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Huang Q, Zou Y, Arno MC, Chen S, Wang T, Gao J, Dove AP, Du J. Hydrogel scaffolds for differentiation of adipose-derived stem cells. Chem Soc Rev 2018; 46:6255-6275. [PMID: 28816316 DOI: 10.1039/c6cs00052e] [Citation(s) in RCA: 219] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Natural extracellular matrices (ECMs) have been widely used as a support for the adhesion, migration, differentiation, and proliferation of adipose-derived stem cells (ADSCs). However, poor mechanical behavior and unpredictable biodegradation properties of natural ECMs considerably limit their potential for bioapplications and raise the need for different, synthetic scaffolds. Hydrogels are regarded as the most promising alternative materials as a consequence of their excellent swelling properties and their resemblance to soft tissues. A variety of strategies have been applied to create synthetic biomimetic hydrogels, and their biophysical and biochemical properties have been modulated to be suitable for cell differentiation. In this review, we first give an overview of common methods for hydrogel preparation with a focus on those strategies that provide potential advantages for ADSC encapsulation, before summarizing the physical properties of hydrogel scaffolds that can act as biological cues. Finally, the challenges in the preparation and application of hydrogels with ADSCs are explored and the perspectives are proposed for the next generation of scaffolds.
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Affiliation(s)
- Qiutong Huang
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai, 201804, China.
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Novotna L, Kucera L, Hampl A, Drdlik D, Cihlar J, Cihlar J. Biphasic calcium phosphate scaffolds with controlled pore size distribution prepared by in-situ foaming. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 95:363-370. [PMID: 30573260 DOI: 10.1016/j.msec.2018.03.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 01/22/2018] [Accepted: 03/21/2018] [Indexed: 01/15/2023]
Abstract
In this study, a reproducible method of fabricating hierarchically 3D porous scaffolds with high porosity and pore interconnectivity is reported. The method is based on in-situ foaming of a dispersion of diisocyanate, polyol, water and hydroxyapatite (HA) to form a hard foamed HA/polyurethane composite which after heat treatment provided a bi-phase calcium phosphate scaffold. This technique, combining the advantages of polymer sponge and direct foaming methods, provides a better control over the macrostructure of the scaffold. A modification of the multi-scaled porous macrostructure of scaffolds produced by changing the ratio of input reactants and by sintering temperature was studied. The pore morphology, size, and distribution were characterized using a scanning electron microscope and mercury porosimetry. The pores were open and interconnected with multi-scale (from several nanometres to millimetres) sizes convenient for using in tissue engineering applications. The bioactivity was confirmed by growing an apatite layer on the surfaces after immersion in simulated body fluid. The material was biocompatible, as shown by using normal human adipose tissue-derived stem cells (ASC). When seeded onto the scaffolds, the ASC adhered and remained healthy while maintaining their typical morphology.
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Affiliation(s)
- Lenka Novotna
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic.
| | - Lukas Kucera
- Faculty of Medicine, Department of Histology and Embryology, Masaryk University, Kamenice 3, 625 00 Brno, Czech Republic
| | - Ales Hampl
- Faculty of Medicine, Department of Histology and Embryology, Masaryk University, Kamenice 3, 625 00 Brno, Czech Republic
| | - Daniel Drdlik
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic; Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2, 616 00 Brno, Czech Republic
| | - Jaroslav Cihlar
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Jaroslav Cihlar
- CEITEC - Central European Institute of Technology, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
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Sedlačík T, Proks V, Šlouf M, Dušková-Smrčková M, Studenovská H, Rypáček F. Macroporous Biodegradable Cryogels of Synthetic Poly(α-amino acids). Biomacromolecules 2015; 16:3455-65. [PMID: 26474357 DOI: 10.1021/acs.biomac.5b01224] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We present an investigation of the preparation of highly porous hydrogels based on biodegradable synthetic poly(α-amino acid) as potential tissue engineering scaffolds. Covalently cross-linked gels with permanent pores were formed under cryogenic conditions by free-radical copolymerization of poly[N(5)-(2-hydroxyethyl)-L-glutamine-stat-N(5)-(2-methacryloyl-oxy-ethyl)-L-glutamine] (PHEG-MA) with 2-hydrohyethyl methacrylate (HEMA) and, optionally, N-propargyl acrylamide (PrAAm) as minor comonomers. The morphology of the cryogels showed interconnected polyhedral or laminar pores. The volume content of communicating water-filled pores was >90%. The storage moduli of the swollen cryogels were in the range of 1-6 kPa, even when the water content was >95%. The enzymatic degradation of a cryogel corresponded to the decrease in its storage modulus during incubation with papain, a model enzyme with specificity analogous to wound-healing enzymes. It was shown that cryogels with incorporated alkyne groups can easily be modified with short synthetic peptides using azide-alkyne cycloaddition "click" chemistry, thus providing porous hydrogel scaffolds with biomimetic features.
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Affiliation(s)
- Tomáš Sedlačík
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , 162 06 Prague, Czech Republic.,Department of Biomaterials and Bioanalogous Polymer Systems, Institute of Macromolecular Chemistry , Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic
| | - Vladimír Proks
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , 162 06 Prague, Czech Republic.,Department of Biomaterials and Bioanalogous Polymer Systems, Institute of Macromolecular Chemistry , Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , 162 06 Prague, Czech Republic.,Department of Biomaterials and Bioanalogous Polymer Systems, Institute of Macromolecular Chemistry , Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic
| | - Miroslava Dušková-Smrčková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , 162 06 Prague, Czech Republic.,Department of Biomaterials and Bioanalogous Polymer Systems, Institute of Macromolecular Chemistry , Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic
| | - Hana Studenovská
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , 162 06 Prague, Czech Republic.,Department of Biomaterials and Bioanalogous Polymer Systems, Institute of Macromolecular Chemistry , Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic
| | - František Rypáček
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , 162 06 Prague, Czech Republic.,Department of Biomaterials and Bioanalogous Polymer Systems, Institute of Macromolecular Chemistry , Heyrovsky sq. 2, 162 06 Prague 6, Czech Republic
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GOLUNOVA A, JAROŠ J, JURTÍKOVÁ V, KOTELNIKOV I, KOTEK J, HLÍDKOVÁ H, STREIT L, HAMPL A, RYPÁČEK F, PROKS V. N-(2-Hydroxypropyl) Methacrylamide Based Cryogels – Synthesis and Biomimetic Modification for Stem Cell Applications. Physiol Res 2015; 64:S19-27. [DOI: 10.33549/physiolres.933134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The design of favorable mechanical properties and suitable surface modifications of hydrogels in order to stimulate specific cell response is a great challenge. N-(2-Hydroxypropyl) methacryl-amide (HPMA) was utilized to form macroporous cryogel scaffolds for stem cell applications. Furthermore, one group of scaffolds was enhanced by copolymerization of HPMA with methacryloyl-GGGRGDS-OH peptide in an effort to integrate biomimetic adhesion sites. The cryogels were characterized by stiffness and equilibrium swelling measurements as well as by scanning electron microscopy. Cell culture experiments were performed with human adipose-derived stem cells and substrates were found completely non-toxic. Moreover, RGDS-enriched cryogels supported cell attachment, spreading and proliferation, so they can be considered suitable for designed aims.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - V. PROKS
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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