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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Human intraoral harvested mesenchymal stem cells: characterization, multilineage differentiation analysis, and 3-dimensional migration of natural bone mineral and tricalcium phosphate scaffolds.
Journal of Oral and Maxillofacial Surgery 2012 October
PURPOSE: The aim of this study was the establishment of a minimally invasive technique of mesenchymal stem cell (MSC) harvesting and a predictable isolation and cultivation method on 2 different bone substitutes used as potential scaffolds.
MATERIALS AND METHODS: Human MSCs isolated from the posterior maxilla were characterized by flow cytometric analysis. After in vitro expansion, cells were cultured and differentiated toward osteogenic, adipogenic, and chondrogenic lineages in 2-dimensional cultures and on natural bone mineral of bovine origin and β-tricalcium phosphate scaffolds. Three-dimensional growth was analyzed using live cell staining and confocal laser scanning microscopy.
RESULTS: MSCs from all patients demonstrated the same immunophenotype, with expression of CD73, CD90, and CD105 but no expression of CD45, CD34, CD14, CD11, and HLA-DR. The potential of MSCs for multilineage differentiation along osteogenic, adipogenic, and chondrogenic lines was shown. Based on knowledge of the characteristics of the cells, a method was established to increase MSC expansion efficiency and seeding conditions on each scaffold. Results of the in vitro characterization and laser scanning microscopy visualized the 3-dimensional growth of MSCs on the 2 scaffold types.
CONCLUSIONS: The present data showed that intraoral MSCs can be cultured predictably under 2- and 3-dimensional conditions, have proved multiple potencies, and thus seem to be potential candidates for tissue engineering approaches in maxillofacial reconstructions.
MATERIALS AND METHODS: Human MSCs isolated from the posterior maxilla were characterized by flow cytometric analysis. After in vitro expansion, cells were cultured and differentiated toward osteogenic, adipogenic, and chondrogenic lineages in 2-dimensional cultures and on natural bone mineral of bovine origin and β-tricalcium phosphate scaffolds. Three-dimensional growth was analyzed using live cell staining and confocal laser scanning microscopy.
RESULTS: MSCs from all patients demonstrated the same immunophenotype, with expression of CD73, CD90, and CD105 but no expression of CD45, CD34, CD14, CD11, and HLA-DR. The potential of MSCs for multilineage differentiation along osteogenic, adipogenic, and chondrogenic lines was shown. Based on knowledge of the characteristics of the cells, a method was established to increase MSC expansion efficiency and seeding conditions on each scaffold. Results of the in vitro characterization and laser scanning microscopy visualized the 3-dimensional growth of MSCs on the 2 scaffold types.
CONCLUSIONS: The present data showed that intraoral MSCs can be cultured predictably under 2- and 3-dimensional conditions, have proved multiple potencies, and thus seem to be potential candidates for tissue engineering approaches in maxillofacial reconstructions.
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