title: Evaluation of an alginate-gelatine crosslinked hydrogel for bioplotting.
abstract: Using additive manufacturing to create hydrogel scaffolds which incorporate homogeneously distributed, immobilized cells in the context of biofabrication approaches represents an emerging and expanding field in tissue engineering. Applying hydrogels for additive manufacturing must consider the material processing properties as well as their influence on the immobilized cells. In this work alginate-dialdehyde (ADA), a partially oxidized alginate, was used as a basic material to improve the physico-chemical properties of the hydrogel for cell immobilization. At first, the processing ability of the gel using a bioplotter and the compatibility of the process with MG-63 osteoblast like cells were investigated. The metabolic and mitochondrial activities increased at the beginning of the incubation period and they balanced at a relatively high level after 14-28 days of incubation. During this incubation period the release of vascular endothelial growth factor-A also increased. After 28 days of incubation the cell morphology showed a spreading morphology and cells were seen to move out of the scaffold struts covering the whole scaffold structure. The reproducible processing capability of alginate-gelatine (ADA-GEL) and the compatibility with MG-63 cells were proven, thus the ADA-GEL material is highlighted as a promising matrix for applications in biofabrication.
authors: Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstr. 6, D-91058 Erlangen, Germany.
authors: Tobias
authors: T
authors: Zehnder
authors: Bapi
authors: B
authors: Sarker
authors: Aldo R
authors: AR
authors: Boccaccini
authors: Rainer
authors: R
authors: Detsch
mesh_terms: D000464:Alginates / Q000737:chemistry*; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D018914:Cells, Immobilized / Q000378:metabolism; D004797:Enzyme-Linked Immunosorbent Assay; D005780:Gelatin / Q000737:chemistry*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D006801:Humans; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry* / Q000592:standards* / Q000633:toxicity; D008855:Microscopy, Electron, Scanning; D013997:Time Factors; D023822:Tissue Engineering; D054457:Tissue Scaffolds; D042461:Vascular Endothelial Growth Factor A / Q000032:analysis
chemical_list: D000464:Alginates; D006603:Hexuronic Acids; D042461:Vascular Endothelial Growth Factor A; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D020723:Glucuronic Acid; D005780:Gelatin