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van Velthoven MJJ, Gudde AN, Arendsen E, Roovers JP, Guler Z, Oosterwijk E, Kouwer PHJ. Growth Factor Immobilization to Synthetic Hydrogels: Bioactive bFGF-Functionalized Polyisocyanide Hydrogels. Adv Healthc Mater 2023; 12:e2301109. [PMID: 37526214 DOI: 10.1002/adhm.202301109] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 07/22/2023] [Indexed: 08/02/2023]
Abstract
With its involvement in cell proliferation, migration and differentiation basic fibroblast growth factor (bFGF) has great potential for tissue engineering purposes. So far, however, clinical translation of soluble bFGF-based therapies is unsuccessful, because the required effective doses are often supraphysiological, which may cause adverse effects. An effective solution is growth factor immobilization, whereby bFGF retains its bioactivity at increased efficacy. Studied carriers include films, solid scaffolds, and particles, as well as natural and synthetic hydrogels. However, these synthetic hydrogels poorly resemble the characteristics of the native extracellular matrix (ECM). In this work, bFGF is covalently conjugated to the synthetic, but highly biocompatible, polyisocyanide-based hydrogel (PIC-bFGF), which closely mimics the architecture and mechanical properties of the ECM. The growth factor conjugation protocol is straightforward and readily extrapolated to other growth factors or proteins. The PIC-bFGF hydrogel shows a prolonged bioactivity up to 4 weeks although no clear effects on the ECM metabolism are observed. Beyond the future potential of the PIC-bFGF hydrogel toward various tissue engineering applications, this work underlines that simple biological conjugation procedures are a powerful strategy to induce additional bioactivity in 3D synthetic cell culture matrices.
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Affiliation(s)
- Melissa J J van Velthoven
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6525 AJ, The Netherlands
- Department of Urology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 28, Nijmegen, 6525 GA, The Netherlands
| | - Aksel N Gudde
- Department of Obstetrics and Gynecology, Amsterdam University Medical Center, location AMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
- Amsterdam Reproduction and Development, Amsterdam University Medical Center, location AMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
| | - Evert Arendsen
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6525 AJ, The Netherlands
- Department of Urology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 28, Nijmegen, 6525 GA, The Netherlands
| | - Jan-Paul Roovers
- Department of Obstetrics and Gynecology, Amsterdam University Medical Center, location AMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
- Amsterdam Reproduction and Development, Amsterdam University Medical Center, location AMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
| | - Zeliha Guler
- Department of Obstetrics and Gynecology, Amsterdam University Medical Center, location AMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
- Amsterdam Reproduction and Development, Amsterdam University Medical Center, location AMC, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands
| | - Egbert Oosterwijk
- Department of Urology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Geert Grooteplein Zuid 28, Nijmegen, 6525 GA, The Netherlands
| | - Paul H J Kouwer
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6525 AJ, The Netherlands
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Metzger S, Blache U, Lienemann PS, Karlsson M, Weber FE, Weber W, Ehrbar M. Cell-Mediated Proteolytic Release of Growth Factors from Poly(Ethylene Glycol) Matrices. Macromol Biosci 2016; 16:1703-1713. [PMID: 27548907 DOI: 10.1002/mabi.201600223] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/22/2016] [Indexed: 11/10/2022]
Abstract
Engineering in vitro tissue mimetics that resemble the corresponding living tissues requires the 3D arrangement of tissue progenitor cells and their differentiation by localized growth factor (GF) signaling cues. Recent technological advances open a large field of possibilities for the creation of complex GF arrangements. Additionally, cell-instructive biomaterials, which bind GFs by various mechanisms and release them with different kinetics depending on binding affinity, have become available. This paper describes the development of a matrix metalloproteinase (MMP)-degradable streptavidin-based linker module, which allows the release of immobilized GFs from synthetic biomimetic poly(ethylene glycol) hydrogels independently of the hydrogel degradation. The MMP-sensitive streptavidin linker is shown to efficiently bind biotinylated molecules, and as proof of concept, bone morphogenetic protein-2 (BMP-2) delivery via the MMP-degradable linker is used to induce osteogenic differentiation in C2C12 cells and mesenchymal stem cells. The results show a significantly increased net effect of proteolytically releasable BMP-2 in comparison to stably immobilized and soluble BMP-2. This study indicates that a GF delivery system directly responsive to cellular activity can have important implications for the synthesis of tissue mimetics and regenerative medicine, as it can influence the availability, the localization of effects, as well as efficacy of employed GFs.
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Affiliation(s)
- Stéphanie Metzger
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
| | - Ulrich Blache
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
| | - Philipp S Lienemann
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland.,School of Engineering and Applied Sciences, Harvard University, 58 Oxford St., Cambridge, MA, 02138, USA
| | - Maria Karlsson
- Faculty of Biology and BIOSS Centre for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany
| | - Franz E Weber
- Department of Cranio Maxillofacial Surgery, Oral Biotechnology and Bioengineering, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
| | - Wilfried Weber
- Faculty of Biology and BIOSS Centre for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 18, 79104, Freiburg, Germany
| | - Martin Ehrbar
- Department of Obstetrics, University and University Hospital Zurich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
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Correia CR, Gil S, Reis RL, Mano JF. A Closed Chondromimetic Environment within Magnetic-Responsive Liquified Capsules Encapsulating Stem Cells and Collagen II/TGF-β3 Microparticles. Adv Healthc Mater 2016; 5:1346-55. [PMID: 26990273 DOI: 10.1002/adhm.201600034] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/05/2016] [Indexed: 12/19/2022]
Abstract
TGF-β3 is enzymatically immobilized by transglutaminase-2 action to poly(l-lactic acid) microparticles coated with collagen II. Microparticles are then encapsulated with stem cells inside liquified spherical compartments enfolded with a permselective shell through layer-by-layer adsorption. Magnetic nanoparticles are electrostatically bound to the multilayered shell, conferring magnetic-response ability. The goal of this study is to engineer a closed environment inside which encapsulated stem cells would undergo a self-regulated chondrogenesis. To test this hypothesis, capsules are cultured in chondrogenic differentiation medium without TGF-β3. Their biological outcome is compared with capsules encapsulating microparticles without TGF-β3 immobilization and cultured in normal chondrogenic differentiation medium containing soluble TGF-β3. Glycosaminoglycans quantification demosntrates that similar chondrogenesis levels are achieved. Moreover, collagen fibrils resembling the native extracellular matrix of cartilage can be observed. Importantly, the genetic evaluation of characteristic cartilage markers confirms the successful chondrogenesis, while hypertrophic markers are downregulated. In summary, the engineered capsules are able to provide a suitable and stable chondrogenesis environment for stem cells without the need of TGF-β3 supplementation. This kind of self-regulated capsules with softness, robustness, and magnetic responsive characteristics is expected to provide injectability and in situ fixation, which is of great advantage for minimal invasive strategies to regenerate cartilage.
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Affiliation(s)
- Clara R. Correia
- 3B's Research Group - 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
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
| | - Sara Gil
- 3B's Research Group - 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
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
| | - Rui L. Reis
- 3B's Research Group - 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
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
| | - João F. Mano
- 3B's Research Group - 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
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
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