COMBINATION OF BONE MORPHOGENETIC PROTEIN-2 PLASMID DNA WITH CHEMOKINE CXCL12 CREATES AN ADDITIVE EFFECT ON BONE FORMATION ONSET AND VOLUME

被引:0
作者
Wegman, F. [1 ]
Poldervaart, M. T. [1 ]
van der Helm, Y. J. [1 ]
Oner, F. C. [1 ]
Dhert, W. J. [1 ,2 ]
Alblas, J. [1 ]
机构
[1] Univ Med Ctr Utrecht, Dept Orthopaed, NL-3508 GA Utrecht, Netherlands
[2] Univ Utrecht, Fac Vet Med, NL-3584 CL Utrecht, Netherlands
关键词
Gene therapy; bone; tissue engineering; bone morphogenetic protein-2; stromal cell-derived factor-1 alpha; multipotent stromal cells; controlled release; animal model; MESENCHYMAL STEM-CELLS; DRUG-RELEASE; FACTOR-I; PROGENITOR CELLS; GENE-THERAPY; DELIVERY; RECRUITMENT; GELATIN; VASCULARIZATION; BIODEGRADATION;
D O I
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中图分类号
Q813 [细胞工程];
学科分类号
摘要
has shown to induce bone formation in vivo in cell-based tissue engineering. In addition, the chemoattractant stromal cell-derived factor-1 alpha (SDF-1 alpha, also known as CXCL12) is known to recruit multipotent stromal cells towards its release site where it enhances vascularisation and possibly contributes to osteogenic differentiation. To investigate potential cooperative behaviour for bone formation, we investigated combined release of BMP-2 and SDF-1 alpha on ectopic bone formation in mice. Multipotent stromal cell-seeded and cell-free constructs with BMP-2 plasmid DNA and /or SDF-1 alpha loaded onto gelatin microparticles, were implanted subcutaneously in mice for a period of 6 weeks. Histological analysis and histomorphometry revealed that the onset of bone formation and the formed bone volume were both enhanced by the combination of BMP-2 and SDF-1 alpha compared to controls in cell-seeded constructs. Samples without seeded multipotent stromal cells failed to induce any bone formation. We conclude that the addition of stromal cell-derived factor-1 alpha to a cell-seeded alginate based bone morphogenetic protein-2 plasmid DNA construct has an additive effect on bone formation and can be considered a promising combination for bone regeneration.
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页码:1 / 11
页数:11
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