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Using Multilayered Hydrogel Bioink in Three-Dimensional Bioprinting for Homogeneous Cell Distribution
Published on: May 2, 2020
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Optimization of a 3D bioprinting process using ultrashort peptide bioinks
Zainab Khan1,2, Kowther Kahin1,2, Sakandar Rauf1
1Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering, King Abdullah, University of Science and Technology, Thuwal, Saudi Arabia.
International Journal of Bioprinting
|August 13, 2020
Summary
A novel vacuum system enhances three-dimensional (3D) bioprinting by improving scaffold precision and stability. This advancement in tissue engineering supports cell viability and enables the creation of higher, more refined 3D bioprinted structures.
Area of Science:
- Biomedical Engineering
- Materials Science
- Regenerative Medicine
Background:
- The increasing demand for organ transplants highlights the need for advanced tissue engineering solutions.
- Three-dimensional (3D) bioprinting offers a promising additive manufacturing approach for fabricating functional tissues and organs.
- Current 3D bioprinting methods using hydrogel bioinks face challenges in achieving well-structured constructs due to difficulties in removing encapsulated fluids without compromising cell viability and structural integrity.
Purpose of the Study:
- To develop and integrate a vacuum system into a 3D bioprinting robotic arm to optimize the printing quality of complex scaffolds.
- To address the challenge of removing excess liquid from peptide hydrogel bioinks during the 3D bioprinting process.
- To enhance the resolution, stability, and structural integrity of 3D bioprinted constructs, including those incorporating viable cells.
Main Methods:
- Integration of a novel vacuum system with a 3D bioprinting robotic arm.
- Optimization of printing parameters, including flow rates and precision, in conjunction with the vacuum system.
- Evaluation of the vacuum system's impact on hydrogel bioink properties, fluid removal, and cell viability during the printing process.
Main Results:
- The integrated vacuum system significantly improved the printing resolution and quality of complex 3D scaffolds.
- The system effectively removed excess encapsulated fluids from peptide hydrogel bioinks without compromising the printing process or cell viability.
- The optimized 3D bioprinting process facilitated the fabrication of higher and more stable 3D structures, demonstrating enhanced structural integrity.
Conclusions:
- The developed vacuum system is a valuable addition to 3D bioprinting technology, enabling the production of more refined and stable tissue constructs.
- This innovation addresses a critical limitation in hydrogel-based bioprinting, paving the way for improved tissue engineering applications.
- The enhanced 3D bioprinting capabilities, including support for cell printing, hold significant potential for advancing regenerative medicine and organ fabrication.
