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Adult Schwann cells cultured within three-dimensional (3D) collagen-based nervous tissue constructs demonstrated downstream migration and potential use in the contact-guidance of regenerating adult dorsal root ganglia (DRG) axons. Type I collagen extracted from rat tail tendons was used to prepare collagen dispersions for wet spinning micron-size collagen fibers. Biodegradable poly-L-lactic acid (PLLA)...
Type I collagen was extruded into well-defined fibers using a novel controlled wet spinning device. The device significantly improved the yield of collagen fibers on the micron scale. Collagen scaffold materials fabricated from the device will provide contact-guided growth of neuronal cultures. Fibers composed of different weight percentages, 75, 2, and 3.4 wt% collagen dispersions, were used to validate...
Three-dimensional (3D) nervous tissue constructs were developed using a compliant gel matrix and a fiber component for promoting contact-guided axon outgrowth. Rat embryonic (E15) dorsal root ganglion expiants (DRGs) were cultured on biodegradable poly-L-lactic acid (PLLA) and wet-spun type I collagen fibers embedded in soft collagen gels. Gel constructs containing fibers induced greater axon outgrowth...
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