Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation
Collagen, as the main component of connective tissue, is frequently used in various tissue engineering applications. In this study, porous sponge-like collagen scaffolds were prepared by freeze-drying and were then mineralized in a simulated body fluid. The mechanical stability was similar in both t...
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MDPI AG
2022-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/3/602 |
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| author | Lucie Bacakova Katarina Novotna Daniel Hadraba Jana Musilkova Petr Slepicka Milos Beran |
| author_facet | Lucie Bacakova Katarina Novotna Daniel Hadraba Jana Musilkova Petr Slepicka Milos Beran |
| author_sort | Lucie Bacakova |
| collection | DOAJ |
| description | Collagen, as the main component of connective tissue, is frequently used in various tissue engineering applications. In this study, porous sponge-like collagen scaffolds were prepared by freeze-drying and were then mineralized in a simulated body fluid. The mechanical stability was similar in both types of scaffolds, but the mineralized scaffolds (MCS) contained significantly more calcium, magnesium and phosphorus than the unmineralized scaffolds (UCS). Although the MCS contained a lower percentage (~32.5%) of pores suitable for cell ingrowth (113–357 μm in diameter) than the UCS (~70%), the number of human-osteoblast-like MG-63 cells on days 1, 3 and 7 after seeding was higher on MCS than on UCS, and the cells penetrated deeper into the MCS. The cell growth in extracts prepared by eluting the scaffolds for 7 days in a cell culture medium was also markedly higher in the MCS extracts, as indicated by real-time monitoring in the sensory xCELLigence system for 7 days. From this point of view, MCS are more promising for bone tissue engineering than UCS. However, MCS evoked a more pronounced inflammatory response than UCS, as indicated by the production of tumor necrosis factor-alpha (TNF-α) in macrophage-like RAW 264.7 cells in cultures on these scaffolds. |
| first_indexed | 2024-03-09T23:15:27Z |
| format | Article |
| id | doaj.art-496a510c6a054384bc6b36c3980c84ba |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T23:15:27Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-496a510c6a054384bc6b36c3980c84ba2023-11-23T17:36:37ZengMDPI AGPolymers2073-43602022-02-0114360210.3390/polym14030602Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune ActivationLucie Bacakova0Katarina Novotna1Daniel Hadraba2Jana Musilkova3Petr Slepicka4Milos Beran5Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech RepublicInstitute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech RepublicInstitute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech RepublicInstitute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech RepublicDepartment of Solid State Engineering, Faculty of Chemical Technology, University of Chemistry and Technology, Technicka 5, 166 28 Prague 6, Czech RepublicFood Research Institute Prague, Radiova 7, 102 31 Prague 10, Czech RepublicCollagen, as the main component of connective tissue, is frequently used in various tissue engineering applications. In this study, porous sponge-like collagen scaffolds were prepared by freeze-drying and were then mineralized in a simulated body fluid. The mechanical stability was similar in both types of scaffolds, but the mineralized scaffolds (MCS) contained significantly more calcium, magnesium and phosphorus than the unmineralized scaffolds (UCS). Although the MCS contained a lower percentage (~32.5%) of pores suitable for cell ingrowth (113–357 μm in diameter) than the UCS (~70%), the number of human-osteoblast-like MG-63 cells on days 1, 3 and 7 after seeding was higher on MCS than on UCS, and the cells penetrated deeper into the MCS. The cell growth in extracts prepared by eluting the scaffolds for 7 days in a cell culture medium was also markedly higher in the MCS extracts, as indicated by real-time monitoring in the sensory xCELLigence system for 7 days. From this point of view, MCS are more promising for bone tissue engineering than UCS. However, MCS evoked a more pronounced inflammatory response than UCS, as indicated by the production of tumor necrosis factor-alpha (TNF-α) in macrophage-like RAW 264.7 cells in cultures on these scaffolds.https://www.mdpi.com/2073-4360/14/3/602biopolymersnature-derived polymersporous scaffoldsmechanical propertieselemental compositionregenerative medicine |
| spellingShingle | Lucie Bacakova Katarina Novotna Daniel Hadraba Jana Musilkova Petr Slepicka Milos Beran Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation Polymers biopolymers nature-derived polymers porous scaffolds mechanical properties elemental composition regenerative medicine |
| title | Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation |
| title_full | Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation |
| title_fullStr | Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation |
| title_full_unstemmed | Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation |
| title_short | Influence of Biomimetically Mineralized Collagen Scaffolds on Bone Cell Proliferation and Immune Activation |
| title_sort | influence of biomimetically mineralized collagen scaffolds on bone cell proliferation and immune activation |
| topic | biopolymers nature-derived polymers porous scaffolds mechanical properties elemental composition regenerative medicine |
| url | https://www.mdpi.com/2073-4360/14/3/602 |
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