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Postproduction Processing of Electrospun Fibres for Tissue Engineering
Published on: August 9, 2012
Optimization strategies for electrospun silk fibroin tissue engineering scaffolds
Anne J Meinel1, Kristopher E Kubow, Enrico Klotzsch
1Institute of Pharmaceutical Sciences, ETH Zurich, Department for Chemistry and Applied Biosciences, HCI J 390.1, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland. lorenz.meinel@pharma.ethz.ch
Biomaterials
|February 24, 2009
Summary
Advanced silk fibroin scaffolds guide human mesenchymal stem cell orientation using topographical, mechanical, and chemical cues. This research optimizes biomaterial design for tissue engineering applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Cell Biology
Background:
- Silk fibroin (SF) is a versatile biomaterial for tissue engineering scaffolds.
- Current methods for scaffold evaluation often overlook fiber-level properties.
Purpose of the Study:
- To design and evaluate advanced silk fibroin scaffolds with topographical, mechanical, and chemical cues.
- To investigate the influence of fiber alignment on human mesenchymal stem cell (hMSC) behavior.
- To assess fibronectin conformation and its effect on cell adhesion and spreading.
Main Methods:
- Electrospinning of SF/polyethylene oxide blends with controlled fiber alignment.
- Mechanical testing of single fibers to determine extension at breakage.
- Fluorescence resonance energy transfer (FRET) imaging to analyze fibronectin conformation.
- Cellular assays using hMSCs to evaluate adhesion and spreading.
Main Results:
- Fiber alignment successfully guided hMSC morphology and orientation.
- Single-fiber mechanical analysis provided detailed material property insights.
- Fibronectin adsorbed onto scaffolds exhibited an intermediate extension, enhancing hMSC adhesion and spreading.
Conclusions:
- Silk fibroin is a versatile biomaterial for engineering modified fibrous scaffolds.
- Biofunctionally relevant assays are crucial for optimizing scaffold design.
- This study highlights the potential of multi-cue scaffold engineering for oriented tissue development.
