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Effect of different growth factors on human osteoblasts activities: A possible application in bone regeneration for tissue engineering.

机译:不同生长因子对人成骨细胞活性的影响:在组织工程的骨再生中的可能应用。

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Cultured human primary osteoblasts reproduce the phenotypic differentiation and maturation of cells in vivo. We have investigated the influence of three isoforms of transforming growth factor beta (TGF-beta1, TGF-beta2 and TGF-beta3), three fibroblast growth factors (FGF-2, FGF-4 and FGF-6) and the active metabolite of Vitamin D [1,25-(OH)(2)D3] on proliferation, alkaline phosphatase activity and mineralization of human osteoblasts during a period of 24 days of culture. TGF-beta isoforms and three FGFs examined have been proved to be inducers of osteoblasts proliferation (higher extent for TGF-beta and FGF-2) and inhibitors of alkaline phosphatase activity and osteoblasts mineralization. Combination of these growth factors with the active form of Vitamin D induced osteodifferentiation. In fact Vitamin D showed an additive effect on alkaline phosphatase activity and calcium content, induced by FGF-2 and TGF-beta in human osteoblast. These results highlight the potential of proliferating cytokines' combination with mineralizing agents for in vitro bone growth induction in bone tissue engineering.
机译:培养的人原代成骨细胞在体内复制细胞的表型分化和成熟。我们研究了转化生长因子β的三种同工型(TGF-beta1,TGF-beta2和TGF-beta3),三种成纤维细胞生长因子(FGF-2,FGF-4和FGF-6)以及维生素的活性代谢物的影响D [1,25-(OH)(2)D3]对培养24天人类成骨细胞的增殖,碱性磷酸酶活性和矿化作用的影响。 TGF-β同工型和3种FGF被证明是成骨细胞增殖的诱因(TGF-β和FGF-2的程度更高)和碱性磷酸酶活性和成骨细胞矿化的抑制剂。这些生长因子与维生素D活性形式的组合可诱导骨分化。实际上,维生素D对人类成骨细胞中FGF-2和TGF-β诱导的碱性磷酸酶活性和钙含量具有累加作用。这些结果突出了增生细胞因子与矿化剂结合在骨组织工程中体外诱导骨生长的潜力。

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