Acellular fishbone scaffolds loaded with bone marrow mesenchymal stem cell-derived exosomes for bone defect repairing.

ABSTRACT: Tissue engineering scaffolds remain pivotal in bone defect repair. Contemporary research in this field predominantly focuses on enhancing bone regeneration by optimizing scaffold composition and structure, and incorporating bioactive components. Herein, we developed a decellularized fish bone (DFB) scaffold integrated with hypoxia-osteogenic exosomes (HO-Exos), derived from rat bone marrow mesenchymal stem cells (BMSCs) cultured under 5% oxygen tension with 7-day osteogenic priming, to promote osseous repair via their synergistic effect. The hierarchical porosity of DFB scaffolds creates a biomimetic microenvironment conducive to BMSC adhesion and osteogenic mineralization. Functionally, HO-Exos stimulate osteogenic differentiation of BMSCs via modulation of the Wnt/β-catenin pathway, enha

SUBMITTER: Zhu L 

PROVIDER: S-EPMC12752130 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature