3D Printed Composite Scaffolds of GelMA and Hydroxyapatite Nanopowders Doped with Mg/Zn Ions to Evaluate the Expression of Genes and Proteins of Osteogenic Markers.
3D printing
GelMA
hydroxyapatite
osteogenesis
Journal
Nanomaterials (Basel, Switzerland)
ISSN: 2079-4991
Titre abrégé: Nanomaterials (Basel)
Pays: Switzerland
ID NLM: 101610216
Informations de publication
Date de publication:
29 Sep 2022
29 Sep 2022
Historique:
received:
22
08
2022
revised:
22
09
2022
accepted:
26
09
2022
entrez:
14
10
2022
pubmed:
15
10
2022
medline:
15
10
2022
Statut:
epublish
Résumé
As bone diseases and defects are constantly increasing, the improvement of bone regeneration techniques is constantly evolving. The main purpose of this scientific study was to obtain and investigate biomaterials that can be used in tissue engineering. In this respect, nanocomposite inks of GelMA modified with hydroxyapatite (HA) substituted with Mg and Zn were developed. Using a 3D bioprinting technique, scaffolds with varying shapes and dimensions were obtained. The following analyses were used in order to study the nanocomposite materials and scaffolds obtained by the 3D printing technique: Fourier transform infrared spectrometry and X-ray diffraction (XRD), scanning electron microscopy (SEM), and micro-computed tomography (Micro-CT). The swelling and dissolvability of each scaffold were also studied. Biological studies, osteopontin (OPN), and osterix (OSX) gene expression evaluations were confirmed at the protein levels, using immunofluorescence coupled with confocal microscopy. These findings suggest the positive effect of magnesium and zinc on the osteogenic differentiation process. OSX fluorescent staining also confirmed the capacity of GelMA-HM5 and GelMA-HZ5 to support osteogenesis, especially of the magnesium enriched scaffold.
Identifiants
pubmed: 36234548
pii: nano12193420
doi: 10.3390/nano12193420
pmc: PMC9565580
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Polytechnic University of Bucharest
ID : The APC was funded by University POLITEHNICA of Bucharest. Proof of concept project.
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