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Material-Driven Fibronectin Assembly Promotes Maintenance of Mesenchymal Stem Cell Phenotypes

机译:材料驱动的纤连蛋白大会促进间充质干细胞表型的维持。

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摘要

Mesenchymal stem cells (MSCs) are a research tool to investigate fundamental biology and are candidates for use in regenerative medicine. In this context, significant efforts have been devoted to develop technologies to control stem cell fate, including the use of soluble factors in media. However, material properties offer alternative approaches that avoid the use of soluble factors. Here, a material system capable of sustaining the growth of stem cells (maintaining stemness) and of promoting highly efficient differentiation upon external stimulation is described. Poly(ethyl acrylate) induces assembly of fibronectin (FN) into nanonetworks (FN fibrillogenesis) upon simple adsorption from solutions. It is shown that these FN nanonetworks allow growth of MSCs and maintenance of stemness for long periods of time (up to 30 d) using basal media in absence of soluble factors. Additionally, the system promotes enhanced levels of differentiation when defined supplemented media are used. The study reveals the critical role of the intermediate protein layer at the material interface to control MSC fate regardless of the properties of the underlying material and it introduces a new material system as a candidate to be used in MSC niche design.
机译:间充质干细胞(MSC)是研究基础生物学的研究工具,是再生医学的候选药物。在这种情况下,已经投入了巨大的努力来开发控制干细胞命运的技术,包括在培养基中使用可溶性因子。但是,材料属性提供了避免使用可溶性因子的替代方法。在此,描述了一种能够维持干细胞生长(维持干性)并在外部刺激下促进高效分化的材料系统。从溶液中简单吸附后,聚丙烯酸乙酯可诱导纤连蛋白(FN)组装成纳米网络(FN纤维形成)。结果表明,这些FN纳米网络允许在不存在可溶性因子的情况下使用基础培养基长期(长达30 d)使MSCs生长并保持茎干。另外,当使用定义的补充培养基时,系统促进分化水平的提高。这项研究揭示了中间蛋白层在材料界面上对控制MSC命运的关键作用,无论基础材料的特性如何,并且引入了一种新的材料系统作为MSC生态位设计的候选材料。

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  • 来源
    《Advanced Functional Materials》 |2016年第36期|6563-6573|共11页
  • 作者单位

    Biomed Res Networking Ctr Bioengn Biomat & Nanome, Camino Vera S-N, Valencia 46022, Spain|Univ Politecn Valencia, Ctr Biomat & Tissue Engn CBIT, Camino Vera S-N, E-46022 Valencia, Spain;

    Univ Politecn Valencia, Ctr Biomat & Tissue Engn CBIT, Camino Vera S-N, E-46022 Valencia, Spain;

    Univ Glasgow, CMVLS, Ctr Cell Engn, Inst Mol Cell & Syst Biol, Joseph Black Bldg, Glasgow G12 8QQ, Lanark, Scotland;

    Univ Glasgow, Sch Engn, Div Biomed Engn, Rankine Bldg, Glasgow G12 8LT, Lanark, Scotland;

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