Abstrakti
Orthopedic disorders are increasing in our society due to population aging. Numerous biomaterials have been developed to support bone regeneration, however showing a strong discrepancy between in vitro and in vivo results. This has been attributed to a lack of knowledge about protein adsorption, an early step occurring after biomaterial implantation. Bioactive glass S53P4 is clinically accepted for orthopedic applications pertaining to its osteoconductive and osteogenic behavior. However, its interactions with proteins are still unclear. To better understand the impact of surface chemistry on the glass-protein interactions, bare and silanized S53P4 were placed in contact with fibronectin (fn), in static and dynamic conditions. The surfaces were characterized by zeta potential, confocal microscopy and FTIR-ATR spectroscopy.The impact of fn on the cell response was assessed by live-dead, proliferation and morphology tests, using human adipose stem cells (hASCs). Both S53P4 and silanized-S53P4 showed good cell viability. Fn was found to affect cell alignment on both bare and silanized substrates. The impact of the surface treatments on osteogenesis was evaluated studying the expression of relevant osteogenic markers (hDLX5, hRUNX2A, hOSTERIX), which was particularly promoted by the concomitant action of silanization and fn coating.
| Alkuperäiskieli | Englanti |
|---|---|
| Artikkeli | 100635 |
| Sivumäärä | 21 |
| Julkaisu | Applied Surface Science Advances |
| Vuosikerta | 23 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - syysk. 2024 |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Rahoitus
This project was funded by the European Union's Horizon 2020 Research and Innovation Program under the Marie Sk\u0142odowska-Curie grant agreement [No 860462 (PREMUROSA)] and by Tampere University Doctoral School Programme. The authors acknowledge Niklas K\u00E4hk\u00F6nen for his assistance in protein extraction, Anna-Maija Honkala for her support in performing the gene expression tests and PhD candidate Birhanu Belay for the support in developing the methodology to study cell orientation. PhD Rolle Rahikainen is acknowledged for his support in image processing and PhD Vijay Singh Parihar for his support in the electrophoretic analysis. The authors acknowledge Prof. Emmanuel Pauthe for a fruitful discussion concerning protein conformation. Tampere Imaging Facility (TIF) and Tampere Protein Services core are acknowledged for their infrastructure support, both supported by Biocenter Finland. VPH acknowledges Academy of Finland, Sigrid Juselius Foundation and Cancer Foundation Finland for financial support.
| Rahoittajat | Rahoittajan numero |
|---|---|
| Tampere Imaging Facility | |
| Strategic Research Council at the Research Council of Finland | |
| Syöpäsäätiö | |
| Biocenter Finland | |
| Sigrid Juséliuksen Säätiö | |
| Horizon 2020 | |
| H2020 Marie Skłodowska-Curie Actions | 860462 |
Julkaisufoorumi-taso
- Jufo-taso 1
!!ASJC Scopus subject areas
- Surfaces and Interfaces
- Surfaces, Coatings and Films
Sormenjälki
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