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3D Printed Porous Cellulose Nanocomposite Hydrogel Scaffolds
Published on: April 24, 2019
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Projection-Based 3D Printing of Cell Patterning Scaffolds with Multiscale Channels
Dai Xue1, Yancheng Wang, Jiaxin Zhang2
1Department of NanoEngineering , University of California , San Diego , California 92093 , United States.
ACS Applied Materials & Interfaces
|May 22, 2018
Summary
This study introduces a 3D printing system for creating intricate hydrogel scaffolds, enabling precise multiscale cell patterning for advanced tissue engineering models like organoids and organs-on-a-chip.
Area of Science:
- Biotechnology
- Tissue Engineering
- Biofabrication
Background:
- Precise in vitro cell patterning is crucial for developing advanced biological models.
- Current methods face challenges in achieving multiscale cell patterning (10 μm to 10 mm).
Purpose of the Study:
- To develop a rapid, high-resolution 3D printing system for multiscale cell patterning.
- To fabricate biocompatible hydrogel scaffolds with intricate channel architectures.
Main Methods:
- Utilized a projection-based 3D printing system with poly(ethylene glycol)diacrylate.
- Fabricated diverse scaffold geometries, including biomimetic networks.
- Assessed scaffold stability, transport properties, and cell adhesion.
Main Results:
- Successfully printed hydrogel scaffolds with channels ranging from ∼17 μm to >1100 μm.
- Scaffolds demonstrated stability in culture conditions and suitability for nutrient transport.
- Human lung cancer cells adhered and penetrated the scaffold channels effectively.
Conclusions:
- The developed 3D printing system enables rapid, high-resolution fabrication of complex hydrogel scaffolds.
- These scaffolds support multiscale cell patterning, crucial for mimicking natural microenvironments in vitro.
- The technology holds promise for advancing tissue engineering and the development of organoid and organs-on-a-chip models.
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