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Preparation of Extracellular Matrix Paper and Construction of Multi‐Layered 3D Tissue Model

机译:细胞外基质纸张的制备及多层3D组织模型的构建

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摘要

Construction of organized three‐dimensional (3D) tissue with extracellular matrix (ECM) and multiple types of cells is important for tissue engineering to enable tissue function and enhance cellular function. However, the concentration of ECM and thethickness of the 3D tissue have been limited in previous methods due to a lack of permeability to nutrients and oxygen. Besides, it is difficult to use matured natural ECM as a cell scaffold without chemical modification due to its insolubility. In thisarticle, we focus on multi-layered structure, which is commonly found in living tissue such as skin, blood vessels, and other organs. Here, we describe the preparation of a paper‐like scaffold (ECM paper) from micro-fibered natural ECM and the construction of 3D multi-layered tissue composed of cell layers and ECM layers by stacking cell-seeded ECM papers. The thickness and components of the ECM layers are easily controllable by changing the composition of the ECM papers, and the fibrous structure ofECM paper shows high permeability and permits cell migration. Additionally, the ECM microfiber, which is physically defiberized from natural ECM, has a high ECM concentration equal to that of living tissue and high stability under physiological conditions. Therefore, this set of protocols enables construction of multi-layered 3D tissue composed of precisely controlled ECM layers and cell layers that may contribute to the assembly of tissue models.
机译:组织三维(3D)组织的构建与细胞外基质(ECM)和多种类型的细胞对于组织工程是重要的,以实现组织功能和增强蜂窝功能。然而,由于营养和氧气的渗透性缺乏渗透性,在先前的方法中受到了ECM和3D组织的浓度。此外,由于其不溶性,难以使用成熟的天然ECM作为细胞支架而不具有化学改性。在本质上,我们专注于多层结构,通常在皮肤,血管和其他器官等活组织中发现。在这里,我们描述了通过堆叠细胞种子ECM纸的微纤维天然ECM的纸样支架(ECM纸)和由细胞层和ECM层构成的3D多层组织的构建。通过改变ECM纸的组成,ECM层的厚度和组分易于控制,并且纤维结构的纤维结构显示出高渗透性并允许细胞迁移。另外,从天然ECM物理脱屑的ECM超细纤维具有等于生理条件下的高ECM浓度等于生理条件的高稳定性。因此,这组协议使得能够构成由精确控制的ECM层和细胞层构成的多层3D组织,其可以有助于组织模型的组装。

著录项

  • 来源
    《Current Protocols in Cell Biology》 |2020年第1期|共10页
  • 作者单位

    Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry Graduate School of Engineering Osaka University Osaka Japan;

    Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry Graduate School of Engineering OsakaUniversity Osaka Japan;

    Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry Graduate School of Engineering Osaka University Osaka Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

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