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首页> 外文期刊>Journal of materials science >Laser-engineered topography: correlation between structure dimensions and cell control
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Laser-engineered topography: correlation between structure dimensions and cell control

机译:激光工程地形:结构尺寸与单元控制之间的关联

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摘要

Topographical cues have a significant impact on cell responses and by this means, on the fabrication of innovative implant materials. However, analysis of cell-topography interactions in dependence of the surface feature dimensions is still challenging due to limitations in the fabrication technology. Here, we introduce surface structuring via picosecond laser systems, which enable a fast production of micro-sized topologies. Changes in the processing parameters further control the feature sizes of so-called spikes. Using surfaces with big and small spike-to-spike-distances for comparisons, we focussed on cell adhesion via extracellular matrix adsorption and focal adhesion complexes, morphology, localisation and proliferation of fibro-blasts. The observed cell control was dependent on a turnover point related to the structure dimensions: only big spike-to-spike-distances reduced cell behaviour. Therefore, this technology offers a platform to study cell and tissue interactions with a defined microenvironment.
机译:地形线索对细胞反应以及通过这种方式对创新植入材料的制造具有重大影响。然而,由于制造技术的限制,依赖于表面特征尺寸的细胞-地形相互作用的分析仍然具有挑战性。在这里,我们介绍通过皮秒激光系统进行的表面结构化,从而可以快速生产出微型拓扑。处理参数的变化进一步控制了所谓尖峰的特征尺寸。使用具有大到小的尖峰到尖峰距离的表面进行比较,我们集中于通过细胞外基质吸附和局灶性粘附复合物的细胞粘附,成纤维细胞的形态,定位和增殖。观察到的细胞控制取决于与结构尺寸有关的周转点:只有大的尖峰到尖峰距离才能减少细胞行为。因此,这项技术提供了一个平台来研究具有定义的微环境的细胞和组织的相互作用。

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  • 来源
    《Journal of materials science》 |2012年第11期|2813-2819|共7页
  • 作者单位

    Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany;

    Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany;

    Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany;

    Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany;

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