首页> 外文学位 >Evaluating hydroxyapatite microcarriers for the attachment, proliferation, and osteoblastic differentiation of human adult stem cells and a human osteosarcoma cell line.
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Evaluating hydroxyapatite microcarriers for the attachment, proliferation, and osteoblastic differentiation of human adult stem cells and a human osteosarcoma cell line.

机译:评估羟基磷灰石微载体对人成年干细胞和人骨肉瘤细胞系的附着,增殖和成骨细胞分化的作用。

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摘要

The delivery of human adult mesenchymal stem cells (hAMSC) using CaPSphers is a novel approach for use in bone tissue engineering. CaPSphers are calcium- and phosphate-based, biocompatible, and bioresorbable microcarriers that may serve as a delivery vehicle for hAMSC to critical-sized bone defects unable to heal by natural means. CaPSphers loaded with cells offer the advantage of being able to place a large number of cells directly and controllably in a wound site or on a tissue engineering scaffold. hAMSC attached to CaPSpers as determined by cell staining and scanning electron microscopy, and proliferated to yield several hundred hAMSC per CaPSpher two weeks after initial cell seeding. Under static culture conditions, approximately 30% of the available CaPSphers are seeded with hAMSC. hAMSC on CaPSphers cultured in the presence of an osteogenic supplement differentiated into osteoblasts as indicated by the expression of alkaline phosphatase activity. Cells of the MG-63 human osteosarcoma cell line also attached, proliferated, and differentiated as osteoblasts while cultured on CaPSphers. Thus, based on these in vitro results, CaPSphers may prove to be a useful vehicle to deliver adult stem cells for tissue engineering.
机译:使用CaPSphers递送人成人间充质干细胞(hAMSC)是一种用于骨组织工程的新方法。 CaPSphers是基于钙和磷酸盐的生物相容性和生物可吸收性微载体,可作为hAMSC输送至无法通过自然手段治愈的关键尺寸骨缺损的载体。装有细胞的CaPSpher提供的优势是能够直接和可控制地将大量细胞放置在伤口部位或组织工程支架上。通过细胞染色和扫描电子显微镜确定,hAMSC附着在CaPSper上,并在初始细胞接种后两周增殖,每个CaPSpher产生数百个hAMSC。在静态培养条件下,大约30%的可用CaPSphers接种了hAMSC。如碱性磷酸酶活性的表达所表明的,在成骨细胞分化成成骨细胞的成骨细胞存在下培养的CaPSphers上的hAMSC。在CaPSphers上培养时,MG-63人骨肉瘤细胞系的细胞也附着,增殖并分化为成骨细胞。因此,基于这些体外结果,CaPSphers可能被证明是递送成人干细胞用于组织工程的有用载体。

著录项

  • 作者

    Loveland, Amy N.;

  • 作者单位

    Duquesne University.;

  • 授予单位 Duquesne University.;
  • 学科 Engineering Biomedical.; Biology Cell.
  • 学位 M.S.
  • 年度 2003
  • 页码 63 p.
  • 总页数 63
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物医学工程;细胞生物学;
  • 关键词

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