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Abdollahi Baghban S, Ebrahimi M, Bagheri-Khoulenjani S, Khorasani M. A highly efficient microwave-assisted synthesis of an LED-curable methacrylated gelatin for bio applications. RSC Adv 2021; 11:14996-15009. [PMID: 35424032 PMCID: PMC8697925 DOI: 10.1039/d1ra01269j] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/10/2021] [Indexed: 12/14/2022] Open
Abstract
This study deals with the development of an LED-curable methacrylated gelatin (GelMA) synthesis via microwave (MW) irradiation with a reaction and purification time-, energy-, and methacrylation reagent-saving approach. To investigate the efficiency of MW irradiation in GelMA synthesis, characteristics of the GelMAs prepared by using glycidyl methacrylate (GMA) or methacrylic anhydride (MA) via the MW-assisted (MWA) method were compared comprehensively with those synthesized via the conventional heating method. Moreover, MWA reaction conditions were optimized in terms of methacrylation reagent concentrations (C), reaction time (t), and MW power (P). Characterization and assessment of the GelMAs were conducted with 1H NMR, FT-IR, and Raman spectroscopy along with physical-mechanical, thermal, and hydrophilicity analysis. The results demonstrated that the MWA synthesized GMA-GelMA hydrogels were possessed of increased methacrylation degree (MD), gel fraction (GF), tensile strength (TS), elongation at break (EB), glass transition temperature (T g), and water contact angle (WCA) as well as decreased swelling degree (SD) values in comparison to those of MA-GelMA and GMA-GelMA hydrogels prepared via the MWA and conventional method, respectively. Enhanced properties of the MWA synthesized GMA-hydrogels suggested an effective methacryloyl conjugation leading to a greater amount of covalent crosslinking density justified by the dipolar moment calculations. Optimal GMA C, t, P, and purification time for a highly crosslinked GelMA hydrogel (MD: 96.1%, GF: 98.3%, SD: 10.11%, TS: 6.7 MPa, EB: 175.2%, T g: 75.34 °C, and WCA: 72.22°) were found to be a 5 times molar excess over the primary amine groups of gelatin, 5 min, 500 W, and 24 h, respectively. Thus, the optimized MW conditions offer a promising green method to prepare GelMAs for bio applications.
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Affiliation(s)
- Sahar Abdollahi Baghban
- Department of Polymer and Color Engineering, Amirkabir University of Technology 350 Hafez Ave. 15875-4413 Tehran Iran
| | - Morteza Ebrahimi
- Department of Polymer and Color Engineering, Amirkabir University of Technology 350 Hafez Ave. 15875-4413 Tehran Iran
| | - Shadab Bagheri-Khoulenjani
- Department of Polymer and Color Engineering, Amirkabir University of Technology 350 Hafez Ave. 15875-4413 Tehran Iran
| | - Manoucher Khorasani
- Department of Polymer and Color Engineering, Amirkabir University of Technology 350 Hafez Ave. 15875-4413 Tehran Iran
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Khurana B, Gierlich P, Meindl A, Gomes-da-Silva LC, Senge MO. Hydrogels: soft matters in photomedicine. Photochem Photobiol Sci 2019; 18:2613-2656. [PMID: 31460568 DOI: 10.1039/c9pp00221a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Photodynamic therapy (PDT), a shining beacon in the realm of photomedicine, is a non-invasive technique that utilizes dye-based photosensitizers (PSs) in conjunction with light and oxygen to produce reactive oxygen species to combat malignant tissues and infectious microorganisms. Yet, for PDT to become a common, routine therapy, it is still necessary to overcome limitations such as photosensitizer solubility, long-term side effects (e.g., photosensitivity) and to develop safe, biocompatible and target-specific formulations. Polymer based drug delivery platforms are an effective strategy for the delivery of PSs for PDT applications. Among them, hydrogels and 3D polymer scaffolds with the ability to swell in aqueous media have been deeply investigated. Particularly, hydrogel-based formulations present real potential to fulfill all requirements of an ideal PDT platform by overcoming the solubility issues, while improving the selectivity and targeting drawbacks of the PSs alone. In this perspective, we summarize the use of hydrogels as carrier systems of PSs to enhance the effectiveness of PDT against infections and cancer. Their potential in environmental and biomedical applications, such as tissue engineering photoremediation and photochemistry, is also discussed.
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Affiliation(s)
- Bhavya Khurana
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland.
| | - Piotr Gierlich
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland. and CQC, Coimbra Chemistry Department, University of Coimbra, Coimbra, Portugal
| | - Alina Meindl
- Physik Department E20, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | | | - Mathias O Senge
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St James's Hospital, Dublin 8, Ireland. and Physik Department E20, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany and Institute for Advanced Study (TUM-IAS), Technische Universität München, Lichtenberg-Str. 2a, 85748 Garching, Germany
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Jahan I, George E, Saxena N, Sen S. Silver-Nanoparticle-Entrapped Soft GelMA Gels as Prospective Scaffolds for Wound Healing. ACS APPLIED BIO MATERIALS 2019; 2:1802-1814. [DOI: 10.1021/acsabm.8b00663] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Pérez-Ibarbia L, Majdanski T, Schubert S, Windhab N, Schubert US. Safety and regulatory review of dyes commonly used as excipients in pharmaceutical and nutraceutical applications. Eur J Pharm Sci 2016; 93:264-73. [DOI: 10.1016/j.ejps.2016.08.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/20/2016] [Accepted: 08/11/2016] [Indexed: 10/21/2022]
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Yang B, Yao F, Hao T, Fang W, Ye L, Zhang Y, Wang Y, Li J, Wang C. Development of Electrically Conductive Double-Network Hydrogels via One-Step Facile Strategy for Cardiac Tissue Engineering. Adv Healthc Mater 2016; 5:474-88. [PMID: 26626543 DOI: 10.1002/adhm.201500520] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/21/2015] [Indexed: 12/19/2022]
Abstract
Cardiac tissue engineering is an effective method to treat the myocardial infarction. However, the lack of electrical conductivity of biomaterials limits their applications. In this work, a homogeneous electronically conductive double network (HEDN) hydrogel via one-step facile strategy is developed, consisting of a rigid/hydrophobic/conductive network of chemical crosslinked poly(thiophene-3-acetic acid) (PTAA) and a flexible/hydrophilic/biocompatible network of photo-crosslinking methacrylated aminated gelatin (MAAG). Results suggest that the swelling, mechanical, and conductive properties of HEDN hydrogel can be modulated via adjusting the ratio of PTAA network to MAAG network. HEDN hydrogel has Young's moduli ranging from 22.7 to 493.1 kPa, and its conductivity (≈10(-4) S cm(-1)) falls in the range of reported conductivities for native myocardium tissue. To assess their biological activity, the brown adipose-derived stem cells (BADSCs) are seeded on the surface of HEDN hydrogel with or without electrical stimulation. Our data show that the HEDN hydrogel can support the survival and proliferation of BADSCs, and that it can improve the cardiac differentiation efficiency of BADSCs and upregulate the expression of connexin 43. Moreover, electrical stimulation can further improve this effect. Overall, it is concluded that the HEDN hydrogel may represent an ideal scaffold for cardiac tissue engineering.
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Affiliation(s)
- Boguang Yang
- Department of Advanced Interdisciplinary Studies; Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Sciences; Beijing 100850 China
- Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; No. 92, Weijin Road Tianjin 300072 China
| | - Fanglian Yao
- Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; No. 92, Weijin Road Tianjin 300072 China
| | - Tong Hao
- Department of Advanced Interdisciplinary Studies; Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Sciences; Beijing 100850 China
| | - Wancai Fang
- Department of Advanced Interdisciplinary Studies; Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Sciences; Beijing 100850 China
- Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; No. 92, Weijin Road Tianjin 300072 China
| | - Lei Ye
- Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; No. 92, Weijin Road Tianjin 300072 China
| | - Yabin Zhang
- Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education; School of Chemical Engineering and Technology; Tianjin University; No. 92, Weijin Road Tianjin 300072 China
| | - Yan Wang
- Department of Advanced Interdisciplinary Studies; Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Sciences; Beijing 100850 China
| | - Junjie Li
- Department of Advanced Interdisciplinary Studies; Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Sciences; Beijing 100850 China
| | - Changyong Wang
- Department of Advanced Interdisciplinary Studies; Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Sciences; Beijing 100850 China
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Lee BH, Shirahama H, Cho NJ, Tan LP. Efficient and controllable synthesis of highly substituted gelatin methacrylamide for mechanically stiff hydrogels. RSC Adv 2015. [DOI: 10.1039/c5ra22028a] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient and controllable synthesis method for gelatin methacrylamide is described. By sequential loading of methacrylic anhydride (MAA) after pH adjustment in an alkaline buffer, nearly complete substitution is achieved with small use of MAA.
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Affiliation(s)
- Bae Hoon Lee
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
| | - Hitomi Shirahama
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
| | - Nam-Joon Cho
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
| | - Lay Poh Tan
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore 639798
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Nakayama Y, Tsujinaka T. Acceleration of robust “biotube” vascular graft fabrication by in-body tissue architecture technology using a novel eosin Y-releasing mold. J Biomed Mater Res B Appl Biomater 2013; 102:231-8. [DOI: 10.1002/jbm.b.32999] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 03/28/2013] [Accepted: 06/06/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Yasuhide Nakayama
- Division of Medical Engineering and Materials; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishiro-dai, Suita Osaka 565-8565 Japan
| | - Takahiro Tsujinaka
- Division of Medical Engineering and Materials; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishiro-dai, Suita Osaka 565-8565 Japan
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Hoch E, Schuh C, Hirth T, Tovar GEM, Borchers K. Stiff gelatin hydrogels can be photo-chemically synthesized from low viscous gelatin solutions using molecularly functionalized gelatin with a high degree of methacrylation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2607-2617. [PMID: 22890515 DOI: 10.1007/s10856-012-4731-2] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 07/23/2012] [Indexed: 06/01/2023]
Abstract
Gelatin is a very promising matrix material for in vitro cell culture and tissue engineering, e.g. due to its native RGD content. For the generation of medical soft tissue implants chemical modification of gelatin improves the mechanical properties of gelatin hydrogels and the viscous behavior of gelatin solutions for liquid handling. We present a systematic study on the influence of high degrees of methacrylation on the properties of gelatin solutions and photo-chemically crosslinked hydrogels. Changes from shear thinning to shear thickening behavior of gelatin solutions were observed depending on mass fraction and degree of methacrylation. Degrees of swelling of crosslinked hydrogels ranged from 194 to 770 % and storage moduli G' from 368 to 5 kPa, comparable to various natural tissues including several types of cartilage. Crosslinked gels proofed to be cytocompatible according to extract testings based on DIN ISO 10933-5 and in contact with porcine chondrocytes.
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Affiliation(s)
- Eva Hoch
- Institute for Interfacial Engineering IGVT, University of Stuttgart, Stuttgart, Germany
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Amini AA, Nair LS. Enzymatically cross-linked injectable gelatin gel as osteoblast delivery vehicle. J BIOACT COMPAT POL 2012. [DOI: 10.1177/0883911512444713] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Injectable and degradable hydrogels are potential candidates as cell delivery vehicles for the regeneration of osseous defects. We evaluated the potential of injectable enzymatically cross-linked gelatin gel as an osteoblast delivery vehicle using murine preosteoblast MC3T3-E1 cells. Injectable hydrogels were prepared by enzymatic cross-linking of the phenol derivatives of gelatin (tyramine-modified) in the presence of hydrogen peroxide (H2O2) and horseradish peroxidase. The effect of gelatin concentration on gel morphology and in supporting the adhesion and spreading of encapsulated MC3T3-E1 cells, activation of intercellular signaling in MC3T3-E1 cells by extracellular signal-regulated kinase phosphorylation, β-catenin and Runx2 was evaluated. Both tyramine-modified and unmodified gelatins as well as gelatin gels did not activate intercellular signaling pathways in MC3T3-E1 cells. The encapsulated cells in gelatin gel showed extracellular signal-regulated kinase phosphorylation and active β-catenin expression in the presence of inductive molecules such as insulin and LiCl. The gelatin gels formed from 10 to 25 mg/mL tyramine-modified gelatin supported the adhesion, spreading, and three-dimensional growth of MC3T3-E1 cells. However, the lack of activation of intercellular signaling in the gelatin gel indicates the need to add exogenous bioactive molecules to modulate the osteogenic functions of the encapsulated cells.
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Affiliation(s)
- Ashley A Amini
- School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Lakshmi S Nair
- Department of Orthopaedic Surgery, Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT, USA
- Department of Chemical, Materials and Biomolecular Engineering, Biomedical Engineering Program, Institute of Material Science, University of Connecticut, Farmington, CT, USA
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Preparation of well-defined poly(ether-ester) macromers: photogelation and biodegradability. Acta Biomater 2011; 7:1496-503. [PMID: 21095246 DOI: 10.1016/j.actbio.2010.11.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 11/12/2010] [Accepted: 11/17/2010] [Indexed: 11/23/2022]
Abstract
Two series of poly(ether-ester)-based bis-functional macromers terminated with acrylate groups and a well-defined number of ester bonds were synthesized. One series had a chain of 1, 3 or 5 ester bonds at both ends of the central poly(ethylene glycol) block (molecular weight, about 1000), while the other had an alternating structure of oligo(ethylene glycol) each of them linked to two ester bonds, in which 6 or 10 ester bonds were incorporated equally in the macromer molecules and the total molecular weight was adjusted by about 1000. Irradiation of all poly(ether-ester) macromers mixed with camphorquinone resulted in the formation of gels. Gel yield increased and hydrophilic properties of the gels produced decreased with irradiation time. The elastic modulus of the gels decreased with the number of ester bonds. Upon incubation in a PBS solution (pH 8.04), all gels were gradually degraded with time. At 3 weeks of incubation, the degradation ratio increased linearly with the number of ester bonds per unit of molecular weight of the macromers. The order of in vivo degradation rates determined from weight loss was similar to that of the in vitro study. Thus, these poly(ether-ester) macromers may be useful for biodegradable biomaterials or tissue engineering scaffolds.
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