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Xie C, Yang X, Zheng F, Shi J, Huo C, Wang Z, Reis RL, Kundu SC, Xiao B, Duan L. Facilely printed silk fibroin hydrogel microparticles as injectable long-lasting fillers. Biomater Sci 2024; 12:375-386. [PMID: 37997042 DOI: 10.1039/d3bm01488f] [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: 11/25/2023]
Abstract
There is a high demand from aging people for facial fillers with desirable biocompatibility and lasting filling effects to overcome facial depression. Novel injectable regenerated silk fibroin (RSF) microparticles were facilely printed from a glycidyl methacrylate-modified silk fibroin hydrogel to address this issue. The β-sheet content and mechanical properties of the RSF hydrogel can be simply modulated by the number of freeze-thawing cycles, and the swelling rate of the RSF hydrogel in saline was negligible. The printed RSF microparticles were uniform, and their diameter was about 300-500 μm, which could be adjusted by the pore sizes of the printed screens. After the injection with a 26-gauge needle, the size distribution of RSF microparticles had no noticeable variation, suggesting that the microparticles could bear the shear strain without breaking during the injection. The in vitro experiments demonstrated that RSF not only had desirable biocompatibility but also facilitated fibroblast migration. The subcutaneous injection experiments demonstrated that the RSF microparticles formed a lasting spot in the injected site. The tissue sections revealed that the RSF microparticles were still distinct on week 8, and blood vessels formed around the microparticles. These promising data demonstrate that the printed RSF microparticles have great potential for facial rejuvenation.
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Affiliation(s)
- Chunyu Xie
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Xiao Yang
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Fan Zheng
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Jiahao Shi
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Caixia Huo
- Beijing Green Pharmaceutical Technology Co., Ltd, Fengtai, Beijing 100070, China
| | - Zuyuan Wang
- Beijing Green Pharmaceutical Technology Co., Ltd, Fengtai, Beijing 100070, China
| | - Rui L Reis
- 3Bs Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco 4805-017, Guimaraes, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Subhas C Kundu
- 3Bs Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco 4805-017, Guimaraes, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Bo Xiao
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Lian Duan
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
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2
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Haq-Siddiqi NA, Britton D, Kim Montclare J. Protein-engineered biomaterials for cartilage therapeutics and repair. Adv Drug Deliv Rev 2023; 192:114647. [PMID: 36509172 DOI: 10.1016/j.addr.2022.114647] [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: 06/05/2022] [Revised: 10/17/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
Cartilage degeneration and injury are major causes of pain and disability that effect millions, and yet treatment options for conditions like osteoarthritis (OA) continue to be mainly palliative or involve complete replacement of injured joints. Several biomaterial strategies have been explored to address cartilage repair either by the delivery of therapeutics or as support for tissue repair, however the complex structure of cartilage tissue, its mechanical needs, and lack of regenerative capacity have hindered this goal. Recent advances in synthetic biology have opened new possibilities for engineered proteins to address these unique needs. Engineered protein and peptide-based materials benefit from inherent biocompatibility and nearly unlimited tunability as they utilize the body's natural building blocks to fabricate a variety of supramolecular structures. The pathophysiology and needs of OA cartilage are presented here, along with an overview of the current state of the art and next steps for protein-engineered repair strategies for cartilage.
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Affiliation(s)
- Nada A Haq-Siddiqi
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States
| | - Dustin Britton
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States
| | - Jin Kim Montclare
- Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States; Department of Chemistry, New York University, New York 10003, United States; Department of Radiology, New York University Grossman School of Medicine, New York 10016, United States; Department of Biomaterials, NYU College of Dentistry, New York, NY 10010, United States; Department of Biomedical Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, United States.
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3
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Zhang S, Ge G, Qin Y, Li W, Dong J, Mei J, Ma R, Zhang X, Bai J, Zhu C, Zhang W, Geng D. Recent advances in responsive hydrogels for diabetic wound healing. Mater Today Bio 2022; 18:100508. [PMID: 36504542 PMCID: PMC9729074 DOI: 10.1016/j.mtbio.2022.100508] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/26/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
Poor wound healing after diabetes mellitus remains a challenging problem, and its pathophysiological mechanisms have not yet been fully elucidated. Persistent bleeding, disturbed regulation of inflammation, blocked cell proliferation, susceptible infection and impaired tissue remodeling are the main features of diabetic wound healing. Conventional wound dressings, including gauze, films and bandages, have a limited function. They generally act as physical barriers and absorbers of exudates, which fail to meet the requirements of the whol diabetic wound healing process. Wounds in diabetic patients typically heal slowly and are susceptible to infection due to hyperglycemia within the wound bed. Once bacterial cells develop into biofilms, diabetic wounds will exhibit robust drug resistance. Recently, the application of stimuli-responsive hydrogels, also known as "smart hydrogels", for diabetic wound healing has attracted particular attention. The basic feature of this system is its capacities to change mechanical properties, swelling ability, hydrophilicity, permeability of biologically active molecules, etc., in response to various stimuli, including temperature, potential of hydrogen (pH), protease and other biological factors. Smart hydrogels can improve therapeutic efficacy and limit total toxicity according to the characteristics of diabetic wounds. In this review, we summarized the mechanism and application of stimuli-responsive hydrogels for diabetic wound healing. It is hoped that this work will provide some inspiration and suggestions for research in this field.
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Affiliation(s)
- Siming Zhang
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Gaoran Ge
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Yi Qin
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Wenhao Li
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Jiale Dong
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Jiawei Mei
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Ruixiang Ma
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Xianzuo Zhang
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China
| | - Jiaxiang Bai
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Chen Zhu
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China,Corresponding author.
| | - Weiwei Zhang
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230022, China,Corresponding author.
| | - Dechun Geng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China,Corresponding author.
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Soh WWM, Zhu J, Song X, Jain D, Yim EKF, Li J. Detachment of bovine corneal endothelial cell sheets by cooling-induced surface hydration of poly[( R)-3-hydroxybutyrate]-based thermoresponsive copolymer coating. J Mater Chem B 2022; 10:8407-8418. [DOI: 10.1039/d2tb01926d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A smart surface was prepared by non-covalently coating of a thermoresponsive copolymer via a simple drop-casting method. The smart surface was conducive to cell culture, from which intact cell sheets could be effectively detached by cooling.
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Affiliation(s)
- Wilson Wee Mia Soh
- Department of Biomedical Engineering, National University of Singapore, 15 Kent Ridge Crescent, Singapore 119276, Singapore
| | - Jingling Zhu
- Department of Biomedical Engineering, National University of Singapore, 15 Kent Ridge Crescent, Singapore 119276, Singapore
- NUS Environmental Research Institute (NERI), National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Xia Song
- Department of Biomedical Engineering, National University of Singapore, 15 Kent Ridge Crescent, Singapore 119276, Singapore
| | - Deepak Jain
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
| | - Evelyn K. F. Yim
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
- Center for Biotechnology and Bioengineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
| | - Jun Li
- Department of Biomedical Engineering, National University of Singapore, 15 Kent Ridge Crescent, Singapore 119276, Singapore
- NUS Environmental Research Institute (NERI), National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Singapore
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5
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Stefan DS, Bosomoiu M, Constantinescu RR, Ignat M. Composite Polymers from Leather Waste to Produce Smart Fertilizers. Polymers (Basel) 2021; 13:4351. [PMID: 34960902 PMCID: PMC8704668 DOI: 10.3390/polym13244351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/28/2021] [Accepted: 12/07/2021] [Indexed: 11/23/2022] Open
Abstract
The leather industry is facing important environmental issues related to waste disposal. The waste generated during the tanning process is an important resource of protein (mainly collagen) which can be extracted and reused in different applications (e.g., medical, agricultural, leather industry). On the other side, the utilization of chemical fertilizers must be decreased because of the negative effects associated to an extensive use of conventional chemical fertilizers. This review presents current research trends, challenges and future perspectives with respect to the use of hide waste to produce composite polymers that are further transformed in smart fertilizers. Hide waste contains mostly protein (collagen that is a natural polymer), that is extracted to be used in the cross-linking with water soluble copolymers to obtain the hydrogels which are further valorised as smart fertilizers. Smart fertilizers are a new class of fertilizers which allow the controlled release of the nutrients in synchronization with the plant's demands. Characteristics of hide and leather wastes are pointed out. The fabrication methods of smart fertilizers and the mechanisms for the nutrients release are extensively discussed. This novel method is in agreement with the circular economy concepts and solves, on one side, the problem of hide waste disposal, and on the other side produces smart fertilizers that can successfully replace conventional chemical fertilizers.
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Affiliation(s)
- Daniela Simina Stefan
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania;
| | - Magdalena Bosomoiu
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania;
| | - Rodica Roxana Constantinescu
- Leather and Footwear Research Institute (ICPI) Division, National Research & Development Institute for Textiles and Leather, 93 Ion Minulescu Street, 031215 Bucharest, Romania; (R.R.C.); (M.I.)
| | - Madalina Ignat
- Leather and Footwear Research Institute (ICPI) Division, National Research & Development Institute for Textiles and Leather, 93 Ion Minulescu Street, 031215 Bucharest, Romania; (R.R.C.); (M.I.)
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6
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Stefan DS, Zainescu G, Manea-Saghin AM, Triantaphyllidou IE, Tzoumani I, Tatoulis TI, Syriopoulos GT, Meghea A. Collagen-Based Hydrogels Composites from Hide Waste to Produce Smart Fertilizers. MATERIALS 2020; 13:ma13194396. [PMID: 33019785 PMCID: PMC7579580 DOI: 10.3390/ma13194396] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/29/2020] [Accepted: 09/29/2020] [Indexed: 11/16/2022]
Abstract
The study aims at reusing and recycling the protein hide waste from the leather industry in ecological conditions by elaborating an innovative procedure in order to obtain a collagen matrix functionalized with nitrogen, phosphorus, and potassium (NPK) nutrients to be used for preparing smart fertilizers. This is an interdisciplinary approach, as it starts from hide waste raw material as a critical industrial waste, which is then subjected to several technological steps by selection of optimal processing parameters, followed by product fabrication at the laboratory, and next scales to the industrial pilot plant to obtain novel agro-hydrogels. In this context, the technology scheme for collagen hydrolysate with encapsulated nutrients was proposed and the process parameters were optimized by functionalization of agro-hydrogels with various natural and synthetic polymers, such as polyacrylamide, poly(sodium 4-styrenesulfonate-co-glycidyl methacrylate) copolymer, starch or dolomite. Based on the laboratory experiments, a pilot plant was constructed and tested. Taking as reference the collagen hydrolysate with encapsulated nutrients, the new fertilizers were adequately characterized by chemical analysis, determination of biodegradability and the degree of release of oxidable compounds in water. Based on the biodegradation mechanism and kinetic analysis of oxidable compounds release, adequate arguments are evidenced to demonstrate that these fertilizers can be applied for amendment of poor agricultural soils.
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Affiliation(s)
- Daniela Simina Stefan
- Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu str., RO-011061 Bucharest, Romania;
| | - Gabriel Zainescu
- National R&D Research Institute for Textile and Leather Division: Leather and Footwear Research Institute, 93 Ion Minulescu str., RO-031215 Bucharest, Romania;
| | - Ana-Maria Manea-Saghin
- Research Center for Environmental Protection and Eco-Friendly Technologies, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Polizu str., RO-011061 Bucharest, Romania;
| | - Irene-Eva Triantaphyllidou
- Department of Chemical Engineering, University of Patras, Rio, GR-26504 Patras, Greece;
- Foundation for Research and Technology-Hellas (FORTH)/Institute of Chemical Engineering Sciences (ICE-HT), Stadiou Str., Platani, GR-26504 Patras, Greece;
| | - Ioanna Tzoumani
- Foundation for Research and Technology-Hellas (FORTH)/Institute of Chemical Engineering Sciences (ICE-HT), Stadiou Str., Platani, GR-26504 Patras, Greece;
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece
| | - Triantafyllos I. Tatoulis
- Sirmet SA, Engineering and Management, 4-6 Filopoimenos str., 26221 Patras, Greece; (T.I.T.); (G.T.S.)
| | - George T. Syriopoulos
- Sirmet SA, Engineering and Management, 4-6 Filopoimenos str., 26221 Patras, Greece; (T.I.T.); (G.T.S.)
| | - Aurelia Meghea
- Research Center for Environmental Protection and Eco-Friendly Technologies, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1–7 Polizu str., RO-011061 Bucharest, Romania;
- Correspondence:
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Pertici V, Trimaille T, Gigmes D. Inputs of Macromolecular Engineering in the Design of Injectable Hydrogels Based on Synthetic Thermoresponsive Polymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b00705] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Vincent Pertici
- Aix-Marseille Univ, CNRS, Institut de Chimie Radicalaire, ICR UMR 7273, 13397 Marseille, France
| | - Thomas Trimaille
- Aix-Marseille Univ, CNRS, Institut de Chimie Radicalaire, ICR UMR 7273, 13397 Marseille, France
| | - Didier Gigmes
- Aix-Marseille Univ, CNRS, Institut de Chimie Radicalaire, ICR UMR 7273, 13397 Marseille, France
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Injectable taurine-loaded alginate hydrogels for retinal pigment epithelium (RPE) regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109787. [PMID: 31349479 DOI: 10.1016/j.msec.2019.109787] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 05/09/2019] [Accepted: 05/20/2019] [Indexed: 01/07/2023]
Abstract
The purpose of this study is to produce injectable taurine (Tr)-loaded alginate (Agn) hydrogel for age-related macular degeneration (AMD) treatment by inducing the regeneration of RPE (retinal pigment epithelium) cells. Porosity and swelling ratio were measured to evaluate the mechanical properties of the hydrogels, and Fourier transform infrared spectroscopy (FTIR) was used to evaluate the physical and chemical properties. RPE cells extracted from the pigmented epithelium of rabbits were encapsulated in the Tr/Agn hydrogels. Cells proliferation and migration were improved in Tr/Agn hydrogels with an enhanced expression of RPE-specific genes including RPE65, CRALBP, NPR-A, MITF and collagen type I and II. In vivo tests demonstrated the excellent biocompatibility and biodegradability without inflammatory response by the host when implanted with the hydrogel. Moreover, when the Tr/Agn hydrogels were injected into the sub-retinal space, high adhesion of RPE cells and retinal regeneration were confirmed. These results demonstrated a potential role of injectable Tr/Agn hydrogels as potential therapeutic tools for the treatment of retinal diseases, including AMD.
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Pertici V, Pin-Barre C, Rivera C, Pellegrino C, Laurin J, Gigmes D, Trimaille T. Degradable and Injectable Hydrogel for Drug Delivery in Soft Tissues. Biomacromolecules 2018; 20:149-163. [PMID: 30376309 DOI: 10.1021/acs.biomac.8b01242] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Injectable hydrogels are promising platforms for tissue engineering and local drug delivery as they allow minimal invasiveness. We have here developed an injectable and biodegradable hydrogel based on an amphiphilic PNIPAAm- b-PLA- b-PEG- b-PLA- b-PNIPAAm pentablock copolymer synthesized by ring-opening polymerization/nitroxide-mediated polymerization (ROP/NMP) combination. The hydrogel formation at around 30 °C was demonstrated to be mediated by intermicellar bridging through the PEG central block. Such a result was particularly highlighted by the inability of a PEG- b-PLA- b-PNIPAAm triblock analog of the same composition to gelify. The hydrogels degraded through hydrolysis of the PLA esters until complete mass loss due to the diffusion of the recovered PEG and PNIPAAm/micelle based residues in the solution. Interestingly, hydrophobic molecules such as riluzole (neuroprotective drug) or cyanine 5.5 (imaging probe) could be easily loaded in the hydrogels' micelle cores by mixing them with the copolymer solution at room temperature. Drug release was correlated to polymer mass loss. The hydrogel was shown to be cytocompatible (neuronal cells, in vitro) and injectable through a small-gauge needle (in vivo in rats). Thus, this hydrogel platform displays highly attractive features for use in brain/soft tissue engineering as well as in drug delivery.
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Affiliation(s)
- Vincent Pertici
- Aix Marseille Université, CNRS, ICR , F-13397 Marseille , France
| | | | - Claudio Rivera
- Aix Marseille Université, INSERM, INMED , F-13397 Marseille , France
| | | | - Jérôme Laurin
- Aix Marseille Université, CNRS, ISM , F-13397 Marseille , France
| | - Didier Gigmes
- Aix Marseille Université, CNRS, ICR , F-13397 Marseille , France
| | - Thomas Trimaille
- Aix Marseille Université, CNRS, ICR , F-13397 Marseille , France
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Vashist A, Kaushik A, Alexis K, Dev Jayant R, Sagar V, Vashist A, Nair M. Bioresponsive Injectable Hydrogels for On-demand Drug Release and Tissue Engineering. Curr Pharm Des 2017; 23:3595-3602. [PMID: 28521694 PMCID: PMC6889087 DOI: 10.2174/1381612823666170516144914] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 04/25/2017] [Accepted: 05/08/2017] [Indexed: 12/13/2022]
Abstract
The emergence of injectable hydrogels as biomaterials has been a revolutionary breakthrough in the field of on-demand drug delivery and tissue engineering. The promising features of these systems include their biodegradability, biocompatibility, permeability, ease of the surgical implantation, and most importantly exhibit minimally invasiveness. These hydrogels have been explored as sustained and on-demand release carriers for the various bioactive agents, growth factors, live cells, various hydrophobic drugs and as extracellular matrices for tissue engineering. Present review is an attempt to highlight the recent systems explored for on-demand drug release and tissue engineering. It also gives an overview of the role of nanotechnology in the advancements of injectable hydrogels. The future prospects and challenges of these hydrogels have also been addressed.
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Affiliation(s)
- Arti Vashist
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL-33199 USA
| | - Ajeet Kaushik
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL-33199 USA
| | - Kayla Alexis
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL-33199 USA
| | - Rahul Dev Jayant
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL-33199 USA
| | - Vidya Sagar
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL-33199 USA
| | - Atul Vashist
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi 110029, Índia
| | - Madhavan Nair
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL-33199 USA
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Nitta K, Kimoto A, Watanabe J. Design and synthesis of an amphiphilic graft hydrogel having a hydrophobic domain formed by multiple interactions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:65-69. [DOI: 10.1016/j.msec.2016.05.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/28/2016] [Accepted: 05/15/2016] [Indexed: 11/28/2022]
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12
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Gao Y, Yang Z, Li X. Regeneration strategies after the adult mammalian central nervous system injury-biomaterials. Regen Biomater 2016; 3:115-22. [PMID: 27047678 PMCID: PMC4817328 DOI: 10.1093/rb/rbw004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 01/04/2016] [Indexed: 01/12/2023] Open
Abstract
The central nervous system (CNS) has very restricted intrinsic regeneration ability under the injury or disease condition. Innovative repair strategies, therefore, are urgently needed to facilitate tissue regeneration and functional recovery. The published tissue repair/regeneration strategies, such as cell and/or drug delivery, has been demonstrated to have some therapeutic effects on experimental animal models, but can hardly find clinical applications due to such methods as the extremely low survival rate of transplanted cells, difficulty in integrating with the host or restriction of blood–brain barriers to administration patterns. Using biomaterials can not only increase the survival rate of grafts and their integration with the host in the injured CNS area, but also sustainably deliver bioproducts to the local injured area, thus improving the microenvironment in that area. This review mainly introduces the advances of various strategies concerning facilitating CNS regeneration.
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Affiliation(s)
- Yudan Gao
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Zhaoyang Yang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China,; Department of Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Xiaoguang Li
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China,; Department of Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
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Xuan S, Lee CU, Chen C, Doyle AB, Zhang Y, Guo L, John VT, Hayes D, Zhang D. Thermoreversible and Injectable ABC Polypeptoid Hydrogels: Controlling the Hydrogel Properties through Molecular Design. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2016; 28:727-737. [PMID: 27458325 PMCID: PMC4957709 DOI: 10.1021/acs.chemmater.5b03528] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A series of ABC triblock copolypeptoids [i.e., poly(N-allyl glycine)-b-poly(N-methyl glycine)-b-poly(N-decyl glycine) (AMD)] with well-defined structure and varying composition have been synthesized by sequential primary amine-initiated ring-opening polymerization of the corresponding N-substituted N-carboxyanhydride monomers (Al-NCA, Me-NCA, and De-NCA). The ABC block copolypeptoids undergo sol-to-gel transitions with increasing temperature in water and biological media at low concentrations (2.5-10 wt %). The sol-gel transition is rapid and fully reversible with a narrow transition window, evidenced by the rheological measurements. The gelation temperature (Tgel) and mechanical stiffness of the hydrogels are highly tunable: Tgel in the 26.2-60.0 °C range, the storage modulus (G') and Young's modulus (E) in the 0.2-780 Pa and 0.5-2346 Pa range, respectively, at the physiological temperature (37 °C) can be readily accessed by controlling the block copolypeptoid composition and the polymer solution concentration. The hydrogel is injectable through a 24 gauge syringe needle and maintains their shape upon in contact with surfaces or water baths that are kept above the sol-gel transition temperature. The hydrogels exhibit minimal cytotoxicity toward human adipose derived stem cells (hASCs), evidenced from both alamarBlue and PicoGreen assays. Furthermore, quantitative PCR analysis revealed significant up-regulation of the Col2a1 gene and down-regulation of ANGPT1 gene, suggesting that the hydrogel exhibit biological activity in inducing chondrogenesis of hASCs. It was also demonstrated that the hydrogel can be used to quantitatively encapsulate water-soluble enzymes (e.g., horseradish peroxidase) by manipulating the sol-gel transition. The enzymatic activity of HRP remain unperturbed after encapsulation at 37 °C for up to 7 d, suggesting that the hydrogel does not adversely affect the enzyme structure and thereby the enzymatic activity. These results suggest that the polypeptoid hydrogel a promising synthetic platform for tissue engineering or protein storage applications.
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Affiliation(s)
- Sunting Xuan
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Chang-Uk Lee
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Cong Chen
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Andrew B. Doyle
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Yueheng Zhang
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
| | - Li Guo
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Vijay T. John
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
| | - Daniel Hayes
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Donghui Zhang
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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Development of crosslinked methylcellulose hydrogels for soft tissue augmentation using an ammonium persulfate-ascorbic acid redox system. Carbohydr Polym 2015; 134:497-507. [DOI: 10.1016/j.carbpol.2015.07.101] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 07/28/2015] [Accepted: 07/31/2015] [Indexed: 12/25/2022]
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15
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Teodorescu M, Andrei M, Turturicǎ G, Stǎnescu PO, Zaharia A, Sârbu A. Novel Thermoreversible Injectable Hydrogel Formulations Based on Sodium Alginate and Poly(N-Isopropylacrylamide). INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1030646] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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16
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Alexander A, Ajazuddin, Khan J, Saraf S, Saraf S. Polyethylene glycol (PEG)–Poly(N-isopropylacrylamide) (PNIPAAm) based thermosensitive injectable hydrogels for biomedical applications. Eur J Pharm Biopharm 2014; 88:575-85. [DOI: 10.1016/j.ejpb.2014.07.005] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 07/06/2014] [Accepted: 07/08/2014] [Indexed: 01/01/2023]
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17
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Saini A, Chauhan VS. Self-assembling properties of peptides derived from TDP-43 C-terminal fragment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3845-3856. [PMID: 24559403 DOI: 10.1021/la404710w] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two highly fibrillogenic peptide sequences (MNFGAFSINP and EDLIIKGISV) were previously reported in the C-terminal fragment (CTF) of TDP-43 (220-414), a protein recently implicated in neuro-degenerative diseases such as amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD-U). It was observed that the sequences MNFGAFS and EDLIIKG harbor their respective fibrillogenic domains. Here, the self-assembling properties of peptides obtained by systematic deletion of residues from these two sequences were investigated with the help of light scattering, thioflavin T fluorescence, transmission electron microscopy, and circular dichroism spectroscopy. It was found that the pentapeptide NFGAF and the tetrapeptide DLII are the shortest fibrillogenic sequences from MNFGAFS and EDLIIKG, respectively. Structure function studies revealed that self-assembly of the peptides is largely governed by hydrophobic interactions. Both NFGAF and DLII formed hydrogels based on a complex fibrillar network, at relatively low concentrations, and of remarkable strength and stability. Of particular interest was DLII, a rare aliphatic tetrapeptide that formed a hydrogel at a concentration of 1 mg/mL in less than an hour. Interestingly, various other tetrapeptides based on DLII (YLII, KLII, NLII, and LIID) also formed hydrogels of comparable physical properties, suggesting that an amphipathic peptide design based on the hydrophobic LII motif and a single residue polar terminus is highly favorable for hydrogelation. Peptides discovered in this study, especially DLII and its variants, are some of the shortest ever reported to show such structural and functional features, suggesting that they can be useful templates for the design of peptide-based soft materials.
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Affiliation(s)
- Akash Saini
- International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India
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18
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Hu Y, Catchmark JM, Vogler EA. Factors Impacting the Formation of Sphere-Like Bacterial Cellulose Particles and Their Biocompatibility for Human Osteoblast Growth. Biomacromolecules 2013; 14:3444-52. [DOI: 10.1021/bm400744a] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Hu
- Center
for Human Tissues and Organs Degeneration and Shenzhen Key Laboratory of Marine Biomedical Materials, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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19
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Poly(N-isopropylacrylamide-co-N-t-butylacrylamide)-block-poly(ethylene glycol)-block-poly(N-isopropylacrylamide-co-N-t-butylacrylamide) triblock copolymers: synthesis and thermogelation properties of aqueous solutions. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-2994-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Amini AR, Laurencin CT, Nukavarapu SP. Bone tissue engineering: recent advances and challenges. Crit Rev Biomed Eng 2013; 40:363-408. [PMID: 23339648 DOI: 10.1615/critrevbiomedeng.v40.i5.10] [Citation(s) in RCA: 1314] [Impact Index Per Article: 119.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The worldwide incidence of bone disorders and conditions has trended steeply upward and is expected to double by 2020, especially in populations where aging is coupled with increased obesity and poor physical activity. Engineered bone tissue has been viewed as a potential alternative to the conventional use of bone grafts, due to their limitless supply and no disease transmission. However, bone tissue engineering practices have not proceeded to clinical practice due to several limitations or challenges. Bone tissue engineering aims to induce new functional bone regeneration via the synergistic combination of biomaterials, cells, and factor therapy. In this review, we discuss the fundamentals of bone tissue engineering, highlighting the current state of this field. Further, we review the recent advances of biomaterial and cell-based research, as well as approaches used to enhance bone regeneration. Specifically, we discuss widely investigated biomaterial scaffolds, micro- and nano-structural properties of these scaffolds, and the incorporation of biomimetic properties and/or growth factors. In addition, we examine various cellular approaches, including the use of mesenchymal stem cells (MSCs), embryonic stem cells (ESCs), adult stem cells, induced pluripotent stem cells (iPSCs), and platelet-rich plasma (PRP), and their clinical application strengths and limitations. We conclude by overviewing the challenges that face the bone tissue engineering field, such as the lack of sufficient vascularization at the defect site, and the research aimed at functional bone tissue engineering. These challenges will drive future research in the field.
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Affiliation(s)
- Ami R Amini
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, CT, USA
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21
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Preparation of injectable and thermoresponsive hydrogel based on penta-block copolymer with improved sol stability and mechanical properties. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Bongio M, van den Beucken JJJP, Leeuwenburgh SCG, Jansen JA. Preclinical evaluation of injectable bone substitute materials. J Tissue Eng Regen Med 2012; 9:191-209. [DOI: 10.1002/term.1637] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 07/25/2012] [Accepted: 09/27/2012] [Indexed: 12/15/2022]
Affiliation(s)
- Matilde Bongio
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
| | | | | | - John A. Jansen
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
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23
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Coutu JM, Fatimi A, Berrahmoune S, Soulez G, Lerouge S. A new radiopaque embolizing agent for the treatment of endoleaks after endovascular repair: Influence of contrast agent on chitosan thermogel properties. J Biomed Mater Res B Appl Biomater 2012; 101:153-61. [DOI: 10.1002/jbm.b.32828] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 06/26/2012] [Accepted: 08/20/2012] [Indexed: 11/08/2022]
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24
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Patenaude M, Hoare T. Injectable, Degradable Thermoresponsive Poly( N-isopropylacrylamide) Hydrogels. ACS Macro Lett 2012; 1:409-413. [PMID: 35578512 DOI: 10.1021/mz200121k] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Degradable, covalently in situ gelling analogues of thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) hydrogels have been designed by mixing aldehyde and hydrazide-functionalized PNIPAM oligomers with molecular weights below the renal cutoff. Co-extrusion of the reactive polymer solutions through a double-barreled syringe facilitates rapid gel formation within seconds. The resulting hydrazone cross-links hydrolytically degrade over several weeks into low molecular weight oligomers. The characteristic reversible thermoresponsive swelling-deswelling phase transition of PNIPAM hydrogels is demonstrated. Furthermore, both in vitro and in vivo toxicity assays indicated that the hydrogel as well as the precursor polymers/degradation products were nontoxic at biomedically relevant concentrations. This chemistry may thus represent a general approach for preparing covalently cross-linked, synthetic polymer hydrogels that are both injectable and degradable.
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Affiliation(s)
- Mathew Patenaude
- Department of Chemical
Engineering, McMaster University, 1280 Main Street
West, Hamilton, Ontario, Canada L8S 4L7
| | - Todd Hoare
- Department of Chemical
Engineering, McMaster University, 1280 Main Street
West, Hamilton, Ontario, Canada L8S 4L7
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Hilborn J. In vivo
injectable gels for tissue repair. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2011; 3:589-606. [DOI: 10.1002/wnan.91] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jons Hilborn
- Department of Materials Chemistry, Uppsala University, Uppsala 75121, Sweden
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26
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Hamcerencu M, Desbrieres J, Khoukh A, Popa M, Riess G. Thermodynamic investigation of thermoresponsive xanthan-poly (N
-isopropylacrylamide) hydrogels. POLYM INT 2011. [DOI: 10.1002/pi.3113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Alzari V, Nuvoli D, Scognamillo S, Piccinini M, Gioffredi E, Malucelli G, Marceddu S, Sechi M, Sanna V, Mariani A. Graphene-containing thermoresponsive nanocomposite hydrogels of poly(N-isopropylacrylamide) prepared by frontal polymerization. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11076d] [Citation(s) in RCA: 181] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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28
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Hydrogel Synthesis Directed Toward Tissue Engineering: Impact of Reaction Condition on Structural Parameters and Macroscopic Properties of Xerogels. INT J POLYM SCI 2011. [DOI: 10.1155/2011/343062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The existence of correlation and functional relationships between reaction conditions (concentrations of crosslinker, monomer and initiator, and neutralization degree of monomer), primary structural parameters (crosslinking density of network, average molar mass between crosslinks, and distance between macromolecular chains), and macroscopic properties (equilibrium swelling degree and xerogel density) of the synthesized xerogels which are important for application in tissue engineering is investigated. The structurally different xerogels samples of poly(acrylic acid), poly(methacrylic acid), and poly(acrylic acid-g-gelatin) were synthesized by applying different methods of polymerization: crosslinking polymerization, crosslinking polymerization in high concentrated aqueous solution, and crosslinking graft polymerization. The values of primary structural parameters and macroscopic properties were determined for the synthesized xerogels samples. For all of the investigated methods of polymerization, an existence of empirical power function of the dependence of primary structural parameters and macroscopic properties on the reaction conditions was established. The scaling laws between primary structural parameters and macroscopic properties on average molar mass between crosslinks were established. It is shown that scaling exponent is independent from the type of monomer and other reaction conditions within the same polymerization method. The physicochemical model that could be used for xerogel synthesis with predetermined macroscopic properties was suggested.
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29
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Gkioni K, Leeuwenburgh SCG, Douglas TEL, Mikos AG, Jansen JA. Mineralization of hydrogels for bone regeneration. TISSUE ENGINEERING PART B-REVIEWS 2010; 16:577-85. [PMID: 20735319 DOI: 10.1089/ten.teb.2010.0462] [Citation(s) in RCA: 174] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Hydrogels are an important class of highly hydrated polymers that are widely investigated for potential use in soft tissue engineering. Generally, however, hydrogels lack the ability to mineralize, preventing the formation of chemical bonds with hard tissues such as bone. A recent trend in tissue engineering involves the development of hydrogels that possess the capacity to mineralize. The strategy that has attracted most interest has been the incorporation of inorganic phases such as calcium phosphate ceramics and bioglasses into hydrogel matrices. These inorganic particles act as nucleation sites that enable further mineralization, thus improving the mechanical properties of the composite material. A second route to create nucleation sites for calcification of hydrogels involves the use of features from the physiological mineralization process. Examples of these biomimetic mineralization strategies include (1) soaking of hydrogels in solutions that are saturated with respect to calcium phosphate, (2) incorporation of enzymes that catalyze deposition of bone mineral, and (3) incorporation of synthetic analogues to matrix vesicles that are the initial sites of biomineralization. Functionalization of the polymeric hydrogel backbone with negatively charged groups is a third mechanism to promote mineralization in otherwise inert hydrogels. This review summarizes the main strategies that have been developed in the past decade to calcify hydrogel matrices and render these hydrogels suitable for applications in bone regeneration.
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Affiliation(s)
- Katerina Gkioni
- Department of Biomaterials, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
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30
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Thermogelation properties of poly(N-isopropylacrylamide) – block – poly(ethylene glycol) – block – poly(N-isopropylacrylamide) triblock copolymer aqueous solutions. REACT FUNCT POLYM 2010. [DOI: 10.1016/j.reactfunctpolym.2010.07.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Jagur-Grodzinski J. Polymeric gels and hydrogels for biomedical and pharmaceutical applications. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1504] [Citation(s) in RCA: 280] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Zhou Z, Yang D, Nie J, Ren Y, Cui F. Injectable Poly(ethylene glycol) Dimethacrylate-based Hydrogels with Hydroxyapatite. J BIOACT COMPAT POL 2009. [DOI: 10.1177/0883911509341774] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Injectable hydrogels are attractive materials for tissue engineering as they provide fast reaction rates, low heat release, and biocompatibility for cell proliferation and permanent interface with surrounding tissue. A series of injectable poly(ethylene glycol) dimethacrylate (PEGDMA) hydrogels with four different weight fractions of hydroxyapatite (HA) particles were prepared and thermal and mechanical properties evaluated. The cytocompatibility was assessed by examining the viability and morphology of human mesenchymal stem cells (hMSCs) seeded on the hydrogels. The in situ crosslink process displayed a vast decrease in the maximal temperature and an increase in the maximal temperature time. Cytocompatibility evaluation by MTT assay, scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM) showed that the cells on the composite hydrogels possessed better viability and adherence than the hydrogels without HA. The results indicated that composite hydrogels have potential as injectable materials for tissue engineering application.
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Affiliation(s)
- Ziyou Zhou
- State Key Laboratory of Chemical Resource Engineering Key Lab. of Beijing City on Preparation and Processing of Novel Polymer Materials; College of Material Science and Engineering Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Dongzhi Yang
- State Key Laboratory of Chemical Resource Engineering Key Lab. of Beijing City on Preparation and Processing of Novel Polymer Materials; College of Material Science and Engineering Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jun Nie
- State Key Laboratory of Chemical Resource Engineering Key Lab. of Beijing City on Preparation and Processing of Novel Polymer Materials; College of Material Science and Engineering Beijing University of Chemical Technology, Beijing, 100029, P. R. China,
| | - Yongjuan Ren
- Department of Materials Science and Engineering Tsinghua University, Beijing, 100084, P. R. China
| | - Fuzhai Cui
- Department of Materials Science and Engineering Tsinghua University, Beijing, 100084, P. R. China
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33
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Aulin C, Foroughi F, Brown R, Hilborn J. Extracellular matrix-polymer hybrid materials produced in a pulsed-flow bioreactor system. J Tissue Eng Regen Med 2009; 3:188-95. [DOI: 10.1002/term.152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Wu DQ, Qiu F, Wang T, Jiang XJ, Zhang XZ, Zhuo RX. Toward the development of partially biodegradable and injectable thermoresponsive hydrogels for potential biomedical applications. ACS APPLIED MATERIALS & INTERFACES 2009; 1:319-327. [PMID: 20353219 DOI: 10.1021/am8000456] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A series of hydrogels containing a biodegradable dextran (Dex) chain grafted with a hydrophobic poly(-caprolactone)-2-hydroxylethyl methacrylate (PCL-HEMA) chain and a thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) chain were synthesized. The molecular weight of PCL-HEMA was determined by gel permeation chromatography, and the inner morphology of the hydrogel was observed by scanning electron microscopy. The release profiles from the hydrogels were investigated using bovine serum albumen as a model drug. It was found that the release behavior could be adjusted by varying the composition of the hydrogel. In vitro cytotoxicity studies of the hydrogels showed that the copolymer Dex-PCL-HEMA/PNIPAAm exhibited low cytotoxicity. The in vivo degradation and histological studies demonstrated that the hydrogels had good biocompatibility and were promising for use as an injectable polymeric scaffold for tissue engineering applications.
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Affiliation(s)
- De-Qun Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
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35
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In situ gel forming stereocomplex composed of four-arm PEG-PDLA and PEG-PLLA block copolymers. Macromol Res 2008. [DOI: 10.1007/bf03218584] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Hu X, Zhou J, Zhang N, Tan H, Gao C. Preparation and properties of an injectable scaffold of poly(lactic-co-glycolic acid) microparticles/chitosan hydrogel. J Mech Behav Biomed Mater 2008; 1:352-9. [DOI: 10.1016/j.jmbbm.2008.02.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Revised: 01/31/2008] [Accepted: 02/01/2008] [Indexed: 11/25/2022]
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37
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Wu DQ, Wang T, Lu B, Xu XD, Cheng SX, Jiang XJ, Zhang XZ, Zhuo RX. Fabrication of supramolecular hydrogels for drug delivery and stem cell encapsulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:10306-10312. [PMID: 18680318 DOI: 10.1021/la8006876] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Supramolecular hydrogels self-assembled by alpha-cyclodextrin and methoxypolyethylene glycol-poly(caprolactone)-(dodecanedioic acid)-poly(caprolactone)-methoxypolyethylene glycol (MPEG-PCL-MPEG) triblock polymers were prepared and characterized in vitro and in vivo. The sustained release of dextran-fluorescein isothiocyanate (FITC) from the hydrogels lasted for more than 1 month, which indicated that the hydrogels were promising for controlled drug delivery. ECV304 cells and marrow mesenchymal stem cells (MSC) were encapsulated and cultured in the hydrogels, during which the morphologies of the cells could be kept. The in vitro cell viability studies and the in vivo histological studies demonstrated that the hydrogels were non-cytotoxic and biocompatible, which indicated that the hydrogels prepared were promising candidates as injectable scaffolds for tissue engineering applications.
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Affiliation(s)
- De-Qun Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, China
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38
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39
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Khan Y, Yaszemski MJ, Mikos AG, Laurencin CT. Tissue engineering of bone: material and matrix considerations. J Bone Joint Surg Am 2008; 90 Suppl 1:36-42. [PMID: 18292355 DOI: 10.2106/jbjs.g.01260] [Citation(s) in RCA: 299] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
When the normal physiologic reaction to fracture does not occur, such as in fracture nonunions or large-scale traumatic bone injury, surgical intervention is warranted. Autografts and allografts represent current strategies for surgical intervention and subsequent bone repair, but each possesses limitations, such as donor-site morbidity with the use of autograft and the risk of disease transmission with the use of allograft. Synthetic bone-graft substitutes, developed in an effort to overcome the inherent limitations of autograft and allograft, represent an alternative strategy. These synthetic graft substitutes, or matrices, are formed from a variety of materials, including natural and synthetic polymers, ceramics, and composites, that are designed to mimic the three-dimensional characteristics of autograft tissue while maintaining viable cell populations. Matrices also act as delivery vehicles for factors, antibiotics, and chemotherapeutic agents, depending on the nature of the injury to be repaired. This intersection of matrices, cells, and therapeutic molecules has collectively been termed tissue engineering. Depending on the specific application of the matrix, certain materials may be more or less well suited to the final structure; these include polymers, ceramics, and composites of the two. Each category is represented by matrices that can form either solid preformed structures or injectable forms that harden in situ. This article discusses the myriad design considerations that are relevant to successful bone repair with tissue-engineered matrices and provides an overview of several manufacturing techniques that allow for the actualization of critical design parameters.
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Affiliation(s)
- Yusuf Khan
- University of Virginia School of Medicine, 400 Ray C. Hunt Drive, Charlottesville, VA 22908, USA
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40
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Abstract
Injectable polymers are attractive materials for tissue augmentation or replacement. Thermosensitive hydrogels, especially poly(N-isopropylacryamide), have been investigated for these applications to exploit the lower critical solution temperature (LCST) which falls between room and body temperatures. Some practical limitations to the material are the load-bearing capabilities and the ability to bond to the host tissue. In this work, we evaluated a novel, injectable apatite-forming material system: poly(N-isopropylacryamide)-co-poly(ethyleneglycol) dimethacrylate, with the addition of tri-methacryloxypropyltrimethoxysilane (MPS). We have previously reported that MPS concentration permits the material system to be tuned to different compressive moduli ranging from 50-700 kPa without altering the LCST of the material. Here, we explore the apatite formation of this material system in protein-free and protein-containing SBF. The MPS-containing hydrogel system exhibited apatite formation throughout the gel thickness. The apatite formation was inhibited by the presence of proteins. This mechanism is likely controlled by the silanol groups (Si-OH) in MPS, which provided attachment sites for calcium and initiated mineral dissolution from the simulated biological environments. The challenge of this material system is to balance the network-forming and modulus-enhancing MPS while maintaining an injectable hydrogel for potential tissue regeneration.
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Affiliation(s)
- Emily Ho
- Department of Materials Science and Engineering, College of Engineering, Drexel University,3201 Chestnut Street, Philadelphia, Pennsylvania 19104,USA
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