胎兔成骨细胞与复合肝细胞生长因子/异种脱蛋白松质骨的体外培养

目的:探讨肝细胞生长因子(HGF)对体外培养的胎兔成骨细胞在异种脱蛋白松质骨(DPB)支架上黏附行为及增殖和分化功能的影响.方法:成骨细胞从胎兔中分离,实验组为HGF/DPB与成骨细胞复合培养,对照组为DPB与成骨细胞常规培养.通过电镜观察成骨细胞在HGF/DPB表面生长与附着状态,同时检测细胞增殖状况和碱性磷酸酶(alkalinephosphatase,ALP)活性等,评价成骨细胞生长情况和细胞活性.结果:成骨细胞在复合肝细胞生长因子脱蛋白骨外表面及孔隙内表面均可贴附生长,增殖、分化良好.HGF/DPB对成骨细胞的ALP活性有明显的促进作用,并能促进成骨细胞的增殖.结论:HGF/DPB具有良好的生物相容性和骨诱导作用,可作为骨组织工程备选的复合支架材料.

Biocompatibility of combined deproteinized bone coated with hepatocyte growth factor as scaffold for osteoblasts in vitro in fetal rabbits

OBJECTIVE: To determine the cellular compatibility of combined deproteinized bone(DPB) coated with hepatocyte growth factor (HGF), and to observe the adherent effect of osteoblasts in response to HGF. METHODS: Osteoblasts were isolated from fetal rabbits. Osteoblasts were cultured with DPB coated with HGF and deproteinized bone as experimental group and contral group, respectively. The proliferation and alkalinephosphatase activity were tested. Their growth was examined by inverted phase contrast microscope and scanning electronmicroscope. RESULTS: The osteoblasts were attached to the outside and inside surfaces and grew well. HGF/DPB could stimulate the alkalinephosphatase activity of the osteoblasts and improve the proliferation of the osteoblasts. Conclusion: HGF/DPB has good biocompatibility and bone induction. HGF could improve the adherent effect of DPB on osteoblasts, and it could be used as scaffold material for the bone tissue engineering.