中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (10): 1501-1507.doi: 10.3969/j.issn.2095-4344.2017.10.005

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

成骨细胞膜片在不同钛表面骨桥蛋白基因和蛋白的表达

吴  镭1,夏  茜2,毛久凤3,郭  艺1,曾  筱4,李  治1,王碧超5,董  强4   

  1. 1贵州医科大学,贵州省贵阳市  550004;贵州医科大学附属口腔医院,2口腔内科,4口腔修复科,5口腔正畸学教研室,贵州省贵阳市  550004;3贵州医科大学附属省人民医院口腔修复科,贵州省贵阳市  550004
  • 收稿日期:2017-02-14 出版日期:2017-04-08 发布日期:2017-05-08
  • 通讯作者: 董强,主任医师,教授,贵州医科大学附属口腔医院口腔修复科,贵州省贵阳市 550004
  • 作者简介:吴镭,男,1990年生,广西壮族自治区桂平市人,汉族,贵州医科大学在读硕士,主要从事骨组织工程研究。
  • 基金资助:

    贵州省科技厅省校合作协议项目(黔科合LH字[2014]7115号);贵阳市科技计划项目(筑科合同[20141001]39号)

Expression of osteopontin mRNA and protein in osteoblast cell sheets cultured on different titanium surfaces

Wu Lei1, Xia Qian2, Mao Jiu-feng3, Guo Yi1, Zeng Xiao4, Li Zhi1, Wang Bi-chao5, Dong Qiang4   

  1. 1 Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2 Department of Oral Medicine, 4 Department of Prosthodontics, 5 Department of Orthodontics, the Affiliated Stomatological Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 3 Department of Prosthodontics, Guizhou Provincial Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Received:2017-02-14 Online:2017-04-08 Published:2017-05-08
  • Contact: Dong Qiang, Chief physician, Professor, Department of Prosthodontics, the Affiliated Stomatological Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Wu Lei, Studying for master’s degree, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:

    the Guizhou Province & University Cooperation Projects of the Guizhou Provincial Science and Technology Department, No. [2014]7115; Guiyang Municipal Science and Technology Project, No. [20141001]39

摘要:

文章快速阅读:

 

文题释义:
细胞膜片技术
:无须支架材料和酶的消化,通过刺激细胞外基质分泌而形成致密膜片组织,能有效修复组织缺损和改善器官功能。
物理刮取法:无需特殊材料或设备,细胞自分泌的外基质形成膜片后,以细胞刮刀由外周向中心沿培养皿底壁仔细刮起,即可获得完整的细胞膜片,是一种更为简单易行的细胞膜片刮取方法。

背景:对钛种植体表面改性是口腔种植骨整合界面研究的重要方法之一,能否通过细胞膜片技术在不同钛表面上实现更好的骨再生效应?
目的:初步研究成骨细胞膜片在不同钛表面上的成骨效应。
方法:取第3代新生SD大鼠成骨细胞,分别接种于光滑钛表面、喷砂酸蚀钛表面、阳极氧化钛表面,体外构建成骨细胞膜片。接种7,14 d,通过物理刮取法获得成骨细胞膜片,倒置显微镜下观察细胞膜片;采用RT-qPCR 检测成骨细胞骨桥蛋白基因的表达,Western blotting检测成骨细胞骨桥蛋白的表达。
结果与结论:①倒置显微镜下观察:接种第7天,细胞密集,钛片边缘与孔壁间细胞生长良好,呈梭形生长,相互有基质连接,近边缘部偶见细胞生长密集区呈云雾状;接种第14天,细胞膜片中部细胞均匀且重叠生长,形态、界限不清,边缘呈均匀重叠的云雾状;②骨桥蛋白表达:接种于喷砂酸蚀钛表面、阳极氧化钛表面的成骨细胞骨桥蛋白表达量均高于接种于光滑钛表面的成骨细胞(P < 0.05),接种于喷砂酸蚀钛表面与阳极氧化钛表面的成骨细胞骨桥蛋白表达量比较差异无显著性意义;接种于不同材料表面14 d的成骨细胞骨桥蛋白表达均高于对应的7 d表达量(P < 0.05);③结果表明:相比光滑钛片,喷砂酸蚀及阳极氧化钛片对成骨细胞增殖分化有更显著的促进作用。

ORCID: 0000-0001-8211-7138(董强)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 生物材料, 口腔生物材料, 成骨细胞膜片, 阳极氧化钛表面, 喷砂酸蚀钛表面, 骨桥蛋白

Abstract:

BACKGROUND: Modifying the titanium implant surface is an important method in the bone-implant osseointegration. Can the cell sheet technology realize better bone regeneration on different titanium surfaces?
OBJECTIVE: To primarily study the osteogenetic effect of osteoblast cell sheets on different titanium surfaces.
METHODS: Passage 3 osteoblasts from newborn Sprague-Dawley rats were seeded onto smooth titanium surface, anodic oxidation titanium surface, and sand-blasting/acid-etching titanium surface respectively, to make osteoblast cell sheets in vitro. At 7 and 14 days after inoculation, osteoblast cell sheets were obtained by physical scraping method and observed under inverted microscope. The expression of osteopontin mRNA and protein in osteoblasts was detected through RT-qPCR and western blot, respectively.
RESULTS AND CONCLUSION: (1) Observation with the inverted microscope: on day 7, in the gap between the titanium plate edge and the pore wall, the cells grew well in spindle shape, mutual connection matrix was found, but occasional cloud-shape cell growth was detective in dense areas close to the edge; on day 14, the growth of cells in the center area of the osteoblast cell sheets showed uniformity and overlap, the cell morphology and boundary were not clear, and the edge of the osteoblast cell sheets showed overlapping cloud shape. (2) Expression of osteopontin: the expression of osteopontin in osteoblast cells inoculated onto sand-blasting/acid-etching titanium surface and anodic oxidation titanium surface was significantly higher than that on the smooth titanium surface (P < 0.05); however, the expression of osteopontin in osteoblasts inoculated onto anodic oxidation titanium surface and sand-blasting/ acid-etching titanium surface had no statistically significant difference. The expression of osteopontin in osteoblasts on different titanium surfaces inoculated on day 14 was significantly higher than that on day 7 (P < 0.05). To conclude, sand-blasting/acid-etching titanium surface and anodic oxidation titanium surface play more significant role in promoting osteoblasts proliferation and differentiation than the smooth titanium surface. 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Titanium, Osteoblasts, Osteopontin, Tissue Engineering

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