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Single-Step 3D Bioprinting of Alginate-Collagen Type I Hydrogel Fiber Rings to Promote Angiogenic Network Formation
Ying Betty Li1,2, Marina Rukhlova1, Dongling Zhang1
1Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, Canada.
Tissue Engineering. Part C, Methods
|July 1, 2024
Summary
Researchers developed a novel 3D bioprinting method to create vascular structures using endothelial cells. This technique enables the formation of organized vascular networks, advancing tissue engineering and drug discovery.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Increasing demand for advanced biofabrication techniques in regenerative medicine.
- Need for innovative methods to create complex vascular structures for tissue engineering applications.
Purpose of the Study:
- To develop and present a single-step 3D bioprinting method for fabricating vascular structures.
- To investigate the potential of this method for creating organized vascular networks and supporting cell growth.
Main Methods:
- Utilized Aspect Biosystems RX1 technology for single-step 3D bioprinting.
- Biofabricated hydrogel rings encapsulating immortalized adult rat brain endothelial cells (SV-ARBECs) using alginate-collagen type I.
- Employed a flow-focusing junction for integrated crosslinking during layer-by-layer assembly.
Main Results:
- Successfully biofabricated hydrogel rings with spatially controlled SV-ARBECs.
- Observed spontaneous angiogenic network formation within the constructs.
- Demonstrated the development of tissue-like organized vascular-like networks due to constrained cell deposition.
Conclusions:
- The single-step 3D bioprinting method is effective for creating vascular structures.
- This platform facilitates the study of angiogenesis and vascular network formation.
- The approach supports the development of advanced tissue and disease models for drug discovery and regenerative medicine.
