1
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Walsh T, Hadisi Z, Dabiri SMH, Hasanpour S, Samimi S, Azimzadeh M, Akbari M. Facile roll-to-roll production of nanoporous fiber coatings for advanced wound care sutures. NANOSCALE 2024; 16:15615-15628. [PMID: 39110148 DOI: 10.1039/d4nr01432d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Theranostic sutures are derived from innovative ideas to enhance wound healing results by adding wound diagnostics and therapeutics to typical sutures by functionalizing them with additional materials. Here, we present a new direct electrospinning method for the fast, continuous, inexpensive, and high-throughput production of versatile nanofibrous-coated suture threads, with precise control over various essential microstructural and physical characteristics. The thickness of the coating layer and the alignment of nanofibers with the thread's direction can be adjusted by the user by varying the spooling speed and the displacement between the spinneret needle and thread. To show the flexibility of our method for a range of different materials selected, gelatin, polycaprolactone, silk fibroin, and PEDOT:PSS (poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)) were the resultant nanofibers characterized by scanning electron microscopy (SEM) imaging and conductivity tests. In a series of in vitro and ex vivo tests (pig skin), sutures were successfully tested for their flexibility and mechanical properties when used as weaving and knotting sutures, and their biocompatibility with a keratinocyte cell line. For temperature-based drug-releasing tests, two fluorescent molecules as drug models with high and low molecular weight, namely fluorescein isothiocyanate-dextran (20 kDa) and rhodamine B (470 Da), were used, and their steady release with incremental increase of temperature to 37 °C over 120 min was seen, which is appropriate for bacterial treatment drugs. Given the advantages of the presented technique, it seems to have promising potential to be used in future medical applications for wound closure and bacterial infection treatment via a temperature-triggered drug release strategy.
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Affiliation(s)
- Tavia Walsh
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Zhina Hadisi
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Seyed Mohammad Hossein Dabiri
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Sadegh Hasanpour
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Sadaf Samimi
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Mostafa Azimzadeh
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
| | - Mohsen Akbari
- Laboratory for Innovations in Microengineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada.
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC V8W 2Y2, Canada
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2
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Shin MJ, Im SH, Kim B, Choi J, Lucia SE, Kim W, Park JG, Kim P, Chung HJ, Yoon DK. Fabrication of Scratched Nanogrooves for Highly Oriented Cell Alignment and Application as a Wound Healing Dressing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18653-18662. [PMID: 37014981 DOI: 10.1021/acsami.3c00530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Using improper wound care materials may cause impaired wound healing, which can involve scar formation and infection. Herein, we propose a facile method to fabricate a cell-alignment scaffold, which can effectively enhance cell growth and migration, leading to the reproduction of cellular arrangements and restoration of tissues. The principle is scratching a diamond lapping film that gives uniaxial nanotopography on substrates. Cells are seeded to follow the geometric cue via contact guidance, resulting in highly oriented cell alignment. Remarkable biocompatibility is also demonstrated by the high cell viability on various substrates. In vivo studies in a wound healing model in mice show that the scratched film supports directed cell guidance on the nanostructure, with significantly reduced wound areas and inhibition of excessive collagen deposition. Rapid recovery of the epidermis and dermis is also shown by histological analyses, suggesting the potential application of the scratching technique as an advanced wound dressing material for effective tissue regeneration.
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Affiliation(s)
- Min Jeong Shin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - San Hae Im
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Baekman Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jieun Choi
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Stephani Edwina Lucia
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Wantae Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jesse G Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Pilhan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- KI for Health Science and Technology (KIHST), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hyun Jung Chung
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Dong Ki Yoon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- KAIST Institute for Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 Republic of Korea
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3
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Dos Santos AEA, Cotta T, Santos JPF, Camargos JSF, do Carmo ACC, Alcântara EGA, Fleck C, Copola AGL, Nogueira JM, Silva GAB, Andrade LDO, Ferreira RV, Jorge EC. Bioactive cellulose acetate nanofiber loaded with annatto support skeletal muscle cell attachment and proliferation. Front Bioeng Biotechnol 2023; 11:1116917. [PMID: 36911186 PMCID: PMC9995891 DOI: 10.3389/fbioe.2023.1116917] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 02/14/2023] [Indexed: 02/25/2023] Open
Abstract
Electrospinning emerged as a promising technique to produce scaffolds for cultivated meat in function of its simplicity, versatility, cost-effectiveness, and scalability. Cellulose acetate (CA) is a biocompatible and low-cost material that support cell adhesion and proliferation. Here we investigated CA nanofibers, associated or not with a bioactive annatto extract (CA@A), a food-dye, as potential scaffolds for cultivated meat and muscle tissue engineering. The obtained CA nanofibers were evaluated concerning its physicochemical, morphological, mechanical and biological traits. UV-vis spectroscopy and contact angle measurements confirmed the annatto extract incorporation into the CA nanofibers and the surface wettability of both scaffolds, respectively. SEM images revealed that the scaffolds are porous, containing fibers with no specific alignment. Compared with the pure CA nanofibers, CA@A nanofibers showed increased fiber diameter (420 ± 212 nm vs. 284 ± 130 nm). Mechanical properties revealed that the annatto extract induces a reduction of the stiffness of the scaffold. Molecular analyses revealed that while CA scaffold favored C2C12 myoblast differentiation, the annatto-loaded CA scaffold favored a proliferative state of these cells. These results suggest that the combination of cellulose acetate fibers loaded with annatto extract may be an interesting economical alternative for support long-term muscle cells culture with potential application as scaffold for cultivated meat and muscle tissue engineering.
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Affiliation(s)
- Ana Elisa Antunes Dos Santos
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tiago Cotta
- Departamento de Engenharia de Materiais, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, Brazil
| | - João Paulo Ferreira Santos
- Departamento de Engenharia de Materiais, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, Brazil
| | - Juliana Sofia Fonseca Camargos
- Departamento de Engenharia de Materiais, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, Brazil
| | - Ana Carolina Correia do Carmo
- Departamento de Engenharia de Materiais, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, Brazil
| | | | - Claudia Fleck
- Technische Universität Berlin, Chair of Materials Science and Engineering, Berlin, Germany
| | - Aline Gonçalves Lio Copola
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Júlia Meireles Nogueira
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gerluza Aparecida Borges Silva
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Luciana de Oliveira Andrade
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberta Viana Ferreira
- Departamento de Engenharia de Materiais, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, Brazil
| | - Erika Cristina Jorge
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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4
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Singh A, Kumar V, Singh SK, Gupta J, Kumar M, Sarma DK, Verma V. Recent advances in bioengineered scaffold for in vitro meat production. Cell Tissue Res 2023; 391:235-247. [PMID: 36526810 PMCID: PMC9758038 DOI: 10.1007/s00441-022-03718-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022]
Abstract
In vitro meat production via stem cell technology and tissue engineering provides hypothetically elevated resource efficiency which involves the differentiation of muscle cells from pluripotent stem cells. By applying the tissue engineering technique, muscle cells are cultivated and grown onto a scaffold, resulting in the development of muscle tissue. The studies related to in vitro meat production are advancing with a seamless pace, and scientists are trying to develop various approaches to mimic the natural meat. The formulation and fabrication of biodegradable and cost-effective edible scaffold is the key to the successful development of downstream culture and meat production. Non-mammalian biopolymers such as gelatin and alginate or plant-derived proteins namely soy protein and decellularized leaves have been suggested as potential scaffold materials for in vitro meat production. Thus, this article is aimed to furnish recent updates on bioengineered scaffolds, covering their formulation, fabrication, features, and the mode of utilization.
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Affiliation(s)
- Anshuman Singh
- grid.263138.d0000 0000 9346 7267Stem Cell Research Centre, Department of Hematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014 (U.P.) India
| | - Vinod Kumar
- grid.263138.d0000 0000 9346 7267Stem Cell Research Centre, Department of Hematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014 (U.P.) India
| | - Suraj Kumar Singh
- grid.263138.d0000 0000 9346 7267Stem Cell Research Centre, Department of Hematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014 (U.P.) India
| | - Jalaj Gupta
- grid.263138.d0000 0000 9346 7267Stem Cell Research Centre, Department of Hematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014 (U.P.) India
| | - Manoj Kumar
- ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | | | - Vinod Verma
- grid.263138.d0000 0000 9346 7267Stem Cell Research Centre, Department of Hematology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014 (U.P.) India
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5
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Tran TS, Balu R, Mettu S, Roy Choudhury N, Dutta NK. 4D Printing of Hydrogels: Innovation in Material Design and Emerging Smart Systems for Drug Delivery. Pharmaceuticals (Basel) 2022; 15:1282. [PMID: 36297394 PMCID: PMC9609121 DOI: 10.3390/ph15101282] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 11/23/2022] Open
Abstract
Advancements in the material design of smart hydrogels have transformed the way therapeutic agents are encapsulated and released in biological environments. On the other hand, the expeditious development of 3D printing technologies has revolutionized the fabrication of hydrogel systems for biomedical applications. By combining these two aspects, 4D printing (i.e., 3D printing of smart hydrogels) has emerged as a new promising platform for the development of novel controlled drug delivery systems that can adapt and mimic natural physio-mechanical changes over time. This allows printed objects to transform from static to dynamic in response to various physiological and chemical interactions, meeting the needs of the healthcare industry. In this review, we provide an overview of innovation in material design for smart hydrogel systems, current technical approaches toward 4D printing, and emerging 4D printed novel structures for drug delivery applications. Finally, we discuss the existing challenges in 4D printing hydrogels for drug delivery and their prospects.
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Affiliation(s)
| | | | | | | | - Naba Kumar Dutta
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
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6
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Gautam B, Huang MR, Ali SA, Yan AL, Yu HH, Chen JT. Smart Thermoresponsive Electrospun Nanofibers with On-Demand Release of Carbon Quantum Dots for Cellular Uptake. ACS APPLIED MATERIALS & INTERFACES 2022; 14:40322-40330. [PMID: 35994422 DOI: 10.1021/acsami.2c10810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Developing a smart responsive surface for on-demand delivery of organic, inorganic, and biological cargo in vitro cellular uptake is always in constant demand. Herein, we present carbon quantum dot (CQD)-loaded (poly(N-isopropylacrylamide) (PNIPAAm)/poly(methyl methacrylate (PMMA)) blend nanofiber sheets having a thermoresponsive nature. As a model cargo, fluorescent CQDs are used for the demonstration of the on-demand delivery mechanism. In addition, a thermoresponsive nature is produced by the PNIPAAm polymer in the nanofiber matrix while the PMMA polymer provides extra stability and firmness to the nanofibers against the sudden dissolution of the nanofibers in aqueous media. The synthesis of CQDs and their loading into a blend nanofiber matrix are confirmed using fluorescence spectrophotometry, transmission electron microscopy, and fluorescence microscopy. The morphologies and diameters of the nanofibers are analyzed by scanning electron microscopy. Burst effect analysis proves that 30% (w/w) PNIPAAm-containing nanofibers possess the highest stability with the least dissolution in aqueous media. Thermoresponsiveness of the nanofibers is further confirmed through water contact angle measurements. Quantitative fluorescence results show that more than 80% of loaded CQDs can be released upon thermal stimulation. The fluorescence micrographs reveal that the blend nanofiber sheets can effectively improve the cellular uptake of CQDs by simply increasing the local concentrations via applying thermal stimulation as the released mechanism.
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Affiliation(s)
- Bhaskarchand Gautam
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Meng-Ru Huang
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Syed Atif Ali
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Smart Organic Material Laboratory, Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST), Academia Sinica, Taipei 115, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Ai-Ling Yan
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Hsiao-Hua Yu
- Smart Organic Material Laboratory, Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
- Taiwan International Graduate Program (TIGP), Sustainable Chemical Science and Technology (SCST), Academia Sinica, Taipei 115, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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7
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De Pieri A, Korntner SH, Capella-Monsonis H, Tsiapalis D, Kostjuk SV, Churbanov S, Timashev P, Gorelov A, Rochev Y, Zeugolis DI. Macromolecular crowding transforms regenerative medicine by enabling the accelerated development of functional and truly three-dimensional cell assembled micro tissues. Biomaterials 2022; 287:121674. [PMID: 35835003 DOI: 10.1016/j.biomaterials.2022.121674] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 07/03/2022] [Accepted: 07/06/2022] [Indexed: 11/22/2022]
Abstract
Scaffold-free in vitro organogenesis exploits the innate ability of cells to synthesise and deposit their own extracellular matrix to fabricate tissue-like assemblies. Unfortunately, cell-assembled tissue engineered concepts require prolonged ex vivo culture periods of very high cell numbers for the development of a borderline three-dimensional implantable device, which are associated with phenotypic drift and high manufacturing costs, thus, hindering their clinical translation and commercialisation. Herein, we report the accelerated (10 days) development of a truly three-dimensional (338.1 ± 42.9 μm) scaffold-free tissue equivalent that promotes fast wound healing and induces formation of neotissue composed of mature collagen fibres, using human adipose derived stem cells seeded at only 50,000 cells/cm2 on an poly (N-isopropylacrylamide-co-N-tert-butylacrylamide (PNIPAM86-NTBA14) temperature-responsive electrospun scaffold and grown under macromolecular crowding conditions (50 μg/ml carrageenan). Our data pave the path for a new era in scaffold-free regenerative medicine.
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Affiliation(s)
- Andrea De Pieri
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Proxy Biomedical Ltd., Spiddal, Galway, Ireland
| | - Stefanie H Korntner
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Hector Capella-Monsonis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Dimitrios Tsiapalis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Sergei V Kostjuk
- Department of Chemistry, Belarusian State University and Research Institute for Physical Chemical Problems of the Belarusian State University, Minsk, Belarus; Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Semyon Churbanov
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Alexander Gorelov
- School of Chemistry & Chemical Biology, University College Dublin, Dublin, Ireland
| | - Yuri Rochev
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Dimitrios I Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland; Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Charles Institute of Dermatology, Conway Institute of Biomolecular & Biomedical Research and School of Mechanical & Materials Engineering, University College Dublin (UCD), Dublin, Ireland.
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8
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Yao M, Xu W, Meng Y, Chen S, Lu Q. Natural Tissue-Imprinted Biointerface for the Topographical Education of a Biomimetic Cell Sheet. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7921-7928. [PMID: 35732510 DOI: 10.1021/acs.langmuir.2c00439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Cell sheet engineering as a cell-based scaffold-free therapy is promising in tissue engineering, allowing precise transforming treatments for various tissue damage. However, the current cutting-edge techniques are still hampered by the difficulty in mimicking the natural tissue organizations and the corresponding physiological functions. In this work, cell-imprinting technology using the natural tissue as a template was proposed to rationally educate the cellular alignment in the cell sheet. Through this technique, we obtained temporary templates with morphological structure complementary to native tissues and then directly transferred the structure on the template to the collagen layer on a photothermally convertible substrate by secondary imprinting replication. The resultant biomimetic interface was used for cell culture and release to obtain a cell sheet with a texture similar to the natural tissue morphology. Different from conventional photolithography, the natural tissue-imprinted biointerface guides the geometry of cell sheets in the way of natural principles instead of stereotyped or overuniform cell organization. Simultaneously, a near-infrared laser (NIR) was used to irradiate the photothermally responsive substrate to obtain complete cell sheets efficiently and nondestructively. The natural tissue-educated myocardium cell sheets exhibited good physiological activity and biomimetic biofunctions, such as mechanical properties and physiological performances. This approach might open an inspiring prospect in regenerative medicine and offer a new approach to realizing the biomimetic tissue construction.
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Affiliation(s)
| | - Wei Xu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 China
| | | | - Shuangshuang Chen
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444 China
| | - Qinghua Lu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, the State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 China
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9
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Drewry M, Dailey MT, Rothermund K, Backman C, Dahl KN, Syed-Picard FN. Promoting and Orienting Axon Extension Using Scaffold-Free Dental Pulp Stem Cell Sheets. ACS Biomater Sci Eng 2022; 8:814-825. [PMID: 34982537 PMCID: PMC9821555 DOI: 10.1021/acsbiomaterials.1c01517] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Current treatments of facial nerve injury result in poor functional outcomes due to slow and inefficient axon regeneration and aberrant reinnervation. To address these clinical challenges, bioactive scaffold-free cell sheets were engineered using neurotrophic dental pulp stem/progenitor cells (DPCs) and their aligned extracellular matrix (ECM). DPCs endogenously supply high levels of neurotrophic factors (NTFs), growth factors capable of stimulating axonal regeneration, and an aligned ECM provides guidance cues to direct axon extension. Human DPCs were grown on a substrate comprising parallel microgrooves, inducing the cells to align and deposit a linearly aligned, collagenous ECM. The resulting cell sheets were robust and could be easily removed from the underlying substrate. DPC sheets produced NTFs at levels previously shown capable of promoting axon regeneration, and, moreover, inducing DPC alignment increased the expression of select NTFs relative to unaligned controls. Furthermore, the aligned DPC sheets were able to stimulate functional neuritogenic effects in neuron-like cells in vitro. Neuronally differentiated neuroblastoma SH-SY5Y cells produced neurites that were significantly more oriented and less branched when cultured on aligned cell sheets relative to unaligned sheets. These data demonstrate that the linearly aligned DPC sheets can biomechanically support axon regeneration and improve axonal guidance which, when applied to a facial nerve injury, will result in more accurate reinnervation. The aligned DPC sheets generated here could be used in combination with commercially available nerve conduits to enhance their bioactivity or be formed into stand-alone scaffold-free nerve conduits capable of facilitating improved facial nerve recovery.
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Affiliation(s)
- Michelle
D. Drewry
- Department
of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew T. Dailey
- Department
of Oral and Maxillofacial Surgery, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Kristi Rothermund
- Department
of Oral Biology and Center for Craniofacial Regeneration, School of
Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Charles Backman
- Department
of Chemical Engineering, College of Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Kris N. Dahl
- Department
of Chemical Engineering, College of Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,Department
of Biomedical Engineering, College of Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States,McGowan
Institute for Regenerative Medicine, Pittsburgh, Pennsylvania 15219, United States,Forensics, Thornton Tomasetti, New York, New York 10271, United States
| | - Fatima N. Syed-Picard
- Department
of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States,Department
of Oral Biology and Center for Craniofacial Regeneration, School of
Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States,McGowan
Institute for Regenerative Medicine, Pittsburgh, Pennsylvania 15219, United States,. Phone: 412-648-8824
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10
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Bomkamp C, Skaalure SC, Fernando GF, Ben‐Arye T, Swartz EW, Specht EA. Scaffolding Biomaterials for 3D Cultivated Meat: Prospects and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102908. [PMID: 34786874 PMCID: PMC8787436 DOI: 10.1002/advs.202102908] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/12/2021] [Indexed: 05/03/2023]
Abstract
Cultivating meat from stem cells rather than by raising animals is a promising solution to concerns about the negative externalities of meat production. For cultivated meat to fully mimic conventional meat's organoleptic and nutritional properties, innovations in scaffolding technology are required. Many scaffolding technologies are already developed for use in biomedical tissue engineering. However, cultivated meat production comes with a unique set of constraints related to the scale and cost of production as well as the necessary attributes of the final product, such as texture and food safety. This review discusses the properties of vertebrate skeletal muscle that will need to be replicated in a successful product and the current state of scaffolding innovation within the cultivated meat industry, highlighting promising scaffold materials and techniques that can be applied to cultivated meat development. Recommendations are provided for future research into scaffolds capable of supporting the growth of high-quality meat while minimizing production costs. Although the development of appropriate scaffolds for cultivated meat is challenging, it is also tractable and provides novel opportunities to customize meat properties.
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Affiliation(s)
- Claire Bomkamp
- The Good Food Institute1380 Monroe St. NW #229WashingtonDC20010USA
| | | | | | - Tom Ben‐Arye
- The Good Food Institute1380 Monroe St. NW #229WashingtonDC20010USA
| | - Elliot W. Swartz
- The Good Food Institute1380 Monroe St. NW #229WashingtonDC20010USA
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11
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Wang BX, Li J, Cheng DH, Lu YH, Liu L. Fabrication of Antheraea pernyi Silk Fibroin-Based Thermoresponsive Hydrogel Nanofibers for Colon Cancer Cell Culture. Polymers (Basel) 2021; 14:108. [PMID: 35012130 PMCID: PMC8747543 DOI: 10.3390/polym14010108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 12/23/2021] [Accepted: 12/25/2021] [Indexed: 11/17/2022] Open
Abstract
Antheraea pernyi silk fibroin (ASF)-based nanofibers have wide potential for biomaterial applications due to superior biocompatibility. It is not clear whether the ASF-based nanofibers scaffold can be used as an in vitro cancer cell culture platform. In the current study, we fabricated novel ASF-based thermoresponsive hydrogel nanofibers by aqueous electrospinning for colon cancer (LoVo) cells culture. ASF was reacted with allyl glycidyl ether (AGE) for the preparation of allyl silk fibroin (ASF-AGE), which provided the possibility of copolymerization with allyl monomer. The investigation of ASF-AGE structure by 1H NMR revealed that reactive allyl groups were successfully linked with ASF. ASF-based thermoresponsive hydrogel nanofibers (p (ASF-AGE-NIPAAm)) were successfully manufactured by aqueous electrospinning with the polymerization of ASF and N-isopropylacrylamide (NIPAAm). The p (ASF-AGE-NIPAAm) spinning solution showed good spinnability with the increase of polymerization time, and uniform nanofibers were formed at the polymerization time of 360 min. The obtained hydrogel nanofibers exhibited good thermoresponsive that the LCST was similar with PNIPAAm at about 32 °C, and good degradability in protease XIV PBS solution. In addition, the cytocompatibility of colon cancer (LoVo) cells cultured in hydrogel nanofibers was assessed. It was demonstrated that LoVo cells grown on hydrogel nanofibers showed improved cell adhesion, proliferation, and viability than those on hydrogel. The results suggest that the p (ASF-AGE-NIPAAm) hydrogel nanofibers have potential application in LoVo cells culture in vitro. This study demonstrates the feasibility of fabricating ASF-based nanofibers to culture LoVo cancer cells that can potentially be used as an in vitro cancer cell culture platform.
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Affiliation(s)
- Bo-Xiang Wang
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
- Liaoning Provincial Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China; (J.L.); (D.-H.C.)
- School of Chemical Engineering, Eastern Liaoning University, Dandong 118003, China
| | - Jia Li
- Liaoning Provincial Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China; (J.L.); (D.-H.C.)
- School of Chemical Engineering, Eastern Liaoning University, Dandong 118003, China
| | - De-Hong Cheng
- Liaoning Provincial Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China; (J.L.); (D.-H.C.)
- School of Chemical Engineering, Eastern Liaoning University, Dandong 118003, China
| | - Yan-Hua Lu
- Liaoning Provincial Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China; (J.L.); (D.-H.C.)
- School of Chemical Engineering, Eastern Liaoning University, Dandong 118003, China
| | - Li Liu
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
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12
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Liguori A, Pandini S, Rinoldi C, Zaccheroni N, Pierini F, Focarete ML, Gualandi C. Thermo-active Smart Electrospun Nanofibers. Macromol Rapid Commun 2021; 43:e2100694. [PMID: 34962002 DOI: 10.1002/marc.202100694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/15/2021] [Indexed: 11/10/2022]
Abstract
The recent burst of research on smart materials is a clear evidence of the growing interest of the scientific community, industry, and society in the field. The exploitation of the great potential of stimuli-responsive materials for sensing, actuation, logic, and control applications is favored and supported by new manufacturing technologies, such as electrospinning, that allows to endow smart materials with micro- and nano-structuration, thus opening up additional and unprecedented prospects. In this wide and lively scenario, this article systematically reviews the current advances in the development of thermo-active electrospun fibers and textiles, sorting them, according to their response to the thermal stimulus. Hence, several platforms including thermo-responsive systems, shape memory polymers, thermo-optically responsive systems, phase change materials, thermoelectric materials, and pyroelectric materials, have been described and critically discussed. The difference in active species and outputs of the aforementioned categories has been highlighted, evidencing the transversal nature of temperature stimulus. Moreover, the potential of novel thermo-active materials has been pointed out, revealing how their development could take to utmost interesting achievements. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Anna Liguori
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Stefano Pandini
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Chiara Rinoldi
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Nelsi Zaccheroni
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Filippo Pierini
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Maria Letizia Focarete
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Chiara Gualandi
- Department of Chemistry "G. Ciamician" and INSTM UdR of Bologna, University of Bologna, via Selmi 2, Bologna, 40126, Italy
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13
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Parvathy PA, Ayobami AV, Raichur AM, Sahoo SK. Methacrylated alkali lignin grafted P(Nipam-Co-AAc) copolymeric hydrogels: Tuning the mechanical and stimuli-responsive properties. Int J Biol Macromol 2021; 192:180-196. [PMID: 34619273 DOI: 10.1016/j.ijbiomac.2021.09.183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 01/06/2023]
Abstract
The current study reports the preparation of lignin grafted temperature and pH responsive hydrogels through copolymerization of N-isopropylacrylamide, acrylic acid and varying amount of lignin methacrylate (LMA = 50, 100, 150 and 200 mg) as crosslinker adopting radical polymerization technique. Functional group and structural characterizations were carried out to confirm hydrogels synthesis and their network structure. The variation in pore size on addition of lignin revealed the tuning of pores as well as swelling capacity of the hydrogels by suitable amount of LMA. All LMA grafted hydrogels showed temperature responsive behavior and pH dependent sensitivity in swelling, with reduced equilibrium swelling capacity values compared to sample without lignin. In alkali medium at room temperature, the maximum swelling capacity with 48% higher retention was noticed, while a significant reduction in swelling was observed at 40 °C in all media. The addition of lignin still preserved the tensile strength up to 100 kPa and compressive load bearing ability up to 30 kPa in freeze dried state with adequate interfacial stress transfer. An increase in lignin concentration showed enhanced storage modulus (~two-fold increase), adequate loss modulus values and improved cell viability, which paves the way for possible biomedical applications.
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Affiliation(s)
- P A Parvathy
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (ACSIR), Ghaziabad 201002, India
| | - Ajisafe V Ayobami
- Biomaterials and Nanobiotechnology lab, Department of Materials Engineering, Indian Institute of Science (IISc), Bangalore, India
| | - Ashok M Raichur
- Biomaterials and Nanobiotechnology lab, Department of Materials Engineering, Indian Institute of Science (IISc), Bangalore, India
| | - Sushanta K Sahoo
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (ACSIR), Ghaziabad 201002, India.
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14
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Nagase K. Thermoresponsive interfaces obtained using poly(N-isopropylacrylamide)-based copolymer for bioseparation and tissue engineering applications. Adv Colloid Interface Sci 2021; 295:102487. [PMID: 34314989 DOI: 10.1016/j.cis.2021.102487] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/09/2021] [Accepted: 07/10/2021] [Indexed: 12/11/2022]
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm) is the most well-known and widely used stimuli-responsive polymer in the biomedical field owing to its ability to undergo temperature-dependent hydration and dehydration with temperature variations, causing hydrophilic and hydrophobic alterations. This temperature-dependent property of PNIPAAm provides functionality to interfaces containing PNIPAAm. Notably, the hydrophilic and hydrophobic alterations caused by the change in the temperature-responsive property of PNIPAAm-modified interfaces induce temperature-modulated interactions with biomolecules, proteins, and cells. This intrinsic property of PNIPAAm can be effectively used in various biomedical applications, particularly in bioseparation and tissue engineering applications, owing to the functionality of PNIPAAm-modified interfaces based on the temperature modulation of the interaction between PNIPAAm-modified interfaces and biomolecules and cells. This review focuses on PNIPAAm-modified interfaces in terms of preparation method, properties, and their applications. Advances in PNIPAAm-modified interfaces for existing and developing applications are also summarized.
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Affiliation(s)
- Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato, Tokyo 105-8512, Japan.
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15
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Adala I, Ramis J, Ntone Moussinga C, Janowski I, Amer MH, Bennett AJ, Alexander C, Rose FRAJ. Mixed polymer and bioconjugate core/shell electrospun fibres for biphasic protein release. J Mater Chem B 2021; 9:4120-4133. [PMID: 33982048 DOI: 10.1039/d1tb00129a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effective regenerative medicine requires delivery systems which can release multiple components at appropriate levels and at different phases of tissue growth and repair. However, there are few biomaterials and encapsulation techniques that are fully suitable for the loading and controlled release of multiple proteins. In this study we describe how proteins were physically and chemically loaded into a single coaxial electrospun fibre scaffold to obtain bi-phasic release profiles. Cyto-compatible polymers were used to construct the scaffold, using polyethylene oxide (PEO) for the core and polycaprolactone (PCL) reacted or mixed with (bis-aminopropyl)polyether (Jeffamine ED2003; JFA) for the shell. Horseradish peroxidase (HRP), a model protein, was loaded in the core and functionalised onto the scaffold surface by coupling of protein carboxyl groups to the available polymer amine groups. Fibre morphologies were evaluated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and functional group content was determined using X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (TOF SIMS). Hydrophobicity profiles of the fibres before and after protein loading were evaluated by water contact angle (WCA) and the mechanical properties of the electrospun scaffolds were determined by performing tensile tests. The electrospun fibre scaffolds generated by reacting PEO/PCL with 1,6-diaminohexane and those from mixing PEO/PCL with JFA were further characterised for protein conjugation and release. Fibres prepared by the mixed PEO/PCL/JFA system were found to be the most appropriate for the simultaneous release of protein from the core and the immobilisation of another protein on the shell of the same scaffold. Moreover, JFA enhanced scaffold properties in terms of porosity and elasticity. Finally, we successfully demonstrated the cytocompatibility and cell response to protein-loaded and -conjugated scaffolds using HepG2 cells. Enhanced cell attachment (2.5 fold) was demonstrated using bovine serum albumin (BSA)-conjugated scaffolds, and increased metabolic activity observed with retinoic acid (RA)-loaded scaffolds (2.7 fold).
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Affiliation(s)
- Inchirah Adala
- School of Pharmacy, University of Nottingham, Nottingham, UK.
| | - Jopeth Ramis
- School of Pharmacy, University of Nottingham, Nottingham, UK.
| | | | | | - Mahetab H Amer
- School of Molecular and Cellular Biology, University of Leeds, Leeds, UK
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16
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Sustained Release Systems for Delivery of Therapeutic Peptide/Protein. Biomacromolecules 2021; 22:2299-2324. [PMID: 33957752 DOI: 10.1021/acs.biomac.1c00160] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Peptide/protein therapeutics have been significantly applied in the clinical treatment of various diseases such as cancer, diabetes, etc. owing to their high biocompatibility, specificity, and therapeutic efficacy. However, due to their immunogenicity, instability stemming from its complex tertiary and quaternary structure, vulnerability to enzyme degradation, and rapid renal clearance, the clinical application of protein/peptide therapeutics is significantly confined. Though nanotechnology has been demonstrated to prevent enzyme degradation of the protein therapeutics and thus enhance the half-life, issues such as initial burst release and uncontrollable release kinetics are still unsolved. Moreover, the traditional administration method results in poor patient compliance, limiting the clinical application of protein/peptide therapeutics. Exploiting the sustained-release formulations for more controllable delivery of protein/peptide therapeutics to decrease the frequency of injection and enhance patient compliance is thus greatly meaningful. In this review, we comprehensively summarize the substantial advancements of protein/peptide sustained-release systems in the past decades. In addition, the advantages and disadvantages of all these sustained-release systems in clinical application together with their future challenges are also discussed in this review.
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17
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Chen R, Lin L, Wang H, Zhai X, Liang Y, Zhao B, Yu Z, Li K, Shen W. Effects of Morphologies of Thermosensitive Electrospun Nanofibers on Controllable Drug Release. Tissue Eng Part A 2020; 27:724-732. [PMID: 33143573 DOI: 10.1089/ten.tea.2020.0258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Electrospun nanofibers is a promising and versatile avenue for building controlled drug release system because of the facile fabrication and the broad range of polymer materials. This research systematically studied the morphological effect of thermosensitive electrospun nanofibers, including porous and coaxial structures, on controllable drug release. Three types of drugs, nicotinamide, paracetamol, and ibuprofen, with different hydrophilicity were applied in this study. The data of drug release were all fitted to the first-order kinetic model regardless of the drug properties, and the release rates paralleled with their hydrophilicity. Sol-gel phase transition of the thermosensitive poly(N-isopropylacrylamide) (PNIPAAm) hydrogel led to slower drug release at 37°C compared with those at 25°C. Regarding morphology, coaxial nanofibers could provide higher loading efficiency and slower drug release rather than porous nanofibers. Our research highlighted the overall effects of compound property, temperature, and the morphological structures of thermosensitive electrospun nanofibers on the controlled drug release. Our results concluded that hydrophobic drug encapsulated in the core-shell PNIPAAm nanofibers could perform excellent sustained release and also controllable release under temperature stumuli. Impact statement The behaviors for the controlled release of drugs loaded in the thermosensitive electrospun nanofibers could be affected by various factors including the properties of loaded drug, morphologies of nanofibrous, and lower critical solution temperatures of thermosensitive hydrogels. However, few systematical investigations have been performed in this area. In this article, we designed and fabricated porous and coaxial thermosensitive poly(N-isopropylacrylamide) electrospun nanofibers with different drug loading to study the comprehensive effect. This study suggested when adopting thermosensitive electrospun hydrogel nanofibers as the controllable drug release carrier, the hydrophilicity of loaded compounds and the morphologies of nanofibers are necessary to be optimized.
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Affiliation(s)
- Rong Chen
- School of Science, China Pharmaceutical University, Nanjing, China.,Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing, China
| | - Lulu Lin
- School of Science, China Pharmaceutical University, Nanjing, China.,Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing, China
| | - Hanyang Wang
- School of Science, China Pharmaceutical University, Nanjing, China
| | - Xinhui Zhai
- School of Science, China Pharmaceutical University, Nanjing, China.,Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing, China
| | - Yuwen Liang
- School of Science, China Pharmaceutical University, Nanjing, China
| | - Benzheng Zhao
- School of Science, China Pharmaceutical University, Nanjing, China
| | - Zhuo Yu
- School of Science, China Pharmaceutical University, Nanjing, China
| | - Kaiyue Li
- School of Science, China Pharmaceutical University, Nanjing, China
| | - Weiyang Shen
- School of Science, China Pharmaceutical University, Nanjing, China.,Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing, China
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18
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Han Y, Lian M, Sun B, Jia B, Wu Q, Qiao Z, Dai K. Preparation of high precision multilayer scaffolds based on Melt Electro-Writing to repair cartilage injury. Theranostics 2020; 10:10214-10230. [PMID: 32929344 PMCID: PMC7481411 DOI: 10.7150/thno.47909] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 08/03/2020] [Indexed: 12/22/2022] Open
Abstract
Rationale: Articular cartilage injury is quite common. However, post-injury cartilage repair is challenging and often requires medical intervention, which can be aided by 3D printed tissue engineering scaffolds. Specifically, the high accuracy of Melt Electro-Writing (MEW) technology facilitates the printing of scaffolds that imitate the structure and composition of natural cartilage to promote repair. Methods: MEW and Inkjet printing technology was employed to manufacture a composite scaffold that was then implanted into a cartilage injury site through microfracture surgery. While printing polycaprolactone (PCL) or PCL/hydroxyapatite (HA) scaffolds, cytokine-containing microspheres were sprayed alternately to form multiple layers containing transforming growth factor-β1 and bone morphogenetic protein-7 (surface layer), insulin-like growth factor-1 (middle layer), and HA (deep layer). Results: The composite biological scaffold was conducive to adhesion, proliferation, and differentiation of mesenchymal stem cells recruited from the bone marrow and blood. Meanwhile, the environmental differences between the scaffold's layers contributed to the regional heterogeneity of chondrocytes and secreted proteins to promote functional cartilage regeneration. The biological effect of the composite scaffold was validated both in vitro and in vivo. Conclusion: A cartilage repair scaffold was established with high precision as well as promising mechanical and biological properties. This scaffold can promote the repair of cartilage injury by using, and inducing the differentiation and expression of, autologous bone marrow mesenchymal stem cells.
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19
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Dehghan-Manshadi N, Fattahi S, Hadizadeh M, Nikukar H, Moshtaghioun SM, Aflatoonian B. The influence of elastomeric polyurethane type and ratio on the physicochemical properties of electrospun polyurethane/silk fibroin hybrid nanofibers as potential scaffolds for soft and hard tissue engineering. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109294] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Allen AC, Barone E, Momtahan N, Crosby CO, Tu C, Deng W, Polansky K, Zoldan J. Temporal Impact of Substrate Anisotropy on Differentiating Cardiomyocyte Alignment and Functionality. Tissue Eng Part A 2019; 25:1426-1437. [PMID: 30727863 PMCID: PMC6939589 DOI: 10.1089/ten.tea.2018.0258] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 01/29/2019] [Indexed: 01/14/2023] Open
Abstract
Anisotropic biomaterials can affect cell function by driving cell alignment, which is critical for cardiac engineered tissues. Recent work, however, has shown that pluripotent stem cell-derived cardiomyocytes may self-align over long periods of time. To determine how the degree of biomaterial substrate anisotropy impacts differentiating cardiomyocyte structure and function, we differentiated mouse embryonic stem cells to cardiomyocytes on nonaligned, semialigned, and aligned fibrous substrates and evaluated cell alignment, contractile displacement, and calcium transient synchronicity over time. Although cardiomyocyte gene expression was not affected by fiber alignment, we observed gradient- and threshold-based differences in cardiomyocyte alignment and function. Cardiomyocyte alignment increased with the degree of fiber alignment in a gradient-based manner at early time points and in a threshold-based manner at later time points. Calcium transient synchronization tightly followed cardiomyocyte alignment behavior, allowing highly anisotropic biomaterials to drive calcium transient synchronization within 8 days, while such synchronized cardiomyocyte behavior required 20 days of culture on nonaligned biomaterials. In contrast, cardiomyocyte contractile displacement had no directional preference on day 8 yet became anisotropic in the direction of fiber alignment on aligned fibers by day 20. Biomaterial anisotropy impact on differentiating cardiomyocyte structure and function is temporally dependent. Impact Statement This work demonstrates that biomaterial anisotropy can quickly drive desired pluripotent stem cell-derived cardiomyocyte structure and function. Such an understanding of matrix anisotropy's time-dependent influence on stem cell-derived cardiomyocyte function will have future applications in the development of cardiac cell therapies and in vitro cardiac tissues for drug testing. Furthermore, our work has broader implications concerning biomaterial anisotropy effects on other cell types in which function relies on alignment, such as myocytes and neurons.
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Affiliation(s)
- Alicia C.B. Allen
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Elissa Barone
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Nima Momtahan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Cody O. Crosby
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Chengyi Tu
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Wei Deng
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Krista Polansky
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Janet Zoldan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
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21
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22
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Young RE, Graf J, Miserocchi I, Van Horn RM, Gordon MB, Anderson CR, Sefcik LS. Optimizing the alignment of thermoresponsive poly(N-isopropyl acrylamide) electrospun nanofibers for tissue engineering applications: A factorial design of experiments approach. PLoS One 2019; 14:e0219254. [PMID: 31276542 PMCID: PMC6611625 DOI: 10.1371/journal.pone.0219254] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 06/19/2019] [Indexed: 11/18/2022] Open
Abstract
Thermoresponsive polymers, such as poly(N-isopropyl acrylamide) (PNIPAM), have been identified and used as cell culture substrates, taking advantage of the polymer's lower critical solution temperature (LCST) to mechanically harvest cells. This technology bypasses the use of biochemical enzymes that cleave important cell-cell and cell-matrix interactions. In this study, the process of electrospinning is used to fabricate and characterize aligned PNIPAM nanofiber scaffolds that are biocompatible and thermoresponsive. Nanofiber scaffolds produced by electrospinning possess a 3D architecture that mimics native extracellular matrix, providing physical and chemical cues to drive cell function and phenotype. We present a factorial design of experiments (DOE) approach to systematically determine the effects of different electrospinning process parameters on PNIPAM nanofiber diameter and alignment. Results show that high molecular weight PNIPAM can be successfully electrospun into both random and uniaxially aligned nanofiber mats with similar fiber diameters by simply altering the speed of the rotating mandrel collector from 10,000 to 33,000 RPM. PNIPAM nanofibers were crosslinked with OpePOSS, which was verified using FTIR. The mechanical properties of the scaffolds were characterized using dynamic mechanical analysis, revealing an order of magnitude difference in storage modulus (MPa) between cured and uncured samples. In summary, cross-linked PNIPAM nanofiber scaffolds were determined to be stable in aqueous culture, biocompatible, and thermoresponsive, enabling their use in diverse cell culture applications.
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Affiliation(s)
- Rachel E. Young
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
| | - Jodi Graf
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
| | - Isabella Miserocchi
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
| | - Ryan M. Van Horn
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
| | - Melissa B. Gordon
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
| | - Christopher R. Anderson
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
| | - Lauren S. Sefcik
- Department of Chemical and Biomolecular Engineering, Lafayette College, Easton, Pennsylvania, United States of America
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Goth W, Potter S, Allen ACB, Zoldan J, Sacks MS, Tunnell JW. Non-Destructive Reflectance Mapping of Collagen Fiber Alignment in Heart Valve Leaflets. Ann Biomed Eng 2019; 47:1250-1264. [PMID: 30783832 PMCID: PMC6456388 DOI: 10.1007/s10439-019-02233-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 02/15/2019] [Indexed: 12/11/2022]
Abstract
Collagen fibers are the primary structural elements that define many soft-tissue structure and mechanical function relationships, so that quantification of collagen organization is essential to many disciplines. Current tissue-level collagen fiber imaging techniques remain limited in their ability to quantify fiber organization at macroscopic spatial scales and multiple time points, especially in a non-contacting manner, requiring no modifications to the tissue, and in near real-time. Our group has previously developed polarized spatial frequency domain imaging (pSFDI), a reflectance imaging technique that rapidly and non-destructively quantifies planar collagen fiber orientation in superficial layers of soft tissues over large fields-of-view. In this current work, we extend the light scattering models and image processing techniques to extract a critical measure of the degree of collagen fiber alignment, the normalized orientation index (NOI), directly from pSFDI data. Electrospun fiber samples with architectures similar to many collagenous soft tissues and known NOI were used for validation. An inverse model was then used to extract NOI from pSFDI measurements of aortic heart valve leaflets and clearly demonstrated changes in degree of fiber alignment between opposing sides of the sample. These results show that our model was capable of extracting absolute measures of degree of fiber alignment in superficial layers of heart valve leaflets with only general a priori knowledge of fiber properties, providing a novel approach to rapid, non-destructive study of microstructure in heart valve leaflets using a reflectance geometry.
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Affiliation(s)
- Will Goth
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Institute for Computational Engineering and Sciences, Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Sam Potter
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Institute for Computational Engineering and Sciences, Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Alicia C B Allen
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Janet Zoldan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Michael S Sacks
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Institute for Computational Engineering and Sciences, Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - James W Tunnell
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA.
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Institute for Computational Engineering and Sciences, Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA.
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24
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Fan Z, Nie Y, Chen Z, Xie X, Liao X, Wei Y. Construction of novel temperature-responsive hydrogel culture system based on the biomimetic method for stem cell sheet harvest. J BIOACT COMPAT POL 2019. [DOI: 10.1177/0883911519841393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Temperature-responsive hydrogel culture system is considered as an ideal platform for cell sheet harvest, but its complex preparation methods and harsh reaction conditions limit its application. Inspired by the marine mussels, a biomimetic method presented here is to construct a novel temperature-responsive hydrogel culture system for stem cell sheet harvest. The tissue culture polystyrene is first modified with polydopamine coating, and then amine-terminated poly(N-isopropylacrylamide) is grafted onto the coating via the Schiff base or Michael addition reaction to construct the temperature-sensitive hydrogel culture system. Then, bone marrow stromal cells are cultured on the culture system to construct cell sheets. The prepared culture system shows significant temperature-sensitive property with the grafted concentrations of poly(N-isopropylacrylamide) ranging from 0.5 to 1 g/L. Meanwhile, the constructed culture system has low cytotoxicity and facilitates the stem cell adhesion, proliferation, and cell sheet formation at 37°C. When the culture system is placed in a 20°C environment, the cell sheet can be completely detached from the surface of tissue culture polystyrene without being treated with any enzymes. More importantly, the cell morphology, cell sheet thickness, and the fibril structure of the associated proteins are similar to the cells cultured on the tissue culture polystyrene without modification. The biomimetic, simple, inexpensive, and environmentally friendly preparation of the culture system enables it to be used for the harvest of cell sheet and even applied to tissue engineering for tissue regeneration.
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Affiliation(s)
- Zengjie Fan
- School of Stomatology, Lanzhou University, Lanzhou, P.R. China
| | - Yingying Nie
- Institute of Sensing Technology, Gansu Academy of Sciences, Lanzhou, P.R. China
| | - Zizi Chen
- School of Stomatology, Lanzhou University, Lanzhou, P.R. China
| | - Xuzhuzi Xie
- School of Stomatology, Lanzhou University, Lanzhou, P.R. China
| | - Xiaozhu Liao
- School of Stomatology, Lanzhou University, Lanzhou, P.R. China
| | - Yuan Wei
- School of Stomatology, Lanzhou University, Lanzhou, P.R. China
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25
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Florczak S, Lorson T, Zheng T, Mrlik M, Hutmacher DW, Higgins MJ, Luxenhofer R, Dalton PD. Melt electrowriting of electroactive poly(vinylidene difluoride) fibers. POLYM INT 2019. [DOI: 10.1002/pi.5759] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sammy Florczak
- Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute University Clinic Würzburg Würzburg Germany
- Institute for Health and Biomedical Innovation Queensland University of Technology Brisbane Australia
| | - Thomas Lorson
- Polymer Functional Materials, Chair for Advanced Materials Synthesis, Department of Chemistry and Pharmacy and Bavarian Polymer Institute Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Tian Zheng
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute University of Wollongong Wollongong Australia
- Materials Characterisation and Fabrication Platform University of Melbourne Melbourne Australia
| | - Miroslav Mrlik
- Polymer Functional Materials, Chair for Advanced Materials Synthesis, Department of Chemistry and Pharmacy and Bavarian Polymer Institute Julius‐Maximilians‐University Würzburg Würzburg Germany
- Centre of Polymer Systems University Institute, Tomas Bata University in Zlin Zlin Czech Republic
| | - Dietmar W Hutmacher
- Institute for Health and Biomedical Innovation Queensland University of Technology Brisbane Australia
| | - Michael J Higgins
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute University of Wollongong Wollongong Australia
| | - Robert Luxenhofer
- Polymer Functional Materials, Chair for Advanced Materials Synthesis, Department of Chemistry and Pharmacy and Bavarian Polymer Institute Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Paul D Dalton
- Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute University Clinic Würzburg Würzburg Germany
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26
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Cui Y, Xing Z, Yan J, Lu Y, Xiong X, Zheng L. Thermosensitive Behavior and Super-Antibacterial Properties of Cotton Fabrics Modified with a Sercin-NIPAAm-AgNPs Interpenetrating Polymer Network Hydrogel. Polymers (Basel) 2018; 10:E818. [PMID: 30960743 PMCID: PMC6403810 DOI: 10.3390/polym10080818] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/24/2018] [Accepted: 07/24/2018] [Indexed: 01/06/2023] Open
Abstract
Poly(N-isopropylacrylamide) (PNIPAAm), sericin (SS), and silver nitrate were combined to prepare an interpenetrating network (IPN) hydrogel having dual functions of temperature sensitivity and antibacterial properties. The structure and size of AgNPs in such an IPN hydrogel were characterized by the Fourier Transform Infrared spectrum (FT-IR), X-ray powder diffraction (XRD) and Transmission Electron Microscope (TEM), and the thermal properties of the IPN hydrogel were characterized by Differential Scanning Calorimetry (DSC). Based on XRD patterns, Ag⁺ was successfully reduced to Ag⁰ by SS. It was observed by TEM that the particle size of silver particles was lower than 100 nm. The glass transition temperature (Tg) of IPN hydrogel was better than that of the PNIPAAm/AgNPs hydrogels, and lower critical solution temperature (LCST) values of the IPN hydrogel were obtained by DSC i.e. 31 °C. The thermal stability of the IPN hydrogel was successfully determined by the TGA. This IPN hydrogel was then used to modify the cotton fabrics by the "impregnation" method using glutaraldehyde (GA) as the cross-linking agent. The structures and properties of IPN hydrogel modified cotton fabric were characterized by scanning electron microscopy (SEM), FT-IR, and the thermogravimetry analysis (TGA). The results show that NIPAAm was successfully polymerized into PNIPAAm, and that there were neglected new groups in the hydrogel IPN. The IPN hydrogel was then successfully grafted onto cotton fabrics. SEM observations showed that the IPN hydrogel formed a membrane structure between the fibers, and improved the compactness of the fibers. At the temperature close to LCST (≈31 °C), the entire system was easily able to absorb water molecules. However, the hydrophilicity tended to decrease when the temperature was higher or lower than the LCST. The antibacterial rates of the modified cotton fabric against S. aureus and E. coli were as high as 99%.
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Affiliation(s)
- Yifan Cui
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Zijing Xing
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Jun Yan
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Yanhua Lu
- Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong 118003, China.
| | - Xiaoqing Xiong
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Laijiu Zheng
- Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
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27
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Nagata K, Kurebayashi T, Imato K, Takeda N. Photoresponsive fiber scaffolds with a core-sheath nanostructure for regulating cell behaviors. J Mater Chem B 2018; 6:2052-2056. [PMID: 32254428 DOI: 10.1039/c8tb00469b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein, we report the fabrication of photoresponsive three-dimensional (3D) fiber scaffolds for the first time, where photoresponsive polymers are localized on their fiber surfaces of nano thickness, using a simple and practical co-axial (core-sheath) electrospinning technique. Cell adhesion to the 3D scaffolds was regulated by photostimulation.
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Affiliation(s)
- Kazuho Nagata
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University (TWIns), 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan.
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28
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Yu L, Zhang M, Du FS, Li ZC. ROS-responsive poly(ε-caprolactone) with pendent thioether and selenide motifs. Polym Chem 2018. [DOI: 10.1039/c8py00620b] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Synthesis and oxidation properties of three chalcogen-containing ROS-responsive poly(ε-caprolactone)s have been reported.
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Affiliation(s)
- Li Yu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Mei Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
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