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Macrotopographic closure promotes tissue growth and osteogenesis in vitro

机译:Macotopographic Closure在体外促进组织生长和骨质发生

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摘要

While the impact of substrate topographies at nano- and microscale on bone cell behavior has been particularly well documented, very few studies have analyzed the role of substrate closure at a tissular level. Moreover, these have focused on matrix deposition rather than on osteoblastic differentiation. In the present work, mouse calvaria cells were grown for 15 days on hydroxyapatite (HA) ceramics textured with three different macrogrooves shapes (**100 mu m): 1 sine and 2 triangle waveforms. We found that macro topography favors cell attachment, and that bone-like tissue growth and organization are promoted by a tight "closure angle" of the substrate geometry. Interestingly, while Flat HA controls showed little marker expression at the end of the culture, cells grown on macrogrooves, and in particular the most closed (triangle waveform with a 517 pm spatial period) showed a fast time-course of osteoblast differentiation, reaching high levels of gene and protein expression of osteocalcin and sclerostin, a marker of osteocytes.
机译:虽然纳米和微尺寸在骨细胞行为上的底物地形的影响特别详细,但很少有研究分析了基材闭合在组织水平上的作用。此外,这些聚焦在基质沉积上而不是骨细胞分化。在目前的工作中,小鼠Calvaria细胞在羟基磷灰石(HA)陶瓷上生长15天,织地不到三种不同的宏指口形状(** 100 mu m):1正弦和2三角形波形。我们发现宏观形貌求利于细胞附着,并且通过基板几何形状的紧密“闭合角度”来促进骨状组织生长和组织。有趣的是,扁平HA控制在培养物结束时表现出很少的标记表达,在宏观树叶中种植的细胞,特别是最闭合的(三角形波形,具有517pm的空间时段)显示出快速的成骨细胞分化,达到高骨钙蛋白和溶血蛋白的基因和蛋白质表达水平,骨细胞标志物。

著录项

  • 来源
    《Acta biomaterialia》 |2017年第2017期|共13页
  • 作者单位

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Ecole Natl Ingenieurs St Etienne LTDS CNRS UMR 5513 F-42023 St Etienne France;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

    Univ Jean Monnet Univ Lyon Lab Biol Tissus Osteoarticulaires INSERM U1059 F-42023 St Etienne;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 普通生物学;
  • 关键词

    Osteoblast differentiation; Bioceramics; Substrate closure; Macrotopography;

    机译:成骨细胞分化;生物陶瓷;衬底闭合;宏观文献;

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