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Tabak T, Kaya K, Isci R, Ozturk T, Yagci Y, Kiskan B. Combining Step-Growth and Chain-Growth Polymerizations in One Pot: Light-Induced Fabrication of Conductive Nanoporous PEDOT-PCL Scaffold. Macromol Rapid Commun 2024; 45:e2300455. [PMID: 37633841 DOI: 10.1002/marc.202300455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/19/2023] [Indexed: 08/28/2023]
Abstract
A novel method based on light-induced fabrication of a poly (3,4-ethylenedioxythiophene)-polycaprolactone (PEDOT-PCL) scaffold using phenacyl bromide (PAB) as a single-component photoinitiator is presented. HBr released from the step-growth polymerization of EDOT is utilized as an in situ catalyst for the chain-growth polymerization of ε-caprolactone. Detailed investigations disclose the formation of a self-assembled nanoporous electroconductive scaffold (1.2 mS cm-1 ). Fluorescence emission spectra of the fabricated scaffold exhibit a mixed solvatochromic behavior, indicating specific interactions between the self-assembled scaffold and solvents with varying polarities, as evidenced by transmission electron microscopy (TEM). Moreover, the same light-induced technique can also be applied for bulk photopolymerization showcasing the versatility and wide-ranging scope of the originated method. In brief, this study introduces a novel approach for light-induced polymerization reactions that is merging step-growth and chain-growth mechanisms. This innovative approach is promising to facilitate in situ polymerization of monomers possessing diverse functionalities.
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Affiliation(s)
- Tugberk Tabak
- Istanbul Technical University, Chemistry Department, Maslak, Istanbul, 34469, Turkey
| | - Kerem Kaya
- Istanbul Technical University, Chemistry Department, Maslak, Istanbul, 34469, Turkey
| | - Recep Isci
- Istanbul Technical University, Chemistry Department, Maslak, Istanbul, 34469, Turkey
| | - Turan Ozturk
- Istanbul Technical University, Chemistry Department, Maslak, Istanbul, 34469, Turkey
- TUBITAK UME, Chemistry Group Laboratories, Kocaeli 54, Gebze, 41470, Turkey
| | - Yusuf Yagci
- Istanbul Technical University, Chemistry Department, Maslak, Istanbul, 34469, Turkey
| | - Baris Kiskan
- Istanbul Technical University, Chemistry Department, Maslak, Istanbul, 34469, Turkey
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Manjit M, Kumar M, Kumar K, Dhondale MR, Jha A, Bharti K, Rain Z, Prakash P, Mishra B. Fabrication of dual drug-loaded polycaprolactone-gelatin composite nanofibers for full thickness diabetic wound healing. Ther Deliv 2023. [PMID: 38124684 DOI: 10.4155/tde-2023-0083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Aim: Design of moxifloxacin and ornidazole co-loaded polycaprolactone and gelatin nanofiber dressing for diabetic wounds. Materials & methods: The composite nanofibers were prepared using electrospinning technique and characterized for in vitro drug release, antibacterial activity, laser doppler and in vivo wound healing. Results: The optimized nanofiber demonstrated an interconnected bead free nanofiber with average diameter <200 nm. The in vitro drug release & antimicrobial studies revealed that optimized nanofiber provided drug release for >120 h, thereby inhibiting growth of Escherichia coli and Stapyhlococcus aureus. An in vivo wound closure study on diabetic rats found that optimized nanofiber group had a significantly higher wound closure rate than marketed formulation. Conclusion: The nanofiber provided prolonged drug release and accelerated wound healing, making it a promising candidate for diabetic wound care.
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Affiliation(s)
- Manjit Manjit
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Manish Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Krishan Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Madhukiran R Dhondale
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Abhishek Jha
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Kanchan Bharti
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Zinnu Rain
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Pradyot Prakash
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi, Uttar Pradesh, 221005, India
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Ye YJ, Xu YF, Hou YB, Yin DC, Su DB, Zhao ZX. Regulation of Tendon Stem Cell Behavior by Designed Nanoporous Topography of Microfibers. Biomacromolecules 2023; 24:5859-5870. [PMID: 38015033 DOI: 10.1021/acs.biomac.3c00896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Nano scale topography scaffold is more bioactive and biomimetic than smooth fiber topographies. Tendon stem cells (TSCs) play important roles in the tendinogenesis of tendon tissue engineering, but the effects and mechanisms of nano topography on TSC behavior are still unclear. This study determined whether the morphology, proliferation, cytoskeleton, and differentiation of TSCs are affected by topography of scaffold in vitro. The porous PA56 scaffolds were prepared with different concentration ratios of glycerol as the molecular template by electrospinning. Its topological characteristics, hydrophilicity, and degradation properties varied with glycerol proportion and movement rate of the receiving plate. Porous fibers promoted the proliferation of TSCs and the number of TSCs varied with topography. Although there was no significant difference due to the small sample size, the number of pseudopodia and cell polarizability still showed differences among different topographies. The morphology of actin cytoskeleton of TSCs showed difference among cultured on porous fibers, smooth fibers, and in culture media with no fiber, suggesting the orientation growth of cells on porous fiber. Moreover, porous fibers promoted teno-lineage differentiation of TSCs by upregulating tendon-specific gene expression. These findings provide evidence that nano porous topography scaffold promotes TSC proliferation, cytoskeleton orientation, and tenogenic differentiation.
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Affiliation(s)
- Ya-Jing Ye
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
| | - Yi-Fan Xu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
| | - Ya-Bo Hou
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
| | - Da-Chuan Yin
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
| | - Dan-Bo Su
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
| | - Zi-Xu Zhao
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
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Injectable 2D flexible hydrogel sheets for optoelectrical/biochemical dual stimulation of neurons. BIOMATERIALS ADVANCES 2023; 146:213284. [PMID: 36682202 DOI: 10.1016/j.bioadv.2023.213284] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 12/15/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
Major challenges in developing implanted neural stimulation devices are the invasiveness, complexity, and cost of the implantation procedure. Here, we report an injectable, nanofibrous 2D flexible hydrogel sheet-based neural stimulation device that can be non-invasively implanted via syringe injection for optoelectrical and biochemical dual stimulation of neuron. Specifically, methacrylated gelatin (GelMA)/alginate hydrogel nanofibers were mechanically reinforced with a poly(lactide-co-ε-caprolactone) (PLCL) core by coaxial electrospinning. The lubricant hydrogel shell enabled not only injectability, but also facile incorporation of functional nanomaterials and bioactives. The nanofibers loaded with photocatatlytic g-C3N4/GO nanoparticles were capable of stimulating neural cells via blue light, with a significant 36.3 % enhancement in neurite extension. Meanwhile, the nerve growth factor (NGF) loaded nanofibers supported a sustained release of NGF with well-maintained function to biochemically stimulate neural differentiation. We have demonstrated the capability of an injectable, hydrogel nanofibrous, neural stimulation system to support neural stimulation both optoelectrically and biochemically, which represents crucial early steps in a larger effort to create a minimally invasive system for neural stimulation.
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Bozkaya O, Arat E, Gün Gök Z, Yiğitoğlu M, Vargel İ. Production and characterization of hybrid nanofiber wound dressing containing Centella asiatica coated silver nanoparticles by mutual electrospinning method. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111023] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Allafchian A, Saeedi S, Jalali SAH. Biocompatibility of electrospun cell culture scaffolds made from balangu seed mucilage/PVA composites. NANOTECHNOLOGY 2021; 33:075302. [PMID: 34757957 DOI: 10.1088/1361-6528/ac3860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
Synthesis of Balangu (Lallemantia royleana) seed mucilage (BSM) solutions combined with polyvinyl alcohol (PVA) was studied for the purpose of producing 3D electrospun cell culture scaffolds. Production of pure BSM nanofibers proved to be difficult, yet integration of PVA contributed to a facile and successful formation of BSM/PVA nanofibers. Different BSM/PVA ratios were fabricated to achieve the desired nanofibrous structure for cell proliferation. It is found that the optimal bead-free ratio of 50/50 with a mean fiber diameter of ≈180 nm presents the most desirable scaffold structure for cell growth. The positive effect of PVA incorporation was approved by analyzing BSM/PVA solutions through physiochemical assays such as electrical conductivity, viscosity and surface tension tests. According to the thermal analysis (TGA/DSC), incorporation of PVA enhanced thermal stability of the samples. Successful fabrication of the nanofibers is verified by FT-IR spectra, where no major chemical interaction between BSM and PVA is detected. The crystallinity of the electrospun nanofibers is investigated by XRD, revealing the nearly amorphous structure of BSM/PVA scaffolds. The MTT assay is employed to verify the biocompatibility of the scaffolds. The cell culture experiment using epithelial Vero cells shows the affinity of the cells to adhere to their nanofibrous substrate and grow to form continuous cell layers after 72 h of incubation.
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Affiliation(s)
- Alireza Allafchian
- Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Iran
- Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Shiva Saeedi
- Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Seyed Amir Hossein Jalali
- Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
- Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran
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Woodley JP, Lambert DW, Asencio IO. Understanding Fibroblast Behavior in 3D Biomaterials. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:569-578. [PMID: 34102862 DOI: 10.1089/ten.teb.2021.0010] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Traditional monolayer culture fails to fully recapitulate the in vivo environment of connective tissue cells such as the fibroblast. When cultured on stiff two-dimensional (2D) plastic, fibroblasts become highly proliferative forming broad lamellipodia and stress fibers. Conversely, in different three-dimensional (3D) culture systems, fibroblasts have displayed a diverse array of features; from an "activated" phenotype like that observed in 2D cultures and by myofibroblasts, to a quiescent state that likely better represents in vivo fibroblasts at rest. Today, a plethora of microfabrication techniques have made 3D culture commonplace, for both tissue engineering purposes and in the study of basic biological interactions. However, establishing the in vivo mimetic credentials of different biomimetic materials is not always straightforward, particularly in the context of fibroblast responses. Fibroblast behavior is governed by the complex interplay of biological features such as integrin binding sites, material mechanical properties that influence cellular mechanotransduction, and microarchitectural features like pore and fiber size, as well as chemical cues. Furthermore, fibroblasts are a heterogeneous group of cells with specific phenotypic traits dependent on their tissue of origin. These features have made understanding the influence of biomaterials on fibroblast behavior a challenging task. In this study, we present a review of the strategies used to investigate fibroblast behavior with a focus on the material properties that influence fibroblast activation, a process that becomes pathological in fibrotic diseases and certain cancers.
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Affiliation(s)
- Joe P Woodley
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Daniel W Lambert
- Integrated Bioscience Group, The School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Ilida Ortega Asencio
- Bioengineering and Health Technologies Group, The School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
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8
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Keshvardoostchokami M, Majidi SS, Huo P, Ramachandran R, Chen M, Liu B. Electrospun Nanofibers of Natural and Synthetic Polymers as Artificial Extracellular Matrix for Tissue Engineering. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 11:E21. [PMID: 33374248 PMCID: PMC7823539 DOI: 10.3390/nano11010021] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 02/06/2023]
Abstract
Many types of polymer nanofibers have been introduced as artificial extracellular matrices. Their controllable properties, such as wettability, surface charge, transparency, elasticity, porosity and surface to volume proportion, have attracted much attention. Moreover, functionalizing polymers with other bioactive components could enable the engineering of microenvironments to host cells for regenerative medical applications. In the current brief review, we focus on the most recently cited electrospun nanofibrous polymeric scaffolds and divide them into five main categories: natural polymer-natural polymer composite, natural polymer-synthetic polymer composite, synthetic polymer-synthetic polymer composite, crosslinked polymers and reinforced polymers with inorganic materials. Then, we focus on their physiochemical, biological and mechanical features and discussed the capability and efficiency of the nanofibrous scaffolds to function as the extracellular matrix to support cellular function.
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Affiliation(s)
- Mina Keshvardoostchokami
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China; (M.K.); (P.H.); (R.R.)
| | - Sara Seidelin Majidi
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark; (S.S.M.); (M.C.)
- Sino-Danish College (SDC), University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peipei Huo
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China; (M.K.); (P.H.); (R.R.)
| | - Rajan Ramachandran
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China; (M.K.); (P.H.); (R.R.)
| | - Menglin Chen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark; (S.S.M.); (M.C.)
- Department of Engineering, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Bo Liu
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China; (M.K.); (P.H.); (R.R.)
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9
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Hosseini FS, Enderami SE, Hadian A, Abazari MF, Ardeshirylajimi A, Saburi E, Soleimanifar F, Nazemisalman B. Efficient osteogenic differentiation of the dental pulp stem cells on β‐glycerophosphate loaded polycaprolactone/polyethylene oxide blend nanofibers. J Cell Physiol 2019; 234:13951-13958. [DOI: 10.1002/jcp.28078] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/07/2018] [Indexed: 12/31/2022]
Affiliation(s)
| | - Seyedeh Elnaz Enderami
- Stem Cell and Regenerative Medicine, Institute of Medical Biotechnology, National Institute of Genetic Engineering & Biotechnology (NIGEB) Tehran Iran
| | - Ali Hadian
- Stem Cell Technology Research Center Tehran Iran
| | - Mohammad Foad Abazari
- Department of Genetics Tehran Medical Science Branch, Islamic Azad University Tehran Iran
| | - Abdolreza Ardeshirylajimi
- Department of Tissue Engineering and Applied Cell Sciences School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Ehsan Saburi
- Clinical Research Development Center, Imam Hasan Hospital, North Khorasan University of Medical Sciences Bojnurd Iran
| | - Fatemeh Soleimanifar
- Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences Karaj Iran
| | - Bahareh Nazemisalman
- Department of Pediatrics Faculty of Dental, Zanjan University of Medical Sciences Zanjan Iran
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10
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Cheng J, Li H, Cao Z, Wu D, Liu C, Pu H. Nanolayer coextrusion: An efficient and environmentally friendly micro/nanofiber fabrication technique. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 95:292-301. [PMID: 30573253 DOI: 10.1016/j.msec.2018.11.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 09/25/2018] [Accepted: 11/06/2018] [Indexed: 12/22/2022]
Abstract
Researchers have developed many types of nanoscale materials with different properties. Among them, nanofibers have recently attracted increasing interest and attention due to their functional versatility and potential applications in diverse industries, including tapes, filtration, energy generation, and biomedical technologies. Nanolayer coextrusion, a novel polymer melt fiber processing technology, has gradually received attention due to its environmental friendliness, efficiency, simplicity and ability to be mass-produced. Compared with conventional techniques, nanolayer coextruded non-woven nanofibrous mats offer advantages such as a tunable fiber diameter, high porosity, high surface area to volume ratio, and the potential to manufacture composite nanofibers with different components to achieve desired structures and properties. Dozens of thermoplastic polymers have been coextruded for various applications, and the variety of polymers has gradually continued to increase. This review presents an overview of the nanolayer coextrusion technique and its promising advantages and potential applications. We discuss nanolayer coextrusion theory and the parameters (polymer and processing) that significantly affect the fiber morphology and properties. We focus on varied applications of nanolayer coextruded fibers in different fields and conclude by describing the future potential of this novel technology.
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Affiliation(s)
- Junfeng Cheng
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Hao Li
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Zheng Cao
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Dun Wu
- National Experimental Demonstration Center for Materials Science and Engineering (Changzhou University), Changzhou 213164, China
| | - Chunlin Liu
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China; Changzhou University Huaide College, Changzhou 213016, China.
| | - Hongting Pu
- Key Laboratory of Advanced Civil Engineering Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, China.
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Remya KR, Chandran S, Mani S, John A, Ramesh P. Hybrid polycaprolactone/polyethylene oxide scaffolds with tunable fiber surface morphology, improved hydrophilicity and biodegradability for bone tissue engineering applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:1444-1462. [PMID: 29656699 DOI: 10.1080/09205063.2018.1465664] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In the present study, we attempt to modify Polycaprolactone (PCL) by blending it with a water soluble polymer Polyethyleneoxide (PEO) having two different molecular weights (Mv ~1,00,000 and 6,00,000) using electrospinning technique. The effect of PEO molecular weight and blend ratio on fiber morphology, porosity, surface wettability, static and dynamic mechanical properties of PCL was investigated. In vitro degradation studies in phosphate buffer saline (PBS) at 37 °C demonstrated formation of pores on fiber surface especially in blend scaffolds with 50:50 ratios. In vitro studies using human osteoblast sarcoma (hOS) cell lines on blend scaffolds showed improved cellular response with good cell adhesion, viability and proliferation. The study revealed that incorporation of PEO on PCL scaffolds complemented the properties of PCL and facilitated fabrication of scaffolds with improved hydrophilicity, mechanical property and tunable degradation profile with better cell viability which makes it an ideal candidate for bone tissue engineering applications.
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Affiliation(s)
- K R Remya
- a Division of Polymeric Medical Devices, Department of Medical Devices Engineering, Biomedical Technology Wing , Sree Chitra Tirunal Institute for Medical Sciences and Technology , Thiruvananthapuram , India
| | - Sunitha Chandran
- b TEM Laboratory, Department of Biomaterial Science and Technology, Biomedical Technology Wing , Sree Chitra Tirunal Institute for Medical Sciences and Technology , Thiruvananthapuram , India
| | - Susan Mani
- b TEM Laboratory, Department of Biomaterial Science and Technology, Biomedical Technology Wing , Sree Chitra Tirunal Institute for Medical Sciences and Technology , Thiruvananthapuram , India
| | - Annie John
- b TEM Laboratory, Department of Biomaterial Science and Technology, Biomedical Technology Wing , Sree Chitra Tirunal Institute for Medical Sciences and Technology , Thiruvananthapuram , India
| | - P Ramesh
- a Division of Polymeric Medical Devices, Department of Medical Devices Engineering, Biomedical Technology Wing , Sree Chitra Tirunal Institute for Medical Sciences and Technology , Thiruvananthapuram , India
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12
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Strategic Design and Fabrication of Biomimetic 3D Scaffolds: Unique Architectures of Extracellular Matrices for Enhanced Adipogenesis and Soft Tissue Reconstruction. Sci Rep 2018; 8:5696. [PMID: 29632328 PMCID: PMC5890269 DOI: 10.1038/s41598-018-23966-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 03/23/2018] [Indexed: 01/16/2023] Open
Abstract
The higher rate of soft tissue impairment due to lumpectomy or other trauma greatly requires the restoration of the irreversibly lost subcutaneous adipose tissues. The nanofibers fabricated by conventional electrospinning provide only a superficial porous structure due to its sheet like 2D structure and thereby hinder the cell infiltration and differentiation throughout the scaffolds. Thus we developed a novel electrospun 3D membrane using the zwitterionic poly (carboxybetaine-co-methyl methacrylate) co-polymer (CMMA) through electrostatic repulsion based electrospinning for soft tissue engineering. The inherent charges in the CMMA will aid the nanofiber to directly transform into a semiconductor and thereby transfer the immense static electricity from the grounded collector and will impart greater fluffiness to the scaffolds. The results suggest that the fabricated 3D nanofiber (CMMA 3NF) scaffolds possess nanofibers with larger inter connected pores and less dense structure compared to the conventional 2D scaffolds. The CMMA 3NF exhibits significant cues of soft tissue engineering such as enhanced biocompatibility as well as the faster regeneration of cells. Moreover the fabricated 3D scaffolds greatly assist the cells to develop into its stereoscopic topographies with an enhanced adipogenic property.
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Heterogeneous electrospun polycaprolactone/polyethylene glycol membranes with improved wettability, biocompatibility, and mineralization. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.01.054] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Sardella E, Salama RA, Waly GH, Habib AN, Favia P, Gristina R. Improving Internal Cell Colonization of Porous Scaffolds with Chemical Gradients Produced by Plasma Assisted Approaches. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4966-4975. [PMID: 28094986 DOI: 10.1021/acsami.6b14170] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cell colonization of the surrounding environment is a very significant process in both physiological and pathological events. In order to understand the tissue regeneration process and thereby provide guidance principles for designing new biomaterials, it is of paramount importance to study the cell colonization in the presence of physical, chemical, and biological cues. Flat "gradient" materials are generally used with this purpose. Three dimensional gradient scaffolds mimicking more precisely the situation in vivo are somewhat more complex to fabricate and characterize. Scaffolds for Tissue Engineering (TE) made of hydrophobic synthetic polymers do not allow good cell colonization: far from their periphery, in fact, internal cell colonization is usually low. In this research poly-ε caprolactone (PCL) scaffolds have been "decorated" with chemical gradients both on top and along their thickness by means of cold plasma processes, in order to improve cell colonization of their core. Plasma treatments with a mixture of argon and oxygen (Ar/O2), as well as plasma deposition of differently cross-linked poly(ethylene oxide) (PEO)-like coatings, have been performed. This study establishes that cross-linked PEO-like domains interspaced with native PCL ones deposited only on top of the scaffold (i.e., coating that penetrates less than 300 μm inside the scaffold) are more effective in promoting cell colonization across the scaffolds than the other tested materials including superhydrophilic samples and that ones produced by tested double step approaches. Last but not least, one result of this research is that, in the case of plasma coatings with low deposition rates and porous materials with a low pore interconnectivity, it is possible to improve penetration of low pressure plasma active species inside the scaffold's core thorough a pretreatment of the porous materials (i.e., penetration up to 4500 mm far from topside).
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Affiliation(s)
- Eloisa Sardella
- Institute of Nanotechnology-CNR (CNR Nanotec) , via Orabona 4, 70126 Bari, Italy
| | - Rania A Salama
- Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University , 12 Saraya AlManial Street, Kasr AlEiny, Cairo 11553, Egypt
| | - Gihan H Waly
- Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University , 12 Saraya AlManial Street, Kasr AlEiny, Cairo 11553, Egypt
| | - A Nour Habib
- Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University , 12 Saraya AlManial Street, Kasr AlEiny, Cairo 11553, Egypt
| | - Pietro Favia
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro" , via Orabona 4, 70124, Bari, Italy
| | - Roberto Gristina
- Institute of Nanotechnology-CNR (CNR Nanotec) , via Orabona 4, 70126 Bari, Italy
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Jordan AM, Viswanath V, Kim SE, Pokorski JK, Korley LTJ. Processing and surface modification of polymer nanofibers for biological scaffolds: a review. J Mater Chem B 2016; 4:5958-5974. [PMID: 32263485 DOI: 10.1039/c6tb01303a] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polymeric fibrous constructs possess high surface area-to-volume ratios when compared with solid substrates and are quite commonly used as tissue engineering and cell growth scaffolds. An overview of important design and material considerations for fibrous scaffolds as well as an outline of both established and emerging solution- and melt-based fabrication techniques is provided. Innovative post-process surface modification avenues using "click" chemistry with both single and dual active cues as well as gradient cues, which maintain the fibrous structure are described. By combining process parameters with post-process surface modification, researchers have been able to selectively tune cellular response after seeding and culturing on fibrous constructs.
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Affiliation(s)
- Alex M Jordan
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA.
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Mallone A, Weber B, Hoerstrup SP. Cardiovascular Regenerative Technologies: Update and Future Outlook. Transfus Med Hemother 2016; 43:291-296. [PMID: 27721705 DOI: 10.1159/000447749] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 06/21/2016] [Indexed: 12/20/2022] Open
Abstract
In the effort of improving treatment for cardiovascular disease (CVD), scientists struggle with the lack of the regenerative capacities of finally differentiated cardiovascular tissues. In this context, the advancements in regenerative medicine contributed to the development of cell-based therapies as well as macro- and micro-scale tissue-engineering technologies. The current experimental approaches focus on different regenerative strategies including a broad spectrum of techniques such as paracrine-based stimulation of autologous cardiac stem cells, mesenchymal cell injections, 3D microtissue culture techniques and vascular tissue-engineering methods. These potential next-generation strategies are leading the way to a revolution in addressing CVD, and numerous studies are now undertaken to assess their therapeutic value. With this review, we provide an update on the current research directions, on their major challenges, limitations, and achievements.
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Affiliation(s)
- Anna Mallone
- Institute for Regenerative Medicine, University of Zurich, Schlieren, Switzerland
| | - Benedikt Weber
- Institute for Regenerative Medicine, University of Zurich, Schlieren, Switzerland
| | - Simon P Hoerstrup
- Institute for Regenerative Medicine, University of Zurich, Schlieren, Switzerland
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Baranowska-Korczyc A, Warowicka A, Jasiurkowska-Delaporte M, Grześkowiak B, Jarek M, Maciejewska BM, Jurga-Stopa J, Jurga S. Antimicrobial electrospun poly(ε-caprolactone) scaffolds for gingival fibroblast growth. RSC Adv 2016. [DOI: 10.1039/c6ra02486f] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study discusses the value of polymer electrospun materials in three-dimensional (3D) scaffolds and antibacterial wound dressings for potential dental applications.
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Affiliation(s)
| | - Alicja Warowicka
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
| | | | | | - Marcin Jarek
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
| | - Barbara M. Maciejewska
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
- Department of Macromolecular Physics
| | - Justyna Jurga-Stopa
- Department of Biomaterials and Experimental Dentistry
- Poznań University of Medical Sciences
- PL-61701 Poznań
- Poland
| | - Stefan Jurga
- NanoBioMedical Centre
- Adam Mickiewicz University
- PL-61614 Poznań
- Poland
- Department of Macromolecular Physics
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Nam J, Huang Y, Agarwal S, Lannutti J. Improved cellular infiltration in electrospun fiber via engineered porosity. TISSUE ENGINEERING 2007; 13:2249-57. [PMID: 17536926 PMCID: PMC4948987 DOI: 10.1089/ten.2006.0306] [Citation(s) in RCA: 329] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Small pore sizes inherent to electrospun matrices can hinder efficient cellular ingrowth. To facilitate infiltration while retaining its extracellular matrix-like character, electrospinning was combined with salt leaching to produce a scaffold having deliberate, engineered delaminations. We made elegant use of a specific randomizing component of the electrospinning process, the Taylor Cone and the falling fiber beneath it, to produce a uniform, well-spread distribution of salt particles. After 3 weeks of culture, up to 4 mm of cellular infiltration was observed, along with cellular coverage of up to 70% within the delaminations. To our knowledge, this represents the first observation of extensive cellular infiltration of electrospun matrices. Infiltration appears to be driven primarily by localized proliferation rather than coordinated cellular locomotion. Cells also moved from the salt-generated porosity into the surrounding electrospun fiber matrix. Given that the details of salt deposition (amount, size, and number density) are far from optimized, the result provides a convincing illustration of the ability of mammalian cells to interact with appropriately tailored electrospun matrices. These layered structures can be precisely fabricated by varying the deposition interval and particle size conceivably to produce in vivo-like gradients in porosity such that the resulting scaffolds better resemble the desired final structure.
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Affiliation(s)
- Jin Nam
- Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, USA
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