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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:None

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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