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Capillary Force Lithography for Cardiac Tissue Engineering
Published on: June 10, 2014
Novel capillary channel fiber scaffolds for guided tissue engineering
Qijin Lu1, Agneta Simionescu, Naren Vyavahare
1Department of Bioengineering, Clemson University, 501 Rhodes Engineering Research Center, Clemson, SC 29634, USA.
Acta Biomaterialia
|May 17, 2006
Summary
Novel capillary channel fibers (CCFs) guide cell growth and matrix deposition for tissue engineering. These poly(l-lactic acid) and polyethylene terephthalate scaffolds promote organized tissue development and nutrient transport.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Cell Biology
Background:
- Topographical cues are crucial for directing neo-tissue development.
- Existing scaffolds often lack sufficient structural guidance for complex tissue formation.
Purpose of the Study:
- To evaluate novel capillary channel fibers (CCFs) as tissue engineering matrices.
- To assess the topographical guidance of CCFs for cell alignment and extracellular matrix deposition.
Main Methods:
- Fabrication of CCFs from poly(l-lactic acid) (PLA) and polyethylene terephthalate (PET).
- Seeding of rat skin fibroblasts (RSFs) and rat aortic smooth muscle cells (RASMCs) onto CCF matrices.
- Culturing cells for up to 4 weeks and analyzing cell attachment, proliferation, alignment, and cytoskeleton organization.
- Assessing extracellular matrix protein deposition (laminin, collagen).
- Evaluating fluid transport capabilities of CCFs via capillary action.
Main Results:
- Cells (RSFs and RASMCs) successfully attached and proliferated within the grooves of CCFs.
- Cells exhibited high alignment parallel to the groove direction.
- Highly aligned actin and vimentin cytoskeletons were observed in RASMCs and RSFs, respectively.
- Deposition of extracellular matrix proteins (laminin, collagen) occurred parallel to the groove direction.
- CCFs demonstrated rapid fluid transport, indicating potential for nutrient and oxygen delivery.
Conclusions:
- CCFs provide effective topographical guidance for neo-tissue development.
- The aligned cellular and extracellular matrix structures within CCFs are suitable for engineering organized tissues.
- CCFs offer a promising platform for creating complex tissues like tendon, ligament, nerve, and cardiac muscle due to guided cell behavior and enhanced transport properties.
