生物衍生骨支架材料的体外细胞相容性实验研究

目的 评价不同处理方法制备的生物衍生骨支架材料的细胞相容性。方法 将支架材料，即复合型完全脱蛋白骨（CFDB）、部分脱蛋白骨（PDPB）和部分脱钙骨（PDCB）与人胚骨膜来源的成骨细胞体外复合培养，采用倒置相差显微镜、激光共聚焦显微镜、扫描电镜、流式细胞仪及碱性磷酸酶（ALP）活性检测,观察支架材料的细胞相容性。结果 三种材料上皆有细胞附着生长，三种材料对细胞增殖影响大小为PDCB＞PDPB＞CFDB；三种材料对成骨细胞的细胞周期影响较小，未见异倍体细胞；三种材料对成骨细胞ALP活性的影响大小依次为PDCB＞PDPB＞CFDB。结论 CFDB、PDPB及PDCB无细胞毒性、无致瘤性，皆有良好的细胞相容性，以CFDB为最好。三种材料皆可用于骨组织工程的支架材料。

CELLULAR COMPATIBILITY OF THREE NATURAL XENOGENEIC BONE DERIVED BIOMATERIALS

OBJECTIVE: To evaluate the cellular compatibility of three natural xenogeneic bone derived biomaterials. METHODS: Three types of natural xenogeneic bone derived biomaterials were made with physical and chemical treatment, composite fully deproteinized bone(CFDB), partially deproteinized bone(PDPB) and partially decalcified bone(PDCB). Three types biomaterials were cocultured with human embryonic periosteal osteoblasts. The cell growth, attachment, cell cycle, alkaline phosphatase activity were detected to evaluate the cellular compatibility to biomaterials. RESULTS: Osteoblasts attached on all three biomaterials and grew well, the effect of three biomaterials on cell proliferation was PDCB > PDPB > CFDB. The cell cycle was not obviously affected by three biomaterials. The effect of three biomaterials on alkaline phosphatase activity of osteoblasts was PDCB > PDPB > CFDB. CONCLUSION: CFDB,PDPB,PDCB have good cellular compatibility without cytotoxic and tumorigenicity, CFDB is the best. The three biomaterials can be used as scaffold materials of bone tissue engineering.