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Micromachines 2016, 7(12), 238; doi:10.3390/mi7120238

Novel Compound-Forming Technology Using Bioprinting and Electrospinning for Patterning a 3D Scaffold Construct with Multiscale Channels

1
Rapid Manufacturing Engineering Center, Shanghai University, Shanghai 200444, China
2
Shanghai Key Laboratory of Intelligent Manufacturing and Roboties, Shanghai University, Shanghai 200444, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Lawrence Kulinsky
Received: 11 October 2016 / Revised: 6 December 2016 / Accepted: 16 December 2016 / Published: 21 December 2016
(This article belongs to the Special Issue Additive Manufacturing for Medical Applications)
View Full-Text   |   Download PDF [5794 KB, uploaded 22 December 2016]   |  

Abstract

One of the biggest challenges for tissue engineering is to efficiently provide oxygen and nutrients to cells on a three-dimensional (3D) engineered scaffold structure. Thus, achieving sufficient vascularization of the structure is a critical problem in tissue engineering. This facilitates the need to develop novel methods to enhance vascularization. Use of patterned hydrogel structures with multiscale channels can be used to achieve the required vascularization. Patterned structures need to be biocompatible and biodegradable. In this study, gelatin was used as the main part of a hydrogel to prepare a biological structure with 3D multiscale channels using bioprinting combined with selection of suitable materials and electrostatic spinning. Human umbilical vein endothelial cells (HUVECs) were then used to confirm efficacy of the structure, inferred from cell viability on different engineered construct designs. HUVECs were seeded on the surface of channels and cultured in vitro. HUVECs showed high viability and diffusion within the construct. This method can be used as a practical platform for the fabrication of engineered construct for vascularization. View Full-Text
Keywords: vascularization; tissue engineering; multiscale channels; 3D bioprinting; human umbilical vein endothelial cells (HUVECs) vascularization; tissue engineering; multiscale channels; 3D bioprinting; human umbilical vein endothelial cells (HUVECs)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sun, Y.; Liu, Y.; Li, S.; Liu, C.; Hu, Q. Novel Compound-Forming Technology Using Bioprinting and Electrospinning for Patterning a 3D Scaffold Construct with Multiscale Channels. Micromachines 2016, 7, 238.

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