Int J Mol Sci:3D打印血管化骨模拟水凝胶促进成骨和血管生成

2019-03-13 不详 网络

骨是一种高度血管化的组织,具有独特和复杂的结构。长骨由外周皮质壳组成,其包含用于血管穿透的通道网络和内部高度血管化的骨髓空间。3D打印是一种强大的工具,可实现细胞和生物材料的快速精确空间图案化。在这里,我们开发了一种两步数字光处理技术,用于制造基于磷酸八钙(OCP),人脐静脉内皮细胞(HUVEC)球体和甲基丙烯酸明胶(GelMA)水凝胶的骨模拟3D水凝胶构建体。骨模拟3D水凝胶构建体被设计为包含外

骨是一种高度血管化的组织,具有独特和复杂的结构。长骨由外周皮质壳组成,其包含用于血管穿透的通道网络和内部高度血管化的骨髓空间。3D打印是一种强大的工具,可实现细胞和生物材料的快速精确空间图案化。在这里,我们开发了一种两步数字光处理技术,用于制造基于磷酸八钙(OCP),人脐静脉内皮细胞(HUVEC)球体和甲基丙烯酸明胶(GelMA)水凝胶的骨模拟3D水凝胶构建体。

骨模拟3D水凝胶构建体被设计为包含外周OCP的GelMA环以模拟皮质壳,以及包含HUVEC球状体的中央GelMA环以模拟骨髓空间。我们进一步证明,均匀包埋在GelMA中的OCP刺激间充质干细胞的成骨细胞分化。我们改进了球状培养装置的设计,以促进大量HUVEC球状体的快速形成,所述球状体嵌入不同浓度的GelMA水凝胶中。结果表明,GelMA的浓度调节了源自HUVEC球状体的毛细血管样结构的形成程度。

总之,这种具有仿生双环结构的细胞负载的基于水凝胶的骨构建体可以潜在地用于骨组织工程。

原始出处:

Anada T, Pan CC, et al., Vascularized Bone-Mimetic Hydrogel Constructs by 3D Bioprinting to Promote Osteogenesis and Angiogenesis. Int J Mol Sci. 2019 Mar 4;20(5). pii: E1096. doi: 10.3390/ijms20051096.

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    2019-03-15 tastas
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    2019-03-15 智慧医人
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    2019-03-15 zhaojie88
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    2019-03-15 lishizhe