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Kim J, Park J, Choe G, Jeong SI, Kim HS, Lee JY. A Gelatin/Alginate Double Network Hydrogel Nerve Guidance Conduit Fabricated by a Chemical-Free Gamma Radiation for Peripheral Nerve Regeneration. Adv Healthc Mater 2024; 13:e2400142. [PMID: 38566357 DOI: 10.1002/adhm.202400142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Indexed: 04/04/2024]
Abstract
Nerve guidance conduits (NGCs) are widely developed using various materials for the functional repair of injured or diseased peripheral nerves. Especially, hydrogels are considered highly suitable for the fabrication of NGCs due to their beneficial tissue-mimicking characteristics (e.g., high water content, softness, and porosity). However, the practical applications of hydrogel-based NGCs are hindered due to their poor mechanical properties and complicated fabrication processes. To bridge this gap, a novel double-network (DN) hydrogel using alginate and gelatin by a two-step crosslinking process involving chemical-free gamma irradiation and ionic crosslinking, is developed. DN hydrogels (1% alginate and 15% gelatin), crosslinked with 30 kGy gamma irradiation and barium ions, exhibit substantially improved mechanical properties, including tensile strength, elastic modulus, and fracture stain, compared to single network (SN) gelatin hydrogels. Additionally, the DN hydrogel NGC exhibits excellent kink resistance, mechanical stability to successive compression, suture retention, and enzymatic degradability. In vivo studies with a sciatic defect rat model indicate substantially improved nerve function recovery with the DN hydrogel NGC compared to SN gelatin and commercial silicone NGCs, as confirm footprint analysis, electromyography, and muscle weight measurement. Histological examination reveals that, in the DN NGC group, the expression of Schwann cell and neuronal markers, myelin sheath, and exon diameter are superior to the other controls. Furthermore, the DN NGC group demonstrates increased muscle fiber formation and reduced fibrotic scarring. These findings suggest that the mechanically robust, degradable, and biocompatible DN hydrogel NGC can serve as a novel platform for peripheral nerve regeneration and other biomedical applications, such as implantable tissue constructs.
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Affiliation(s)
- Junghyun Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Junggeon Park
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Goeun Choe
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Sung-In Jeong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea
| | - Hyung-Seok Kim
- Department of Forensic Medicine, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Jae Young Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
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Schütte F, Mayr SG. Electron Beam-Modified Collagen Type I Fibers: Synthesis and Characterization of Mechanical Response. ACS Biomater Sci Eng 2024; 10:782-790. [PMID: 38262427 DOI: 10.1021/acsbiomaterials.3c01072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Ten MeV electron beam treatment facilitates a biomimetic introduction of cross-links in collagenous biopolymer systems, modifying their viscoelastic properties, mechanical stability, and swelling behavior. For reconstituted collagen type I fibers, electron-induced cross-linking opens up new perspectives regarding future biomedical applications in terms of tissue and ligament engineering. We demonstrate how electron irradiation affects stiffness both in low-strain regimes and in postyield regimes of biocompatible reconstituted rat tail collagen type I fibers. Stress-strain tests show a dose-dependent increase in modulus in the nonlinear elastic response, indicating a central role of induced cross-links in mechanical stability. Environmental scanning electron microscopy after fiber rupture reveals aligned distributed collagen fibril domains under the fiber surface for as-prepared fibers, accompanied by a ductile fracture behavior, whereas, in tensile tests imaged by light microscopy after 10 MeV electron treatment, isotropic network topologies are observed until the occurrence of a brittle type of rupture. Based on the biomimicry of the process, these findings might pave the way for a novel type of synthesis of tailored tendon or ligament substitutes.
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Affiliation(s)
- Friedrich Schütte
- Biocompatible and Bioactive Surfaces, Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318 Leipzig, Germany
- Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
| | - Stefan G Mayr
- Biocompatible and Bioactive Surfaces, Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318 Leipzig, Germany
- Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
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3
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A Simple Preparation Method of Gelatin Hydrogels Incorporating Cisplatin for Sustained Release. Pharmaceutics 2022; 14:pharmaceutics14122601. [PMID: 36559095 PMCID: PMC9786307 DOI: 10.3390/pharmaceutics14122601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
The objective of this study was to develop a new preparation method for cisplatin (CDDP)-incorporated gelatin hydrogels without using chemical crosslinking nor a vacuum heating instrument for dehydrothermal crosslinking. By simply mixing CDDP and gelatin, CDDP-crosslinked gelatin hydrogels (CCGH) were prepared. CDDP functions as a crosslinking agent of gelatin to form the gelatin hydrogel. Simultaneously, CDDP is incorporated into the gelatin hydrogel as a controlled release carrier. CDDP's in vitro and in vivo anticancer efficacy after incorporation into CCGH was evaluated. In the in vitro system, the CDDP was released gradually due to CCGH degradation with an initial burst release of approximately 16%. CDDP metal-coordinated with the degraded fragment of gelatin was released from CCGH with maintaining the anticancer activity. After intraperitoneal administration of CCGH, CDDP was detected in the blood circulation while its toxicity was low. Following intraperitoneal administration of CCGH in a murine peritoneal dissemination model of human gastric cancer MKN45-Luc cell line, the survival time was significantly prolonged compared with free CDDP solution. It is concluded that CCGH prepared by the CDDP-based crosslinking of gelatin is an excellent sustained release system of CDDP to achieve superior anticancer effects with minimal side effects compared with free CDDP solution.
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Elbalasy I, Wilharm N, Herchenhahn E, Konieczny R, Mayr SG, Schnauß J. From Strain Stiffening to Softening—Rheological Characterization of Keratins 8 and 18 Networks Crosslinked via Electron Irradiation. Polymers (Basel) 2022; 14:polym14030614. [PMID: 35160604 PMCID: PMC8838340 DOI: 10.3390/polym14030614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/21/2022] [Accepted: 01/28/2022] [Indexed: 02/01/2023] Open
Abstract
Networks of crosslinked keratin filaments are abundant in epithelial cells and tissues, providing resilience against mechanical forces and ensuring cellular integrity. Although studies of in vitro models of reconstituted keratin networks have revealed important mechanical aspects, the mechanical properties of crosslinked keratin structures remain poorly understood. Here, we exploited the power of electron beam irradiation (EBI) to crosslink in vitro networks of soft epithelial keratins 8 and 18 (k8–k18) filaments with different irradiation doses (30 kGy, 50 kGy, 80 kGy, 100 kGy, and 150 kGy). We combined bulk shear rheology with confocal microscopy to investigate the impact of crosslinking on the mechanical and structural properties of the resultant keratin gels. We found that irradiated keratin gels display higher linear elastic modulus than the unirradiated, entangled networks at all doses tested. However, at the high doses (80 kGy, 100 kGy, and 150 kGy), we observed a remarkable drop in the elastic modulus compared to 50 kGy. Intriguingly, the irradiation drastically changed the behavior for large, nonlinear deformations. While untreated keratin networks displayed a strong strain stiffening, increasing irradiation doses shifted the system to a strain softening behavior. In agreement with the rheological behavior in the linear regime, the confocal microscopy images revealed fully isotropic networks with high percolation in 30 kGy and 50 kGy-treated keratin samples, while irradiation with 100 kGy induced the formation of thick bundles and clusters. Our results demonstrate the impact of permanent crosslinking on k8–k18 mechanics and provide new insights into the potential contribution of intracellular covalent crosslinking to the loss of mechanical resilience in some human keratin diseases. These insights will also provide inspiration for the synthesis of new keratin-based biomaterials.
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Affiliation(s)
- Iman Elbalasy
- Peter-Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
- Faculty of Science, Cairo University, Giza 12613, Egypt
- Correspondence: (I.E.); (S.G.M.); (J.S.)
| | - Nils Wilharm
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany; (N.W.); (R.K.)
- Division of Surface Physics, Department of Physics and Earth Sciences, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
| | - Erik Herchenhahn
- Peter-Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
| | - Robert Konieczny
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany; (N.W.); (R.K.)
| | - Stefan G. Mayr
- Leibniz-Institut für Oberflächenmodifizierung e.V. (IOM), Permoserstr. 15, 04318 Leipzig, Germany; (N.W.); (R.K.)
- Division of Surface Physics, Department of Physics and Earth Sciences, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
- Correspondence: (I.E.); (S.G.M.); (J.S.)
| | - Jörg Schnauß
- Peter-Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
- Fraunhofer Institute for Cell Therapy and Immunology, Perlickstraße 1, 04103 Leipzig, Germany
- Unconventional Computing Lab, Department of Computer Science and Creative Technologies, UWE, Bristol BS16 1QY, UK
- Correspondence: (I.E.); (S.G.M.); (J.S.)
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Riedel S, Ward D, Kudláčková R, Mazur K, Bačáková L, Kerns JG, Allinson SL, Ashton L, Koniezcny R, Mayr SG, Douglas TEL. Electron Beam-Treated Enzymatically Mineralized Gelatin Hydrogels for Bone Tissue Engineering. J Funct Biomater 2021; 12:jfb12040057. [PMID: 34698221 PMCID: PMC8544455 DOI: 10.3390/jfb12040057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/25/2021] [Accepted: 09/30/2021] [Indexed: 12/27/2022] Open
Abstract
Biological hydrogels are highly promising materials for bone tissue engineering (BTE) due to their high biocompatibility and biomimetic characteristics. However, for advanced and customized BTE, precise tools for material stabilization and tuning material properties are desired while optimal mineralisation must be ensured. Therefore, reagent-free crosslinking techniques such as high energy electron beam treatment promise effective material modifications without formation of cytotoxic by-products. In the case of the hydrogel gelatin, electron beam crosslinking further induces thermal stability enabling biomedical application at physiological temperatures. In the case of enzymatic mineralisation, induced by Alkaline Phosphatase (ALP) and mediated by Calcium Glycerophosphate (CaGP), it is necessary to investigate if electron beam treatment before mineralisation has an influence on the enzymatic activity and thus affects the mineralisation process. The presented study investigates electron beam-treated gelatin hydrogels with previously incorporated ALP and successive mineralisation via incubation in a medium containing CaGP. It could be shown that electron beam treatment optimally maintains enzymatic activity of ALP which allows mineralisation. Furthermore, the precise tuning of material properties such as increasing compressive modulus is possible. This study characterizes the mineralised hydrogels in terms of mineral formation and demonstrates the formation of CaP in dependence of ALP concentration and electron dose. Furthermore, investigations of uniaxial compression stability indicate increased compression moduli for mineralised electron beam-treated gelatin hydrogels. In summary, electron beam-treated mineralized gelatin hydrogels reveal good cytocompatibility for MG-63 osteoblast like cells indicating a high potential for BTE applications.
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Affiliation(s)
- Stefanie Riedel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; (R.K.); (S.G.M.)
- Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
- Correspondence: (S.R.); (T.E.L.D.)
| | - Daniel Ward
- Division of Biomedical and Life Sciences (BLS), Faculty of Health and Medicine, Furness College, Lancaster University, Lancaster LA1 4YG, UK; (D.W.); (S.L.A.)
| | - Radmila Kudláčková
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, 142 00 Prague, Czech Republic; (R.K.); (L.B.)
| | - Karolina Mazur
- Faculty of Materials Engineering and Physics, Institute of Materials Engineering, Tadeusz Kosciuszko Cracow University of Technology, al. Jana Pawła II 37, 31-864 Cracow, Poland;
| | - Lucie Bačáková
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, 142 00 Prague, Czech Republic; (R.K.); (L.B.)
| | - Jemma G. Kerns
- Lancaster Medical School, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YW, UK;
| | - Sarah L. Allinson
- Division of Biomedical and Life Sciences (BLS), Faculty of Health and Medicine, Furness College, Lancaster University, Lancaster LA1 4YG, UK; (D.W.); (S.L.A.)
| | - Lorna Ashton
- Chemistry Department, Lancaster University, Lancaster LA1 4YB, UK;
| | - Robert Koniezcny
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; (R.K.); (S.G.M.)
| | - Stefan G. Mayr
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; (R.K.); (S.G.M.)
- Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
| | - Timothy E. L. Douglas
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK
- Materials Science Institute (MSI), Lancaster University, Lancaster LA1 4YW, UK
- Correspondence: (S.R.); (T.E.L.D.)
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6
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Friedrich RP, Janko C, Unterweger H, Lyer S, Alexiou C. SPIONs and magnetic hybrid materials: Synthesis, toxicology and biomedical applications. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2019-0093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Abstract
In the past decades, a wide variety of different superparamagnetic iron oxide nanoparticles (SPIONs) have been synthesized. Due to their unique properties, such as big surface-to-volume ratio, superparamagnetism and comparatively low toxicity, they are principally well suited for many different technical and biomedical applications. Meanwhile, there are a numerous synthesis methods for SPIONs, but high requirements for biocompatibility have so far delayed a successful translation into the clinic. Moreover, depending on the planned application, such as for imaging, magnetic drug targeting, hyperthermia or for hybrid materials intended for regenerative medicine, specific physicochemical and biological properties are inevitable. Since a summary of all existing SPION systems, their properties and application is far too extensive, this review reports on selected methods for SPION synthesis, their biocompatibility and biomedical applications.
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Affiliation(s)
- Ralf P. Friedrich
- Department of Otorhinolaryngology, Head and Neck Surgery , Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship Universitätsklinikum , Erlangen , Germany
| | - Christina Janko
- Department of Otorhinolaryngology, Head and Neck Surgery , Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship Universitätsklinikum , Erlangen , Germany
| | - Harald Unterweger
- Department of Otorhinolaryngology, Head and Neck Surgery , Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship Universitätsklinikum , Erlangen , Germany
| | - Stefan Lyer
- Department of Otorhinolaryngology, Head and Neck Surgery , Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship Universitätsklinikum , Erlangen , Germany
| | - Christoph Alexiou
- Department of Otorhinolaryngology, Head and Neck Surgery , Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship Universitätsklinikum , Erlangen , Germany
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7
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Krömmelbein C, Mütze M, Konieczny R, Schönherr N, Griebel J, Gerdes W, Mayr SG, Riedel S. Impact of high-energy electron irradiation on mechanical, structural and chemical properties of agarose hydrogels. Carbohydr Polym 2021; 263:117970. [PMID: 33858571 DOI: 10.1016/j.carbpol.2021.117970] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 10/21/2022]
Abstract
Due to their excellent biocompatibility and biodegradability, natural hydrogels are highly demanded biomaterials for biomedical applications such as wound dressing, tissue engineering, drug delivery or three dimensional cell culture. Highly energetic electron irradiation up to 10 MeV is a powerful and fast tool to sterilize and tailor the material's properties. In this study, electron radiation treatment of agarose hydrogels was investigated to evaluate radiation effects on physical, structural and chemical properties. The viscoelastic behavior, surface hydrophilicity and swelling behavior in a range of typical sterilization doses of 0 kGy to 30 kGy was analyzed. The mechanical properties were determined by rheology measurements and decreased by more than 20% compared to the initial moduli. The number average molecular weight between crosslinks was estimated based on rubber elasticity theory to judge on the radiation degradation. In this dose range, the number average molecular weight between crosslinks increased by more than 6%. Chemical structure was investigated by FTIR spectroscopy to evaluate the radiation resistance of agarose hydrogels. With increasing electron dose, an increasing amount of carbonyl containing species was observed. In addition, irradiation was accompanied by formation of gas cavities in the hydrogels. The gas products were specified for CO2, CO and H2O. Based on the radiolytic products, a radiolysis mechanism was proposed. Electron beam treatment under high pressure conditions was found to reduce gas cavity formation in the hydrogels.
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Affiliation(s)
- Catharina Krömmelbein
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany.
| | - Martin Mütze
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany
| | - Robert Konieczny
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Nadja Schönherr
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | | | - Stefan G Mayr
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany.
| | - Stefanie Riedel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany; Division of Surface Physics, Faculty of Physics and Earth Science, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany; Cell.Copedia GmbH, Bosestraße 4, 04109 Leipzig, Germany.
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Gomez-Florit M, Pardo A, Domingues RMA, Graça AL, Babo PS, Reis RL, Gomes ME. Natural-Based Hydrogels for Tissue Engineering Applications. Molecules 2020; 25:E5858. [PMID: 33322369 PMCID: PMC7763437 DOI: 10.3390/molecules25245858] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 12/27/2022] Open
Abstract
In the field of tissue engineering and regenerative medicine, hydrogels are used as biomaterials to support cell attachment and promote tissue regeneration due to their unique biomimetic characteristics. The use of natural-origin materials significantly influenced the origin and progress of the field due to their ability to mimic the native tissues' extracellular matrix and biocompatibility. However, the majority of these natural materials failed to provide satisfactory cues to guide cell differentiation toward the formation of new tissues. In addition, the integration of technological advances, such as 3D printing, microfluidics and nanotechnology, in tissue engineering has obsoleted the first generation of natural-origin hydrogels. During the last decade, a new generation of hydrogels has emerged to meet the specific tissue necessities, to be used with state-of-the-art techniques and to capitalize the intrinsic characteristics of natural-based materials. In this review, we briefly examine important hydrogel crosslinking mechanisms. Then, the latest developments in engineering natural-based hydrogels are investigated and major applications in the field of tissue engineering and regenerative medicine are highlighted. Finally, the current limitations, future challenges and opportunities in this field are discussed to encourage realistic developments for the clinical translation of tissue engineering strategies.
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Affiliation(s)
- Manuel Gomez-Florit
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Alberto Pardo
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Rui M. A. Domingues
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Ana L. Graça
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Pedro S. Babo
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Rui L. Reis
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Manuela E. Gomes
- 3B’s 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, 4805-017 Barco, Guimarães, Portugal; (M.G.-F.); (A.P.); (R.M.A.D.); (A.L.G.); (P.S.B.); (R.L.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
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9
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Tadsen M, Friedrich RP, Riedel S, Alexiou C, Mayr SG. Contact Guidance by Microstructured Gelatin Hydrogels for Prospective Tissue Engineering Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7450-7458. [PMID: 30633496 DOI: 10.1021/acsami.8b21638] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Design of functionalized biomimetic scaffolds is one of the key approaches for regenerative medicine and other biomedical applications. Development of engineered tissue should optimize organization and function of cells and tissue in vitro as well as in vivo. Surface topography is one factor controlling cellular behavior and tissue development. By topographical patterning of biocompatible materials, highly functionalized scaffolds can be developed. Gelatin is hereby a promising candidate due to its biocompatibility and biodegradability. It is low in cost and easy to handle, enabling a variety of applications in science and medicine. However, for biomedical applications at physiological conditions, gelatin has to be additionally stabilized since its gel-sol-transition temperature lies beneath the human body temperature. This is realized by a reagent-free cross-linking technique utilizing electron beam treatment. By topographical patterning, gelatin can be functionalized toward scaffolds for cell cultivation and tissue development. Thereby, customized patterns are transferred onto gelatin hydrogels via molds. Thermal stabilization of gelatin is then achieved by electron-induced cross-linking. In this study, we investigate the influence of gelatin concentration and irradiation dose on pattern transfer, long-term stability of topographically patterned gelatin hydrogels, and their impact on the cellular behavior of human umbilical vein endothelial cells as well as normal human dermal fibroblasts. We will show that contact guidance occurs for both cell types due to a concrete stripe pattern. In addition, the presented studies show a high degree of cytocompatibility, indicating a high potential of topographically patterned gelatin hydrogels as tissue development scaffold for prospective biomedical applications.
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Affiliation(s)
- Meike Tadsen
- Leibniz Institute of Surface Engineering (IOM) , Permoserstr. 15 , 04318 Leipzig , Germany
- Division of Surface Physics, Department of Physics and Earth Sciences , Leipzig University , Linnéstr. 5 , 04103 Leipzig , Germany
| | - Ralf P Friedrich
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON) , Universitätsklinikum Erlangen , Glückstraße 10a , 91054 Erlangen , Germany
| | - Stefanie Riedel
- Leibniz Institute of Surface Engineering (IOM) , Permoserstr. 15 , 04318 Leipzig , Germany
- Division of Surface Physics, Department of Physics and Earth Sciences , Leipzig University , Linnéstr. 5 , 04103 Leipzig , Germany
| | - Christoph Alexiou
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON) , Universitätsklinikum Erlangen , Glückstraße 10a , 91054 Erlangen , Germany
| | - Stefan G Mayr
- Leibniz Institute of Surface Engineering (IOM) , Permoserstr. 15 , 04318 Leipzig , Germany
- Division of Surface Physics, Department of Physics and Earth Sciences , Leipzig University , Linnéstr. 5 , 04103 Leipzig , Germany
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10
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Deuflhard M, Eberbeck D, Hietschold P, Wilharm N, Mühlberger M, Friedrich RP, Alexiou C, Mayr SG. Magnetically responsive composites: electron beam assisted magnetic nanoparticle arrest in gelatin hydrogels for bioactuation. Phys Chem Chem Phys 2019; 21:14654-14662. [DOI: 10.1039/c9cp02910a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tailored ferrogel bioactuators are feasible by arresting nanoparticles in simple gelatin gels with the help of electron beam treatment.
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Affiliation(s)
- Marie Deuflhard
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
- Division of Surface Physics
- Department of Physics and Earth Sciences
| | - Dietmar Eberbeck
- Department 8.2 Biosignals
- Physikalisch-Technische Bundesanstalt Braunschweig und Berlin
- 10587 Berlin
- Germany
| | - Philine Hietschold
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
- Division of Surface Physics
- Department of Physics and Earth Sciences
| | - Nils Wilharm
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
- Division of Surface Physics
- Department of Physics and Earth Sciences
| | - Marina Mühlberger
- Department of Otorhinolaryngology
- Head and Neck Surgery
- Section of Experimental Oncology and Nanomedicine (SEON)
- Else Kröner-Fresenius-Stiftung-Professorship
- Universitätsklinikum Erlangen
| | - Ralf P. Friedrich
- Department of Otorhinolaryngology
- Head and Neck Surgery
- Section of Experimental Oncology and Nanomedicine (SEON)
- Else Kröner-Fresenius-Stiftung-Professorship
- Universitätsklinikum Erlangen
| | - Christoph Alexiou
- Department of Otorhinolaryngology
- Head and Neck Surgery
- Section of Experimental Oncology and Nanomedicine (SEON)
- Else Kröner-Fresenius-Stiftung-Professorship
- Universitätsklinikum Erlangen
| | - Stefan G. Mayr
- Leibniz Institute of Surface Engineering (IOM)
- 04318 Leipzig
- Germany
- Division of Surface Physics
- Department of Physics and Earth Sciences
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11
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Daza Agudelo JI, Ramirez MR, Henquin ER, Rintoul I. Modelling of swelling of PVA hydrogels considering non-ideal mixing behaviour of PVA and water. J Mater Chem B 2019. [DOI: 10.1039/c9tb00243j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PVA hydrogels behave as non-ideal mixture of water and polymers when increasing their crosslinking degree.
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Affiliation(s)
- Jorge I. Daza Agudelo
- Instituto de Desarrollo Tecnológico para la Industria Química
- Universidad Nacional del Litoral
- Consejo Nacional de Investigaciones Científicas y Técnicas
- CP 3000 Santa Fe
- Argentina
| | - María R. Ramirez
- Consejo Nacional de Investigaciones Científicas y Técnicas
- CP 3000 Santa Fe
- Argentina
| | - Eduardo R. Henquin
- Instituto de Desarrollo y Diseño
- Universidad Tecnológica Nacional
- Consejo Nacional de Investigaciones Científicas y Técnicas
- CP 3000 Santa Fe
- Argentina
| | - Ignacio Rintoul
- Instituto de Desarrollo Tecnológico para la Industria Química
- Universidad Nacional del Litoral
- Consejo Nacional de Investigaciones Científicas y Técnicas
- CP 3000 Santa Fe
- Argentina
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12
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Sapudom J, Pompe T. Biomimetic tumor microenvironments based on collagen matrices. Biomater Sci 2018; 6:2009-2024. [DOI: 10.1039/c8bm00303c] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review provides an overview of the current approaches to engineer defined 3D matrices for the investigation of tumor cell behaviorin vitro, with a focus on collagen-based fibrillar systems.
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Affiliation(s)
- Jiranuwat Sapudom
- Biophysical Chemistry Group
- Institute of Biochemistry
- Faculty of Life Sciences
- Leipzig University
- Leipzig 04103
| | - Tilo Pompe
- Biophysical Chemistry Group
- Institute of Biochemistry
- Faculty of Life Sciences
- Leipzig University
- Leipzig 04103
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13
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Riedel S, Heyart B, Apel KS, Mayr SG. Programing stimuli-responsiveness of gelatin with electron beams: basic effects and development of a hydration-controlled biocompatible demonstrator. Sci Rep 2017; 7:17436. [PMID: 29234066 PMCID: PMC5727221 DOI: 10.1038/s41598-017-17734-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 11/28/2017] [Indexed: 11/20/2022] Open
Abstract
Biomimetic materials with programmable stimuli responsiveness constitute a highly attractive material class for building bioactuators, sensors and active control elements in future biomedical applications. With this background, we demonstrate how energetic electron beams can be utilized to construct tailored stimuli responsive actuators for biomedical applications. Composed of collagen-derived gelatin, they reveal a mechanical response to hydration and changes in pH-value and ion concentration, while maintaining their excellent biocompatibility and biodegradability. While this is explicitly demonstrated by systematic characterizing an electron-beam synthesized gelatin-based actuator of cantilever geometry, the underlying materials processes are also discussed, based on the fundamental physical and chemical principles. When applied within classical electron beam lithography systems, these findings pave the way for a novel class of highly versatile integrated bioactuators from micro- to macroscales.
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Affiliation(s)
- Stefanie Riedel
- Leibniz Institute of Surface Engineering (IOM), Leipzig, 04318, Germany.
- Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Leipzig, 04103, Germany.
| | - Benedikt Heyart
- Leibniz Institute of Surface Engineering (IOM), Leipzig, 04318, Germany
| | - Katharina S Apel
- Leibniz Institute of Surface Engineering (IOM), Leipzig, 04318, Germany
| | - Stefan G Mayr
- Leibniz Institute of Surface Engineering (IOM), Leipzig, 04318, Germany.
- Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Leipzig, 04103, Germany.
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14
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Heyart B, Weidt A, Wisotzki EI, Zink M, Mayr SG. Micropatterning of reagent-free, high energy crosslinked gelatin hydrogels for bioapplications. J Biomed Mater Res B Appl Biomater 2017; 106:320-330. [PMID: 28140524 DOI: 10.1002/jbm.b.33849] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 11/21/2016] [Accepted: 12/26/2016] [Indexed: 12/28/2022]
Abstract
Hydrogels are crosslinked polymeric gels of great interest in the field of tissue engineering, particularly as biocompatible cell or drug carriers. Reagent-free electron irradiated gelatin is simple to manufacture, inexpensive and biocompatible. Here, the potential to micropattern gelatin hydrogel surfaces during electron irradiation crosslinking was demonstrated as a promising microfabrication technique to produce thermally stable structures on highly relevant length scales for bioapplications. In the present work, grooves of 3.75 to 170 µm width and several hundred nanometers depth were transferred onto gelatin hydrogels during electron irradiation and characterized by 3D confocal microscopy after exposure to ambient and physiological conditions. The survival and influence of these microstructures on cellular growth was further characterized using NIH 3T3 fibroblasts. Topographical modifications produced surface structures on which the cultured fibroblasts attached and responded by adapting their morphologies. This developed technique allows for simple and effective structuring of gelatin and opens up new possibilities for irradiation crosslinked hydrogels in biomedical applications in which cell attachment and contact guidance are favored. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 320-330, 2018.
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Affiliation(s)
- Benedikt Heyart
- Leibniz Institute for Surface Modification (IOM), Permoserstr. 15, 04318, Leipzig, Germany
| | - Astrid Weidt
- Soft Matter Physics Division, Institute for Experimental Physics 1, University of Leipzig, Linnéstr. 5, 04103, Leipzig, Germany
| | - Emilia I Wisotzki
- Leibniz Institute for Surface Modification (IOM), Permoserstr. 15, 04318, Leipzig, Germany
| | - Mareike Zink
- Soft Matter Physics Division, Institute for Experimental Physics 1, University of Leipzig, Linnéstr. 5, 04103, Leipzig, Germany
| | - Stefan G Mayr
- Leibniz Institute for Surface Modification (IOM), Permoserstr. 15, 04318, Leipzig, Germany.,Division of Surface Physics, Department of Physics and Earth Sciences, University of Leipzig, Leipzig, Germany
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15
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Wisotzki EI, Tempesti P, Fratini E, Mayr SG. Influence of high energy electron irradiation on the network structure of gelatin hydrogels as investigated by small-angle X-ray scattering (SAXS). Phys Chem Chem Phys 2017; 19:12064-12074. [DOI: 10.1039/c7cp00195a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small-angle X-ray scattering revealed ranging structural differences in physically entangled and irradiation-crosslinked gelatin hydrogels.
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Affiliation(s)
- Emilia I. Wisotzki
- Leibniz Institute of Surface Modification (IOM)
- Permoserstrasse 15
- 04318 Leipzig
- Germany
- Faculty of Physics and Earth Science
| | - Paolo Tempesti
- Department of Chemistry “Ugo Schiff” and CSGI
- University of Florence
- via della Lastruccia 3
- Sesto Fiorentino (FI)
- Italy
| | - Emiliano Fratini
- Department of Chemistry “Ugo Schiff” and CSGI
- University of Florence
- via della Lastruccia 3
- Sesto Fiorentino (FI)
- Italy
| | - Stefan G. Mayr
- Leibniz Institute of Surface Modification (IOM)
- Permoserstrasse 15
- 04318 Leipzig
- Germany
- Faculty of Physics and Earth Science
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