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Mrázek J, Sita J, Ondreáš F, Zubov A, Chmelař J. Homogeneous films from amphiphilic hyaluronan and their characterization by confocal microscopy and nanoindentation. Carbohydr Polym 2024; 340:122331. [PMID: 38858014 DOI: 10.1016/j.carbpol.2024.122331] [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: 03/01/2024] [Revised: 05/02/2024] [Accepted: 05/25/2024] [Indexed: 06/12/2024]
Abstract
Self-supporting films from amphiphilic hyaluronan are suitable for medical applications like wound dressings or resorbable implants. These films are typically cast from water/alcohol solutions. However, when the mixed solvent evaporates in ambient air, convection flows develop in the solution and become imprinted in the film, potentially compromising its properties. Consequently, we developed a novel film manufacturing method: drying in a closed box under saturated vapour conditions. Using this approach, we prepared a series of optically clear lauroyl-hyaluronan (LHA) films with uniform thickness and compared them to their air-dried counterparts. We first evaluated swelling ratios and elastic moduli for LHA films with varying degrees of substitution. The box-dried films swelled significantly less and were 1-2 orders of magnitude stiffer than air-dried films from the same LHA sample. Confocal microscopy revealed that box-dried films exhibited a regular microstructure, while air-dried films displayed a pore-size gradient and strong microstructure modulation due to convection flows. Local elastic modulus variations arising from these microstructures were assessed using nanoindentation mapping. Importantly, achieving the desired film stiffness requires much lower polymer modification when box-drying is used, enhancing the biological response to the material. These findings have implications for all polysaccharide formulations that utilize mixed solvents.
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Affiliation(s)
- Jiří Mrázek
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic.
| | - Jaroslav Sita
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic; Brno University of Technology, Central European Institute of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - František Ondreáš
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic; Brno University of Technology, Central European Institute of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
| | - Alexandr Zubov
- University of Chemistry and Technology, Department of Chemical Engineering, Technická 5, 166 28 Prague, Czech Republic
| | - Josef Chmelař
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
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Horáčková L, Chmelíčková K, Hermannová M, Pitucha T, Vágnerová H, Židek O, Velebný V, Chmelař J. Water-insoluble fibres, threads, and fabrics from lauroyl derivatives of hyaluronan. Int J Biol Macromol 2023; 234:123654. [PMID: 36780961 DOI: 10.1016/j.ijbiomac.2023.123654] [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: 07/03/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
Hyaluronan (HA) is a naturally occurring polysaccharide widely used in medicine and cosmetics. To further broaden its potential, various HA derivatives have been developed with the aim of reducing solubility, slowing degradation, or providing other beneficial properties. However, for most medical applications, these derivatives must be processed into suitable forms. Here we present water-insoluble fibres prepared from lauroyl-modified HA using a wet spinning process. Important properties of the fibres, such as swelling or the degradation rate, can be fine-tuned by adjusting the degree of HA modification. Due to their mechanical properties, the lauroyl HA fibres can be easily processed into threads and subsequently into fabrics of various sizes, shapes, and degrees of porosity. In addition, in vitro cytotoxicity testing of the fibres showed that they were non-cytotoxic. Overall, our results suggest that lauroyl HA fibres are a promising material that could be used to develop a variety of medical devices.
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Affiliation(s)
- Lucie Horáčková
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic; Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice, Czech Republic
| | | | | | - Tomáš Pitucha
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
| | - Hana Vágnerová
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
| | - Ondřej Židek
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
| | - Vladimír Velebný
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic
| | - Josef Chmelař
- Contipro a.s., Dolní Dobrouč 401, 561 02 Dolní Dobrouč, Czech Republic.
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Mrázek J, Kohout J, Kmječ T, Nešporová K, Chmelař J, Kubala L, Velebný V. Insoluble hyaluronan films obtained by heterogeneous crosslinking with iron(III) as resorbable implants. Int J Biol Macromol 2021; 191:201-210. [PMID: 34543627 DOI: 10.1016/j.ijbiomac.2021.09.059] [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: 04/26/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
We present water-insoluble hyaluronan films crosslinked by trivalent iron developed as potential resorbable implants. The films were crosslinked by sorption of ferric salt into solid HA films in water/2-propanol bath. These heterogeneously crosslinked films (het-FeHA) remained tough and dimensionally stable when rehydrated in saline. In contrast, films prepared by drying the well-known homogeneous ferric hyaluronate gels (hom-FeHA) softened upon rehydration and expanded rapidly. Differences between hom-FeHA and het-FeHA result from polymer network topology (dominant inter- or intra-molecular crosslink, respectively). Moreover, Mössbauer spectroscopy of het-FeHA revealed diiron complexes, while iron in the hom-FeHA was present exclusively as γ-FeOOH nanoparticles or amorphous FeOOH. The biocompatibility tests of het-FeHA did not show any adverse effect and the sample disintegrated within one day when implanted in mice peritoneum. In conclusion, we developed implantable hyaluronan-based free-standing film with minimal swelling that can be resorbed quickly enough to avoid induction of foreign-body reaction.
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Affiliation(s)
- Jiří Mrázek
- Contipro a.s., Dolní Dobrouč 401, 56102 Dolní Dobrouč, Czechia; Department of Medical Biophysics and Medical Informatics, Third Faculty of Medicine, Charles University, Prague, Czechia.
| | - Jaroslav Kohout
- Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000 Prague 8, Czechia
| | - Tomáš Kmječ
- Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000 Prague 8, Czechia
| | | | - Josef Chmelař
- Contipro a.s., Dolní Dobrouč 401, 56102 Dolní Dobrouč, Czechia
| | - Lukáš Kubala
- Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 65 Brno, Czechia; International Clinical Research Center, St. Anne's University Hospital, Pekařská 53, 656 91 Brno, Czechia
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Lauroyl hyaluronan films for local drug delivery: Preparation and factors influencing the release of small molecules. Int J Pharm 2021; 608:121111. [PMID: 34547392 DOI: 10.1016/j.ijpharm.2021.121111] [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: 06/08/2021] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 11/21/2022]
Abstract
Lauroyl derivatives of hyaluronan are safe and biodegradable materials that seem promising for application in medicine. However, their potential in the field of drug delivery was not yet explored. We thus prepared lauroyl hyaluronan films loaded with various drugs and studied the effects of lauroyl hyaluronan properties, drug hydrophobicity and medium composition on the drug release. Since biomolecules will always be present in real clinical applications, media supplemented by albumin were also included. The amphiphilic character of lauroyl hyaluronan enabled convenient loading of the films by both hydrophilic and hydrophobic drugs. Dominant factors influencing drug release were drug hydrophobicity and the presence of albumin. Hydrophilic diclofenac was released rapidly in all cases, while triclosan with medium hydrophobicity exhibited slower release sensitive to other parameters, reaching equilibrium values in the used experimental setup. The release of hydrophobic octenidine into pure buffer was almost negligible, but the addition of albumin did promote its release. The strong effect of albumin highlights the importance of considering biomolecules in the design of release experiments.
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Factors determining self-assembly of hyaluronan. Carbohydr Polym 2021; 254:117307. [DOI: 10.1016/j.carbpol.2020.117307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/25/2020] [Accepted: 10/20/2020] [Indexed: 12/21/2022]
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Chmelař J, Mrázek J, Hermannová M, Kubala L, Ambrožová G, Kocurková A, Drmota T, Nešporová K, Grusová L, Velebný V. Biodegradable free-standing films from lauroyl derivatives of hyaluronan. Carbohydr Polym 2019; 224:115162. [DOI: 10.1016/j.carbpol.2019.115162] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/01/2019] [Accepted: 08/01/2019] [Indexed: 12/15/2022]
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Šedová P, Buffa R, Šilhár P, Kovářová L, Vágnerová H, Bednařík J, Basarabová I, Hejlová L, Ščigalková I, Šimek M, Velebný V. The effect of hydrazide linkers on hyaluronan hydrazone hydrogels. Carbohydr Polym 2019; 216:63-71. [DOI: 10.1016/j.carbpol.2019.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/18/2019] [Accepted: 04/02/2019] [Indexed: 01/04/2023]
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Chmelař J, Mrazek J, Dusankova M, Novotny J, Velebny V. Convective Patterns in Solution-Casted Films from Acylated Hyaluronan. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201800515] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Josef Chmelař
- Contipro a.s.; Dolni Dobrouc 401 561 02 Czech Republic
| | - Jiri Mrazek
- Contipro a.s.; Dolni Dobrouc 401 561 02 Czech Republic
- Department of Medical Biophysics and Medical Informatics; Third Faculty of Medicine; Charles University; Ruska 87 Prague 100 00 Czech Republic
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Chmelař J, Bělský P, Mrázek J, Švadlák D, Hermannová M, Šlouf M, Krakovský I, Šmejkalová D, Velebný V. Nanostructure of hyaluronan acyl-derivatives in the solid state. Carbohydr Polym 2018; 195:468-475. [DOI: 10.1016/j.carbpol.2018.04.111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/23/2018] [Accepted: 04/27/2018] [Indexed: 01/30/2023]
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Karel S, Sogorkova J, Hermannova M, Nesporova K, Marholdova L, Chmelickova K, Bednarova L, Flegel M, Drasar P, Velebny V. Stabilization of hyaluronan-based materials by peptide conjugation and its use as a cell-seeded scaffold in tissue engineering. Carbohydr Polym 2018; 201:300-307. [PMID: 30241822 DOI: 10.1016/j.carbpol.2018.08.082] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/15/2018] [Accepted: 08/16/2018] [Indexed: 01/07/2023]
Abstract
New materials based on molecules naturally occurred in body are assumed to be fully biocompatible and biodegradable. In our study, we used hyaluronic acid (HA) modified with peptides, which meet all this criterion and could be advantageously used in tissue engineering. Peptides with RGD, IKVAV or SIKVAV adhesive motif were attached to HA-based fiber or non-woven textile through ester bond in the term of solid phase peptide synthesis. A linker between HA and peptide containing three glycine or two 6-aminohexanoyl units was applied to make peptides more available for cell surface receptors. Dermal fibroblasts adhered readily on this material, preferentially to RGD peptide with 6-aminohexanoyl linker. Contrary, the absence of adhesive peptide did not allow the cell attachment but maintained the material stability.
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Affiliation(s)
- Sergej Karel
- Contipro a. s., Dolni Dobrouc 401, CZ-561 02 Dolni Dobrouc, Czech Republic; Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, CZ-166 10 Prague, Czech Republic.
| | - Jana Sogorkova
- Contipro a. s., Dolni Dobrouc 401, CZ-561 02 Dolni Dobrouc, Czech Republic
| | - Martina Hermannova
- Contipro a. s., Dolni Dobrouc 401, CZ-561 02 Dolni Dobrouc, Czech Republic
| | - Kristina Nesporova
- Contipro a. s., Dolni Dobrouc 401, CZ-561 02 Dolni Dobrouc, Czech Republic
| | - Lucie Marholdova
- Contipro a. s., Dolni Dobrouc 401, CZ-561 02 Dolni Dobrouc, Czech Republic
| | | | - Lucie Bednarova
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, CZ-166 10 Prague, Czech Republic
| | - Martin Flegel
- University of Chemistry and Technology, Department of Chemistry of Natural Compounds, CZ-166 28 Prague, Czech Republic
| | - Pavel Drasar
- University of Chemistry and Technology, Department of Chemistry of Natural Compounds, CZ-166 28 Prague, Czech Republic
| | - Vladimir Velebny
- Contipro a. s., Dolni Dobrouc 401, CZ-561 02 Dolni Dobrouc, Czech Republic
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Sogorkova J, Zapotocky V, Cepa M, Stepankova V, Vagnerova H, Batova J, Pospisilova M, Betak J, Nesporova K, Hermannova M, Daro D, Duffy G, Velebny V. Optimization of cell growth on palmitoyl-hyaluronan knitted scaffolds developed for tissue engineering applications. J Biomed Mater Res A 2018; 106:1488-1499. [PMID: 29377555 DOI: 10.1002/jbm.a.36353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 01/18/2018] [Accepted: 01/19/2018] [Indexed: 12/16/2022]
Abstract
Polysaccharides meet several criteria for a suitable biomaterial for tissue engineering, which include biocompatibility and ability to support the delivery and growth of cells. Nevertheless, most of these polysaccharides, for example dextran, alginate, and glycosaminoglycans, are highly soluble in aqueous solutions. Hyaluronic acid hydrophobized by palmitic acid and processed to the form of wet-spun fibers and the warp-knitted textile scaffold is water non-soluble, but biodegradable material, which could be used for the tissue engineering purpose. However, its surface quality does not allow cell attachment. To enhance the biocompatibility the surface of palmitoyl-hyaluronan was roughened by freeze drying and treated by different cell adhesive proteins (fibronectin, fibrinogen, laminin, methacrylated gelatin and collagen IV). Except for collagen IV, these proteins covered the fibers uniformly for an extended period of time and supported the adhesion and cultivation of dermal fibroblasts and mesenchymal stem cells. Interestingly, adipose stem cells cultivated on the fibronectin-modified scaffold secreted increasing amount of HGF, SDF-1, and VEGF, three key growth factors involved in cardiac regeneration. These results suggested that palmitoyl-hyaluronan scaffold may be a promising material for various applications in tissue regeneration, including cardiac tissue repair. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1488-1499, 2018.
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Affiliation(s)
- Jana Sogorkova
- Contipro a. s., Dolni Dobrouc 401, 561 02, Czech Republic
| | | | - Martin Cepa
- Contipro a. s., Dolni Dobrouc 401, 561 02, Czech Republic
| | | | - Hana Vagnerova
- Contipro a. s., Dolni Dobrouc 401, 561 02, Czech Republic
| | - Jana Batova
- Contipro a. s., Dolni Dobrouc 401, 561 02, Czech Republic
| | | | - Jiri Betak
- Contipro a. s., Dolni Dobrouc 401, 561 02, Czech Republic
| | | | | | - Dorothée Daro
- Celyad, Rue Edouard Belin 2, Mont-Saint-Guibert, 1435, Belgium
| | - Garry Duffy
- Anatomy, School of Medicine, College of Medicine Nursing and Health Sciences, National University of Ireland, Galway, Ireland.,Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI & TCD, Dublin, Ireland
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