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具有水凝胶微纤维的3D打印高分辨率支架,用于提供优异的生物相容性。

3D printed high-resolution scaffold with hydrogel microfibers for providing excellent biocompatibility.

作者信息

Ye Wenjie, Xie Chaoqi, Liu Yande, He Yong, Gao Qing, Ouyang Aiguo

机构信息

Institute of Optical and Electromechanical Technology and Applications, School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China.

Engineering for Life Group (EFL), China.

出版信息

J Biomater Appl. 2021 Jan;35(6):633-642. doi: 10.1177/0885328220962606. Epub 2020 Sep 30.

Abstract

Melt electrowriting (MEW) can print high-resolution scaffolds with the ultrafine fibers from 800 nm to 20 µm. However, the cell seeding efficiency relatively low due to the large pore size of the MEW scaffold. Here, we reported a method to solve this dilemma by electrospinning a gelatin methacrylate (GelMA) hydrogel fibers membrane (HFM) on the MEW scaffold. This composite scaffold can own the controlled structures and porosity and excellent cell seeding performance. We systematically investigate the fabrication, morphology, and biocompatibility of composite scaffolds. The implanting of human umbilical vein endothelial cells(HUVES) showed excellent adhesion and biocompatibility on the composite scaffold. Moreover, the cells migrated gradually into the MEW scaffold along the GelMA HFM to form the cell sheet. We hold the opinion that the composite scaffolds have potential applications in the field of tissue engineering repair.

摘要

熔体静电写入(MEW)能够打印出具有800纳米至20微米超细纤维的高分辨率支架。然而,由于MEW支架的孔径较大,细胞接种效率相对较低。在此,我们报道了一种通过在MEW支架上电纺甲基丙烯酸明胶(GelMA)水凝胶纤维膜(HFM)来解决这一难题的方法。这种复合支架能够拥有可控的结构和孔隙率以及优异的细胞接种性能。我们系统地研究了复合支架的制造、形态和生物相容性。人脐静脉内皮细胞(HUVES)的植入显示出在复合支架上具有优异的粘附性和生物相容性。此外,细胞沿着GelMA HFM逐渐迁移到MEW支架中以形成细胞片。我们认为这种复合支架在组织工程修复领域具有潜在的应用。

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