3D scaffolds of caprolactone/chitosan/polyvinyl alcohol/hydroxyapatite stabilized by physical bonds seeded with swine dental pulp stem cell for bone tissue engineering

• Published in: Journal of materials science. Materials in medicine Vol. 33; no. 12; p. 81
• Main Authors: Reyna-Urrutia, V. A., Estevez, Miriam, González-González, A. M., Rosales-Ibáñez, R.
• Format: Journal Article
• Language: English
• Published: New York Springer US 09.12.2022; Springer Nature B.V; Springer
• Subjects: Alizarin; Animals; Biocompatible Materials - chemistry; Biomaterials; Biomedical Engineering and Bioengineering; Biomedical materials; Bonding; Bone and Bones; Bone biomaterials; Bone growth; Bone loss; Bone tumors; Bones; Cell Differentiation; Cell Proliferation; Cell viability; Ceramics; Chemistry and Materials Science; Chitosan; Chitosan - chemistry; Composites; Congenital anomalies; Congenital defects; Cysts; Cytology; Defects; Dental Pulp; Durapatite - chemistry; Freeze drying; Glass; Hydrogels; Hydroxyapatite; In vitro methods and tests; In vivo methods and tests; Materials Science; Mineralization; Natural Materials; Osteoconduction; Osteogenesis; Polymer Sciences; Polyvinyl Alcohol; Pore size; Regeneration; Regeneration (physiology); Regenerative Medicine/Tissue Engineering; Scaffolds; Stem Cells; Surfaces and Interfaces; Swine; Thin Films; Tissue engineering; Tissue Engineering - methods; Tissue Engineering Constructs and Cell Substrates; Tissue Scaffolds - chemistry; Trauma; Tumors
• ISSN: 1573-4838; 0957-4530; 1573-4838
• DOI: 10.1007/s10856-022-06702-2

Bone Regeneration represents a clinical need, related to bone defects such as congenital anomalies, trauma with bone loss, and/or some pathologies such as cysts or tumors This is why a polymeric biomaterial that mimics the osteogenic composition and structure represents a high potential to face this problem. The method of obtaining these materials was first to prepare a stabilized hydrogel by means of physical bonds and then to make use of the lyophilization technique to obtain the 3D porous scaffolds with temperature conditions of −58 °C and pressure of 1 Pa for 16 h. The physicochemical and bioactive properties of the scaffolds were studied. FTIR and TGA results confirm the presence of the initial components in the 3d matrix of the scaffold. The scaffolds exhibited a morphology with pore size and interconnectivity that promote good cell viability. Together, the cell viability and proliferation test, Alamar Blue TM and the differentiation test: alizarin staining, showed the ability of physically stabilized scaffolds to proliferate and differentiate swine dental pulp stem cell (DPSCs) followed by mineralization. Therefore, the Cs-PCL-PVA-HA scaffold stabilized by physical bonds has characteristics that suggest great utility for future complementary in vitro tests and in vivo studies on bone defects. Likewise, this biomaterial was enhanced with the addition of HA, providing a scaffold with osteoconductive properties necessary for good regeneration of bone tissue. Graphical abstract