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Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip
Published on: October 21, 2013
Functional endothelialized microvascular networks with circular cross-sections in a tissue culture substrate
Jeffrey T Borenstein1, Malinda M Tupper, Peter J Mack
1MEMS Technology Group, Charles Stark Draper Laboratory, Cambridge, MA 02139, USA. jborenstein@draper.com
Biomedical Microdevices
|September 30, 2009
Summary
Researchers developed a novel method to create functional artificial vascular networks using polystyrene. This technique enables the culture of endothelial cells within 3D microfabricated channels, advancing tissue engineering and drug discovery.
Area of Science:
- Biomaterials Engineering
- Tissue Engineering
- Microfluidics
Background:
- Functional endothelialized networks are crucial for engineered tissues and drug discovery tools.
- Limitations in microfluidic materials and fabrication hinder artificial vasculature development.
Purpose of the Study:
- To develop a method for constructing microvascular networks with improved properties using common tissue culture substrates.
- To enable endothelial cell culture within these novel microvascular networks.
Main Methods:
- Fabrication of silicon master molds with semi-circular channels using electroplating.
- Embossing polystyrene sheets with master molds to create channel structures.
- Joining embossed sheets to form closed, bifurcated microvascular networks with circular cross-sections.
Main Results:
- Successfully constructed microvascular networks from polystyrene with circular cross-sections and smooth bifurcations.
- Polystyrene's properties supported endothelial cell culture along the channel lumen.
- Demonstrated high endothelial cell viability and near-confluent monolayers within the 3D networks.
Conclusions:
- The developed method overcomes limitations of conventional microfluidic fabrication for creating functional artificial vasculatures.
- Polystyrene-based microvascular networks are suitable for endothelial cell culture, paving the way for advanced tissue engineering applications.
