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Lao M, Wang Y, Li X, Li J, Ning X, Yin S, Deng X. Effect of Specific Surface Area and Hydrophobicity of Electrospun Nanofibers on the Sustained Release Performance of Diclofenac Sodium. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39018474 DOI: 10.1021/acs.langmuir.4c01909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
Nanofibers produced by electrospinning are suitable options for slow-release materials. Diclofenac sodium (DS) is a nonsteroidal anti-inflammatory medication with a brief half-life that can serve as an effective sustained-release agent. This paper presents a novel method for producing DS-sustained release nanofibers by electrostatic spinning processes. During the preparation, the slow-release capabilities of biodegradable materials poly(lactic acid) (PLA) and polycaprolactone (PCL) are investigated. A composite drug-carrying scaffold is prepared to enhance the sustained-release performance. The sustained release ability is affected by the specific surface area of the nanofibers and the hydrophobicity of the polymer. The findings indicate that the composite nanofiber with a PLA/PCL ratio of 1:1 demonstrates the most effective sustained-release performance. The release rate is mostly influenced by the hydrophobicity of the polymer at this point. Sustained-release kinetic simulations were performed and revealed that the release of nanofibers follows a first-order release paradigm. This work presents a straightforward approach for creating a sustained-release formulation of DS.
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Affiliation(s)
- Min Lao
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Yingjie Wang
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Xin Li
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Junlang Li
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Xin Ning
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Shaofeng Yin
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
| | - Xiaoting Deng
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, China
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2
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dos Santos MCF, dos Santos Cavalcante LP, de Andrade KF, da Silva AF, de Araújo Ferreira Muniz I, de Lima JM, Aguiar RT, Tavares JF, Castellano LRC, da Silva SD, Bonan PRF. Chitosan sponges and polycaprolactone nanoparticles carrying tranexamic acid as hemostatic agent: Synthesis, characterization and bioapplication. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Maria Carolina Fernandes dos Santos
- Laboratory for Cell Culture and Analysis Federal University of Paraiba, Health Sciences Center—Campus I, Technical School of Health João Pessoa Paraíba Brazil
| | - Luiza Peixoto dos Santos Cavalcante
- Laboratory for Cell Culture and Analysis Federal University of Paraiba, Health Sciences Center—Campus I, Technical School of Health João Pessoa Paraíba Brazil
| | - Karlivânia Ferreira de Andrade
- Laboratory for Cell Culture and Analysis Federal University of Paraiba, Health Sciences Center—Campus I, Technical School of Health João Pessoa Paraíba Brazil
| | - Alan Frazão da Silva
- Laboratory for Cell Culture and Analysis Federal University of Paraiba, Health Sciences Center—Campus I, Technical School of Health João Pessoa Paraíba Brazil
| | | | - Jefferson Muniz de Lima
- Post Graduate Program in Dentistry Federal University of Pernambuco, Health Sciences Center Recife Prince Edward Island Brazil
| | - Rebeca Tibau Aguiar
- Integrated Laboratory of Biomaterials Federal University of Paraíba, Health Sciences Center João Pessoa Paraíba Brazil
| | - Josean Fechine Tavares
- Laboratory of Pharmaceutical Technology Federal University of Paraíba João Pessoa Paraíba Brazil
| | - Lúcio Roberto Cançado Castellano
- Laboratory for Cell Culture and Analysis Federal University of Paraiba, Health Sciences Center—Campus I, Technical School of Health João Pessoa Paraíba Brazil
| | | | - Paulo Rogério Ferreti Bonan
- Department of Clinical and Social Dentistry Federal University of Paraíba, Health Sciences Center João Pessoa Paraíba Brazil
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3
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A review of protein adsorption and bioactivity characteristics of poly ε-caprolactone scaffolds in regenerative medicine. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110892] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4
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Li S, Culkin A, Jones DS, Andrews GP. Development of Polycaprolactone-Based metronidazole matrices for intravaginal extended drug delivery using a mechanochemically prepared therapeutic deep eutectic system. Int J Pharm 2021; 593:120071. [PMID: 33246048 DOI: 10.1016/j.ijpharm.2020.120071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/02/2020] [Accepted: 11/06/2020] [Indexed: 11/25/2022]
Abstract
The engineering of crystalline multi-component drug systems, including cocrystals and salts, is now an established method of modifying the physicochemical properties and dissolution behaviour of an active ingredient. Remarkably, liquid drug systems, including therapeutic ionic liquids and therapeutic deep eutectic solvents (THEDES), remain largely unexplored as an untapped reservoir for drug modification. In this work, the formation of a THEDES containing metronidazole (MET), the preferred first-line treatment for bacterial vaginosis (BV), was explored. The formed THEDES was evaluated for its dissolution behaviour from a simple polycaprolactone (PCL) matrix, in order to achieve an extended release, balanced with an appropriate onset of action, hence offering improved MET intravaginal application. To minimise handling of the liquid THEDES, an end-to-end continuous process that enables feeding of the raw materials in their respective solid forms, and collection of a solidified final formulation is presented. The concurrent THEDES formation and formulation were carried out using a bench scale (approx. 10 g) twin-screw hot melt extruder. The chosen parent reagents have shown sufficiently strong reactivity and resulted in successful and complete conversion to THEDES while in the presence of PCL, during the extrusion process. The formulated THEDES-PCL matrix exhibited significantly improved onset of drug release followed by a controlled delivery of MET over a total 7-day period in SVF, proving itself as a viable alternative to oral therapy.
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Affiliation(s)
- Shu Li
- The Pharmaceutical Engineering Group, School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland BT9 7BL, UK; China Medical University - Queen's University Belfast Joint College (CQC), No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China.
| | - Alice Culkin
- The Pharmaceutical Engineering Group, School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland BT9 7BL, UK
| | - David S Jones
- The Pharmaceutical Engineering Group, School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland BT9 7BL, UK
| | - Gavin P Andrews
- The Pharmaceutical Engineering Group, School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, Northern Ireland BT9 7BL, UK; China Medical University - Queen's University Belfast Joint College (CQC), No.77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning Province, PR China
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5
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Dual Network Hydrogels Incorporated with Bone Morphogenic Protein-7-Loaded Hyaluronic Acid Complex Nanoparticles for Inducing Chondrogenic Differentiation of Synovium-Derived Mesenchymal Stem Cells. Pharmaceutics 2020; 12:pharmaceutics12070613. [PMID: 32630047 PMCID: PMC7407334 DOI: 10.3390/pharmaceutics12070613] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/19/2020] [Accepted: 06/26/2020] [Indexed: 01/30/2023] Open
Abstract
Alginate-poloxamer (ALG-POL) copolymer with optimal POL content was synthesized, and it was combined with silk fibroin (SF) for building ALG-POL/SF dual network hydrogels. Hyaluronic acid(HA)/chitosan-poly(dioxanone)(CH-PDO) complex nanoparticles (NPs) with optimized composition and high encapsulation efficiency were employed as a vehicle for loading bone morphogenic protein-7 (BMP-7). BMP-7-loaded HA/CH-PDO NPs were incorporated into ALG-POL/SF hydrogel for constructing composite gels to achieve controlled release of BMP-7. These gels showed thermosensitive sol-gel transitions near physiological temperature and pH; and they were tested to be elastic, tough and strong. Some gels exhibited abilities to administer the BMP-7 release in nearly linear manners for a few weeks. Synovium-derived mesenchymal stem cells (SMSCs) were seeded into optimally fabricated gels for assessing their chondrogenic differentiation potency. Real-time PCR analyses showed that the blank ALG-POL/SF gels were not able to induce the chondrogenic differentiation of SMSCs, whereas SMSCs were detected to significantly express cartilage-related genes once they were seeded in the BMP-7-loaded ALG-POL/SF gel for two weeks. The synthesis of cartilaginous matrix components further confirmed that SMSCs seeded in the BMP-7-loaded ALG-POL/SF gel differentiated toward chondrogenesis. Results suggest that BMP-7-loaded ALG-POL/SF composite gels can function as a promising biomaterial for cartilage tissue engineering applications.
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Thinakaran S, Loordhuswamy A, Venkateshwapuram Rengaswami G. Electrophoretic deposition of chitosan/nano silver embedded micro sphere on centrifugal spun fibrous matrices - A facile biofilm resistant biocompatible material. Int J Biol Macromol 2020; 148:68-78. [PMID: 31931057 DOI: 10.1016/j.ijbiomac.2020.01.086] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 12/30/2019] [Accepted: 01/08/2020] [Indexed: 11/29/2022]
Abstract
Micro fibrous polycaprolactone (PCL) mat generally used for biomedical application was produced by facile centrifugal spinning system (C-Spin). The produced mat exhibited good structural integrity and good flexibility. The developed mat was used as substrate for electrophoretic deposition (EPD) of chitosan and polyethylene glycol (PEG) along with silver nano particles (AgNPs). During the EPD process, polymeric micro spheres embedded with silver nano particles were formed and deposited on the C-Spun substrates and the size of AgNPs were found to be around 15 nm. Surface topography of all coated samples were analyzed and found that the deposition was neat and uniform. Swelling behavior of the coated substrates were studied and found that CS/HMP/AgNPs coated substrates showed 274% swelling compared to their own dry weight. Release profile of silver nanoparticles confirmed that initial burst release followed by sustained release for CS/HMP/AgNPs coated substrates and this might be attributed to the hydrophilicity and high swellability of HMP. All AgNPs coated samples were completely prevent the bacterial biofilm formation and CS/HMP/AgNPs showed better reduction in bacterial growth on matured biofilm model. Cell proliferation studies confirmed that CS/HMP/AgNPs is biocompatible and can be used as a wound dressing material.
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Kang PL, Huang HH, Chen T, Ju KC, Kuo SM. Angiogenesis-promoting effect of LIPUS on hADSCs and HUVECs cultured on collagen/hyaluronan scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:22-33. [PMID: 31146993 DOI: 10.1016/j.msec.2019.04.045] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/07/2019] [Accepted: 04/12/2019] [Indexed: 02/08/2023]
Abstract
Angiogenesis refers to blood vessel formation through endothelial cell migration and proliferation. Angiogenesis is crucial and beneficial for wound healing and tissue regeneration. In the current study, we prepared porous collagen and collagen/hyaluronan (Col/HA) scaffolds composed of collagen (7 mg/mL) and hyaluronan (HA) (0.5 w%, 1 w%, and 1.5 w%) as culture vehicles for coculture of human adipose-derived stem cells (hADSCs) and human umbilical vein endothelial cells (HUVECs). These scaffolds were combined with low-intensity pulsed ultrasound (LIPUS) to investigate and evaluate angiogenesis in the coculture cell/scaffold constructs in vitro and in vivo. Scaffold porosity decreased (from 74.4% to 60.7%) and readily degraded after addition of various ratios of HA. The porous scaffolds all had high water content (~98%) and similar mechanical properties. The hADSCs alone and hADSCs cocultured with HUVECs exhibited stable proliferative profiles on the Col/HA scaffolds; furthermore, LIPUS significantly enhanced cell growth on the collagen and Col/0.5HA scaffolds by approximately 1.85- and 1.5-fold, respectively, compared with the cells that did not receive LIPUS treatment. In vivo immunohistochemistry results indicated stronger immunofluorescent CD31 presence and vascular endothelial cadherin messenger RNA expression in the hADSCs/HUVECs coculture/scaffold implantation in rats that received LIPUS treatment compared with those that received no such treatment. Our results demonstrated that the hADSCs/HUVECs cocultured on fabricated collagen and Col/HA scaffolds combined with LIPUS treatment had angiogenesis-promoting capability and therapeutic potential when angiogenesis is demanded.
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Affiliation(s)
- Pei Leun Kang
- Cardiac Surgery, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan; Shu-Zen Junior College of Medicine and Management, Kaohsiung City, Taiwan
| | - Han Hsiang Huang
- Department of Veterinary Medicine, National Chiayi University, Chiayi City, Taiwan
| | - Ting Chen
- Department of Biomedical Engineering, I-Shou University, Kaohsiung City, Taiwan
| | - Kuen Cheng Ju
- Department of Biomedical Engineering, I-Shou University, Kaohsiung City, Taiwan
| | - Shyh Ming Kuo
- Department of Biomedical Engineering, I-Shou University, Kaohsiung City, Taiwan.
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Wang JH, Chen J, Kuo SM, Mitchell GM, Lim SY, Liu GS. Methods for Assessing Scaffold Vascularization In Vivo. Methods Mol Biol 2019; 1993:217-226. [PMID: 31148090 DOI: 10.1007/978-1-4939-9473-1_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The success of tissue engineering hinges on the rapid and sufficient vascularization of the neotissue. For efficient vascular network formation within three-dimensional (3D) constructs, biomaterial scaffolds that can support survival of endothelial cells as well as formation and maturation of a capillary network in vivo are highly sought after. Here, we outline a method to biofabricate 3D porous collagen scaffolds that can support extrinsic and intrinsic vascularization using two different in vivo animal models-the mouse subcutaneous implant model (extrinsic vascularization, capillary growth within the scaffold originating from host tissues outside the scaffold) and the rat tissue engineering chamber model (intrinsic vascularization, capillary growth within the scaffold derived from a centrally positioned vascular pedicle). These in vivo vascular tissue engineering approaches hold a great promise for the generation of clinically viable vascularized constructs. Moreover, the 3D collagen scaffolds can also be employed for 3D cell culture and for in vivo delivery of growth factors and cells.
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Affiliation(s)
- Jiang-Hui Wang
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
- Department of Medicine, Surgery and Ophthalmology, University of Melbourne, East Melbourne, VIC, Australia
| | - Jinying Chen
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
| | - Shyh-Ming Kuo
- Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Geraldine M Mitchell
- Department of Medicine, Surgery and Ophthalmology, University of Melbourne, East Melbourne, VIC, Australia
- O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, Australia
- Faculty of Health Sciences, Australian Catholic University, Melbourne, VIC, Australia
| | - Shiang Y Lim
- Department of Medicine, Surgery and Ophthalmology, University of Melbourne, East Melbourne, VIC, Australia
- O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, Australia
| | - Guei-Sheung Liu
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
- Department of Medicine, Surgery and Ophthalmology, University of Melbourne, East Melbourne, VIC, Australia
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
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9
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Valente T, Ferreira JL, Henriques C, Borges JP, Silva JC. Polymer blending or fiber blending: A comparative study using chitosan and poly(ε-caprolactone) electrospun fibers. J Appl Polym Sci 2018. [DOI: 10.1002/app.47191] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tiago Valente
- Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - José Luís Ferreira
- CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - Célia Henriques
- CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - João Paulo Borges
- CENIMAT/I3N, Faculty of Science and Technology, Materials Science Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - Jorge Carvalho Silva
- CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
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10
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Li W, Hu Y, Shi L, Zhang X, Xiong L, Zhang W, Ullah I. Electrospinning of Polycaprolactone/Pluronic F127 dissolved in glacial acetic acid: fibrous scaffolds fabrication, characterization and in vitro evaluation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:1155-1167. [PMID: 29455624 DOI: 10.1080/09205063.2018.1439431] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Abstracts The Polycaprolactone (PCL) fibrous scaffolds in nano to micro scale have been considered as excellent templates for cell culture and tissue growth. The hydrophobic nature of the PCL, however, yields low initial cell seeding density, heterogeneous cell spreading and slow cell growth rate. Therefore, in this study the surface hydrophilic fibrous scaffolds were directly fabricated by the electrospinning of PCL solutions with small quantities (0.5-5%) of Pluronic F127 (PEO100-PPO65-PEO100) dissolved in benign solvent of glacial acetic acid. The clear and miscible solutions were achieved by controlling the proper F127 content in the blend solutions. The continuous and smooth fibers with average diameters from 0.71 to 1.43 μm made up the fibrous scaffolds in non-woven mode. Then the water wetting angle of the scaffolds could be adjusted from 126° to 0° by varying F127 content owing to its hydrophilic PEO chains presented on surface the blended fibers. Finally, it was demonstrated that the blended fibrous scaffolds with the F127 content less than 1% exhibited better cell attachment, proliferation and spreading performance than those of pure PCL scaffolds.
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Affiliation(s)
- Wenchao Li
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Yiqiang Hu
- b Department of Orthopaedics , Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Lei Shi
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Xianglin Zhang
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Liming Xiong
- b Department of Orthopaedics , Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Wancheng Zhang
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
| | - Ismat Ullah
- a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering , Huazhong University of Science and Technology , Wuhan , P. R. China
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11
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Salmasi S, Nayyer L, Seifalian AM, Blunn GW. Nanohydroxyapatite Effect on the Degradation, Osteoconduction and Mechanical Properties of Polymeric Bone Tissue Engineered Scaffolds. Open Orthop J 2016; 10:900-919. [PMID: 28217213 PMCID: PMC5299581 DOI: 10.2174/1874325001610010900] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 04/12/2016] [Accepted: 05/31/2016] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Statistical reports show that every year around the world approximately 15 million bone fractures occur; of which up to 10% fail to heal completely and hence lead to complications of non-union healing. In the past, autografts or allografts were used as the “gold standard” of treating such defects. However, due to various limitations and risks associated with these sources of bone grafts, other avenues have been extensively investigated through which bone tissue engineering; in particular engineering of synthetic bone graft substitutes, has been recognised as a promising alternative to the traditional methods. METHODS A selective literature search was performed. RESULTS Bone tissue engineering offers unlimited supply, eliminated risk of disease transmission and relatively low cost. It could also lead to patient specific design and manufacture of implants, prosthesis and bone related devices. A potentially promising building block for a suitable scaffold is synthetic nanohydroxyapatite incorporated into synthetic polymers. Incorporation of nanohydroxyapatite into synthetic polymers has shown promising bioactivity, osteoconductivity, mechanical properties and degradation profile compared to other techniques previously considered. CONCLUSION Scientific research, through extensive physiochemical characterisation, in vitro and in vivo assessment has brought together the optimum characteristics of nanohydroxyapatite and various types of synthetic polymers in order to develop nanocomposites of suitable nature for bone tissue engineering. The aim of the present article is to review and update various aspects involved in incorporation of synthetic nanohydroxyapatite into synthetic polymers, in terms of their potentials to promote bone growth and regeneration in vitro, in vivo and consequently in clinical applications.
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Affiliation(s)
- Shima Salmasi
- UCL Division of Surgery and Interventional Science, Centre for Nanotechnology and Regenerative Medicine, University College London, London NW3 2PF, United Kingdom
| | - Leila Nayyer
- UCL Division of Surgery and Interventional Science, Centre for Nanotechnology and Regenerative Medicine, University College London, London NW3 2PF, United Kingdom
| | - Alexander M Seifalian
- UCL Division of Surgery and Interventional Science, Centre for Nanotechnology and Regenerative Medicine, University College London, London NW3 2PF, United Kingdom
| | - Gordon W Blunn
- John Scales Centre for Biomedical Engineering, Institute of Orthopaedics and Musculoskeletal Science, Division of Surgery and Interventional Science, University College London, Royal National Orthopaedic Hospital, Stanmore HA7 4LP, United Kingdom
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Wu Y, Sriram G, Fawzy AS, Fuh JYH, Rosa V, Cao T, Wong YS. Fabrication and evaluation of electrohydrodynamic jet 3D printed polycaprolactone/chitosan cell carriers using human embryonic stem cell-derived fibroblasts. J Biomater Appl 2016; 31:181-92. [DOI: 10.1177/0885328216652537] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biological function of adherent cells depends on the cell–cell and cell–matrix interactions in three-dimensional space. To understand the behavior of cells in 3D environment and their interactions with neighboring cells and matrix requires 3D culture systems. Here, we present a novel 3D cell carrier scaffold that provides an environment for routine 3D cell growth in vitro. We have developed thin, mechanically stable electrohydrodynamic jet (E-jet) 3D printed polycaprolactone and polycaprolactone/Chitosan macroporous scaffolds with precise fiber orientation for basic 3D cell culture application. We have evaluated the application of this technology by growing human embryonic stem cell-derived fibroblasts within these 3D scaffolds. Assessment of cell viability and proliferation of cells seeded on polycaprolactone and polycaprolactone/Chitosan 3D-scaffolds show that the human embryonic stem cell-derived fibroblasts could adhere and proliferate on the scaffolds over time. Further, using confocal microscopy we demonstrate the ability to use fluorescence-labelled cells that could be microscopically monitored in real-time. Hence, these 3D printed polycaprolactone and polycaprolactone/Chitosan scaffolds could be used as a cell carrier for in vitro 3D cell culture-, bioreactor- and tissue engineering-related applications in the future.
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Affiliation(s)
- Yang Wu
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Gopu Sriram
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Amr S Fawzy
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Jerry YH Fuh
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
- National University of Singapore (Suzhou) Research Institute, Suzhou Industrial Park, Suzhou, People's Republic of China
| | - Vinicius Rosa
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
| | - Tong Cao
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore, Singapore
- Tissue Engineering Program, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Yoke San Wong
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
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13
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Chan EC, Kuo SM, Kong AM, Morrison WA, Dusting GJ, Mitchell GM, Lim SY, Liu GS. Three Dimensional Collagen Scaffold Promotes Intrinsic Vascularisation for Tissue Engineering Applications. PLoS One 2016; 11:e0149799. [PMID: 26900837 PMCID: PMC4762944 DOI: 10.1371/journal.pone.0149799] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 02/04/2016] [Indexed: 12/30/2022] Open
Abstract
Here, we describe a porous 3-dimensional collagen scaffold material that supports capillary formation in vitro, and promotes vascularization when implanted in vivo. Collagen scaffolds were synthesized from type I bovine collagen and have a uniform pore size of 80 μm. In vitro, scaffolds seeded with primary human microvascular endothelial cells suspended in human fibrin gel formed CD31 positive capillary-like structures with clear lumens. In vivo, after subcutaneous implantation in mice, cell-free collagen scaffolds were vascularized by host neovessels, whilst a gradual degradation of the scaffold material occurred over 8 weeks. Collagen scaffolds, impregnated with human fibrinogen gel, were implanted subcutaneously inside a chamber enclosing the femoral vessels in rats. Angiogenic sprouts from the femoral vessels invaded throughout the scaffolds and these degraded completely after 4 weeks. Vascular volume of the resulting constructs was greater than the vascular volume of constructs from chambers implanted with fibrinogen gel alone (42.7±5.0 μL in collagen scaffold vs 22.5±2.3 μL in fibrinogen gel alone; p<0.05, n = 7). In the same model, collagen scaffolds seeded with human adipose-derived stem cells (ASCs) produced greater increases in vascular volume than did cell-free collagen scaffolds (42.9±4.0 μL in collagen scaffold with human ASCs vs 25.7±1.9 μL in collagen scaffold alone; p<0.05, n = 4). In summary, these collagen scaffolds are biocompatible and could be used to grow more robust vascularized tissue engineering grafts with improved the survival of implanted cells. Such scaffolds could also be used as an assay model for studies on angiogenesis, 3-dimensional cell culture, and delivery of growth factors and cells in vivo.
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Affiliation(s)
- Elsa C. Chan
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, Victoria, Australia
| | - Shyh-Ming Kuo
- Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan
| | - Anne M. Kong
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, Fitzroy, Victoria, Australia
| | - Wayne A. Morrison
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, Fitzroy, Victoria, Australia
- Department of Surgery, University of Melbourne, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia
- Faculty of Health Sciences, Australian Catholic University, Fitzroy, Victoria, Australia
| | - Gregory J. Dusting
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, Victoria, Australia
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, Fitzroy, Victoria, Australia
| | - Geraldine M. Mitchell
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, Fitzroy, Victoria, Australia
- Department of Surgery, University of Melbourne, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia
- Faculty of Health Sciences, Australian Catholic University, Fitzroy, Victoria, Australia
| | - Shiang Y. Lim
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, Fitzroy, Victoria, Australia
- Department of Surgery, University of Melbourne, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia
- * E-mail: (GSL); (SYL)
| | - Guei-Sheung Liu
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, Victoria, Australia
- * E-mail: (GSL); (SYL)
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Sacchetin PSC, Setti RF, Rosa PDTVE, Moraes ÂM. Properties of PLA/PCL particles as vehicles for oral delivery of the androgen hormone 17α-methyltestosterone. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:870-81. [DOI: 10.1016/j.msec.2015.09.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 08/10/2015] [Accepted: 09/14/2015] [Indexed: 10/23/2022]
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15
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Cornock R, Beirne S, Thompson B, Wallace GG. Coaxial additive manufacture of biomaterial composite scaffolds for tissue engineering. Biofabrication 2014; 6:025002. [PMID: 24658021 DOI: 10.1088/1758-5082/6/2/025002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An inherent difficulty associated with the application of suitable bioscaffolds for tissue engineering is the incorporation of adequate mechanical characteristics into the materials which recapitulate that of the native tissue, whilst maintaining cell proliferation and nutrient transfer qualities. Biomaterial composites fabricated using rapid prototyping techniques can potentially improve the functionality and patient-specific processing of tissue engineering scaffolds. In this work, a technique for the coaxial melt extrusion printing of core-shell scaffold structures was designed, implemented and assessed with respect to the repeatability, cell efficacy and scaffold porosity obtainable. Encapsulated alginate hydrogel/thermoplastic polycaprolactone (Alg-PCL) cofibre scaffolds were fabricated. Selective laser melting was used to produce a high resolution stainless steel 316 L coaxial extrusion nozzle, exhibiting diameters of 300 μm/900 μm for the inner and outer nozzles respectively. We present coaxial melt extrusion printed scaffolds of Alg-PCL cofibres with ~0.4 volume fraction alginate, with total fibre diameter as low as 600 μm and core material offset as low as 10% of the total diameter. Furthermore the tuneability of scaffold porosity, pore size and interconnectivity, as well as the preliminary inclusion, compatibility and survival of an L-929 mouse fibroblast cell-line within the scaffolds were explored. This preliminary cell work highlighted the need for optimal material selection and further design reiteration in future research.
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Affiliation(s)
- R Cornock
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia
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16
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Lan SF, Kehinde T, Zhang X, Khajotia S, Schmidtke DW, Starly B. Controlled release of metronidazole from composite poly-ε-caprolactone/alginate (PCL/alginate) rings for dental implants. Dent Mater 2013; 29:656-65. [DOI: 10.1016/j.dental.2013.03.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/21/2012] [Accepted: 03/11/2013] [Indexed: 11/17/2022]
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17
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Bio-composites composed of a solid free-form fabricated polycaprolactone and alginate-releasing bone morphogenic protein and bone formation peptide for bone tissue regeneration. Bioprocess Biosyst Eng 2013; 36:1725-34. [DOI: 10.1007/s00449-013-0947-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 03/25/2013] [Indexed: 01/31/2023]
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18
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Xiao B, Merlin D. Oral colon-specific therapeutic approaches toward treatment of inflammatory bowel disease. Expert Opin Drug Deliv 2012; 9:1393-407. [PMID: 23036075 DOI: 10.1517/17425247.2012.730517] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Inflammatory bowel disease (IBD) is a chronic relapsing idiopathic disease. In clinical terms, most patients require lifelong medication associated with possible unpleasant adverse effects. Oral colon-specific drug delivery systems are designed to deliver therapeutic drugs to the inflamed colon to target pathophysiological manifestations of IBD. The aim is to maintain the drug with proper concentration in the inflamed colon, to enhance drug residence time and to minimize drug absorption by healthy tissues. AREAS COVERED This review addresses the main barriers for colon-specific drug delivery from organism, tissue and cell levels, respectively. It also summarizes novel colon-specific therapeutic strategies using microparticles and nanoparticles. EXPERT OPINION Oral colon-specific drug delivery represents a possible approach toward efficient treatment of IBD. As the environment of the gastrointestinal tract is harsh and intricate, this approach requires that drug carriers can respond to specific environmental factors of the inflamed colon, permitting stimulus-responsive release of loaded drugs to specific cells or even into specific organelles within cells.
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Affiliation(s)
- Bo Xiao
- Center for Diagnostics and Therapeutics, Department of Biology, Georgia State University, Atlanta, 30302, USA.
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19
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Zhong X, Ji C, Chan AKL, Kazarian SG, Ruys A, Dehghani F. Fabrication of chitosan/poly(ε-caprolactone) composite hydrogels for tissue engineering applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:279-288. [PMID: 21170732 DOI: 10.1007/s10856-010-4194-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 11/19/2010] [Indexed: 05/30/2023]
Abstract
The aim of this study was to fabricate three-dimensional (3D) porous chitosan/poly(ε-caprolactone) (PCL) hydrogels with improved mechanical properties for tissue engineering applications. A modified emulsion lyophilisation technique was developed to produce 3D chitosan/PCL hydrogels. The addition of 25 and 50 wt% of PCL into chitosan substantially enhanced the compressive strength of composite hydrogel 160 and 290%, respectively, compared to pure chitosan hydrogel. The result of ATR-FTIR imaging corroborated that PCL and chitosan were well mixed and physically co-existed in the composite structures. The composite hydrogels were constructed of homogenous structure with average pore size of 59.7 ± 14 μm and finer pores with average size of 4.4 ± 2 μm on the wall of these larger pores. The SEM and confocal laser scanning microscopy images confirmed that fibroblast cells were attached and proliferated on the 3D structure of these composite hydrogels. The composite hydrogels acquired in this study possessed homogeneous porous structure with improved mechanical strength and integrity. They may have a high potential for the production of 3D hydrogels for tissue engineering applications.
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Affiliation(s)
- Xia Zhong
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, Australia
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20
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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.
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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
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