Related Experiment Video
Updated: Sep 4, 2025
05:52
Core/shell Printing Scaffolds For Tissue Engineering Of Tubular Structures
Published on: September 27, 2019
9.5K
3D BIOPRINTING OF SCAFFOLD STRUCTURE USING MICRO-EXTRUSION TECHNOLOGY
Juan Xing1, Xianli Luo1, Juliana Bermudez1
1Department of Manufacturing Systems Engineering and Management, California State University, Northridge, CA 91330-8332.
Solid Freeform Fabrication Symposium Proceedings. Solid Freeform Fabrication Symposium
|July 18, 2022
Summary
Researchers developed a custom micro-extrusion bioprinting system to create intricate scaffold structures using hydrogels. This novel approach enables precise fabrication of microscale channels for potential tissue engineering applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Microfabrication
Background:
- Scaffold-based techniques are crucial for supporting and enhancing the resolution of target structures in tissue engineering.
- Existing methods may have limitations in fabricating complex microscale architectures.
Purpose of the Study:
- To develop and utilize a custom micro-extrusion bioprinting system for fabricating diverse scaffold structures.
- To demonstrate the capability of producing microscale channels with arbitrary shapes.
Main Methods:
- Fabrication of scaffolds using a custom 3D bioprinter with a hydrogel solution (Pluronic F-127).
- Post-printing processing involving washing away hydrogen with phosphate-buffered saline (PBS) after crosslinking.
- Utilizing G-code data fed into a user interface (Pronterface) and a customized programming language to control nozzle dispensing.
Main Results:
- Successful fabrication of distinct scaffold structures, including log-pile and two-ring designs.
- Demonstrated ability to create microscale channels with high shape fidelity.
- Validation of the custom bioprinting system's precision and versatility.
Conclusions:
- The custom micro-extrusion bioprinting system shows significant potential for fabricating complex scaffold architectures.
- This technique offers precise control over microchannel formation, essential for advanced tissue engineering.
- The study lays the groundwork for printing viable and complex tissue shapes with living cells.
