering, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
- Correspondence: (A.A.); (M.B.Q.); (F.A.H.)
| | - Mohammed Jalalah
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Electrical Engineering, College of Engineering, Najran University, Najran 11001, Saudi Arabia
| | - Abid Noor
- Department of Textile Technology, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Zubair Khaliq
- Department of Materials, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Muhammad Bilal Qadir
- Department of Textile Engineering, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
- Correspondence: (A.A.); (M.B.Q.); (F.A.H.)
| | - Rashid Masood
- Department of Textile Technology, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Ahsan Nazir
- Department of Textile Engineering, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Sheraz Ahmad
- Department of Textile Technology, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Faheem Ahmad
- Department of Textile Technology, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Muhammad Irfan
- Department of Textile Engineering, School of Engineering & Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Munazza Afzal
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Mohd Faisal
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
| | - Saeed A. Alsareii
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Surgery, College of Medicine, Najran University, Najran 11001, Saudi Arabia
| | - Farid A. Harraz
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Sharurah 68342, Saudi Arabia
- Correspondence: (A.A.); (M.B.Q.); (F.A.H.)
| |
Collapse
|
2
|
Shikhani A, Karam S, Said M, Atassi Y, Sarhan H. Preparation of biodegradable and biocompatible chitosan-grafted polylactic acid hydrogel as a hemostatic system. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03258-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
3
|
Marquez-Bravo S, Doench I, Molina P, Bentley FE, Tamo AK, Passieux R, Lossada F, David L, Osorio-Madrazo A. Functional Bionanocomposite Fibers of Chitosan Filled with Cellulose Nanofibers Obtained by Gel Spinning. Polymers (Basel) 2021; 13:polym13101563. [PMID: 34068136 PMCID: PMC8152965 DOI: 10.3390/polym13101563] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/20/2022] Open
Abstract
Extremely high mechanical performance spun bionanocomposite fibers of chitosan (CHI), and cellulose nanofibers (CNFs) were successfully achieved by gel spinning of CHI aqueous viscous formulations filled with CNFs. The microstructural characterization of the fibers by X-ray diffraction revealed the crystallization of the CHI polymer chains into anhydrous chitosan allomorph. The spinning process combining acidic-basic-neutralization-stretching-drying steps allowed obtaining CHI/CNF composite fibers of high crystallinity, with enhanced effect at incorporating the CNFs. Chitosan crystallization seems to be promoted by the presence of cellulose nanofibers, serving as nucleation sites for the growing of CHI crystals. Moreover, the preferential orientation of both CNFs and CHI crystals along the spun fiber direction was revealed in the two-dimensional X-ray diffraction patterns. By increasing the CNF amount up to the optimum concentration of 0.4 wt % in the viscous CHI/CNF collodion, Young's modulus of the spun fibers significantly increased up to 8 GPa. Similarly, the stress at break and the yield stress drastically increased from 115 to 163 MPa, and from 67 to 119 MPa, respectively, by adding only 0.4 wt % of CNFs into a collodion solution containing 4 wt % of chitosan. The toughness of the CHI-based fibers thereby increased from 5 to 9 MJ.m-3. For higher CNFs contents like 0.5 wt %, the high mechanical performance of the CHI/CNF composite fibers was still observed, but with a slight worsening of the mechanical parameters, which may be related to a minor disruption of the CHI matrix hydrogel network constituting the collodion and gel fiber, as precursor state for the dry fiber formation. Finally, the rheological behavior observed for the different CHI/CNF viscous collodions and the obtained structural, thermal and mechanical properties results revealed an optimum matrix/filler compatibility and interface when adding 0.4 wt % of nanofibrillated cellulose (CNF) into 4 wt % CHI formulations, yielding functional bionanocomposite fibers of outstanding mechanical properties.
Collapse
Affiliation(s)
- Sofia Marquez-Bravo
- Institute of Microsystems Engineering IMTEK, University of Freiburg, 79110 Freiburg, Germany; (S.M.-B.); (I.D.); (P.M.); (F.E.B.); (A.K.T.)
- Freiburg Materials Research Center FMF, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany
| | - Ingo Doench
- Institute of Microsystems Engineering IMTEK, University of Freiburg, 79110 Freiburg, Germany; (S.M.-B.); (I.D.); (P.M.); (F.E.B.); (A.K.T.)
- Freiburg Materials Research Center FMF, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany
| | - Pamela Molina
- Institute of Microsystems Engineering IMTEK, University of Freiburg, 79110 Freiburg, Germany; (S.M.-B.); (I.D.); (P.M.); (F.E.B.); (A.K.T.)
- Freiburg Materials Research Center FMF, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany
| | - Flor Estefany Bentley
- Institute of Microsystems Engineering IMTEK, University of Freiburg, 79110 Freiburg, Germany; (S.M.-B.); (I.D.); (P.M.); (F.E.B.); (A.K.T.)
- Freiburg Materials Research Center FMF, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany
| | - Arnaud Kamdem Tamo
- Institute of Microsystems Engineering IMTEK, University of Freiburg, 79110 Freiburg, Germany; (S.M.-B.); (I.D.); (P.M.); (F.E.B.); (A.K.T.)
- Freiburg Materials Research Center FMF, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany
| | - Renaud Passieux
- Laboratoire Ingénierie des Matériaux Polymères IMP, CNRS UMR 5223, University of Lyon, University Claude Bernard Lyon 1, CEDEX, 69622 Villeurbanne, France; (R.P.); (L.D.)
| | | | - Laurent David
- Laboratoire Ingénierie des Matériaux Polymères IMP, CNRS UMR 5223, University of Lyon, University Claude Bernard Lyon 1, CEDEX, 69622 Villeurbanne, France; (R.P.); (L.D.)
| | - Anayancy Osorio-Madrazo
- Institute of Microsystems Engineering IMTEK, University of Freiburg, 79110 Freiburg, Germany; (S.M.-B.); (I.D.); (P.M.); (F.E.B.); (A.K.T.)
- Freiburg Materials Research Center FMF, University of Freiburg, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies FIT, University of Freiburg, 79110 Freiburg, Germany
- Correspondence: ; Tel.: +49-761-203-67363
| |
Collapse
|
4
|
Kaliva M, Georgopoulou A, Dragatogiannis DA, Charitidis CA, Chatzinikolaidou M, Vamvakaki M. Biodegradable Chitosan- graft-Poly(l-lactide) Copolymers For Bone Tissue Engineering. Polymers (Basel) 2020; 12:E316. [PMID: 32033024 PMCID: PMC7077469 DOI: 10.3390/polym12020316] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 01/25/2020] [Accepted: 01/28/2020] [Indexed: 12/11/2022] Open
Abstract
The design and synthesis of new biomaterials with adjustable physicochemical and biological properties for tissue engineering applications have attracted great interest. In this work, chitosan-graft-poly(l-lactide) (CS-g-PLLA) copolymers were prepared by chemically binding poly(l-lactide) (PLLA) chains along chitosan (CS) via the "grafting to" approach to obtain hybrid biomaterials that present enhanced mechanical stability, due to the presence of PLLA, and high bioactivity, conferred by CS. Two graft copolymers were prepared, CS-g-PLLA(80/20) and CS-g-PLLA(50/50), containing 82 wt % and 55 wt % CS, respectively. Degradation studies of compressed discs of the copolymers showed that the degradation rate increased with the CS content of the copolymer. Nanomechanical studies in the dry state indicated that the copolymer with the higher CS content had larger Young modulus, reduced modulus and hardness values, whereas the moduli and hardness decreased rapidly following immersion of the copolymer discs in alpha-MEM cell culture medium for 24 h. Finally, the bioactivity of the hybrid copolymers was evaluated in the adhesion and growth of MC3T3-E1 pre-osteoblastic cells. In vitro studies showed that MC3T3-E1 cells exhibited strong adhesion on both CS-g-PLLA graft copolymer films from the first day in cell culture, whereas the copolymer with the higher PLLA content, CS-g-PLLA(50/50), supported higher cell growth.
Collapse
Affiliation(s)
- Maria Kaliva
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas (FORTH-IESL), 70013 Heraklion, Greece; (M.C.); (M.V.)
- Department of Materials Science and Technology, University of Crete, 70013 Heraklion, Greece;
| | - Anthie Georgopoulou
- Department of Materials Science and Technology, University of Crete, 70013 Heraklion, Greece;
| | - Dimitrios A. Dragatogiannis
- Research Unit of Advanced, Composite, Nano Materials & Nanotechnology, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zographou, 15780 Athens, Greece; (D.A.D.); (C.A.C.)
| | - Costas A. Charitidis
- Research Unit of Advanced, Composite, Nano Materials & Nanotechnology, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zographou, 15780 Athens, Greece; (D.A.D.); (C.A.C.)
| | - Maria Chatzinikolaidou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas (FORTH-IESL), 70013 Heraklion, Greece; (M.C.); (M.V.)
- Department of Materials Science and Technology, University of Crete, 70013 Heraklion, Greece;
| | - Maria Vamvakaki
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas (FORTH-IESL), 70013 Heraklion, Greece; (M.C.); (M.V.)
- Department of Materials Science and Technology, University of Crete, 70013 Heraklion, Greece;
| |
Collapse
|
5
|
Kristen M, Ainsworth MJ. Fiber Scaffold Patterning for Mending Hearts: 3D Organization Bringing the Next Step. Adv Healthc Mater 2020; 9:e1900775. [PMID: 31603288 PMCID: PMC7116178 DOI: 10.1002/adhm.201900775] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/14/2019] [Indexed: 12/14/2022]
Abstract
Heart failure (HF) is a leading cause of death worldwide. The most common conditions that lead to HF are coronary artery disease, myocardial infarction, valve disorders, high blood pressure, and cardiomyopathy. Due to the limited regenerative capacity of the heart, the only curative therapy currently available is heart transplantation. Therefore, there is a great need for the development of novel regenerative strategies to repair the injured myocardium, replace damaged valves, and treat occluded coronary arteries. Recent advances in manufacturing technologies have resulted in the precise fabrication of 3D fiber scaffolds with high architectural control that can support and guide new tissue growth, opening exciting new avenues for repair of the human heart. This review discusses the recent advancements in the novel research field of fiber patterning manufacturing technologies for cardiac tissue engineering (cTE) and to what extent these technologies could meet the requirements of the highly organized and structured cardiac tissues. Additionally, future directions of these novel fiber patterning technologies, designs, and applicability to advance cTE are presented.
Collapse
Affiliation(s)
- Marleen Kristen
- Regenerative Medicine Center, University Medical Center Utrecht,
Utrecht 3584 CT, The Netherlands; Department of Orthopedics, University Medical
Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Madison J. Ainsworth
- Regenerative Medicine Center, University Medical Center Utrecht,
Utrecht 3584 CT, The Netherlands; Department of Orthopedics, University Medical
Center Utrecht, Utrecht 3584 CX, The Netherlands
| |
Collapse
|
6
|
Yang D, Xiao J, Wang B, Li L, Kong X, Liao J. The immune reaction and degradation fate of scaffold in cartilage/bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109927. [DOI: 10.1016/j.msec.2019.109927] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 06/17/2019] [Accepted: 06/26/2019] [Indexed: 01/05/2023]
|
7
|
Munteanu BS, Sacarescu L, Vasiliu AL, Hitruc GE, Pricope GM, Sivertsvik M, Rosnes JT, Vasile C. Antioxidant/Antibacterial Electrospun Nanocoatings Applied onto PLA Films. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1973. [PMID: 30322165 PMCID: PMC6213579 DOI: 10.3390/ma11101973] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 09/30/2018] [Accepted: 10/11/2018] [Indexed: 11/28/2022]
Abstract
Polylactic acid (PLA) films were coated by coaxial electrospinning with essential and vegetable oils (clove and argan oils) and encapsulated into chitosan, in order to combine the biodegradability and mechanical properties of PLA substrates with the antimicrobial and antioxidant properties of the chitosan⁻oil nanocoatings. It has been established that the morphology of the electrospun nanocoatings mainly depend on the average molecular weight (MW) of chitosan. Oil beads, encapsulated into the main chitosan nanofibers, were obtained using high-MW chitosan (Chit-H). Oil encapsulated in chitosan naoparticles resulted when low-MW chitosan (Chit-L) was used. The coating layer, with a thickness of 100 ± 20 nm, had greater roughness for the samples containing Chit-H compared with the samples containing Chit-L. The coated PLA films had higher antibacterial activity when the nanocoating contained clove oil rather than when argan oil was used, for both types of chitosan. Nanocoatings containing Chit-H had higher antibacterial activity compared with those containing Chit-L, for both types of oil tested, due to the larger surface area of the rougher nanoscaled morphology of the coating layer that contained Chit-L. The chitosan⁻clove oil combination had higher antioxidant activity compared to the simple chitosan nanocoating, which confirmed their synergistic activities. The low activity of systems containing argan oil was explained by big differences between their chemical composition and viscosity.
Collapse
Affiliation(s)
| | - Liviu Sacarescu
- "P. Poni" Institute of Macromolecular Chemistry, Romanian Academy, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania.
| | - Ana-Lavinia Vasiliu
- "P. Poni" Institute of Macromolecular Chemistry, Romanian Academy, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania.
| | - Gabriela Elena Hitruc
- "P. Poni" Institute of Macromolecular Chemistry, Romanian Academy, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania.
| | - Gina M Pricope
- Veterinary and the Food Safety Laboratory, Food Safety Department, 700489 Iasi, Romania.
| | - Morten Sivertsvik
- Nofima AS, Deptartment of Processing Technology, Muninbakken 9-13, Tromsø 9291, Norway.
| | - Jan Thomas Rosnes
- Nofima AS, Deptartment of Processing Technology, Muninbakken 9-13, Tromsø 9291, Norway.
| | - Cornelia Vasile
- "P. Poni" Institute of Macromolecular Chemistry, Romanian Academy, 41A Grigore GhicaVoda Alley, 700487 Iasi, Romania.
| |
Collapse
|
8
|
Torres-Hernández YG, Ortega-Díaz GM, Téllez-Jurado L, Castrejón-Jiménez NS, Altamirano-Torres A, García-Pérez BE, Balmori-Ramírez H. Biological Compatibility of a Polylactic Acid Composite Reinforced with Natural Chitosan Obtained from Shrimp Waste. MATERIALS 2018; 11:ma11081465. [PMID: 30126167 PMCID: PMC6119920 DOI: 10.3390/ma11081465] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/01/2018] [Accepted: 06/01/2018] [Indexed: 01/04/2023]
Abstract
The aim of this work is to evaluate the effect of chitosan content (1, 3 and 5 wt %) dispersed in polylactic acid (PLA) on the structure and properties of composites. Also, the hydrolytic degradation, and the cell viability and adhesion of human MG-63 osteoblasts are analyzed to determine the composites’ suitability for use in tissue engineering. For the manufacture of the materials, natural chitosan was extracted chemically from shrimp exoskeleton. The composites were fabricated by extrusion, because it is a low-cost process, it is reproducible, and it does not compromise the biocompatibility of the materials. FT-IR and XRD show that the chitosan does not change the polymer structure, and interactions between the composite components are discarded. In vitro degradation tests show that the composites do not induce significant pH changes in phosphate buffer solution due to their low susceptibility to hydrolytic degradation. The adhesion and morphological characteristics of the osteoblasts are evaluated using confocal microscopy and scanning electron microscopy. The cell viability is determined by the MTT assay. Osteoblasts adhesion is observed on the surface of PLA and composites. A higher amount of chitosan, higher number of cells with osteoblastic morphology, and mineralized nodules are observed on the composite surface. The highest metabolic activity is evidenced at 21 days. The results suggest that the Polylactic acid/chitosan composites are potentially suitable for use as a biomaterial.
Collapse
Affiliation(s)
- Yaret Gabriela Torres-Hernández
- Department of Metallurgical and Materials Engineering, Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE), Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos (UPALM), Av. Instituto Politécnico Nacional S/N, C.P., Ciudad de México 07738, Mexico.
| | - Gloria Michel Ortega-Díaz
- Escuela Nacional de Ciencias Biológicas (ENCB), Department of Microbiology, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Casco de Santo Tomás. C.P., Ciudad de México 11340, Mexico.
| | - Lucía Téllez-Jurado
- Department of Metallurgical and Materials Engineering, Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE), Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos (UPALM), Av. Instituto Politécnico Nacional S/N, C.P., Ciudad de México 07738, Mexico.
| | - Nayeli Shantal Castrejón-Jiménez
- Escuela Nacional de Ciencias Biológicas (ENCB), Department of Microbiology, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Casco de Santo Tomás. C.P., Ciudad de México 11340, Mexico.
| | - Alejandro Altamirano-Torres
- Department of Materials, Universidad Autónoma Metropolitana-Azcapotzalco, San Pablo No.180, Col. Reynosa-Tamaulipas, C.P., Ciudad de México 02200, Mexico.
| | - Blanca Estela García-Pérez
- Escuela Nacional de Ciencias Biológicas (ENCB), Department of Microbiology, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Casco de Santo Tomás. C.P., Ciudad de México 11340, Mexico.
| | - Heberto Balmori-Ramírez
- Department of Metallurgical and Materials Engineering, Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE), Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos (UPALM), Av. Instituto Politécnico Nacional S/N, C.P., Ciudad de México 07738, Mexico.
| |
Collapse
|
9
|
Development of nanocomposite scaffolds based on TiO 2 doped in grafted chitosan/hydroxyapatite by freeze drying method and evaluation of biocompatibility. Int J Biol Macromol 2017; 101:51-58. [DOI: 10.1016/j.ijbiomac.2017.03.067] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 03/02/2017] [Accepted: 03/13/2017] [Indexed: 01/29/2023]
|
10
|
|
11
|
Qian W, Song T, Ye M, Xu P, Lu G, Huang X. PAA-g-PLA amphiphilic graft copolymer: synthesis, self-assembly, and drug loading ability. Polym Chem 2017. [DOI: 10.1039/c7py00762k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article reports the synthesis of a PAA-g-PLA amphiphilic polymer by the combination of RAFT polymerization and organocatalytic ROP, which could self-assemble into spheres in aqueous media for sustained release of doxorubicin.
Collapse
Affiliation(s)
- Wenhao Qian
- Department of Stomatology
- Shanghai Xuhui District Dental Center
- Shanghai 200032
- People's Republic of China
| | - Tao Song
- Department of Stomatology
- Shanghai Xuhui District Dental Center
- Shanghai 200032
- People's Republic of China
| | - Mao Ye
- Department of Stomatology
- Shanghai Xuhui District Dental Center
- Shanghai 200032
- People's Republic of China
| | - Peicheng Xu
- Department of Stomatology
- Shanghai Xuhui District Dental Center
- Shanghai 200032
- People's Republic of China
| | - Guolin Lu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- People's Republic of China
| | - Xiaoyu Huang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- People's Republic of China
| |
Collapse
|
12
|
Wang W, Zhou X, Wei M, Liu Z, Lu G, Huang X. Synthesis of an amphiphilic graft copolymer bearing a hydrophilic poly(acrylate acid) backbone for drug delivery of methotrexate. RSC Adv 2017. [DOI: 10.1039/c7ra11975e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This article reports the synthesis of a PAA-g-PLA amphiphilic graft polymer, which could self-assemble into large compound micelles in aqueous media for sustained release of MTX.
Collapse
Affiliation(s)
- Wei Wang
- Department of Orthopaedic Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200127
| | - Xin Zhou
- Department of Orthopaedic Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200127
| | - Min Wei
- Department of Orthopaedic Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200127
| | - Zude Liu
- Department of Orthopaedic Surgery
- Renji Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200127
| | - Guolin Lu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- People's Republic of China
| | - Xiaoyu Huang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- People's Republic of China
| |
Collapse
|
13
|
Salehi M, Farzamfar S, Bastami F, Tajerian R. FABRICATION AND CHARACTERIZATION OF ELECTROSPUN PLLA/COLLAGEN NANOFIBROUS SCAFFOLD COATED WITH CHITOSAN TO SUSTAIN RELEASE OF ALOE VERA GEL FOR SKIN TISSUE ENGINEERING. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2016. [DOI: 10.4015/s1016237216500356] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background and aim: Healing of fire-induced wounds has been still a challenge in clinical issues. The aim of this study was to fabricate a nanofibrous poly (L-lactic acid)/collagen (PLLA/COL) scaffold with sustained release of aloe vera (AV) gel using a chitosan (CT)-coated layer for skin tissue engineering applications. Material and methods: Morphology, porosity, tensile strength, hydrophilicity, degradation rate, water vapor permeability and water uptake ratio of the scaffold were characterized. The behaviors of mouse fibroblasts (L929) were evaluated on the scaffold. Results: We observed that although the porosity of the scaffold was decreased, other characteristics were enhanced by coating a CT layer. The scaffold supports attachment, viability and proliferation of mouse fibroblasts. Conclusion: Consequently, the PLLA/COL scaffold coated with CT for sustained release of AV gel can be considered as a desirable scaffold for skin tissue engineering.
Collapse
Affiliation(s)
- Majid Salehi
- Department of Tissue Engineering and Cell Therapy, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Farzamfar
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farshid Bastami
- Research Institute of Dental Sciences, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Roksana Tajerian
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Science, International Campus (TUMS-IC), Tehran, Iran
| |
Collapse
|
14
|
Compositional and in Vitro Evaluation of Nonwoven Type I Collagen/Poly-dl-lactic Acid Scaffolds for Bone Regeneration. J Funct Biomater 2015; 6:667-86. [PMID: 26251924 PMCID: PMC4598677 DOI: 10.3390/jfb6030667] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 07/20/2015] [Accepted: 07/30/2015] [Indexed: 11/23/2022] Open
Abstract
Poly-dl-lactic acid (PDLLA) was blended with type I collagen to attempt to overcome the instantaneous gelation of electrospun collagen scaffolds in biological environments. Scaffolds based on blends of type I collagen and PDLLA were investigated for material stability in cell culture conditions (37 °C; 5% CO2) in which post-electrospinning glutaraldehyde crosslinking was also applied. The resulting wet-stable webs were cultured with bone marrow stromal cells (HBMSC) for five weeks. Scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), Fourier transform infra-red spectroscopy (FTIR) and biochemical assays were used to characterise the scaffolds and the consequent cell-scaffold constructs. To investigate any electrospinning-induced denaturation of collagen, identical PDLLA/collagen and PDLLA/gelatine blends were electrospun and their potential to promote osteogenic differentiation investigated. PDLLA/collagen blends with w/w ratios of 40/60, 60/40 and 80/20 resulted in satisfactory wet stabilities in a humid environment, although chemical crosslinking was essential to ensure long term material cell culture. Scaffolds of PDLLA/collagen at a 60:40 weight ratio provided the greatest stability over a five-week culture period. The PDLLA/collagen scaffolds promoted greater cell proliferation and osteogenic differentiation compared to HMBSCs seeded on the corresponding PDLLA/gelatine scaffolds, suggesting that any electrospinning-induced collagen denaturation did not affect material biofunctionality within 5 weeks in vitro.
Collapse
|
15
|
Abstract
Biobased and biodegradable polymers have become more and more interesting in view of waste management and crude oil depletion.
Collapse
Affiliation(s)
- Stijn Corneillie
- Polymer Chemistry and Materials
- Department of Chemistry
- KU Leuven
- Belgium
| | - Mario Smet
- Polymer Chemistry and Materials
- Department of Chemistry
- KU Leuven
- Belgium
| |
Collapse
|
16
|
Yin D, Wu H, Liu C, Zhang J, Zhou T, Wu J, Wan Y. Fabrication of composition-graded collagen/chitosan–polylactide scaffolds with gradient architecture and properties. REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2014.07.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
17
|
Ding F, Deng H, Du Y, Shi X, Wang Q. Emerging chitin and chitosan nanofibrous materials for biomedical applications. NANOSCALE 2014; 6:9477-93. [PMID: 25000536 DOI: 10.1039/c4nr02814g] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Over the past several decades, we have witnessed significant progress in chitosan and chitin based nanostructured materials. The nanofibers from chitin and chitosan with appealing physical and biological features have attracted intense attention due to their excellent biological properties related to biodegradability, biocompatibility, antibacterial activity, low immunogenicity and wound healing capacity. Various methods, such as electrospinning, self-assembly, phase separation, mechanical treatment, printing, ultrasonication and chemical treatment were employed to prepare chitin and chitosan nanofibers. These nanofibrous materials have tremendous potential to be used as drug delivery systems, tissue engineering scaffolds, wound dressing materials, antimicrobial agents, and biosensors. This review article discusses the most recent progress in the preparation and application of chitin and chitosan based nanofibrous materials in biomedical fields.
Collapse
Affiliation(s)
- Fuyuan Ding
- School of Resource and Environmental Science and Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.
| | | | | | | | | |
Collapse
|
18
|
Jiang T, Deng M, James R, Nair LS, Laurencin CT. Micro- and nanofabrication of chitosan structures for regenerative engineering. Acta Biomater 2014; 10:1632-45. [PMID: 23851172 DOI: 10.1016/j.actbio.2013.07.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/31/2013] [Accepted: 07/01/2013] [Indexed: 11/24/2022]
Abstract
Repair and regeneration of human tissues and organs using biomaterials, cells and/or growth factors is the ultimate goal of tissue engineers. One of the grand challenges in this field is to closely mimic the structures and properties of native tissues. Regenerative engineering-the convergence of tissue engineering with advanced materials science, stem cell science, and developmental biology-represents the next valuable tool to overcome the challenges. This article reviews the recent progress in developing advanced chitosan structures using various fabrication techniques. These chitosan structures, together with stem cells and functional biomolecules, may provide a robust platform to gain insight into cell-biomaterial interactions and may function as excellent artificial extracellular matrices to regenerate complex human tissues and biological systems.
Collapse
|
19
|
Manufacture of layered collagen/chitosan-polycaprolactone scaffolds with biomimetic microarchitecture. Colloids Surf B Biointerfaces 2014; 113:352-60. [DOI: 10.1016/j.colsurfb.2013.09.028] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 11/22/2022]
|
20
|
Ucar S, Yilgor P, Hasirci V, Hasirci N. Chitosan-based wet-spun scaffolds for bioactive agent delivery. J Appl Polym Sci 2013. [DOI: 10.1002/app.39629] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Pinar Yilgor
- Department of Biomedical Engineering; Faculty of Engineering and Architecture; Cukurova University; 01330; Adana; Turkey
| | | | | |
Collapse
|
21
|
Sarkar SD, Farrugia BL, Dargaville TR, Dhara S. Chitosan-collagen scaffolds with nano/microfibrous architecture for skin tissue engineering. J Biomed Mater Res A 2013; 101:3482-92. [DOI: 10.1002/jbm.a.34660] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 01/24/2013] [Accepted: 02/04/2013] [Indexed: 12/16/2022]
Affiliation(s)
- Soumi Dey Sarkar
- School of Medical Science and Technology; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| | - Brooke L. Farrugia
- Institute of Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Queensland 4059 Australia
| | - Tim R. Dargaville
- Institute of Health and Biomedical Innovation; Queensland University of Technology; Kelvin Grove Queensland 4059 Australia
| | - Santanu Dhara
- School of Medical Science and Technology; Indian Institute of Technology Kharagpur; Kharagpur 721302 India
| |
Collapse
|
22
|
Niu X, Wang L, Chen P, Li X, Zhou G, Feng Q, Fan Y. Emulsion Self-Assembly Synthesis of Chitosan/Poly(lactic-co
-glycolic acid) Stimuli-Responsive Amphiphiles. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201200597] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
23
|
Zhou N, Zan X, Wang Z, Wu H, Yin D, Liao C, Wan Y. Galactosylated chitosan-polycaprolactone nanoparticles for hepatocyte-targeted delivery of curcumin. Carbohydr Polym 2013; 94:420-9. [PMID: 23544558 DOI: 10.1016/j.carbpol.2013.01.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 01/05/2013] [Accepted: 01/08/2013] [Indexed: 12/21/2022]
Abstract
Galactosylated chitosan-polycaprolactone (Gal-CH-PCL) copolymers with a galactosylation degree of around 10% and varied PCL percentages less than 40 wt% were synthesized and used to produce nanoparticles for delivering curcumin. Some nanoparticles with encapsulation efficiency of 70% or higher and sizes changing from 100 to 250 nm were able to deliver curcumin in a controlled manner. PCL content in Gal-CH-PCLs was found to be a key factor for governing the release behavior of nanoparticles. Hepatocyte-targeted characteristic of nanoparticles was confirmed using human hepatocellular carcinoma (HepG2) cells. In comparison to free curcumin, curcumin-loaded Gal-CH-PCL nanoparticles well retained its anticancer activity. At an equivalent curcumin-dose of around 20 μg/mL that was found to be relatively safe to human normal liver cells, the results obtained from flow-cytometry revealed that some optimized Gal-CH-PCL nanoparticles showed more than 6-fold increasing abilities to induce the apoptosis and necrosis of HepG2 cells during 72 h treatment compared to free curcumin.
Collapse
Affiliation(s)
- Nuo Zhou
- The Affiliated Stomatology Hospital, Guangxi Medical University, Nanning 530021, PR China
| | | | | | | | | | | | | |
Collapse
|
24
|
Wan Y, Huang J, Zhang J, Yin D, Zheng Z, Liao C, Sun S. Investigation of mechanical properties and degradability of multi-channel chitosan–polycaprolactone/collagen conduits. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2012.10.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
25
|
Lin YS, Huang KS, Yang CH, Wang CY, Yang YS, Hsu HC, Liao YJ, Tsai CW. Microfluidic synthesis of microfibers for magnetic-responsive controlled drug release and cell culture. PLoS One 2012; 7:e33184. [PMID: 22470443 PMCID: PMC3314645 DOI: 10.1371/journal.pone.0033184] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Accepted: 02/06/2012] [Indexed: 11/18/2022] Open
Abstract
This study demonstrated the fabrication of alginate microfibers using a modular microfluidic system for magnetic-responsive controlled drug release and cell culture. A novel two-dimensional fluid-focusing technique with multi-inlets and junctions was used to spatiotemporally control the continuous laminar flow of alginate solutions. The diameter of the manufactured microfibers, which ranged from 211 µm to 364 µm, could be well controlled by changing the flow rate of the continuous phase. While the model drug, diclofenac, was encapsulated into microfibers, the drug release profile exhibited the characteristic of a proper and steady release. Furthermore, the diclofenac release kinetics from the magnetic iron oxide-loaded microfibers could be controlled externally, allowing for a rapid drug release by applying a magnetic force. In addition, the successful culture of glioblastoma multiforme cells in the microfibers demonstrated a good structural integrity and environment to grow cells that could be applied in drug screening for targeting cancer cells. The proposed microfluidic system has the advantages of ease of fabrication, simplicity, and a fast and low-cost process that is capable of generating functional microfibers with the potential for biomedical applications, such as drug controlled release and cell culture.
Collapse
Affiliation(s)
- Yung-Sheng Lin
- Department of Applied Cosmetology and Master Program of Cosmetic Science, Hungkuang University, Taichung, Taiwan
| | - Keng-Shiang Huang
- School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung, Taiwan
- * E-mail: (K-SH); (C-HY)
| | - Chih-Hui Yang
- Department of Biological Science and Technology, I-Shou University, Kaohsiung, Taiwan
- * E-mail: (K-SH); (C-HY)
| | - Chih-Yu Wang
- Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Yuh-Shyong Yang
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Hsiang-Chen Hsu
- Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Yu-Ju Liao
- Department of Applied Cosmetology and Master Program of Cosmetic Science, Hungkuang University, Taichung, Taiwan
| | - Chia-Wen Tsai
- Department of Information Management, Ming Chuan University, Taipei, Taiwan
| |
Collapse
|
26
|
Zhang Z, Cui H. Biodegradability and biocompatibility study of poly(chitosan-g-lactic acid) scaffolds. Molecules 2012; 17:3243-58. [PMID: 22418927 PMCID: PMC6268052 DOI: 10.3390/molecules17033243] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 02/26/2012] [Accepted: 03/12/2012] [Indexed: 12/20/2022] Open
Abstract
A biodegradable, biocompatible poly(chitosan-g-lactic acid) (PCLA) scaffold was prepared and evaluated in vitro and in vivo. The PCLA scaffold was obtained by grafting lactic acid (LA) onto the amino groups on chitosan (CS) without a catalyst. The PCLA scaffolds were characterized by Fourier Transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The biodegradabilty was determined by mass loss in vitro, and degradation in vivo as a function of feed ratio of LA/CS. Bone marrow mesenchymal stem cell (BMSC) culture experiments and histological examination were performed to evaluate the PCLA scaffolds’ biocompatibility. The results indicated that PCLA was promising for tissue engineering application.
Collapse
Affiliation(s)
- Zhe Zhang
- Institute of Biochemical and Biotechnological Drugs, School of Pharmacy, Shandong University, Jinan 250012, China;
- National Glycoengineering Research Center, Shandong University, Jinan 250012, China
| | - Huifei Cui
- Institute of Biochemical and Biotechnological Drugs, School of Pharmacy, Shandong University, Jinan 250012, China;
- National Glycoengineering Research Center, Shandong University, Jinan 250012, China
- Author to whom correspondence should be addressed; ; Tel.: +86-531-8838-0288
| |
Collapse
|
27
|
Neves SC, Moreira Teixeira LS, Moroni L, Reis RL, Van Blitterswijk CA, Alves NM, Karperien M, Mano JF. Chitosan/poly(epsilon-caprolactone) blend scaffolds for cartilage repair. Biomaterials 2010; 32:1068-79. [PMID: 20980050 DOI: 10.1016/j.biomaterials.2010.09.073] [Citation(s) in RCA: 136] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Accepted: 09/19/2010] [Indexed: 11/19/2022]
Abstract
Chitosan (CHT)/poly(ɛ-caprolactone) (PCL) blend 3D fiber-mesh scaffolds were studied as possible support structures for articular cartilage tissue (ACT) repair. Micro-fibers were obtained by wet-spinning of three different polymeric solutions: 100:0 (100CHT), 75:25 (75CHT) and 50:50 (50CHT) wt.% CHT/PCL, using a common solvent solution of 100 vol.% of formic acid. Scanning electron microscopy (SEM) analysis showed a homogeneous surface distribution of PCL. PCL was well dispersed throughout the CHT phase as analyzed by differential scanning calorimetry and Fourier transform infrared spectroscopy. The fibers were folded into cylindrical moulds and underwent a thermal treatment to obtain the scaffolds. μCT analysis revealed an adequate porosity, pore size and interconnectivity for tissue engineering applications. The PCL component led to a higher fiber surface roughness, decreased the scaffolds swelling ratio and increased their compressive mechanical properties. Biological assays were performed after culturing bovine articular chondrocytes up to 21 days. SEM analysis, live-dead and metabolic activity assays showed that cells attached, proliferated, and were metabolically active over all scaffolds formulations. Cartilaginous extracellular matrix (ECM) formation was observed in all formulations. The 75CHT scaffolds supported the most neo-cartilage formation, as demonstrated by an increase in glycosaminoglycan production. In contrast to 100CHT scaffolds, ECM was homogenously deposited on the 75CHT and 50CHT scaffolds. Although mechanical properties of the 50CHT scaffold were better, the 75CHT scaffold facilitated better neo-cartilage formation.
Collapse
Affiliation(s)
- Sara C Neves
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Department of Polymer Engineering, University of Minho, AvePark, Zona Industrial da Gandra, S. Cláudio do Barco 4806-909, Caldas das Taipas, Guimarães, Portugal
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Varying the diameter of aligned electrospun fibers alters neurite outgrowth and Schwann cell migration. Acta Biomater 2010; 6:2970-8. [PMID: 20167292 DOI: 10.1016/j.actbio.2010.02.020] [Citation(s) in RCA: 197] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 01/06/2010] [Accepted: 02/10/2010] [Indexed: 11/21/2022]
Abstract
Aligned, electrospun fibers have shown great promise in facilitating directed neurite outgrowth within cell and animal models. While electrospun fiber diameter does influence cellular behavior, it is not known how aligned, electrospun fiber scaffolds of differing diameter influence neurite outgrowth and Schwann cell (SC) migration. Thus, the goal of this study was to first create highly aligned, electrospun fiber scaffolds of varying diameter and then assess neurite and SC behavior from dorsal root ganglia (DRG) explants. Three groups of highly aligned, electrospun poly-l-lactic acid (PLLA) fibers were created (1325+383 nm, large diameter fibers; 759+179 nm, intermediate diameter fibers; and 293+65 nm, small diameter fibers). Embryonic stage nine (E9) chick DRG were cultured on fiber substrates for 5 days and then the explants were stained against neurofilament and S100. DAPI stain was used to assess SC migration. Neurite length and SC migration distance were determined. In general, the direction of neurite extension and SC migration were guided along the aligned fibers. On the small diameter fiber substrate, the neurite length was 42% and 36% shorter than those on the intermediate and large fiber substrates, respectively. Interestingly, SC migration did not correlate with that of neurite extension in all situations. SCs migrated equivalently with extending neurites in both the small and large diameter scaffolds, but lagged behind neurites on the intermediate diameter scaffolds. Thus, in some situations, topography alone is sufficient to guide neurites without the leading support of SCs. Scanning electron microscopy images show that neurites cover the fibers and do not reside exclusively between fibers. Further, at the interface between fibers and neurites, filopodial extensions grab and attach to nearby fibers as they extend down the fiber substrate. Overall, the results and observations suggest that fiber diameter is an important parameter to consider when constructing aligned, electrospun fibers for nerve regeneration applications.
Collapse
|
29
|
Sangsanoh P, Suwantong O, Neamnark A, Cheepsunthorn P, Pavasant P, Supaphol P. In vitro biocompatibility of electrospun and solvent-cast chitosan substrata towards Schwann, osteoblast, keratinocyte and fibroblast cells. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.10.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
30
|
Hayakawa T, Yoshinari M, Nitta K, Inoue K. Collagen Nanofiber on Titanium or Partially Stabilized Zirconia by Electrospray Deposition. J HARD TISSUE BIOL 2010. [DOI: 10.2485/jhtb.19.5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
31
|
Jayakumar R, Prabaharan M, Nair S, Tamura H. Novel chitin and chitosan nanofibers in biomedical applications. Biotechnol Adv 2010; 28:142-50. [DOI: 10.1016/j.biotechadv.2009.11.001] [Citation(s) in RCA: 739] [Impact Index Per Article: 52.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2009] [Revised: 10/27/2009] [Accepted: 11/04/2009] [Indexed: 01/19/2023]
|
32
|
Jung JH, Choi CH, Chung S, Chung YM, Lee CS. Microfluidic synthesis of a cell adhesive Janus polyurethane microfiber. LAB ON A CHIP 2009; 9:2596-2602. [PMID: 19680584 DOI: 10.1039/b901308c] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We present a simple synthetic approach for the preparation of cell attachable Janus polyurethane (PU) microfibers in a microfluidic system. The synthesis was performed by using laminar flows of multiple streams with spontaneous formation of carbon dioxide bubbles resulting in an asymmetrically porous PU microfiber. The fabricated asymmetric microfiber (Janus microfiber) provides two distinctive properties: one is a porous region to promote the cellular adhesion and the other is a nonporous region rendering the mechanical strength of the scaffold. The Janus microfibers show dramatic improvement of cell adhesion, proliferation, and viability over a culture period. Cells cultured on the fibers easily bridged gaps between microfibers by joining together to form a cell sheet. The maximum distance between fibers that fibroblasts bridged is approximately 200 microm over 15 days. The Janus microfiber can be used for not only an alternative 2D cell culture plate but also as a novel 3D scaffold for tissue engineering without any need for elegant surface modification for enhancing cell adhesions.
Collapse
Affiliation(s)
- Jae-Hoon Jung
- Department of Chemical Engineering, Chungnam National University, Yuseong-gu, Daejeon, 305-764, South Korea
| | | | | | | | | |
Collapse
|
33
|
Kuo YC, Yeh CF, Yang JT. Differentiation of bone marrow stromal cells in poly(lactide-co-glycolide)/chitosan scaffolds. Biomaterials 2009; 30:6604-13. [PMID: 19712972 DOI: 10.1016/j.biomaterials.2009.08.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Accepted: 08/13/2009] [Indexed: 10/20/2022]
Abstract
This study investigates the physicochemical properties of poly(lactide-co-glycolide) (PLGA)/chitosan scaffolds and the neuron growth factor (NGF)-guided differentiation of bone marrow stromal cells (BMSCs) in the scaffolds. The scaffolds were prepared by the crosslinking of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, N-hydroxysuccinimide and genipin, and the differentiating BMSCs were characterized against CD44, CD90 and NeuN. The scaffold with 20% PLGA yielded 95% porosity, Young's modulus of 13MPa, 70% adhesion of BMSCs and 1.6-fold increase in the cell viability over 7-day cultivation. BMSCs without guidance in the PLGA/chitosan scaffolds were prone to differentiate toward osteoblasts with apparent deposition of calcium. When NGF was introduced, an increased weight percentage of PLGA yielded more identified neurons. In addition, mature neurons emerged from the PLGA-rich biomaterials after induction with NGF over 2 days. A proper control over the physical and biomedical property of the scaffolds and the NGF-guided differentiation of BMSCs can be promising for nerve regeneration.
Collapse
Affiliation(s)
- Yung-Chih Kuo
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan 62102, Republic of China.
| | | | | |
Collapse
|