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Surface functionalization of calcium magnesium phosphate cements with alginate sodium for enhanced bone regeneration via TRPM7/PI3K/Akt signaling pathway.
- Source :
-
International Journal of Biological Macromolecules . May2024:Part 1, Vol. 266, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Although calcium‑magnesium phosphate cements (CMPCs) have been widely applied to treating critical-size bone defects, their repair efficiency is unsatisfactory owing to their weak surface bioactivity and uncontrolled ion release. In this study, we lyophilized alginate sodium (AS) as a coating onto HAp/K-struvite (H@KSv) to develop AS/HAp/K-struvite (AH@KSv), which promotes bone regeneration. The compressive strength and hydrophilicity of AH@KSv significantly improved, leading to enhanced cell adhesion in vitro. Importantly, the SA coating enables continuous ions release of Mg2+ and Ca2+, finally leading to enhanced osteogenesis in vitro/vivo and different patterns of new bone ingrowth in vivo. Furthermore, these composites increased the expression levels of biomarkers of the TRPM7/PI3K/Akt signaling pathway via an equilibrium effect of Mg2+ to Ca2+. In conclusion, our study provides novel insights into the mechanisms of Mg-based biomaterials for bone regeneration. • Novel scaffold (AH@KSv) with improved surface bioactivity were successfully prepared via the lyophilization method. • AH@KSv enhances in vitro / in vivo osteogenesis in bone regeneration. • Regulatory mechanisms of TRPM7/PI3K/Akt signaling pathway are related to equilibrium effect of Mg2+ to Ca2+. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01418130
- Volume :
- 266
- Database :
- Academic Search Index
- Journal :
- International Journal of Biological Macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 176810042
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2024.130998