富血小板血浆对人成骨样细胞MG63增殖能力的影响

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[摘要] 目的 研究富血小板血浆（PRP）对人成骨样细胞mg63增殖能力的影响，探讨PRP的生物学功能。方法 采集健康志愿者的静脉血，两次离心法制备PRP，氯化钙加人凝血酶激活后离心提取PRP萃取液。碱性磷酸酶（ALP）染色检测不同体积分数PRP（0、1%、2%、3%）对MG63分化活性的影响，碘化丙啶（PI）荧光染色观察PRP作用下MG63细胞形态的变化，免疫细胞化学检测PRP对MG63表达转化生长因子-β（TGF-β）的影响，扫描电子显微镜（SEM）观察PRP对MG63在人工骨材料表面生长情况的影响，CCK-8法检测PRP对MG63增殖活性的影响，流式细胞术（FCM）检

测经PRP培养后不同时间MG63的细胞周期，逆转录聚合酶链反应（RT-PCR）检测PRP作用下MG63中Ⅰ型胶原（Col-Ⅰ）mRNA的表达量。结果 ALP检测见3%PRP组ALP阳性细胞染色最深，并随体积分数的增加染色强度增加，且PRP组细胞均出现不同程度的脱片现象。PI荧光染色见PRP组细胞核荧光染色较对照组增强。免疫细胞化学检测见3%PRP组TGF-β表达量最高（P＜0.05）。SEM观察：PRP组材料表面MG63密集，生长状态良好。CCK-8法测定细胞增殖活性，显示4.8%PRP组吸光度A450 nm值高于对照组（P＜0.05）。FCM检测表明：PRP组第2天S期细胞百分比高于对

照组（P＜0.05）；第10天PRP组G0/G1期细胞百分比高于对照组（P＜0.05）；除第6天外，PRP组G2/M期细胞百分比均高于对照组。RT-PCR结果表明：PRP组MG63的Col-ⅠmRNA表达量较对照组明显上调。结论 适宜体积分数的PRP对MG63的增殖、迁移和相关蛋白、基因的表达有促进作用，PRP具有统一、协调细胞生物学行为的作用。

[关键词] 富血小板血浆； 人成骨样细胞MG63； 细胞增殖

[中图分类号] Q 253 [文献标志码] A [doi] 10.3969/j.issn.1000-1182.2012.02.006

Effect of platelet rich plasma on the proliferation behavior of human MG63 osteoblast-like cells in vitro Wang Yue1, Liu Chunli2, Wang Jing3, Yang Xufang4, Zhou Yanmin1, Ma Yingzhi5. （1. Dept. of Implant Center, School of Sto-matology, Jilin University, Changchun 130021, China; 2. Dept. of Oral and Maxillofacial Surgery, School of Stomato-logy, Jilin University, Changchun 130021, China; 3. Dept. of Stomatology, Nanguan Traditional Chinese Medicial Ho-spital of Changchun City, Changchun 130041, China; 4. Dept. of Pathophysiology, Mudanjiang Medical College, Mu-danjiang 157011, China; 5. Clinic of Flight Training Base, Aeronautical University of Air Force, Changchun 130000, China）

[Abstract] Objective To assess the effect of platelet rich plasma（PRP） on proliferation and differentiation of hu-

man MG63 osteoblast-like cells and the biological function of PRP in vitro. Methods PRP was obtained from venous blood of a health volunteer by two step centrifugation. CaCl2 and thrombin were used to activate PRP. The differentia-tion of MG63 cells, which were exposed to various concentrations of PRP（0, 1%, 2%, 3%） was detected by alkaline

phosphatase（ALP） activity. Propidium iodide（PI） fluorescent coloration staining was used to observe the morphology of cells. Immunocytochemistry was used to evaluate the expression level of transforming growth factor-β（TGF-β） in MG63

cells in different concentration of PRP. The cells adhered to calcium phosphate material was observed by scanning electron microscopy（SEM）. The proliferation was evaluated by cell counting kit-8（CCK-8） proliferation assay. The cell cycle assay was performed by flow cytometry（FCM） to