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3D生物打印支架的微孔结构与孔隙率的研究进展

田银平 刘湘宁 姚洁 谭俊龙 叶辉生

田银平, 刘湘宁, 姚洁, 谭俊龙, 叶辉生. 3D生物打印支架的微孔结构与孔隙率的研究进展[J]. 分子影像学杂志, 2019, 42(1): 81-86. doi: 10.12122/j.issn.1674-4500.2019.01.19
引用本文: 田银平, 刘湘宁, 姚洁, 谭俊龙, 叶辉生. 3D生物打印支架的微孔结构与孔隙率的研究进展[J]. 分子影像学杂志, 2019, 42(1): 81-86. doi: 10.12122/j.issn.1674-4500.2019.01.19
Yinping TIAN, Xiangning LIU, Jie YAO, Junlong TAN, huisheng YE. Research progress in microporous structure and poroisity of 3D bio-printing scaffolds[J]. Journal of Molecular Imaging, 2019, 42(1): 81-86. doi: 10.12122/j.issn.1674-4500.2019.01.19
Citation: Yinping TIAN, Xiangning LIU, Jie YAO, Junlong TAN, huisheng YE. Research progress in microporous structure and poroisity of 3D bio-printing scaffolds[J]. Journal of Molecular Imaging, 2019, 42(1): 81-86. doi: 10.12122/j.issn.1674-4500.2019.01.19

3D生物打印支架的微孔结构与孔隙率的研究进展

doi: 10.12122/j.issn.1674-4500.2019.01.19
基金项目: 广东省自然科学基金(2018A030313614);暨南大学国家级大学生创新创业训练计划项目(201810559023)
详细信息
    作者简介:

    田银平,在读硕士研究生,E-mail: 954317693@qq.com

    通讯作者:

    刘湘宁,博士,副教授,硕士生导师,E-mail: 2003@126.com

Research progress in microporous structure and poroisity of 3D bio-printing scaffolds

  • 摘要: 近年来,3D生物打印受到越来越多研究者的关注,该技术弥补了传统组织工程技术的局限性,它可打印出精准、个性化的支架结构,并可以任意地设计形状、尺寸、孔的结构和孔隙率等。3D生物打印支架在组织工程应用中通常提供结构支撑和适宜的微环境以支持细胞行为,而支架的微孔结构及孔隙率对细胞的行为和健康至关重要,所以3D生物打印支架应该是具有高度多孔和互连的孔网络结构,以促进营养运输、废物排泄和细胞生长增殖分化。本文将综述从无生命到有生命的3D生物打印支架材料和打印方式,以及着重介绍支架的微孔结构及孔隙率相关研究。

     

  • 图  1  无生命生物材料的3种主要的3D打印技术示意图

    A: FAD; B: SLS; CSLA.

    图  2  0°/90°和0°/60°/120°微孔结构的支架形态

    图  3  支架设计及支架上的细胞培养

    a: 柴堆支架的设计; b: 三维木堆支架上的细胞在70%、82%、86%、90%孔隙率支架上培养2周(A~D)、3周(E~H)和6周(I~L)后的情况; c: 在培养3周后, 86%孔隙率支架上细胞的高倍扫描电镜图像(M,N).

    图  4  3种细胞打印技术的示意图

    A: 挤压式生物打印; B: 喷墨式生物打印; C: 光辅助生物打印.

    表  1  不同细胞类型活性所需的各种支架的孔径和孔隙率

    细胞类型 支架材料 孔径(μm) 孔隙率(%) 参考
    小鼠胚胎成纤维细胞 胶原/海藻酸钠纤维凝胶 150~300 90 [24]
    小鼠成骨细胞 氧化石墨烯(GO)-藻酸盐-壳聚糖-胶原(GO-SA-CS-Col) 75~250 78 [25]
    大鼠间充质干细胞 胶原蛋白 200~700 65~90 [26]
    人间充质干细胞 聚氨酸/透明质酸 300~700 - [27]
    大鼠骨髓间充质干细胞 13-93生物活性玻璃/海藻酸钠 500 65~87 [28]
    人骨肉瘤细胞 壳聚糖硫醇聚合物 100~350 90 [29]
    人皮肤成纤维细胞 壳聚糖 52~88 80 [30]
    小鼠胚胎细胞 二醛纤维素纳米晶体/明胶 450~500 95.14 [31]
    兔软骨细胞 壳聚糖/聚己内酯/II型胶原 100~300 75 [32]
    雌性小鼠卵泡 明胶 250~350 - [8]
    大鼠骨髓间充质干细胞 聚-β-羟丁酸 500~700 55.8 [33]
    骨髓间充质干细胞 明胶/聚乳酸/聚己内酯 100 80 [34]
    人间充质干细胞 聚己内酯 245~433 49~57 [19]
    鼠胚胎成纤维细胞 聚己内酯 20~70 80 [35]
    大鼠间充质干细胞 聚己内酯 100~350 90 [36]
    纤人包皮成维细胞 丝素蛋白 200~250 86 [37]
    人软骨细胞 丝素蛋白 100~300 - [38]
    人间充质干细胞 丝素蛋白 204.7~226.5 75.8~84.4 [39]
    下载: 导出CSV

    表  2  两类生物材料3D打印支架的比较

    分类 无生命的3D生物打印支架 有生命的3D生物打印支架
    打印方式 熔融沉积成形;选择性激光烧结;光固化立体印刷 挤压式生物打印;喷墨细胞生物打印;激光辅助生物打印
    支架材料 金属(钛合金、钴铬合金、不锈钢和铝合金等);陶瓷(氧化铝、生物活性玻璃和磷酸钙);高分子聚合物 活细胞混合凝胶类材料(胶原蛋白,明胶,藻酸盐,壳聚糖和透明质酸等)
    优点 机械性能好;高效;低消耗;低成本 仿生;细胞浓度可控且分布均匀;可降解;应用于软组织
    缺点 难以精确控制支架的孔形态、孔径和总孔隙率;需要后期加工处理;接种在支架上的细胞分布不均;耗时 黏度低,机械强度差;细胞技术要求高;生物材料选择种类少;制造平台要求无菌
    下载: 导出CSV
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  • 收稿日期:  2018-10-31
  • 刊出日期:  2019-01-01

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