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Application of PEG and EGCG modified collagen-base membrane to promote osteoblasts proliferation

机译:PEG和EGCG修饰的胶原蛋白基膜在促进成骨细胞增殖中的应用

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摘要

Collagen membranes possess ideal biological properties and can be served as a barrier for supporting infiltration and proliferation of osteoblasts in guided bone regeneration (GBR). However, pure collagen lacks desirable mechanical properties and also leads to inflammation, resulting in progressive bone resorption. In our previous study, EGCG cross-linked collagen membranes exhibit better mechanical properties and anti-inflammatory effect. However, higher concentration of EGCG may not improve cell viability. Herein, we present an enhanced EGCG cross-linked collagen membranes with surface modification of PEG to improve cell viability and cell adhesion, considering the better biocompatibility of PEG. Scanning electron microscope images showed that PEG-EGCG-collagen membrane exhibited smoother surface fiber aggregates. Fourier transform infrared spectroscopy demonstrated that the structure characteristics were maintained after addition of EGCG and PEG. Cell viability was significantly increased after modification of PEG, as determined by the Cell Counting Kit-8 (CCK-8) and live/dead assay. Better shapes of cytoskeleton were observed in immunostaining images. Additionally, enzyme-linked immunosorbent assay showed PEG-EGCG-collagen membrane significantly decreased the level of inflammatory factors secreted by MG63 cells. Collectively, with respect to all the aspects including intact structure, cell viability promotion and mediation of pro-inflammatory cytokine secretion, our results indicate that PEG-EGCG-collagen membrane might be used in GBR applications.
机译:胶原蛋白膜具有理想的生物学特性,可以作为引导成骨细胞再生(GBR)中支持成骨细胞浸润和增殖的屏障。然而,纯胶原蛋白缺乏理想的机械性能,并且还导致炎症,导致进行性骨吸收。在我们之前的研究中,EGCG交联的胶原膜表现出更好的机械性能和抗炎作用。但是,较高浓度的EGCG可能不会改善细胞活力。在本文中,考虑到更好的PEG生物相容性,我们提出了一种经过PEG表面修饰的增强的EGCG交联胶原蛋白膜,以提高细胞活力和细胞粘附性。扫描电子显微镜图像显示PEG-EGCG-胶原膜表现出更光滑的表面纤维聚集体。傅里叶变换红外光谱表明,加入EGCG和PEG后,结构特征得以保持。如细胞计数试剂盒8(CCK-8)和活/死分析所确定,PEG修饰后,细胞活力显着提高。在免疫染色图像中观察到更好的细胞骨架形状。另外,酶联免疫吸附试验显示PEG-EGCG-胶原蛋白膜显着降低了MG63细胞分泌的炎性因子水平。总体而言,就包括完整结构,促进细胞生存力和促炎性细胞因子分泌的介导在内的所有方面而言,我们的结果表明,PEG-EGCG-胶原膜可用于GBR。

著录项

  • 来源
    《Materials science & engineering》 |2017年第7期|31-36|共6页
  • 作者单位

    State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;

    State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;

    Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610041, China;

    State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China,Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;

    State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China,Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;

    State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd section, Renmin South Road, Chengdu 610041, China;

    State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China,Department of Oral Implantology, Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14#, 3rd section, Renmin South Road, Chengdu 610041, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Collagen; PEG; Guide bone regeneration; Osteogenesis; EGCG; Inflammation;

    机译:胶原;PEG;引导骨骼再生;成骨;EGCG;炎;

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